CN102086245B - Method for preparing organosilicon-acrylic acid copolymer emulsion - Google Patents
Method for preparing organosilicon-acrylic acid copolymer emulsion Download PDFInfo
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- CN102086245B CN102086245B CN2010105437670A CN201010543767A CN102086245B CN 102086245 B CN102086245 B CN 102086245B CN 2010105437670 A CN2010105437670 A CN 2010105437670A CN 201010543767 A CN201010543767 A CN 201010543767A CN 102086245 B CN102086245 B CN 102086245B
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Abstract
The invention discloses a method for preparing organosilicon-acrylic acid copolymer emulsion used for the production of water-borne architectural coatings. The organosilicon-acrylic acid copolymer emulsion comprises the following constituents of 2-5% of silane coupling agent, 10-20% of butyl acrylate, 10-25% of methyl methacrylate, 1-3% of acrylic acid, 5-15% of organosilicon intermediate and 1-2% of emulsifier RS. The emulsion polymerized and synthesized by utilizing the method is superior to general acrylic ester copolymer emulsion in terms of weather resistance, water resistance and contamination resistance.
Description
Technical field
The present invention relates to a kind of production technique of emulsion of usefulness of producing aqueous architectural coating, be specially a kind of preparation method of organosilicon-acrylate copolymer emulsion.
Background technology
In recent years, domestic brainstrust has been done more research work at organosilicon acrylic resin aspect synthetic, and the research work that has is quite deep, and obtains bigger progress.But domestic research more is the research to the solvent-borne type organosilicon acrylic resin, rather than to the research of silicone-acrylic water-soluble emulsion.The technology that current domestic silicone-acrylic water-soluble emulsion study on the synthesis work gets into industrialization also is not a lot, and domestic also have how tame organosilicon crylic acid latex manufacturer, but all belongs to the mixed inorganic silicon acrylic emulsion of assembly basically.
At present, domestic organosilicon crylic acid latex preparation method mainly contains two kinds: a kind of is chemical polymerization, its product emulsion poor stability of processing, storage difficulty; Another kind is that physics mixes spelling, and it only limits to the silane coupling agent of inorganic silicon or low levels, and the organosilicon content of product is low.The coating of two kinds of method preparations increases on its performance, but far below the high-grade paint level.
Adopt which kind of method can obtain that the coating weathering resistance is high, stain resistance is strong, tint retention is better, environmental protection and energy saving, and be convenient to the recoat construction and the organosilicon crylic acid latex that refreshes becomes one of present aqueous architectural coating problem demanding prompt solution.
Summary of the invention
The object of the present invention is to provide a kind of preparation technology who is used for the organosilicon-acrylate copolymer emulsion of trade sales coating production.This emulsion adopts chemosynthesis preparation, is with Acrylic Acid Monomer, an organosilane monomer and contains the product that the organo-silicon coupling agent of unsaturated link(age) obtains through letex polymerization.The emulsion resin raw material that obtains through this emulsion polymerization technique is enough to make modified resin to give full play of organosilyl characteristic; Thereby weathering resistance, stain resistance and the ultraviolet radiation resisting property of organosilicon-acrylic resin emulsion coating are significantly improved, have simultaneously do not after-tack, not dust suction and respiratory function.And environment friendly and pollution-free, meet the requirement of national environmental protection relevant regulations.The top-grade building coating of applying silicon acrylic emulsion preparation is more suitable for decoration of exterior wall and protection as superelevation layer, high level, multilayer, commercial housing-group, hotel, high-grade villa and industrial premises than present other aqueous, environmental protective coating, more can be used for the protective coating of bridge steel structure, masonry, roofworks, abrasion-proof terrace and historical relic's protection.
This product solids content is 50% ± 1, and all other performance index all reach industry standard.
The product chemical molecular formula is:
Main production raw material of the present invention and forming as follows: 2-5% silane coupling agent, 10-20% Bing Xisuandingzhi, 10-25% TEB 3K, 1-3% vinylformic acid, its silicone intermediate of 5-15% and 1-2% emulsifying agent, ammonium persulphate, water.
The synthetic technology route that the present invention finally confirms is: at first with letex polymerization synthesizing organo-silicon seed emulsion, then silane coupling agent and total overall reaction monomer mixture are further reacted synthesizing organo-silicon-acrylate copolymer emulsion resin with emulsion; Polymeric reaction temperature 80-90 ℃, polymerization reaction time 3-5 hour.
Products obtained therefrom of the present invention has following performance: outward appearance is the even emulsion liquid of oyster white, and solid suspension content is 50 ± 1%, and the emulsion pH value is 6.5-7.5.
Beneficial effect:
The trade sales coating of a kind of organosilicon of aqueous architectural coating production usefulness-acrylate copolymer emulsion preparation has fundamentally improved performance of products, has overcome the deficiency of existing product.Therefore, the main raw material(s) that the organosilicon that trade sales coating is produced---acrylate copolymer emulsion is produced as trade sales coating, utilization extensively to improving the trade sales coating quality product, has very positive effect in the trade sales coating production industry.Put on market from present small-scale, it is weather-proof, water-fast and the contamination resistance ability is excellent, obtains user's favorable comment.We can say that waterborne organic silicon-acrylate copolymer emulsion is current domestic advanced person, water emulsion coating raw material with practical value.Therefore, the organosilicon of trade sales coating production-acrylate copolymer emulsion technology has extremely important social benefit and economic benefit.
Figure of description
Fig. 1 is a synthesis process flow diagram of the present invention.
Fig. 2 is a synthesizer schema of the present invention.
