阅读说明：本技术 一种空间电场作用lcp膜的生产设备及方法 (Production equipment and method for LCP film under action of space electric field ) 是由 曹贤武 黄其隆 于 2021-07-23 设计创作，主要内容包括：本发明提供一种空间电场作用LCP膜的生产设备,包括挤出机、超声发生装置、挤出机模头、空间电场发生装置以及压延成膜装置或流延成膜装置。超声发生装置用于产生超声波；空间电场发生装置用于产生膜幅宽方向上的空间电场,压延成膜装置或流延成膜装置用于对从挤出机模头流出并经空间电场作用的挤出物料压延或流延成膜。还提供相应的生产方法。本发明一方面通过使LCP受到超声波作用,超声波的冲击作用使分子链间互相作用减弱,分子运动能力增大,有利于解取向；另一方面,通过LCP受到膜幅宽方向的空间电场作用,解除LCP中的分子链取向,与后续LCP膜运动方向的拉伸作用造成的分子链取向相互抵消,在超声波和空间电场的协同作用下实现各向同性LCP膜的成型。(The invention provides production equipment for LCP films under the action of a space electric field, which comprises an extruder, an ultrasonic generating device, an extruder die head, a space electric field generating device and a calendaring film forming device or a tape casting film forming device. The ultrasonic generating device is used for generating ultrasonic waves; the space electric field generating device is used for generating a space electric field in the width direction of the film, and the calendering film-forming device or the tape-casting film-forming device is used for calendering or tape-casting film-forming the extruded material which flows out from the die head of the extruder and is acted by the space electric field. A corresponding production method is also provided. On one hand, the LCP is subjected to the action of ultrasonic waves, the interaction among molecular chains is weakened under the impact action of the ultrasonic waves, the molecular motion capability is increased, and the de-orientation is facilitated; on the other hand, the LCP is subjected to the action of a space electric field in the film width direction, the molecular chain orientation in the LCP is removed, the molecular chain orientation is mutually offset with the molecular chain orientation caused by the stretching action in the subsequent LCP film motion direction, and the molding of the isotropic LCP film is realized under the synergistic action of the ultrasonic wave and the space electric field.)

1. A production device of LCP film under space electric field action is characterized by comprising an extruder (1), an ultrasonic generating device (2), an extruder die head (3), a space electric field generating device (4) and a calendering film forming device (5) or a casting film forming device (6),

the extruder (1) is used for outputting LCP liquid crystal material in a molten state;

the ultrasonic generating device (2) is used for generating ultrasonic waves and is arranged at the tail end of the material barrel of the extruder (1);

the advancing direction of the material is defined as the front, the extruder die head (3) is positioned in front of the ultrasonic generating device (2), and the extruder die head (3) is communicated with the charging barrel of the extruder (1);

the space electric field generating device (4) is used for generating a space electric field in the width direction of a film and comprises a space electric field generator (41), a discharge positive plate (43) and a discharge negative plate (44) which are oppositely arranged, the discharge positive plate (43) and the discharge negative plate (44) are both connected with the space electric field generator (41), and the discharge positive plate (43) and the discharge negative plate (44) are arranged at the outlet of the die head (3) of the extruder and are positioned at two sides of a material extruded by the die head (3) of the extruder;

the calendering film-forming device (5) or the casting film-forming device (6) is positioned at the outlet of the extruder die head (3) to calender or cast the extruded material which flows out of the extruder die head (3) and is acted by a space electric field.

2. The manufacturing apparatus of a space electric field LCP film according to claim 1, wherein the LCP liquid crystal material is thermotropic poly-p-phenylene terephthamide, or a polymer composite material with thermotropic poly-p-phenylene terephthamide as a matrix and glass fiber or carbon fiber as a filler.

3. The manufacturing apparatus for a space-electric-field-effect LCP film as claimed in claim 1, wherein the extruder die (3) is a right-angled extruder die.

4. The manufacturing apparatus of a space-electric-field-applied LCP film as claimed in claim 1, further comprising a curling device (7), wherein the curling device (7) is disposed in front of the calendering-film-forming device (5) or the casting-film-forming device (6) to collect the formed LCP film after the calendering-film-forming or casting-film-forming process.

