阅读说明：本技术 生产纺织品单向织物的方法 (Method for producing textile unidirectional fabric ) 是由 R·沃卡茨 D·奥特曼斯 吉田周平 中村阳辅 吉川秀和 于 2018-03-29 设计创作，主要内容包括：本发明涉及一种制造纺织品单向织物的方法，其中相互平行布置的复丝增强线的至少一个平面层与横向线编织，其中使用具有芯鞘结构和10至40tex的纤度的横向线作为横向线，其中横向线具有构成鞘的第一组分和构成芯的第二组分，其中第一组分的熔融温度低于第二组分的熔融温度，第一组分是可熔融的热塑性聚合物材料，借助横向线的第一组分，相邻布置的复丝增强线通过热熔融彼此连接，其中通过将复丝增强线与横向线交织在一起在单向织物中形成通道，因此可以建立10至600l/dm2/min的渗透率。优选的实施方案涉及制造具有纤维网的单向织物的方法。本发明还涉及由该单向织物制造的纤维预成型件。(The invention relates to a method for producing a textile unidirectional fabric, wherein at least one planar layer of multifilament reinforcing threads arranged parallel to one another is woven with transverse threads, wherein transverse threads having a core-sheath structure and a titer of 10 to 40tex are used as transverse threads, wherein the transverse threads have a first component constituting the sheath and a second component constituting the core, wherein the melting temperature of the first component is lower than the melting temperature of the second component, the first component being a meltable thermoplastic polymer material, with the aid of which first component of the transverse threads adjacently arranged multifilament reinforcing threads are connected to one another by thermal fusion, wherein channels are formed in the unidirectional fabric by interweaving the multifilament reinforcing threads with the transverse threads, so that a permeability of 10 to 600l/dm2/min can be established. Preferred embodiments relate to methods of making unidirectional fabrics with a web of fibers. The invention also relates to a fibrous preform made from the unidirectional fabric.)

1. Process for manufacturing a textile unidirectional fabric (1) in which at least one planar layer of multifilament reinforcing threads (2) juxtaposed parallel to each other is interwoven with transverse threads (3), wherein a transverse wire having a core-sheath structure is used as the transverse wire (3), wherein the transverse wire (3) comprises a first component constituting the sheath and a second component constituting the core, wherein the melting temperature of the first component is lower than the melting temperature of the second component, and wherein the first component is a meltable thermoplastic polymer material, and wherein a first component of transverse wires (3) and the juxtaposed multifilament reinforcing wires are bonded together by melting, the transverse wires having a linear density of 10 to 40tex measured according to EN ISO 2060:1995, and interweaving the transverse threads (3) with the multifilament reinforcing threads (2) in a planar position made up of the multifilament reinforcing threads (2) juxtaposed, wherein the channel (4) can be adjusted to 10 to 600l/dm measured according to EN ISO 9237.²Permeability/min.

2. A method according to claim 1, characterized in that a nonwoven of thermoplastic polymer material is arranged on at least one planar layer of the multifilament reinforcing threads (2) and is bonded to the planar position of the multifilament reinforcing threads (2).

3. Method according to at least one of the preceding claims, characterized in that more than 25l/dm is provided²Min, more preferably 50l/dm²A permeability above/min, and/or forming channels (4) substantially only in the region of the junctions where the multifilament reinforcing threads (2) and the transverse threads (3) are interwoven.

4. Method according to at least one of the preceding claims, characterized in that the transverse threads (3) are woven with the multifilament reinforcing threads to form the textile unidirectional fabric, preferably in a twill or plain weave.

5. The method of claim 4, wherein a twill weave 3/1 having 0.8 to 3.0Fd/cm, a twill weave 3/1 having 0.8 to 3.0Fd/cm, a twill weave 2/1 having 0.8 to 3.0Fd/cm, a plain weave 1/1 having 0.8 to 3.0Fd/cm and/or a plain weave 1/1 having 0.8 to 3.0Fd/cm are used for bonding.

6. The method according to any of the preceding claims, characterized in that a component having a melting temperature in the range of 70 to 150 ℃ is used as the first component of the transverse wires (3).

7. Method according to claim 6, characterized in that the first component of the transverse wires (3) is a polyamide homopolymer or a polyamide copolymer, or a mixture of polyamide homopolymers and/or polyamide copolymers.

8. Method according to any of the preceding claims, characterized in that a component having a melting temperature higher than 200 ℃ is used as the second component of the transverse wires (3).

9. Method according to any of the preceding claims, characterized in that glass or polyester is used as the second component of the transverse threads (3).

10. Method according to any one of the preceding claims, characterized in that the titer of the transverse threads (3) used is in the range of 15 to 35tex, more preferably 20 to 25tex, measured according to EN ISO 2060: 1995.

11. Method according to claim 2, characterized in that use is made of a composition having a viscosity of 3 to 25g/m²The basis weight of the nonwoven as described above.

12. Method according to claim 2, characterized in that a nonwoven having a thickness measured perpendicular to the direction of propagation of the nonwoven of less than 60 μm, preferably less than 30 μm, more preferably less than 10 μm, measured according to DINISO 9073-2 is used as nonwoven.

13. The method according to claim 2, characterized in that a nonwoven having a first polymer component and a second polymer component is used as the nonwoven, wherein the first polymer component has a melting temperature which is lower than the melting or decomposition temperature of the second component of the transverse wires (3) and is insoluble in the matrix resin of epoxy, cyanate or benzoxazine or in a mixture of these matrix resins, wherein the melting temperature of the second polymer component is lower than the melting temperature of the first polymer component.

14. Method according to any of the preceding claims, characterized in that carbon, glass or aramid fibres or Ultra High Molecular Weight (UHMW) threads are used as multifilament reinforcement threads (2).

15. A method according to any of the preceding claims, characterized in that the multifilament reinforcing yarns used are carbon fibre yarns having a strength of at least 5000MPa measured according to JIS R-7608 and a tensile modulus of at least 260GPa measured according to JIS R-7608.

16. Method according to any of the preceding claims, characterized in that the at least one planar layer of multifilament reinforcing wires (2) juxtaposed parallel to each other has a curved profile, wherein the multifilament reinforcing wires (2) are arranged parallel to the circumferential direction of the curved profile, and each multifilament reinforcing wire (2) follows the circumferential direction of the curved profile, while the tracks of the respective multifilament reinforcing wires (2) have a common center of curvature.

17. Fibrous preform for the production of a composite component, characterized in that it comprises a textile unidirectional fabric (1) prepared according to any of claims 1 to 16.

Example 1: identical weft (transverse thread), variation of the bonding

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