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Waterproof leather prepared via polymerization deposition of low-temperature plasmas and preparation method of waterproof leather

A low-temperature plasma and plasma technology, which is applied in special leather manufacturing, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather/fur mechanical treatment, etc., can solve the problems affecting the use value, life and Surface beauty and other issues, to achieve the effect of reducing processing procedures and processing costs, maintaining hygienic performance, and high efficiency

Inactive Publication Date: 2015-05-27
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to aim at the defects that the leather surface is easily wetted by water and produce water marks, which affects its use value, lifespan and surface appearance. First, it provides a method for preparing waterproof leather by low-temperature plasma polymerization deposition.

Method used

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  • Waterproof leather prepared via polymerization deposition of low-temperature plasmas and preparation method of waterproof leather
  • Waterproof leather prepared via polymerization deposition of low-temperature plasmas and preparation method of waterproof leather
  • Waterproof leather prepared via polymerization deposition of low-temperature plasmas and preparation method of waterproof leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Put the hexamethylcyclotrisiloxane into the vaporization tank, and then put the nubuck leather with the frosted side up into the reaction chamber of the plasma equipment connected with the vaporization tank; pump the vacuum to 30Pa, and raise the temperature of the vaporization tank at the same time to 30°C, vaporize hexamethylcyclotrisiloxane, and add 7×10 -5 ml / min·cm 2 The flow rate enters the plasma reaction chamber, and then the discharge reaction power is 0.15W / cm 2 Next, continue the discharge reaction for 15 minutes, turn off the plasma discharge electrode, and fill the plasma reaction chamber with air to remove unreacted monomers on the surface of the cowhide nubuck leather.

[0038] The static contact angle of the waterproof cowhide nubuck leather obtained in this embodiment is 141°±1°, and the rolling angle is 15°±2°.

Embodiment 2

[0040] Put octamethylcyclotetrasiloxane into the vaporization tank, and then put the nubuck cowhide leather with the frosted side up into the reaction chamber of the plasma equipment connected with the vaporization tank; pump the vacuum to 30Pa, and raise the temperature of the vaporization tank at the same time to 30°C, vaporize octamethylcyclotetrasiloxane, and use 8×10 -5 ml / min·cm 2 The flow rate enters the plasma reaction chamber, and then the discharge reaction power is 0.5W / cm 2 Next, continue the discharge reaction for 10 minutes, turn off the plasma discharge electrode, and fill the plasma reaction chamber with air to remove unreacted monomers on the surface of the cowhide nubuck leather.

[0041] The static contact angle of the waterproof cowhide nubuck leather obtained in this embodiment is 155°±2°, and the rolling angle is 8°±2°.

Embodiment 3

[0043] Put decamethylcyclopentasiloxane into the vaporization tank, and then put the pigskin nubuck suede face up into the reaction chamber of the plasma equipment connected to the vaporization tank; vacuumize to 25Pa, and at the same time put the The temperature was raised to 25°C to vaporize the decamethylcyclopentasiloxane, and 1×10 -4 ml / min·cm 2 The flow rate enters the plasma reaction chamber, and then the discharge reaction power is 1W / cm 2 Then, continue the discharge reaction for 18 minutes, turn off the plasma discharge electrode, and fill the plasma reaction chamber with air to remove unreacted monomers on the surface of pigskin nubuck leather.

[0044] The static contact angle of the waterproof pigskin nubuck leather obtained in this embodiment is 145°±3°, and the rolling angle is 15°±2°.

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Abstract

The invention discloses waterproof leather prepared via polymerization deposition of low-temperature plasmas and a preparation method of the waterproof leather. The method comprises the following steps: vaporizing siloxane monomers or crylic acid monomers or acrylate monomers or fluorinated acrylate monomers or fluorosilane monomers under the vacuum degree of 25Pa to 45Pa at the temperature of 25 DEG C to 50 DEG C; then adding the vaporized monomers into plasma reaction equipment according to a certain flow and reacting for 1 to 25 minutes under the discharge power within 0.15W / cm<2> to 1.5W / cm<2>; and depositing the monomers on the leather in the plasma reaction equipment, wherein the thickness of a waterproof membrane deposited on the surface of the leather in a polymerization manner is in a micron level or below the micron level, the static contact angle of the waterproof membrane is within 136 DEG to 155 DEG and the rolling angle of the waterproof membrane is within 7 DEG to 22 DEG, and stagger collagen fibers can be seen clearly by observing through a scanning electron microscope. The method is simple in treatment process, short in time, high in efficiency and low in energy consumption. The obtained waterproof membrane is thin, and not only can maintain the real leather feeling of the surfaces of stone washed leathers, suede leathers, double-purpose leathers and the like but also can maintain the sanitation performance of nature leathers.

Description

technical field [0001] The invention belongs to the technical field of functional leather and its preparation, and in particular relates to a waterproof leather prepared by low-temperature plasma polymerization deposition and a method thereof. Background technique [0002] The waterproof treatment of the surface of ordinary leather is generally completed through a finishing process, and the waterproof finishing agent used is mainly composed of silicone polymers or fluorine-containing acrylate polymers. For example, Gao Futang et al. (Gao Futang et al. Synthesis and Application of Hydroxyl Silicone Oil Modified Acrylic Resin Leather Finishing Agent. Leather Science and Engineering. 2006,16(1):63-66) studied the synthesis of acrylic resin modified with hydroxyl silicone oil The study shows that the introduction of silicone oil can improve the water resistance of leather; An Qiufeng et al. (Film-forming properties, XPS characterization and hydrophobic properties of fluoroacryla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14B7/00
Inventor 廖学品冯亚娥石碧周建飞张文华曹明蓉
Owner SICHUAN UNIV
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