5. The manufacturing equipment of a space-electric-field-effect LCP film as claimed in claim 1, wherein the ultrasonic generating device (2) comprises an ultrasonic transducer probe (21), an ultrasonic frequency modulator (22) and an ultrasonic generator (23), the ultrasonic transducer probe (21) is fixed at the end of the barrel of the extruder (1) and extends into the barrel, the ultrasonic frequency modulator (22) is connected with the ultrasonic transducer probe (21), and the ultrasonic generator (23) is connected with the ultrasonic frequency modulator (22).

6. The manufacturing apparatus of a space-electric-field-effect LCP film as claimed in claim 1, wherein said space-electric-field-generating device further comprises an output controller (42), said output controller (42) is connected to said space-electric-field generator (41), said negative discharge plate (44) is connected to said space-electric-field generator (41), and said positive discharge plate (43) is connected to said space-electric-field generator (41) through said output controller (42).

7. The device for producing the LCP film with the space electric field effect according to the claims 1-6, wherein the calendering film forming device (5) comprises a first calendering roller (51), a second calendering roller (52) and a third calendering roller (53), the first calendering roller (51) and the second calendering roller (52) are arranged under the die head (3) of the extruder side by side, the contact surfaces of the first calendering roller (51) and the second calendering roller (52) and the discharge port of the die head (3) of the extruder are at the same vertical position, and the third calendering roller (53) is arranged on one side of the second calendering roller (52) side by side.

8. The LCP film production apparatus according to any one of claims 1-6, wherein said casting film forming device (6) comprises a casting roller (61), a casting peeling first roller (62) and a casting peeling second roller (63), said casting roller (61) is installed under the extruder die head (3), the center of said casting roller (61) and the discharge port of the extruder die head (3) are in the same vertical position, and said casting peeling first roller (62) and said casting peeling second roller (63) are arranged side by side in sequence on one side of said casting roller (61).

9. A method for producing an LCP film by calendering, which comprises the steps of:

s1, connecting the extruder (1), the ultrasonic generating device (2), the spatial electric field generating device (4) and the rolling film forming device (5) with an external power supply system, and starting the operation of the equipment;

s2, pouring the dried raw materials into a hopper of an extruder (1) to complete the melting and conveying of the raw materials;

s3, when the molten raw material passes through the region of the tail end of the charging barrel provided with the ultrasonic generating device (2), the molten raw material contacts with the ultrasonic transducing probe and flows out of the tail end of the charging barrel after being subjected to the ultrasonic action, flows into the die head (3) of the extruder, and enters the calendaring film forming device (5) after being subjected to the action of the space electric field generated by the space electric field generating device (4);

s4, forming the molten raw material flowing out of the die head (3) of the extruder through the calendering action of the first calendering roller (51) and the second calendering roller (52), outputting the obtained LCP film semi-finished product through the further action of the second calendering roller (52) and the third calendering roller (53) in a shaping mode, and finally collecting the LCP film semi-finished product in a curling device (7).

10. A casting film forming production method of LCP film, characterized in that the production apparatus of a space electric field applied LCP film according to any one of claims 1 to 8 is used, comprising the steps of:

s1, connecting the extruder (1), the ultrasonic generating device (2), the space electric field generating device (4) and the casting film forming device (6) with an external power supply system, and starting the operation of the equipment;

s2, pouring the dried raw materials into a hopper of an extruder (1) to complete the melting and conveying of the raw materials;

s3, enabling the molten raw materials to flow into an extruder die head (3) after passing through a region provided with an ultrasonic generating device (2), and enabling the molten raw materials to flow into a casting film forming device (6) after being acted by a space electric field generated by a space electric field generating device (4);

s4, casting the molten raw material flowing out of the extruder die head (3) on the surface of a casting roller (61), then stripping the first roller (62) and the second roller (63) by casting, and finally collecting the molten raw material in a curling device (7).

Technical Field

The invention relates to the technical field of polymer material processing, in particular to the technical field of LCP (liquid crystal display) film production, and specifically relates to a production device and a production method of an LCP film under the action of a space electric field.

