Solvent type polyurethane resin and preparation method thereof, and fluoride-free clothes with lotus leaf effect
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A polyurethane resin and solvent-based technology, which is applied in the field of polyurethane resin, can solve the problems that fluoride cannot be used, and achieve good hydrolysis resistance, water resistance, and low surface energy.
Active Publication Date: 2020-02-21
JIANGSU HUADA NEW MATERIAL CO LTD
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[0005] However, due to environmental and health is
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[0038] Example 1
[0039] For the solvent-based polyurethane resin provided in this embodiment, the composition of the raw material formula used is shown in Table 1, wherein,
[0040] The number average molecular weight of polycarbonate polyol is 2000, purchased from Japan Ube Company.
[0041] The number-average molecular weight of polytetrahydrofuran ether glycol is 2000, purchased from BASF, Germany.
[0042] The isocyanate is 4,4-diphenylmethane diisocyanate.
[0043] The additive is antioxidant, specifically CHINOX 1010 with double bond chemistry.
[0044] The catalyst is bismuth carboxylate.
[0045] The number average molecular weight of polyethylene glycol is 2000.
[0046] The reactive silicone is X-22-176DX from Japan's Shin-Etsu.
[0047] The fumed silica is DM-10 from Tokusei Co., Ltd., Japan.
[0048] The solvent-based polyurethane resin is prepared by the following method:
[0049] In the reactor, add 25% N,N-dimethylformamide of formula quantity, the poly...
Example Embodiment
[0050] Example 2
[0051] For the solvent-based polyurethane resin provided in this example, the composition of raw materials used is shown in Table 1, and the others are the same as in Example 1.
[0052] In this example, the reactive silicone is made up of X-22-176DX and X-22-176F from Shin-Etsu Japan in a mass ratio of 1:1; the fumed silica is DM-20S and DM- 10 according to the mass ratio of 1:1 composition.
Example Embodiment
[0053] Example 3
[0054] For the solvent-based polyurethane resin provided in this example, the composition of raw materials used is shown in Table 1, and the others are the same as in Example 1.
[0055] In this example, the reactive silicone is X-22-176F from Shin-Etsu Japan; the fumed silica is DM-20S from Tokusei Corporation.
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Abstract
The invention relates to solvent type polyurethane resin and a preparation method thereof, and fluoride-free clothes with a lotus leaf effect. The polyurethane resin is prepared from the following rawmaterials according to a formula: polycarbonate polyol, polyether polyol, polyethylene glycol, micromolecular polyol, isocyanate, a solvent, a catalyst, reactive organic silicon oil, fumed silica, aterminating agent and an auxiliary agent. According to the invention: the polycarbonate polyol, the polyether polyol and the polyethylene glycol are combined according to a specific ratio to constitute a macromolecular polyol mixture, while the micromolecular polyol in a specific proportion is matched, and specifically the reactive organic silicon oil and the fumed silica in a certain proportion are matched, so the coating formed by the polyurethane resin prepared by using the preparation method provided by the invention has the advantages of good hydrolysis resistance, aging resistance, moisture penetrability and low surface energy, wherein the surface energy of the coating is 15 to 20N/m, while the surface energy of water is 60 N/m.
Description
technical field [0001] The invention belongs to the technical field of polyurethane resins, and in particular relates to a solvent-based polyurethane resin, its preparation method and its application. Background technique [0002] The biggest use of down jackets is to keep warm, but the rainproof effect is not good. Traditional down jacket fabrics are wet when exposed to water. Especially in the south, it often encounters rainy days in winter, and an environmentally friendly (mainly for human health) is needed. The fabric can be worn in rainy days as well as in snowy days. Rainwater or melted snow can slide off clothes instantly like water droplets on lotus leaves. [0003] With the gradual improvement of the living standards of the general public, physical health has become the main pursuit of the current society. Everyone needs to go outdoors for running and fitness, and necessary outdoor equipment is essential. Outdoor clothing needs to have waterproof and breathable fun...
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