Ultrahigh moisture-permeable matte thermoplastic polyurethane composition and preparation method thereof
A thermoplastic polyurethane and composition technology, applied in the field of ultra-high moisture-permeable matte thermoplastic polyurethane composition and its preparation, can solve the problems of no hydrophilic group, inability to exercise, etc.
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Embodiment 1
[0023] A preparation method of an ultra-high moisture-permeable matte thermoplastic polyurethane composition, the steps are as follows:
[0024] (1) Preparation of TPU
[0025] Take 169.5g of PEG2000, 29.2g of BDO and 101.3g of MDI, and use a twin-screw extruder to process and shape it at one time. The temperature in the reaction zone is 200°C. After the reaction, it is pelletized under water at 40°C;
[0026] (2) Preparation of moisture-permeable matte masterbatch
[0027] After drying TPEE and zeolite powder at 90°C for 5 hours, granulate through a twin-screw extruder at a processing temperature of 180°C to obtain a moisture-permeable matte masterbatch; the weight ratio of TPEE and zeolite powder is 75:25 ;
[0028] (3) Mix 300 g of thermoplastic polyurethane elastomer TPU in step (1) with 30 g of moisture-permeable matte masterbatch in step (2) to prepare an ultra-high moisture-permeable matte thermoplastic polyurethane composition.
Embodiment 2
[0030] A preparation method of an ultra-high moisture-permeable matte thermoplastic polyurethane composition, the steps are as follows:
[0031] (1) Preparation of TPU
[0032] Take 169.5g of PEG2000, 29.2g of BDO and 101.3g of MDI, and use a twin-screw extruder to process and shape it at one time. The temperature in the reaction zone is 200°C. After the reaction, it is pelletized under water at 40°C;
[0033] (2) Preparation of moisture-permeable matte masterbatch
[0034] After drying TPEE and zeolite powder at 90°C for 5 hours, granulate through a twin-screw extruder at a processing temperature of 180°C to obtain a moisture-permeable matte masterbatch; the weight ratio of TPEE and zeolite powder is 55:45 ;
[0035] (3) Mix 300 g of thermoplastic polyurethane elastomer TPU in step (1) with 30 g of moisture-permeable matte masterbatch in step (2) to prepare an ultra-high moisture-permeable matte thermoplastic polyurethane composition.
Embodiment 3
[0037] A preparation method of an ultra-high moisture-permeable matte thermoplastic polyurethane composition, the steps are as follows:
[0038] (1) Preparation of TPU
[0039] Take 174g of PEG2000, 101.5g of PDO and 24.5g of MDI, and use a twin-screw extruder to process and shape it at one time. The temperature in the reaction zone is 200°C. After the reaction, it is pelletized under water at 40°C;
[0040] (2) Preparation of moisture-permeable matte masterbatch
[0041] After drying TPEE and zeolite powder at 90°C for 5 hours, granulate through a twin-screw extruder at a processing temperature of 180°C to obtain a moisture-permeable matte masterbatch; the weight ratio of TPEE and zeolite powder is 75:25 ;
[0042] (3) Mix 300 g of thermoplastic polyurethane elastomer TPU in step (1) with 30 g of moisture-permeable matte masterbatch in step (2) to prepare an ultra-high moisture-permeable matte thermoplastic polyurethane composition.
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