摘要
ＰＶＣ和ＰＶＣ／ＭＢＳ共混物在紫外线辐照下，表面能迅速提高，最高达到５８×１０－２Ｎ／ｍ，表明ＰＶＣ和ＰＶＣ／ＭＢＳ表面发生光交联和光氧化反应。加入ＭＢＳ可抑制ＰＶＣ光交联，但加速ＰＶＣ光氧化和光降解。ＰＶＣ／ＭＢＳ共混物在紫外光照下，由于ＰＶＣ光氧化生成羰基其表面能迅速提高，长时间光照，表面能降低。
In
UVirradiation the surface energy of PVC and PVC/MBS raised rapidly,the maximum would
be 5.810-2N/m,which showed photocrosslinking and photooxdation took place on the
surface of PVC and PVC/MBS.The use of MBS could restrain the photocrosslinking of
PVC,but accelerated and raised the photooxdation and photodegradation of PVC.In
UVirradiation carboxides formed due to the photooxdation of PVC.In UVirradiation
carboxides formed due to the photooxdation of PVC.but accelerate and raise the
photooxdation and photodegradation of PVC.In UVirradiation carboxides formed due to the
photooxdation of PVC made the surface energy raised rapidly,but after a long time of
the irradiation the surface energy lowered,which was a result of the loss of polar
groups and the decrease of the surface density of the blend cuased by the
photodegradation.
出处
《塑料工业》
CAS
CSCD
北大核心
1999年第4期28-29,35,共3页
China Plastics Industry
