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Preparation method of water-based low-temperature printed environment-friendly polyurethane synthetic leather

A polyurethane and synthetic leather technology, used in textiles, papermaking, clothing, footwear, etc., can solve the problems of poor durability, material cannot be stored for a long time, and high cost of material loss, and achieves increased durability and good durability. , the effect of reducing production energy consumption

Active Publication Date: 2021-04-02
ANHUI ANLI MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, compared with the mature solvent-based printing system, the water-based printing system often has poor durability such as water resistance, heat resistance and aging resistance. It is necessary to add a water-based curing agent to increase the cross-linking degree of the printing layer to ensure the physical properties of the product.
Commonly used water-based cross-linking agents include aziridine cross-linking agents and water-based isocyanate cross-linking agents. Aziridine cross-linking agents can be cured slowly at room temperature. The used materials cannot be stored for a long time, and the loss cost of materials is very high. The curing temperature of the crosslinking agent needs to be above 150°C, which requires a lot of energy consumption
[0005] Energy saving and environmental protection is a major issue that modern society must face. Printing and finishing work generally needs to be cured at a higher temperature in an oven, which consumes a lot of energy.

Method used

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  • Preparation method of water-based low-temperature printed environment-friendly polyurethane synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Coat polyurethane YF-0304A surface layer slurry on the release paper with a coating thickness of 0.15mm and dry at 115°C for 1.5min to obtain a surface layer composite film; the components of the polyurethane slurry are composed in parts by mass As follows, YF-0304A: 100, anti-yellowing additive AL-UV: 0.5, 6080B: 1, dark blue paste SL-500: 8.

[0027] 2. Evenly coat the adhesive layer slurry on the surface layer composite film, the coating thickness is 0.25mm, and dry at 90°C for 2 minutes, and the coating retains a certain degree of adhesion; the polyurethane slurry components are in parts by mass The number composition is as follows: polyol BasfA material 100, isocyanate AL-5040B material 50, organic gold tin catalyst AL-5508 0.5, amine catalyst AL-2958: 0.1.

[0028] 3. After laminating the cloth base material on the adhesive layer, dry it at 145° C. for 4 minutes, peel off the release paper after drying and aging, and obtain a semi-finished leather crust.

[00...

Embodiment 2

[0031] 1. Coat polyurethane YF-0304A surface layer slurry on the release paper with a coating thickness of 0.15mm and dry at 115°C for 1.5min to obtain a surface layer composite film; the components of the polyurethane slurry are composed in parts by mass As follows: YF-0304A: 100, AL-UV: 0.5, 6080B: 1, dark blue paste SL-500: 8.

[0032] 2. Evenly coat the adhesive layer slurry on the surface layer composite film, the coating thickness is 0.25mm, and dry at 90°C for 1min, and the coating retains a certain degree of adhesion; the polyurethane slurry components are in parts by mass The number composition is as follows: polyol BasfA material 100, isocyanate AL-5040B material 50, organotin AL-5508 catalyst 0.5, amine catalyst AL-29580.1.

[0033] 3. After laminating the cloth base material on the adhesive layer, dry it at 130° C. for 6 minutes, peel off the release paper after drying and aging, and obtain a semi-finished leather crust.

[0034] 4. Print polyurethane slurry on th...

Embodiment 3

[0036] 1. Coat the polyurethane surface layer slurry on the release paper, the coating thickness is 0.15mm, and dry at 115°C for 1.5min to obtain the surface layer composite film; the components of the polyurethane slurry are composed as follows in parts by mass: YF -0304A: 100, AL-UV: 0.5, 6080B: 1, dark blue paste SL-500: 5.

[0037] 2. Evenly coat the adhesive layer slurry on the surface layer composite film, the coating thickness is 0.25mm, and dry at 90°C for 2 minutes, and the coating retains a certain degree of adhesion; the polyurethane slurry components are in parts by mass The number composition is as follows: polyol BasfA material 100, isocyanate AL-5040B material 50, organotin catalyst AL-5508:0.5, amine catalyst AL-2958:0.1.

[0038] 3. After laminating the cloth base material on the adhesive layer, dry it at 145° C. for 4 minutes, peel off the release paper after drying and aging, and obtain a semi-finished leather crust.

[0039] 4. Print polyurethane slurry on t...

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Abstract

The invention discloses a preparation method of water-based low-temperature printed environment-friendly polyurethane synthetic leather. The preparation method comprises the following steps of coatingrelease paper with polyurethane surface layer slurry to obtain a surface layer composite film; coating the surface layer composite film with bonding layer slurry, and drying until the coating retainscertain adhesion; laminating the obtained coating with synthetic leather base cloth, drying and curing, and stripping the release paper to obtain semi-finished crust leather; and printing a waterborne polyurethane coating on the surface of the semi-finished crust leather, and drying and curing to obtain a finished product. A water-based closed low-temperature deblocking curing agent is adopted, ahigh-solid printing process is combined, and a cross-linked polymer network is formed on the surface of the synthetic leather, so that the durability of the product is improved, the stereoscopic impression of patterns of the product is strong, and the production process is low in energy consumption and low in pollution.

Description

technical field [0001] The invention relates to a preparation process of functional polyurethane, in particular to a preparation method of water-based low-temperature printed polyurethane synthetic leather, which belongs to the technical field of polyurethane synthetic leather. Background technique [0002] Polyurethane (PU) synthetic leather is a new type of polymer composite material with special properties. It is widely used in men's and women's shoes, fashion shoes, work shoes, labor insurance shoes, children's shoes, sports and leisure shoes, sofa furniture, office chairs, massage chairs , handbags, documents, stationery, ball games and sporting goods, electronic packaging, interior and engineering decoration, automotive interiors and other fields. [0003] In order to meet the requirements of different consumer groups for product appearance and quality, it needs to be printed and finished. However, the finishing agents used in printing are generally solvent-based syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/145D06N3/146D06N3/147D06N3/0097D06N3/0077D06N2211/14D06N2211/106D06N2211/20D06N2211/28D06N2209/1685Y02P70/62
Inventor 笪丽红尹学明梁光波盛海波张宁华刘志球阮华功常玉水郭静文赵勃吴波
Owner ANHUI ANLI MATERIAL TECH
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