Fluorosilicone processing technology: mixing--heat treatment--filtration--refining--vulcanization

Mix

Although fluorosilicone rubber is solid, it has high plasticity and does not require mastication. It can be directly mixed using an open mill or internal mixer.

heat treatment

The main purpose of heat treatment is to further combine the structure control agent with silica and to eliminate low molecular volatiles.

filter

For extruded products, calendered products, rubber-coated products, and diaphragm products, mechanical impurities and undispersed compound particles are one of the main factors leading to product quality problems. Therefore, the rubber used in the above products must be filtered.

Return to refining

After the rubber is parked, the gel content increases and the plasticity decreases, so it must be re-melted before use.

vulcanization

Fluorosilicone rubber is different from other ordinary rubbers in that vulcanization is completed in one stage and two stages. The short first-stage vulcanization time (1.5-15 minutes) can only make the product finalized; only after the second-stage vulcanization (3-6 hours) can complete vulcanization be achieved, and the physical properties of the vulcanized rubber can become stable.

Low pressure variable fluorosilicone compound