NR

NR/BR/TPI共混物硫化体系的研究

赵金义，孟凡良，黄宝琛，姚薇，张玉瑾
(青岛科技大学高分子科学与工程学院，山东青岛266042)

摘要：研究了普通硫化体系(CV)、半有效硫化体系(SEV)和有效硫化体系(EV)对NR/BR/TPI共混物(共混比为40/40/20)性能的影响，特别是CV体系中硫黄和促进剂DM用量的影响。结果表明，采用CV体系，NR/BR/TPI共混物的耐疲劳性能等物理性能较好，硫黄用量为3份、促进剂DM用量为1份时，共混物的撕裂强度和耐屈挠性能最好，其它性能也保持在较高水平。配合剂直接加入共混胶中混炼比分别加入3种生胶混炼后再加以混合的方式可获得更好的力学性能，但正硫化时间和焦烧时间缩短。
关键词：NR；BR；TPI；胎侧胶；硫化体系

中图分类号：TQ3321+2；TQ3333；TQ3301+3文献标识码：A文章编号：1000890X(2004)10058105
作者简介：赵金义(1951)，男，内蒙古呼和浩特人，青岛科技大学高级工程师，学士，主要从事橡胶工程教学与科研工作。

Study on curing system of NR/BR/TPI blend

ZHAO Jinyi,MENG Fanliang,HUANG Baochen,YAO Wei,ZHANG Yujin
(Qingdao University of Science and Technology,Qingdao266042,China)

Abstract:The effects of the conventional vulcanization(CV),semiefficient vulcanization(SEV),efficient vulcanization(EV),especially the levels of sulfur and accelerator DM on the properties of NR/BR/TPI(40/40/20) blend were investigated.The results showed that the better fatigue property of the blend was obtained by using CV system,and the best tear strength and flexibility of the blend were obtained by using 3 phr of sulfur and 1 phr of DM without affecting the other properties.
Keywords:NR;BR;TPI;sidewall compound;curing system

NR/中空微球复合材料传热的有限元分析

梁基照，李锋华
（华南理工大学工业装备与控制工程学院，广东广州510640）

摘要：应用ANSYS软件对聚合物/中空微球复合材料单元中的热传递进行了有限元分析，并计算出中空微球填充NR复合材料的等效导热系数ke值。结果表明，ke随着中空微球体积分数f的增大呈线性减小，且随着微球粒径的增大有所减小。此外，三维有限元模拟的ke值高于二维，两者的差异随着f的增大而增大。
关键词：NR；中空微球；导热系数；数值模拟

中图分类号：TQ330.38+3；O241.82文献标识码：A文章编号：1000890X(2004)10058604
作者简介：梁基照(1953)，男，广东顺德人，华南理工大学教授，博士，主要从事聚合物复合材料及其加工领域的研究。

FEA of heat transfer in NR/hollow bead composite

LIANG Jizhao,LI Fenghua
(South China University of Technology,Guangzhou510640,China)

Abstract:A finite element analysis(FEA) of the heat transfer in NR/hollow bead composite was made and the equivalent thermal conductivity(ke) was calculated.The results showed that ke decreased linearly with the increase of the bead volume fraction f and decreased somewhat with the increase of the bead particle size.Furthermore,ke from the 3D FE simulation was higher than that from 2D FE simulation,and the difference between them increased with the increase of f.
Keywords:NR;hollow bead;thermal conductivity;digital simulation

有机锡热稳定剂对CPE脱氯化氢热降解性的影响

张军，林珩，胡友勤
（南京工业大学材料科学与工程学院，江苏南京210009）

摘要：采用刚果红法研究有机锡热稳定剂对氯化聚乙烯（CPE）脱氯化氢热降解性的影响。结果表明，硫醇锡复合热稳定剂T137和T395A抑制CPE脱氯化氢的效果优于非硫醇锡热稳定剂二月桂酸二丁基锡；环氧大豆油能协同二月桂酸二丁基锡减慢CPE脱氯化氢速度；热稳定剂用量小于3份时，二月桂酸二丁基锡/二盐基亚磷酸铅和二月桂酸二丁基锡/硬脂酸钡并用体系（并用比1∶1）抑制CPE脱氯化氢的效果较二月桂酸二丁基锡差，热稳定剂用量为3份时则较好。
关键词：氯化聚乙烯；有机锡热稳定剂；脱氯化氢；热降解性；刚果红法

中图分类号：TQ33392；TQ33038+7文献标识码：A文章编号：1000890X(2004)10059004
作者简介：张军(1964)，男，江苏姜堰人，南京工业大学副教授，硕士，从事高分子材料的教学与科研工作。

Effect of organotin stabilizers on dehydrochlorination of CPE

ZHANG Jun,LIN Heng,HU Youqin
(Nanjing University of Technology,Nanjing210009,China)

Abstract:The effect of various organotin stabilizers on the thermal degradation via dehydrochlorination of CPE was investigated by Congo Red Method.The results showed that the dibutyl tin bis(2mercaptobenzothiazole) stabilizers T137 and T395A were better than dibutyl tin dilaurate in terms of inhibiting the dehydrochlorination of CPE;the better stabilizing effect was also obtained by using 1 phr of dibutyl tin dilaurate combined with 5 phr of epoxidized soybean oil;and the dibutyl tin dilaurate/dibasic lead phosphite or barium stearate blend systems were better than dibutyl tin dilaurate when their addition levels were more than 3 phr respectively.
Keywords:CPE;organotin;thermal stabilizer;dehydrochlorination;thermal degradation;Congo red Method