阅读说明：本技术 一种用于完全粘结型增强复合管复合的装置及方法 (Device and method for compounding complete bonding type reinforced composite pipe ) 是由 霍福磊 陈江慧 金崇阳 褚展鹏 刘跃明 于 2021-06-25 设计创作，主要内容包括：本发明公开了一种用于完全粘结型增强复合管复合的装置及方法,属于复合管复合技术领域,该装置包括等离子产生装置和空气加热装置,所述空气加热装置设于等离子产生装置的两侧边,该装置安装完成后,两侧空气加热装置的热空气喷射嘴分别朝向需要复合的管材和将复合到管材上的增强带上,等离子产生装置的等离子喷射嘴朝向需要复合的管材和增强带之间,以实现加热后进行等离子处理。本发明通过等离子处理,降低了复合温度,提高了完全粘结型增强管的复合性能和复合效率,节省了加工操作时间。(The invention discloses a device and a method for compounding a completely bonded reinforced composite pipe, and belongs to the technical field of compounding of composite pipes. The invention reduces the compounding temperature, improves the compounding performance and the compounding efficiency of the completely bonded reinforced pipe and saves the processing operation time through plasma treatment.)

1. The device for compounding the completely bonded reinforced composite pipe is characterized by comprising a plasma generating device (1) and air heating devices (3), wherein the air heating devices (3) are arranged on two side edges of the plasma generating device (1), after the device is installed, hot air injection nozzles (4) of the air heating devices (3) on two sides face a pipe (7) to be compounded and a reinforcing belt (8) to be compounded on the pipe (7) respectively, and a plasma injection nozzle (2) of the plasma generating device (1) faces a position between the pipe (7) to be compounded and the reinforcing belt (8) so as to realize plasma treatment after a compound surface is heated.

2. An apparatus for the compounding of reinforced composite pipes of the perfect adhesion type according to claim 1, characterized in that said plasma generating means (1) is a jet type atmospheric cryogenic plasma processor and said pipes (7) are reinforced thermoplastic pipes.

3. The apparatus for full adhesion type reinforced composite pipe composite as claimed in claim 1, wherein the air heating means (3) is provided at both sides of the plasma generating means (1) through angle adjusting means (5), respectively.

4. The apparatus for the full adhesion type reinforced composite pipe composite as claimed in claim 3, wherein the angle adjusting means (5) has one end fixedly connected to the plasma generating means (1) and the other end being a telescopic means fixedly connected to the air heating means (3), and one end of the air heating means (3) is hinged to the plasma generating means (1).

5. An apparatus for the complete bonded reinforced composite pipe composite as claimed in any of claims 1 to 4, characterized in that the outer side of the plasma generating apparatus (1) is a heat insulating layer (6).

6. The apparatus for fully bonded reinforced composite pipe composite as claimed in claim 1, wherein the nozzle width of the hot air injection nozzle (4) is 4mm to 8mm larger than the width of the reinforcing tape (8), and the nozzle width of the plasma injection nozzle (2) is 4mm to 8mm larger than the width of the reinforcing tape (8).

7. A method for fully bonded reinforced composite pipe composite as claimed in claim 1, comprising the steps of:

1) preparing a pipe (7) by adopting a single-pipe extrusion method, a multi-pipe co-extrusion method or a multi-layer compounding method;

2) installing a compounding device on a winding machine, arranging the compounding device at a position to be compounded of the wound reinforcing belt (8) and the pipe (7) to be compounded, starting an air heating device (3), and respectively enabling a hot air injection nozzle (4) of the air heating device (3) to face the outer surface of the pipe (7) prepared in the step 1) and a compounding surface of the reinforcing belt (8) to be wound on the outer surface of the pipe (7) to be heated by hot air to a compounding temperature;

3) starting the plasma generating device (1), and treating the surfaces to be compounded of the pipe (7) and the reinforcing belt (8) by the plasma generating device (1);

4) during treatment, the pipe (7) is pulled by a tractor to move forwards in a straight line, a winding machine provided with a reinforcing belt (8) winds and compounds according to a designed angle, and the device rotates along with the winding machine;

5) after finishing the winding compounding of the first reinforcing layer, compounding the reinforcing layer and the reinforcing layer according to the same operation method from the step 2) to the step 4);

6) after all the enhancement layers are wound, carrying out composite treatment on the composite surface of the enhancement layer at the outermost layer and the inner surface of the outer layer to be coated according to the same operation method from the step 2) to the step 4);

7) and (4) coiling, cutting, packaging and detecting the compounded pipe (7) and then warehousing.

