82 results about "Particulate composite" patented technology

The invention relates to a method for producing particulate composite materials. According to the method, solid inorganic or organic particle agglomerates or particle aggregates that are provided in a dry state, particularly in powder form, are first reduced in size in the gas phase or in a gaseous carrier medium in the presence of organic matrix particles by applying energy. The obtained comminuted particles are dispersed into the organic matrix particles, especially embedded thereinto and/or attached thereto. The composite materials produced in said manner can be used in many different ways and are suitable in particular for use in a large variety of plastic materials, coating materials, paints, and lacquers, especially coating powders, to modify properties during use in the corresponding products and similar.

A particulate composite of silicon, tin, and aluminum (or other suitable metal) is prepared as a negative electrode composition with increased lithium insertion capacity and durability for use with a metal current collector in cells of a lithium-ion battery or a lithium-sulfur battery. This electrode material is formed such that the silicon is present as a distinct amorphous phase in separate matrix phases of crystalline tin and crystalline aluminum. While the distinct tin and aluminum phases provide electron conductivity, each phase accommodates the insertion and extraction of lithium in the operation of the cell and all phases interact in minimizing mechanical damage to the material as the cell experiences repeated charge and discharge cycles. Other suitable metals for use in the composite with silicon and tin include copper and titanium.

The invention relates to polyphenylene sulfide (PPS)/nano-calcium carbonate mixture and a preparation method for the fiber thereof. The method includes the steps of mixing polyester slices, nano-calcium carbonate particulates, reactive monomer and other additives in a high speed mixer while rising the temperature to approximately 205 DEG C so as to enable the polyphenylene sulfide slices to intenerate and the nano-calcium carbonate and other additives to be evenly adhibitted onto the polyphenylene sulfide slices, without heavy conglutination between the particles on the polyphenylene sulfide slices. The polyphenylene sulfide (PPS)/nano-calcium carbonate mixture prepared through the method has excellent processability and can be made into textile fiber, thin film or reinforcement plastics by means of melt blown or melt spinning process. The invention can greatly reduce the production cost and bring good economic benefits. The polyphenylene sulfide(PPS)/ nano-calcium carbonate mixture has good thermal stability, flame retardancy, chemical corrosion resistance and good mechanical property and spinning property; therefore the polyphenylene sulfide(PPS)/nano-calcium carbonate mixture is widely applicable to the industrial sectors like chemical industry, light industry and mechanical industry, and is particularly good for accelerating the popularization and application of high-temperature house-bag dust removal. The preparation method has the advantages of simple process, easy control, low cost, short production period, environment friendly and particularly being applicable to the industrial production.

PCT No. PCT/FR96/01633 Sec. 371 Date Jan. 20, 1998 Sec. 102(e) Date Jan. 20, 1998 PCT Filed Oct. 18, 1996 PCT Pub. No. WO97/15604 PCT Pub. Date May 1, 1997Composite latex whose average particle size is between 30 and 150 nm, as these particles result from polymerization of a mixture hydrophobic monomers composed of styrene and (meth)acrylic esters to produce an emulsion in an aqueous solution of a water-soluble or water-dispersible amphiphilic copolymer having a molecular weight of between 500 and 5,000 and whose acid number of less than 500, said latex being composed of a combination of hydrophobic and hydrophilic monomers incorporating carboxylic acid functions in the presence of a radical-producing initiator, wherein said aqueous water-soluble amphiphilic polymer is free of any other surfactant or protective colloid and wherein the mass percentage of amphiphilic copolymer in relation to the dry extract of the latex between 10 and 50%.

Particulate composite materials and devices comprising the same are provided.

As an article of manufacture, particulate composites containing, in combination: particles of inorganic material, a component for conferring on the composites the capability of floating in a medium including one or more substance capable of forming a binder matrix, a component for conferring on the composites the capability of adherence to the binder matrix, and a component for conferring on the composites the capability of adherence of the flotation conferring to the inorganic material; their production; and their use in a binder matrix.

