Lightening fire resistant polymer porous membrane laminated composite material and manufacturing method thereof

A technology of high temperature resistant polymers and composite materials, applied in chemical instruments and methods, synthetic resin layered products, lamination, etc. The effect of good thermal insulation performance and low thermal conductivity

Inactive Publication Date: 2007-08-08
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the disadvantage of this foam material is that it has poor...

Method used

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  • Lightening fire resistant polymer porous membrane laminated composite material and manufacturing method thereof
  • Lightening fire resistant polymer porous membrane laminated composite material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The carbon fiber braid is used as the reinforcing material, and the porous polyimide membrane is combined to prepare the porous membrane laminated composite material. The specific steps are as follows:

[0031] 1. Cut the carbon fiber braid into a 20×10cm sheet, clean it with acetone in an ultrasonic wave, and then dry it in an oven until the acetone is completely evaporated.

[0032] 2. the precursor polyamic acid of polyimide is dissolved in the polar organic solvent N, and in N-dimethylacetamide (DMAc) obtains the film-making liquid that mass concentration is 15%; The film-making liquid is filtered , After degassing, scrape a liquid film with a thickness of 100 microns on the stainless steel support; keep the liquid film in the air for a certain period of time and then immerse it in a coagulation bath at 20°C for 10 minutes; soak and clean the cured film with ethanol, and dry it A polyamic acid precursor film with a porous structure was obtained.

[0033] 3. Immerse t...

Embodiment 2

[0039] The glass fiber braid is used as the reinforcing material, and the porous polyimide membrane is compounded to prepare the porous membrane laminated composite material. The specific steps are as follows:

[0040] 1. Cut the glass fiber braid into a 20×10cm sheet, clean it with acetone in an ultrasonic wave, and then dry it in an oven until the acetone is completely evaporated.

[0041] 2. the precursor polyamic acid of polyimide is dissolved in the polar organic solvent N, and in N-dimethylacetamide (DMAc) obtains the film-making liquid that mass concentration is 20%; The film-making liquid is filtered, After degassing, scrape a liquid film with a thickness of 200 microns on the stainless steel support; keep the liquid film in the air for a certain period of time and then immerse it in a coagulation bath at 20°C for 30 minutes; soak and clean the cured film with ethanol, and dry it to obtain Polyamic acid precursor film with porous structure.

[0042] 3. Immerse the cle...

Embodiment 3

[0048] Copper wire mesh is used as a reinforcing material, and the porous polyimide membrane is composited to prepare a porous membrane laminated composite material. The specific steps are as follows:

[0049] 1. Cut the copper wire mesh into a 20×10cm sheet, clean it with acetone in an ultrasonic wave, and then dry it in an oven until the acetone is completely evaporated.

[0050] 2. The precursor polyamide ester of polyimide is dissolved in the polar organic solvent N,N-dimethylacetamide (DMAc) to obtain a film-making solution with a mass concentration of 30%; the film-making solution is filtered , After degassing, scrape a liquid film with a thickness of 400 microns on the stainless steel support body; soak the liquid film in the air for a certain period of time and then immerse it in a coagulation bath at 20°C for 30 minutes; soak and clean the cured film with ethanol or acetone, After drying, a polyamide ester precursor film with a porous structure was obtained.

[0051]...

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Abstract

The invention relates to a light heat resistant polymer porous film layer laminated composite material and its making. It is mainly made of porous polymer thin film and reinforced glass fiber, carbon fiber knitting and metal wire net. It firstly makes the porous polymer thin film through phase inversion or thermal phase separation, combining the glass fiber, carbon knitting fiber and metal wire net thorough dipping or heat pressure to make the single or multi layer laminated composite material. It is easy in process, equipment and realization. The made material is light, heat resistant, high in strength, low heat conductivity, good insulation, flexible, and good in machining.

Description

technical field [0001] The invention relates to a lightweight high-temperature resistant polymer porous membrane laminated composite material and a preparation method thereof, in particular to the preparation of a polymer porous membrane laminated composite material with high temperature resistance, ultra-light weight and heat insulation performance for aviation and aerospace method. Background technique [0002] Polymer porous membrane material is a kind of composite material composed of two phases of polymer and air, in which the air is the dispersed phase and the polymer is the connecting phase. Porous materials have the characteristics of low density and light weight because part of the volume of the polymer is replaced by gas. Since the thermal conductivity of gases is nearly an order of magnitude lower than that of polymers, porous materials have lower thermal conductivity and two major thermal insulation properties relative to nonporous polymers. Porous materials ca...

Claims

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Application Information

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IPC IPC(8): B32B3/12B32B27/06B32B27/04B32B15/02B32B3/24B32B37/15B32B38/08B32B38/16B32B38/18B32B37/06B29D7/01C08L79/08C08L71/00C08L81/00
Inventor 杜春慧朱宝库徐又一
Owner ZHEJIANG UNIV
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