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Epoxy resin-silicon carbide wear-resistant flame-retardant composite material and preparation method thereof

A flame-retardant composite material and epoxy resin technology, which is applied in the field of composite materials, can solve the problems of uneven blending of flame retardants and epoxy resin matrix, easy leakage of flame retardant salts, and pollution of the material use environment. Achieve excellent chemical and physical mechanical properties, excellent flame retardancy, and avoid agglomeration

Pending Publication Date: 2021-06-01
PINGDINGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By adding silicon carbide fillers that have been surface-modified and bonded with flame retardants to the epoxy resin, the uneven blending of the existing flame retardants and the epoxy resin matrix and the ease of flame retardant salts in the composite materials are solved. The problem of leakage and pollution of the environment where materials are used

Method used

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  • Epoxy resin-silicon carbide wear-resistant flame-retardant composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] An epoxy resin-silicon carbide wear-resistant and flame-retardant composite material provided by the present invention includes modified silicon carbide and E-51 bisphenol A epoxy resin, the modified silicon carbide is dispersed in the epoxy resin, Its addition amount is 10wt.% of epoxy resin. The modified silicon carbide is surface-modified silicon carbide with KH-570 silane coupling agent, grafted with glycidyl methacrylate and bonded with melamine cyanurate flame retardant, and its particle size is about at 8 μm.

[0028] The preparation method of the epoxy resin-silicon carbide wear-resistant and flame-retardant composite material comprises the following steps:

[0029] (1) Preparation of silicon carbide grafted with glycidyl methacrylate on the surface:

[0030]a. Add 10g of silicon carbide and 10% hydrofluoric acid into a three-necked flask in turn, stir at room temperature for 20 minutes to obtain an acidified silicon carbide mixed solution, repeatedly wash and...

Embodiment 2

[0038] The difference between this embodiment and Embodiment 1 is that further, the amount of silicon carbide added is reduced to 5.0wt.% of the epoxy resin. The modified silicon carbide is surface-modified silicon carbide with KH-570 silane coupling agent, grafted with glycidyl methacrylate and bonded with melamine cyanurate flame retardant, and its particle size is about at 8 μm.

[0039] The preparation method of the epoxy resin-silicon carbide wear-resistant and flame-retardant composite material comprises the following steps:

[0040] (1) Preparation of silicon carbide grafted with glycidyl methacrylate on the surface:

[0041] a. Add 10g of silicon carbide and 10% hydrofluoric acid into a three-necked flask in turn, stir at room temperature for 20 minutes to obtain an acidified silicon carbide mixed solution, repeatedly wash and filter the silicon carbide with distilled water until it is neutral, and dry it in vacuum for 24 hours ;

[0042] b. Add 5g of silicon carbid...

Embodiment 3

[0049] An epoxy resin-silicon carbide wear-resistant and flame-retardant composite material, comprising modified silicon carbide and E-51 bisphenol A epoxy resin, the modified silicon carbide is dispersed in the epoxy resin, and its addition amount is 12wt.% of epoxy resin. The modified silicon carbide is surface-modified silicon carbide with KH-570 silane coupling agent, grafted with glycidyl methacrylate and bonded with melamine cyanurate flame retardant, and its particle size is about at 8 μm.

[0050] The preparation method of the epoxy resin-silicon carbide wear-resistant and flame-retardant composite material comprises the following steps:

[0051] (1) Preparation of silicon carbide grafted with glycidyl methacrylate on the surface:

[0052] a. Add 10g of silicon carbide and 10% hydrofluoric acid into a three-necked flask in turn, stir at room temperature for 20 minutes to obtain an acidified silicon carbide mixed solution, repeatedly wash and filter the silicon carbid...

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Abstract

The invention relates to an epoxy resin-silicon carbide wear-resistant flame-retardant composite material and a preparation method thereof. According to the epoxy resin-silicon carbide wear-resistant flame-retardant composite material, silicon carbide which is subjected to surface modification, grafted with glycidyl methacrylate and bonded with a melamine salt flame retardant is dispersed in epoxy resin, and the addition amount of the silicon carbide with the surface modified with the flame retardant is 1-12 wt.% of the epoxy resin. The preparation method of the composite material comprises the following steps: carrying out surface modification grafting on silicon carbide, and bonding a flame retardant to the surface of the silicon carbide through a ring-opening reaction; dispersing the prepared silicon carbide particles of which the surfaces are modified with the flame retardant into epoxy resin to form an epoxy resin-silicon carbide uniform dispersion system; and adding a curing agent for epoxy resin curing treatment. The epoxy resin-silicon carbide wear-resistant flame-retardant composite material provided by the invention has excellent flame retardance, wear resistance and mechanical properties, and the preparation method is simple, mild in reaction condition and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a composite material, in particular to an epoxy resin-silicon carbide wear-resistant and flame-retardant composite material and a preparation method thereof. Background technique [0002] Epoxy resin is widely used in plastic industry, electrical materials, electronic packaging materials, chemical equipment and many other fields because of its excellent performance. However, the cured product has poor toughness, poor impact resistance, and is easy to crack, especially the defects of poor flammability and wear resistance have affected the further extensive application of epoxy resin. During the use of special equipment such as oil production pipelines in oil and gas fields, coal mine slime pipelines, and chemical material pipelines, epoxy resins with special properties are expected to be widely used in key parts such as lining coatings and sealing interfaces. Therefore, epoxy resin is expected to have excellent flame retardancy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K9/06C08K9/04C08K9/02C08K3/34
CPCC08K9/06C08K9/04C08K9/02C08K3/34C08L2201/02C08K2201/005C08L63/00
Inventor 施雪军杜祥祥曹可生任爽马爽韩永军
Owner PINGDINGSHAN UNIVERSITY
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