Method for preparing bulletproof formed part

A molding and pre-press molding technology, applied in protective equipment, chemical instruments and methods, offensive equipment, etc., can solve the problems of reducing the bulletproof performance of bulletproof moldings and increasing bulletproof pieces

Inactive Publication Date: 2010-01-20
杨珍芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology does not have a pre-compression molding process. Since the composite of resin and fibers in the non-woven fabric is not very uniform, and pre-compression molding can make the resin more uniformly distributed in the fibers, this method will increase the strength of the bulletproof parts. Defects that reduce the ballistic performance of ballistic-resistant moldings

Method used

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  • Method for preparing bulletproof formed part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 , is the flow chart of the process for preparing bulletproof molded parts of the present invention. Will have count be 200, the Dyneema SK75 (intensity is 35cN / dtex, modulus is 1100cN / dtex) fiber that Holland DSM company produces is parallel-oriented on the plane, the KRATON G-1650 that kraton company produces is according to weight ratio 22 % Dissolved in No. 120 solvent oil (2,3-butanedione) as an adhesive and compounded with fibers to make a surface density of 40g / m 2 The weight of the fiber in the single-layer non-woven fabric is 32g.

[0028] Take 65 layers of the above-mentioned single-layer non-woven fabrics to be superimposed on each other, and the fibers in the adjacent non-woven fabrics are arranged at 0° / 90°, and a pressure of 0.3MPa is applied to the lamination of the non-weft fabrics so that the air between the layers is selected. After heating up to 115°C, a pressure of 2.5MPa is applied for pre-compression molding.

[0029] Put the pre-pre...

Embodiment 2

[0032] With a count of 200, the fibers of Dyneema SK75 produced by DSM Company are oriented in parallel on the plane, and KRATON D-1107 produced by Kraton Company is dissolved in No. 120 solvent oil according to the weight ratio of 18% as an adhesive after compounding with the fiber The surface density is 38g / m 2 The weight of the fiber in the single-layer non-woven fabric is 31.5g.

[0033] Take 66 layers of the above-mentioned single-layer non-woven fabrics to be superimposed on each other, and the fibers in the adjacent non-woven fabrics are arranged at 0° / 90°, and a pressure of 0.4MPa is applied to the lamination of the non-weft fabrics to escape the air between the layers. Then heat up to 115°C and apply a pressure of 2.5 MPa for pre-compression molding.

[0034] Place the pre-pressed non-weft cloth lamination in a vacuum oven at a temperature of 128°C for 60 minutes to keep warm for 60 minutes. The vacuum degree of the vacuum oven is 0.18kpa. After heat preservation, co...

Embodiment 3

[0037] Will have count be 200, the Dyneema 76 (intensity is 37cN / tex, modulus is 1200cN / tex) fiber that Holland DSM company produces is parallel-oriented on the plane, the KRATON G-1650 that kraton company produces is according to weight ratio 22 % Dissolved in No. 120 solvent oil (2,3-butanedione) as an adhesive and compounded with fibers to make a surface density of 39.6g / m 2 The weight of the fiber in the single-layer non-woven fabric is 31.6g.

[0038] Take 64 layers of the above-mentioned single-layer non-woven fabrics to be superimposed on each other, and the fibers in the adjacent non-woven fabrics are arranged at 0° / 90°, and a pressure of 0.3MPa is applied to the lamination of the non-woven fabrics to make the air between the layers escape. After heating up to 115°C, a pressure of 2.5MPa is applied for pre-compression molding.

[0039] Put the pre-pressed non-weft cloth lamination in a vacuum oven at a temperature of 125°C for 60 minutes. The vacuum degree of the vacu...

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Abstract

The invention discloses a method for preparing a bulletproof formed part, which comprises the steps of: a) overlapping more than two layers of high-performance fiber weftless cloth, imposing the pressure of between 0.1 and 1MPa to ensure that the air among the weftless cloth escapes, then increasing the temperature of the weftless cloth to be between 110 and 120 DEG C, and then imposing the pressure of between 1 and 3MPa for pre-press forming; b) performing heat preservation on the weftless cloth after the pre-press forming for 20 to 120min under the vacuum condition that the temperature is between 120 and 130 DEG C and the pressure is lower than 0.5kpa; and c) imposing the pressure of between 10 and 20MPa on the weftless cloth after the vacuum treatment in a hot pressing mold with a temperature of between 120 and 130 DEG C, performing heat preservation and pressure maintaining for 20 to 60min, and then cooling the weftless cloth to room temperature to obtain the bulletproof formed part. An adhesive in the weftless cloth has good fluidity at high temperature, so the pre-press forming and the subsequent vacuum treatment of the weftless cloth can ensure that the bonding of fiber andthe adhesive is evener, reduce the defects such as pores and the like, and improve the bulletproof performance of the weftless cloth.

Description

technical field [0001] The invention relates to a preparation method of personal protective equipment, in particular to a preparation method of a bulletproof molding. Background technique [0002] Bulletproof molded parts refer to personal protective equipment such as bulletproof vests and bulletproof helmets worn in specific environments to ensure human survival. It can absorb and dissipate the kinetic energy of warheads and fragments, prevent penetration, and effectively protect the protected parts of the human body. [0003] Although the protective equipment made of traditional steel materials can meet the bulletproof requirements, due to the disadvantages of heavy weight, too strong rigidity and poor comfort of steel materials, not only will the user's mobility be restricted, but there is also the risk of bouncing and hurting people . With the continuous advancement of material science, the advent of high-tech synthetic fibers such as aramid (Kevlar) fibers and ultra-hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H1/00B32B37/10B32B37/06
Inventor 周成程
Owner 杨珍芬
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