(1) Basic requirements and procedures Formula design is the primary technical problem in the silicone industry, which is of great significance for improving product quality, and is the main way to obtain the required performance of silicone products. Reasonable formula, to ensure the performance of silicone products, rubber compound process performance and the best economic benefits, formula design should be valued by silicone companies and technicians. The formula design work should inherit the experience of the predecessors, be innovative in practice, and be verified by experiments.

(2) Basic theory of formula design The basic theory of formula design is correlation theory. There is a correlation between the formulation components and the rubber compound and the vulcanizate; the formulation components and material types, types and dosages have a decisive influence on the rubber compound and the vulcanizate; there is a correlation between the properties of the vulcanizate and the materials; There is a correlation between the properties of vulcanizates; the properties of vulcanizates and the processing conditions (opening, mixing, extrusion, calendering, vulcanization, molding, injection) on the performance. The above five correlation studies, which constitute the basic content of the silicone formula, have been tested and verified to achieve a reasonable formulation of technical and economic indicators.