Polymethyl methacrylate composite material and preparation method thereof
A technology of polymethyl methacrylate and methyl methacrylate, which is applied in the field of polymethyl methacrylate composite materials and its preparation, can solve the problems of low hardness, poor impact performance, and general strength of polymethyl methacrylate, etc. problems, to achieve the effect of improving stretching, reducing crystallinity, and broadening the application range
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Embodiment 1
[0032] Weigh 100 parts of methyl methacrylate, 10 parts of N-phenylmaleimide, 1 part of diisononyl phthalate, 0.1 part of azobisisobutyronitrile, 0.5 part of melamine, 0.5 part of antioxidant Mix Agent 245 evenly, and degas the bubbles under vacuum for 30 minutes at 80°C to obtain a slurry with moderate viscosity. The slurry is sucked into the closed mold under negative pressure, and after the wetting is complete, it is kept at 40° C. for 12 hours to obtain a prepolymerized product. The pre-polymerized product was taken out from the mold, placed on a flat vulcanizer, kept at 100° C. for 3 hours, and cooled to room temperature to obtain a polymethyl methacrylate composite material.
Embodiment 2
[0034] Weigh 120 parts of methyl methacrylate, 20 parts of N-phenylmaleimide, 2 parts of diisononyl phthalate, 0.15 parts of azobisisobutyronitrile, 0.8 parts of melamine, 0.8 parts of antioxidant Mix Agent 245 evenly, and degas the bubbles under vacuum for 10 minutes at 85°C to obtain a slurry with moderate viscosity. The slurry is sucked into the closed mold under negative pressure, and after the wetting is complete, it is kept at 45° C. for 10 hours to obtain a prepolymerized product. The pre-polymerized product was taken out from the mold, placed on a flat vulcanizer, kept at 110° C. for 2 hours, and cooled to room temperature to obtain a polymethyl methacrylate composite material.
Embodiment 3
[0036] Weigh 150 parts of methyl methacrylate, 40 parts of N-phenylmaleimide, 3 parts of diisononyl phthalate, 0.2 parts of benzoyl peroxide, 1 part of melamine, and 1 part of antioxidant 245 to mix evenly, at 90°C, vacuum defoaming for 20 minutes to obtain a slurry with moderate viscosity. The slurry is sucked into the closed mold under negative pressure, and after the wetting is complete, it is kept at 50° C. for 6 hours to obtain a prepolymerized product. The pre-polymerized product was taken out from the mold, placed on a flat vulcanizer, kept at 120° C. for 2 hours, and cooled to room temperature to obtain a polymethyl methacrylate composite material.
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