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Thermoplastic foaming polyurethane material applied to rail transit and preparation method thereof

A thermoplastic polyurethane and foamed polyurethane technology, applied in the field of thermoplastic foamed polyurethane materials, can solve the problems of difficult research and development of TPU materials, high price, and low cleaning frequency.

Inactive Publication Date: 2021-04-09
JIANGSU BIDE SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] TPU material has the characteristics of wear resistance, low temperature resistance, odorless, non-toxic, light weight, thin quality, etc., and has both the processability of plastic and the physical and mechanical properties of rubber. It is widely used in the fields of automobile industry, medical and health care, and daily necessities. , but the research and development of TPU materials is more difficult. Although most of the conventional passenger car floor fabrics in China are domestically produced and can meet the requirements of use, most of the floor fabrics used on high-speed rail, bullet trains, and urban rail trains are imported from abroad. The product is expensive and has high requirements for aging resistance, flame retardancy, and friction resistance, but there are no specific requirements for antibacterial and antibacterial. We know that rail transit is a closed system, and the frequency of cleaning is low. The environmental risk of bacterial growth, in order to meet the requirements of better people's health and safety, it is necessary to study a thermoplastic foamed polyurethane material with antibacterial and antibacterial effects for rail transit and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A thermoplastic foaming polyurethane material used in rail transit, which is composed of the following components in weight percentage: thermoplastic polyurethane particles 55%, crosslinking agent 0.8%, cerium oxide 0.25%, sodium stearate 0.7%, flame retardant 2.5% , magnesium hydroxide 4%, aluminum hydroxide 6%, white carbon black 5%, talcum powder 10%, nano-titanium dioxide 0.35%, dispersant 1.2%, colorant 2.0%, antioxidant 0.9%, anti-yellowing accelerator 0.3 %, 0.9% stabilizer, 0.6% foaming agent, 5.5% film and the balance of aggregate fiber.

[0022] The flame retardant is a mixture of antimony trioxide and phosphorus flame retardant in a mass ratio of 3:1.

[0023] The dispersant is formed by mixing saturated and unsaturated fatty acid zinc.

[0024] The anti-yellowing accelerator is the anti-yellowing accelerator Em-33.

[0025] The stabilizers are barium and zinc stabilizers.

[0026] The adhesive film is formed by adding polyurethane solution into concentrat...

Embodiment 2

[0035] A thermoplastic foaming polyurethane material used in rail transit, which is composed of the following components in weight percentage: thermoplastic polyurethane particles 50%, crosslinking agent 0.6%, cerium oxide 0.3%, sodium stearate 0.5%, flame retardant 3.5% , magnesium hydroxide 5%, aluminum hydroxide 8%, white carbon black 3%, talcum powder 12%, nano-titanium dioxide 0.2%, dispersant 1.5%, colorant 0.8%, antioxidant 1.5%, anti-yellowing accelerator 0.2 %, stabilizer 1.1%, foaming agent 0.5%, film 8% and aggregate fiber balance.

[0036] The flame retardant is a mixture of antimony trioxide and phosphorus flame retardant in a mass ratio of 1:1.

[0037] The dispersant is formed by mixing saturated and unsaturated fatty acid zinc.

[0038] The anti-yellowing accelerator is the anti-yellowing accelerator Em-33.

[0039] The stabilizers are barium and zinc stabilizers.

[0040] The adhesive film is formed by adding polyurethane solution into concentrated natural ...

Embodiment 3

[0049] A thermoplastic foamed polyurethane material used in rail transit, consisting of the following ingredients in weight percentage: 60% thermoplastic polyurethane particles, 1.5% crosslinking agent, 0.2% cerium oxide, 0.8% sodium stearate, and 1.2% flame retardant , magnesium hydroxide 3%, aluminum hydroxide 5%, white carbon black 3%, talc powder 8%, nano-titanium dioxide 0.5%, dispersant 0.8%, colorant 3.5%, antioxidant 0.8%, anti-yellowing accelerator 0.5 %, stabilizer 0.7%, foaming agent 0.8%, film 5% and aggregate fiber balance.

[0050] The flame retardant is a mixture of antimony trioxide and phosphorus flame retardant in a mass ratio of 2:1.

[0051] The dispersant is formed by mixing saturated and unsaturated fatty acid zinc.

[0052] The anti-yellowing accelerator is the anti-yellowing accelerator Em-33.

[0053] The stabilizers are barium and zinc stabilizers.

[0054] The adhesive film is formed by adding polyurethane solution into concentrated natural rubber...

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PUM

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Abstract

The invention discloses a thermoplastic foaming polyurethane material applied to rail transit. The material is composed of thermoplastic polyurethane particles, a cross-linking agent, cerium oxide, sodium stearate, a flame retardant, magnesium hydroxide, aluminum hydroxide, white carbon black, talcum powder, nanometer titanium dioxide, a dispersing agent, a pigment, an antioxidant, an anti-yellowing accelerant, a stabilizing agent, a foaming agent, an adhesive film and aggregate fibers. According to the invention, antibacterial treatment is carried out in a manner of adding nanometer titanium dioxide into the polyurethane adhesive film, and hydroxylated glass fibers are also added into the polyurethane foaming material, so compared with traditional glass fibers, the bonding effect of the polyurethane foaming material and an adhesive film is better, and the dispersion of nanometer titanium dioxide in the adhesive film is better facilitated; and rare earth cerium oxide is also added to and combined with an inorganic antibacterial agent, so antibacterial effect is improved. The antibacterial rates of the thermoplastic foaming polyurethane material on escherichia coli, staphylococcus aureus and candida albicans all reach 99% or above.

Description

technical field [0001] The invention relates to the technical field of thermoplastic foamed polyurethane materials, in particular to a thermoplastic foamed polyurethane material applied to rail transit and a preparation method thereof. Background technique [0002] Rail transit vehicles are vehicles with a large carrying capacity and belong to a mobile environment. Due to the large flow of people and frequent use, the ground is very easy to be polluted and damaged. In daily encounters with rain and external environmental pollution factors, ground pollution follows the flow of people on the soles of the shoes. Entering the compartment will directly affect the environment inside the car and the cleanliness of the ground, as well as the variety of luggage carried by passengers, and will also cause damage to the floor cloth. Rail trains have high requirements for aesthetics, strict requirements for anti-pyrotechnic performance, and high requirements for maintainability, and the ...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08K13/04C08K7/14C08K7/26C08K3/34C08K5/098C08K3/22C08J9/04C08J9/36C08J5/18C09D107/02C09D175/04C09D5/14
CPCC08J9/04C08J9/0023C08J9/0085C08J9/0095C08J9/0066C08J9/365C08J5/18C09D107/02C09D5/14C08J2375/04C08K13/04C08K7/14C08K7/26C08K3/34C08K5/098C08K2003/2224C08K2003/2227C08J2407/02C08J2475/04C08K2201/011C08K2003/2241C08K2003/2213C08K3/2279
Inventor 王恺蔡国强贾缘平周扬王立状
Owner JIANGSU BIDE SCI & TECH CO LTD