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Artificial leather capable of being directly embossed and preparation method thereof

An artificial leather and embossing technology, applied in the field of artificial leather, can solve problems such as unsatisfactory decorative effects, difficulty in carrying patterns, and softening of decorative lines

Active Publication Date: 2021-08-31
佛山市高明尚昂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using some soft substrates, it is often difficult to carry the pattern
The hard substrate is also easy to partially soften the decorative lines due to heating during the bonding process, and the decorative effect is not ideal.

Method used

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  • Artificial leather capable of being directly embossed and preparation method thereof
  • Artificial leather capable of being directly embossed and preparation method thereof
  • Artificial leather capable of being directly embossed and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] refer to figure 1 , the invention provides a kind of preparation method of directly embossed artificial leather, it comprises the following steps:

[0047] S1: Mix grafted modified isocyanate, polypolyol, catalyst, filler, and thermoplastic powder to obtain a compound;

[0048] Specifically, S1 includes:

[0049] S11: react isocyanate, polypolyol and catalyst at 70-120°C to obtain grafted modified isocyanate;

[0050] Wherein, the formula of the grafted modified isocyanate includes the following raw materials in parts by weight: 80-100 parts of isocyanate, 80-120 parts of polypolyol, and 0.05-0.5 part of catalyst.

[0051] Among them, the isocyanate can be selected from 4,4-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, p-isopropylphenyl isocyanate and by introducing uretdione, amino methyl 4,4-diphenylmethane diisocyanate, toluene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, p-isopropyl ...

Embodiment 1

[0083] This embodiment provides a method for preparing artificial leather that can be directly embossed, specifically including:

[0084] (1) Mix 18 parts of grafted modified isocyanate, 82 parts of polypolyol, 0.08 part of catalyst, 25 parts of filler, 45 parts of thermoplastic powder, and 0.2 part of foam stabilizer (LM2003, Xi'an Leiming Chemical Technology Co., Ltd.) to obtain Mixture;

[0085] Wherein, the polypolyol is polyester polyol (C1120, Xi'an Leiming Chemical Technology Co., Ltd.), and the filler is Shuangfei powder.

[0086] Among them, the graft modified isocyanate is prepared by reacting 100 parts of TDI with 80 parts of polyester polyol and 0.2 parts of catalyst at 110°C.

[0087] (2) Coating the mixture on release paper and heating at 100°C to gel the mixture;

[0088] (3) Bond the substrate (sandwich, Shenzhen Guanghuida Leather Co., Ltd.) to the gelled mixture to obtain an intermediate material;

[0089] (4) heating and solidifying the intermediate mater...

Embodiment 2

[0095] This example provides a method for preparing artificial leather that can be directly embossed. The difference from Example 1 is that polyether polyol (EP330, Xi'an Leiming Chemical Technology Co., Ltd.) is used as the polypolyol in this example.

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Abstract

The invention discloses a preparation method of artificial leather capable of being directly embossed. The preparation method comprises the following steps of mixing graft modified isocyanate, polyol, a catalyst, a filler and thermoplastic plastic powder to obtain a mixture; and coating release paper with the mixture, performing heating for gelatinization, adhering the release paper to a substrate, performing curing, cooling and separating the release paper, performing heating and embossing, and performing cooling to obtain the finished product. Correspondingly, the invention further discloses the artificial leather capable of being directly embossed. The artificial leather disclosed by the invention can be directly embossed and can be directly cut for use after being embossed. Meanwhile, decorative lines obtained through embossing are good in plumpness, high in stereoscopic impression and good in setting effect.

Description

technical field [0001] The invention relates to the technical field of artificial leather, in particular to a directly embossable artificial leather and a preparation method thereof. Background technique [0002] Polyurethane synthetic leather has excellent wear resistance, solvent resistance, aging resistance, etc., and has excellent hand feeling and soft surface gloss. It is the most ideal substitute for natural leather. It can be widely used in footwear, leather bags, sofas, automotive interiors, etc. field. [0003] Polyurethane synthetic leather is generally divided into solvent-based and solvent-free. Among them, solvent-based polyurethane synthetic leather needs to introduce a large amount of solvents during the production process, causing serious environmental pollution. Solvent-free polyurethane synthetic leather does not introduce organic solvents, and has the advantages of being green and environmentally friendly. However, since the solvent-free polyurethane syn...

Claims

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Application Information

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IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0097D06N3/0077D06N3/147D06N3/0059
Inventor 陈尚文陈尚明陈尚德陈池光
Owner 佛山市高明尚昂科技有限公司
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