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Method for producing composite non-woven cloth material from irradiated ultrahigh molecular weight polyethylene fiber

A technology of ultra-high molecular weight and polyethylene fiber, which is applied in the direction of fiber type, fiber treatment, non-woven fabrics, etc., can solve the problems of large ratio of resin glue to fiber, heavy weight, poor adhesion between fiber and resin matrix, etc., and achieve reduction Surface density, reduced dosage, and improved interfacial bonding performance

Inactive Publication Date: 2012-04-04
SURREY HI TECH INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these production methods cannot avoid the shortcomings of UHMWPE fiber itself. Due to the poor adhesion between the fiber and the resin matrix, the method of increasing the amount of resin glue is usually used in the processing of composite non-woven fabric materials, which makes the material The ratio of resin glue to fiber is too large; or the method of multi-layer protective film is used in its product structure, which makes the fiber appear better bonded apparently, but has no real effect on improving the ballistic performance of the material
Defects of these methods: the density of the bulletproof surface of the composite non-woven fabric material remains high, resulting in heavy weight of finished products such as bulletproof vests and bulletproof vests, which cannot meet the requirements of human wearing comfort

Method used

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  • Method for producing composite non-woven cloth material from irradiated ultrahigh molecular weight polyethylene fiber
  • Method for producing composite non-woven cloth material from irradiated ultrahigh molecular weight polyethylene fiber
  • Method for producing composite non-woven cloth material from irradiated ultrahigh molecular weight polyethylene fiber

Examples

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Effect test

Embodiment 1

[0026] Such as Figure 1-2 As shown, a method for making ultra-high molecular weight polyethylene fiber composite non-weft cloth sheet, multiple strands of ultra-high molecular weight polyethylene fibers are bundled through a bundle guide roller 1 and spread in parallel to control the laying of ultra-high molecular weight polyethylene fibers Speed ​​is 5m / min, by grafting liquid tank 2, the grafting liquid in this grafting liquid tank 2 is made of deionized water, acrylic acid, trichloroethylene, CuSO 4 Composition, based on deionized water, the concentration of acrylic acid is 6mol / L, the concentration of trichlorethylene is 1mol / L, CuSO 4 The concentration is 0.002mol / L. Using JJ-2 electrostatic accelerator, at room temperature, N 2 The ultra-high molecular weight polyethylene fiber impregnated with the above-mentioned grafting solution is introduced into the electron beam irradiation device 4 through the pulling roller 3 under the atmosphere for irradiation, and the avera...

Embodiment 2

[0028] A method for making ultra-high molecular weight polyethylene fiber composite non-weft cloth sheets, the method first controls the laying speed of ultra-high molecular weight polyethylene fibers to be 8m / min, passes through a grafting liquid tank, and the grafting liquid tank is formed by removing Ionized water, methacrylic acid, dichloroethane, CuSO 4 composition. Based on deionized water, the concentration of methacrylic acid is 10mol / L, the concentration of dichloroethane is 2.5mol / L, CuSO 4 The concentration is 0.01mol / L. Using JJ-2 electrostatic accelerator, at room temperature, N 2 The ultra-high molecular weight polyethylene fibers impregnated with the above-mentioned grafting solution were irradiated under the atmosphere, and the average dose rate was 40KGy / S. The irradiated fiber enters the dipping tank, the adhesive is EEA, the concentration is 22%. After the dipping, the tow containing the adhesive is treated with a parallel scraper on both sides, and then ...

Embodiment 3

[0030] A method for making ultra-high molecular weight polyethylene fiber composite non-weft cloth sheets, the method first controls the laying speed of ultra-high molecular weight polyethylene fibers to be 10m / min, passes through a grafting liquid tank, and the grafting liquid tank is formed by removing Ionized water, methyl acrylate, trichloroethylene, CuSO 4 composition. Based on deionized water, the concentration of methyl acrylate is 15mol / L, the concentration of trichlorethylene is 4.2mol / L, CuSO 4The concentration is 0.05mol / L. JJ-2 type electrostatic accelerator was used to irradiate the ultra-high molecular weight polyethylene fiber impregnated with the above grafting liquid at room temperature and Ar atmosphere, with an average dose rate of 60KGy / S. The irradiated fiber enters the dipping tank, the adhesive is EVA, the concentration is 20%, and the fiber / adhesive weight ratio in the unidirectional non-woven fabric is 85:15.

[0031] Then unwind the first layer of ...

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Abstract

The invention relates to a method for producing a composite non-woven fabric material from irradiated ultrahigh molecular weight polyethylene (UHMWP) fiber. The method comprises the following steps of: (1) spreading a plurality of strands of ultrahigh molecular weight polyethylene fiber in parallel by using a guide roller after passing through a buncher, and impregnating the fiber in a grafting liquid; (2) irradiating the fiber impregnated in the grafting liquid to realize grafting, and sending the fiber into a glue dipping groove; (3) processing glue on double surfaces of adhesive-containing filament bundles by using parallel scrappers, and drying the filament bundles to obtain a one-way non-woven fabric; (4) producing composite non-woven fabric sheets or coils to obtain a composite non-woven fabric material. Compared with the prior art, the method has the advantages that an electron beam irradiation grafting technology is introduced into a UD cloth production method in the invention, so that the UHMWP fiber can be grafted and modified through mutual irradiation, and interfacial adhesive performances of the fiber and the adhesive can be improved; and therefore, the consumption of the adhesive is reduced during the production of the one-way non-woven fabric, application of a protective film is eliminated, and finally surface density of the composite non-woven fabric material is reduced.

Description

technical field [0001] The invention belongs to the field of manufacturing polymer composite materials, and in particular relates to a method for manufacturing a novel irradiated ultra-high molecular weight polyethylene fiber composite non-woven fabric material. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is a high-performance fiber developed by the Dutch DSM company in the early 1980s with its original gel spinning-super-stretching technology. It is after carbon fiber and aramid (Kevlar) fiber. The third generation of high-performance fibers. The relative molecular weight of ultra-high molecular weight polyethylene (UHMWPE) fibers is between 1 million and 6 million. The molecular status is a linear extended chain structure, and the degree of orientation is close to 100%. It has good mechanical properties. UHMWPE fiber also has excellent properties such as wear resistance, bending resistance, tension fatigue resistance, and cutting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/4291D04H1/645D04H1/74D06M14/28D06M15/227D06M101/20
Inventor 辛志荣孙非
Owner SURREY HI TECH INC
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