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Fire-retarding reinforced silicon carbide fiber and preparation method thereof

A silicon carbide fiber and refractory technology, applied in the field of materials, can solve the problems of limited refractory performance and achieve good refractoriness and mechanical strength, excellent comprehensive performance and high toughness

Inactive Publication Date: 2019-08-13
宁波众兴新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Silicon carbide fiber can also be used as a fire-resistant material, but its fire-resistant performance is limited. How to blend it with organic flame-retardant fillers to achieve synergistic flame-retardant and improve fire-resistant performance is the focus of current research

Method used

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preparation example Construction

[0028] The preparation method of described tackifier, comprises the following steps:

[0029] (1) Take palm wax, add it to 7 times its weight in absolute ethanol, keep stirring at 60°C for 30 minutes to obtain an ethanol solution;

[0030] (2) Take aluminum dihydrogen phosphate, add it to deionized water 20 times its weight, and keep stirring at 70°C for 10 minutes to obtain a water dispersion;

[0031] (3) Mix the above ethanol solution and water dispersion, stir evenly, add silane coupling agent kh550, and ultrasonically for 1 hour to obtain amino emulsion;

[0032] (4) Mix phenol and 37% formaldehyde, stir evenly, put it into a water bath at 85°C, add sodium hydroxide, keep stirring for 3 hours, add it to the above amino emulsion, reduce the temperature of the water bath to 60°C, keep stirring After 1 hour, the material was discharged and dehydrated under reduced pressure to obtain the tackifier.

[0033] A method for preparing refractory reinforced silicon carbide fibers...

Embodiment 2

[0040] A fire-resistant reinforced silicon carbide fiber, comprising the following raw materials in parts by weight:

[0041] Orthoethyl silicate 40, silicon carbide fiber 140, chlorinated paraffin 6, calcium stearate 2, methyl methacrylate 20, lithium methoxide 0.1, zirconium oxychloride octahydrate 20, tackifier 7, epoxypropylene Alcohol 2.

[0042] Described tackifier is made up of the raw material of following weight part:

[0043] Palm wax 6, aluminum dihydrogen phosphate 5, phenol 20, 37% formaldehyde 40, sodium hydroxide 2, silane coupling agent kh550 2.

[0044] The preparation method of described tackifier, comprises the following steps:

[0045] (1) Take palm wax, add it to absolute ethanol which is 9 times its weight, and keep stirring at 65°C for 40 minutes to obtain an ethanol solution;

[0046] (2) Take aluminum dihydrogen phosphate, add it to 24 times its weight in deionized water, and keep stirring at 75°C for 20 minutes to obtain a water dispersion;

[004...

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Abstract

The invention discloses a fire-retarding reinforced silicon carbide fiber. The fire-retarding reinforced silicon carbide fiber is composed of, by weight part, 36-40 parts of tetraethoxysilane, 120-140parts of silicon carbide fiber, 4-6 parts of chlorinated paraffin, 1-2 parts of calcium stearate, 13-20 parts of methyl methacrylate, 0.04-0.1 part of lithium methoxide, 18-20 parts of barium hydroxide ocatahydrate, 5-7 parts of tackifier and 1-2 parts of glycidol. The fire-retarding reinforced silicon carbide fiber is high in fire resistance, mechanical performance and tenacity and excellent incomprehensive performance.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a refractory reinforced silicon carbide fiber and a preparation method thereof. Background technique [0002] Silicon carbide fiber is an inorganic fiber with β-silicon carbide structure made from organosilicon compound by spinning, carbonization or vapor deposition. It belongs to ceramic fiber. The strength and oxidation resistance are better than carbon fiber, the strength reaches 1960-4410MPa, the strength retention rate is above 80% at the highest service temperature, the modulus is 176.4-294GPa, and the chemical stability is also good. [0003] Silicon carbide fibers are mainly used as high temperature resistant materials and reinforcing materials. High temperature resistant materials include heat shielding materials, high temperature resistant conveyor belts, filter cloths for filtering high temperature gases or molten metals, etc. When used as a reinforcing material, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/10D01F1/07
CPCD01F1/07D01F9/10
Inventor 田仕昂
Owner 宁波众兴新材料科技有限公司
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