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Preparation method of aqueous/solvent-free mirror plane PU synthetic leather

A synthetic leather and solvent-free technology, applied in textiles and papermaking, etc., can solve the problems of mirror leather's hydrolysis resistance, peel strength, folding strength, unfavorable handling, complicated equipment, etc., and achieve excellent ductility and simple process Feasible, good physical effect

Inactive Publication Date: 2018-12-21
HUAIAN KAIYUE TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can provide mirror leather with transparent surface, high surface brightness and no creases, the hydrolysis resistance, peel strength and folding strength of mirror leather need to be strengthened.
In addition, a medium-wave infrared heating device is installed before the first-coating and second-coating ovens. The equipment is complicated, expensive and unfavorable for manipulation.

Method used

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  • Preparation method of aqueous/solvent-free mirror plane PU synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of water-based / solvent-free mirror PU synthetic leather, the specific steps are as follows:

[0027] Step 1. Prepare water-based polyurethane resin surface layer

[0028] 1) Prepare surface layer slurry:

[0029] Weigh 100 parts by mass of silicone modified water-based polyurethane surface layer resin, 0.5 parts by mass of silicone hand feeling agent, 0.5 parts by mass of silicone wetting and leveling agent, 10 parts by mass of water-based color paste, and 0.2 parts by mass of dispersant to prepare a viscosity It is the surface layer slurry of 2300mpa.s.

[0030] 2) Coated surface layer:

[0031] The prepared surface layer slurry will be coated on the release paper as required, and the specific requirements are as follows:

[0032] The coating amount is 100g / m2, the thickness of the coating film is 10 microns, and the number of coating times is 1 time;

[0033] 3) Oven drying:

[0034] Enter the oven at a speed of 5-20m / min for drying, and the temperatu...

Embodiment 2

[0048] Step 1. Prepare water-based polyurethane resin surface layer

[0049] 1) Prepare surface layer slurry:

[0050] Weigh 100 parts by mass of silicone modified water-based polyurethane surface layer resin, 0.5 parts by mass of silicone hand feeling agent, 0.5 parts by mass of silicone wetting and leveling agent, 10 parts by mass of water-based color paste, and 0.2 parts by mass of dispersant to prepare a viscosity It is the surface layer slurry of 2300mpa.s.

[0051] 2) Coated surface layer:

[0052] The prepared surface layer slurry will be coated on the release paper as required, and the specific requirements are as follows:

[0053] The coating amount is 100g / m2, the thickness of the coating film is 10 microns, and the number of coating times is 1 time;

[0054] 3) Oven drying:

[0055] Enter the oven at a speed of 5-20m / min for drying, and the temperature in the oven is 70-140°C.

[0056] Step 2. Preparation of solvent-free bonding layer

[0057] 1) Prepare bondi...

Embodiment 3

[0069] Preparation of water-based / solvent-free mirror PU synthetic leather, the specific steps are as follows:

[0070] Step 1. Prepare water-based polyurethane resin surface layer

[0071] 1) Prepare surface layer slurry:

[0072] Weigh 100 parts by mass of silicone modified water-based polyurethane surface layer resin, 0.5 parts by mass of silicone hand feeling agent, 0.2 parts by mass of silicone wetting and leveling agent, 10 parts by mass of water-based color paste, and 0.2 parts by mass of dispersant, and prepare a viscosity It is the surface layer slurry of 2300mpa.s.

[0073] Step 2. Preparation of solvent-free bonding layer

[0074] 1) Prepare bonding layer slurry:

[0075] Take 65 parts by mass of JF-NS-6060A and 35 parts by mass of JF-NS-6030B, mix well and set aside.

[0076] 2) Apply the bonding layer:

[0077] The prepared adhesive layer will be coated on the surface layer of the dried step 1 as required, and the specific requirements are as follows:

[007...

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Abstract

The invention discloses a preparation method of aqueous / solvent-free mirror plane PU synthetic leather. The preparation method comprises the following steps: successively coating a waterborne polyurethane resin surface layer and a solvent-free polyurethane resin bonding layer to mirror plane release paper; then laminating a waterborne leather semi-product; drying and sizing the semi-product to separate paper and leather, and carrying out inspection and packaging. The process is simple and feasible and is easy for industrial production. The mirror plane PU synthetic leather disclosed by the invention is free of VOC, non-toxic and environmentally friendly. The leather is 30% brighter than mirror plane paper, and the number of use times of the mirror plane paper can be increased obviously. The synthetic leather is good in physical property and hydrolysis resistant for 3-8 years, the peel strength is 6-8 kg, the folding resistance is 200 thousand times or more at a constant temperature of20 DEG C and 100 thousand times or more at 15 DEG C below zero. The leather is good in sizing property and free of kink marks.

Description

technical field [0001] The invention relates to a polyurethane synthetic leather, in particular to a preparation method of water-based / solvent-free mirror-surface PU synthetic leather. Background technique [0002] Polyurethane synthetic leather, because its performance is close to genuine leather, has been rapidly developed in China. Improving product quality, developing new products, improving production technology and continuously reducing costs have become the direction and goal of various polyurethane synthetic leather manufacturers. [0003] Mirror leather refers to a type of PU synthetic leather produced with mirror release paper. It is named for its smooth and bright surface like a mirror. This synthetic leather is mainly used in women's clothing, shoes and handbags. It is popular among women for its beautiful color. Customers of all ages, so it has a lasting vitality. [0004] The Chinese patent with publication number 102535187A discloses a method for making non-c...

Claims

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Application Information

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IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/0061D06N3/0077D06N3/0097D06N3/143D06N3/145D06N2205/023D06N2209/0838D06N2211/28
Inventor 李桂军李浩扬倪伶俐冯会生张锋
Owner HUAIAN KAIYUE TECH DEV