Preparation method of easily-degradable packing material
A packaging material and easy-to-degrade technology, which is applied in the field of preparation of easily-degradable packaging materials, can solve the problems of difficult-to-degrade polymer packaging materials and pollution, and achieve the effects of improving degradable performance, environmental friendliness, and reducing degradation time
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[0015] Example one
[0016] A preparation method of easily degradable packaging material includes the following steps:
[0017] 1) Calcium carbonate and montmorillonite mixed ball milled to an average particle size of 200nm to obtain filler mixed powder; in parts by weight, the distribution ratio of each component is: calcium carbonate 70 parts, montmorillonite 30 parts;
[0018] 2) Take step 1) and mix the prepared filler mixed powder with lignocellulose and iron stearate to obtain modified mixed powder; in parts by weight, the distribution ratio of each component is: 28 parts of filler mixed powder and 12 parts of lignocellulose , 8 parts of iron stearate;
[0019] 3) The modified mixed powder prepared in step 2) is mixed with polypropylene in a weight ratio of 1:3, and placed in a screw extruder for extrusion and granulation. The extruder has an extrusion working temperature of 165℃-260 ℃.
Example Embodiment
[0020] Example two
[0021] A preparation method of easily degradable packaging material includes the following steps:
[0022] 1) Calcium carbonate and montmorillonite mixed ball milled to an average particle size of 500nm to obtain filler mixed powder; in parts by weight, the distribution ratio of each component is: calcium carbonate 70 parts, montmorillonite 30 parts;
[0023] 2) Take step 1) and mix the prepared filler mixed powder with lignocellulose and iron stearate to obtain modified mixed powder; in parts by weight, the distribution ratio of each component is: 25 parts of filler mixed powder and 8 parts of lignocellulose , 6 parts of iron stearate;
[0024] 3) The modified mixed powder prepared in step 2) is mixed with polypropylene in a weight ratio of 1:3-5, and placed in a screw extruder for extrusion granulation. The working temperature of the extruder is 200°C-230 ℃.
Example Embodiment
[0025] Example three
[0026] A preparation method of easily degradable packaging material includes the following steps:
[0027] 1) Calcium carbonate and montmorillonite mixed ball milled to an average particle size of 500nm to obtain filler mixed powder; in parts by weight, the distribution ratio of each component is: calcium carbonate 70 parts, montmorillonite 30 parts;
[0028] 2) Take step 1) and mix the prepared filler mixed powder with lignocellulose and iron stearate to obtain modified mixed powder; in parts by weight, the distribution ratio of each component is: 25 parts of filler mixed powder and 8 parts of lignocellulose , 6 parts of iron stearate;
[0029] 3) The modified mixed powder prepared in step 2) is mixed with polypropylene in a weight ratio of 1:5, and placed in a screw extruder for extrusion granulation, and the working temperature of the extruder is 200°C-230°C.
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