Study on Bound Rubber in Silicone Rubber Filled with Modified Ultrafine Mineral Powder

Abstract

Abstract The bound rubber measurement method was improved by ethylenediamine (NH 2 -CH 2 -CH 2 -NH 2 ) replacing ammonia (NH 3 ) as the basic agent. Using the new method, the influence of organic base on bound rubber content was investigated, the relation between bound rubber content and the mechanical properties of the silicone rubber filled with modified ultrafine mineral powder was studied, and the interaction between silicone rubber matrix and mineral filler was discussed. As a result, it is suggested that chemical interaction plays the main role in the bound rubber of silicone filled with modified ultrafine mineral powder.