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Preparation method of amino modified TiO2 leather fiber

A kind of leather fiber, amino modification technology, applied in the direction of light fast fiber, fiber treatment, textile and paper making, etc., can solve the problem of aging of finishing agent

Active Publication Date: 2018-05-15
JIANGSU HONGYUAN PHARMA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the research of leather UV resistance, leather finishing agents are mainly used to impart UV resistance to leather, but the coating agent itself has aging problems, and TiO 2 The addition is also mainly for the anti-ultraviolet effect on the finishing agent, and does not have an anti-ultraviolet effect on the leather itself

Method used

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  • Preparation method of amino modified TiO2 leather fiber
  • Preparation method of amino modified TiO2 leather fiber
  • Preparation method of amino modified TiO2 leather fiber

Examples

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preparation example Construction

[0015] The invention provides an amino-modified TiO 2 The preparation method of leather fiber, comprises the following steps:

[0016] 1) Use silane coupling agent (3-aminopropyltriethoxysilane) to TiO 2 surface chemical modification to make TiO 2 Amino groups on the surface: add 3-5g TiO 2 Add a silane coupling agent with a volume fraction of 0.5-1%, mix and stir for 2-3 hours, and control the temperature at 60-80° C. After the reaction is completed, filter and dry at 110° C. for 10-20 minutes.

[0017] 2) Utilize sodium chloroacetate to carry out carboxylation to leather fiber, make leather fiber have more reactive groups:

[0018] 2.1) Add 20-30 g of chloroacetic acid and 15-20 mL of water into a three-necked flask, stir to dissolve, and at the same time add 30-50% sodium hydroxide solution dropwise to neutralize to obtain sodium chloroacetate;

[0019] 2.2) Soak 3-5g of leather in 100-200mL of deionized water, soak for 10-12h, then put it in a water bath constant tempe...

Embodiment 1

[0027] (1) 3g TiO 2 Add a silane coupling agent with a volume fraction of 0.5%, mix and stir for 3 hours, and control the temperature at 60°C. After the reaction is completed, filter and dry at 110°C for 15 minutes.

[0028] (2) Add 20 g of chloroacetic acid and 15 mL of water into a three-necked flask, stir to dissolve, and simultaneously add 30% sodium hydroxide solution dropwise for neutralization to obtain sodium chloroacetate. Then soak 3g of leather in 100mL of deionized water, soak for 10h, then put it in a water bath constant temperature oscillator and shake for 4h. Sodium chloroacetate is added to the remoistened leather for reaction at a temperature of 45°C, with NaHCO 3 The pH value of the adjustment system was maintained at 7.5, and the reaction was carried out for 6 hours.

[0029] (3) Put the product prepared in the above (1) and above (2) into a 100mL beaker, add 0.05g / mL zirconium sulfate solution, the pH of the system is 1.5, and stir for 3h. After the reac...

Embodiment 2

[0036] (1) 5g TiO 2 Add a silane coupling agent with a volume fraction of 1%, mix and stir for 3 hours, and control the temperature at 60° C. After the reaction is completed, filter and dry at 110° C. for 15 minutes.

[0037] (2) Add 22 g of chloroacetic acid and 15 mL of water into a three-necked flask, stir to dissolve, and simultaneously add 30% sodium hydroxide solution dropwise for neutralization to obtain sodium chloroacetate. Then soak 3g of leather in 100mL of deionized water, soak for 10h, then put it in a water bath constant temperature oscillator and shake for 4h. Sodium chloroacetate is added to the remoistened leather for reaction at a temperature of 45°C, with NaHCO 3 Adjust the pH value of the system to keep it at 8, and react for 6 hours.

[0038] (3) Put the product prepared in the above (1) and above (2) into a 100mL beaker, add 0.07g / mL zirconium sulfate solution, the pH of the system is 1.5, and stir for 4h. After the reaction, filter, wash with deionize...

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Abstract

The invention provides a preparation method of amino modified TiO2 leather fiber. The preparation method includes: utilizing a silane coupling agent to chemically modify the surface of TiO2 to enablethe surface to have amino; utilizing sodium chloroacetate to carboxylate leather fiber to enable the leather fiber to have more active groups; utilizing zirconium sulfate as a bridging agent to crosslink modified TiO2 with modified leather fiber so as to enable modified leather to have enhanced ultraviolet resistance.

Description

technical field [0001] The invention relates to the field of functional materials, specifically an amino-modified TiO 2 Process for the preparation of leather fibers. Background technique [0002] With the improvement of people's living standards, leather products play an important role in our daily life, such as the shoes, clothes and leather bags we use, most of which are made of leather. However, ultraviolet rays are ubiquitous in daily life, and long-term ultraviolet radiation can cause cross-linking and degradation of leather collagen chains, thereby affecting its use value. [0003] In recent years, nanomaterials have been more and more widely used in the field of leather. By using nanomaterials, leather or coating films can be endowed with self-cleaning, anti-ultraviolet, antibacterial, and super-hydrophilic properties. Among them, due to its small particle size and high activity, nano-titanium dioxide can not only reflect and scatter ultraviolet rays, but also abso...

Claims

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Application Information

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IPC IPC(8): D06M13/21D06M11/46D06M11/56
CPCD06M11/46D06M11/56D06M13/21D06M2200/25
Inventor 蒋静远高海燕
Owner JIANGSU HONGYUAN PHARMA
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