Background

LCP (Liquid Crystal Polymer) is a wholly aromatic Liquid Crystal polyester Polymer material composed of rigid molecular chains, can be sintered and injected at high temperature, has higher mechanical strength and self-reinforcement, extremely high heat resistance, weather resistance, chemical resistance, excellent wear resistance, flame retardance and electrical insulation, can exist in most chemicals at high temperature and can resist stress cracking, wherein the polar and bowl-shaped LCP is ferroelectric and has extremely short response time under an external electric field.

With the advent of the 5G era, communication devices have been increased in frequency and transmission speed, and materials with lower dielectric constants and dielectric dissipation factors have been required. LCP characteristics of low dielectric constant and low dielectric loss factor can be applied to the high-frequency field of electrical transmission and 5G communication, but the rigid molecular chain structures of the wholly aromatic and copolyester are easy to accumulate in the melt rheological direction and the shear stress direction to form an ordered structure in the processing process, so that the anisotropy problems of stripe formation on the surface, easy tearing in the film width direction and the like are caused. In recent years, the technological threshold for producing continuous LCP films with regular surfaces is high, and heat treatment methods are monopolized abroad. The chinese published patent application "a LCP film production apparatus and method (publication No. CN 111546593 a)" provides an LCP film production apparatus, but the processing method of disordering LCP molecular orientation by the ring electric field of the apparatus is not highly targeted in de-orientation and has low efficiency, and the chinese published patent application "a liquid crystal polymer film and manufacturing method (publication No. CN 109664563 a)" provides a manufacturing method of a liquid crystal polymer film, and although the method of manufacturing an LCP film by cross-lamination hot pressing of the present invention has a good effect, the process flow is complicated, and developing a convenient, effective processing method and apparatus of an isotropic LCP film has important significance for realizing cost reduction and production efficiency improvement.

Disclosure of Invention

The invention aims to solve the problems and the defects of a processing method and equipment in the LCP film processing process, and provides a method and equipment for destroying the ordered structure of an LCP material in the production process, improving the production efficiency and realizing the isotropic LCP film processing by introducing ultrasonic waves and a space electric field into the processing process simultaneously.

The object of the invention is achieved by at least one of the following solutions.

The invention provides a production device of LCP film under space electric field action, which comprises an extruder, an ultrasonic generating device, an extruder die head, a space electric field generating device and a calendering film forming device or a casting film forming device,

the extruder is used for outputting the LCP liquid crystal material in a molten state;

the ultrasonic generating device is used for generating ultrasonic waves and is arranged at the tail end of the material barrel of the extruder;

defining the advancing direction of the material as the front, wherein the extruder die head is positioned in front of the ultrasonic generating device and is communicated with a charging barrel of the extruder;

the space electric field generating device is used for generating a space electric field in the width direction of a film and comprises a space electric field generator, a discharge positive plate and a discharge negative plate which are oppositely arranged, wherein the discharge positive plate and the discharge negative plate are both connected with the space electric field generator, and the discharge positive plate and the discharge negative plate are arranged at the outlet of the die head of the extruder and are positioned at two sides of a material extruded by the die head of the extruder;

the calendering film-forming device or the casting film-forming device is positioned at the outlet of the die head of the extruder so as to calender or cast the extruded material which flows out of the die head of the extruder and is acted by a space electric field.

LCP liquid crystal material is under the action of ultrasonic wave, molecular chains generate high-frequency vibration, the impact action of the ultrasonic wave weakens the interaction among the molecular chains, the activity and the movement capability of the internal structure of the molecule are increased, the viscosity is reduced, and the de-orientation is facilitated; then the LCP liquid crystal material is acted by the space electric field force in the width direction of the TD-direction film, the molecular chains move along the electric field direction, the orientation of the LCP molecular chains is removed, the molecular chain orientation caused by the stretching action in the MD direction of the subsequent LCP film counteracts each other to disorder the ordered molecular arrangement, and the processing of the isotropic LCP film is realized under the synergistic action of the ultrasonic wave and the electric field force of the space electric field.

Preferably, a curling device is further included, and the curling device is arranged in front of the rolling film-forming device or the casting film-forming device to collect the formed LCP film after the rolling film-forming or casting film-forming treatment.

