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Cast silicon carbide composite material and preparation method thereof

A technology of composite materials and silicon carbide, applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of poor erosion and wear resistance, long parts supply and maintenance cycle, high installation requirements, etc., to achieve excellent durability Abrasion resistance and chemical corrosion resistance, improved safety and reliability, and reduced production costs

Active Publication Date: 2015-08-12
北京中电联众电力技术集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Alumina ceramics that are often used at present have good wear resistance, corrosion resistance to weak acids, weak alkalis and salts, but due to the high brittleness and low strength of ceramic materials, it is not easy to process into equipment linings with complex shapes and high strength. High-chromium cast iron (steel) has high strength and is easy to process into complex-shaped linings, but its corrosion resistance and wear resistance are far inferior to ceramic materials, and its corrosion resistance and wear resistance are contradictory , the two cannot be taken into account; while the traditional high-density polyethylene and rubber lining materials have certain corrosion resistance, the disadvantage is that the erosion resistance is poor and easy to fall off; commonly used polyurethane materials are resistant to acid and alkali corrosion, but they are not suitable for installation. High requirements and average wear resistance, not suitable for impact wear of large particle materials
[0003] None of the above materials can meet the requirements of various types of equipment for wear resistance, corrosion resistance and mechanical strength at the same time; although the service life of imported special ceramic equipment is long, the price is high, resulting in high operating and production costs, and the cost of parts The supply and maintenance cycle is long, which cannot meet the urgent needs of the majority of users

Method used

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  • Cast silicon carbide composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062]The cast silicon carbide composite material contains the following components in parts by weight:

[0063] 60 parts of silicon carbide 0.5 parts of short glass fiber 1.5 parts of alumina powder

[0064] 0.8 parts of carbon fiber, 30 parts of acrylic resin

[0065] Also contain the additive of following parts by weight:

[0066] Reactive diluent butyl glycidyl ether: 3 parts

[0067] Accelerator DMP-30: 0.45 parts

[0068] Leveling agent Levelling 620: 0.09 parts

[0069] Modifier 651 polyamide: 0.9 parts

[0070] Coupling agent methoxysilane: 0.9 parts

[0071] Curing agent methyl tetrahydrophthalic anhydride: 19.5 parts

[0072] Toughening agent polysulfide rubber: 4.5 parts

[0073] Defoamer BX-841: 0.03 parts

[0074] The ratio of parts by weight of silicon carbide with different particle sizes is as follows:

[0075] 10-20 mesh 0.9 parts

[0076] 20-40 mesh 24 parts

[0077] 40-60 mesh 6 parts

[0078] 100-120 mesh 2.4 parts

[0079] The preparation me...

Embodiment 2

[0103] The cast silicon carbide composite material contains the following components in parts by weight:

[0104] 65 parts of silicon carbide 1.0 parts of short glass fiber 2.5 parts of alumina powder

[0105] 1.2 parts of carbon fiber, 20 parts each of bisphenol-A epoxy resin and bisphenol-F epoxy resin

[0106] Also contain the additive of following parts by weight:

[0107] Inactive diluent ethanol: 6 parts

[0108] Accelerator triethanolamine: 0.12 parts

[0109] Leveling agent BYK-333: 0.28 parts

[0110] Modifier silicon nitride powder: 2 parts

[0111] Coupling agent tetraisopropyl titanate: 2 parts

[0112] Curing agent methyl tetrahydrophthalic anhydride: 30 parts

[0113] Toughening agent polyurethane: 10 parts

[0114] Defoamer BX-841: 0.24 parts

[0115] The ratio of parts by weight of silicon carbide with different particle sizes is as follows:

[0116] 10-20 mesh 1.625 copies

[0117] 20-40 mesh 31.20 parts

[0118] 40-60 mesh 9.75 parts

[0119] 100-...

Embodiment 3

[0122] The cast silicon carbide composite material contains the following components in parts by weight:

[0123] 62 parts of silicon carbide 0.8 parts of short glass fiber 2.0 parts of alumina powder

[0124] 1.0 parts of carbon fiber, 20 parts of phenolic resin, 15 parts of polyurethane

[0125] Also contain the additive of following parts by weight:

[0126] Reactive diluent polypropylene glycol diglycidyl ether: 4.2 parts

[0127] Accelerator 2-methylimidazole: 0.47 parts, AC-2011 0.3 parts

[0128] Leveling agent BYK-333: 0.1 parts, Leveling 620 0.075 parts

[0129] Modifier 651 polyamide: 0.7 silicon nitride powder: 0.7 parts

[0130] Coupling agent chromium chloride methacrylate: 0.7, zirconium aluminate: 0.7 parts

[0131] Curing agent methyl tetrahydrophthalic anhydride: 24.5 parts

[0132] Toughening agent polyurethane: 3.5 parts, silicone modified polyether: 3.5 parts.

[0133] Defoamer BX-841: 0.105 parts

[0134] The ratio of parts by weight of silicon car...

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Abstract

The invention relates to the technical field of composite materials, in particular to a casting silicon carbide composite material and a preparation method thereof. At present, alumina ceramics, high-density polyethylene and rubber lining materials cannot meet the requirements of various equipment for wear resistance, corrosion resistance and mechanical strength at the same time; although the service life of imported special ceramic equipment is long, there are High prices lead to high operating and production costs. The casting silicon carbide composite material of the present invention mainly contains silicon carbide, short glass fibers, alumina powder, carbon fibers, adhesive components and additives. The production process of vacuum casting can manufacture products with various complex shapes. The material has good wear resistance, strong chemical corrosion resistance and high mechanical strength, and is suitable for solid-liquid and solid-gas two-phase medium conveying equipment.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a casting silicon carbide composite material and a preparation method thereof. Background technique [0002] Alumina ceramics that are often used at present have good wear resistance, corrosion resistance to weak acids, weak alkalis and salts, but due to the high brittleness and low strength of ceramic materials, it is not easy to process into equipment linings with complex shapes and high strength. High-chromium cast iron (steel) has high strength and is easy to process into complex-shaped linings, but its corrosion resistance and wear resistance are far inferior to those of ceramic materials, and their corrosion resistance and wear resistance are contradictory , the two cannot be taken into account; while the traditional high-density polyethylene and rubber lining materials have certain corrosion resistance, the disadvantage is that the erosion resistance is poor an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D5/00C09D7/12C04B26/04
Inventor 冯万春
Owner 北京中电联众电力技术集团有限公司