Degradable plastic with good heat resistance and preparation method thereof
A technology for degrading plastics and heat resistance, applied in the field of degradable plastics and its preparation, can solve the problems of mechanical strength, electrical insulation and chemical stability performance requirements, etc., to achieve improved thermal stability, strong flexibility, resistance The effect of high tensile strength
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[0052] The second aspect of the present invention provides a method for preparing a degradable plastic with good heat resistance, and the specific steps include:
[0053] S1. In parts by weight, weigh 50-85 parts of base plastic, 2-8 parts of plasticizer, 5-12 parts of first filler, 3-10 parts of degradation agent, 0.5-1 part of stabilizer, and 0.8 parts of wetting agent - 2 parts are sent to a high-speed mixer for mixing for 5-10 hours, continue to add 1-3 parts of the second filler, and mix the raw materials for 1-2 hours to obtain a mixture;
[0054] S2. Send the mixed material obtained in S1 into the internal mixer for internal mixing and kneading to obtain the rubber compound;
[0055] S3. Send the rubber material obtained in S2 into a two-roll mill for mixing to obtain a molten material;
[0056] S4. The molten material obtained in S3 is fed into an extruder for plasticization, and then formed by a four-roller calender and shaped by a cooling wheel to obtain a shaped pl...
Embodiment 1
[0060] A degradable plastic with good heat resistance, its raw materials in parts by weight include: 84 parts of base plastic, 6 parts of plasticizer, 7 parts of degradation agent, 10 parts of first filler, 0.8 part of stabilizer, 1.2 parts of wetting agent Parts, 2 parts of the second filler.
[0061] The base plastic is PPO, the average molecular weight of PPO is 40000, purchased from Dongguan Guangyu Plastic Raw Material Co., Ltd.
[0062] The plasticizer is dimethyl phthalate and dibutyl oxalate, and the weight ratio of dimethyl phthalate and dibutyl oxalate is 3:1. Dimethyl phthalate was purchased from Guangzhou Liqing Trading Co., Ltd., with a CAS number of 131-11-3; dibutyl oxalate was purchased from Jinan Huifengda Chemical Co., Ltd., with a CAS number of 2050-60-4.
[0063] The degradation agent is PLA, PBS and PBAT, and the weight ratio of PLA, PBS and PBAT is 1:1:2.
[0064] The first filler is diatomite with a particle size of 35 μm, purchased from Lingshou Count...
Embodiment 2
[0075] A degradable plastic with good heat resistance, its raw materials include: 84 parts of base plastic, 6 parts of plasticizer, 7 parts of degradation agent, 10 parts of first filler, 0.8 parts of stabilizer, 1.2 parts of wetting agent, second Filling 2 parts.
[0076] The base plastic is PPO, and the average molecular weight of PPO is 40000.
[0077] The plasticizer is dimethyl phthalate and dibutyl oxalate, and the weight ratio of dimethyl phthalate and dibutyl oxalate is 3:1.
[0078] The degradation agent is PLA, PBS and PBAT, and the weight ratio of PLA, PBS and PBAT is 1:1:2.
[0079] The first filler is diatomite with a particle size of 74 μm, purchased from Jinan Ruifeng Chemical Co., Ltd.
[0080] The second filler is diatomite with a particle size of 74 μm, purchased from Jinan Ruifeng Chemical Co., Ltd.
[0081] The emollient is glyceryl laurate.
[0082] The stabilizer is 2-(2'-hydroxyl-3',5'-di-tert-phenyl)-5-chlorinated benzotriazole.
[0083] The specif...
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