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Molecular sieve-based antibacterial additive for automobile leather as well as preparation method and application thereof

An antibacterial additive and molecular sieve technology, applied in the field of antibacterial materials, can solve the problems of incomplete antibacterial function, poor antibacterial effect, and low antibacterial life, and achieve the effect of simple and easy preparation method, large specific surface area, and improved mechanical strength

Inactive Publication Date: 2021-03-12
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Yet in the prior art, there are few reports on how to better apply cuprous oxide to automobile leather as an antibacterial agent, and cuprous oxide is directly applied to automobile leather as an antibacterial agent, and the following problems will be arranged: (1) Poor dispersion and incomplete antibacterial function; (2) Poor compatibility with polyurethane production system, the raw material of automobile leather
For the above technical problems, it is finally reflected in the problem of poor antibacterial effect and low antibacterial life of automobile leather products added with cuprous oxide fungicides

Method used

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  • Molecular sieve-based antibacterial additive for automobile leather as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0050] The present embodiment provides a molecular sieve-based antibacterial additive for automobile leather, and its preparation method is as follows:

[0051] (1) Mix sodium metaaluminate, sodium hydroxide, sodium silicate, and water in the following molar ratio: SiO 2 / Al 2 o 3 = 3; Na 2 O / SiO 2 =1.5;H 2 O / Na 2 O=35, get the sol after mixing evenly;

[0052] (2) The sol was left to stand at 25°C for 3h, put into a polytetrafluoroethylene-lined stainless steel reaction kettle, and left at 98°C for 5h to obtain a crude product;

[0053] (3) The crude product is washed with deionized water, filtered, and dried to obtain a 13X molecular sieve material;

[0054] (4) According to the mass ratio, add 40 parts of 13X molecular sieve material to 300 parts of water to disperse, add 0.5 parts of copper acetate at the same time, add aqueous sodium hydroxide solution drop by drop, adjust pH = 10, stir well, heat to 70 ° C for 20 minutes, cool to At 20°C, a suspension was obtaine...

Embodiment 2

[0059] The present embodiment provides a molecular sieve-based antibacterial additive for automobile leather, and its preparation method is as follows:

[0060] (1) Mix sodium metaaluminate, sodium hydroxide, sodium silicate, and water in the following molar ratio: SiO 2 / Al 2 o 3 =5;Na 2 O / SiO 2 = 1; H 2 O / Na 2 O=35, get the sol after mixing evenly;

[0061] (2) The sol was left to stand at 25°C for 3h, put into a polytetrafluoroethylene-lined stainless steel reaction kettle, and stood at 96°C for 14h to obtain a crude product;

[0062] (3) The crude product is washed with deionized water, filtered, and dried to obtain a 13X molecular sieve material;

[0063] (4) According to the mass ratio, add 40 parts of 13X molecular sieve material to 300 parts of water to disperse, add 2 parts of copper acetate at the same time, add aqueous sodium hydroxide solution drop by drop, adjust pH = 9.5, stir well, heat to 65 ° C for 30 min, cool to At 20°C, a suspension was obtained;

...

Embodiment 3

[0068] The present embodiment provides a molecular sieve-based antibacterial additive for automobile leather, and its preparation method is as follows:

[0069] (1) Mix sodium metaaluminate, sodium hydroxide, sodium silicate, and water in the following molar ratio: SiO 2 / Al 2 o 3 = 4; Na 2 O / SiO 2 =1.3;H 2 O / Na 2 O=50, get the sol after mixing evenly;

[0070] (2) The sol was left to stand at 25°C for 5h, put into a polytetrafluoroethylene-lined stainless steel reaction kettle, and stood at 100°C for 9h to obtain a crude product;

[0071] (3) The crude product is washed with deionized water, filtered, and dried to obtain a 13X molecular sieve material;

[0072] (4) According to the mass ratio, add 40 parts of 13X molecular sieve material to 300 parts of water to disperse, add 3 parts of copper acetate at the same time, add aqueous sodium hydroxide solution drop by drop, adjust pH = 10.5, stir well, heat to 75 ° C for 15 minutes, cool to At 20°C, a suspension was obtai...

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Abstract

The invention relates to a molecular sieve-based antibacterial additive for automobile leather as well as a preparation method and application thereof. The molecular sieve-based antibacterial additivefor the automobile leather comprises a 13X molecular sieve material and cuprous oxide dispersed on the surface of the 13X molecular sieve material. The preparation method comprises the following steps: mixing a copper salt with a 13X molecular sieve material, adding a reducing agent solution, and reacting to obtain the catalyst. According to the antibacterial agent disclosed by the invention, a 13X molecular sieve material is used as a carrier, and cuprous oxide dispersed on the surface of the carrier is used as an antibacterial active component, so that the dispersion effect of the antibacterial active component cuprous oxide is better, agglomeration can be avoided, and the advantage of large specific surface area of the antibacterial agent is brought into full play; in addition, the antibacterial agent has good compatibility with a production system of automobile leather raw material polyurethane, so that the mechanical strength of the material is improved. The molecular sieve-basedantibacterial additive can solve the application problem of cuprous oxide in automobile leather products, and can be used as an antibacterial additive of polyurethane synthetic leather for automobiles.

Description

technical field [0001] The invention belongs to the technical field of antibacterial materials, and relates to a molecular sieve-based antibacterial additive and its preparation method and application, in particular to a molecular sieve-based antibacterial additive for automobile leather and its preparation method and application. Background technique [0002] Cuprous oxide (Cu 2 O) is a non-stoichiometric compound. As an intermediate valence state copper compound, it has both oxidizing and reducing properties. It has a strong binding force with biological proteins, inhibits protein growth, and has high antibacterial activity. It has high efficiency, spectrum, permanent antibacterial effect, low toxicity and no pollution. [0003] In the prior art, there are reports about cuprous oxide as an antibacterial agent product. For example, CN105524260A discloses a method for preparing an antibacterial material based on cupric oxide / cuprous oxide by in-situ polymerization, includin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/20A01N25/08A01P1/00D06N3/00D06N3/14
CPCA01N25/08A01N59/20D06N3/0059D06N3/14
Inventor 丛穆张斌陈书礼张明远肖瑶白雨萍刘宏宇郑虹周宇飞滕腾
Owner CHINA FIRST AUTOMOBILE
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