Polyimide foam composite material

A composite material and polyimide technology, applied in the field of polyimide foam composite materials, can solve the problems of large usage, lightweight design obstacles, high density of thermal insulation materials, etc., and achieve improved speed, convenient construction, and thermal insulation. Good results

Active Publication Date: 2014-04-02
QINGDAO ADVANCED MARINE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary insulation materials are dense and used in large quantities, which is an obstacle to lightweight design

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A polyimide foam composite material preparation process adopts a one-step molding process:

[0015] Add 40 parts of polyamic acid, 0.05 parts of graphene sheets, 0.05 parts of carbon nanofibers, 0.05 parts of vitrified microbeads, 5 parts of foaming agent water, and 20 parts of silicone oil into the reaction kettle, set the temperature at 160°C, and slowly Stir at high speed for 10 minutes, and then stir quickly for 8 minutes to make it even, then add it to the required mold to get it.

Embodiment 2

[0017] Add 70 parts of polyamic acid, 10 parts of graphene sheets, 0.05 parts of carbon nanofibers, 0.03 parts of vitrified microbeads, 5 parts of foaming agent water, and 40 parts of silicone oil into the reaction kettle, set the temperature at 180°C, and slowly Stir at high speed for 10 minutes, and then stir quickly for 8 minutes to make it even, then add it to the required mold to get it.

Embodiment 3

[0019] Add 55 parts of polyamic acid, 5 parts of graphene sheets, 3 parts of carbon nanofibers, 0.04 parts of vitrified microbeads, 8 parts of foaming agent water, and 30 parts of silicone oil into the reaction kettle, set the temperature at 160°C, and slowly Stir at high speed for 10 minutes, and then stir quickly for 8 minutes to make it even, then add it to the required mold to get it.

[0020] The density of the polyimide foam composite material gained in the present invention is 20-50g / cm 3 , the temperature interval span of damping coefficient ≥0.3 is 250°C.

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Abstract

The invention discloses a polyimide foam composite material which is characterized in that raw materials of the polyimide foam composite material comprise glass beads and graphene sheets. The density of the material is 20-50g/cm<3>, the temperature range span with the damping coefficient of more than or equal to 0.3 is 250 DEG C, the polyimide foam composite material is a novel high-efficiency acoustic and heat insulation light material which is low in density, high in heat insulation property, safe and reliable to use and convenient in construction, and the application defects and potential safety hazard of existing materials are overcome. According to the polyimide high-efficiency acoustic and heat insulation light material, the operating safety of ships and naval vessels, aircrafts and high speed trains is improved, and the effect of lightening the weight is achieved, so that the navigational speed is improved, the fuel is saved, and the carrying capacity is improved.

Description

technical field [0001] The present invention relates to polyimide foam composite materials. Background technique [0002] A large amount of heat-insulating and sound-absorbing materials are needed in the manufacture of ships, aerospace, and high-speed trains. At present, the mineral fiber-based heat-insulating and sound-absorbing materials represented by ultra-fine glass wool have high density, brittleness, and serious water absorption. , easy to vibrate and sag and other defects, and in the construction project, due to the brittleness of fibers, it is easy to form dust to escape and pollute the environment and cause lung diseases; ordinary organic foams have poor flame retardancy, high combustion smoke density and release a large amount of toxic and harmful gases. [0003] At the same time, the lightweight of ships, aircraft, and high-speed trains can greatly increase the payload, improve the operating speed and long-distance voyage capability. Ordinary insulation material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K13/04C08K7/06C08K3/04C08K7/20C08J9/04C08G73/10
CPCC08J9/0061C08J9/08C08J2203/10C08J2379/08C08J2383/04C08K2201/011C08L79/08C08L83/04C08K7/00C08K3/04C08K7/06C08K7/20
Inventor 刘连河魏浩韩世辉王强
Owner QINGDAO ADVANCED MARINE MATERIAL TECH
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