A degradable environmental protection garbage bag and its production method
A garbage bag and environmental protection technology, applied in the field of degradable environmentally friendly garbage bags and their production, can solve the problems of non-degradable debris, poor mechanical and mechanical properties, soil environmental pollution, etc. The effect of excellent degradation performance and high economic value
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Embodiment 1
[0025] A degradable environmental protection garbage bag is characterized in that it is made of the following raw materials in parts by weight: 40 parts of poly-terminated carboxyl polylactic acid hydrogenated benzoin ester, 35 parts of polyester urea resin based on polyurethane, 1 part of calcium carbonate, silane coupling 0.2 parts of agent KH5500, 0.5 parts of stearic acid, 0.3 parts of calcium stearate, and 3 parts of hydroxyl-terminated hyperbranched polyester.
[0026] The preparation method of the polycarboxy-terminated polylactic acid hydrogenated benzoin comprises the following steps: adding carboxyl-terminated polylactic acid, hydrogenated benzoin, and tetrabutyl titanate into N,N-dimethylformamide, stirring at 105°C After 60 minutes, the reaction solution was obtained, and then the reaction solution was transferred to the autoclave, and the air in the autoclave was replaced with nitrogen, then the reaction was stirred and reacted at 130°C under normal pressure for 3 ...
Embodiment 2
[0030] A degradable environmental protection garbage bag is characterized in that it is made of the following raw materials in parts by weight: 43 parts of poly-terminated carboxyl polylactic acid hydrogenated benzoin ester, 37 parts of polyester urea resin based on polyurethane, 1.5 parts of talcum powder, silane coupling 0.3 parts of agent KH5600, 0.6 parts of cinnamic acid, 0.5 parts of magnesium stearate, and 3.5 parts of hydroxyl-terminated hyperbranched polyester.
[0031]The preparation method of polycarboxy-terminated polylactic acid hydrogenated benzoin comprises the following steps: adding carboxyl-terminated polylactic acid, hydrogenated benzoin, and p-toluenesulfonic acid to N,N-dimethylacetamide, stirring at 110°C for 70 Minutes to obtain a reaction solution, then transfer the reaction solution to a high-pressure reactor, replace the air in the reactor with helium, then stir and react at 135°C under normal pressure for 3.5 hours, then reduce the pressure to 30Pa, a...
Embodiment 3
[0035] A degradable environmental protection garbage bag is characterized in that it is made of the following raw materials in parts by weight: 45 parts of polycarboxy-terminated polylactic acid hydrogenated benzoin ester, 40 parts of polyester urea resin based on polyurethane, 2 parts of barium sulfate, silane coupling 0.35 parts of agent KH5700, 1 part of arachidic acid, 0.7 parts of calcium stearate, and 4 parts of hydroxyl-terminated hyperbranched polyester.
[0036] The preparation method of polycarboxy-terminated polylactic acid hydrogenated benzoin comprises the following steps: adding carboxyl-terminated polylactic acid, hydrogenated benzoin, and antimony oxide into N-methylpyrrolidone, stirring at 115°C for 80 minutes to obtain a reaction solution, Then transfer the reaction solution to a high-pressure reaction kettle, replace the air in the kettle with neon gas, then stir and react at 140°C under normal pressure for 4 hours, then reduce the pressure to 35Pa, heat up t...
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