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Modified of rice of accept of epoxy resin heat-resisting (2)
From;    Author:Stand originally
Polymer of modified of accept rice particle will become those who increase polymer hear resistance method. Accept rice material is added in polymer, can make polymer increases, add pliable but strong, vitrification temperature rises. Introduce, carry certain kind, make accept rice particle and argillaceous particle dispersive in epoxy resin matrix, can make the vitrification temperature of epoxy resin rises substantially, can raise 50 ℃ at most.

3, result and discuss

1, the influence of accept rice grain to colophony vitrification temperature

High polymer polymer can happen in be heated process a series of physical change and chemical change, look from apparent, once bate, melt or pyrolysis happen after polymer material be heated, think it was lost namely practical. Accordingly, often regard Tg, Tm the upper limit temperature of polymer of the condition that be not brilliant and stability of crystallization polymer dimension respectively. The rice of accept of preparation of accept rice particle that uses 3 kinds to differ respectively composite material, check its vitrification temperature (result rank is expressed 1 in) , study particle of different accept rice is right the influence rule of epoxy resin hear resistance.

Join by what express particle of rice of 1 visible accept, all make vitrification temperature of the system elevatory. To system of SiO2/ epoxy resin, of accept rice particle join make vitrification temperature raises 14 ~ 36 ℃ , it is in SiO2 quality mark 3% when, vitrification temperature is highest (126.65 ℃ ) ; To system of TiO2/ epoxy resin, of accept rice particle join make vitrification temperature raises 36 ~ 40 ℃ , 2 ~ are in TiO2 quality mark 3% when, vitrification temperature is highest (130.48 ℃ ) ; To α - system of A12O3/ epoxy resin, of accept rice particle join make vitrification temperature raises 41 ~ 48 ℃ , in α - A12O3, quality mark is 2% when, vitrification temperature is highest (137.97 ℃ ) .


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