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A kind of amino modified tio 2 Preparation method of leather fiber

A leather fiber, amino modification technology, applied in the direction of light-resistant fiber, fiber treatment, textile and papermaking, etc., can solve the problem of aging of the coating agent, and achieve increased rubbing fastness, good UV resistance, and strong stability. Effect

Active Publication Date: 2020-07-28
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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  • A kind of amino modified tio <sub>2</sub> Preparation method of leather fiber
  • A kind of amino modified tio <sub>2</sub> Preparation method of leather fiber
  • A kind of amino modified tio <sub>2</sub> Preparation method of leather fiber

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preparation example Construction

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

[0016] 1) Use silane coupling agent (3-aminopropyltriethoxysilane) to TiO 2 Carry out surface chemical modification to make TiO 2 With amino groups on the surface: 3-5g TiO 2 Add 0.5-1% silane coupling agent in volume fraction, mix and stir for 2-3h, control the temperature at 60-80℃, after the reaction, filter and dry at 110℃ for 10-20min.

[0017] 2) Use sodium chloroacetate to carboxylate the leather fiber, so that the leather fiber has more active groups:

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

[0019] 2.2) Soak 3-5g leather in 100-200mL deionized water, soak for 10-12h, and then place it in a water bath constant temperature oscillator to shake for 4-6h;

[0020] 2.3) Add the sodium chlo...

Embodiment 1

[0027] (1) 3g TiO 2 A silane coupling agent with a volume fraction of 0.5% was added, mixed and stirred for 3 hours, and the temperature was controlled at 60°C. After the reaction, it was filtered and dried 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 to neutralize to obtain sodium chloroacetate. Then 3g leather was immersed in 100mL deionized water for 10h, and then placed in a water bath constant temperature shaker for 4h. Add sodium chloroacetate to the wet leather for reaction, the temperature is 45 ℃, with NaHCO 3 Adjust the pH value of the system to remain at 7.5, and react for 6 hours.

[0029] (3) Put the product prepared in (1) and (2) above in a 100 mL beaker, add 0.05 g / mL zirconium sulfate solution, the pH of the system is 1.5, and stir and react for 3 hours. After the reaction, it was filtered, washed with deionized water 5 times,...

Embodiment 2

[0036] (1) Put 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, filter and dry at 110°C for 15 minutes.

[0037] (2) Add 22 g of chloroacetic acid and 15 mL of water to a three-necked flask, stir to dissolve, and at the same time add 30% sodium hydroxide solution to neutralize to obtain sodium chloroacetate. Then 3g leather was immersed in 100mL deionized water for 10h, and then placed in a water bath constant temperature shaker for 4h. Add sodium chloroacetate to the wet leather for reaction, the temperature is 45 ℃, with NaHCO 3 Adjust the pH value of the system to keep at 8, and react for 6 hours.

[0038] (3) Put the product prepared in (1) and (2) above in a 100 mL beaker, add 0.07 g / mL zirconium sulfate solution, the system pH is 1.5, and stir for 4 hours. After the reaction, it was filtered, washed with deionized water 5 times, and dried.

[0039] (4) Homemade containing 5g T...

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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, in particular to an amino-modified TiO 2 Preparation method of leather fiber. Background technique [0002] With the improvement of people's living standards, leather products occupy an important role in our daily lives, 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 rays can cross-link and degrade leather collagen segments, thereby affecting its use value. [0003] In recent years, nanomaterials have been used more and more widely in the leather field. The use of nanomaterials gives leather or coating film 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 absorb ultraviolet rays, so that it has a stronger ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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