Antistatic silica gel composition and preparation method thereof

Abstract

The invention relates to an antistatic silica gel composition which comprises the following components in percentage by weight: 45-80 percent of methyl vinyl gum, 15-50 percent of white carbon black, 1-4 percent of hydroxy silicone oil, 0.2-1.6 percent of hydrogen-contained silicone oil, 0.1-0.5 percent of demolding agent and 0.1-4 percent of antistatic agent, wherein the antistatic silica gel composition is prepared through the following steps of: proportionally adding the methyl vinyl gum, the hydroxy silicone oil, the hydrogen-contained silicone oil and the demolding agent into a vacuum kneader for kneading; then adding the white carbon black in batches and then adding the next batch of white carbon black after the last batch of white carbon black is fully agglomerated; after all the raw materials are agglomerated, opening nitrogen, introducing steam, heating and keeping the constant temperature for 1-2 hours at the high temperature of 160-170 DEG C; and then reducing the temperature, proportionally adding the antistatic agent in the temperature reducing process, stirring for 30 minutes to 1 hours, discharging after the temperature is reduced to 60-80 DEG C and then filtering through a rubber filter press to obtain the antistatic silica gel composition after a sizing is cooled. Thereby, the invention has good antistatic effect and can be widely used for working occasions with higher static requirements.

Description

Technical field [0001] The invention relates to an antistatic silica gel composition and a preparation method. Background technique [0002] With the technological advancement of the silica gel industry, the quality of domestic silica gel compositions has been greatly improved. At present, silica gel has been widely used in my country, with continuous growth in quantity and variety, and continuous expansion of application fields. my country has become the most potential silicone product. Market. However, many workplaces have higher requirements for static electricity. Under normal circumstances, to make silicone products have an anti-static effect, polyether fillers are generally added to the silicone. However, when polyether fillers are used, polyethers will decompose at high temperatures, and silica gel not only fails to obtain the ideal antistatic effect, but also reduces physical and mechanical properties, which is not conducive to market promotion. Summary of the invention ...

AI Technical Summary

Problems solved by technology

However, when polyether fillers are used, the polyether will decompose at high temperature, and the silica gel will not only fail to obtain the ideal antistatic effect, but also its physical and mechanical properties will decline, which is not conducive to market promotion.