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Thermosetting glass fiber reinforced phenolic aldehyde composite material for injection and preparation method thereof

A technology of glass fiber and composite materials, which is applied in the field of thermosetting glass fiber reinforced phenolic composite materials for injection and its preparation, which can solve problems such as low adhesion and mechanical properties, poor anti-aging performance, and environmental pollution, and achieve comprehensive and good products High efficiency, fast curing speed, and reduced labor intensity

Pending Publication Date: 2021-04-13
SHANDONG NORTH MODERN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high brittleness of phenolic resin materials, low adhesion and mechanical properties, poor anti-aging performance, and environmental pollution, the purpose of the present invention is to provide a thermosetting glass fiber reinforced phenolic composite material for injection and its preparation method

Method used

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  • Thermosetting glass fiber reinforced phenolic aldehyde composite material for injection and preparation method thereof
  • Thermosetting glass fiber reinforced phenolic aldehyde composite material for injection and preparation method thereof

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preparation example Construction

[0041] The present invention also includes the preparation method of thermosetting glass fiber reinforced phenolic composite material for injection, comprising the following steps:

[0042] (1) Mix 40-50 parts of polyvinyl acetal modified thermosetting phenolic resin, 0.5-1.5 parts of silane coupling agent, and 0.5-1.0 parts of calcium stearate, and add 4-12 parts of ultra-fine aluminum hydroxide to it, 10-20 parts of mica powder, uniformly dispersed with a high-speed disperser to obtain the first mixture;

[0043] Wherein the polyvinyl acetal modified thermosetting phenolic resin is prepared according to the following steps:

[0044] ①Put phenol and 1 / 3 of the total amount of formaldehyde into the reaction kettle, heat up to 50°C under stirring, add light magnesium oxide to it, react at 65-70°C for 1-2 hours, add the total amount of 1 / 3 formaldehyde, react at 80-90°C for 30-60 minutes, then add 1 / 3 of the total amount of formaldehyde, react at 70-80°C for 1-2 hours, add ure...

Embodiment 1

[0053] A thermosetting glass fiber reinforced phenolic composite material for injection, consisting of the following raw materials: 40kg of polyvinyl acetal modified thermosetting phenolic resin, 45kg of glass fiber, 4kg of ultrafine aluminum hydroxide, 10kg of mica powder, 1kg of zinc stearate, Silane coupling agent 0.5kg, calcium stearate 0.5kg, ethanol 5kg, zinc borate 3kg, silicon micropowder 5kg and talcum powder 3kg;

[0054] Wherein the polyvinyl acetal modified thermosetting phenolic resin is prepared according to the following steps:

[0055] ①Put 100kg of phenol and 30kg of formaldehyde into the reaction kettle, heat up to 50°C under stirring, add 40kg of light magnesium oxide to it, react at 65°C for 1 hour, add 30kg of formaldehyde, and react at 80°C for 30 minutes , then add 30kg of formaldehyde, react at 70°C for 2 hours, add 60kg of urea and react for 30 minutes, then cool to room temperature to obtain a thermosetting phenolic resin;

[0056] ② Dissolve 4kg of ...

Embodiment 2

[0058] A thermosetting glass fiber reinforced phenolic composite material for injection, consisting of the following raw materials: 50kg of polyvinyl acetal modified thermosetting phenolic resin, 55kg of glass fiber, 12kg of ultrafine aluminum hydroxide, 20kg of mica powder, 5kg of zinc stearate, Silane coupling agent 1.5kg, calcium stearate 1.0kg, ethanol 10kg, zinc borate 5kg, silicon micropowder 7kg and talcum powder 6kg;

[0059] Wherein the polyvinyl acetal modified thermosetting phenolic resin is prepared according to the following steps:

[0060] ①Put 150kg of phenol and 50kg of formaldehyde into the reaction kettle, heat up to 50°C under stirring, add 60kg of light magnesium oxide to it, react at 70°C for 2 hours, add 50kg of formaldehyde, and react at 90°C for 60 minutes , then add 50kg of formaldehyde, react at 70°C for 1 hour, add 90kg of urea and react for 20 minutes, then cool to room temperature to obtain a thermosetting phenolic resin;

[0061] ② Dissolve 10kg ...

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Abstract

The invention discloses a thermosetting glass fiber reinforced phenolic composite material for injection and a preparation method thereof. The composite material is prepared from the following raw materials: phenolic resin, glass fibers, superfine aluminum hydroxide, mica powder, zinc stearate, a silane coupling agent, polyvinyl acetal modified thermosetting phenolic resin and the like. The thermosetting glass fiber reinforced phenolic aldehyde composite material for injection can be formed by utilizing injection molding and mould pressing processes, the injection molding manufacturability is good, the surface of a formed part is flat and smooth, continuous production can be realized through the injection molding, the efficiency is improved, and the comprehensive yield of products is high; injection molding of the material can be operated mechanically in the whole process, operators are reduced, labor intensity is reduced, and production efficiency is improved; and parts prepared from the material are high in curing speed and high in production efficiency, and have good technical economy.

Description

technical field [0001] The invention relates to the technical field of phenolic resin composite materials, in particular to a thermosetting glass fiber reinforced phenolic composite material for injection and a preparation method thereof. Background technique [0002] Phenolic resin composite materials are widely used due to their high friction coefficient, low energy consumption and dimensional stability, especially their excellent oil resistance, heat resistance and impact resistance. There are a wide range of applications. However, the current phenolic resin composite materials are mainly based on the compression molding process, which has a trend of long production cycle, high labor intensity, low efficiency and increasing labor costs year by year. On the other hand, the process of compression molding is poor. The surface of the piece is rough; [0003] In addition, the current phenolic resin material itself also has some problems, such as high brittleness, low adhesio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/10C08L29/14C08L61/32C08K13/04C08K7/14C08K3/34C08K5/09C08K5/12C08J5/04
CPCC08J5/043C08J2361/10C08J2429/14C08J2461/32C08K13/04C08K7/14C08K3/34C08K5/09C08K5/12
Inventor 胡恂业胡学朝袁森王桂伦赵富国王见朋
Owner SHANDONG NORTH MODERN CHEM IND
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