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Preparation method of white carbon black enhanced UHMWPE (ultrahigh molecular weight polyethylene) fiber composite non-weft fabric

A polyethylene fiber, ultra-high molecular weight technology, applied in non-polymer adhesive additives, conjugated diene adhesives, non-woven fabrics, etc., can solve poor heat resistance, poor comprehensive mechanical strength, and increase the number of users and other issues, to achieve excellent anti-shock performance, improve stab and ballistic performance, and improve impact resistance and heat resistance.

Active Publication Date: 2013-04-03
JIANGSU LINRY NEW MSTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the shortcomings of the adhesive itself as the matrix, this composite non-weft fabric affects the comprehensive performance of the composite non-weft fabric, which is specifically reflected in: poor heat resistance, poor comprehensive mechanical strength, and severe creep; The UHMWPE fiber composite non-weft fabric cannot effectively blunt the impact of bullets, and the bulletproof effect can only be achieved through the number of layers of non-weft fabric, but this will increase the load on users, such as 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

[0025] This example is a method for preparing a white carbon black reinforced ultra-high molecular weight polyethylene fiber composite non-woven fabric, which is prepared according to the following steps:

[0026] (1) Pretreatment of white carbon black, vapor deposition (CAV) method, the raw materials are silicon tetrachloride, oxygen (or air) and hydrogen, reacted at high temperature, the reaction formula is: SiCl 4 +2H 2 +O 2 —> SiO2 2 +4HCl, air and hydrogen are respectively sent to the synthetic hydrolysis furnace after being pressurized, separated, cooled and dehydrated, dried on silica gel, and dust-removed and filtered. Send the silicon tetrachloride raw material to the rectification tower for rectification, then heat and evaporate in the evaporator, and use the dried and filtered air as the carrier to send it to the synthetic hydrolysis furnace. After silicon tetrachloride is gasified at high temperature (flame temperature 1000-1800°C), hydrogen and oxygen (or air) ...

Embodiment 2

[0033] This example is a method for preparing a white carbon black reinforced ultra-high molecular weight polyethylene fiber composite non-woven fabric, which is prepared according to the following steps:

[0034] (1) Pretreatment of white carbon black, vapor deposition (CAV) method, the raw materials are silicon tetrachloride, oxygen (or air) and hydrogen, reacted at high temperature, the reaction formula is: SiCl 4 +2H 2 +O 2 —> SiO2 2+4HCl, air and hydrogen are respectively sent to the synthetic hydrolysis furnace after being pressurized, separated, cooled and dehydrated, dried on silica gel, and dust-removed and filtered. Send the silicon tetrachloride raw material to the rectification tower for rectification, then heat and evaporate in the evaporator, and use the dried and filtered air as the carrier to send it to the synthetic hydrolysis furnace. After silicon tetrachloride is gasified at high temperature (flame temperature 1000-1800°C), hydrogen and oxygen (or air) u...

Embodiment 3

[0041] In this example, except that the titanate coupling agent is changed to epoxy resin prepolymer, the others are the same as in Example 1, and the composite non-weft fabric made, the amount of white carbon black incorporated is 7.2g / m 2 No weft.

[0042] Bulletproof effect of this embodiment: 40 layers, 400mm×400mm, AD=162g / m2 UD materials are neatly superimposed on the target frame with the backing of cement, according to the GA141-2001 experimental standard, using a 54-type 7.62mm pistol, a 51 Type ordinary bomb, measured: V50≥530m / s; backing material depression depth <25mm.

[0043] The temperature adaptability test is carried out in this implementation: the bulletproof non-weft cloth of this embodiment is placed in a constant temperature box with a temperature of -25°C or 60°C for at least 4 hours, and then the above shooting test is carried out, and the result meets the standard requirements of GA141-2001.

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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Abstract

The invention belongs to the field of bulletproof protective products and relates to a preparation method of white carbon black enhanced UHMWPE (ultrahigh molecular weight polyethylene) fiber composite non-weft fabric. The preparation method includes: pretreating white carbon black; further functionally modifying the pretreated white carbon black to allow the white carbon black to be dispersed evenly in matrix adhesives; well mixing the functionally modified white carbon black with the adhesives; sizing the UHMWPE fiber; and drying. By adding gas phase white carbon black, energy caused bullet impact on fibers can be absorbed more, bulletproof performance is improved, and overall heat resistance is improved. Live ammunition tests applied to a certain layers of the composite non-weft fabric according to the GA141-2001 standard shows the composite non-weft fabric completely accords to the requirements of the standard, use temperature is increased by 5 DEG C, and impact resistance is increased by about 20%.

Description

technical field [0001] The invention belongs to the field of bulletproof protective products, in particular to a preparation method of white carbon black reinforced ultra-high molecular weight polyethylene fiber composite non-weft cloth. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber composite non-weft fabric is made of UHMWPE fibers after they are arranged uniformly, parallel and straight, and then glued and dried. The preparation process has been described in US patents US4916000 and US5149391. 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 Diene, polyisoprene, natural rubber, epoxy resin, polyimide and many other low-modulus resins, in addition, there are EVA, EEA, SBS, SIS, TPR, SEBS and other sodium-butadiene rubber and styrene-buta...

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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IPC IPC(8): D04H3/147C09J11/04C09J109/00C09J109/06
Inventor 郭振勤丁旭
Owner JIANGSU LINRY NEW MSTAR TECH
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