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Preparation process of multi-layer composite automobile leather

A multi-layer compounding and preparation technology, applied in lamination, coating, layered products, etc., can solve the problems of no barrier protection, easy to be sunburned, leather aging, etc., to increase protection and sun protection, Good sun protection performance, the effect of improving anti-aging performance

Active Publication Date: 2020-06-16
YANGZHOU DERWINS PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Automotive interiors, such as steering wheel covers, leather seats, floor mats, etc., are one of the major applications of leather. However, because the car is exposed to the external environment for a long time, especially in the hot summer, automotive leather products are usually directly exposed to sunlight. In the middle, there is no barrier protection of clothing or shelters, and it is easy to be sunburned. Over time, it will lead to aging phenomena of leather, such as cracking, chalking or fading

Method used

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  • Preparation process of multi-layer composite automobile leather
  • Preparation process of multi-layer composite automobile leather
  • Preparation process of multi-layer composite automobile leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] see figure 1 Shown, the preparation method of sunscreen is:

[0032] S1. Add 0.23mol 2-amidinoacetate methyl ester hydrochloride, 10mmol sodium tert-butoxide and 1L solvent dioxane into the reaction kettle, replace the air in the reaction kettle with nitrogen gas, and add 0.1mol o-hydroxyl Benzaldehyde, heat up to 105°C and reflux while stirring, and continue to reflux for 2.5-3h. After the reaction, cool to room temperature, use a rotary evaporator to remove the solvent, and separate and purify by column chromatography. The chromatographic solution is petroleum ether: dichloro Methane: ethyl acetate = 10:1:3, to obtain intermediate A;

[0033] S2, the intermediate A prepared in step S1, 0.22mol 1-(2-pyrimidinyl)-4-hydroxypiperidine, 20g catalyst (sulfamic acid: zirconium tungstate mass ratio=4:1) and 1L solvent Add toluene into the reaction kettle, feed nitrogen to replace the air in the reaction kettle, raise the temperature to 115°C and reflux, and continue the ref...

Embodiment 2

[0036] The sunscreen lotion includes the following raw materials by weight: 7g of acrylate, 5g of fatty alcohol polyoxyethylene ether, 2g of sodium acetate, 1g of olive oil, 7g of sunscreen, 8g of polydimethylsiloxane, 20g of propylene glycol, and 100g of deionized water;

[0037] The preparation method of sunscreen lotion is:

[0038] (1) Add acrylate, fatty alcohol polyoxyethylene ether, sodium acetate, and deionized water into a mixer and stir to obtain A emulsion;

[0039] (2) Olive oil, sunscreen, propylene glycol are joined in another blender and stirred evenly to obtain B emulsion;

[0040] (3) Place emulsion A in a water bath at a temperature of 40°C, and add emulsion B to emulsion A dropwise while stirring. After the dropwise addition, cool down to 30°C and continue stirring for 5 hours to obtain a sunscreen emulsion.

Embodiment 3

[0042] The sunscreen lotion includes the following raw materials by weight: acrylate 10g, fatty alcohol polyoxyethylene ether 4g, sodium acetate 1.5g, olive oil 2g, sunscreen 9.5g, polydimethylsiloxane 7g, propylene glycol 25g, deionized water 100g ;

[0043] The preparation method of sunscreen lotion is:

[0044] (1) Add acrylate, fatty alcohol polyoxyethylene ether, sodium acetate, and deionized water into a mixer and stir to obtain A emulsion;

[0045] (2) Olive oil, sunscreen, propylene glycol are joined in another blender and stirred evenly to obtain B emulsion;

[0046](3) Place emulsion A in a water bath at a temperature of 45°C, and add emulsion B to emulsion A dropwise while stirring. After the dropwise addition, cool down to 30°C and continue stirring for 5 hours to obtain a sunscreen emulsion.

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Abstract

The invention discloses a preparation process of multi-layer composite automobile leather. The automobile leather sequentially comprises a sunscreen coating layer, a leather layer, a non-woven fabriclayer, a non-glue cotton layer and a knitted fabric layer from outside to inside. The preparation process of the automobile leather comprises the following steps: step 1, depilating, degreasing, softening and pickling dry leather or salt leather to obtain leather collagen fibers, tanning and dyeing the leather collagen fibers, washing the leather collagen fibers with water, taking the leather collagen fibers out of a drum, and carrying out stacking and drying in vacuum to obtain leather; step 2, uniformly spraying a sun-screening emulsion on the surface of the leather prepared in the step 1 ina spraying manner, and then performing heating and shaping to obtain leather containing a sun-screening coating layer; and step 3, sequentially stacking the leather containing a sunscreen coating layer prepared in the step 2, non-woven fabric, non-glue cotton and knitted fabric, and performing pressing, sewing and trimming to obtain the multi-layer composite automobile leather. The sunscreen emulsion is uniformly sprayed on the surface of the leather in a spraying manner, so that the protective property and the sunscreen property of the leather are improved, and the ageing resistance of the automobile leather is improved.

Description

technical field [0001] The invention belongs to the technical field of leather production, in particular to a preparation process of multilayer composite automobile leather. Background technique [0002] Leather is denatured and non-perishable animal skin obtained through physical and chemical processing such as depilation and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space. There is a special grain layer on the surface, which has natural grain and luster, and feels comfortable. Automotive interiors, such as steering wheel covers, leather seats, floor mats, etc., are one of the major applications of leather. However, because the car is exposed to the external environment for a long time, especially in the hot summer, automotive leather products are usually directly exposed to sunlight. Without the barrier protection of clothing or shelters, it is easy to be sunburned. Over time, it will lead to aging phenomena of leather, such...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/10B05D7/12B05D7/24B32B5/02B32B9/02B32B9/04B32B33/00C07D401/14
CPCB32B37/10B32B33/00B32B9/025B32B5/026B32B5/022B32B9/047B32B9/02B05D7/12B05D7/24C07D401/14B32B2605/08
Inventor 刘顺兆刘传庆陈意徐蓉吴丽萍
Owner YANGZHOU DERWINS PLASTICS TECH
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