8. The method for the full adhesion type reinforced composite pipe compounding as claimed in claim 7, wherein the plasma generating device (1) generates the particle energy larger than the binding bond energy of the polymer of the face to be compounded.

9. The method for compounding the fully bonded reinforced composite pipe according to claim 7, wherein the tension of the reinforcing tape (8) is 5N to 100N.

10. The method for the full adhesion type reinforced composite pipe compounding as claimed in claim 7, wherein the distance between the plasma generating device (1) and the surface to be compounded is in the range of 5mm to 50 mm.

Technical Field

The invention belongs to the technical field of composite pipe compounding, and particularly relates to a device and a method for compounding a completely-bonded reinforced composite pipe.

Background

The fiber reinforced thermoplastic composite pipe is classified into a non-bonded type and a completely bonded type from a bonded type. The completely bonded reinforced composite pipe has better overall performance and excellent fatigue resistance, so the completely bonded reinforced composite pipe is widely accepted in the market. The completely bonded reinforced composite pipe seen in the market at present has poor bonding effect, and the bonding layer gradually loses efficacy along with the fluctuation of loads such as temperature, pressure and the like in the using process, and the reasons are as follows: the existing complete bonding compounding process is compounded from three dimensions of compounding temperature, compounding pressure and compounding time. The existing defects are as follows: 1) the surface of the core pipe to be compounded is provided with an oxide layer which cannot be processed, and the compounding effect is poor; 2) when the surface temperature of the composite reinforced layer rises to the composite temperature, the surface oxide layer can not be processed, and the composite effect is poor; 3) when the composite surface is heated by hot air, the composite surface is polluted by impurities, moisture, grease and the like in the air, and the composite effect is poor; the infrared heating is adopted, and due to the rising of heat, the temperature difference of the composite surfaces at different positions is large, and the composite effect difference is large; 4) the common thermoplastic plastics are mostly non-polar materials and are difficult to compound; 5) the composite pressure is not accurately controlled and is easy to fluctuate, and the composite effect is not stable; 6) the requirement of compounding time limits the production speed, resulting in low production efficiency and high production cost.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide an apparatus and method for compounding a completely bonded reinforced composite pipe.

In order to achieve the purpose, the following technical scheme is provided:

the device comprises a plasma generating device and an air heating device, wherein the air heating device is arranged on two side edges of the plasma generating device, after the device is installed, hot air injection nozzles of the air heating devices on two sides face a pipe to be compounded and a reinforcing belt to be compounded on the pipe respectively, and a plasma injection nozzle of the plasma generating device faces between the pipe to be compounded and the reinforcing belt so as to realize plasma treatment after heating a compound surface.

Further, the plasma generating device is a jet-flow type atmosphere low-temperature plasma processor, and the pipe is a reinforced thermoplastic pipe.

Furthermore, the air heating devices are respectively arranged on two sides of the plasma generating device through the angle adjusting devices.

Furthermore, one end of the angle adjusting device is fixedly connected with the plasma generating device, the other end of the angle adjusting device is a telescopic device and is fixedly connected with the air heating device, and one end of the air heating device is hinged with the plasma generating device.

Furthermore, the outer side of the plasma generating device is a heat insulation layer.

Furthermore, the width of the nozzle of the hot air injection nozzle is 4 mm-8 mm larger than that of the reinforcing strip, and the width of the nozzle of the plasma injection nozzle is 4 mm-8 mm larger than that of the reinforcing strip, so that the hot air and the plasma are comprehensively injected to the surface to be compounded.

