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Antibacterial thermoplastic polyurethane composite material and preparation method thereof

A technology of thermoplastic polyurethane and composite materials, applied in the field of antibacterial polymers, can solve the problems of organic antibacterial agents such as volatilization, poor chemical stability, and large environmental pollution, and achieve long-lasting antibacterial effects, low cost, and small environmental pollution.

Inactive Publication Date: 2016-02-03
SHANGHAI HENGAN POLYURETHANE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the method of adding organic or inorganic antibacterial agents to the matrix of polymer materials is used to improve the antibacterial properties of the matrix materials, but organic antibacterial agents are easy to volatilize, have poor chemical stability, high toxicity, and large environmental pollution. Used in water bladder materials; and inorganic antibacterial materials have been widely concerned because of their safety, high efficiency, broad spectrum, and good release properties.

Method used

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  • Antibacterial thermoplastic polyurethane composite material and preparation method thereof
  • Antibacterial thermoplastic polyurethane composite material and preparation method thereof
  • Antibacterial thermoplastic polyurethane composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 50 parts of polytetrahydrofuran ether diol, 19 parts of 1,4-butanediol, and 4 parts of carbodiimide, and place them at 70° C. for 3 hours for melting and dehydration. Put polytetrahydrofuran ether diol, 1,4-butanediol and carbodiimide after melting and dehydration, and 30 parts of diphenylmethane diisocyanate melted at 80°C into a twin-screw reaction extruder for reaction, and extrude The temperature is 200°C. Add 1.2 parts of nano-silver in the middle of the twin-screw reaction extruder, and the mixture melt ("mixture melt" refers to tetrahydrofuran ether glycol, 1,4-butanediol, carbodiimide, diphenylmethane The mixture (melt) composed of isocyanate is melted and mixed thoroughly, and then pelletized under water to obtain thermoplastic polyurethane composite material particles. The obtained thermoplastic polyurethane composite material particles were dried in an oven at 150°C and aged for 20 hours to obtain the desired antibacterial thermoplastic polyurethane co...

Embodiment 2

[0031] Weigh 45 parts of polyethylene adipate diol, 21 parts of glycerol, and 1 part of bisphenol A diglycidyl ether, and place them at 90° C. for 4 hours for melting and dehydration. Add polyethylene adipate diol, glycerol, bisphenol A diglycidyl ether and 23 parts of toluene diisocyanate melted at 60°C to the twin-screw reaction extruder for reaction at the same time after melting and dehydration. The outlet temperature was 180°C. Add 2 parts of TiO in the middle of the twin-screw reaction extruder 2 , melted and fully mixed with the mixture, and pelletized under water to obtain thermoplastic polyurethane composite material particles. The obtained thermoplastic polyurethane composite material particles were placed in an oven at 130° C. for drying and aging for 40 hours to obtain the desired antibacterial thermoplastic polyurethane composite material.

[0032] The tensile strength of the obtained antibacterial thermoplastic polyurethane is 32.2MPa, and the elongation at bre...

Embodiment 3

[0034] Weigh 60 parts of polyoxypropylene glycol, 25 parts of triisopropanolamine, and 9 parts of 2-oxazoline, and place them at 110° C. for melting and dehydration for 2 hours. Add polyoxypropylene diol, isopropanolamine and 2-oxazoline after melting and dehydration, and 44 parts of p-phenylene diisocyanate melted at 100°C to the twin-screw reaction extruder for reaction at the same time, and the extrusion temperature is 210 ℃. Add 2.7 parts of nano-ZnO in the middle section of the twin-screw reaction extruder, melt and fully mix with the mixture, and pelletize under water to obtain thermoplastic polyurethane composite material particles. The obtained thermoplastic polyurethane composite material particles were dried and aged in an oven at 200° C. for 64 hours to obtain the required antibacterial thermoplastic polyurethane composite material.

[0035] The obtained antimicrobial thermoplastic polyurethane has a tensile strength of 29 MPa and an elongation at break of 592%. The ...

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Abstract

The invention discloses an antibacterial thermoplastic polyurethane composite material and a preparation method thereof. The antibacterial thermoplastic polyurethane composite material is prepared from, by weight, 40-70 parts of macromolecular polyols, 0.05-3.0 parts of inorganic antibacterial materials, 5-50 parts of isocyanate, 3-30 parts of micromolecular chain extenders and 0-10 parts of hydrolytic stabilizers. The preparation technology is stable, the requirement for equipment is low, cost is low, the inorganic antibacterial materials are not prone to being separated out, the obtained product can keep good mechanical performance of thermoplastic polyurethane elastomers, and the product also has the advantages of being high in antibacterial performance, lasting in effect, high in safety, elasticity and tenacity, resistant to hydrolysis and aging, high in chemical stability, small in pollution to the environment and free of toxin.

Description

technical field [0001] The invention relates to an antibacterial polymer technology, in particular to an antibacterial thermoplastic polyurethane composite material and a preparation method thereof. Background technique [0002] Water bladders have special uses due to their unique structure. When natural disasters such as earthquakes occur, in order to ensure the water consumption of people in the disaster area, movable water bladders are often used to provide drinking water for transportation in the disaster area. For outdoor activities such as long-term field marching or camping and rock climbing, frequent access to water containers will consume limited physical strength and time, and will also wear out the equipment to a certain extent. Portable water bladders are generally used as drinking water storage containers. Due to its special use occasions, the water bladder should not only have good mechanical strength, waterproof and moisture permeability, and durability, but ...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/44C08G18/42C08G18/32C08K3/08C08K3/22C08K9/12C08K3/34C08K3/04
CPCC08G18/6674C08G18/4238C08G18/4825C08G18/4854C08G18/664C08G18/6688C08G2390/00C08K3/04C08K3/08C08K3/22C08K3/34C08K9/12C08K2003/0806C08K2003/2241C08K2003/2296C08K2201/011
Inventor 朱勇刘宝全
Owner SHANGHAI HENGAN POLYURETHANE CO LTD
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