Degradable classification garbage bag and preparation method thereof
A garbage bag and biodegradable technology, applied in the field of plastic products, can solve the problems of polluting the environment, harmful smoke and toxic gases, polluted soil, etc., and achieve the effects of high frost resistance stability, good aging resistance, and strong phase separation resistance
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Embodiment 1
[0037] In this embodiment, the degradable sorting garbage bag is composed of the following components in parts by weight: 60 parts of modified starch, 20 parts of plastic resin, 2 parts of heat stabilizer, 6 parts of biodegradable additive, 4 parts of coupling agent, 4 parts of pigment, 1 part of toughening agent, 2 parts of filler, 0.4 part of antistatic agent, 0.6 part of wear-resistant agent.
[0038] Wherein, the original starch is composed of potato starch and corn starch with a weight ratio of 1:2, and the crosslinking agent is phosphorus oxychloride.
[0039] Described modified starch is prepared by following preparation method:
[0040] S1: Prepare a starch slurry with a concentration of 10%-20%, add the original starch and water of the corresponding parts by weight to the mixer to disperse, control the rotation speed at 1500-1800r / min, heat to 75-80°C, and continue stirring for 30-45min, A starch slurry with a concentration of 10%-20% is obtained;
[0041] S2: Cool ...
Embodiment 2
[0049] In this embodiment, the degradable sorting garbage bag is composed of the following components in parts by weight: 70 parts of modified starch, 10 parts of plastic resin, 2 parts of heat stabilizer, 6 parts of biodegradable additive, 4 parts of coupling agent, 4 parts of pigment, 1 part of toughening agent, 2 parts of filler, 0.4 part of antistatic agent, 0.6 part of wear-resistant agent.
[0050] Wherein, the original starch is tapioca starch, and the crosslinking agent is sodium trimetaphosphate.
[0051] The preparation method of the modified starch and the degradable sorting garbage bag in this embodiment is the same as that in Embodiment 1, and will not be repeated here.
[0052] Prepare degradable classified garbage bags according to the above method, and carry out soil burial test on them. After 80 days, the garbage bags have been degraded, the thickness of the garbage bags has decreased from 0.03mm to 0.02mm, and the tensile strength has decreased from 22.3MPa t...
Embodiment 3
[0054] In this embodiment, the degradable sorting garbage bag is composed of the following components in parts by weight: 55.6 parts of modified starch, 20 parts of plastic resin, 2 parts of heat stabilizer, 8 parts of biodegradable additives, 4 parts of coupling agent, 6 parts of pigment, 1.5 parts of toughening agent, 2 parts of filler, 0.4 part of antistatic agent, 0.5 part of wear-resistant agent.
[0055] Wherein, the original starch is composed of tapioca starch and mung bean starch with a weight ratio of 3:5, and the crosslinking agent is sodium trimetaphosphate.
[0056] The preparation method of the modified starch and the degradable sorting garbage bag in this embodiment is the same as that in Embodiment 1, and will not be repeated here.
[0057] Prepare degradable classified garbage bags according to the above method, and carry out soil burial test on them. After 55 days, the garbage bags have been degraded, the thickness of the garbage bags has decreased from 0.03m...
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