A method for fully bonded reinforced composite pipe compounding comprising the steps of:

1) preparing the pipe by adopting a single-pipe extrusion method, a multi-pipe co-extrusion method or a multi-layer compounding method;

2) installing a composite device on a winding machine, arranging the composite device at a position to be composited for winding the reinforcing belt and the pipe to be composited, starting an air heating device, and respectively enabling a hot air injection nozzle of the air heating device to face the outer surface of the pipe prepared in the step 1) and a composite surface of the reinforcing belt to be wound on the outer surface of the pipe to be composited, heating the hot air to a composite temperature;

3) starting a plasma generating device, and processing the to-be-compounded surfaces of the pipe and the reinforcing belt by the plasma generating device;

4) while processing, the pipe is drawn by the tractor to move forwards linearly, the winding machine provided with the reinforcing belt winds and compounds according to the designed angle, the device rotates along with the winding machine,

5) after finishing the winding compounding of the first reinforcing layer, compounding the reinforcing layer and the reinforcing layer according to the same operation method from the step 2) to the step 4);

6) after all the enhancement layers are wound, carrying out composite treatment on the composite surface of the enhancement layer at the outermost layer and the inner surface of the outer layer to be coated according to the same operation method from the step 2) to the step 4);

7) and coiling, cutting, packaging and detecting the compounded pipe, and then warehousing.

Further, the plasma generating device generates the particle energy which is larger than the binding bond energy of the polymer of the surface to be compounded.

Furthermore, the tension of the reinforcing belt is 5N-100N.

Further, the distance between the plasma generating device and the surface to be compounded ranges from 5mm to 50 mm.

The energy and speed of the plasma can be adjusted by adjusting the setting of the plasma generating device so as to adapt to the matrix material and the compounding speed of the surface to be compounded, and the setting is based on the principle that the particles sprayed on the compounding surface can completely open the binding bonds of the matrix of the surface to be compounded.

Application principle of the plasma generating device:

the energy of particles in the low-temperature plasma is generally about several to tens of electron volts, is larger than the bonding bond energy of a polymer material (several to tens of electron volts), can completely break chemical bonds of organic macromolecules to form new bonds, but is far lower than high-energy radioactive rays, only relates to the surface of the material, and does not influence the performance of a matrix. In the low-temperature plasma in a non-thermodynamic equilibrium state, electrons have higher energy, can break chemical bonds of molecules on the surface of the material, and improve the chemical reactivity of particles (larger than that of thermal plasma), and the temperature of neutral particles is close to room temperature, so that the advantages of providing suitable conditions for surface modification of the thermosensitive high-molecular polymer. Through low-temperature plasma surface treatment, the surface of the material is subjected to various physical and chemical changes, or is etched to be rough, or a compact cross-linked layer is formed, or oxygen-containing polar groups are introduced, so that the hydrophilicity, the cohesiveness, the dyeability, the biocompatibility and the electrical property are respectively improved.

The jet type atmosphere low-temperature plasma processor consists of a low-temperature plasma generator, a gas conveying system, a low-temperature plasma spray gun and the like. The high-frequency high-voltage energy generated by the low-temperature plasma generator generates low-temperature plasma in the spray gun, the plasma is conveyed out of the cavity by virtue of air flow to reach the surface of a workpiece, when the plasma meets the surface of the object to be treated, the chemical action and the physical change are generated, the surface is modified and cleaned, and the hydrocarbon pollutants such as grease, auxiliary additives and the like are removed.

In the compounding process, the process of treating the compound joint surface by adopting the jet low-temperature plasma processor can greatly improve the bonding strength, reduce the cost, has stable bonding quality, good product consistency, no dust generation and clean environment, and is the best solution for enhancing the compound pipe and improving the product quality. The low-temperature plasma torch ejected by the jet-type atmosphere low-temperature plasma surface treatment machine is neutral particles and is uncharged, so that the use is safe.

Compared with the prior art, the invention has the beneficial effects that:

1) due to the fact that the composite surface is treated by plasma, requirements of other composite processes are reduced, and the requirement for controlling the tension of the reinforcing belt is reduced by 20% at most;

2) because the compound surface is treated by plasma, the bond of the matrix of the surface to be compounded is opened, the complete bonding time of the compound surface is shortened, the compound time of the pipe is reduced by more than 40 percent, and the production speed of the pipe can be improved by more than 35 percent;

3) the bonding strength of the composite interface is improved by 40 percent and can reach more than 95 percent of the strength of the body, and the service life of the pipe during trial is improved by more than 60 percent;

4) the temperature required by the composite pipe is reduced by about 30 ℃, and the damage to the pipe and the strip is reduced.

Drawings

FIG. 1 is a structural cross-sectional view of the apparatus of the present invention;

FIG. 2 is a perspective view of the device of the present invention

Fig. 3 is a diagram of a mode of use of the present invention.

