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Preparation method of flame-retardant phenolic resin molding material

A technology of phenolic resin and molding materials, which is applied in the field of thermosetting molding compound preparation to achieve the effect of convenient processing and high strength

Active Publication Date: 2013-10-30
常熟东南塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Phenolic resin has the characteristics of high carbon formation and good temperature resistance, and is used in the aircraft casting industry. However, aircraft casting requires high material strength and good temperature resistance, while ordinary phenolic resin molding materials cannot meet this requirement, so the preparation can be Flame-retardant phenolic resin molding materials that meet this requirement are of positive significance

Method used

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  • Preparation method of flame-retardant phenolic resin molding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] First, 51 parts by weight of silica filler produced by gas phase method, 12 parts of carbon nanofibers with an aspect ratio of 600 to 800 produced by using propane as a carbon source, and alkali-free glass fibers with a length of 3mm 30 parts and 1.1 parts of γ-glycidyl etheroxypropyltrimethoxysilane are put into the container and mixed for 5-6min, and then put into 60 parts of phenolic resin produced by hydrochloric acid method and bisphenol A epoxy resin in parts by weight. 11 parts, 6 parts of hexamethylenetetramine, 1.5 parts of calcium oxide, 6 parts of decabromodiphenylethane, 5 parts of resorcinol tetraphenyl diphosphate and 30% by mass of stearic acid 2 parts of composite release agent composed of magnesium and zinc stearate with a mass percentage of 70%, continue to mix for 5-6min, then transfer to an open mill and heat mix for 6-7min, and finally pull the tablet, cool and pulverize to obtain flame retardant Phenolic resin molding material.

Embodiment 2

[0019] First, 55 parts by weight of silica filler produced by the gas phase method, 13 parts of nano-carbon fiber with an aspect ratio of 600-800 produced by using propane as a carbon source, and an alkali-free glass fiber with a length of 3mm 28 parts and 0.7 part of gamma-glycidyl etheroxypropyl trimethoxysilane are put into the container and mixed for 5-6min, and then put into 64 parts of phenolic resin produced by hydrochloric acid method and bisphenol A epoxy resin in parts by weight. 8 parts, 4.5 parts of hexamethylenetetramine, 2.6 parts of calcium oxide, 8 parts of decabromodiphenylethane, 3 parts of resorcinol tetraphenyl diphosphate and stearic acid with a mass percentage of 30% Magnesium and 70% by mass of zinc stearate composite mold release agent 1.4 parts, continue to mix for 5-6min, then transfer to the open mill and heat mix for 6-7min, finally pull the tablet, cool and pulverize to get flame retardant Phenolic resin molding material.

Embodiment 3

[0021] First, 47 parts by weight of silica filler produced by the gas phase method, 14 parts of nano-carbon fiber with an aspect ratio of 600-800 produced by using propane as a carbon source, and an alkali-free glass fiber with a length of 3mm 32 parts and 0.8 part of gamma-glycidyl etheroxypropyltrimethoxysilane are put into the container and mixed for 5-6min, then put into 61 parts of phenolic resin produced by hydrochloric acid method and bisphenol A epoxy resin in parts by weight 10 parts, 7.8 parts of hexamethylenetetramine, 1.8 parts of calcium oxide, 7 parts of decabromodiphenylethane, 4 parts of resorcinol tetraphenyl diphosphate and stearic acid with a mass percentage of 30% Magnesium and 1.8 parts of composite release agent composed of zinc stearate with a mass percentage of 70%, continue to mix for 5-6min, then transfer to an open mill and heat mix for 6-7min, and finally pull the tablet, cool and pulverize to obtain flame retardant Phenolic resin molding material. ...

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Abstract

The invention discloses a preparation method of flame-retardant phenolic resin molding material, falling into the technical field of thermosetting molding material preparation. The preparation method comprises the steps of mixing the following materials by weight: 51-55 parts of inorganic filler, 12-16 parts of carbon nano-fiber, 28-32 parts of reinforcing fiber and0.7-1.1 parts of a surface reinforcing agent in a container for 5-6 min; sequentially adding 60-64 parts of phenolic resin, 8-11 parts of epoxy resin, 4.5-7.8 parts of a curing agent, 1.5-2.6 parts of metal oxide, 5-8 parts of flame retardant, 3-5 parts of phosphate and 1.4-2.3 parts of a composite release agent; mixing for 5-6 min; thermally mixing on an open mill for 6-7 min; extruding sheet, cooling and pulverizing, to obtain flame-retardant phenolic resin molding material. The material has high strength, convenient processing, bending strength of 110 MPa, thermal deformation temperature of 240 DEG C, and applicability in airplane manufacturing industry.

Description

technical field [0001] The invention belongs to the technical field of thermosetting molding compound preparation, and in particular relates to a preparation method of a flame-retardant phenolic resin molding material. Background technique [0002] The trend of material development is to continuously improve the special properties of materials to adapt to the requirements of special environmental work. [0003] Phenolic resin has the characteristics of high carbon formation and good temperature resistance, and is used in the aircraft casting industry. However, aircraft casting requires high material strength and good temperature resistance, while ordinary phenolic resin molding materials cannot meet this requirement, so the preparation can be Flame-retardant phenolic resin molding materials that meet this requirement are of positive significance. Contents of the invention [0004] The task of the present invention is to provide a method for preparing a flame-retardant phe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/00
Inventor 方云祥
Owner 常熟东南塑料有限公司