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Thermoplastic composite

A composite material and thermoplastic technology, applied in the direction of fiber type, textile and papermaking, fiber processing, etc., can solve the problems of difficult molding, difficult to evenly distribute reinforcing fibers, high melt viscosity of thermoplastic resin, and achieve the effect of solving the difficulty of impregnation.

Inactive Publication Date: 2016-03-02
合肥仲农生物科技有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

The reason is that thermal creeping composite materials are difficult to form, that is, the viscosity of thermoplastic resin melt is very high, and it is difficult to evenly distribute in the reinforcing fibers to form composite materials

Method used

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Embodiment Construction

[0012] The present invention will be described in detail below in conjunction with embodiments.

[0013] A thermoplastic composite material, in parts by weight, comprising 25-31 parts of caprolactam, 23-31 parts of toluene diisocyanate, 21-27 parts of sodium hydroxide, 19-23 parts of Grignard reagent, 3-7 parts 2-5 parts of Kevlar fabric, 2-5 parts of silane coupling agent.

[0014] Among them, sodium hydroxide and toluene diisocyanate were analytically pure.

[0015] Wherein, the method for preparing the composite material comprises the following steps: distilling the caprolactam under reduced pressure for 4 hours under the protection of argon, and rapidly stirring with the Grignard reagent to form a polymer; The polymer was vacuum-baked at 150°C for 4 hours, then laid out in a mold, sodium hydroxide and silane coupling agent were added, mixed thoroughly, and then heated rapidly to 160°C for polymerization.

[0016] Wherein, the surface of the Kevlar fabric is impregnated w...

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Abstract

The invention discloses a thermoplastic composite which comprises the following components in parts by weight: 25-31 parts of caprolactam, 23-31 parts of toluene diisocynate, 21-27 parts of sodium hydroxide, 19-23 parts of a Grignard reagent, 3-7 parts of Kevlar fiber fabric and 2-5 parts of a silane coupling agent. According to the invention, the activated monomer with low viscosity is adopted for impregnating the Kevlar fiber fabric and then in-situ polymerization is carried out in place, so that the thermoplastic composite is obtained, and the problem of difficulty in high-viscosity resin melt impregnation is solved; in addition, impregnation is carried out in the place of the reinforced fiber or fabric composition, so that the thermoplastic composite with high toughness and impact resistance is obtained.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a thermoplastic composite material. Background technique [0002] Compared with thermosetting composite materials, thermoplastic composite materials have excellent impact resistance, are easy to form, repair and reuse, and are very beneficial to environmental protection, so they are very popular. At present, thermoplastic composite materials that have reached production scale at home and abroad are limited to composite materials reinforced with chopped fibers and composite materials reinforced with a very small amount of glass fiber mat. The reason is that thermal creeping composite materials are difficult to form, that is, the melt viscosity of thermoplastic resin is very high, and it is difficult to evenly distribute among the reinforcing fibers to form composite materials. Contents of the invention [0003] The purpose of the present invention is to overcome the above pro...

Claims

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Application Information

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IPC IPC(8): C08G18/60C08G69/14D06M13/395D06M101/36
CPCC08G18/603C08G69/14D06M13/395D06M2101/36
Inventor 杨磊
Owner 合肥仲农生物科技有限公司
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