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Modified phenolic resin semi-impregnation aramid fiber prepreg

A technology of aramid fiber and phenolic resin, which is applied in the field of composite materials for bulletproof helmets, can solve the problems of high impregnation rate and unsatisfactory anti-ballistic performance of aramid composite materials, and achieve low porosity, light weight and good flexibility Effect

Active Publication Date: 2013-02-06
SHANDONG NON METALLIC MATERIAL RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies and applications on semi-pregs. CN 101492573A relates to semi-impregnated prepregs of thermosetting resin system. The anti-ballistic performance of the material cannot meet the needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0021] The surface density used is 300g / m 2 U.S. DuPont K-129 aramid fiber plain weave as reinforcement, PF-9301B (50% solid content) as resin matrix, and SD-3 polyvinyl butyral (10% ethanol solvent) as modifier , with oleic acid as the internal release agent, resin: modifier: the ratio of release agent is 60:40:1 to make modified phenolic resin. According to 254g / m 2 Proportion Use a spray gun to spray the modified phenolic resin on the release paper. When the solvent of the modified phenolic resin is volatilized but still has a certain viscosity, paste the aramid fiber cloth and press it to compound. After the resin is completely dry, remove the release paper. A semi-impregnated aramid fiber composite material prepreg is obtained. The prepreg resin film has good flexibility and no stickiness, the resin impregnation rate is 15%, and the resin content is 14%.

[0022] The weight of the bullet-proof helmet shell prepared with 22 layers of this prepreg is 1.18Kg, and a 1.1g s...

Embodiment 3

[0024] The surface density used is 410g / m 2 Japan's Teijin 2000 aramid fiber plain weave fabric is used as reinforcement, S-157 phenolic resin (55% solid content) is used as resin matrix, polyvinyl formal (10% ethanol toluene solution) is used as modifier, and oleic acid It is an internal release agent, and the ratio of resin:modifier:release agent is 55:45:1 to make a modified phenolic resin. According to 308g / m 2 Proportion Use a glue applicator to hang glue on the release paper. When the resin is dried but still has a certain viscosity, the aramid fiber cloth is pasted and laminated under pressure. After the solvent is completely evaporated, the release paper is peeled off to obtain a semi-impregnated resin. Aramid composite material prepreg. The prepreg resin film has good flexibility and no stickiness, the resin impregnation rate is 10%, and the resin content is 12%.

[0025] The weight of the shell of the bulletproof helmet prepared with 16 layers of the prepreg is 1....

Embodiment 4

[0027] Use surface density of 500g / m 2 The American DuPont K-129 aramid fiber plain weave cloth is used as reinforcement, with EXP0334 type phenolic resin (50% solid content) as the matrix, polyvinyl formal (10% ethanol solution) and polyvinyl formal ( 10% ethanol toluene solution) as modifier (ratio 1:1), oleic acid as internal release agent, resin:modifier:release agent ratio is 65:35:1, made modified phenolic resin. According to 266g / m 2 Ratio Manually spray the modified phenolic resin with a spray gun on the release paper. After the solvent of the modified phenolic resin is completely volatilized, paste the aramid fiber cloth, heat and pressurize the resin to impregnate the aramid fiber, and wait until the resin is completely cooled. Finally, the release paper is peeled off to obtain a semi-impregnated aramid composite material prepreg. The prepreg resin film has good flexibility and no stickiness, the resin impregnation rate is 8%, and the resin content is 10%.

[002...

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Abstract

The invention belongs to the technical field of armor protection materials, relates to a human protection material technology, and in particular relates to a composite material for a bulletproof helmet. According to the modified phenolic resin semi-impregnation aramid fiber prepreg, the bonding strength and toughness of the phenolic resin are adjusted through a modifier, and the matrix resin part is impregnated with aramid fiber. The modified phenolic resin semi-impregnation aramid fiber prepreg consists of a modified phenolic resin and an aramid fiber fabric, wherein the matrix resin part is impregnated with aramid fiber; the impregnation rate is between 5 and 20 percent; and the mass percentage of the resin is between 8 and 18 percent. The prepreg has high glue content uniformity and high flexibility and is convenient to use, and a bulletproof aramid composite material product prepared by the prepreg is low in porosity, light in weight, high in structural strength and excellent in bulletproof performance and is applied to the field of human protection and armor protection.

Description

technical field [0001] The invention belongs to the technical field of armor protection materials, and relates to semi-impregnated prepregs and related structural composite materials, to the technology of human body protection materials, and in particular to composite materials for bulletproof helmets. Background technique [0002] In the field of human body protection, especially bulletproof helmets, there are not only requirements for anti-elastic performance, but also high requirements for weight, structural strength and applicability in high and low temperature environments. Therefore, it is necessary to use high Performance fiber composites. [0003] Aramid fiber has the characteristics of high strength and high modulus, so high-performance fiber bulletproof composite materials mostly use aramid fiber as reinforcement. Phenolic resin has excellent mechanical properties, heat resistance and electrical insulation, and has fast molding speed and low cost, so it is an idea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/12B32B27/18
Inventor 李华惠林海王慧军丁笑晖金子明刘发杰李英建杨英清张璐杨兴娟
Owner SHANDONG NON METALLIC MATERIAL RES INST
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