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Anti-creasing, waterproof and moisture-permeable pearly-luster polyurethane synthetic leather

A waterproof and moisture-permeable polyurethane technology, which is applied in the field of synthetic leather, can solve the problems of poor shaping of the back bending part, poor shaping of finished shoes, and general strength, and achieve the effects of improving adhesion, ensuring durability, and high elastic comfort

Inactive Publication Date: 2016-02-24
HANGZHOU FUYANG WEIWEN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional polyurethane synthetic leather for clothing not only has large wrinkles and average strength, but also is easy to wrinkle when stretching the shoe, and the shape of the finished shoe is poor; in addition, the bending part of the shoe is poorly shaped after wearing, which cannot fully meet the needs of today's sports and leisure shoes, children's shoes, etc. Processing and performance requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A pearlescent crease-resistant waterproof and moisture-permeable polyurethane synthetic leather, comprising a base cloth layer, an intermediate layer and a surface layer, characterized in that: the surface layer is made of the following raw materials in parts by weight:

[0020] Thermoplastic polyurethane elastomer 60-80, ethylene glycol phenyl ether 2-4, sodium dodecylsulfonate 2-4, polyacrylate 3-8, sulfurized castor oil 0.5-1, activated carbon 2-3, nitrocellulose 1 -2, polyurethane 1-2, ammonium polyacrylate 0.2-0.5, sodium polyphosphate 0.5-1, penetrant JFC2-5, dry colorant 2-4, modification additive 2-6; ethyl acetate Ester 10-16, butyl acetate 15-20, pearl powder 2-12, colored plastic particles 1-5;

[0021] Described intermediate layer is made from the raw material of following weight part:

[0022] Polycarbonate polyurethane resin 60-80, expanded graphite 2-4, quartz sand 1-2, dodecylbenzenesulfonic acid 2-6, fatty acid polyoxyethylene ester 1-2, magnesium oxid...

Embodiment 2

[0028] Prepare the preparation method of a kind of high-elastic fireproof polyurethane synthetic leather described in the above implementation one, comprising the following steps:

[0029] (1) Weigh the surface layer raw materials according to the ratio of Example 1, mix activated carbon, nitrocellulose, dry pigment, pearl powder and colored plastic particles, grind to 100-200 mesh, add an appropriate amount of 2-6% acetic acid Treat the solution at 40-50°C for 6-8h, add polyurethane, adjust the pH to neutral, freeze-dry and grind to 500-600 mesh, add the rest of the raw materials at 600-800r / min, stir at 40-60°C for 30- After 60 minutes, the surface layer slurry is obtained; the surface layer slurry is evenly coated on the release paper, and the surface layer is formed after drying at 100-120°C;

[0030] (2) Weigh the raw materials of the middle layer according to the proportion of Example 1, mix expanded graphite, quartz sand, magnesium oxide and aluminum hydroxide, then cal...

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PUM

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Abstract

The invention relates to anti-creasing, waterproof and moisture-permeable pearly-luster polyurethane synthetic leather. The synthetic leather comprises a base cloth layer, a middle layer and a surface layer, wherein a modifying additive is used in the surface layer for modification and comprises raw materials in parts by weight as follows: 0.5-1 part of tannic acid, 1-2 parts of mica powder, 0.5-1 part of citric acid, 4-8 parts of polyethylene glycol, 4-8 parts of glass fiber, 2-4 parts of sisal fiber, 2-4 parts of sorghum straw, 0.2-0.5 parts of a silane coupling agent KH550, 3-6 parts of triisopropanolamine, 25-50 parts of olive oil and 0.5-3 parts of sodium chloride. The anti-creasing, waterproof and moisture-permeable pearly-luster polyurethane synthetic leather has the advantages that the synthetic leather does not wrinkle and does not have creases after being bent, the camber is good during lasting for shoemaking, the bent part of a shoe is shaped well, the polyurethane synthetic leather has high physical mechanical strength and good durability, and shoe products made of the polyurethane synthetic leather have good anti-creasing performance, do not have creases and are comfortable.

Description

technical field [0001] The invention belongs to the field of synthetic leather and relates to a functional synthetic leather, in particular to a pearlescent anti-wrinkle waterproof and moisture-permeable polyurethane synthetic leather and a preparation method thereof. Background technique [0002] Polyurethane synthetic leather, referred to as PU synthetic leather, is a kind of imitation leather synthetic leather that uses various base fabrics as the base material, and coats the base material with polyurethane resin to endow it with various patterns, patterns, functions and handles. The traditional PU synthetic leather has poor resilience and poor wear resistance, which cannot meet the characteristics of synthetic leather. [0003] Nowadays, polyurethane synthetic leather products have been widely used in people's daily life, especially in the field of sports shoes. With the development of social economy and the improvement of people's living standards, people's demand for s...

Claims

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Application Information

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IPC IPC(8): D06N3/14
CPCD06N3/144D06N3/145D06N2203/068D06N2209/0838D06N2209/106D06N2209/1635D06N2209/1685D06N2213/03
Inventor 孙琴华
Owner HANGZHOU FUYANG WEIWEN ENVIRONMENTAL PROTECTION TECH CO LTD
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