ISSN:
1662-8985
Quelle:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Thema:
Maschinenbau
Notizen:
BT resins composed of 4,4’-bismaleimidodiphenylmethane (BMI) and2,2’-bis-(4-cyanatophenyl)propane (BCE) were modified by octa(maleimidophenyl) silsesquioxane(OMPS). It was found that the curing reaction of BCE were accelerated by OMPS, and the onsettemperature of the cyclotrimerization was reduced up to 95.5°C (by DSC). As demonstrated by DSCand FT-IR, there was no evidence indicated the co-reaction between maleimide and cyanate ester.2,2’-diallyl bisphenol A (DBA) and diglycidyl ether of bisphenol A (E-51) were also used to enhancethe toughness of BT resins, and the formulated BTA and BTE resins were obtained. The results ofDMA and TG show that the BT, BTA, and BTE resins containing 1wt% of OMPS exhibit enhancedthermal properties in comparison with pristine BT0, BTA0, and BTE0 resins, while more content ofOMPS may impair the polymer matrix, though the effect of OMPS was slight. The dielectric constantof these hybrid materials were reduced by incorporation of OMPS, while overmuch contents ofOMPS were disadvantageous for dielectric constant due to the aggregation of OMPS
Materialart:
Digitale Medien
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/41/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.47-50.1161.pdf
Permalink