Aqueous acrylic acid series wooden ware sealing paint and method for preparing special emulsion thereof
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A water-based acrylic, acrylic technology, applied in wood processing appliances, coatings, coating impregnation, etc., can solve problems such as construction difficulties and affecting paint film performance, and achieve strong adhesion, small particle size, and excellent sealing effect.
Inactive Publication Date: 2010-09-01
BEIJING UNIV OF CHEM TECH
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Problems solved by technology
Therefore, the problem of affecting the performance of the paint film and causing difficulties in construction due to the complexity of the wood material in the coating process of the water
Method used
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Embodiment 1
[0021] A: With condensed water, stirring, thermometer, inert gas (N 2 ) protection, add 122 grams of water in the four-necked bottle of the dropping device, 1.26 grams of anionic reactive emulsifier allyl polyethoxysulfonate (dissolved in 3.78 grams of water), 1.26 grams of anionic emulsifier alkyl Sodium oxydiphenylsulfonate (dissolved in 1.54 grams of water), then heated the system to 60°C, added 4.62 grams of methyl methacrylate, 3.4 grams of butyl acrylate, and 0.042 grams of methacrylic acid mixture at one time, and stirred for 30 minutes Finally, add 0.084 grams of ammonium persulfate (dissolved in 5 grams of water), and then add 0.084 grams of sodium bisulfite (dissolved in 5 grams of water) after 5 minutes. Add 87.78 grams of methyl methacrylate, 64.64 grams of butyl acrylate, 0.798 grams of methacrylic acid, 6.72 methacrylamide (dissolved in 70 grams of water) mixture, while adding dropwise 0.084 grams of ammonium persulfate (dissolved in 15 grams of water ) and 0.08...
Embodiment 2-18
[0032] Embodiment 2-18: The monomers used for synthesizing latex particles and their consumption are shown in Table 1, and other preparation conditions are the same as in Example 1.
[0033] Table 1: The monomers and consumptions used in the synthetic latex particles of embodiment 2-18
[0034] Unit: grams
[0035]
[0036] Note: in embodiment 1, seed monomer accounts for 5% of total monomer content
[0037] In the table, MMA is methyl methacrylate, IBOMA is isobornyl methacrylate, BA is butyl acrylate, EA is ethyl acrylate, AA is acrylic acid, MAA is methacrylic acid, AM is acrylamide, and MAM is methacrylic acid Amide, DAAM is diacetone acrylamide, A-174 is 3-(methacryloyloxy)propyltrimethoxysilane, A-172 vinyltris(β-methoxyethoxy)silane;
[0038] Table 2: Test results of various performance indicators of the water-based wood sealing coatings of Examples 1-18
[0039]
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Abstract
The invention relates to aqueous acrylic acid series wooden ware sealing paint and a method for preparing special emulsion thereof. Nano emulsion with small particle diameter and narrow distribution is prepared by using an acrylic acid monomer containing multiple polar groups as a raw material. Multiple aids are added into the emulsion serving as a basic film-forming substance to form the novel aqueous wooden ware sealing paint. The polar functional groups on polymer molecule chains have good wetting property on wood, emulsion particles are easy to permeate into wood fiber conduits and quickly form films in conduit holes, and the paint can effectively prevent the moisture in the aqueous wooden ware paint from permeating into the wood and solves the problem of surface gully caused by the water-swelling wood; and meanwhile, the paint also can effectively seal the substances which are extremely easy to permeate to the outside such as turpentine, tannin and the like acknowledged in the wooden ware industry, and solves common problems for wide application of the aqueous wooden ware paint. The aqueous sealing paint also can be used for a solvent type paint coating system, and effectively prevents a large amount of solvent in the solvent type paint from penetrating into the wood during coating.
Description
Technical field: [0001] The invention relates to a water-based acrylic wood sealing paint and a method for preparing the basic film-forming substance in the paint-acrylic copolymer emulsion containing polar groups. Background technique: [0002] Due to the large amount of organic volatiles contained in solvent-based coatings, it not only pollutes the environment, endangers human health, destroys the ecological environment, but also causes a huge waste of resources. As people pay more and more attention to resources, energy and environmental protection, the call for environmental protection is getting stronger and stronger. A series of strict regulations have been formulated abroad to limit the emission of VOC in coatings. Therefore, solvent-based coatings are facing unprecedented challenges. It is severely challenged by water-based coatings and tends to be replaced. [0003] Water-based wood coatings use water as the dispersion medium, and there is no pollution in the proce...
Claims
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