High-elasticity anti-shock polyimide foamed material and preparation method thereof

A technology of polyimide and foam materials, applied in the field of foam materials, can solve the problems of low shock resistance, high production cost of polyimide foam materials, poor resilience, etc., and achieve uniform cells and good heat insulation effect , Increase the effect of flame retardant performance

Inactive Publication Date: 2017-01-04
瑞安市智造科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyimide foam not only has the characteristics of light weight and low density, but also has incomparable heat resistance, flame retardancy and dimensional stability of polyurethane foam, polyethylene foam and polystyrene foam. It has attracted great attention from the aerospace industry and has been used as heat and sound insulation materials for various aircraft. However, polyimide foam materials have high production costs, poor resilience, and low shock resistance, which limit the use of polyimide foam materials. Applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A highly elastic anti-shock polyimide foam material, prepared from the following raw materials in parts by weight (kg): benzophenone tetracarboxylic dianhydride 60, methanol 60, malondialdehyde 40, fatty alcohol polyoxyethylene ether sodium sulfate 12. Triethylamine 6, n-pentane 7, dibasic lead stearate 3, 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester 8, didodecyl alcohol ester 5 , phenyltriethoxysilane 6, epoxy soybean oil 4, dibromoneopentyl glycol 4, ceramsite sand 20, fluff powder 10, hollow silica nanosphere 5, pyrolysis waste rubber powder 4, Expanded graphite 4, hydrotalcite 3, jute fiber 5, molybdenum disulfide 2.

[0016] A kind of preparation method of high elasticity shockproof polyimide foam material, comprises the following steps:

[0017] (1) Add benzophenone tetracarboxylic dianhydride into the reactor and mix with methanol, heat to 50-60°C for esterification reaction, and then add malondialdehyde to obtain the polyesteramide ester prepolym...

Embodiment 2

[0022] A highly elastic anti-shock polyimide foam material, prepared from the following raw materials in parts by weight (kg): benzophenone tetracarboxylic dianhydride 70, methanol 65, malondialdehyde 45, fatty alcohol polyoxyethylene ether sodium sulfate 13. Triethylamine 7, n-pentane 8, dibasic lead stearate 3.5, 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester 9, didodecyl alcohol ester 6 , phenyltriethoxysilane 7.5, epoxy soybean oil 5, dibromoneopentyl glycol 4.5, ceramsite sand 22.5, fluff powder 11, hollow silica nanosphere 6, pyrolysis waste rubber powder 4.5, Expanded graphite 5, hydrotalcite 4, jute fiber 6.5, molybdenum disulfide 3.

[0023] The preparation method is the same as in Example 1.

Embodiment 3

[0025] A highly elastic anti-shock polyimide foam material, prepared from the following raw materials in parts by weight (kg): benzophenone tetracarboxylic dianhydride 80, methanol 70, malondialdehyde 50, fatty alcohol polyoxyethylene ether sodium sulfate 14. Triethylamine 8, n-pentane 9, dibasic lead stearate 4, 4,5-epoxycyclohexane-1,2-dicarboxylic acid diglycidyl ester 10, didodecyl alcohol ester 7 , phenyltriethoxysilane 9, epoxy soybean oil 6, dibromoneopentyl glycol 5, ceramsite sand 25, fluff powder 12, hollow silica nanosphere 7, pyrolysis waste rubber powder 5, Expanded graphite 6, hydrotalcite 5, jute fiber 8, molybdenum disulfide 4.

[0026] The preparation method is the same as in Example 1.

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PUM

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Abstract

The invention discloses a high-elasticity anti-shock polyimide foamed material and a preparation method thereof. The material is prepared from, by weight, 60-80 parts of benzophenone tetracarboxylic dianhydride, 60-70 parts of methyl alcohol, 40-50 parts of malondialdehyde, 12-14 parts of fatty alcohol-polyoxyethylene ether sodium sulfate, 6-8 parts of triethylamine, 7-9 parts of n-pentane, 3-4 parts of dibasic lead stearate, 8-10 parts of 4,5-cyclohexene oxide-1,2-diformic diglycidyl ester, 5-7 parts of didodecyl carbon alcohol ester, 6-9 parts of phenyl triethoxy silane, 4-6 parts of epoxidized soybean oil, 4-5 parts of dibromoneopentyl glycol, 20-25 parts of ceramsite sand, 10-12 parts of tomentum powder, 5-7 parts of hollow silicon dioxide nanospheres, 4-5 parts of pyrolysis waste rubber powder, 4-6 parts of expanded graphite, 3-5 parts of hydrotalcite, 5-8 parts of jute fibers and 2-4 parts of molybdenum disulfide. The added 4,5-cyclohexene oxide-1,2-diformic diglycidyl ester has high rebound resilience, torsion stress and toughness, and foam has good shock resistance and buffer performance after the 4,5-cyclohexene oxide-1,2-diformic diglycidyl ester is combined with the added hollow silicon dioxide nanospheres, tomentum powder and the like; the added expanded graphite and hydrotalcite are compounded in use, so that the flame retardant property of the material is enhanced.

Description

technical field [0001] The invention relates to a foam material, in particular to a high-elastic shock-resistant polyimide foam material and a preparation method thereof. Background technique [0002] Polyimide is a kind of heat-resistant polymer material with excellent comprehensive performance. It not only has high thermal performance, mechanical performance and chemical stability, but also has low dielectric constant and thermal expansion coefficient. Polyimide foam not only has the characteristics of light weight and low density, but also has incomparable heat resistance, flame retardancy and dimensional stability of polyurethane foam, polyethylene foam and polystyrene foam. It has attracted great attention from the aerospace industry and has been used as heat and sound insulation materials for various aircraft. However, polyimide foam materials have high production costs, poor resilience, and low shock resistance, which limit the use of polyimide foam materials. Applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L1/02C08L91/00C08L71/02C08K13/04C08K7/24C08K7/26C08K3/26C08G73/10C08J9/14
CPCC08L79/08C08G73/1003C08J9/141C08J2203/14C08J2379/08C08J2401/02C08K2201/011C08L2201/02C08L2203/14C08L2205/035C08L2205/16C08L1/02C08L91/00C08L71/02C08K13/04C08K7/24C08K7/26C08K3/26
Inventor 任新年
Owner 瑞安市智造科技有限公司
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