tespt -硅烷偶联剂对二氧化硅填充天然橡胶和环氧化天然橡胶的转矩性能和填料分散度的影响

I. Surya, N. Hayeemasae
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引用次数: 2

摘要

研究了双(三乙氧基硅丙基)四硫化物或tespt -硅烷偶联剂的加入对天然橡胶(NR)、环氧化量为25%摩尔的天然橡胶(ENR 25)和环氧化量为50%摩尔的天然橡胶(ENR 50)的硅填充物的扭矩性能和填料分散度的影响。所有的橡胶以固定的负荷(30.0份/百橡胶,phr)用二氧化硅填料填充,并在1.0phr的浓度下将TESPT添加到每种二氧化硅填充的橡胶化合物中。结果表明,测试对所有硅填充橡胶的转矩性能都有影响。TESPT降低了NR体系的最小转矩,但增加了enr体系的最小转矩和所有橡胶体系的最大转矩差。最小转矩由0.61减小到0.53 dN。m为NR;从0.23 dN增加到0.49 dN。在ENR 25和0.07至0.34 dN之间。我要50欧元。实验还发现,TESPT作为NR的内增塑剂,提高了二氧化硅的分散程度。据推测,对于enr, TESPT充当了一个额外的交联剂,其更明显地降低了二氧化硅的分散程度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of TESPT-Silane Coupling Agent on Torque Properties and Degree of Filler Dispersion of Silica Filled Natural Rubber and Epoxidized Natural Rubbers Compounds
The effect of the addition of a bis(triethoxysilylpropyl) tetra sulphide or TESPT-silane coupling agent on torque properties and degree of filler dispersion of silica-filled compounds of natural rubber (NR), epoxidized natural rubbers with 25% mole of epoxidation (ENR 25) and epoxidized natural rubbers with 50% mole of epoxidation (ENR 50) were investigated. All the rubbers were filled by silica filler at a fixed loading (30.0 parts per hundred rubber, phr) and the TESPT was added to each silica-filled rubbers compounds at 1.0phr. It was found that TESPT affected the torque properties of all the silica-filled rubbers compounds. The TESPT decreased the minimum torque of NR system but increased the minimum torque of ENRs systems and maximum and torque differences of the all rubbers systems. The minimum torque was decreased from 0.61 to 0.53 dN.m for NR; were increased from 0.23 to 0.49 dN.m for ENR 25 and from 0.07 to 0.34 dN.m for ENR 50.It was also found that the TESPT acted as an internal plasticizer for NR which improved the degree of silica dispersion. Presumably, for the ENRs, the TESPT acted as an additional cross linker with a more pronouncedly which poorer the degree of silica dispersion.
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