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Preparation method of halogen-free flame-retardant epoxy-resin-modified phenolic FRP material

A technology of epoxy resin and glass fiber reinforced plastics, which is applied in the field of preparation of phenolic glass fiber reinforced plastic materials, can solve the problems of unsatisfactory flame retardancy of phenolic resin materials, and achieve the effect of good strength, excellent flame retardancy and heat resistance

Active Publication Date: 2014-03-05
山东天茂新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Phenolic FRP has good strength and weather resistance, while epoxy resin has good encapsulation and adhesion. However, due to the unsatisfactory flame retardancy of phenolic resin materials, its application in high-end products is limited.

Method used

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  • Preparation method of halogen-free flame-retardant epoxy-resin-modified phenolic FRP material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 72 parts of calcium carbonate taken by weight, 14 parts of silicon dioxide produced by gas phase method, 1.1 parts of N-beta-(aminoethyl)-gamma-aminopropylmethyldimethoxysilane and a length of 3mm Put 42 parts of glass fiber into a container with a stirring device and mix well, then put in 76 parts of phenolic resin produced by acid method (hydrochloric acid catalyzed method) and phenolic epoxy resin, that is, phenolic resin and 8 parts of epichlorohydrin condensate, 6 parts of hexamethylenetetramine, 1 part of calcium oxide, 10 parts of polyester epoxy resin, 2.5 parts of zinc stearate and 8 parts of melamine urate, continue to mix Evenly, then transferred to the mill for hot mixing and kneading for 5-6 minutes, finally pulled, cooled and crushed to obtain a halogen-free flame-retardant epoxy resin modified phenolic glass fiber reinforced plastic material.

Embodiment 2

[0018] 76 parts of calcium carbonate taken by weight, 12 parts of silicon dioxide produced by gas phase method, 0.9 part of N-beta-(aminoethyl)-gamma-aminopropylmethyldimethoxysilane and a length of 3mm Put 45 parts of glass fiber into a container with a stirring device and mix well, then put in 80 parts of phenolic resin produced by acid method (hydrochloric acid catalyzed method) and phenolic epoxy resin, that is, phenolic resin and Condensate 6 parts of epichlorohydrin, 4 parts of hexamethylenetetramine, 1.8 parts of calcium oxide, 14 parts of polyester epoxy resin, 2.7 parts of zinc stearate and 10 parts of melamine polyphosphate, continue to mix Evenly, then transferred to the mill for hot mixing and kneading for 5-6 minutes, finally pulled, cooled and crushed to obtain a halogen-free flame-retardant epoxy resin modified phenolic glass fiber reinforced plastic material.

Embodiment 3

[0020] 73 parts of calcium carbonate taken by weight, 18 parts of silicon dioxide produced by gas phase method, 1.3 parts of N-beta-(aminoethyl)-gamma-aminopropylmethyldimethoxysilane and a length of 3mm Put 43 parts of glass fiber into a container with a stirring device and mix well, then put in 77 parts of phenolic resin produced by acid method (hydrochloric acid catalyzed method) and phenolic epoxy resin, that is, phenolic resin and Condensate 6.5 parts of epichlorohydrin, 5 parts of hexamethylenetetramine, 2 parts of calcium oxide, 11 parts of polyester epoxy resin, 3 parts of zinc stearate and 9 parts of melamine urate, continue to mix Evenly, then transferred to the mill for hot mixing and kneading for 5-6 minutes, finally pulled, cooled and crushed to obtain a halogen-free flame-retardant epoxy resin modified phenolic glass fiber reinforced plastic material.

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Abstract

The invention relates to a preparation method of a halogen-free flame-retardant epoxy-resin-modified phenolic FRP material, belonging to the technical field of thermosetting molding compound preparation. The preparation method comprises the following steps: weighing 72-76 parts of mineral filler, 12-18 parts of silicon dioxide, 42-45 parts of reinforcing fiber and 0.9-1.4 parts of reinforcer; adding the materials in a container provided with a stirring device, mixing, adding 76-80 parts of phenolic FRP, 6-8 parts of novolac epoxy resin, 4-7 parts of curing agent, 1-2 parts of metal oxide, 8-14 parts of epoxy resin, 2.0-3.0 parts of releasing agent and 8-12 parts of flame retardant, and evenly mixing; transferring the mixture onto a open mill, and carrying out hot mixing for 5-6 minutes; and finally, drawing to obtain sheets, cooling, and pulverizing to obtain the halogen-free flame-retardant epoxy-resin-modified phenolic FRP material. The halogen-free flame-retardant epoxy-resin-modified phenolic FRP material has the advantages of excellent flame retardancy, excellent heat resistance, high strength and ideal bonding property, and is convenient for molding. The test proves that the bending strength is 88 MPa, the heat-deformation temperature is 240 DEG C, and the flame retardancy reaches Grade V-0.

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 halogen-free flame-retardant epoxy resin modified phenolic glass fiber reinforced plastic material. Background technique [0002] Phenolic FRP has good strength and weather resistance, while epoxy resin has good encapsulation and adhesion. However, due to the unsatisfactory flame retardancy of phenolic resin materials, its application in high-end products is limited. In view of this, it is of positive significance to develop phenolic FRP materials with flame-retardant effects. Contents of the invention [0003] The task of the present invention is to provide a preparation method of a halogen-free flame-retardant epoxy resin-modified phenolic glass fiber reinforced plastic material which has both excellent flame retardancy and good cohesiveness so as to expand the application area. [0004] The object of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L61/06C08L63/00C08K13/04C08K7/14C08K3/36C08K3/22C08K3/26C08K5/098C08K5/3492C08K5/544
Inventor 方云祥
Owner 山东天茂新材料科技股份有限公司
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