The present invention concerns a new type of grain refiners for steel, in the form of a particulate composite material, containing a high volume fraction of tailor-made dispersed particles, with the purpose of acting as potent heterogeneous nucleation sites for iron crystals during solidification and subsequent thermo-mechanical treatment of the steel. The material comprises a composition of particles of X_aS_b or X_aO_b and the element(s) X, where X is one or more elements selected from the group Ce, La, Pr, Nd, Y, Ti, Al, Zr, Ca, Ba, Sr, Mg, Si, Mn, Cr, V, B, Nb, Mo and Fe, and S is sulphur, (O is oxygen), wherein said material additionally contains oxygen, sulphur, carbon and nitrogen, wherein the sulphur (or oxygen) content is between 2 and 30% by weight of said material, while the total content of oxygen (or sulphur), carbon and nitrogen and said other elements selected from the group X is between 98 and 70% by weight of said material, and the said material contains a high volume fraction of finely dispersed X_aS_b or X_aO_b particles embedded in a metallic matrix X. The invention further concerns methods for production and use of the composite material.

The invention relates to the field of graphene preparation, and discloses a preparation method of graphene oxide/nano-gold particulate composite material with mono-atomic thickness. In prior arts, the preparation of mono-atomic thickness graphene oxide/nano-gold particulate composite material is complicated, requires special equipment, and cannot be prepared with industrialized production. The present invention assists in solving the problems, and provides a simple method for preparing the composite material with high efficiency. The preparation method comprises the steps that: (1) obtained graphene oxide is subject to an acylation reaction; (2) graphene oxide processed through the acylation reaction is subject to a reaction with a chlorauric acid solution; (3) the pH value of the material is regulated, the depositions are filtered, such that the graphene oxide/nano-gold particulate composite material is obtained. The method of the present invention has advantages of simple technology, high yield, large output, good product quality, and is suitable for industrialized production.

The present disclosure relates to novel particulate composite materials comprising a graphitic core particle associated with SiOx nanoparticles (0.2<=X<=1.8), and coated by a layer of non-graphitic carbon, e.g., pyrolytic carbon deposited by chemical vapor deposition (CVD). Also included are processes for making such particles as well as uses and downstream products for the novel composite material, in particular as an active material in negative electrodes in Li-ion batteries.

An iron-based powder metallurgical composition is provided comprising an iron or iron-based powder and a particulate composite lubricant, the composite lubricant comprising particles having a core comprising a solid organic lubricant having fine carbon particles adhered thereon. A particulate composite lubricant and a method for producing the same also are provided.

A particulate composite ceramic material comprising: particles of at least one first ultra-high-temperature ceramic “UHTC”, the outer surface of said particles being at least partially covered by a porous layer made of at least one second ultra-high-temperature ceramic in amorphous form; and the particles defining a space therebetween; optionally, porous clusters of said at least one second ultra-high-temperature ceramic in amorphous form, distributed in said space; a dense matrix and at least one third ultra-high-temperature ceramic in crystallized form at least partially filling said space; optionally, a dense coating made of at least said third ultra-high-temperature ceramic in crystallized form, covering the outer surface of said matrix, said matrix and said coating representing 5% to 90% by mass with respect to the total mass of the material.

Part comprising said particulate ceramic composite material.

Method for manufacturing said part.

A granular polymer composition contains a bundle of metallic fibres parallel to each other, the first high-molecular material used as the first coated layer of each metallic fibre, and the second high-molecular material used as the second coated layer of each metallic fibre. It car be used as the raw material of plastic objects for low cost and higher antistatic and electromagnetic sheiding effect.

An iron-based powder metallurgical composition is provided comprising an iron or iron-based powder and composite lubricant particles, with the composite lubricant particles comprising a core of 10-60% by weight of at least one primary fatty acid amide having more than 18 and not more than 24 carbon atoms and 40-90% by weight of at least one fatty acid bisamide, with the core having nanoparticles of at least one metal oxide adhered thereon. Further provided is a particulate composite lubricant as well as a method of preparing such lubricant.