Low-density foaming BMC material and preparation method thereof
A low-density, foaming agent technology, applied in the field of low-density foamed BMC materials and its preparation, can solve the problems of reducing BMC, expensive, difficult to disperse fillers, etc., and achieve the goal of reducing density, reducing material costs, and reducing material costs Effect
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Embodiment 1
[0043] A low-density foamed BMC material, the raw material components by weight are as follows: 70 parts of unsaturated resin LY-S29802, 1 part of thermal expansion microspheres, 0.2 parts of AC foaming agent, 0.2 parts of OBSH foaming agent, 30 parts of low shrinkage additives , 0.85 parts of polymerization inhibitor, 1.2 parts of wetting and dispersing agent, 4.5 parts of color paste, 1.5 parts of thickener, 1.1 parts of curing agent, 4.5 parts of release agent, 100 parts of aluminum hydroxide, 50 parts of calcium bicarbonate, 60 parts 6mm non-alkali glass fiber.
[0044] The preparation steps of the above-mentioned low-density foamed BMC material are as follows:
[0045] (1) Add the heat-expandable microspheres and foaming agent into the mixing tank equipped with unsaturated resin according to the formula ratio, fully stir in the high-speed shear mixer, control the rotating speed at 1000rpm, and stir for 8 minutes;
[0046] (2) Add low-shrinkage additives, polymerization i...
Embodiment 2
[0054]A low-density foamed BMC material, the raw material components by weight are as follows: 65 parts of unsaturated resin LY-S29802, 1.5 parts of thermal expansion microspheres, 0.25 parts of AC foaming agent, 0.25 parts of OBSH foaming agent, 35 parts of low shrinkage additives , 0.7 parts of polymerization inhibitor, 1.5 parts of wetting and dispersing agent, 4 parts of color paste, 1.5 parts of thickener, 1 part of curing agent, 4 parts of release agent, 120 parts of aluminum hydroxide, 70 parts of calcium bicarbonate, 55 parts 6mm non-alkali glass fiber.
[0055] The preparation steps of the above-mentioned low-density foamed BMC material are as follows:
[0056] (1) Add the pre-treated heat-expandable microspheres and foaming agent according to the formula ratio into the mixing tank equipped with unsaturated resin, fully stir in the high-speed shear mixer, control the rotating speed at 1000rpm, and stir for 5 minutes;
[0057] (2) Add low-shrinkage additives, polymeri...
Embodiment 3
[0065] A low-density foamed BMC material, the raw material components by weight are as follows: 70 parts of unsaturated resin LY-S29802, 1.5 parts of thermal expansion microspheres, 0.35 parts of AC foaming agent, 0.35 parts of OBSH foaming agent, 30 parts of low shrinkage additives , 0.9 parts of polymerization inhibitor, 1 part of wetting and dispersing agent, 4.5 parts of color paste, 1 part of thickener, 1.1 parts of curing agent, 4.5 parts of release agent, 120 parts of aluminum hydroxide, 50 parts of calcium bicarbonate, 20 parts 6mm non-alkali glass fiber.
[0066] The preparation steps of the above-mentioned low-density foamed BMC material are as follows:
[0067] (1) Add the heat-expandable microspheres and foaming agent into the mixing tank equipped with unsaturated resin according to the formula ratio, fully stir in the high-speed shear mixer, control the rotating speed at 1000rpm, and stir for 8 minutes;
[0068] (2) Add low-shrinkage additives, polymerization inh...
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