阅读说明：本技术 一种无膜pe单向带及其制备方法 (Film-free PE unidirectional tape and preparation method thereof ) 是由 陶锴 徐永红 张轩宇 于 2021-09-26 设计创作，主要内容包括：本发明公开了一种无膜PE单向带及其制备方法,包括单向带主体,所述单向带主体包括基层和人造纤维层,所述基层和人造纤维层浸渍在聚乙烯树脂中形成PE单向带,所述人造纤维层由若干层纤维束组成,纤维束的中部具有弯折部并形成预留孔位,且对应纤维束的端部具有环形圈,环形圈用于对具有弯折部的限位束进行拉伸至平直；对纵向纤维和横向限位编织成人造纤维层,同时编织横向限位时将柱状件插设在横向限位的中部；采用在人造纤维层编织打捻的过程中插设柱状件至纤维的内侧,进而使得纤维的内侧预留出与柱状件形状吻合的预留孔位,便于在成形后的人造纤维层涂覆浸渍聚乙烯时,聚乙烯可进入人造纤维层的内侧,减少无胶空穴形成的概率。(The invention discloses a non-film PE (polyethylene) unidirectional tape and a preparation method thereof, and the non-film PE unidirectional tape comprises a unidirectional tape main body, wherein the unidirectional tape main body comprises a base layer and a man-made fiber layer, the base layer and the man-made fiber layer are impregnated in polyethylene resin to form a PE unidirectional tape, the man-made fiber layer consists of a plurality of layers of fiber bundles, the middle part of each fiber bundle is provided with a bending part and a reserved hole position, the end part corresponding to the fiber bundle is provided with an annular ring, and the annular ring is used for stretching a limiting bundle with the bending part to be straight; weaving the longitudinal fibers and the transverse limit into an artificial fiber layer, and inserting the columnar piece in the middle of the transverse limit during weaving the transverse limit; the adoption is woven at the artificial fiber layer and is beaten the in-process of twisting and insert and establish column to fibrous inboard, and then makes fibrous inboard reserve out with the identical reservation hole site of column shape, when the artificial fiber layer coating impregnation polyethylene after shaping of being convenient for, the polyethylene can get into the inboard on artificial fiber layer, reduces the probability that no glue hole formed.)

1. A filmless PE unidirectional tape is characterized in that: including unidirectional tape main part (1), unidirectional tape main part (1) includes basic unit (11) and artificial fiber layer (12), artificial fiber layer (12) complex is on basic unit (11), basic unit (11) and artificial fiber layer (12) flooding form the one-way area of PE in polyethylene resin, artificial fiber layer (12) comprise a plurality of layers of tow, and the middle part of tow has kink (1204) and forms and reserves hole site (1205), and the tip that corresponds the tow has annular ring (1203), and annular ring (1203) are used for stretching to the straight spacing bundle that has kink (1204).

2. The filmless PE unidirectional tape according to claim 1, wherein: the fiber bundle comprises a plurality of longitudinal fibers (1201) and transverse limiting members (1202), wherein adjacent longitudinal fibers (1201) are parallel to each other, and adjacent transverse limiting members (1202) are parallel to each other.

3. A filmless PE unidirectional tape according to claim 2, wherein: the longitudinal fibers (1201) and the transverse stops (1202) are perpendicular to each other.

4. A filmless PE unidirectional tape according to claim 2, wherein: the middle parts of the transverse limit parts (1202) are provided with bent parts (1204), and reserved hole positions (1205) are formed in the middle parts of the transverse limit parts (1202).

5. The filmless PE unidirectional tape according to claim 1, wherein: the shape of the reserved hole sites (1205) is hexagonal, so that the impregnation efficiency of the polyethylene resin in unit time is increased.

6. The filmless PE unidirectional tape according to claim 1, wherein: the column piece (4) is inserted in the middle of the transverse limiting part (1202) and used for forming a bending part (1204) and a reserved hole position (1205).

7. The filmless PE unidirectional tape according to claim 6, wherein: the cross section of the columnar piece (4) is hexagonal.

8. A preparation method of a filmless PE unidirectional tape is characterized by comprising the following steps:

A. weaving the longitudinal fibers (1201) and the transverse limit (1202) into an artificial fiber layer (12), inserting the columnar piece (4) in the middle of the transverse limit (1202) when weaving the transverse limit (1202), further forming a bending part (1204) and a reserved hole position (1205), and pulling out the columnar piece (4) after the reserved hole position (1205) is formed;

B. compounding the base layer (11) and the artificial fiber layer (12) and impregnating the base layer and the artificial fiber layer with polyethylene resin until the polyethylene resin enters the inner side of the artificial fiber layer (12);

C. then inserting the limiting stretching rod (2) to the inner side of the annular ring (1203), and stretching the annular ring (1203) to be straight by using the limiting stretching rod (2);

D. then cooling, hardening and forming are carried out;

E. and cutting the annular rings (1203) on the two sides by using a cutter (3) and then winding the belt material.

Technical Field

The invention belongs to the technical field of prepreg unidirectional tapes, and particularly relates to a film-free PE unidirectional tape and a preparation method thereof.

