共查询到17条相似文献,搜索用时 218 毫秒
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NBR/三元尼龙/二元尼龙三元共混型热塑性弹性体制备工艺与性能的研究 总被引:4,自引:0,他引:4
在开炼机上用动态硫化法制备了NBR/三元尼龙/二元尼龙三元共混型热塑性弹性体。研究了共混工艺、返炼次数、动态硫化温度、二元尼龙用量等因素对材料性能的影响。NBR/三元尼龙/二元尼龙三元共混型热塑性弹性体不仅具有优异的耐溶剂性,而且其物理性能也较好。 相似文献
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NBR/PVC热塑性弹性体的性能研究及应用 总被引:1,自引:1,他引:0
选用不同硫化体系,用动态硫化法制备了丁腈橡胶(NBR)/聚氯乙烯(PVC)热塑性弹性体,考察了硫化体系、增塑剂邻苯二甲酸二辛酯(DOP)用量、填料种类、NBR与PVC的质量比对热塑性弹性体性能的影响.结果表明,采用过氧化二异丙苯/硫磺复合硫化体系硫化的热塑性弹性体的性能较好;炭黑的增强效果优于白炭黑和轻质碳酸钙;DOP用量增加,热塑性弹性体的综合力学性能下降;NBR与PVC的质量比增加,热塑性弹性体的柔性增加.所研制的NBR/PVC经压延塑化造粒、注射成型可以制得某品牌汽车的油箱密封垫片,极大地提高了生产效率,提高了市场竞争力. 相似文献
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Mohammad Razavi‐Nouri Ghasem Naderi Ali Parvin Mir Hamid Reza Ghoreishy 《应用聚合物科学杂志》2011,121(3):1365-1371
A thermoplastic elastomer (TPE) nanocomposite based on polypropylene (PP), acrylonitrile–butadiene rubber (NBR), and a nanoclay (NC) was prepared in a laboratory mixer with a 54/40/6 weight ratio. The effects of NC on the thermal properties, crystalline structure, and phase morphology of the TPE nanocomposite were studied in this work. The results obtained from the nonisothermal crystallization of PP, PP/NBR, and PP/NBR/NC, which was carried out with differential scanning calorimetry, revealed that the overall rate of crystallization of PP decreased with the addition of NBR to PP and increased when NC was incorporated into the nanocomposite. In addition, the crystallite size distribution was more uniform for the PP phase crystallized in the nanocomposite versus the PP itself. Also, although the PP in the reference blend (PP/NBR) crystallized only in the α form, the crystalline structure of the PP incorporated into the nanocomposite was a mixture of α‐ and γ‐crystalline forms. The effects of NC on the phase morphology of PP/NBR blends prepared with three different cooling methods (quenching in liquid nitrogen, cooling between two metal plates at room temperature, and molding at a high temperature in a hot press) were studied. For the samples quenched in liquid nitrogen or cooled between metal plates, a particulate–cocontinuous morphology formed. However, for the samples prepared under a hot press, a laminar‐like morphology was observed. In all three cases, a similar particulate–cocontinuous morphology formed for the reference blend, but the rubber inclusions were always smaller than those of the TPE nanocomposite. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 相似文献
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NBR/PVC热塑性弹性体耐热老化性能研究 总被引:2,自引:0,他引:2
考察了硫化体系、PVC聚合度、DOP用量、抗氧剂种类及用量对丁腈橡胶/聚氯乙烯(NBR/PVC)热塑性弹性体(TPE)的耐热老化性能的影响。试验结果表明:NBR/PVC:的质量比为70:30时,酚醛树脂硫化体系制备的TPE的耐热老化性能最好;增加PV(:的聚合度,TPE的耐热老化性能提高;DOP用量越大。TPE的耐热老化性能越差;抗氧剂2246对TPE的耐热老化性能最好,其最佳用量为2.0份。 相似文献
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Different grades of oil resistant thermoplastic elastomers (TPE) based on blends of nitrile rubber (NBR) and high density polyethylene (HDPE) have been developed. Chemical treatment of HDPE to evolve compatibility with NBR and dynamic vulcanization with different curatives have been studied. Determination of physico‐mechanical and thermal properties and relative crystallinity of these blends have been carried out. Oil resistance characteristics of the blends have been evaluated in different commercially used oils and fuels for applications as a substitute for NBR/polyvinyl chloride (PVC) blends. 相似文献
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NBR/PVC热塑性弹性体的耐油性能研究 总被引:2,自引:0,他引:2
考察了硫化剂种类及用量、橡塑比和PVC的相对分子质量对NBR/PVC热塑性弹性体(TPE)耐油性能的影响。实验结果表明,TCY(三聚硫氰酸)硫化体系制备的NBR/PVC的耐油性能最好,TMTD(二硫化四甲基秋兰姆)体系次之,酚醛树脂和硫磺2种体系最差;TCY的用量越大,TPE的耐油性越强,其最佳用量为2.0份;橡塑比中PVC所占比例增大,TPE的耐油性下降;增加PVC的相对分子质量,TPE的耐油性明显提高。 相似文献