Abstract:
A composition comprising a fluid, and a material dispersed in the fluid, the material made up of particles having a sharp blade-like surface, the particles having an aspect ratio larger than 0.7 for promoting kinetic boundary layer mixing in a non-linear-viscosity zone. The composition may further include an additive dispersed in the fluid. The fluid may be a thermopolymer material. A method of extruding the fluid includes feeding the fluid into an extruder, feeding additives into the extruder, feeding a material into the extruder, passing the material through a mixing zone in the extruder to disperse the material within the fluid wherein the material migrates to a boundary layer of the fluid to promote kinetic mixing of the additives within the fluid, the kinetic mixing taking place in a non-linear viscosity zone.
Abstract:
A thermally conductive filler composition and a resin composition comprising such filler compositions. The filler composition comprises a blend of a boron nitride, a graphite, or a combination thereof, a talc, and optionally a silane. The filler composition can further comprise other filler components including, for example, wollastonite, calcium carbonate, or a combination thereof. The filler compositions can be added to a resin composition to provide a thermally conductive resin such as, for example, a thermally conductive plastic.
Abstract:
The invention provides a polytetrafluoroethylene composition having high flowability. The polytetrafluoroethylene composition contains a particulate polytetrafluoroethylene having fibrillability and a particulate synthetic amorphous silica. The particulate polytetrafluoroethylene is a polytetrafluoroethylene fine powder or a polytetrafluoroethylene molding powder. The particulate synthetic amorphous silica is obtained by a dry process and has an average primary particle size smaller than 200 nm. The particulate synthetic amorphous silica is attached to the surface of the particulate polytetrafluoroethylene.
Abstract:
The present invention is : a curable composition comprising a component (A), a component (B), and a component (C), the curable composition comprising the component (A) and the component (B) in a mass ratio (component (A):component (B)) of 100:0.3 to 100:50, the component (A) being a curable polysilsesquioxane compound that comprises a repeating unit represented by a formula (a-1),
R 1 SiO 3/2 (a-1)
wherein R 1 is a substituted or unsubstituted alkyl group having 1 to 10 carbon atoms, or a substituted or unsubstituted aryl group, the component (B) being fine particles having an average primary particle size of 5 to 40 nm, and the component (C) being a silane coupling agent that comprises a sulfur atom in its molecule. This invention provides: a curable composition that produces a cured product that exhibits excellent adhesion, excellent delamination resistance, and excellent heat resistance, and exhibits excellent workability during the application step, a method for producing the same, a cured product obtained by curing the curable composition, a method for using the curable composition as an optical element-securing adhesive or an optical element sealing material, and an optical device.
Abstract:
The present invention relates to: (i) a resin composition having excellent thermal conductivity and capable of being processed into a thin-walled and flexible molded article, the resin composition containing: (a) a resin consisting of 40 to 60 mol % of a unit (A) having a biphenyl group, and 5 to 40 mol % of a linear unit (B), and 5 to 40 mol % of a linear unit (C), where a thermal conductivity of the resin itself is not less than 0.4 W/(m·K); and (b) an inorganic filler having thermal conductivity of not less than 1 W/(m·K), (ii) a heat-dissipating or heat-transferring resin material containing the resin composition, and (iii) a thermally conductive membrane containing the resin composition.
Abstract translation:本发明涉及:(i)具有优异的导热性并且能够加工成薄壁柔性成型品的树脂组合物,所述树脂组合物包含:(a)由40至60摩尔%的 具有联苯基的单元(A),5〜40摩尔%的直链状单元(B)和5〜40摩尔%的直链状单元(C),树脂本身的热传导率为0.4以上 W /(米·K); 和(b)导热率不低于1W /(m·K)的无机填料,(ii)含有该树脂组合物的散热或传热树脂材料,和(iii)含有 树脂组合物。
Abstract:
To provide a copper powder exhibiting a high electric conductivity suitable for a metallic filler used in an electrically conductive paste, a resin for electromagnetic shielding, an antistatic coating, etc., and having excellent uniform dispersibility required for forming a paste so as to inhibit an increase in viscosity due to flocculation. This copper powder 1 forms a branch shape having a plurality of branches through the conglomeration of copper particles 2. The copper particles 2 have a spheroidal shape, with diameters ranging from 0.2 µm-0.5 µm, inclusive, and lengths ranging from 0.5 µm-2.0 µm, inclusive. The average particle diameter (D50) of the copper powder 1 in which the spheroidal copper particles 2 have conglomerated is 5.0 µm-20 µm. By mixing this tree-branch-shaped copper powder 1 into a resin, it is possible to produce an electrically conductive paste, etc., exhibiting excellent electric conductivity, for example.
Abstract:
A composition has a siloxane material and a filler material that comprises particles preferably with a particle size of less than 100 microns. The siloxane material can have a [—Si—O—Si—O]n repeating backbone, with preferably alkyl or aryl groups thereon, and b) as well as functional cross-linking groups thereon. The composition also has a filler material that includes particles that can be metal, semi-metal or ceramic particles. The composition may also include coupling agents, a catalyst, antioxidants, etc. The composition can be used in a wide variety of areas, such as an adhesive, encapsulant, solder or other layer in a semiconductor package or the like.