Starch-polyvinyl alcohol dual-degradationplastic film
A polyvinyl alcohol and plastic film technology, applied in the field of film production, can solve the problems of poor water resistance, slow degradation speed, insoluble, etc., and achieves the effect of solving the problem of white pollution, being beneficial to industrial production, and having a simple production process.
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Embodiment 1
[0017] 50 parts of starch, 15 parts of polyvinyl alcohol, 5 parts of artemisia gum, 2 parts of hydroxypropyl cellulose, 5 parts of pullulan, 3 parts of nano silicon dioxide, 5 parts of zinc stearate, 4 parts of oxidized polyethylene wax 2 parts, ethyl silicone oil 2 parts, calcium carbonate 3 parts, glutaraldehyde 4 parts, stearyl alcohol 3 parts.
Embodiment 2
[0019] 60 parts of starch, 20 parts of polyvinyl alcohol, 7 parts of artemisia gum, 5 parts of hydroxypropyl cellulose, 7 parts of pullulan, 4 parts of nano silicon dioxide, 7 parts of zinc stearate, 6 parts of oxidized polyethylene wax Parts, 5 parts of ethyl silicone oil, 4 parts of calcium carbonate, 7 parts of glutaraldehyde, 4 parts of stearyl alcohol.
Embodiment 3
[0021] 65 parts of starch, 30 parts of polyvinyl alcohol, 10 parts of artemisia gum, 8 parts of hydroxypropyl cellulose, 10 parts of pullulan, 6 parts of nano silicon dioxide, 10 parts of zinc stearate, 8 parts of oxidized polyethylene wax Parts, 7 parts of ethyl silicone oil, 5 parts of calcium carbonate, 10 parts of glutaraldehyde, 5 parts of stearyl alcohol.
[0022] The starch used is one of corn starch, wheat starch, oat starch, barley starch, tapioca starch, potato starch, buckwheat starch and soybean flour.
[0023] The particle size of the used nano silicon dioxide is 20-100nm.
[0024] Adopt the raw material formula of embodiment 1-3 to prepare the operation steps of starch-polyvinyl alcohol double degradable plastic film as follows:
[0025] Step a: put starch, carboxypropyl cellulose, glutaraldehyde, 1 / 3-1 / 2 oxidized polyethylene wax and 1 / 4-1 / 3 polyvinyl alcohol into an oven to dry, and then The biodegradable masterbatch is obtained after twin-screw extruder extr...
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