Heat-resisting antibacterial thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and elastomer technology, applied in the field of thermoplastic elastomers, can solve the problems of TPU's poor antibacterial performance, affecting performance, and endangering health, achieving high bacterial killing rate, improving heat resistance, and good long-term performance Effect

Pending Publication Date: 2015-12-23
房小明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the TPU currently on the market has poor antibacterial performance. When used in water pipes and other fields, it is easy to breed bacteria and endanger health. The temperature of TPU generally does not exceed 80°C. It is applied to sanitary hose products. After soaking in water, it is prone to aging and cracking, which will affect its performance

Method used

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  • Heat-resisting antibacterial thermoplastic polyurethane elastomer and preparation method thereof
  • Heat-resisting antibacterial thermoplastic polyurethane elastomer and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] A heat-resistant and antibacterial thermoplastic polyurethane elastomer, the basic formula and weight ratio are: 40% polyester thermoplastic polyurethane, 10% polyphenylene ether, 5% chitin, 15% random copolymer polypropylene, saturated linear paraffin oil 28.5%, nano talc powder 1%, compound antioxidant 0.4%, EBS 0.1%.

[0041] The preparation technology of embodiment 1:

[0042] (1) Weigh the raw materials in the formula according to the weight ratio, add polyester thermoplastic polyurethane, polyphenylene ether, and random copolymerized polypropylene into the high mixer, stir for 1 hour, and mix well;

[0043] (2) Put the remaining other raw materials into the high mixer together with the raw materials mixed in step (1), stir for 10 minutes, and mix well;

[0044] (3) Put the raw materials mixed in step (2) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: set the temperature of the first zone of th...

Embodiment 2

[0046] A heat-resistant and antibacterial thermoplastic polyurethane elastomer, the basic formula and weight ratio are: polyether thermoplastic polyurethane 25%, polyphenylene sulfide 16%, silver-loaded antibacterial agent 12%, homopolypropylene 17%, naphthenic oil 20%, nano talc powder 5%, composite antioxidant 3%, silicone 2%.

[0047] The preparation technology of embodiment 2:

[0048] (1) Weigh the raw materials in the formula according to the weight ratio, add polyether thermoplastic polyurethane, polyphenylene sulfide, and homopolypropylene into the high mixer, stir for 2 hours, and mix well;

[0049] (2) Put the remaining other raw materials into the high mixer together with the raw materials mixed in step (1), stir for 40 minutes, and mix well;

[0050] (3) Put the raw materials mixed in step (2) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: set the temperature of the first zone of the twin-screw...

Embodiment 3

[0052] A heat-resistant and antibacterial thermoplastic polyurethane elastomer, the basic formula and weight ratio are: polyester thermoplastic polyurethane 32%, polyimide 20%, chitosan 5%, high-density polyethylene 15%, saturated linear alkanes Oil 25%, nano talc powder 1.5%, compound antioxidant 1%, erucamide 0.5%.

[0053] The preparation technology of embodiment 3:

[0054] (1) Weigh the raw materials in the formula according to the weight ratio, add polyester thermoplastic polyurethane, polyimide, and high-density polyethylene into the high-density mixer, stir for 1.5 hours, and mix well;

[0055] (2) Add the remaining other raw materials together with the raw materials mixed in step (1) into the high mixer, stir for 25 minutes, and mix well;

[0056] (3) Put the raw materials mixed in step (2) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: set the temperature of the first zone of the twin-screw extru...

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Abstract

The invention discloses a heat-resisting antibacterial thermoplastic polyurethane elastomer. The heat-resisting antibacterial thermoplastic polyurethane elastomer consists of the following components by weight percent: 25 to 40 percent of thermoplastic polyurethane, 10 to 20 percent of heat-resisting resin, 5 to 12 percent of antibacterial agent, 15 to 25 percent of polyolefin resin, 20 to 30 percent of filling oil, 1 to 10 percent of nano talcum powder, 0.4 to 3 percent of composite antioxidant and 0.1 to 2 percent of lubricating agent. According to the prepared heat-resisting antibacterial thermoplastic polyurethane elastomer, a heat-resisting agent is added, so that on the basis of guaranteeing the original high elasticity of the thermoplastic polyurethane elastomer, the heat resistance of the material is improved; and when the heat-resisting antibacterial thermoplastic polyurethane elastomer is applied to a bathroom accessory water pipe product, after being used at a high temperature for a long time, the fracturing phenomenon is avoided. By adding the antibacterial agent, the bacterial killing rate is high, the speed is high, the long-term efficacy is good, and the heat-resisting antibacterial thermoplastic polyurethane elastomer is applied to the fields such as bathroom hoses, tap water pipes and the like.

Description

technical field [0001] The invention relates to the field of thermoplastic elastomers, in particular to a heat-resistant and antibacterial thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] In recent years, with the improvement of people's living standards and the enhancement of health awareness, people use antibacterial agents to develop antibacterial materials and antibacterial products, which have the self-cleaning function of "antibacterial hygiene". Judging from the development of antibacterial materials at home and abroad, antibacterial plastics are the fastest growing and most widely used antibacterial materials, which is closely related to the rapid development of synthetic resins such as plastics. [0003] Thermoplastic polyurethane elastomer (TPU) is a kind of polyurethane material that can be plasticized by heating and can be dissolved by solvent. It has a unique soft and hard block copolymer structure. Because it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L75/06C08L75/08C08L71/12C08L81/02C08L79/08C08L23/14C08L23/12C08L23/06C08L91/00C08L5/08C08K13/06C08K9/12C08K3/08C08K13/02C08K3/34B29B9/06B29C47/92B29C48/92
Inventor 房小明
Owner 房小明
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