Hollow glass bead composite phthalonitrile resin rigid foam and preparation method thereof

A technology of phthalonitrile resin and hollow glass microspheres, which is applied in the field of composite materials, can solve the problems of slow curing rate of aromatic amine curing agent, etc., and achieve the effect of good flame retardancy

Inactive Publication Date: 2020-04-07
GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patent (US5895726) reported that metal foam was impregnated with phthalonitrile prepolymer, and after curing, a lightweight and highly damped porous metal phthalonitrile composite material was formed. The prepared material has excellent acoustic damping, structural properties, oxidation Stability and flame retardancy, but the curing rate of the aromatic amine curing agent used is still very slow

Method used

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  • Hollow glass bead composite phthalonitrile resin rigid foam and preparation method thereof
  • Hollow glass bead composite phthalonitrile resin rigid foam and preparation method thereof
  • Hollow glass bead composite phthalonitrile resin rigid foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The formula of a kind of hollow glass microsphere composite phthalonitrile resin rigid foam provided by the present embodiment is as follows:

[0057] 1,2,3,6-tetrahydrophthalic anhydride type capped imide monomer 268g Resorcinol type bisphthalonitrile monomer 484g Hollow glass microspheres (GS20, true density 0.18~0.22g / cm 3 )

188g Silane coupling agent KH550 23g Ethanol (recyclable for continued use) 1533g

[0058] Wherein, the structural formula of 1,2,3,6-tetrahydrophthalic anhydride type capped imide monomer is as follows:

[0059]

[0060] The structural formula of the resorcinol type diphthalonitrile monomer is as follows:

[0061]

[0062] The preparation method of above-mentioned rigid foam is:

[0063] S1) The 1,2,3,6-tetrahydrophthalic anhydride-type end-capped imide monomer powder and the resorcinol-type diphthalonitrile monomer powder were respectively pulverized, ground, sampled, and blended uniformly, and t...

Embodiment 2

[0070] The formula of a kind of hollow glass microsphere composite phthalonitrile resin rigid foam provided by the present embodiment is as follows:

[0071] 1,2,3,6-tetrahydrophthalic anhydride type capped imide monomer 268g Resorcinol type bisphthalonitrile monomer 484g Hollow glass microspheres (GS15, true density 0.13~0.17g / cm 3 )

188g Silane coupling agent KH550 23g Ethanol (recyclable for continued use) 1533g

[0072] The preparation method of the above-mentioned rigid foam is basically the same as that of Example 1, so it will not be repeated one by one.

[0073] The hollow glass microsphere composite imide phthalonitrile rigid foam prepared in this example is black in appearance, dense, and has a density of 0.35g / cm 3 , the thermal conductivity is 0.06W / (m K), the limiting oxygen index is 38%, there is no droplet, the flame retardant performance is V-0 level, there is no glass transition temperature observed within 400°C, and t...

Embodiment 3

[0075] The formula of a kind of hollow glass microsphere composite phthalonitrile resin rigid foam provided by the present embodiment is as follows:

[0076] 1,2,3,6-tetrahydrophthalic anhydride type capped imide monomer 105g Hexahydrophthalic anhydride type blocked siloxane imide monomer 117g Phloroglucinol type diphthalonitrile monomer 530g Hexaphenoxycyclotriphosphazene 37.6g Hollow glass microspheres (GS20, true density 0.18~0.22g / cm 3 ))

188g Silane coupling agent KH550 23g Ethanol (recyclable for continued use) 1533g

[0077] Wherein, the structural formula of 1,2,3,6-tetrahydrophthalic anhydride type capped imide monomer is as follows:

[0078]

[0079] The structural formula of the hexahydrophthalic anhydride type end-capped siloxane imide monomer is as follows:

[0080]

[0081] The structural formula of the phloroglucinol type bis-phthalonitrile monomer is as follows:

[0082]

[0083] The structural for...

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Abstract

The invention relates to the technical field of composite materials, and discloses hollow glass bead composite phthalonitrile resin rigid foam which comprises hollow glass beads, six-membered alicyclic imide and bisphthalonitrile, wherein the molar ratio of the six-membered alicyclic imide to the bisphthalonitrile is 1: 4 to 1: 1; wherein the mass ratio of the hollow glass beads to the mixture ofthe six-membered alicyclic imide and the bisphthalonitrile is 1: 0.4-1: 7.6. The invention also discloses a preparation method of the rigid foam. The hollow glass bead composite phthalonitrile resin rigid foam does not adopt an organic solvent for foaming, does not drop slag, has good flame retardance, can be used as a light, high-strength, high-temperature-resistant, green and flame-retardant interlayer component, and is wide in application.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a hollow glass microsphere composite phthalonitrile resin rigid foam and a preparation method thereof. Background technique [0002] The safe and efficient operation of high-end equipment such as aerospace vehicles, ships, and deep submersibles puts forward new and higher requirements for miniaturization, light weight, and high reliability. Combustible, high-strength and high-temperature-resistant composite materials for protection, especially structural foam materials used as sandwich layers of various composite materials. [0003] At present, the high-temperature resistant structural foams mainly used at home and abroad mainly include silicone sponge, polyurethane foam, unsaturated polyester foam, phenolic resin foam, double horse (BMI) foam, polymethacrylimide (PMI) foam, etc. Most of the foaming of these products is based on chemical methods, which require the us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L85/02C08L79/04C08K9/06C08K7/28C08G73/06C08G79/025C08J9/00
CPCC08J9/009C08G79/025C08G73/06C08J2385/02C08J2379/04C08J2205/10
Inventor 袁萍吴菊英何韧邢涛范敬辉邱勇黄渝鸿
Owner GENERAL ENG RES INST CHINA ACAD OF ENG PHYSICS
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