共查询到18条相似文献,搜索用时 140 毫秒
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沉淀法白炭黑是众所周知的硅橡胶补强填料,本文推介一类能够提升高端硅橡胶产品性能的新型定制沉淀法白炭黑,这些新品级沉淀法白炭黑适用于高温硫化(HTV)硅橡胶、液体硅橡胶(LSR)以及2-C硅橡胶(RTV-2C)。本文主要研究合成这种白炭黑的基本制造工艺以及获取高质量产品的特殊措施。主要研究用于HTV硅橡胶中的新产品以及应用性能,从而表明相对于标准品级白炭黑的技术优势。这些新 相似文献
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本文叙述了气相法白炭黑的制法和它的粒径、比表面积、结构等对硅橡胶的补强性的影响,其表面化学性质对补强性的影响,pH值对胶料性能的影响。并且列举三个实例详细说明气相法白炭黑在硅橡胶制品中的应用情况。 相似文献
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综述了热硫化硅橡胶泡沫用补强填料白炭黑、T-Zn O晶须、硅灰石晶须、二氧化硅纳米管和石墨烯等的研究进展,并展望了今后热硫化硅橡胶泡沫用补强填料的研究方向。 相似文献
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Shen Diao Shengyou Zhang Zhizhou Yang Shengyu Feng Changqiao Zhang Zhaohua Wang Guogang Wang 《应用聚合物科学杂志》2011,120(4):2440-2447
Two kinds of treated fumed silica were prepared by treatment with either tetraphenylphenyltriethoxysilane (TPHTS) or both tetraphenylphenyltriethoxysilane and hexamethyldisilazane (TPHMTS), and were used as reinforcing filler for silicone rubber. The resistance to irradiation of the silicone rubber obtained was investigated by gamma ray of dose 500 kGy in air. The mechanical properties and the average molecular weight between crosslinking points (Mc) of the silicone rubber were determined before and after irradiation. The results show that the fumed silica treated by tetraphenylphenyltriethoxysilane (TPHPHS) can effectively improve the radiation resistance of silicone rubber while the fumed silica treated by both tetraphenylphenyltriethoxysilane and hexamethyldisilazane (MMN) cannot only effectively improve the radiation resistance of silicone rubber but also has excellent reinforcing effect on silicone rubber. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011 相似文献
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石墨及其表面改性对硅橡胶导热性能的影响 总被引:3,自引:0,他引:3
用双辊混炼机将导热填料分散到聚甲基乙烯基硅氧烷中,再配以增强剂、硫化剂等,经模压硫化制得导热硅橡胶。研究了导热填料种类、石墨的表面改性和用量以及石墨与炭黑的复配对硅橡胶导热性和力学性能的影响。结果表明,在用量相同的情况下,导热填料的导热系数越高,其填充硅橡胶的导热性越好,且硅橡胶的导热系数随导热填料用量的增加而增大。石墨的表面改性改善了石墨与硅橡胶的界面相容性,使硅橡胶的力学性能和导热性都得到提高。不同粒径及颗粒形态的炭黑与石墨复合可改善硅橡胶的导热性和力学性能,导热硅橡胶的拉伸强度和扯断伸长率随复合填料中炭黑用量的增加而提高,当石墨与炭黑质量比为25/5时,硅橡胶的导热系数最高,综合性能较好。 相似文献
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采用沉淀法和气相法纳米SiO2补强硅橡胶,考察纳米SiO2的添加量和比表面积对结合橡胶量、橡胶吸附层厚度以及硅橡胶补强力学性能的影响.通过溶胀平衡实验计算填料补强能力参数C值,并通过扫描电镜观察填料纳米SiO2在硅橡胶中的分散状态.结果表明:填料添加量对硅橡胶力学性能的影响效果显著,当质量比为0.4时,补强橡胶具有较好的力学综合性能,结合橡胶量增大至49.24%,吸附层厚度增至6.87nm,对于气相法纳米SiO2,增大填料比表面积有利于提高结合橡胶量,改善填料的补强效果,补强硅橡胶热稳定性也相应提高,此外填料的C值也随之增大,选一步验证了填料的补强效果增强. 相似文献
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医用硅橡胶凝胶量的控制 总被引:1,自引:0,他引:1
采用过氧化物做交联剂,白碳黑做补强剂,研究了硅橡胶混炼胶凝胶量的形成以及对性能的影响。说明不加结构控制剂的硅橡胶凝胶量是可控制的,这种胶料的物理机械性能可以满足使用要求。 相似文献
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Simultaneously reduced viscosity and enhanced strength of liquid silicone rubber/silica composites by silica surface modification
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Silica is the most widely‐used filler to reinforce liquid silicone rubber (LSR), but the high viscosity of LSR/silica suspension significantly limits its processing flexibility. To balance the processibility and reinforcing efficiency of LSR/silica systems, two kinds of enols (propenol and 1‐undecylenyl alcohol) and a saturated alcohol (1‐undecylic alcohol) were employed to modify the silica surface. Various rheological tests were carried out to investigate the processibility as well as filler networking and crosslinking processes of the modified systems. Tensile tests were also adopted to verify the reinforcing effect. It was found that surface modification of silica by 1‐undecylenyl alcohol could significantly reduce the viscosity of its suspension with LSR. Meanwhile, the mechanical strength of LSR could be largely enhanced by six times with 10 wt % modified silica. This work will merit design and production of LSR materials with balanced processibility and mechanical performance. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 45544. 相似文献