Preferably, the ultrasonic generating device comprises an ultrasonic transducing probe, an ultrasonic frequency modulator and an ultrasonic generator, the ultrasonic transducing probe is fixed at the tail end of the charging barrel of the extruder and extends into the charging barrel, the ultrasonic frequency modulator is connected with the ultrasonic transducing probe, and the ultrasonic generator is connected with the ultrasonic frequency modulator.

The ultrasonic wave is generated by an ultrasonic generator in the ultrasonic generating device and acts on the melt through an ultrasonic transducing probe, the ultrasonic vibration frequency can be adjusted through an ultrasonic frequency modulator, the adjusting range is KHz, and the resonant frequency of the ultrasonic transducing probe is Hz.

Preferably, the space electric field generating device further comprises an output controller, the output controller is connected with the space electric field generator, the discharge negative plate is connected with the space electric field generator, and the discharge positive plate is connected with the space electric field generator through the output controller.

The space electric field is generated by a discharge positive plate and a discharge negative plate of the space electric field generating device, the intensity of the electric field is jointly adjusted by an output controller, and the adjusting range is-KV.

Preferably, the LCP liquid crystal material is thermotropic poly-p-phenylene terephthamide, or a polymer composite material with thermotropic poly-p-phenylene terephthamide as a matrix and glass fiber and carbon fiber as fillers.

Preferably, the calendering film-forming device comprises a first calendering roller, a second calendering roller and a third calendering roller, the first calendering roller and the second calendering roller are arranged under the die head of the extruder side by side, the contact surfaces of the first calendering roller and the second calendering roller and the discharge port of the die head of the extruder are at the same vertical position, and the third calendering roller is arranged on one side of the second calendering roller side by side.

Preferably, the casting film forming device comprises a casting roller, a casting stripping first roller and a casting stripping second roller, the casting roller is installed under the extruder die head, the circle center of the casting roller and the discharge port of the extruder die head are located at the same vertical position, and the casting stripping first roller and the casting stripping second roller are sequentially arranged on one side of the casting roller side by side.

Preferably, calendering to form a film comprises the steps of:

s1, connecting the extruder, the ultrasonic generating device, the spatial electric field generating device and the calendering film-forming device with an external power supply system, and starting to operate the equipment;

s2, pouring the dried raw materials into a hopper of an extruder to complete the melt conveying of the raw materials;

s3, when the molten raw material passes through the region of the tail end of the charging barrel provided with the ultrasonic generating device, the molten raw material contacts with the ultrasonic transducing probe, flows out of the tail end of the charging barrel after being subjected to the ultrasonic action, flows into a die head of the extruder, and enters the calendaring film-forming device after being subjected to the action of a space electric field generated by the space electric field generating device;

and S4, forming the molten raw material flowing out of the extruder die head through the calendering action of the first calendering roller and the second calendering roller, shaping and outputting the obtained LCP film semi-finished product through the further action of the second calendering roller and the third calendering roller, and finally collecting the product in a curling device.

Preferably, the cast film formation comprises the steps of:

s1, connecting the extruder, the ultrasonic generating device, the space electric field generating device and the casting film forming device with an external power supply system, and starting operation of the equipment;

s2, pouring the dried raw materials into a hopper of an extruder to complete the melt conveying of the raw materials;

s3, enabling the molten raw materials to flow into a die head of the extruder after passing through a region provided with an ultrasonic generating device, and enabling the molten raw materials to enter a calendaring film-forming device after being acted by a space electric field generated by a space electric field generating device;

s4, casting the molten raw material flowing out of the extruder die head on the surface of a casting roller for forming, stripping the first roller and the second roller by casting, and finally collecting in a curling device.

The synergistic action mechanism of the ultrasonic waves and the space electric field is as follows:

LCP liquid crystal material receives the effect of ultrasonic wave, and the molecular chain takes place high frequency vibration, and the impact effect of supersound makes the inter-molecular chain interact weaken, and the activity of molecule internal structure and motion ability increase reduce viscosity, provide the advantage for the molecular chain deflects in the space electric field. LCP liquid crystal material is ferroelectric, and the molecular chain has polarity and can deflect in the electric field, and LCP liquid crystal material through ultrasonic action receives the effect of space electric field power, and the molecular chain takes place the motion along the electric field direction, removes the molecular chain orientation, breaks up orderly molecular arrangement, can reach the effect similar biaxial stretching under the effect of extrusion subassembly simultaneously to reach the processing that realizes isotropic LCP membrane under the synergistic effect of the electric field power of ultrasonic wave and space electric field.

