Thermal conductive polyurethane synthetic leather production method

A production method and technology of synthetic leather, applied in the direction of textiles and papermaking, can solve the problems affecting the range of use of polyurethane synthetic leather, poor thermal conductivity, etc., and achieve good heat transfer and thermal conductivity, good wear resistance, and good drape.

Inactive Publication Date: 2015-02-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal conductivity of traditional polyurethane synthetic leather is poor, which affects the scope of use of polyurethane synthetic leather.

Method used

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  • Thermal conductive polyurethane synthetic leather production method
  • Thermal conductive polyurethane synthetic leather production method
  • Thermal conductive polyurethane synthetic leather production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (a) Select viscose-cotton blended plain weave as the base fabric;

[0043] (b) coating wet-process polyurethane slurry on the base cloth, the coating slurry is prepared according to the following mass ratio:

[0044]

[0045] Put the material into the stirring tank, stir with a high-speed disperser for 30 minutes, centrifuge and defoam for 3 minutes, and then scrape 0.8mm;

[0046] (c) Solidification: DMF concentration 20%, temperature 25°C, time 3min;

[0047] (d) Water washing: temperature 60°C, pressure 2kg, time 10min;

[0048](e) Expansion drying: the width is 138cm~145cm, the temperature is 80~130℃, and the time is 3min;

[0049] (f) Dry veneer: The polyurethane surface layer is prepared according to the following mass ratio:

[0050]

[0051] Put the material into the stirring tank, stir with a high-speed disperser for 30 minutes, centrifuge and defoam for 3 minutes, and then scrape 0.2mm;

[0052] (g) Surface finishing: roller coating of water-based po...

Embodiment 2

[0054] (a) Choose nylon plain weave as the base fabric;

[0055] (b) coating wet-process polyurethane slurry on the base cloth, the coating slurry is prepared according to the following mass ratio:

[0056]

[0057] Put the material into the stirring tank, stir with a high-speed disperser for 30 minutes, centrifuge and defoam for 3 minutes, and then scrape 0.8mm;

[0058] (c) Solidification: DMF concentration 20%, temperature 25°C, time 3min;

[0059] (d) Water washing: temperature 60°C, pressure 2kg, time 10min;

[0060] (e) Expansion drying: the width is 138cm~145cm, the temperature is 80~130℃, and the time is 3min;

[0061] (f) Dry veneer: The polyurethane surface layer is prepared according to the following mass ratio:

[0062]

[0063] Put the material into the stirring tank, stir with a high-speed disperser for 30 minutes, centrifuge and defoam for 3 minutes, and then scrape 0.2mm;

[0064] (g) Surface finishing: roller coating of water-based polyurethane surfa...

Embodiment 3

[0066] (a) Choose nylon plain weave as the base fabric;

[0067] (b) coating wet-process polyurethane slurry on the base cloth, the coating slurry is prepared according to the following mass ratio:

[0068]

[0069] Put the material into the stirring tank, stir with a high-speed disperser for 30 minutes, centrifuge and defoam for 3 minutes, and then scrape 0.8mm;

[0070] (c) Solidification: DMF concentration 22%, temperature 25°C, time 3min;

[0071] (d) Water washing: temperature 60°C, pressure 2kg, time 10min;

[0072] (e) Expansion drying: the width is 138cm~145cm, the temperature is 80~130℃, and the time is 3min;

[0073] (f) Dry veneer: The polyurethane surface layer is prepared according to the following mass ratio:

[0074]

[0075] Put the material into the stirring tank, stir with a high-speed disperser for 30 minutes, centrifuge and defoam for 3 minutes, and then scrape 0.2mm;

[0076] (g) Surface finishing: roller coating of water-based polyurethane surfa...

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Abstract

The invention discloses a thermal conductive polyurethane synthetic leather production method which comprises the following process: selecting base cloth, coating with wet process polyurethane slurry, solidifying, washing with water, expanding and drying, veneering by dry method, and finishing the surface; first of all, the base cloth is coated with the wet process polyurethane slurry with conductive filler; then, the coated substrate is solidified by wet method for adjusting of bubble hole structure and expanding and drying for production of thermal conductive and breathable Base; finally thermal conductive breathable polyurethane synthetic leather is produced by veneering by dry method and finishing the surface of the thermal conductive and breathable Base. The thermal conductive polyurethane synthetic leather prepared by the method is relatively high in thermal conductivity coefficient, the thermal conductivity coefficient reaches 0.06-0.09W .M <-1> .K <-1>, compared with traditional synthetic leather, the thermal conductivity is increased by more than 30%, and the bubble hole is even, delicate, soft in hand feeling, good in drapability, air and moisture permeability, similar to natural leather in apparent and hand feeling, and simple in manufacturing process.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather manufacture, and relates to a production method of polyurethane synthetic leather, in particular to a production method of heat-conductive polyurethane synthetic leather. Background technique [0002] Polyurethane synthetic leather has excellent wear resistance, good tear strength and elongation, and has the characteristics of fullness, comfort, good recovery, rich patterns, and moderate price. It has become the best substitute for natural leather. With the development of social economy and the improvement of people's living standards, there is an increasing demand for thermally conductive synthetic leather, especially in clothing leather, mobile phone casings, and packaging leather for electronic devices. However, the thermal conductivity of traditional polyurethane synthetic leather is poor, which affects the scope of use of polyurethane synthetic leather. Contents of the invention ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14B32B27/40
CPCD06N3/14D06N3/0043D06N3/0061D06N3/0063D06N3/007D06N3/0097D06N2205/24D06N2209/062D06N2209/123D06N2211/28
Inventor 王学川冯见艳万鹏鹏李辉罗晓民王景平
Owner SHAANXI UNIV OF SCI & TECH
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