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.

Inactive Publication Date: 2020-05-19
MIRACLL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, matte masterbatches are generally rigid plastic products such as ABS and H I PS, which are in a glass state at room temperature and cannot move, and have no hydrophilic groups to play a role in ventilation, and this type of plastic has certain odor

Method used

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  • Ultrahigh moisture-permeable matte thermoplastic polyurethane composition and preparation method thereof
  • Ultrahigh moisture-permeable matte thermoplastic polyurethane composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention relates to an ultrahigh moisture-permeable matte thermoplastic polyurethane composition and a preparation method thereof. The polyether soft segment in the TPEE belongs to a hydrophilicgroup and can play a role in ventilation, TPEE products with different hardness can be used according to the requirement of a matte surface, the mechanical property of the composition of the TPEE andTPU is better, and higher water pressure can be kept; a porous material zeolite is added to provide a porous channel, the problem of strength loss caused by zeolite can be improved by adding TPEE, theobtained composition TPU film is also a non-porous film, and only the zeolite forms a channel in the film; micropores cannot be directly formed in the surface of the film; however, by virtue of the used moisture-permeable TPU, the water vapor molecules can enter the film, so that the porous structure of the zeolite powder in the film becomes a channel for the water vapor molecules to quickly passthrough, the water vapor is favorably transmitted from one side to the other side, and the moisture permeability of the non-porous film is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of moisture-permeable materials, in particular to an ultra-high moisture-permeable matte thermoplastic polyurethane composition and a preparation method thereof. Background technique [0002] The preparation of moisture-permeable materials is generally divided into two methods, one is a microporous structure, and the other is a non-porous structure. The principle of the microporous type is that the pore diameter of the micropore is larger than the water vapor molecule and smaller than the diameter of the water drop, so as to play the role of waterproof and moisture permeability; and the principle of the non-porous structure is to rely on the hydrophilic group in its molecular structure to play a role. breathable effect. The principle of moisture-permeable TPU is non-porous moisture-permeable, which relies on the hydrophilic groups in its molecular structure and the different air pressures on both sides of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L67/00C08K7/26
CPCC08L75/08C08L2207/04C08L67/00C08K7/26
Inventor 由可锦王建刚宋红玮柳群杰王娜
Owner MIRACLL CHEM
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