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A kind of polyurethane synthetic leather and preparation method thereof

A technology for synthesizing leather and polyurethane, applied in chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problem of leather wear resistance, poor scratch resistance, excessive X-ray radiation, and inability to naturally release negative ions and other problems, to achieve the effect of improving wear resistance and scratch resistance, and smooth hand feel

Active Publication Date: 2018-12-07
HESHAN XINKEDA ENTERPRISE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing leather products do not contain negative ions, or although the newly developed leather products contain a large amount of negative ions, they cannot naturally release negative ions, and the radiation levels of α, β, γ and X-rays are seriously exceeded. The wear resistance and scratch resistance of leather are poor

Method used

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  • A kind of polyurethane synthetic leather and preparation method thereof
  • A kind of polyurethane synthetic leather and preparation method thereof
  • A kind of polyurethane synthetic leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A polyurethane synthetic leather, comprising a surface layer, an adhesive layer and a base material, the surface layer is made by coating and drying the surface layer working solution, and the adhesive layer bonds the surface layer and the base material , the adhesive layer is heated on the surface layer by coating the adhesive layer working liquid, so that the base material is pasted on the adhesive layer working liquid and dried and bonded; only the surface The layer working liquid is added with negative ion powder.

[0031] 1) The formula of the surface layer working solution is as follows in Table 1:

[0032] Table 1: Surface layer working solution formula

[0033]

[0034] 2) The formula of the adhesive layer working fluid is as follows in Table 2:

[0035] Table 2: Adhesive Layer Working Solution Formula

[0036]

[0037]

[0038] In the formulas of the surface layer working fluid and the adhesive layer working fluid, DMF is dimethylformamide, EA is et...

Embodiment 2

[0044] With reference to embodiment 1, different from embodiment 1,

[0045] 1) The formula of the surface layer working solution is as follows in Table 3:

[0046] Table 3: Surface layer working solution formula

[0047]

[0048] 2) The formula of the adhesive layer working fluid is as follows in Table 4:

[0049] Table 4: Adhesive Layer Working Solution Formula

[0050] Hydrolysis-resistant dry-process adhesive layer polyurethane resin

Embodiment 3

[0052] With reference to embodiment 1, different from embodiment 1,

[0053] 1) The formula of the surface layer working solution is as follows in Table 5:

[0054] Table 5: Surface layer working solution formula

[0055]

[0056]

[0057] 2) The formula of the adhesive layer working fluid is as follows in Table 6:

[0058] Table 6: Adhesive Layer Working Fluid Formula

[0059] Hydrolysis-resistant dry-process adhesive layer polyurethane resin

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Abstract

Disclosed is a polyurethane synthetic leather and a preparation method therefor. The polyurethane synthetic leather includes a face layer, an adhesive layer and a substrate sequentially connected. The preparation method therefor includes the following steps: S1, applying a face layer working solution, with a negative ion powder added, on a release paper, and drying same to form a face layer; S2, applying an adhesive layer working solution on the face layer, then heating same, fitting the substrate on the adhesive layer working solution, and drying the overall body, so as to adhere the face layer and the substrate with the adhesive layer; and S3, stripping the release paper. The prepared polyurethane synthetic leather can naturally release negative ions and has the fresh smell of plants. α, β, γ and X-ray radiation quantities comply with domestic and foreign standards. Furthermore, properties such as wear resistance and scratch resistance are good.

Description

technical field [0001] The invention relates to the technical field of leather materials, in particular to a polyurethane synthetic leather and a preparation method thereof. Background technique [0002] With the improvement of human civilization and production activities, especially the increasing degree of industrialization, the pollution is becoming more and more serious, especially people yearn for an elegant environment, so various environmentally friendly materials and functional materials emerge as the times require. Negative ions have been paid more and more attention by scientists to improve people's living environment. Negative air ions are called "air vitamins" or "longevity", and the number of negative ions to maintain people's health is: 1000-2000 / cm 3 . People who live and work in modern air-conditioned buildings for a long time often feel bored, drowsy, fatigue, nausea, headache, dizziness, work efficiency and physical health are significantly reduced. Studi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14D06N3/00
CPCB32B27/18C08K3/04C08K3/20D06N3/14
Inventor 任志军
Owner HESHAN XINKEDA ENTERPRISE CO LTD