Semi-silicon synthetic leather and preparation method thereof
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A technology of synthetic leather and silicon surface, applied in the field of synthetic leather, can solve the problems of restricting commercialization, high cost of raw materials, poor wear resistance and scratch resistance, and achieve the effect of cost reduction, cost reduction and fine hand feeling
Pending Publication Date: 2018-12-21
江苏纳恩新材料有限公司
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However, due to the high cost of raw materials, the price of silicone synthetic leather far exceeds that of ordinary PU or PVC. Secondly, silicone synthetic leather also has defects such as poor wear resistance and scratch resistance, such as patents 201711124970.2, 201410091143.8, 201710888463.X, which are greatly improved. constraining its commercialization
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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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Embodiment 1
[0041] A semi-silicon synthetic leather, each component of the organic silicon surface agent raw material is weighed according to the mass ratio of 30 parts of organic silicon-based glue, 5 parts of Si-H based crosslinking agent, 0.01 part of inhibitor, (filler 1 part) ) 7 parts of matting powder, (filler 2) 7 parts of spherical silica micropowder, 10 parts of coupling agent, 50 parts of organic solvent, add planetary mixer at 500 rpm and stir for 2h, add 0.3 part of platinum catalyst, 5 parts of accelerator After stirring at 500 rpm for 30 min, take it out for use.
[0042] The surface agent for semi-silicon synthetic leather prepared above is directly printed on the surface of polyurethane synthetic leather by using gravure printing technology, and the printing thickness is 10 μm. Silicon synthetic leather.
Embodiment 2
[0044] The difference between this example and Example 1 is that the proportions of the components of the raw material for the surface treatment agent for semi-silicon synthetic leather are as follows:
[0045] Silicone based gel 80
[0046] Si-H-based crosslinking agent 25
[0047] Platinum Catalyst 1
[0048] Inhibitor 0.001
[0049] (filler 1) silicone resin powder 5
[0050] (filler 2) silica 10
[0051] Coupling agent 20
[0052] Accelerator 8
[0053] Organic solvent 0
Embodiment 3
[0055] The difference between this example and Example 1 is that the proportions of the components of the raw material for the surface treatment agent for semi-silicon synthetic leather are as follows:
[0056] Silicone based gel 50
[0057] Si-H-based crosslinking agent 20
[0058] Platinum catalyst 0.1
[0059] Inhibitor 0.001
[0060] (filler 1) silicone resin powder 10
[0061] (filler 2) magnesium hydroxide 10
[0062] Coupling agent 25
[0063] Accelerator 2
[0064] Organic Solvents 40
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Abstract
The invention provides semi-silicon synthetic leather and a preparation method thereof. The semi-silicon synthetic leather sequentially comprises an organosilicone surfacing layer and a polyurethane (PU) synthetic leather layer from top to bottom, wherein the organosilicone surfacing layer is prepared from the following main raw materials: organosilicone-based glue, a crosslinking agent, a platinum catalyst, an inhibitor, filler, a coupling agent, a promoter and an organic solvent; the semi-silicon synthetic is obtained by mixing the raw materials according to an appropriate proportion, and then adopting a gravure printing technology to print the mixed raw material on the surface of PU synthetic leather. Compared with the pure organosilicone synthetic leather, the cost of the semi-siliconsynthetic leather prepared by the method is greatly reduced; furthermore, compared with the traditional PU leather, the semi-silicon synthetic leather maintains the fine and smooth hand feeling as well as good anti-fouling property, mould-proof property and weather resistance of the organosilicone synthetic leather.
Description
technical field [0001] The invention belongs to the technical field of synthetic leather, and particularly relates to a semi-silicon synthetic leather and a preparation method thereof. Background technique [0002] At present, the market demand for polyurethane synthetic leather is huge, but 90% of our country is medium and low-grade products, which cannot meet the growing demand for high-grade leather in the domestic market. In view of the problem that the physical properties and hand feel of polyurethane synthetic leather on the market are increasingly unable to meet people's needs, synthetic leather surface treatment agents play a crucial role in the field of synthetic leather. Traditionally, polyurethane surface agents are new materials made of special additives and ordinary PU resins through compounding or synthesis processes, which endow synthetic leather with waterproof, wear-resistant, scratch-resistant, stain-resistant and weather-resistant properties. However, add...
Claims
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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