摘要
采用动态硫化法制备了高抗冲聚苯乙烯(HIPS)/丁苯橡胶(SBR)热塑性硫化胶(TPV)及苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)增容HIPS/SBR TPV,通过橡胶加工分析仪研究了TPV的Payne效应,并利用Kraus模型进行了拟合。结果表明,在相同应变下,随着HIPS/SBR TPV中HIPS含量的增加,TPV的储能模量(G')和损耗模量(G″)均增大;在不同测试温度条件下,随着应变的增加,纯SBR硫化胶的G'及G″变化不大,未出现Payne效应,HIPS/SBR TPV及SBS增容HIPS/SBR TPV均呈现明显的Payne效应;在应变测试范围内,利用Kraus模型对HIPS/SBR TPV及SBS增容HIPS/SBR TPV的G'拟合较好,但不能对G″有效拟合;提高测试温度,HIPS/SBR TPV及SBS增容HIPS/SBR TPV的小应变下G'初始值与大应变下Payne效应终止时G'值降低,G″达到最大值时的应变振幅特征值增大。
The high impact polystyrene （HIPS） / styrene-butadiene rubber （SBR） thermoplastic vulcanizate （TPV） and styrene-butadience-styrene block copolymer （SBS） compatibilized HIPS/SBR TPV were prepared by dynamic vulcanization,the Payne effect of the TPV was characterized and fitted by rubber process analyzer and the Kraus model respectively.The results showed that at the same strain,the storage modulus（G＇） and loss modulus （G＂） of HIPS/SBR TPV increased with increasing the content of HIPS.At different temperatures,with the increase of strain,the G＇and G＂ of SBR vulcanizates had little change,and showed no Payne effect,but HIPS/SBR TPV and SBS compatibilized HIPS/SBR TPV showed obvious Payne effect.Under the condition of strain scanning mode,the variation of G＇ of the two TPV fitted well with Kraus model,but the variation of G＂ did not.By increasing temperature,the G＇ initial value at low strain and the G＇value at the end of Payne effect at big strain decreased,and the strain amplitude eigenvalue at maximum of G＂ increased.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
2014年第3期194-199,共6页
China Synthetic Rubber Industry
基金
山东省自然科学基金资助项目(ZR 2012 EMM 002)
山东省高等学校科技计划资助项目(J 12 LA 15)
青岛市科技发展计划资助项目[12-1-4-3-(9)-jch]
