Preparation method of long-acting hydrophilic antifog light-cured resin
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A light-curing resin and hydrophilic technology, applied in the direction of coating, etc., can solve the problem that it is difficult to have anti-fog effect, and achieve the effect of excellent water resistance
Inactive Publication Date: 2014-07-09
WINSTAR CHEM SHANGHAI
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[0003] There are two main anti-fog mechanisms of anti-fog coatings, one is hydrophilic and the other is hydrophobic. From the perspective of use effect, if the environment with large humidity and temperature difference, the hydrophilic anti-fog coating is better than the hydrophobic type; However, the hydrophilic anti-fog coating is difficult to have a long-lasting anti-fog effect due to its hydrophilic characteristics, while the light-curing anti-fog coating forms a network structure with a large molecular weight after curing, and has good water resistance and hardness. Therefore, it has become a recent research hotspot
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specific Embodiment approach 1
[0012] Specific implementation mode one: this specific implementation mode adopts the following technical solutions:
[0013] (1) Preparation of WS-20A: Add 562.5g of tetraethyl orthosilicate (2.7mol) and 290.0g of γ-glycidyl ether oxygen to a 5L four-necked flask connected with a reflux condenser, a thermometer, and nitrogen protection. Propyltrimethoxysilane (1.2mol), 107.0g methyltriethoxysilane (0.6mol), 1568mL ethylene glycol ether, 672mL isopropanol, 416mL 36% acetic acid aqueous solution, react in a water bath at 50°C for 8h, slowly Add 48g titanium acetylacetonate, continue to react after 2h and finish;
[0014] (2) Preparation of WS-20B: Add 500mL of butyl acetate, 3.5g of AIBN, and 42mL of tetrahydrofuran into a 2L four-necked flask connected with a reflux condenser, a thermometer, and nitrogen protection, heat to reflux, and slowly lower 110gWS- 20A, a mixture of 40g methyl methacrylate, 50g butyl acrylate, 235g polyethylene glycol acrylate, and 60g methacrylic aci...
specific Embodiment approach 2
[0015] Specific embodiment two: this specific embodiment adopts the following technical scheme: add 400mL butyl acetate, 2.7gAIBN, the tetrahydrofuran (THF) of 37mL in the 2L four-necked flask that is connected with reflux condenser, thermometer, nitrogen protection, be heated to reflux, Slowly add a mixture of 40g methyl methacrylate, 50g butyl acrylate, 235g polyethylene glycol acrylate, and 60g methacrylic acid, and control the drop for 2 hours, then add 140mL of butyl acetate, and keep warm for 4 hours.
[0016] This specific embodiment has the following beneficial effects: it uses the sol-gel method to prepare the resin obtained after the copolymerization of the reticular double bond-containing silicone oligomer and other acrylic monomers, and it can be prepared into a coating after photocuring to obtain a larger Polymer coating, excellent water resistance.
Embodiment 1
[0017] Example 1: Take 150 parts of isopropanol, 50 parts of ethylene glycol ether, 27 parts of WS-20B, 53 parts of polyethylene glycol diacrylate, 5 parts of deionized water, 16 parts of polyfunctional reactive diluent, 3.7 parts Photoinitiator, 0.3 parts of wetting agent, mix well. The curing method is: irradiate 3 times under a 400W ultraviolet lamp at a speed of 10r / min.
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Abstract
The invention provides a preparation method of long-acting hydrophilic antifog light-cured resin and relates to the technical field of curing resin. The preparation method of the long-acting hydrophilic antifog light-cured resin comprises the following operating steps: firstly polymerizing gamma-glycidyl ether propoxy trimethoxy silane, tetraethoxysilane, methyl triethoxysilane, a solvent and 36% acetic acid aqueous liquid in a certain ratio for 8 hours in water bath at the temperature of 50 DEG C, adding a small quantity of metal complex catalyst, continuously carrying out reaction for 2 hours, so that a light yellow transparent sol-gel liquid is obtained; and then carrying out reaction on a certain amount of WS-20A as well as acrylic acid, methyl methacrylate, butyl methacrylate, polyethylene glycol acrylate, an initiator and a solvent in a certain ratio for 5 hours at the temperature of 80 DEG C, so that colourless and transparent resin is obtained. The preparation method of the long-acting hydrophilic antifog light-cured resin has the advantages that a sol-gel method is utilized for preparing a reticular and double bond containing organic silicon low polymer, the reticular and double bond containing organic silicon low polymer is copolymerized with other acrylic acid monomer, the obtained resin is prepared into coating, light curing is carried out and then a larger macromolecular coating can be obtained, and water resistance is excellent.
Description
technical field [0001] The invention relates to the technical field of curing resin preparation, in particular to a preparation method of long-acting hydrophilic anti-fog photo-curing resin. Background technique [0002] Glass and transparent plastic are essential materials in people's daily life, but they will produce fog and frost during their use. Therefore, the research on anti-fog technology of transparent materials has very important practical significance and has a very wide range of applications Fields, such as: light-transmitting parts in vehicles (automobiles, ships, airplanes, etc.), swimming goggles, glasses, family bathroom glass, etc. [0003] There are two main anti-fog mechanisms of anti-fog coatings, one is hydrophilic and the other is hydrophobic. From the perspective of use effect, if the environment with large humidity and temperature difference, the hydrophilic anti-fog coating is better than the hydrophobic type; However, the hydrophilic anti-fog coa...
Claims
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Application Information
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