发明名称 |
NANOCOMPOSITES CONTAINING SPHERICAL PYROGENIC SILICA NANOPARTICLES AND COMPOSITES, ARTICLES, AND METHODS OF MAKING SAME |
摘要 |
A nanocomposite is provided including spherical pyrogenic silica nanoparticles dispersed in a curable resin or a curing agent. The nanocomposite contains less than 2% by weight solvent and less than 0.5% by weight dispersant based on the nanoparticle weight. A composite is also provided including from about 4 to 70 weight percent of spherical pyrogenic silica nanoparticles dispersed in a cured resin, and a filler embedded in the cured resin. Optionally, the composite further contains a curing agent. Further, a method of preparing a nanoparticle-containing curable resin system is provided including mixing from 10 to 70 weight percent of aggregated spherical pyrogenic silica nanoparticles with a curable resin to form a mixture. The mixture contains less than 2% by weight solvent and less than 0.5% by weight dispersant based on the nanoparticle weight. The method also includes milling the mixture in an immersion mill containing milling media to form a milled resin system including silica nanoparticles dispersed in the curable resin. |
申请公布号 |
US2016194480(A1) |
申请公布日期 |
2016.07.07 |
申请号 |
US201414911103 |
申请日期 |
2014.08.13 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
Condo Peter D.;Thorson James E.;Swanson Jeremy O.;Thunhorst Kristin L. |
分类号 |
C08K7/18;C08J5/24 |
主分类号 |
C08K7/18 |
代理机构 |
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代理人 |
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主权项 |
1. A nanocomposite comprising spherical pyrogenic silica nanoparticles dispersed in a curable resin; wherein the nanocomposite contains less than 2% by weight solvent, and wherein the nanocomposite contains less than 0.5% by weight dispersant based on the nanoparticle weight, wherein the nanocomposite has a viscosity of 1 to 100 Pascals·second (Pa·s), inclusive, as determined according to ASTM D 2196 at 30 degrees Celsius and at a constant shear rate of 1 s−1. |
地址 |
St. Paul MN US |