Citation: ZHU Wenjiang, ZHANG Chongli, HUANG Zhitang. BICYCLO[2. 2. 1] HEPT-5-ENE-2,3-DICARBOXYLIC ANHYDRIDE CAPPED 'PMR' TYPE POLYAMIDE-IMIDE*[J]. Chinese Journal of Polymer Science, ;1986, 4(1): 17-23. shu

BICYCLO[2. 2. 1] HEPT-5-ENE-2,3-DICARBOXYLIC ANHYDRIDE CAPPED 'PMR' TYPE POLYAMIDE-IMIDE*

Received Date: 27 May 1984

The resin solution of NA capped‘PMR' type polyamide-imide was prepared from bicyclo [2.2.1]-hept-5-ene-2, 3-dicarboxylic acid ethyl ester,1, 2, 4-trimellitic acid-2-(or-1-) ethyl ester and 4,4'-methylenedianiline in ethanol. This resin solution is specially suitable for the preparation of compo-sites. The fiexural strength of the glass cloth reinforced plastics was 6000--7000 kg/cm2 (RM) and4000--kg/cm2 (260°--300℃), respectively. The result of isothermal aging for 800 hours in-dicated that this composite can be used at 260℃.The mechanism of the formation of polyamideimide was discussed by using appropriate model compounds.
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