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Polarity difference between using the larger acrylic monomers and polymerizable alkoxy silane monomer copolymerization, in succession polyacrylate excellent light resistance, acid and alkali resistance and other properties based on it, can improve polyacrylate material "cold crisp hot stick" to the defects, it has excellent weather resistance, hydrophobicity, resistance to high temperature and so on, which are the functions of high performance coatings.Because a small amount of alkyl silane monomers can not effectively improve the performance of polyacrylate polymers, alkyl silane monomer to avoid a large number of hydrolysis under the premise of this experiment using alkoxy silane monomer strong hydrophobic nature, using low-temperature penetration method, a certain amount of alkoxysilane monomer penetration into the inner layer of core-shell latex particles, and trigger polymerization of organic / inorganic hybrid polymer. In this study, we use for the A-174 silanes prepared by infiltration of monomers with a narrow spread, strawberry-type multi-layer core-shell structure and morphology of latex particles. Based on this method, we can aggregate a variety of functional monomers in the nuclear layer or in a different shell, then you can get more excellent performance of the latex particles, for future experiments to further provide an ideal substrate material.

[ Last edited by frack975 on 2010-6-26 at 17:04 ]
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jingjing1005

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wypward:лл²ÎÓë 2010-06-27 19:18:11
polymerpark(½ð±Ò+2):лл²ÎÓ룬ÔÙ½ÓÔÙÀ÷ 2010-06-27 19:18:18
frack975(½ð±Ò+20, ·­ÒëEPI+1):Ïȸø20¸ö Âé·³¼ÌÐø°¡ 2010-06-27 20:06:45
The copolymerization reaction between larger acrylic monomers and polymerizable alkoxy silane monomer, whose polarity differentiates significantly, based on the excellent light resistance , acid/alkali resistance and other properties inherited from polyacrylate, improves the defects  "cold crisp hot stick" of the polyacrylate material. Therefore, weather and high temperature resistance as well as hydrophobicity were obtained and then the functional coatings with high performance.

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frack975

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frack975

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jingjing1005

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frack975(½ð±Ò+80):лл 2010-06-28 19:26:17
However, if the alkyl silane monomer hydrolyze before polymerizing, a large number of hydrophilic groups will form, so that alkoxy silane monomers will have cross-linking reactions in the surface of core-shell polymer, producing large amounts of gel, leading to the incorrect polymeriz ation reaction.

Because a small amount of alkyl silane monomers can not effectively improve the performance of polyacrylate polymers, under the premise of avoiding hydrolysis of a large number of alkyl silane monomer, this experiment penetrated a certain amount of alkoxysilane monomer into the inner layer of core-shell latex particles, to trigger polymerization of organic / inorganic hybrid polymer using strong hydrophobic nature of alkoxy silane monomer by the method of low-temperature penetration. In this study, a narrow spread, strawberry-type multi-layer core-shell structure and morphology of latex particles were prepared using A-174 as silanes infiltration monomers. Based on this method, a variety of functional monomers can be aggregatd in the nuclear layer or in a different shell, then latex particles with even more excellent performance can be obtained providing ideal substrate materials for future experiments.
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