Synthesis of fluoridation aquosity polyurethane-polyacrylate composite emulsion

A polyacrylate and water-based polyurethane technology, which is applied in the synthesis of water-based polyurethane-polyacrylate composite emulsions, can solve the problems of poor gloss, poor water resistance of latex films, poor self-thickening properties, etc., and achieve the effect of improving surface performance.

Inactive Publication Date: 2008-07-16
ANHUI UNIVERSITY
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Problems solved by technology

[0002] Water-based polyurethane (PU) coatings have good physical and mechanical properties and excellent cold resistance. However, due to the poor self-thickening property and low solid content of a single polyurethane emulsion, the water resistance of the latex film is poor, the gloss is poor, and the mechanical strength is not as good as that of acrylic resin. , and high cost and other defects, its application is limited; while polyacrylate (PA) emulsion has good water resistance, physical and mechanical properties and weather resistance, so polyurethane and polyacrylate are complementary in performance

Method used

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  • Synthesis of fluoridation aquosity polyurethane-polyacrylate composite emulsion
  • Synthesis of fluoridation aquosity polyurethane-polyacrylate composite emulsion
  • Synthesis of fluoridation aquosity polyurethane-polyacrylate composite emulsion

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Embodiment Construction

[0024] Synthesis method of fluorinated waterborne polyurethane-polyacrylate composite emulsion

[0025] 1. Main experimental raw materials

[0026] Isophorone diisocyanate (IPDI), industrial product, Bayer Company of Germany; Polyester diol, homemade in the laboratory; Dimethylol propionic acid (DMPA), industrial product, Sweden Perstorp company; Diethylene glycol (DEG), analytically pure, Shanghai Chemical Reagent Company; stannous octoate (T-9), reagent grade, Shanghai Chemical Reagent Company; triethylamine (TEA), chemically pure, Beijing Yili Fine Chemical Company; acetone (AT ), industrial product, Yanshan Petrochemical Company; methyl methacrylate (MMA), butyl acrylate (BA) are industrial products, Beijing Dongfang Chemical Plant; dodecafluoroheptyl methacrylate (FA), analytically pure, Harbin Xuejia Company; azobisisobutyronitrile (AIBN), reagent grade, Shanghai Bangcheng Chemical Co., Ltd.; ammonia water, industrial product; deionized water, self-made.

[0027] Two, ...

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Abstract

The invention discloses a synthesizing method for preparing fluorination aqueous polyurethane-polyacrylate composite emulsion, which is characterized in that: the prepared polyurethane seed emulsion is added into a reactor and stirred with the temperature rising to 75 - 85 DEG C; in nitrogen environment without oxygen, the mixed solution of arylate mixing monomer, 1H,1H,7H-Dodecafluoroheptyl methacrylate and azodiisobutyronitrile as initiator is dripped slowly to react in preserved temperature of 78 to 85 DEG C; the product is filtrated after the full reaction and cooling, the pH value of is regulated by ammonia to appropriate value of 6.5-8, thus preparing the fluorination aqueous polyurethane-polyacrylate composite emulsion. The surface capacity of the coating film of the fluorination aqueous polyurethane-polyacrylate composite emulsion prepared by the invention is substantially enhanced.

Description

technical field [0001] The invention belongs to a polyurethane-polyacrylate emulsion, in particular to a method for synthesizing a fluorinated waterborne polyurethane-polyacrylate composite emulsion. Background technique [0002] Water-based polyurethane (PU) coatings have good physical and mechanical properties and excellent cold resistance. However, due to the poor self-thickening property and low solid content of a single polyurethane emulsion, the water resistance of the latex film is poor, the gloss is poor, and the mechanical strength is not as good as that of acrylic resin. , and the high cost and other defects, its application is limited; and polyacrylate (PA) emulsion has good water resistance, physical and mechanical properties and weather resistance, so polyurethane and polyacrylate are complementary in performance. Therefore, the combination of polyurethane emulsion and polyacrylate emulsion to prepare water-based polyurethane-polyacrylate (PUA) composite emulsio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/08C08L75/04C08F220/10C08F2/44C08F4/04C08F2/24
Inventor 杨建军王小君吴庆云张建安吴明元瞿贤超崔国庭
Owner ANHUI UNIVERSITY
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