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Preparation of shell micro-powder reinforced super-high molecular weight polyethylene fibre composite non woven cloth

A polyethylene fiber, ultra-high molecular weight technology, applied in the direction of polymer adhesive additives, adhesive additives, textiles and papermaking, etc., can solve the problems of increased load, poor comprehensive mechanical strength, poor heat resistance, etc.

Inactive Publication Date: 2010-05-19
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, this kind of composite non-weft fabric, due to the shortcomings of the adhesive itself as the matrix, affects the comprehensive performance of the composite non-weft fabric, which is reflected in poor heat resistance, poor comprehensive mechanical strength, and severe creep. UHMWPE fiber composite non-weft fabric cannot effectively "passivate" the impact of bullets, and can only achieve bulletproof effect by increasing the number of non-weft fabric layers, but this will increase the load of general soldiers and police

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Disperse a certain amount of pretreated shell powder in the ethanol solution under the action of ultrasound, the weight ratio of shell powder: ethanol is 1:5, then add titanate coupling agent DNZ-201, the concentration is 25wt%, coupling agent The added amount is 2% of the fine shell powder, heated and refluxed under stirring, and reacted for 8-12 hours, and then the filtered shell fine powder is dried and ground to obtain the shell fine powder modified by the coupling agent.

[0034] Mix a certain amount of modified shell powder with the adhesive, stir at 60-80°C for 1-2h, and vacuum defoam for later use. The reinforcement UHMWPE fibers are wound in parallel on the winder, and then glued on the UHMWPE fibers (or the UHMWPE fibers are immersed in the adhesive). The number of glue application is 1-2 times, pay attention to the uniform application of glue. The adhesive used in this embodiment is isoprene rubber, which is soluble in water by weight ratio of 20%-60%. After...

Embodiment 2

[0038] In addition to the addition of shell powder is 4.4g / m 2 Except for the non-weft cloth, the others were the same as in Example 1 to obtain a composite non-weft cloth.

[0039] Bulletproof effect: 40 layers, 400mm×400mm, AD=150g / m 2The UD materials are stacked neatly on the target frame with the backing of clay. According to the GA141-2001 test standard, the Type 54 7.62mm pistol and the Type 51 ordinary bullet (lead-core bullet) are used. The measured value is: V 50 ≥500m / s; Depression of backing material <25mm.

[0040] Conduct temperature adaptability test: put the bulletproof non-weft fabric of this embodiment in a constant temperature box at -25°C or 60°C for at least 4 hours, and then conduct the above shooting test. The result meets the standard requirements of GA141-2001.

Embodiment 3

[0042] Except that the titanate coupling agent was changed to epoxy resin prepolymer, the others were the same as in Example 1 to obtain a composite non-woven fabric. The mixing amount of shell powder is 7.2g / m 2 No weft.

[0043] Bulletproof effect: 40 layers, 400mm×400mm, AD=160g / m 2 The UD materials are stacked neatly on the target frame with the backing of clay. According to the GA141-2001 test standard, the Type 54 7.62mm pistol and the Type 51 ordinary bullet (lead-core bullet) are used. The measured value is: V 50 ≥540m / s; Depression of backing material <25mm.

[0044] Conduct temperature adaptability test: put the bulletproof non-weft fabric of this embodiment in a constant temperature box at -25°C or 60°C for at least 4 hours, and then conduct the above shooting test. The result meets the standard requirements of GA141-2001.

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PUM

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Abstract

The present invention relates to superfine shell powder reinforced composite weftless fabric of ultrahigh molecular weight polyethylene (UHMWPE) and its making process. Adding superfine shell powder into the laminated material can raise bullet-proof performance via making the fiber absorb even more impact energy of bullet and raise the heat resistance. The making process of the reinforced composite weftless fabric includes the following steps: 1. pre-treating shell powder to make its surface contain functional group; 2. modifying the pre-treated shell powder for homogeneous dispersing in the base adhesive; 3. mixing the modified shell powder and adhesive; 4. spreading UHMWPE; 5. spreading adhesive onto UHMWPE; and 6. stoving. Test shows that the superfine shell powder reinforced compositeweftless fabric of UHMWPE has 5 deg.c raised use temperature and about 20 % raised impact resistance.

Description

technical field [0001] The invention belongs to the field of bulletproof protective products, in particular to the preparation of shell micropowder reinforced ultra-high molecular weight polyethylene (UHMWPE) fiber composite non-weft fabric. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber composite non-weft fabric is made of UHMWPE fibers after they are uniformly, parallel and straight arranged, glued and dried. US4,916,000 and US5,149,391 have described this process. The glued adhesives generally include polyethylene, cross-linked polyethylene, polypropylene, vinyl copolymer, propylene copolymer, ethylene-propylene copolymer and other olefin polymers and copolymers, as well as unsaturated polyester, polybutylene Many low-modulus resins such as diene, polyisoprene, natural rubber, epoxy resin, polyimide, etc., in addition, there are EVA, EEA, SBS, SIS, TPR, SEBS, etc. Styrene, PVB, PVA, etc., these thermoplastic high-tough glues. Thes...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N7/00C09J11/08C08F251/00
Inventor 王依民刘术佳王佳
Owner DONGHUA UNIV
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