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首页> 外文会议>Moratuwa Engineering Research Conference >The effectiveness of a watersoluble synthetic acrylic polymer in enhancing reinforcing action of silica in carboxylated acrylonitrile butadiene rubber latex
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The effectiveness of a watersoluble synthetic acrylic polymer in enhancing reinforcing action of silica in carboxylated acrylonitrile butadiene rubber latex

机译：水溶性合成丙烯酸聚合物在羧基化丙烯腈丁二烯橡胶胶乳中增强二氧化硅增强作用中的有效性

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摘要

Carboxylated acrylonitrile butadiene rubber (XNBR) latex was filled with surface modified precipitated silica. Surface modification of silica was affected in an aqueous medium by reacting with a synthetic polymer (SP) containing both hydrophilic and hydrophobic groups. The effectiveness of SP in enhancing reinforcing action of silica in XNBR latex films was evaluated through investigation of mechanical properties of vulcanized latex films cast from XNBR latex compounds filled with modified silica over a range of 5 to 20 phr loadings. Tear strength, which is an important mechanical property in certain latex based products like gloves, of modified silica filled cast films was found to be improved in comparison with that of unmodified silica filled cast films. Tear properties of cast films were continued to increase within the range of filler loadings investigated. An optimization of tensile strength was observed at 15phr filler loading in films containing modified fillers and it exceeds the tensile strength of unmodified filler added films with same loading. Morphological studies performed by scanning electron microscopy illustrated that a better distribution of modified filler particles within the XNBR matrix has occurred which may be a consequence of the discouragement of filler aggregation with surface modification. Surface modification of silica has improved the reinforcement action on XNBR.
机译：羧化丙烯腈丁二烯橡胶（XNBR）胶乳填充有表面改性的沉淀二氧化硅。通过与含有亲水性和疏水基团的合成聚合物（SP）反应，在水性介质中受到二氧化硅的表面改性。通过研究从填充有5至20phrl载荷的改性二氧化硅的XNBR胶乳膜的机械性能，通过研究从填充5至20phrl载量的修饰二氧化硅浇注的XNBR胶乳膜的机械性能来评估Sp在XNBR胶乳膜中增强二氧化硅增强作用的有效性。与未改性二氧化硅填充的铸膜的铸膜相比，发现撕裂强度是在手套中的某些胶乳填充的铸膜中的一个重要的机械性质。继续浇注薄膜的撕裂性能在研究的填充载荷范围内增加。在含有改性填料的薄膜中，在15PhR填充物载荷中观察到拉伸强度的优化，并且它超过了具有相同载荷的未改性填料添加薄膜的拉伸强度。通过扫描电子显微镜进行的形态学研究表明，已经发生了XNBR基质内改性填料颗粒的更好分布，这可能是填充聚集与表面改性的呼吁的结果。二氧化硅的表面改性改善了XNBR上的增强作用。

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