Background

It has been examined that application No. CN201810027477.7 discloses a method for preparing a continuous prepreg tape using a biomass fiber reinforced thermoplastic polymer. Firstly, hot-pressing mixed powder of untwisted discontinuous biomass fiber bundles, thermoplastic polymer and coupling agent to prepare a reinforced thermoplastic polymer film material; according to the thickness of the required prepreg tape, the reinforced thermoplastic polymer film materials are longitudinally connected, laminated and tiled to form a film with a multilayer structure, hot-press molding is carried out, and the operations are repeated to extend the multilayer film materials to the required length, so that the preparation of the continuous prepreg tape is completed. The biomass fibers and the thermoplastic polymer are introduced into the prepreg tape, so that the problems that the thermoplastic polymer is high in viscosity and difficult to immerse into a fiber rope and the biomass fibers are discontinuous are solved.

According to the scheme for preparing the continuous prepreg tape by using the biomass fibers, the biomass fibers are used for replacing the artificial fibers, and the space for realizing the differentiated development of the textile chemical fiber products by adopting a traditional method is limited, so that more changes with large change range are carried out in the preparation process of the scheme, the biomass fibers can be used for replacing the artificial fibers to prepare the prepreg tape, and the problems that the thermoplastic polymer is high in viscosity and difficult to immerse into a fiber rope are solved.

Disclosure of Invention

The invention aims to provide a film-free PE unidirectional tape and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a no membrane PE monodirectional zone, includes the monodirectional zone main part, the monodirectional zone main part includes basic unit and artificial fiber layer, the artificial fiber layer complex is on the basic unit, basic unit and artificial fiber layer flooding form the PE monodirectional zone in polyethylene resin, the artificial fiber layer comprises a plurality of layers of tow, and the middle part of tow has the kink and forms and reserve the hole site, and the tip that corresponds the tow has the annular ring, and the annular ring is used for drawing to straight to the spacing bundle that has the kink.

Furthermore, the fiber bundle comprises a plurality of longitudinal fibers and transverse limiting parts, wherein adjacent longitudinal fibers are parallel to each other, and adjacent transverse limiting parts are parallel to each other.

Further, the longitudinal fibers and the transverse limit are perpendicular to each other.

Furthermore, the middle parts of the transverse limit parts are provided with bending parts, and reserved hole positions are formed in the middle parts of the transverse limit parts.

Furthermore, the shape of the reserved hole sites is hexagonal, so that the impregnation efficiency of the polyethylene resin in unit time is increased.

Further, the column-shaped piece is inserted in the middle of the transverse limit and used for forming a bending part and a reserved hole position.

Further, the cross section of the columnar part is hexagonal.

Further, the preparation method of the filmless PE unidirectional tape comprises the following steps:

A. weaving the longitudinal fibers and the transverse limit into an artificial fiber layer, inserting the columnar piece into the middle part of the transverse limit during weaving the transverse limit so as to form a bending part and a reserved hole position, and pulling out the columnar piece after the reserved hole position is formed;

B. compounding the base layer and the artificial fiber layer and impregnating the base layer and the artificial fiber layer with polyethylene resin until the polyethylene resin enters the inner side of the artificial fiber layer;

C. then inserting the ring-shaped ring to the inner side of the ring-shaped ring through a limiting stretching rod, and stretching the ring-shaped ring to be straight by utilizing the limiting stretching rod;

D. then cooling, hardening and forming are carried out;

E. and cutting the annular rings on the two sides by adopting a cutter and then rolling the strip.

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

the adoption is woven at the artificial fiber layer and is beaten the in-process of twisting with fingers and insert and establish column spare to fibrous inboard, and then make fibrous inboard reserve out with the anastomotic reservation hole site of column spare shape, be convenient for when artificial fiber layer coating impregnation polyethylene after taking shape, polyethylene can get into the inboard on artificial fiber layer, reduce the probability that no glue cavity formed, simultaneously through spacing tensile pole with spacing to the both sides tensile make crooked spacing stretch out after the impregnation, then carry out operations such as pressfitting again and can form one-way prepreg tape, whole preparation process is simple, corresponding equipment only need carry out the upgrading of small amplitude can, under the condition of having guaranteed low cost, it is big to have solved the polyethylene resin viscosity, be difficult to soak the fibrous problem.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the structure of the column of the present invention;

FIG. 3 is a schematic diagram of the structure of the reserved hole sites of the present invention;

