Glass fiber reinforced silicone resin composite material and preparation method thereof

A technology for reinforcing resin-based and composite materials. It is applied in the field of fiber-reinforced polymer-based composite materials. It can solve problems such as poor interface performance, difficulty in ensuring product quality, and stress concentration, and achieve good fluidity, high temperature resistance, and mechanical properties. , the effect of good molding performance

Active Publication Date: 2018-09-14
SHANGHAI ELECTRIC CABLE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the heat resistance of silicone resin is excellent, due to the low polarity of silicone molecules, the wettability of fibers is poor, resulting in poor interfacial properties of silicone resin-based composites, which limits the use of silicone resin-based composites as structural materials Applications
[0004] For fiber-reinforced resin-based composite materials, continuous fiber or fiber fabric reinforcement materials are mainly used to form plates or rotating body profiles. It is difficult to form special-shaped parts, and it is easy to cause stress concentration at the corners of special-shaped parts, and product quality is difficult to guarantee.

Method used

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  • Glass fiber reinforced silicone resin composite material and preparation method thereof
  • Glass fiber reinforced silicone resin composite material and preparation method thereof
  • Glass fiber reinforced silicone resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Silicone oil and initiator are not added in the formula of this embodiment.

[0048] The composite material in the embodiment of the present application includes the following raw material components and parts by mass:

[0049]

[0050]

[0051] First, glass fiber, nano titanium dioxide and mica powder were pretreated with N-β-aminoethyl-γ-aminopropyltrimethoxysilane. Specifically: put the glass fiber, nano-titanium dioxide and mica powder in an oven at 500°C and burn them at high temperature, then soak them in the coupling agent solution for 1 hour after cooling, and soak the glass fiber, nano-titanium dioxide and mica powder at 80°C Dry it at 130°C for 3 hours, and cool it for later use. The coupling agent solution includes 20wt% coupling agent, 70wt% ethanol and 10wt% water.

[0052] Then, at 50° C., the methyl silicone resin, 6 mm chopped glass fiber, nano-titanium dioxide and mica powder were mixed for 10 minutes using a kneader to obtain a prepreg.

[005...

Embodiment 2

[0055] In this embodiment, the glass fiber reinforced silicone resin-based composite material includes the following raw material components and parts by weight:

[0056]

[0057] First, the glass fiber, nano silicon dioxide and nano aluminum oxide are pretreated with vinyl tris (β-methoxyethoxy) silane. The specific steps are: place the glass fiber and nano-silicon dioxide in an oven at 400°C for high-temperature burning, then soak in the coupling agent solution for 1 hour after cooling, and soak the glass fiber and nano-silicon dioxide at 50°C Dry it, then place it at 100°C for 3 hours, and cool it for later use. Described coupling agent solution comprises the coupling agent of 20wt%, the ethanol of 70wt% and the water of 10wt%

[0058] Then, at 70°C, mix methylphenyl vinyl silicone resin, 25mm glass fiber, nano-silica, nano-alumina and vinyl silicone oil with a kneader for 10 minutes, and then add 2,5-dimethyl-2 , 5-bis(tert-butyl peroxy)hexane continued to mix for 5-1...

Embodiment 3

[0060] In this embodiment, the glass fiber reinforced silicone resin-based composite material includes the following raw material components and parts by weight:

[0061]

[0062] First, glass fiber, quartz powder and nano-zinc oxide are pretreated with tetra-n-butyl titanate coupling agent, and then at 70°C, methyl vinyl silicone resin, 16mm glass fiber, quartz powder, nano-zinc oxide Mix with vinyl silicone oil for 20 minutes using an open mill. Then add tert-butyl peroxide cumene and continue mixing for 5-15 minutes to obtain a prepreg. Put the prepreg into the mold for molding, the molding temperature is 165-170°C, the pressure is 5-7MPa, the time is 15min, and then it is post-cured at 260°C for 12h to obtain the finished product.

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PUM

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Abstract

The invention provides a glass fiber reinforced silicone resin composite material. The glass fiber reinforced silicone resin composite material is composed of raw materials including, by weight part,20-80 parts of silicone resin, 5-50 parts of glass fiber, 10-50 parts of filling and 0.1-5 parts of coupling agent. The glass fiber reinforced silicone resin composite material is good in shaping andprocessing performance, achieves high flowing properties at above 130 DEG C and can be shaped and processed through compression moulding, injection moulding and the like and be particularly applicableto being shaped and processed into special-shaped structural components.

Description

technical field [0001] The invention relates to the field of fiber-reinforced polymer-based composite materials, in particular to a glass fiber-reinforced silicone resin-based composite material and a preparation method thereof. Background technique [0002] For high-performance resin-based composite materials, epoxy resin, cyanate resin and polyimide resin all have good heat resistance properties, but when the composite materials are used under high temperature conditions, the mechanical properties attenuate seriously and cannot be used as a heat-resistant material. High temperature structural materials are used. Although the long-term service temperature of polyimide resin-based composite materials can reach more than 300 ° C, its molding and processing are difficult, mainly based on non-automatic processes, product reliability is not high, and manufacturing costs remain high. Silicone resin-based composite materials have excellent heat resistance, weather resistance and ...

Claims

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Application Information

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IPC IPC(8): C08L83/04C08L83/07C08K9/06C08K9/04C08K7/14C08K3/22C08K3/34C08K3/36C08K5/14C08J5/08
CPCC08J5/08C08J2383/04C08K2003/2296C08K9/06C08K9/04C08K7/14C08K2003/2227C08K2003/2241C08K2201/011C08J2483/04C08K3/36C08K3/34C08K5/14
Inventor 韩永进洪宁宁潘国梁李小虎颜俊李福
Owner SHANGHAI ELECTRIC CABLE RES INST
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