摘要
本文采用硫醇类化合物作为聚氯乙烯和三元乙丙椽胶的共混物的偶联剂,用机械共混法制样,研究了共混条件及其混合物组成对共混物的力学性能的影响。研究表明,硫醇类化合物对 PVC/EPDM 共混体系是有效的。在180℃下,共混物的抗冲性能在一定范围内随着偶联剂的增加而增加,偶联共混物的抗冲强度为简单共混物抗冲强度的十几倍。同时,我们采用计算机对实验数据进行线性回归,从而得到其力学性能的回归方程。并且验证了其弹性模量可以用 Uemura 和 Takayanagi 方程及修正 Kener 方程进行模拟。动态粘弹仪(DDV)、扫描电子显微镜(SEM)研究证实了在有偶联剂下 EPDM 对 PVC 的增韧作用。
Using some mercapto compound as a coupling agent,the PVC/EPDM blendshave been prepared with mechanical blending technique.The influences of itscompositions and the blending conditions on the mechanical properties of theblends have been studied.It is found that the mercapto compound is in effectto this blend.The impact strength of the blend is increased with the in-creases of coupling agent content.Additionally,the regression equations ofblend's mechanical properties have been obtained by linear regression analyzingof the expermental data.And,it is certified that the elastic modulus of theblends can be simulated with Uemura and Takayanagi equation and modifiedKener equation.Through the DDV and SEM studies,the toughening effect ofEPDM to PVC in presence of coupling agents also,has been certified.
出处
《中国塑料》
CAS
CSCD
1990年第1期16-23,共8页
China Plastics
