Degradable polyethylene modified material and preparation method thereof
A technology of polyethylene modification and polyethylene, which is applied in the field of degradable polyethylene modified materials and its preparation, can solve the problems of cost increase and water-absorbing core layer, and achieve pollution-free, high tensile strength and easy degradation Effect
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[0021] Example 1: Preparation method of a degradable polyethylene modified material
[0022] A preparation method of a degradable polyethylene modified material includes the following steps:
[0023] , Add high-density polyethylene, calcium carbonate, konjac glucomannan, corn starch and foaming agent into the mixer and mix well,
[0024] To obtain a polyethylene mixture; the high-density polyethylene, calcium carbonate, konjac glucomannan, corn starch and foaming agent and polyethylene
[0025] The weight percentages of the mixture are 49.8%, 30%, 10%, 10% and 0.2% respectively;
[0026] 2. Add the polyethylene mixture obtained in step 1 into a twin-screw extruder with a rotation speed of 300-350 rpm for mixing,
[0027] Set the extrusion temperature of the first and second sections of the twin-screw extruder to 180°C, and set the extrusion temperature of the other sections to 200°C;
[0028] 3. Cool the material extruded in step 2 to room temperature and cut into pellets.
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[0030] Example 2: A preparation method of a degradable polyethylene modified material
[0031] A preparation method of a degradable polyethylene modified material includes the following steps:
[0032] , Add high-density polyethylene, calcium carbonate, konjac glucomannan, corn starch and foaming agent into the mixer and mix well,
[0033] To obtain a polyethylene mixture; the polyethylene, calcium carbonate, konjac glucomannan, corn starch and foaming agent and polyethylene mixture
[0034] The weight percentages are 69.8%, 20%, 9%, 1% and 0.2% respectively;
[0035] 2. Add the polyethylene mixture obtained in step 1 into a twin-screw extruder with a rotation speed of 300 to 350 revolutions per minute for mixing,
[0036] The extrusion temperature of the first and second sections of the twin-screw extruder is 170°C, and the extrusion temperature of the other sections is 210°C;
[0037] 3. Cool the material extruded in step 2 to room temperature and cut into pellets.
[0038] ...
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