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加工助剂在白炭黑胎面胶中的应用 总被引:1,自引:2,他引:1
研究加工助剂莱茵塑分ST和GT对溶聚丁苯橡胶(S-SBR)/BR胶料以及莱茵塑分ST用量对S-SBR/乳聚丁苯橡胶(E-SBR)/BR胶料性能的影响。结果表明,在S-SBR/BR胶料中加入莱茵塑分ST和GT,可以降低胶料的门尼粘度,改善胶料的加工性能,对硫化胶的物理性能影响不大。在S-SBR/E-SBR/BR胶料中加入莱茵塑分ST,可以显著改善胶料的加工性能,提高硫化胶的定伸应力和耐热老化性能;莱茵塑分ST用量为4份时,硫化胶的动态力学性能最佳。 相似文献
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本文介绍了加工助剂莱茵塑分T和增塑剂A在全钢载重子午线轮胎胎面配方中的胶料性能对比,并着重考察了对胎面挤出性能和外胎性能的影响。试验结果表明,使用加工助剂能降低胎面的挤出温度,提高胎面的挤出速度;两种加工助剂相比,含莱茵塑分T的胶料老化性能、疲劳性能和分散性以及胎面挤出温度和断面气孔情况均比增塑剂A好;外胎的耐久试验均超过国家标准。 相似文献
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研究绿色环保塑分剂FNP-60A在半钢轮胎胎面胶配方中的应用。结果表明:加入绿色环保塑分剂FNP-60A,胶料门尼粘度降低效果接近加入脂肪酸锌的胶料,与国外同类产品胶料相比稍有优势;对胶料的硫化性能、焦烧时间、动态力学性能影响不大,与脂肪酸锌和国外同类产品接近;对胶料的拉断伸长率和耐屈挠性能有明显提升效果。绿色环保塑分剂FNP-60A的使用可以减小胶料中的锌含量,有利于环保。 相似文献
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增塑剂RF50在NR中的应用 总被引:1,自引:0,他引:1
研究增塑剂RF50在NR中的应用,并与进口增塑剂A50P进行对比.结果表明:加人2份增塑剂RF50,可以减小胶料的门尼粘度,改善胶料的加工性能,降低能耗,延长胶料的t(90),提高胶料的抗硫化返原性和炭黑分散性,对硫化胶的物理性能影响不大;其在NR中的应用效果与增塑剂A50P相当. 相似文献
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选用具有丰富不饱和共轭三键的桐油为原料,并通过酯交换、D–A反应对其改性合成了具有六元环结构的多酯类化合物3–正丁基–6–(9–癸烯酸甲酯–10基)–4–环己烯二酸二异辛酯(METATM),并对其改性聚氯乙烯(PVC)的各项性能进行了研究。结果表明,桐油具有丰富的α–桐酸,其甲酯与马来酸二异辛酯合成METATM的最佳工艺为:桐油甲酯与马来酸二异辛酯的物质的量之比为1∶1,反应温度为220℃,反应时间为5 h,转化率达97.4%;其产品闪点与加热减量均优于邻苯二甲酸二辛酯(DOP),对PVC具有较好的增塑性能,但效果不及DOP,更适合作为辅助增塑剂与DOP复配使用,可有效降低非环保增塑剂的使用量。 相似文献
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Nanoparticles (NP) filled permanently antistatic poly(vinyl chloride) (PVC) composites, constituted of dibutyl phthalate (DBP) and antistatic plasticizer (AP) which included bis[2‐(2‐methoxyethoxy)ethyl]phthalate doped with sodium perchlorate (NaClO4), were prepared in a Haaka torque rheometer. Surface resistivity measurement, mechanical test, scanning electron microscopy (SEM) investigation, and thermal gravimetric analysis (TGA)‐differential scanning calorimetry (DSC) analysis were used to investigate the comprehensive properties of PVC/AP/NP (100/40/x) (A40/NP) and PVC/AP/DBP/NP (100/40/40/x) (A80/NP) composites. The results demonstrated that the surface resistivity of A40/NP composites was lower than that of pure A40 composites at a humidity of 60% and 0.1% as the nano SiO2 or TiO2 content is 2 phr, respectively. Moreover, the surface resistivity of A40 composites was decreased by about half an order of magnitude even at the humidity of 0.1% when 2 phr of NP was added. The surface resistivity of A80/NP composites achieved the optimum value as the SiO2 and TiO2 content were 1 phr and 2 phr, respectively. Because the DBP functioned as small molecule plasticizer which endowed PVC composites with comparatively large free volume, the surface resistivity of A80/NP composites is much lower than that of A40/NP composites. The tensile strength and elongation at break of A40/NP (100/2) and A80/NP (100/2) were increased to some extent with respect to pure PVC/AP composites. DSC‐TGA analysis and rheological properties demonstrated that NP filled PVC composites processed good thermostability and thermoprocessability. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013 相似文献