热处理温度对炭黑补强性能的影响

Effect of Heat Treatment Temperature on Reinforcing Property of Carbon Black

通过在不同温度下分别对4种炭黑进行热处理,研究热处理炭黑对结合橡胶质量分数和表面官能团含量的影响。结果表明:炭黑N330和N550经400℃热处理后表面官能团脱落,600℃处理后再次结合;炭黑DZ13经200℃热处理后表面官能团脱落,400℃处理后再次结合;炭黑DZ20经200℃热处理后表面官能团结合,600℃处理后再次脱落。炭黑DZ20的补强性能主要受内酯基的影响,而炭黑N330,N550和DZ13的补强性能主要受酚羟基的影响。

Four types of carbon black were treated under different temperatures,the effect of heat treatment of carbon black on the bound rubber content of carbon black/NR compound and content of surface functional groups was investigated. The results showed that, the debonding and bonding of surface functional groups of carbon black N330 and N550 took place at 400 ℃and 600 ℃ ,respective- ly. The debonding and bonding of surface functional groups of DZ13 occurred at 200℃ and 400 ℃, re- spectively. On the other hand,the surface functional groups of carbon black DZ20 bonded at 200℃ and then the bonding was broken at 600℃. The reinforcing property of carbon black DZ20 was particular- ly influenced by lactone groups,and the reinforcing property of carbon black N330, N550 and DZ13 was mainly influenced by phenolic hydroxyl groups.