Global mold plastic, preparing method and uses thereof
A technology of mass molding compound and inorganic filler, which is applied in the field of materials to achieve the effect of compact products and high mechanical strength
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Embodiment 1
[0026] 13.5 parts of ortho-phthalic unsaturated polyester (P17) produced by Jinling DSM Resin Co., Ltd., 9.1 parts of anti-shrinkage agent (H892) produced by Jinling DSM Resin Co., Ltd., 0.3 parts of tert-butyl peroxybenzoate , 0.18 parts of 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane, and 0.04 parts of magnesium oxide were uniformly mixed in a high-speed mixer to obtain a resin paste. In addition, 57 parts of calcium carbonate with a median particle size of 1.5 μm, 6.3 parts of calcium carbonate with a median diameter of 10 μm, 0.25 parts of calcium stearate, and 0.45 parts of zinc stearate were mixed uniformly in a kneader, and the previously prepared resin was added. paste, after mixing, add 14.1 parts of chopped glass fibers with a length of 6 mm, and knead for 8 minutes to obtain a BMC bulk molding compound. The BMC material prepared in this way is used to inject the vehicle light reflector substrate on the injection molding machine, the mold is heated by steam, ...
Embodiment 2
[0028] Change the median particle size of two kinds of calcium carbonate into 3 μm and 9 μm, all the other are all the same as embodiment 1. As a result, the heat distortion temperature is greater than 210°C, the bending strength is 74Mpa, and the impact strength is 14KJ / m 2 .
Embodiment 3
[0030] 12.6 parts of ortho-phthalic unsaturated polyester (P17) produced by Jinling DSM Resin Co., Ltd., 9.3 parts of anti-shrinkage agent (H892) produced by Jinling DSM Resin Co., Ltd., 0.2 part of tert-butyl peroxybenzoate , 0.20 parts of 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane, 0.08 parts of magnesium oxide, and 0.6 parts of styrene were mixed uniformly in a high-speed mixer to obtain a resin paste . In addition, 43 parts of calcium carbonate with a median particle size of 2.5 μm, 21 parts of calcium carbonate with a median diameter of 11 μm, 0.25 parts of calcium stearate, and 0.6 parts of zinc stearate were mixed uniformly in a kneader, and the previously prepared resin was added. paste, after mixing, add 13.5 parts of chopped glass fibers with a length of 6 mm, and knead for 8 minutes to obtain a BMC bulk molding compound. The BMC material prepared in this way is used to inject the car light reflector substrate on the injection molding machine, the mold is ...
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