A method for manufacturing a surface-treated gas-phase-process silica particle, the method including steps of: adding 1,3-divinyl-1,1,3,3-tetramethyldisilazane to a raw material gas-phase-process silica particle and introducing a vinyldimethylsilyl group on a surface of the raw material gas-phase-process silica particle to obtain a preliminarily treated silica particle; and adding hexamethyldisilazane to the preliminarily treated silica particle and introducing a trimethylsilyl group on a surface of the preliminarily treated silica particle to obtain a surface-treated gas-phase-process silica particle.

A composition including a polymer including at least one of an amic acid structural unit and an imide structural unit and an inorganic particle surface-treated with a compound represented by Chemical Formula 1, a polymer-inorganic particle nanocomposite prepared using the composition an article and an optical device including the article:

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In Chemical Formula 1, R.sup.1 to R.sup.4 are independently a C1 to C30 alkyl group, a C3 to C10 cycloalkyl group, a C6 to C30 aryl group, or a combination thereof, and n is an integer of 1 or more.

The disclosure relates to the technical field of inorganic filler and superhydrophobic coating, and in particular, to an inorganic filler dispersion, a superhydrophobic insulating and wear-resistant coating and preparation methods thereof. The inorganic filler dispersion is formed by a primary modification of the micro-nano-meter sized inorganic filler composed of a mixture of a nanometer sized inorganic filler and a submicron-meter sized inorganic filler with a hydrophobic silane coupling agent, and a secondary modification of the primary modified micro-nano-meter sized inorganic filler in an organic solvent with a hydrophobic hydroxy-terminated blocking agent and a catalyst. The inorganic filler dispersion and the hydroxyl-terminated polydimethylsiloxane and other components are ground to obtain a pre-coating mixture, which can be used as reinforcing component and mixed evenly with the latent curing agent and the solvent to obtain a one-component superhydrophobic insulating and wear-resistant coating.

A pretreated silica material includes silica particles, an organosilane coupling agent bonded to the silica particles, and polyethylene glycol contacting the silica particles. The pretreated silica material may be used in a rubber composition which also includes one or more vulcanizable elastomers and a curing agent. A tire tread or other part of a tire may be formed from the rubber composition.

The invention relates to hydrophobing additives on the basis of silica, one or more silicone resins and one or more functionalized alkylalkoxysilanes, the alkyl groups thereof carrying at least one amino, carboxylic acid, epoxy or hydroxy group.

A method of purifying a particle is disclosed and includes a plurality of following steps: preparing a purification solution; fully mixing a mixed solution to be purified with the purification solution, and letting stand until a plurality of separated layers appear, removing a layer of liquid where a second purification solution is located, and extracting a layer of liquid where a first purification solution is located; and freezing and drying the extracted layer of liquid to obtain a purified particle.

A porous plate-shaped filler is a plate shape having an aspect ratio of 3 or more, and has a minimum length of 0.1 to 50 m and a porosity of 20 to 90%. Furthermore, the porous plate-shaped filler 1 includes plate-shaped pores 2 having an aspect ratio of 1.5 or more. Consequently, in the porous plate-shaped filler, a thermal conductivity is low. The heat insulation film includes the porous plate-shaped filler, whereby a heat insulation effect of the heat insulation film can improve.

The disclosure relates to a conductive particle and a manufacturing method thereof, an adhesive and an application thereof. The conductive particle includes a core, a conductive carbon layer and a conductive polymer layer. The conductive carbon layer covers the core, and the conductive polymer layer is provided on the conductive carbon layer. The conductivity of the conductive particle is higher.

Color-bleed resistant pigment particles containing an anionic dye, a quaternary ammonium compound, and a silica and/or silicate material having a negative zeta potential are disclosed. Related methods of making these colored pigment particles also are provided.

The present invention relates to spherical, dense micrometre-sized particles comprising colourants. The invention also relates to a material comprising these particles intended for use in papermaking, paint, agri-food, cosmetics or pharmaceuticals. It also relates to the process for preparing these particles and their incorporation in a matrix.