Compared with the existing LCP film processing method and equipment, the LCP film processing method and equipment have the following beneficial effects that:

(1) according to the invention, the ordered structure generated by LCP molecular chains can be disordered through the space electric field generated by the space electric field generating device, so that the problem of anisotropy of mechanical properties of the product caused by a fibrous oriented structure formed by LCP in the processing process is effectively relieved or even eliminated;

(2) the introduction of the ultrasonic action weakens the interaction between molecular chains, increases the activity and the movement capacity of the molecular internal structure, provides favorable conditions for the deflection of the molecular chains in a space electric field, amplifies the action of the space electric field and improves the deflection efficiency of the molecular chains in the space electric field;

(3) the directional electric field treatment LCP has strong pertinence, and the molecular chain orientation caused by the stretching action of the subsequent LCP film in the MD direction (movement direction) is mutually offset, so that the orientation removing effect is good;

(4) the method for processing the isotropic LCP film by the synergistic action of the ultrasonic waves and the space electric field has the advantages of simple principle, easy realization of processing conditions, reduction of processing difficulty and improvement of production efficiency;

(5) the equipment for processing the isotropic LCP film by the synergistic action of the ultrasonic wave and the space electric field has the advantages of simple structure, easy operation and strong adjustability, and can adjust the production process as required by adjusting the parameters of the ultrasonic generator and the space electric field generating device.

Drawings

FIG. 1 is a schematic overall view of an extrusion calendering film-forming apparatus using ultrasonic waves and a spatial electric field in cooperation according to the present invention;

FIG. 2 is a schematic view of the whole extrusion calendering film-forming apparatus under the action of a space electric field according to the present invention (the ultrasonic generator is omitted in the figure);

FIG. 3 is an overall schematic view of an extrusion casting film forming apparatus of the present invention in which ultrasonic waves and a spatial electric field are cooperated;

FIG. 4 is a schematic view of the whole of the extrusion casting film forming apparatus under the action of the space electric field according to the present invention (the ultrasonic generating apparatus is omitted in the figure);

FIG. 5 is a schematic view of an overall ultrasound generating apparatus;

FIG. 6 is a schematic diagram of the installation position of the space electric field generating device relative to the die head of the extruder.

In the figure: 1-an extruder; 2-an ultrasonic generating device; 21-an ultrasonic transducing probe; 22-ultrasonic frequency modulator; 23-an ultrasonic generator; 3-extruder die head; 4-space electric field generating means; 41-a spatial electric field generator; 42-an output controller; 43-a discharge positive plate; 44-discharge negative plate; 5-rolling film forming device; 51-calendering the first roller; 52-calendering the second roller; 53-calendering the third roll; 61-casting roll wheel; 62-tape casting peeling off the first roller; 63-tape casting and stripping the second roller; 7-crimping device.

Detailed Description

The present invention will be further described with reference to embodiments thereof, but the scope of the invention as claimed is not limited to the scope of the examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of the present invention.

Example 1:

referring to fig. 1 and 2, the present invention provides a device for producing a space electric field LCP film, which processes an isotropic LCP film by the cooperation of ultrasonic waves and a space electric field, and includes an extruder 1, an ultrasonic generator 2, an extruder die 3, a space electric field generator 4, a calendering film-forming device 5, and a curling device 7.

The extruder 1 is used for outputting LCP liquid crystal material in a molten state; the ultrasonic generating device 2 is used for generating ultrasonic waves and is arranged on a discharge barrel of the extruder 1; defining the advancing direction of the material as the front, wherein the die head 3 of the extruder is positioned in front of the ultrasonic generating device 2, and the die head 3 of the extruder is communicated with the discharge barrel of the extruder 1; the space electric field generating device 4 is used for generating a space electric field in the film width direction and comprises a space electric field generator 41, a discharge positive plate 43 and a discharge negative plate 44 which are oppositely arranged, the discharge positive plate 43 and the discharge negative plate 44 are both connected with the space electric field generator 41, and the discharge positive plate 43 and the discharge negative plate 44 are arranged at the outlet of the extruder die head 3 and are positioned at two sides of the material extruded by the extruder die head 3; (ii) a The rolling film-forming device 5 is positioned at the outlet of the extruder die head 3 to roll and form a film on the extruded material which flows out from the extruder die head 3 and is acted by a space electric field, and the curling device 7 is arranged at the front side of the rolling film-forming device 5 to collect the LCP film which is rolled and formed by the rolling film-forming device 5.

