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High-strength antibacterial thermoplastic elastomer and preparation method thereof

A thermoplastic elastomer, high-strength technology, applied in the field of thermoplastic elastomers, can solve the problems of restricting the application of thermoplastic elastomers, high toxicity of antibacterial agents, short duration, etc., to achieve improved tensile strength, good antibacterial effect, and improved tensile strength The effect of strength and antibacterial properties

Inactive Publication Date: 2017-06-23
房小明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is no environmentally friendly antibacterial thermoplastic elastomer special material at present. The elastomer industry always adds antibacterial agents to thermoplastic elastomer raw materials to prepare antibacterial thermoplastic elastomers. The resulting products are high in cost and unstable in quality. Although they have antibacterial functions , but the high toxicity and short duration of antibacterial agents limit the application of thermoplastic elastomers to a certain extent

Method used

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  • High-strength antibacterial thermoplastic elastomer and preparation method thereof

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Effect test

Embodiment 1

[0030] A high-strength antibacterial thermoplastic elastomer, the basic formula and weight ratio are: polyester thermoplastic polyurethane 35%, chitosan fiber 25%, hydroxyl-terminated hyperbranched polyamide ester 6%, maleic anhydride grafted EPDM 5% , olive oil 20%, coupling agent modified nano talcum powder 8%, antioxidant 1%.

[0031] The above-mentioned high-strength antibacterial thermoplastic elastomer, the process steps of its preparation are as follows:

[0032] (1) Weigh the raw materials in the formula according to the weight ratio and add them to the high mixer, stir for 10 minutes, and mix well;

[0033] (2) Put the raw materials mixed in step (1) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: the temperature range of the barrel of the twin-screw extruder is 200-210 ℃, the die temperature is controlled at 160 ℃.

Embodiment 2

[0035] A high-strength antibacterial thermoplastic elastomer, the basic formula and weight ratio are: polyester thermoplastic polyurethane 25%, chitosan fiber 15%, hydroxyl-terminated hyperbranched polyester 12%, maleic anhydride grafted SEBS 10%, Olive oil 21%, coupling agent modified nano talcum powder 15%, antioxidant 2%.

[0036] The above-mentioned high-strength antibacterial thermoplastic elastomer, the process steps of its preparation are as follows:

[0037] (1) Weigh the raw materials in the formula according to the weight ratio and add them to the high mixer, stir for 60 minutes, and mix well;

[0038] (2) Put the raw materials mixed in step (1) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: the barrel temperature range of the twin-screw extruder is 220°C, The die temperature was controlled at 180°C.

Embodiment 3

[0040] A high-strength antibacterial thermoplastic elastomer, the basic formula and weight ratio are: polyester thermoplastic polyurethane 30%, chitosan fiber 20%, hydroxyl-terminated hyperbranched polyamide ester 9%, maleic anhydride grafted EPDM 5% , olive oil 27.5%, coupling agent modified nano talcum powder 8%, antioxidant 0.5%.

[0041] The above-mentioned high-strength antibacterial thermoplastic elastomer, the process steps of its preparation are as follows:

[0042] (1) Weigh the raw materials in the formula according to the weight ratio and add them to the high mixer, stir for 30 minutes, and mix well;

[0043] (2) Put the raw materials mixed in step (1) into the hopper of the twin-screw extruder, melt and extrude, and granulate; the processing technology is as follows: the temperature range of the barrel of the twin-screw extruder is 210-220 ℃, the die temperature is controlled at 170 ℃.

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Abstract

The invention discloses a high-strength antibacterial thermoplastic elastomer and a preparation method thereof. The basic formula of the high-strength antibacterial thermoplastic elastomer comprises the following components in percentage by weight: 25 to 35 percent of thermoplastic polyurethane, 15 to 25 percent of antibacterial fibers, 6 to 12 percent of a hydroxyl-terminated hyperbranched polymer, 5 to 10 percent of a maleic anhydride grafted copolymer, 20 to 30 percent of filling oil, 8 to 15 percent of coupling agent modified fillers and 0.1 to 2 percent of an antioxidant. The preparation method provided by the invention comprises the following steps: feeding materials which are mixed uniformly into a charging hopper of a double-screw extruding machine, and performing double-screw extrusion and pelleting. The thermoplastic elastomer prepared by the method has high mechanical strength and good antibacterial effect, and is environmentally-friendly, non-toxic and applicable in the fields of building materials, medical facilities, medical equipment and the like.

Description

technical field [0001] The invention relates to the field of thermoplastic elastomers, in particular to a high-strength antibacterial thermoplastic elastomer and a preparation method thereof. Background technique [0002] Antibacterial plastic is a new type of functional material, which has been widely used in many fields such as home appliances, food packaging, stationery, kitchen and bathroom supplies, and auto parts. The development and research of new plastic products with antibacterial properties have very important practical significance for improving people's living environment, reducing the incidence of diseases, and protecting human health. [0003] Thermoplastic elastomer is a material that has the high elasticity, high strength and high resilience of rubber, and has the characteristics of injection molding. It has the advantages of environmental protection, no pollution, wide application range, good elasticity, soft touch, etc., good weather resistance, fatigue r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L5/08C08L87/00C08L51/04C08L91/00C08K9/00C08K3/34
CPCC08L75/06C08K2201/011C08L2205/035C08L2205/05C08L2205/16C08L2207/04C08L2312/00C08L5/08C08L87/00C08L51/04C08L51/003C08L51/006C08L91/00C08K9/00C08K3/34
Inventor 房小明
Owner 房小明