FIG. 4 is a flow chart of the present invention;

in the figure: 1. a unidirectional tape body; 11. a base layer; 12. a layer of rayon; 1201. longitudinal fibers; 1202. transversely limiting; 1203. an annular ring; 1204. a bending section; 1205. reserving hole sites; 2. limiting a stretching rod; 3. a cutter; 4. a column-shaped member.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: a non-film PE unidirectional tape comprises a unidirectional tape main body 1, the unidirectional tape main body 1 comprises a base layer 11 and a synthetic fiber layer 12, the synthetic fiber layer 12 is compounded on the base layer 11, the base layer 11 and the synthetic fiber layer 12 are impregnated in polyethylene resin to form the PE unidirectional tape, the synthetic fiber layer 12 is composed of a plurality of layers of fiber bundles, the middle part of each fiber bundle is provided with a bending part 1204 and a reserved hole position 1205, the shape of the reserved hole position 1205 is hexagonal, the impregnation efficiency of the polyethylene resin in unit time is increased, the end part of each fiber bundle is provided with an annular ring 1203, the annular ring 1203 is used for stretching a limiting bundle with the bending part 1204 to be straight, each fiber bundle comprises a plurality of longitudinal fibers 1201 and transverse limiting parts 1202, adjacent longitudinal fibers 1201 are parallel, adjacent transverse limiting parts 1202 are parallel, the longitudinal fibers 1201 and the transverse limiting parts are perpendicular to each other, the transverse limiting parts 1202 are all provided with the bending parts 1204, the reserved hole sites 1205 are formed in the middle of the plurality of transverse limiting 1202, and the column-shaped piece 4 is inserted in the middle of the transverse limiting 1202 and used for forming a bending part 1204 and the reserved hole sites 1205; the adoption is woven at artificial fiber layer 12 and is beaten the in-process of twisting and establish column 4 to fibrous inboard of inserting, and then make fibrous inboard reserve out with the anastomotic reservation hole site 1205 of column 4 shape, be convenient for when artificial fiber layer coating after taking shape soaks the polyethylene, the polyethylene can get into the inboard of artificial fiber layer, reduce the probability that no glue cavity formed, simultaneously through spacing tensile pole 2 with spacing to both sides tensile make crooked spacing stretch after the flooding, then carry out operations such as pressfitting can form one-way prepreg tape, whole preparation process is simple, corresponding equipment only need carry out the upgrading of small-amplitude can, under the circumstances of having guaranteed low cost, it is big to have solved the polyethylene resin viscosity, be difficult to soak fibrous problem.

In this embodiment, the cross section of the columnar member 4 is hexagonal.

In this embodiment, a method for preparing a filmless PE unidirectional tape includes the following steps:

A. weaving the longitudinal fibers 1201 and the transverse limit 1202 to form an artificial fiber layer 12, and simultaneously inserting the columnar member 4 in the middle of the transverse limit 1202 when weaving the transverse limit 1202 to form a bending part 1204 and a reserved hole position 1205, and pulling out the columnar member 4 after the reserved hole position 1205 is formed;

B. compounding the base layer 11 and the artificial fiber layer 12 and impregnating the base layer and the artificial fiber layer with polyethylene resin until the polyethylene resin enters the inner side of the artificial fiber layer 12;

C. then the annular ring 1203 is inserted into the inner side of the annular ring 1203 through the limiting stretching rod 2, and the annular ring 1203 is stretched to be straight by the limiting stretching rod 2;

D. then cooling, hardening and forming are carried out;

E. the annular rings 1203 on both sides are cut by a cutter 3 and then the strip is wound.

The working principle and the using process of the invention are as follows: weaving a synthetic fiber layer 12 by longitudinal fibers 1201 and a transverse limit 1202, inserting a column-shaped part 4 in the middle of the transverse limit 1202 when weaving the transverse limit 1202 to form a bending part 1204 and a reserved hole 1205, wherein the hexagonal flat reserved hole 1205 facilitates the stretching and resetting of the fibers in the later period, increases the sectional area, increases the dipping efficiency, facilitates the polyethylene to enter the inner side of the synthetic fiber layer when the formed synthetic fiber layer is coated with dipped polyethylene, reduces the probability of forming glue-free holes, stretches the limit to two sides by a limit stretching rod 2 after dipping to stretch the bent limit, extracts the column-shaped part 4 after forming the reserved hole 1205, then compounds a base layer 11 and the synthetic fiber layer 12 and adopts polyethylene resin to dip the base layer until the polyethylene resin enters the inner side of the synthetic fiber layer 12, and inserts the limit stretching rod 2 to the inner side 1203 of an annular ring, stretching the annular ring 1203 to be straight by using a limiting stretching rod 2, then cooling, hardening and forming, cutting the annular ring 1203 on two sides by using a cutter 3, and then winding a belt material; the whole preparation process is simple, corresponding equipment only needs to be upgraded to a small extent, and the problems that the polyethylene resin is high in viscosity and difficult to immerse into fibers are solved under the condition of ensuring low cost.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.