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Polyurethane synthetic leather and preparation method thereof
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A technology for synthesizing leather and polyurethane, applied in chemical instruments and methods, synthetic resin layered products, coatings, etc., can solve the problem of leather wear resistance, poor scratch resistance, inability to naturally release negative ions, excessive X-ray radiation, etc. question
Active Publication Date: 2017-02-15
HESHAN XINKEDA ENTERPRISE CO LTD
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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, th
Method used
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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 100KG DMF 20KG EA or MEK 50KG Toner 5KG
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 100KG DMF 20KG EA or MEK 50KG Toner 10KG
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Abstract
The invention discloses polyurethane synthetic leather and a preparation method thereof. The polyurethane synthetic leather comprises a surface layer, a bonding layer and a base material which are connected in order. The preparation method comprises the following steps: S1, surface layer working liquid which is added with negative ion powder is coated on release paper, and a surface layer is formed by drying; S2: the bonding layer working liquid is coated on the surface layer, temperature is heated, the base material is pasted on the bonding layer working liquid, the whole leather is dried, and the surface layer and the base material are bonded to the bonding layer; S3, a piece of release paper is peeled. The polyurethane synthetic leather can automatically release negative ions and plant fresh smell; radiation quantity of alpha, beta, gamma, and X-ray accords with domestic standards and foreign standards; wear resistance performance, scraping resistance performance, and other performances are excellent.
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...
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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