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chlorinated butyl rubber/two-step modified montmorillonite nanocomposites:Mechanical and damping properties

Chinese Journal of Chemical Engineering 2022年第2期35卷 437-449页

作者： Keya Tang Jincheng Wang College of Chemistry and Chemical Engineering Shanghai University of Engineering ScienceShanghai 201620China

Montmorillonite(MMT) was modified by ultrasound and castor oil quaternary ammonium salt intercalation method to prepare a new type of organic montmorillonite(OMMT). The surface structure, particle morphology, interlayer distance, and thermal behavior of the samples obtained were characterized. The modified OMMT was then added to chlorinated butyl rubber(CIIR) by mechanical blending, and a composite material with excellent damping properties was obtained. The mechanical experiment results of CIIR nanocomposites showed that the addition of OMMT improved their tensile strength, hardness,and stress relaxation rate. Compared with pure CIIR, when the content of OMMT was 5 phr(part per hundred of rubber), the tensile strength of the nanocomposite was increased by 677% and the elongation at break was also increased by 105.4%. The enhancement of this performance was mainly due to the dispersion of the nanosheets in CIIR rubber and the chemical interaction between the organoclay and the polymer matrix, which was confirmed by morphology and spectral analysis. OMMT also endowed a positive effect on the damping properties of CIIR nanocomposites. After adding 5 phr of OMMT, the nanocomposite owned the best damping performance, and the damping factor, tanδmax, was 37.9% higher than that of pure CIIR. Therefore, the good damping and mechanical properties of these CIIR nanocomposites provided some novel and promising methods for preparing high-damping rubber in a wide temperature range.

关键词： Montmorillonite Nanostructure chlorinated butyl rubber Polymer processing Composites

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Study on the morphology, rheology and surface of dynamically vulcanized chlorinated butyl rubber/polyethylacrylate extrudates

Study on the morphology, rheology and surface of dynamically...

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2006年全国高分子材料科学与工程研讨会

作者： Jinrong Wu Qiying Pan Guangsu Huang (College of Polymer Science and Engineering State Key Laboratory of Polymer MateriaJ Engineering Sichuan University Chengdu 610065 China)

＜正＞In our recent work, we have prepared a high-damping material composed of chlorinated butyl rubber （CIIR） and Polyethylacrylate （PEA）. For the purpose of continuously producing the high-damping material, a twin-screw extruder is adopted in this work to prepare CIIR/PEA TPV extrudate with excellent surface quality. The barrel of the extrduder is divided into eight zones from the feeding hopper to the die and the barrel temperature of each zone is set as shown in Table 1 。The

关键词： chlorinated butyl rubber Polyethylacrylate Reactive extrusion Rheology Morphology

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