The ultrasonic generating device 2 comprises an ultrasonic transducer probe 21, an ultrasonic frequency modulator 22 and an ultrasonic generator 23, wherein the ultrasonic transducer probe 21 is installed at the tail end of a charging barrel of the extruder 1 in a drilling mode, the ultrasonic transducer probe 21 is connected with the ultrasonic frequency modulator 22, and the ultrasonic frequency modulator 22 is connected with the ultrasonic generator 23.

The ultrasonic waves are generated by an ultrasonic generator 23 and act on the melt through an ultrasonic energy conversion probe 21, the ultrasonic vibration frequency is adjusted by an ultrasonic frequency adjuster 22, and the adjusting range is 17-40 KHz. In the embodiment, the ultrasonic generator 23 is preferably JYD-700d-I, the working frequency is 20Hz, the ultrasonic transducer probe 21 is preferably Z-5020-Y-I, and the resonant frequency is 20 Hz.

The space electric field generating device comprises a space electric field generator 41, an output controller 42, a discharging positive plate 43 and a discharging negative plate 44, wherein the discharging positive plate 43 and the discharging negative plate 44 are fixedly arranged at the left side and the right side of a material extruded under the extruder die head 3, the output controller 42 is connected with the space electric field generator 41, the discharging negative plate 44 is connected with the space electric field generator 41, and the discharging positive plate 43 is connected with the space electric field generator 41 through the output controller 42. The spatial electric field generating device 4 generates a spatial electric field in the TD direction (film width direction).

In this embodiment, the spatial electric field generator 41 is preferably a BM201 plant spatial electric field generator.

The extruder die head 3 is a right-angle extruder die head, a slit inlet and a slit outlet are formed in the extruder die head, the molten raw material flows out of the charging barrel, flows into the extruder die head 3 through the slit inlet, flows out of the slit outlet under the action of a space electric field, and flows into the casting film forming device 6.

The calendering film-forming device 5 comprises a first calendering roller 51, a second calendering roller 52 and a third calendering roller 53, the first calendering roller 51 and the second calendering roller 52 are arranged under the extruder die head 3 side by side, the contact surfaces of the first calendering roller 51 and the second calendering roller 52 and the discharge port of the extruder die head 3 are in the same vertical position, so that the molten raw material flowing out of the extruder die head 3 can enter the contact surfaces of the first calendering roller 51 and the second calendering roller 52, and the third calendering roller 53 is arranged on one side of the second calendering roller 52 side by side.

The LCP liquid crystal material is thermotropic poly-p-phenylene terephthamide or a polymer composite material which takes the thermotropic poly-p-phenylene terephthamide as a matrix and glass fiber and carbon fiber as fillers.

According to the production equipment of the LCP film with the space electric field effect, the LCP liquid crystal material is extruded and then manufactured into the LCP film in a calendaring and forming mode, the LCP liquid crystal material is subjected to the effect of ultrasonic waves, molecular chains vibrate at high frequency, the impact effect of the ultrasonic waves weakens the interaction between the molecular chains, the activity and the movement capacity of the internal structures of the molecules are increased, the viscosity is reduced, and the orientation can be resolved conveniently; the LCP liquid crystal material under the action of ultrasonic waves is under the action of a space electric field force in the TD direction (the film width direction), molecular chains move along the electric field direction, the orientation of the LCP molecular chains is removed, the molecular chain orientation caused by the stretching action in the MD direction (the moving direction) of a subsequent LCP film is mutually counteracted, and ordered molecular arrangement is disordered, so that the processing of an isotropic LCP film is realized under the synergistic action of the ultrasonic waves and the electric field force of the space electric field.