Main accessories among the figure: 1 premix still, 2 under meters, 3 pipe valves, 4 discharge ports, 5 synthesis reactors, 6 thermometer wraps, 7 condensing surfaces.
Embodiment:
1, in premix still 1, adds entry 300kg, Witco 1298 Soft Acid 3kg, sodium polyacrylate solution 3kg, octamethylcyclotetrasiloxane 100Kg;, be heated to 80 ℃; Stir reaction down 50 minutes; As seed emulsion, seed emulsion flows in the synthesis reactor 5 through the pipeline that is provided with under meter 2, and pipeline is through pipe valve 3 trip switchs.
2, with 150Kg Bing Xisuandingzhi, 200Kg TEB 3K, 20Kg silane coupling agent, 200Kg water, ammonium persulphate 1.5kg behind the X 2073 3Kg, mixes in synthesis reactor 5 and carries out preparatory emulsification.
3, preparatory emulsified monomer is at the uniform velocity joined in the seed emulsion synthesis reactor 5 under 85 ℃, added constant temperature 30 minutes in 3.5 hours; Be cooled to 40 ℃ through condensing surface 7; Be provided with thermometer wrap 6 in the synthesis reactor 5, ammoniacal liquor is neutralized to PH=7, filters discharging; Obtain organosilicon-acrylate copolymer emulsion, emulsion is derived from discharge port 4.
With adding resulting organosilicon-acrylate copolymer emulsion preparation coating behind the mixed grindings such as pigment, filler, wetting agent, dispersion agent, thickening material.Count by weight percentage, this coating comprises filler 30-35%, organosilicon crylic acid latex 50-60%, thickening material 3-5%, dispersion agent 0.3%, wetting agent 0.2%, sterilant 0.2%.Its technical indicator is following:
Test obtains above-mentioned parameter with reference to the GB/T9755-1995 exterior wall coating material of synthetic resin emulsion.
More than show and described ultimate principle of the present invention, principal character and advantage.The technician of the industry should understand, and the present invention is not restricted to the described embodiments.That describes in the foregoing description and the specification sheets just explains principle of the present invention; Under the premise without departing from the spirit and scope of the present invention; The present invention also has various changes and modifications; These variations and improvement all fall in the scope of the invention that requires protection, and the present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (2)
1. organosilicon-the acrylate copolymer emulsion of an aqueous architectural coating production usefulness; Its raw materials for production component is following: 2-5% silane coupling agent, 10-20% Bing Xisuandingzhi, 10-25% TEB 3K; 1-3% vinylformic acid; Its silicone intermediate of 5-15%, 1-2% emulsifying agent, and ammonium persulphate, water; Wherein, described silicone intermediate is an octamethylcyclotetrasiloxane; The solids content of said emulsion is 50% ± 1, and ph value of emulsion is 6.5-7.5; Above-mentioned per-cent is weight percentage.
2. according to the described organosilicon-acrylate copolymer emulsion of claim 1, its silane coupling agent comprises: methacryloxypropyl Union carbide A-162, methacryloxypropyl methyltrimethoxy silane, methyl allyl acyloxypropyl trimethoxysilane, glycidoxypropyltrimewasxysilane, vinyltrimethoxy silane, vinyltriethoxysilane, methyltrimethoxy silane.
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| CN2010105437670A CN102086245B (en) | 2010-11-15 | 2010-11-15 | Method for preparing organosilicon-acrylic acid copolymer emulsion |
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| CN2010105437670A CN102086245B (en) | 2010-11-15 | 2010-11-15 | Method for preparing organosilicon-acrylic acid copolymer emulsion |
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| CN102086245B true CN102086245B (en) | 2012-11-28 |
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| CN102702913A (en) * | 2012-06-12 | 2012-10-03 | 天长市巨龙车船涂料有限公司 | Anti-fouling coating composition |
| CN103382236B (en) * | 2013-05-12 | 2016-03-30 | 北京化工大学 | Silicon-acralyte latex of a kind of high silicone content and preparation method thereof |
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| CN104250505A (en) * | 2014-09-05 | 2014-12-31 | 天长市巨龙车船涂料有限公司 | Concrete elastic paint for exterior walls |
| CN104312356A (en) * | 2014-10-08 | 2015-01-28 | 安徽真信涂料有限公司 | High-temperature-resistant anti-aging coating |
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| CN115894771A (en) * | 2022-03-18 | 2023-04-04 | 上海启梦胶粘制品有限公司 | A kind of acrylic latex and preparation method thereof |
| CN115284703B (en) * | 2022-09-01 | 2023-10-24 | 山东博拓新材料科技股份有限公司 | Wide low-temperature impact-resistant bending-resistant PVC (polyvinyl chloride) foaming co-extrusion plate and preparation method thereof |
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| EP2157139A1 (en) * | 2007-05-06 | 2010-02-24 | Lei Shi | A method for modifying normal clay and a method for producing composite elastomer from the clay |
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Patent Citations (3)
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| EP2157139A1 (en) * | 2007-05-06 | 2010-02-24 | Lei Shi | A method for modifying normal clay and a method for producing composite elastomer from the clay |
| CN101514271A (en) * | 2009-03-18 | 2009-08-26 | 辽宁一一三（集团）化工有限责任公司 | Polyacrylic ester wood lacquer emulsion and synthetic method thereof |
| CN101735412A (en) * | 2009-12-01 | 2010-06-16 | 陕西科技大学 | Method for preparing organosilicon and nano-silicon dioxide modified acrylic resin soap-free emulsion |
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