Low-odor and high-wear-resistance polyethylene glycol terephthalate composition and preparation method thereof
A technology of polyethylene terephthalate and polybutylene terephthalate, applied in the field of low-odor, high-abrasion polyethylene terephthalate composition and its preparation, can solve the problem of Polyethylene terephthalate application restrictions, poor corona resistance and other problems, to achieve the effect of avoiding serious decline in the performance of the composition, excellent mechanical properties, and uniform plasticization
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[0032] Preparation of odor adsorption masterbatch: 100 parts of high-density polyethylene, 5 parts of hydrophobic diatomaceous earth, 10 parts of hydrophobic activated carbon, 5 parts of needle-shaped zeolite molecular sieve, 10 parts of zinc ricinoleate, 5 parts of nano-silica, hard 1 part of calcium fatty acid and 5 parts of melamine were uniformly mixed, and then extruded and granulated in a twin-screw extruder to obtain odor-absorbing masterbatches. Among them, high-density polyethylene has a crystallinity of 85% and a number average molecular weight of 250,000.
[0033] The melt index of polyethylene terephthalate is 25-28g / 10min; the melt index of polybutylene terephthalate is 28-30g / 10min.
[0034] The anti-wear agent is mixed with molybdenum disilicide and silicon carbide in a weight ratio of 1:15.
Embodiment 1
[0036] 70 parts of polyethylene terephthalate, 1 part of polybutylene terephthalate, 1 part of maleic anhydride, 3 parts of odor absorption masterbatch, 0.5 parts of anti-wear agent, 1 part of silicone powder, Add 0.5 parts of antioxidant 1010 and 0.5 parts of antioxidant 168 into a high-speed mixer, stir at a high speed, mix until uniform, then add to a twin-screw extruder, and mix 30 parts of polypyromellitic imide modified glass fibers from The glass fiber is added into the mouth, melted and extruded, and then granulated to obtain a polyethylene terephthalate composition with low odor, low emission and high wear resistance.
[0037] The temperature of the first zone of the twin-screw extruder is 180°C, the temperature of the second zone is 180°C, the temperature of the third zone is 190°C, the temperature of the fourth zone is 210°C, the temperature of the fifth zone is 230°C, and the temperature of the sixth zone is 245°C; The rotational speed of the twin-screw main engine...
Embodiment 2
[0039] 54 parts of polyethylene terephthalate, 2 parts of polybutylene terephthalate, 2 parts of maleic anhydride, 1 part of odor absorption masterbatch, 0.2 part of wear-resistant agent, 0.2 part of paraffin, 0.1 part Antioxidant 1010 and 0.1 part of antioxidant 168 were added to a high-speed mixer, stirred at a high speed, mixed until uniform, then added to a twin-screw extruder, and 30 parts of polypyromellitic imide modified glass fibers were made from glass fiber Orally added, melted and extruded, then granulated to obtain a polyethylene terephthalate composition with low odor, low emission and high wear resistance.
[0040] The temperature of the first zone of the twin-screw extruder is 190°C, the temperature of the second zone is 190°C, the temperature of the third zone is 200°C, the temperature of the fourth zone is 220°C, the temperature of the fifth zone is 300°C, and the temperature of the sixth zone is 300°C; The rotational speed of the twin-screw main engine is 50...
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