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UV curing technology based solvent-free synthetic leather manufacturing method

A technology of curing technology and manufacturing method, which is applied in the field of synthetic leather manufacturing to achieve the effects of simple production process, unique structure and low energy consumption

Active Publication Date: 2016-01-06
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of UV curing technology in the manufacture of synthetic leather is still rarely reported

Method used

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  • UV curing technology based solvent-free synthetic leather manufacturing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 The manufacture of solvent-free synthetic leather for sofa

[0038] (1) Preparation of UV curable slurry and water-based surface layer slurry (parts by weight)

[0039] a) Preparation of UV curing slurry: 100 parts of IPDI type solvent-free UV curing polyurethane, 5 parts of photoinitiator 2-hydroxy-2-methyl-1-phenylacetone, 5 parts of color paste, 3 parts of light calcium carbonate 1 part, 1 part of montmorillonite, 5 parts of lignin powder, 3 parts of Span-80 surfactant and mix well;

[0040] b) Preparation of water-based surface layer slurry: 100 parts of polyurethane for aromatic water-based surface layer with a modulus of 60Mpa and a solid content of 40%, 0.2 parts of DC-57 water-based leveling agent, 20 parts of water-based color paste, Foamex840 water-based 0.1 part of defoamer, 0.5 part of water-based polyurethane thickener, and 5 parts of Bayhydur3100 crosslinking agent are mixed evenly to prepare a surface layer slurry with a viscosity of 3000mPa...

Embodiment 2

[0047] The manufacture of embodiment 2 clothing solvent-free synthetic leather

[0048] (1) Preparation of UV curable slurry and water-based surface layer slurry (parts by weight)

[0049] a) Preparation of UV curing slurry: 100 parts of HDI solvent-free UV curing polyurethane, 2 parts of photoinitiator 1-hydroxy-1-cyclohexyl benzophenone, 3 parts of color paste, 5 parts of montmorillonite, Tween-60 0.5 part of type surfactant is mixed evenly;

[0050] b) Preparation of water-based surface layer slurry: 100 parts of polyurethane for aliphatic water-based surface layer with 50Mpa and 30% solid content, 0.5 parts of TegoGlide410 water-based leveling agent, 20 parts of water-based color paste, 0.3 parts of BYK028 water-based defoamer 1 part, 0.15 parts each of water-based polyurethane and acrylic thickener, and 2 parts of XR-500 cross-linking agent, mixed evenly, and made into a surface layer slurry with a viscosity of 2500mPa.s (temperature 25°C);

[0051] (2) Base cloth pretr...

Embodiment 3

[0057] Embodiment 3 Manufacture of solvent-free synthetic leather for automotive interior

[0058] (1) Preparation of UV curable slurry and water-based surface layer slurry (parts by weight)

[0059] a) Preparation of UV curable slurry: H 12 100 parts of MDI type solvent-free UV curing polyurethane, 3 parts of photoinitiator isopropyl thioxanthone, 4 parts of water-based color paste, 2 parts of fumed silica, 2 parts of carbon black, 4 parts of lignin powder, Pingpingjia OS Mix 1.5 parts of -15 surfactant evenly;

[0060] b) Preparation of water-based surface layer slurry: 100 parts of polyurethane for aliphatic water-based surface layer with a modulus of 55Mpa and a solid content of 35%, 0.3 parts of Coatsil7602 type water-based leveling agent, 25 parts of water-based color paste, DefoamerA13 type water-based defoaming 0.2 parts of water-based acrylic thickener, 0.4 parts of water-based acrylic thickener, and 4 parts of SAC-100 cross-linking agent are mixed evenly to prepare...

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Abstract

The invention discloses a UV curing technology based solvent-free synthetic leather manufacturing method. The method is characterized by: firstly coating a pre-treated base cloth with a photosensitive group containing solvent-free polyurethane slurry, and performing ultraviolet curing to obtain a semi-finished product; and then taking waterborne polyurethane as the surface layer resin, and conducting dry (i.e. transfer coating) overlaying to obtain the environment friendly polyurethane synthetic leather product. The method provided by the invention adopts the UV curing technology to coat the base cloth with the polyurethane free of any organic solvent and performs UV curing to obtain the synthetic leather product. The method has the characteristics of high curing efficiency, environmental friendliness, low energy consumption and the like. By adopting solvent-free UV curable resin and waterborne polyurethane to substitute the traditional solvent type polyurethane, organic solvent pollution is eliminated from the source, the organic solvent source is saved, the product does not contain VOC, and the ecological level and international market competitiveness of synthetic leather are enhanced.

Description

technical field [0001] The invention belongs to the field of synthetic leather manufacturing, and in particular relates to a method for manufacturing solvent-free synthetic leather based on UV curing technology. Background technique [0002] my country is a big producer and consumer of synthetic leather. According to statistics, my country's artificial leather and synthetic leather production accounted for 76% of the world's total in 2014, and the production of artificial leather and synthetic leather by enterprises above designated size reached 3.1426 million tons, totaling 6.28 billion square meters. [0003] In recent years, with the continuous improvement of people's living standards, consumers' demand for high-performance, high-quality, and high-environmental ecological synthetic leather has shown a continuous upward trend. The annual domestic demand for high-end ecological synthetic leather has reached more than 200 million square meters . At the same time, European ...

Claims

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Application Information

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IPC IPC(8): D06N3/14
Inventor 范浩军章培昆鲍亮陈意颜俊田赛琦石碧
Owner SICHUAN UNIV
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