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

CN102863737BActive Publication Date: 2014-03-05山东天茂新材料科技股份有限公司

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner: 山东天茂新材料科技股份有限公司
Publication Date: 2014-03-05

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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.

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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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