矽烷偶合劑改質丁腈橡膠之探討與研究

不同場合使用的工業橡膠製品常選擇碳黑(Carbon Black)作為補強材料，碳黑與生膠(Raw Gum)親和性相當好，不須特別改質;但白色和彩色膠料則常用陶土(Clay)，滑石粉(Talc)與二氧化矽(Silica)等淺色粉末當填料，其與生膠親和性不佳。且因碳黑來自於石油裂解衍生物，而白煙(SiO2)為天然礦物，以綠色材料為前提考量，故本研究主軸是以高分子材料NBR丁腈橡膠(Acrylonitrile butadiene rubber)作為基材，以白煙(SiO2)替代碳黑，藉由添加矽烷偶合劑在無機材料和高分子材料的複合體系中，期能透過物理和(或)化學作用把二者結合，亦或能通過物理和(或)化學反應，使二者親和性得到改善，發揮最大綜合性能，提升橡膠製品附加價值。主要探討矽烷偶合劑對於硫化膠之機械強度(硬度，抗張強度，伸長率，定伸強度)、耐磨特性、抵抗油品的能力、粉體分散度、混煉加工性等之影響。結果顯示矽烷偶合劑確實能提升橡膠機械強度、耐磨特性、粉體分散度與混煉加工性等。

關鍵字

矽烷偶合劑

並列摘要

Carbon black is often chosen as the reinforcing filler in the rubber industry for several purposes. The modification of carbon black is unnecessary due to its high affinity with raw gum. For white or colored compounds, white fillers like clay, talc, and silica are often used, but the affinity between the filler and raw gum is not satisfying. Carbon black is the derivative of petroleum products and white fillers are originally from natural ores. Considering that green materials have been gaining increasing attention, the main purpose in this study is to the silane coupling agents used in acrylonitrile butadiene rubber (NBR) with white fillers. In the composite of inorganic materials and polymers, silane coupling agents provide the interaction between filler and rubber via physical and/or chemical reaction. In this study, the use of silane coupling agents tends to enhance the affinity between the two materials and hence increases the added value of rubber products. The issues to be discussed are as follows: mechanical properties (hardness, tensile strength, elongation, modulus), wear resistance, oil resistance, dispersion of fillers, and processability. The results show that silane coupling agents have significant improvments in mechanical properties, wear resistance, dispersion of filler and processability.