Polymer section and preparation method thereof
A technology of polymers and profiles, applied in the field of profiles, to achieve good water resistance and strength, high recyclability, and high compressive strength
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Embodiment 1
[0019] In the present embodiment, the polymer profile is carried out according to the following steps:
[0020] ①Crush the recovered PU and PVC luggage leather waste into 3-8mm, and remove metal objects such as iron nails through magnetic separation to obtain the main material of the polymer profile; in the main material, the mass content of PU is > 0% and <100%;
[0021] ② Take 40 parts by weight of the main material of the polymer profile in step ①, then add 25 parts by weight of PVC resin, mix well in a strong mixer, then add 1.0 parts by weight of maleic anhydride, 1.0 parts by weight of EVA, stearin 1.5 parts by weight of acid and 1.5 parts by weight of liquid paraffin, continue to mix in an intensive mixer to obtain a uniform mixture;
[0022] ③Add the homogeneous mixture in step ② into the granulator, and granulate at 120°C to obtain granules of polymer profiles;
[0023] ④ Add the granules in step ③ into a twin-screw extruder, and extrude at 170°C to obtain a polymer...
Embodiment 2
[0031] ①Crush the recovered PU and PVC luggage leather waste into 4-8mm, and remove metal objects such as iron nails through magnetic separation to obtain the main material of the polymer profile; in the main material, the mass content of PU is > 0% and <100%;
[0032] ② Take 60 parts by weight of the main material of the polymer profile in step ①, then add 45 parts by weight of high-density polyethylene resin, mix well in a strong mixer, and then add 1.5 parts by weight of titanate and 2.0 parts by weight of EVA in sequence , 2.0 parts by weight of stearic acid and 2 parts by weight of liquid paraffin, continue to mix in a strong mixer to obtain a uniform mixture;
[0033] ③ Add the homogeneous mixture in step ② to a granulator, and granulate at 140°C to obtain granules of polymer profiles;
[0034] ④ Add the particles in step ③ to a twin-screw extruder, and extrude them at 180°C to obtain a polymer profile;
[0035] 5. Printing, embossing or pasting on the outer surface of...
Embodiment 3 Embodiment 5
[0037] The preparation steps are the same as in Example 2, and the parts by weight of each raw material are shown in Table 1.
[0038] The parts by weight of each raw material in the table 1 embodiment three-embodiment five
[0039]
[0040] Note: The PE resin mentioned in Table 1 is low density polyethylene resin, medium density polyethylene resin or high density polyethylene resin; the said PP is homopolymer polypropylene resin or copolymer polypropylene resin.
[0041] In summary, the present invention makes full use of the PU and PVC leather scraps produced in the production process of luggage manufacturing enterprises, not only solves the problem of environmental pollution, but also prepares polymer profiles that can be used in fields such as construction, packaging, transportation and decoration, It saves a lot of natural resources and is a green and environmentally friendly polymer profile.
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