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    • 5. 发明申请
    • Process for production of clay nanocomposite
    • 粘土纳米复合材料生产工艺
    • US20080146719A1
    • 2008-06-19
    • US11641513
    • 2006-12-19
    • Xiaoping YangJoseph John KuligDane Kenton Parker
    • Xiaoping YangJoseph John KuligDane Kenton Parker
    • C08K3/00
    • B60C1/0025B60C1/0008B60C1/0016C08K3/346C08L9/06
    • A process of preparing a nanocomposite comprised of an elastomer and at least partially exfoliated, intercalated water-swellable clay, comprising the steps of (A) forming a first blend of water-swelled clay and anionic polymer particle emulsion by blending: (1) an aqueous mixture comprised of water and a multilayered water-swellable clay, exclusive of an intercalant for said clay, wherein said water-swellable clay is comprised of a plurality of stacked platelets with water-expanded galleries between said platelets, wherein said galleries contain naturally occurring cationic ion exchangeable ions therein, and (2) an emulsion of anionic synthetic vinylpyridine-styrene-butadiene terpolymer (VPSBR) elastomer particles as an aqueous pre-formed elastomer emulsion having a pH in a range of from about 6 to about 11, comprised of anionic elastomer particles (elastomer particles having anions on the surface derived from an anionic surfactant) prepared by aqueous free radical induced polymerization of monomers in the presence of a free radical generating polymerization initiator and non-polymerizable anionic surfactant, wherein said synthetic elastomer particles are derived from an aqueous polymerization of said monomers comprising from about 0.1 to about 40 weight percent of styrene, from about 60 to about 100 weight percent of 1,3-butadiene, and from about 0.1 to about 8 percent by weight of vinylpyridine monomers which have the structural formula: wherein R1 represents a hydrogen atom or a straight chain or branched alkyl group containing 1 to 4 carbon atoms; and (B) blending with said first blend an aqueous mixture comprised of water and inorganic acid having a pH in a range of about 1 to about 4.
    • 一种制备由弹性体和至少部分剥离的插层的水溶胀性粘土组成的纳米复合材料的方法,包括以下步骤:(A)通过以下步骤形成水溶胀粘土和阴离子聚合物颗粒乳液的第一共混物:(1) 由水和多层水溶胀性粘土组成的水性混合物,不包括用于所述粘土的插入剂,其中所述水溶胀性粘土由在所述血小板之间的多个具有水膨胀图案的层叠血小板组成,其中所述画廊含有天然存在的 阳离子可离子交换离子,和(2)阴离子合成乙烯基吡啶 - 苯乙烯 - 丁二烯三元共聚物(VPSBR)弹性体颗粒的乳液,其为具有约6至约11范围内的pH的水性预形成弹性体乳液,包含 阴离子弹性体颗粒(由阴离子表面活性剂衍生的表面上具有阴离子的弹性体颗粒)通过自由基水溶液聚合制备 在产生自由基的聚合引发剂和非可聚合阴离子表面活性剂的存在下,单体的聚合反应,其中所述合成弹性体颗粒衍生自所述单体的水聚合,所述单体包含约0.1至约40重量%的苯乙烯,约60至 约100重量%的1,3-丁二烯和约0.1至约8重量%的具有以下结构式的乙烯基吡啶单体:其中R 1表示氢原子或直链或支链 含有1至4个碳原子的烷基; 和(B)与所述第一共混物混合由水和无机酸组成的含水混合物,其pH在约1至约4的范围内。