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A medium-hard, high-cold-resistant, heat-resistant and anti-blocking smooth mirror surface layer polyurethane resin and its preparation method
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A polyurethane resin, slip-type technology, applied in textiles and papermaking, etc., can solve the problem of difficult to take into account, and achieve the effect of high product grade, good heat blocking resistance and high cold resistance
Active Publication Date: 2018-08-28
HEFEI ANLI POLYURETHANE NEW MATERIAL
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a kind of polyurethane resin with medium hardness, high cold resistance, heat resistance and adhesion smooth mirror surface layer and its preparation method, which solves the problem that the existing polyurethane resin is difficult to take into account flexibility, cold resistance and prevention of adhesion And the problem of the smoothness of the leather surface
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Embodiment 1
[0021] A medium-hard, high-cold-resistant, heat-resistant, anti-adhesive, smooth mirror surface layer polyurethane resin, which is mainly prepared from the following components in weight ratio:
[0022]
[0023] A kind of preparation method of medium-hard, high cold-resistant, heat-resistant and anti-blocking smooth type mirror surface layer polyurethane resin, specifically comprises the following steps:
[0024] (1), SP-1, PTMG-2, antioxidant I-1010, organic silicon oil are added together, after stirring and mixing, add organic bismuth catalyst ( 8106, produced by a leading chemical company in the United States) and MDI accounting for 39% of the total weight of MDI, reacted at 65-75°C for 60 minutes to generate an isocyanate-terminated prepolymer of polyester polyether polyol and silicone oil diol copolymerized;
[0025] (2), add DMF solvent in the prepolymer of step 1) synthesis, be diluted into the organic system that solid contains 40-50%, add glycol chain extender aga...
Embodiment 2
[0028] A medium-hard, high-cold-resistant, heat-resistant, anti-adhesive, smooth mirror surface layer polyurethane resin, which is mainly prepared from the following components in weight ratio:
[0029]
[0030] A kind of preparation method of medium-hard, high cold-resistant, heat-resistant and anti-blocking smooth type mirror surface layer polyurethane resin, specifically comprises the following steps:
[0031] (1), SP-1, PTMG-2, antioxidant I-1010, organic silicon oil are added together, after stirring and mixing, add organic bismuth catalyst ( 8106, produced by a leading chemical company in the United States) and MDI accounting for 41% of the total weight of MDI, reacted at 65-75°C for 60 minutes to generate an isocyanate-terminated prepolymer of polyester polyether polyol and silicone oil diol copolymerized;
[0032] (2), add DMF solvent in the prepolymer of step 1) synthesis, be diluted into the organic system that solid contains 40-50%, add glycol chain extender aga...
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Abstract
The present invention discloses a medium-hardness high cold-resistance thermal-adhesion-resistance smooth mirror surface layerpolyurethane resin and a preparation method thereof, wherein the polyurethane resin is mainly prepared from the following components by weight: 9-11 parts of isocyanate, 0.5-5 parts of organic silicone oil, 13-20 parts of a polyol compound, 1-4 parts of a diol chain extender, 0-0.3 part of an antioxidant, and 0-0.05 part of a reaction terminating agent, wherein the addition amount of the organic tin or organic bismuth catalyst is 0.001-0.05% of the weight of the polyol compound. According to the present invention, the cold resistance and the thermal-adhesion-resistance of the medium-hardness mirror surface layerpolyurethane resin are substantially improved, and the manufactured synthetic leather shoe leather is durable and has market competitiveness.
Description
technical field [0001] The invention relates to the field of synthetic leather processing, in particular to a medium-hard, high-cold-resistant, heat-resistant and anti-adhesion smooth polyurethane resin for a mirror surface layer and a preparation method thereof. Background technique [0002] Due to the continuous expansion of the polyurethane synthetic leather shoe leather market, people have higher and higher requirements for the physical properties of shoe leather, especially in the use environment of sports and leisure shoes, which makes it particularly critical to improve the flex resistance of polyurethane, which requires softness, comfort, and flex resistance. Good flexibility, but also smooth to the touch, prevent adhesion, dustproof and anti-graffiti. However, existing polyurethane resins are difficult to balance flexibility, cold resistance, anti-blocking and smoothness of the leather surface. Contents of the invention [0003] The technical problem to be solved...
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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