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傅立叶红外光谱法研究聚丁二烯橡胶老化行为 被引量:5
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作者 马燕 王强 +2 位作者 王静 唐军 王吉德 《弹性体》 CAS 2012年第2期29-32,共4页
采用紫外光辐照加速老化和热空气加速老化方法对不同催化剂合成的聚丁二烯橡胶进行老化性能研究。并利用傅立叶变换红外光谱法研究了紫外光辐照加速老化和热空气加速老化条件下,2种橡胶的微观结构变化情况。结果表明,2种橡胶的微观结构... 采用紫外光辐照加速老化和热空气加速老化方法对不同催化剂合成的聚丁二烯橡胶进行老化性能研究。并利用傅立叶变换红外光谱法研究了紫外光辐照加速老化和热空气加速老化条件下,2种橡胶的微观结构变化情况。结果表明,2种橡胶的微观结构均出现了老化现象,并且随着老化时间的增加,老化情况也愈严重,镍系聚丁二烯橡胶的耐老化性较钕系聚丁二烯橡胶稍强。 展开更多
关键词 聚丁烯橡胶 钕催化剂 镍催化剂 老化 紫外辐照
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橡胶调节剂二哌啶乙烷的合成及其在聚丁二烯橡胶合成中的应用 被引量:2
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作者 王玉荣 杨永成 +2 位作者 李光辉 刘慧明 顾明初 《沈阳化工学院学报》 1996年第1期26-33,共8页
为了合成特殊结构的聚丁二烯橡胶,在国内我们首次合成了二哌啶乙烷(DPE),并进行了分析与鉴定.首次采用DPE做丁二烯阴离子聚合的调节剂,考察了DPE/n-BuLi(正丁基锂)和DPE/α-MNLi(α-甲基萘锂)比值... 为了合成特殊结构的聚丁二烯橡胶,在国内我们首次合成了二哌啶乙烷(DPE),并进行了分析与鉴定.首次采用DPE做丁二烯阴离子聚合的调节剂,考察了DPE/n-BuLi(正丁基锂)和DPE/α-MNLi(α-甲基萘锂)比值对形成1,2-聚丁二烯(1,2-PB)微观结构调节规律,得到了1.2-结构为100%的聚丁二烯.采用高分子设计方法,通过引入DPE,合成了1,4-1,2两嵌段和1,2-1,4-1,2三嵌段聚丁二烯,DSC-DTA示差扫描量热仪测示表明:聚丁二烯的1,2-结构含量影响其玻璃化转变温度(Tg),一定嵌段比的聚丁二烯可以产生微观相分离. 展开更多
关键词 二哌啶乙烯 调节剂 聚丁二烯 聚丁烯橡胶
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聚丁乙烯活性助剂在电线电缆用过氧化物硫化弹性体中的应用
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作者 E.Ronald Drake J.Jeffrey Holliday 宋宝生 《橡胶参考资料》 1997年第6期30-42,共13页
在橡胶过氧化物硫化过程中,首先过氧化物分解产生高活性自由基,再与橡胶分子反应生成交联键。过氧化物硫化可在橡胶基体中形成一种很强的分子链间化学键,其C—C键强于硫磺硫化形成的C—S—C键,
关键词 聚丁烯橡胶 活性剂 电线 电缆 硫化 寻氧化物
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Morphology and Properties of Miktoarm Star Styrene-Butadiene Rubber
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作者 张海燕 可勇 +1 位作者 俞科静 张兴英 《Transactions of Tianjin University》 EI CAS 2011年第3期203-207,共5页
In order to obtain the optimized structure rubber, a novel miktoarm star styrene-butadiene rubber (MS- SBR) was initiated by a multifunctional macromolecular initiator with polydiene arm and Sn-C bond. The propertie... In order to obtain the optimized structure rubber, a novel miktoarm star styrene-butadiene rubber (MS- SBR) was initiated by a multifunctional macromolecular initiator with polydiene arm and Sn-C bond. The properties of MS-SBR were investigated with respect to the morphology, mechanical properties, and dynamic viscoelasticity in comparison with those of the blends, natural rubber (NR)/star styrene-butadiene random rubber (S-SBR) blend rubber and cis-l,4-polybutadiene rubber (cis-BR)/S-SBR blend rubber. The samples were analyzed using transmission elec- tron microscopy (TEM), dynamic mechanical thermal analyzer (DMTA), and mechanical properties test. The analy- sis results show that MS-SBR possesses the desired combination of low rolling resistance and high antiskid resistance, and is promising for application in high performance tire tread. 展开更多
关键词 RUBBER morphological structure mechanical property miktoarm star copolymer
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The Effect of Ionizing Radiation and Magnetic Field on Deformation Properties of High Density PolyethylenelAcrylonitrile-Butadiene Composites
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《Journal of Chemistry and Chemical Engineering》 2012年第3期242-249,共8页
The effect of magnetic field and ionizing radiation on the mechanical properties of polymer blends consisting of high density polyethylene (HDPE) and acrylonitrile-butadiene rubber (NBR) has been investigated. The... The effect of magnetic field and ionizing radiation on the mechanical properties of polymer blends consisting of high density polyethylene (HDPE) and acrylonitrile-butadiene rubber (NBR) has been investigated. The purpose of the work was to create HDPE/NBR blend composites of significantly different compositions (with an excess of HDPE, intermediate ones, and with an excess of NBR) and to investigate the role of composition on mechanical deformation properties under the influence of magnetic field. The investigation has importance from the engineering viewpoint, since thermoplastic composite materials have been used as structural elements in thermonuclear and engineering fields, like wires, insulation materials and others, which are frequently subjected to mechanical loadings under the effect of magnetic field greater than 1 T. One part of the blends has been irradiated with 5 MeV accelerated electrons up to absorbed dose D equal to 150 kGy. Unirradiated and the radiation modified blends have been exposed to a constant magnetic field with induction B equal to 1.0 T, 1.5 T and 1.7 T. It is found that the action of magnetic field decreases the elastic modulus of unirradiated materials. Decrement of elastic modulus is reduced with increase of the content of NBR in composites. It is also found that preliminary irradiation noticeably decreases the effect of magnetic field. Data of the influence of the magnetic field, radiation cross-linking, and the ratio of the components on the creep are also obtained. 展开更多
关键词 Magnetic field radiation modification creep compliance POLYETHYLENE acrylonitrile-butadiene rubber.
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