南京化工大学学报(自然科学版)
南京化工大學學報(自然科學版)
남경화공대학학보(자연과학판)
JOURNAL OF NANJING UNIVERSITY OF CHEMICAL TECHNOLOGY
2001年
2期
11-15
,共5页
高聚合度聚氯乙烯%聚甲醛%丁腈橡胶%共混弹性体%相容性
高聚閤度聚氯乙烯%聚甲醛%丁腈橡膠%共混彈性體%相容性
고취합도취록을희%취갑철%정정상효%공혼탄성체%상용성
采用机械共混、化学交联工艺制备高聚合度聚氯乙烯(HMWPVC)/聚甲醛(POM)/丁腈橡胶(NBR)三元共混弹性体合金。重点讨论了HMWPVC/POM/NBR共混比、PVC树脂的相对分子质量、NBR橡胶的丙烯腈含量、硫化体系等因素对弹性体性能的影响。HMWPVC/POM/NBR共混弹性体的力学性能、耐油耐溶剂性能优于PVC/POM/NBR共混弹性体。采用动态粘弹谱仪、扫描电子显微镜等现代分析技术研究了HMWPVC/POM/NBR三元共混弹性体的微观结构，结果显示HMWPVC/POM/NBR(10/10/80)三元共混弹性体的tgδ－T谱上只出现一个峰值，其对应的玻璃化转变温度为－0.8℃，三元共混弹性体具有较好的相容性。
採用機械共混、化學交聯工藝製備高聚閤度聚氯乙烯(HMWPVC)/聚甲醛(POM)/丁腈橡膠(NBR)三元共混彈性體閤金。重點討論瞭HMWPVC/POM/NBR共混比、PVC樹脂的相對分子質量、NBR橡膠的丙烯腈含量、硫化體繫等因素對彈性體性能的影響。HMWPVC/POM/NBR共混彈性體的力學性能、耐油耐溶劑性能優于PVC/POM/NBR共混彈性體。採用動態粘彈譜儀、掃描電子顯微鏡等現代分析技術研究瞭HMWPVC/POM/NBR三元共混彈性體的微觀結構，結果顯示HMWPVC/POM/NBR(10/10/80)三元共混彈性體的tgδ－T譜上隻齣現一箇峰值，其對應的玻璃化轉變溫度為－0.8℃，三元共混彈性體具有較好的相容性。
채용궤계공혼、화학교련공예제비고취합도취록을희(HMWPVC)/취갑철(POM)/정정상효(NBR)삼원공혼탄성체합금。중점토론료HMWPVC/POM/NBR공혼비、PVC수지적상대분자질량、NBR상효적병희정함량、류화체계등인소대탄성체성능적영향。HMWPVC/POM/NBR공혼탄성체적역학성능、내유내용제성능우우PVC/POM/NBR공혼탄성체。채용동태점탄보의、소묘전자현미경등현대분석기술연구료HMWPVC/POM/NBR삼원공혼탄성체적미관결구，결과현시HMWPVC/POM/NBR(10/10/80)삼원공혼탄성체적tgδ－T보상지출현일개봉치，기대응적파리화전변온도위－0.8℃，삼원공혼탄성체구유교호적상용성。
Ternary blending elastomers comprised of high degree polymerizaed PVC(HMWPVC), polyformaldehyde(POM) and acrylonitrile-butadiene rubber(NBR) were prepared by the process of mechanical blending at high temperature and chemical crosslinking. The effects of blending ratio of HMWPVC/POM/NBR, average degrees of polymerization(\{DP\}) of polyvinyl chloride resins, types of NBR rubbers and curing systems on the properties of ternary blending elastomer were discussed. The ternary blending elastomer of HMWPVC/POM/NBR had better physical mechanical properties, oil and solvent resistance than that of the ternary blending elastomer of PVC/POM/NBR. The experiment data of scanning electron microscope and dynamic mechanical analysis showed that the ternary blends had better compatibility. The glass transition temperature of the ternary blending elastomer of HMWPVC/POM/NBR(10/10/80,by wt.) was -0.8℃.
