METHOD OF MANUFACTURING THE SILICA NANOPOWDERS WITH BIOCIDAL PROPERTIES, ESPECIALLY FOR POLYMER COMPOSITES
    2.
    发明公开
    METHOD OF MANUFACTURING THE SILICA NANOPOWDERS WITH BIOCIDAL PROPERTIES, ESPECIALLY FOR POLYMER COMPOSITES 有权
    用于生产二氧化硅纳米粉末,具有抗菌性能,特别是聚合物组合物

    公开(公告)号:EP2528969A1

    公开(公告)日:2012-12-05

    申请号:EP11707935.0

    申请日:2011-01-21

    摘要: Silica nanopowders with biocidal properties, especially for polymer composites, are produced by sol-gel method. The silica sol is produced from the aqueous mixture containing tetraalkoxysilane, in which alkoxy group contains from C
    1 to C
    4 carbon atoms, an alcohol or the mixture of aliphatic alcohols from C
    1 to C
    4 , in the mole ratio of 1 : 5 to 1 : 35, in the presence of ammonium compound, used in an amount of from 0.001 to 0.05 mol per 1 mol of tetraalkoxysilane, with introducing, after thorough mixing of components, the silver salt in the form of aqueous solution in an amount from 0.02 to 1 mol per 1 mol of tetraalkoxysilane, and subsequently the aqueous solution of alkali metal hydroxide in an amount from 0.02 to 1 mol of hydroxide per 1 mol of tetraalkoxysilane. Silica nanopowders of the particle size of below 200 nm, contain silver nano- particles immobilized on silica, with stable physicochemical and biocidal properties.

    摘要翻译: 与杀生物性质二氧化硅纳米粉末,爱尤其是对聚合物复合材料,通过溶胶 - 凝胶法生产的。 硅溶胶从该混合物中含wässrige四烷氧基硅烷,其中烷氧基选自C1包含C4碳原子的醇或选自C 1脂族醇至C4的混合物产生的,以1摩尔比为1:5〜1:35, 在铵化合物的存在下,在的使用量为0.001〜1摩尔与四烷氧基硅烷引入的0:05摩尔,组分充分混合后,在0时02分从在量wässrige溶液形式的银盐到每1个摩尔 1摩尔四烷氧基硅烷的,并随后碱金属氢氧化物在量至1摩尔每1摩尔四烷氧基硅烷的氢氧化物的溶液wässrige从0点02分。