In the figure: 1. a plasma generating device; 2. a plasma spray nozzle; 3. an air heating device; 4. a hot air injection nozzle; 5. an angle adjusting device; 6. a thermal insulation layer; 7. a pipe; 8. a reinforcing tape.

Detailed Description

The invention will be further described with reference to the drawings attached to the description, but the scope of the invention is not limited thereto.

As shown in fig. 1 and 2, a device for completely bonding reinforced composite pipe composite comprises a plasma generating device 1, an air heating device 3 and an angle adjusting device 5, wherein one end of the angle adjusting device 5 is fixedly connected to the outer surface of the plasma generating device 1 through a screw, the other end of the angle adjusting device is of a telescopic structure and is fixedly connected to the side surface of the air heating device 3 through a screw, one end of the air heating device 3 is hinged to the outer surface of the plasma generating device 1, two side edges of one plasma generating device 1 are respectively hinged to one air heating device 3, and a heat insulation layer 6 is arranged on the outer surface of the plasma generating device 1.

As shown in figure 3, when in use, the device is arranged between a pipe 7 and a reinforcing belt 8, hot air injection nozzles 4 of air heating devices 3 on two sides face the pipe 7 to be compounded and the reinforcing belt 8 to be compounded on the pipe 7 respectively, a plasma injection nozzle 2 of a plasma generating device 1 faces between the pipe 7 to be compounded and the reinforcing belt 8 to realize plasma treatment after heating a compounding surface, the air heating device 3 heats the surface to be compounded, the reinforcing belt 8 rotates and winds at a certain tension according to a set angle along with forward traction movement of the pipe 7, then the plasma generating device 1 performs plasma treatment on the outer surface of the heated pipe 7 and the inner surface of the reinforcing belt 8, and after the treatment is finished, winding and compounding are performed along with rotation of the reinforcing belt 8.

A method for fully bonded reinforced composite pipe compounding comprising the steps of:

1) preparing a pipe 7 by adopting a single-pipe extrusion method, a multi-pipe co-extrusion method or a multi-layer compounding method;

2) starting the air heating device 3, and respectively heating the outer surface of the pipe 7 prepared in the step 1) and the composite surface of the reinforcing belt 8 to be wound on the outer surface of the pipe 7 by hot air injection nozzles 4 of the air heating device 3 to the composite temperature;

3) starting the plasma generating device 1, and processing the surfaces to be compounded of the pipe 7 and the reinforcing belt 8 by the plasma generating device 1;

4) during treatment, the pipe 7 is pulled forwards and moved, and the reinforcing belt 8 is wound in a rotating mode at a certain tension according to a set angle for compounding;

5) after finishing the winding compounding of a reinforcing layer, compounding the reinforcing layer and the reinforcing layer according to the same operation method from the step 2) to the step 4);

6) after all the enhancement layers are wound, carrying out composite treatment on the composite surface of the enhancement layer at the outermost layer and the inner surface of the outer layer to be coated according to the same operation method from the step 2) to the step 4);

7) and coiling, cutting, packaging and detecting the compounded pipe 7, and then warehousing.

The pipe 7 is compounded by using polyethylene (PE 100) as matrix resin and glass fiber reinforced polyethylene (PE 100) strip as a reinforcing material, and the bonding effect is shown in Table 1.

TABLE 1 comparison of composite effects of composite pipes

Index (I)	By plasma treatment	Without plasma treatment
			Composite temperature (. degree. C.)	95	125
Composite time(s)	3	5.5
			Composite tension (N)	20±6	20±4.5
Peel strength (N/mm)	40~47	8~13
			Adhesive Strength (MPa)	19.5	10.5

As can be seen from table 1, the set temperature of the air heating device 3 can be reduced by more than 20 ℃ compared with the temperature without the plasma treatment process, so that the phenomena that the tube 7 is softened and collapsed due to too high temperature, the reinforcing belt 8 is deformed and the like to cause no recombination are avoided, the heating time is reduced while the temperature is reduced, the formation of an oxide layer on a composite surface is effectively reduced, and the bonding property of a composite interface is improved; and the peel strength required for the occurrence of peeling of the bonded pipe compounded by the plasma treatment was 4 times as high as that without the plasma treatment.