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In the design of compression out of the rubber formula, the focus should be on the rubber to reduce the elastic recovery, reduce the mouth expansion rate of compression out.
(1) the rubber content should be low rubber content of 30% to 50% of the mixing rubber, press out performance is better, the surface of the pressed product is smooth. Add filler can reduce the rubber content, reduce the elastic deformation of the rubber. One of the most suitable fillers are high structural wear-resistant furnace black, fast pressure out of the black, semi-reinforced furnace black, calcium carbonate, magnesium carbonate, clay and so on.
(2)Matching with recycled rubberMatching with recycled rubber has the tendency to reduce the deformation of pressing out, accelerate the speed of pressing out, reduce the temperature of pressing out and reduce the scorching.
(3)Matching with slippery softenerMatching with slippery softener such as ointment, mineral oil, stearic acid, paraffin wax, paraffin oil, etc. has the effect of reducing the resistance of mouth shape, improving the speed of pressing out, and making the surface of semi-finished products smooth and so on. On the contrary, such as matching into the viscosity effect of rosin, asphalt, etc., will reduce the speed of the press out of the gum flow caused by congestion and other phenomena.
(1) the rubber content should be low rubber content of 30% to 50% of the mixing rubber, press out performance is better, the surface of the pressed product is smooth. Add filler can reduce the rubber content, reduce the elastic deformation of the rubber. One of the most suitable fillers are high structural wear-resistant furnace black, fast pressure out of the black, semi-reinforced furnace black, calcium carbonate, magnesium carbonate, clay and so on.
(2)Matching with recycled rubberMatching with recycled rubber has the tendency to reduce the deformation of pressing out, accelerate the speed of pressing out, reduce the temperature of pressing out and reduce the scorching.
(3)Matching with slippery softenerMatching with slippery softener such as ointment, mineral oil, stearic acid, paraffin wax, paraffin oil, etc. has the effect of reducing the resistance of mouth shape, improving the speed of pressing out, and making the surface of semi-finished products smooth and so on. On the contrary, such as matching into the viscosity effect of rosin, asphalt, etc., will reduce the speed of the press out of the gum flow caused by congestion and other phenomena.