Example 2

This example provides the production method of the production apparatus provided in example 1.

A calendering film-forming production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a space electric field comprises the following steps:

s1, connecting the extruder 1, the ultrasonic generating device 2, the spatial electric field generating device 4 and the rolling film forming device 5 with an external power supply system, and starting the operation of the equipment;

s2, pouring the dried raw materials into a hopper of the extruder 1 to complete the melting and conveying of the raw materials;

s3, enabling the molten raw materials to flow into the die head 3 of the extruder after passing through the region provided with the ultrasonic generating device 2, and enabling the molten raw materials to enter the calendaring film forming device 5 after being acted by a space electric field generated by the space electric field generating device 4;

s4, the molten raw material flowing out of the extruder die head 3 is shaped by the calendering action of the calendering first roller 51 and the calendering second roller 52, the obtained LCP film semi-finished product is shaped and output by the further action of the calendering second roller 52 and the calendering third roller 53, and finally collected in the curling device 7.

Example 3:

basically the same as in example 1, except that the present example is provided with not the calender film-forming device 5 but the casting film-forming device 6, which is a production apparatus for producing an LCP film by casting film-forming.

The casting film forming device 6 is positioned at the outlet of the extruder die head 3 to perform casting film forming on the extrusion material which flows out of the extruder die head 3 and is acted by a space electric field.

The casting film forming device 6 comprises a casting roller 61, a casting stripping first roller 62 and a casting stripping second roller 63, wherein the casting roller 61 is installed under the extruder die head 3, the circle center of the casting roller 61 and the discharge hole of the extruder die head 3 are located at the same vertical position, and the casting stripping first roller 62 and the casting stripping second roller 63 are sequentially arranged on one side of the casting roller 61 side by side.

Through the LCP film production equipment provided by the embodiment, the LCP liquid crystal material is extruded and then manufactured into the LCP film in a tape casting mode, the LCP liquid crystal material is subjected to the action of ultrasonic waves, molecular chains vibrate at high frequency, the impact action of the ultrasonic waves weakens the interaction among the molecular chains, the activity and the movement capacity of the internal structure of the molecules are increased, the viscosity is reduced, and the orientation can be resolved conveniently; the LCP liquid crystal material under the action of ultrasonic waves is under the action of a space electric field force in the TD direction (the film width direction), molecular chains move along the electric field direction, the orientation of the LCP molecular chains is removed, the molecular chain orientation caused by the stretching action in the MD direction (the moving direction) of a subsequent LCP film is mutually counteracted, and ordered molecular arrangement is disordered, so that the processing of an isotropic LCP film is realized under the synergistic action of the ultrasonic waves and the electric field force of the space electric field.

Example 4:

this embodiment provides a sound field method of the apparatus provided in embodiment 3.

A tape casting film forming production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a space electric field comprises the following steps:

s1, connecting the extruder 1, the ultrasonic generating device 2, the space electric field generating device 4 and the casting film forming device 5 with an external power supply system, and starting the operation of the equipment;

s2, pouring the dried raw materials into a hopper of the extruder 1 to complete the melting and conveying of the raw materials;

s3, enabling the molten raw materials to flow into the die head 3 of the extruder after passing through the region provided with the ultrasonic generating device 2, and enabling the molten raw materials to enter the calendaring film forming device 6 after being acted by the space electric field generated by the space electric field generating device 4;

s4, casting the molten raw material flowing out of the extruder die head 3 on the surface of the casting roller 61, then performing the action of the first casting peeling roller 62 and the second casting peeling roller 63, and finally collecting the molten raw material in the curling device 7.

Example 5:

a calendering production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a spatial electric field comprises the following steps:

thermoplastic polymer resin (VECTRA A950) is extruded at 310 ℃ by a calendering device for processing the isotropic LCP film by realizing the synergistic action of ultrasonic waves and a space electric field, and the obtained LCP film is subjected to performance test by an extrusion screw (the rotating speed is 80rpm, the working voltage of a plant space electrostatic field generator is 50 kV., the tensile strength in the MD direction is 270MPa, and the tensile strength in the TD square direction is 170 MPa.

