A kind of sponge for body armor and preparation method thereof

A technology of body armor and sponge, which is applied in the field of sponge, can solve the problems of large tensile strength depression and deformation, decreased flexibility of the wearer, and insufficient comfort for the wearer, and achieves high tensile strength and tear strength, fine pore size, slow rebound effect

Active Publication Date: 2021-01-05
佛山市惠安家居用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, by adding a buffer layer to reduce blunt trauma behind body armor, elastic materials such as rubber, elastic fiber or natural cotton materials are usually used as buffer layers, but these materials either have insufficient flexibility to make the wearer uncomfortable. Either the tensile strength is not enough to make the depression deform greatly, or when the flexibility and tensile strength are enough, the thickness is too thick, which reduces the wearer's flexibility

Method used

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  • A kind of sponge for body armor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A sponge for bulletproof vests, comprising in parts by weight:

[0050] 25 parts of polyether polyol;

[0051] 25 parts of polymer polyol;

[0052] 40 parts of slow rebound polyether;

[0053] 17 TDIs;

[0054] 1.5 parts of amine catalyst;

[0055] 0.04 part of tin catalyst;

[0056] Tension agent 1.4 parts;

[0057] Toughening agent 0.7 part;

[0058] Silicone oil 0.6 part;

[0059] 0.5 part of water.

[0060] The hydroxyl value of the polyether polyol is 60 mgKOH / g and the molecular weight is 2500; the solid content of the polymer polyol is 43%; the hydroxyl value of the slow rebound polyether is 230 mgKOH / g and the molecular weight is 2300.

[0061] The preparation method of the sponge for bulletproof vests is as follows: mixing polyether polyol, polymer polyol, slow-rebound polyether, amine catalyst, tin catalyst, tensile agent, toughening agent, silicone oil, and water in proportion to 50,000 Stir for 10 to 20 s at a speed of rev / min, atomize and inject TD...

Embodiment 2

[0063] A sponge for bulletproof vests, comprising in parts by weight:

[0064] 40 parts of polyether polyol;

[0065] 15 parts of polymer polyol;

[0066] 50 parts of slow rebound polyether;

[0067] 23 TDIs;

[0068] 3 parts of amine catalyst;

[0069] Tin catalyst 0.07

[0070] Tension agent 1.8 parts;

[0071] Toughening agent 1.6 parts;

[0072] Silicone oil 0.8 part;

[0073] Water 0.6 parts.

[0074] The hydroxyl value of the polyether polyol is 55 mgKOH / g and the molecular weight is 2800; the solid content of the polymer polyol is 48%; the hydroxyl value of the slow rebound polyether is 230 mgKOH / g and the molecular weight is 1900.

[0075] The preparation method of Example 2 is the same as that of Example 1, and the specific steps are shown in Example 1, which will not be repeated here.

Embodiment 3

[0077] A sponge for bulletproof vests, comprising in parts by weight:

[0078] 25 parts of polyether polyol;

[0079] 15 parts of polymer polyol;

[0080] 40 parts of slow rebound polyether;

[0081] 15 TDIs;

[0082] 1.2 parts of amine catalyst;

[0083] Tin catalyst 0.03 part

[0084] Tension agent 1 part;

[0085] 1 part of toughening agent;

[0086] Silicone oil 0. part;

[0087] Water 0.4 parts.

[0088] The hydroxyl value of the polyether polyol is 50 mgKOH / g and the molecular weight is 3200; the solid content of the polymer polyol is 40%; the hydroxyl value of the slow rebound polyether is 240 mgKOH / g and the molecular weight is 2400.

[0089] The preparation method of Example 3 is the same as that of Example 1, and the specific steps are shown in Example 1, which will not be repeated here.

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Abstract

The invention discloses sponge for a body armor and a preparation method of the sponge. The sponge comprises the following components in parts by weight: 25-40 parts of polyether polyol, 15-25 parts of polymer polyol, 40-50 parts of slow rebound polyether, 15-25 parts of TDI, 1.5-4 parts of a catalyst, 2-4 parts of auxiliary agents, 0.5-1 part of silicone oil and 0.4-0.7 parts of water, wherein the auxiliary agents comprise a tension agent and a toughening agent. The method comprises the following steps: proportionally mixing polyether polyol, polymer polyol, slow rebound polyether, a catalyst, auxiliary agents, silicone oil and water, stirring for 10-20 seconds at the rotating speed of 50000 r / min, carrying out high-pressure atomization injection on TDI, stirring for 10 seconds at a highspeed to uniformly mix the raw materials, and carrying out reaction foaming to obtain the sponge for a body armor. The bulletproof sponge provided by the invention has very high density, tensile strength and tearing strength, the pore diameter of the sponge is compact and fine, resilience is slow, strong instantaneous impact force can be resisted, the bulletproof sponge has an excellent buffer effect, and when the bulletproof sponge is used as a buffer layer of a body armor, blunt damage to the body armor is used can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of sponges, in particular to a sponge for bulletproof vests and a preparation method thereof. Background technique [0002] The body armor is mainly composed of two parts: the jacket and the bulletproof layer. The jacket is usually made of chemical fiber fabric; the bulletproof layer is made of metal (special steel, aluminum alloy, titanium alloy), ceramic sheet (corundum, boron carbide, silicon carbide, alumina), glass fiber reinforced plastic, nylon, Kevlar, ultra-high molecular weight polymer Vinyl fibers, liquid protective materials and other materials form a single or composite protective structure. The bulletproof layer can absorb the kinetic energy of the warhead or the shrapnel, and has a significant protective effect on the low-speed warhead or the shrapnel, which can effectively prevent the penetration of the warhead and protect the personnel from the penetrating damage of the projectile. However...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L83/04C08G18/76C08G18/48C08G18/63C08J9/08F41H1/02
CPCC08G18/4072C08G18/4804C08G18/632C08G18/7614C08L75/08F41H1/02C08L83/04
Inventor 邓纳新
Owner 佛山市惠安家居用品有限公司
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