高强度室温硫化硅橡胶研究

论文编号:CL047  论文字数:9763,页数:20

摘 要：硅橡胶具有耐高温、耐低温、防潮、绝缘、耐老化等优异性能，被广泛应用于国民经济众多领域，尤其是室温硫化硅橡胶。由于纯室温硫化硅橡胶力学性能较差，因此加入补强填料才具有使用价值。通常采用白炭黑作为补强填料，为了降低成本，人们寻找其他廉价易得的填料来代替，然而大都只能作为增量剂而无补强特性。本课题来自生产实际，目前提高室温硫化硅橡胶的强度多集中在填料研究上，而对用量较少的交联剂研究甚少，这不利于无论是工厂或是科研工作者对室温硫化硅橡胶的认识，从而使得在研究中难免盲目地去研究或是改性室温硫化硅橡胶。本课题拟在不同型号的白炭黑和相同型号不同用量的白炭黑对胶硫化后的力学性能做出评价，并选用不同型号交联剂（甲基三乙酰氧基硅烷）和相同型号不同用量的交联剂对胶力学性能的影响做分析，通过以上两个评判，选取最佳点重现，以此为依据提高室温硫化硅橡胶的力学性能。

关键词：有机硅材料；室温硫化硅橡胶；甲基三乙酰氧基硅烷；RTV；  胶粘剂

Abstract: Silicone rubber with high temperature, low temperature, moisture, insulation, anti-aging excellent performance, are widely used in many areas of the national economy, in particular silicone rubber. As the pure silicone rubber poor mechanical properties, so it has a value adding reinforcing filler. Commonly used silica as a reinforcing filler, in order to reduce costs, people look for other cheap and easy to get a filler to replace, but mostly only as extender without reinforcement properties. The subject comes from actual production, the current increase the strength of silicone rubber and more focused on filling research and study on the amount of crosslinker little less, is not conducive to either plant or a research worker to room temperature vulcanized silicone understanding of rubber, which makes it inevitable blind study to study, or modified silicone rubber. The aim of this in different types of silica and the same model with different amount of silica on the mechanical properties of rubber vulcanization made after the evaluation, and use different types of cross-linking agent (methyl 3-acetoxy-silane) and the same amount of different models crosslinking agent on the mechanical properties of rubber to do analysis, by these two judges to select the best point to reproduce, as a basis to improve room temperature mechanical properties of silicone rubber.

Keywords：Organic silicon material; room temperature vulcanized silicone rubber; methyl 3-acetoxy-silane; RTV; adhesive
目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1
 1.1有机硅发展简史     1
 1.2室温硫化硅橡胶（RTV）的发展和用途 2 
 1.3室温硫化硅橡胶的特点与分类 5
 1.4固化机理及制备 6
     1.4.1固化机理 7
     1.4.2 制备设备及工艺介绍 7 
2.研究方向 7
3.实验部分 8
 3.1实验原料准备 8
 3.2脱醋酸型RTV-1的制备 9
 3.3产品性能检测 10
 3.4产品加速贮存测试 10
4. 结果与讨论 11
 4.1气相法二氧化硅对拉伸强度的影响 11
 4.2气相法二氧化硅对断裂伸长率的影响 12
 4.3甲基三乙酰氧基硅烷用量对固化深度的影响 13
 4.4甲基三乙酰氧基硅烷用量对拉伸强度的影响 13
5．总结与展望 15
致谢 16
参考文献 17

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