Example 6:

a calendering production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a spatial electric field comprises the following steps:

thermoplastic polymer resin (VECTRA A950) is extruded at 310 ℃ by a calendering device which processes isotropic LCP film by realizing the synergistic action of ultrasonic waves and a space electric field, the rotating speed of an extrusion screw is 80rpm, and the working voltage of a plant space electrostatic field generator is 100 kV. The obtained LCP film was subjected to a performance test, and the tensile strength in the MD direction was 235MPa and the tensile strength in the TD square direction was 195 MPa.

Example 7:

a calendering production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a spatial electric field comprises the following steps:

thermoplastic polymer resin (VECTRA A950) is extruded at 310 ℃ by a calendering device which processes isotropic LCP film by realizing the synergistic action of ultrasonic waves and a space electric field, the rotating speed of an extrusion screw is 80rpm, and the working voltage of a plant space electrostatic field generator is 150 kV. The obtained LCP film was subjected to a performance test, and the tensile strength in the MD direction was 215MPa and the tensile strength in the TD square was 205 MPa.

Example 8:

a tape casting production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a spatial electric field comprises the following steps: thermoplastic polymer resin (VECTRA A950) is extruded at 310 ℃ by a casting device which processes isotropic LCP film by realizing the synergistic action of ultrasonic waves and a space electric field, the rotating speed of an extrusion screw is 80rpm, and the working voltage of a plant space electrostatic field generator is 50 kV. The obtained LCP film was subjected to a performance test, and the tensile strength in the MD direction was 295MPa, and the tensile strength in the TD square direction was 165 MPa.

Example 9:

a tape casting production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a spatial electric field comprises the following steps:

thermoplastic polymer resin (VECTRA A950) is extruded at 310 ℃ by a casting device which processes isotropic LCP film by realizing the synergistic action of ultrasonic waves and a space electric field, the rotating speed of an extrusion screw is 80rpm, and the working voltage of a plant space electrostatic field generator is 100 kV. The obtained LCP film was subjected to a performance test, and the tensile strength in the MD direction was 245MPa, and the tensile strength in the TD square direction was 190 MPa.

Example 10:

a tape casting production method for processing an isotropic LCP film by the synergistic action of ultrasonic waves and a spatial electric field comprises the following steps:

thermoplastic polymer resin (VECTRA A950) is extruded at 310 ℃ by a casting device which processes isotropic LCP film by realizing the synergistic action of ultrasonic waves and a space electric field, the rotating speed of an extrusion screw is 80rpm, and the working voltage of a plant space electrostatic field generator is 150 kV. The obtained LCP film was subjected to a performance test, and the tensile strength in the MD direction was 220MPa and the tensile strength in the TD square direction was 200 MPa.

Comparative example 1:

thermoplastic polymer resin (VECTRA a950) was extruded at 310 ℃ by a calendering apparatus that processed isotropic LCP film by the synergistic effect of ultrasound and space electric field, with an extrusion screw speed of 80 rpm. The obtained LCP film was subjected to a performance test, and the tensile strength in the MD direction was 340MPa and the tensile strength in the TD square direction was 85 MPa.

Comparative example 2:

thermoplastic polymer resin (VECTRA a950) was extruded at 310 ℃ with an extrusion screw speed of 80rpm using an apparatus that processes isotropic LCP film casting by the synergistic effect of ultrasound and space electric field. The obtained LCP film was subjected to a performance test, and the MD tensile strength was 345MPa and the TD square tensile strength was 80 MPa.

TABLE 1 processing mode, technological parameters and mechanical properties of samples of the examples

By combining the above embodiments, the ultrasonic wave generated by the ultrasonic generator can effectively improve the activity and the motion capability of the internal structure of the molecule and amplify the action of the space electric field; the space electric field generated by the space electric field generating device can achieve the purposes of contacting molecular chain orientation and disturbing the effective arrangement of molecules, thereby effectively relieving or even eliminating the problem of anisotropy of mechanical properties of products caused by a fibrous orientation structure formed by LCP in the processing process; the liquid crystal polymer LCP film has simple preparation method and high adjustability, is easy to improve the production efficiency and is suitable for large-scale continuous production.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or the related technical fields directly or indirectly, are included in the scope of the present invention.