Decomposition characteristics of blowing agent H in EPDM compound |
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DOI: |
Key Words: EPDM;blowing agent;decomposition temperature;gas evolution |
Author Name | Affiliation | PENG Zong-lin | Shanghai Jiaotong University | WANG Jun | Shanghai Jiaotong University | ZHANG Xiang-fu | Shanghai Jiaotong University | ZHANG Yin-xi | Shanghai Jiaotong University |
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Abstract: |
The decomposition temperature(Td),gas evolution and decomposition rate of blowing agents,especial blowing agent H(dinit roso pentamethylene-tet ramine)in EPDM compounds were investigated.The results showed that in cont rast with those of the inorg anic blowing agent s(sodium bicarbonate and ammonium bicarbonate),the decomposition temperatures of organic blowing agents(AC,H and OBSH)in EPDM compound were lower than those in atmosphere;different brands of EPDM didnt show remarkable effect on the thermal decomposition of blowing agent H;the decomposition temperature of blowing agent H decreased to 134℃ in the presence of zinc oxide and stearic acid;and the decomposition of blowing agent H started earlier and the gas evolution increased at elevated temperature. |
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