SU996553A1 - Reinforcement woven filler for structural plastics - Google Patents

Description

one

The invention relates to the production of construction materials from plastics with fillers, in particular to reinforcing woven fillers of construction plastics.

The reinforcing fabric filler of construction plastics is known, which consists of polyamide base and, according to duck, boron filaments 1.

A disadvantage of the known filler is low fabric strength. This is due to the fact that in the process of quality, when the boron filaments are laid into the fabric, the solidity of the thread is broken and damaged ones appear on the surface of the fabric; Boron filaments, which, in turn, impair the technological properties of the fabric and cause the risk of injury to a person when working with this fabric.

The purpose of the invention is to increase the strength of woven filler.

The goal is achieved by the fact that the reinforcing woven napkin for structural plastics, consisting of polyamide on the base, and weft on the weft. .the ratio of components, weight. %:

Polyamide yarn, 80-82

Boron filaments18-20

FIG. Tables 1-3 show variants of interlacing, the interlacing of fabrics for which is a constant: eight remise and zazravka of the warp in the eyes of hell, a passage into the tooth of the bird by eight threads, the number of Byrd 36.

The fabrication of the reinforcing filler of the woven structure is carried out on a loom using a rifling method of inserting the weft into the throat.

The compactness of the arrangement of boron filaments in the trunk of the combined thread, created by the winding of the auxiliary thread, eliminates the floating distribution of boron filaments in the structure of the thread and, therefore, in the fabric itself.

Example. Reinforcing woven filler (Fig. 1) has the following indicators: before flying a two-layer; density on the basis of 29 threads / cm; on the weft 11 threads / cm. Combined yit with a step of winding 13 mm has the following composition, weight. %: polymer fiber CBM 82; boron fiber 18. The weight ratio of polymer to boron fiber is 4.5: 1.

The weft yarns are intertwined with the warp threads through 3 overlaps, but the two-layer weave increases the interaction of both yarn systems, partially breaking weft filaments (Table 1).

Example 2. Reinforcing woven filler (Fig. 2) has the following characteristics: weave oct-creme crepe; density on the basis of 30 threads / cm; on a duck 8 threads / cm. The combined thread with a 3 mm winding pitch has the following composition, weight. ° / o: polymer fiber CBM 81 and boron fiber 19.

The weight ratio of the polymer and boron fiber is 4.25-1.

The weft yarns are interwoven with the warp threads through 3 overlaps on the front side (Table 1).

Example 3. Reinforcing woven filler (Fig. 3) has the following indicators: the structure of satin weave 8/5; density on the basis of 28 threads / cm; by duck 10 threads / cm. The combined thread with a winding pitch of 8 mm has the following composition, weight. %: polymer fiber CBM 80; boron fiber 20. The weight ratio of polymer and boron fiber is 4: 1.

The weft threads are intertwined with the warp threads through seven overlaps. By

relatively long weft overlaps on the surface of the fabric exclude the harmful effects of the warp during shedding and fabric formation on the loom (Table 1).

Example 4. Reinforcing woven filler (prototype) is a unidirectional fabric containing synthetic or natural fiber as the basis, and single boric threads in a weft. Density on the basis of 2 - 20 threads / cm on a duck less than 90 threads / cm.

In tab. 1 given the composition of the reinforcing filler, in table. 2 - comparative characteristics of materials.

The proposed reinforcing woven filler of structural plastics based on a combination of polyamide and boron fibers used for the manufacture of products with increased rigidity and compressive strength reduces the weight of structural elements by 25-30 / 30% compared to fiberglass and 40-50% compared to with metals (Table 2).

On the basis of the obtained reinforcing filler, a structural organoboroplastic was created, which has higher strength and stiffness indices compared to traditional structural materials.

Destructive stress during stretching of organoborplasty is 2.5 times as high, rigidity by, 12–15 ° / o higher compared with aluminum alloys, and breaking stress at compression is 15–18% higher than fiberglass.

Table 1

18

29

11 81

nineteen

30 80

Boron fiber 20 28

ten

5: 1 750 510

5.6: 1

, 25: 1 570 390

15: 1

4: 1 700 437

24.4: 1

Claims (1)

Claim Reinforcing woven filler for structural plastics, consisting of a polyamide base and a weft of boron threads, characterized in that, in order to increase strength, it additionally contains polyamide threads braiding weft threads with a pitch of 6-24 times greater than diameter in the following ratio of components, weight. %: Polyamide yarn 80-82 Boron threads 18-20