Waterproof breathable antibacterial thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and elastomer technology, applied in the field of polymers, can solve the problems of not having both waterproof, breathable and antibacterial properties, and achieve the effect of improving air permeability and mechanical properties

Active Publication Date: 2015-11-25
DONGGUAN JIXIN POLYMER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the problem that thermoplastic elastomers in the prior art cannot have both waterproof, breathable and antibacterial properties, and improve their mechanical properties at the same time, the present invention provides a waterproof, breathable and antibacterial thermoplastic polyurethane elastomer and its preparation method

Method used

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  • Waterproof breathable antibacterial thermoplastic polyurethane elastomer and preparation method thereof
  • Waterproof breathable antibacterial thermoplastic polyurethane elastomer and preparation method thereof
  • Waterproof breathable antibacterial thermoplastic polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Preparation of nano-ZnO modified dihydroxy polydiphenylsiloxane:

[0059] Disperse nano-ZnO in dihydroxypolydiphenylsiloxane emulsion (wherein the mass ratio of nano-ZnO and dihydroxypolydiphenylsiloxane emulsion is 1:8), and ultrasonically disperse for 1.5h to obtain a dispersion Add the dispersion liquid into a closed container with a reflux condenser and a stirrer, then raise the temperature to 45°C, stir and reflux for 6 hours, and obtain nano-ZnO modified dihydroxy polydiphenylsiloxane;

[0060] (2) Preparation of thermoplastic polyurethane elastomer:

[0061] Add 45 parts of polymer polyol, 12 parts of 1,4-butanediol and 7 parts of hydroxyethyl acrylate into the container in sequence (wherein, m=4 in the fluorine-containing polyether diol, n 1 = 4, n 2 =5,n 3 =4, the mass ratio of fluorine-containing polyether diol to 1,4-butanediol adipate diol in the polymer polyol is 4:1), vacuumize at 1100r / min at 70°C to -0.3kPa , to obtain mixture A; after heating 35...

Embodiment 2

[0064] (1) Preparation of nano-ZnO modified dihydroxy polydiphenylsiloxane:

[0065] Dispersing nano-ZnO in dihydroxypolydiphenylsiloxane emulsion (wherein, the mass ratio of nano-ZnO and dihydroxypolydiphenylsiloxane emulsion is 1:10), and ultrasonically dispersing for 2 hours, to obtain a dispersion; Add the dispersion liquid into a closed container with a reflux condenser and a stirrer, then raise the temperature to 50 ° C, stir and reflux for 5 hours, and obtain nano-ZnO modified dihydroxy polydiphenylsiloxane;

[0066] (2) Preparation of thermoplastic polyurethane elastomer:

[0067] Add 47 parts of polymeric polyol, 13 parts of 1,4-butanediol and 8 parts of hydroxyethyl acrylate into the container in sequence (wherein, m=3 in the fluorine-containing polyether diol, n 1 = 3, n 2 = 3, n 3 =3, the mass ratio of fluorine-containing polyether diol to 1,4-butanediol adipate diol in the polymer polyol is 5:1), vacuumize at 1000r / min at 80°C to -0.2kPa , to obtain mixture A;...

Embodiment 3

[0070] (1) Preparation of nano-ZnO modified dihydroxy polydiphenylsiloxane:

[0071] Disperse nano-ZnO in dihydroxypolydiphenylsiloxane emulsion (wherein, the mass ratio of nano-ZnO and dihydroxypolydiphenylsiloxane emulsion is 1:6), and ultrasonically disperse for 1 hour to obtain a dispersion; Add the dispersion into a closed container with a reflux condenser and a stirrer, then raise the temperature to 40°C, stir and reflux for 8 hours to obtain nano-ZnO-modified dihydroxypolydiphenylsiloxane;

[0072] (2) Preparation of thermoplastic polyurethane elastomer:

[0073] Add 43 parts of polymeric polyol, 11 parts of 1,4-butanediol and 6 parts of hydroxyethyl acrylate into the container successively (wherein, m=6 in the fluorine-containing polyether diol, n 1 =6,n 2 =6,n 3=6, the mass ratio of fluorine-containing polyether diol to 1,4-butanediol adipate diol in the polymer polyol is 3:1), vacuumize at 1200r / min at 60°C to -0.4kPa , to obtain mixture A; after heating 33 parts...

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Abstract

The present invention provides a waterproof breathable antibacterial thermoplastic polyurethane elastomer and a preparation method thereof. The thermoplastic polyurethane elastomer is prepared from the following main components by weight: 40-50 parts of polymeric polyol, 30-40 parts of isophorone isocyanate, 10-15 parts of 1,4-butanediol, 10-15 parts of nano ZnO-modified dihydroxy polydiphenylsiloxane and 5-10 parts of hydroxyethyl acrylate. The present invention uses a mixture of fluorine-containing polyether glycol and adipic acid 1,4-butanediol adipate diol as the polymeric polyol; the synergic effect of the two improves the water and oil repellency of the target product; while dihydroxy polydiphenylsiloxane and hydroxyethyl acrylate supplemented with nano ZnO increase the antibacterial properties of the thermoplastic polyurethane elastomer, and endow the elastomer with good mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to a thermoplastic polyurethane elastomer and a preparation method thereof, in particular to a waterproof, breathable and antibacterial thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane (Thermoplastic Polyurethane, TPU) is a polymer material that can be melted by heating and can be dissolved by solvent. TPU molecules are linear, there is little crosslinking between molecules, and the glass transition temperature is low, so it has high strength, high elasticity and excellent wear resistance, oil resistance and low temperature resistance. [0003] There are two types of thermoplastic polyurethane elastomers: polyester type and polyether type. The white irregular spherical or columnar particles have a relative density of 1.10 to 1.25. The relative density of the polyether type is smaller than that of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/67C08G18/66C08G18/50C08G18/32C08G18/61C08K3/22
CPCC08G18/3221C08G18/5015C08G18/61C08G18/672C08G18/755C08K3/22C08K2003/2296C08K2201/011C08G18/6674
Inventor 何建雄王一良
Owner DONGGUAN JIXIN POLYMER SCI & TECH
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