85results about How to "RoHS Compliant" patented technology

The invention provides a high temperature self-repairing conductive silver adhesive. The high temperature self-repairing conductive silver adhesive is prepared from the following raw constituents by parts: 100 parts of epoxy resin, 10-30 parts of curing agent, 10-40 parts of epoxy diluent, 240-990 parts of silver pieces, 3-20 parts of coupling agent and 5-20 parts of self-repairing microcapsule; wherein the self-repairing microcapsule is composed of the following raw constituents by parts: 100 parts of epoxy resin, 8-20 parts of latent curing agent, 30-60 parts of diluents, 0.5-2.5 parts of emulsifying agent, 500-800 parts of nano silver wires, 5-16 parts of coupling agent, 60-120 parts of capsule wall material, 0.5-2 parts of antifoaming agent and 150-900 parts of deionized water. The invention also provides a preparation method of the high temperature self-repairing conductive silver adhesive. The high temperature self-repairing conductive silver adhesive has the positive effects that the repairing efficiency is high, the repairing effect is expanded on the basis of the original conductive network, crack-conductive network double repairing is realized, and the long-term using effect of the conductive adhesive is guaranteed, the cost is saved, and the reliability and service life of the conductive adhesive in high temperature working environment are improved.

The invention discloses a method of preparing aluminum or aluminum alloy trivalent chromium chemical conversion film, comprising: aluminum or aluminum alloy work pieces are activated for 1 to 2 minutes in sodium hydroxide solution with a concentration of 50g/L to 100g/L and activation reaction temperature is 5 deg C to 30 deg C; using deionized water to wash the work pieces; putting the washed work pieces into mixed aqueous solution of soluble chromic salt and phosphoric acid to make a chromaking for 6 to 10 minutes, wherein, chromium ion has a concentration of 1g/L to 20g/L, and the phosphoric acid has a concentration of 1g/L to 25g/L; using dilute sodium hydroxide or dilute sulfuric acid to adjust reaction system PH value to 1.6 to 4.0 and the chromaking temperature to 10 deg C to 60 deg C. The invention solves a shortcoming that in existing technology hexavalent chromium has great toxicity. Technological process and products of the invention reach environmental requirements. The produced trivalent chromium chemical conversion film has the same quality with hexavalent chromium chemical conversion.

The present invention relates to computer hard disc fitting production, and is especially chemical nickel plating and washing process for computer hard disc part of aluminum material. The chemical nickel plating and washing process includes: degreasing with solvent, degreasing with alkali solution, acid soaking, eliminating ash, immersion plating zinc, chemical nickel plating, deactivating, many times of water washing after each of the above steps, stoving and other steps. During the process, the used water is filtered for reuse so as to save water.

The invention discloses a UV (ultraviolet) curing ink and application thereof. The UV curing ink comprises the following components in percentage by weight: 30-40% of high-functionality polyurethane acrylate, 10-20% of dual-functionality polyurethane acrylic resin, 5-10% of amine-modified polyether acrylate prepolymer, 5-10% of thermoplastic acrylic resin, 10-15% of 1,6-hexanediol diacrylate, 2-4% of photosensitizer, 1-2% of nano aluminum oxide dispersion and 15-20% of filler. The UV photocuring ink is used for temporary protection in the glass surface working process; and after the UV photocuring ink is subjected to UV photocuring, a tough ink layer can be formed on the glass surface, thereby effectively ensuring the glass not to be scratched in the surface working process. After finishing the glass working, the glass can be soaked in 5% sulfuric acid solution, which is heated to 50 DEG C, to remove the UV curing ink on the glass surface without influencing the glass.

The invention discloses a functional modified ABS (acrylonitrile butadiene styrene) profiled base station antenna housing and a production method thereof; the addition to easy access to materials and low price, the functional modified ABS profiled base station antenna housing has the functions such as environmental friendliness, excellent mechanical properties, high heat resistance, excellent dielectric property, and stable resistance to ultraviolet irradiation, especially excellent solar reflectivity. The functional modified ABS profiled base station antenna housing is produced from, by weight, 75-80 parts of ABS resin, 5-10 parts of AS resin, 5-10 parts of high-mobility AS (acrylonitrile-styrene) resin, 5-10 parts of AlphaMSAN (Alpha-methylstyrene-acrylonitrile) heat-resistant modified resin, 1-2 parts of lubricant EBS, 2.0-3.0 parts of photostabilizer UV326, 0.3-0.5 part of antioxidant GM, and 5-10 parts of a surface-modified inorganic nonmetal compound.

The invention discloses environment-friendly flame-retardant heat-conducting glue and a preparation method thereof. The preparation method comprises the following steps: diluting a coupling agent by using absolute ethyl alcohol, regulating the pH value of the diluted solution, adding a heat-conducting filler, and mechanically stirring; centrifuging, washing, and drying, thereby obtaining a component A; uniformly mixing an epoxy resin, a curing agent and a curing accelerator by using a high-speed dispersion machine, thereby obtaining a low-viscosity component B; and uniformly grinding and mixing the component A, the component B, an organic phosphorus flame retardant and aluminum hydroxide, vacuumizing, heating the mixture at the temperature of 80-90 DEG C, and heating at the temperature of 130-150 DEG C, thereby obtaining the environment-friendly flame-retardant heat-conducting glue. The environment-friendly flame-retardant heat-conducting glue is low in viscosity, high in heat conductivity coefficient, good in mechanical property and high in acid-base resistance and corrosion resistance, the flame-retardant level reaches UL94V-0, the heat dissipation problem of a general electronic component can be solved; because the heat-conducting glue has good flame-retardant property, when the heat-conducting glue is applied to high-voltage and high-temperature electrical equipment, the on-fire potential safety hazard of the electronic component is effectively reduced.

The invention discloses a packaging adhesive tape which is prepared by taking a polyurethane modified chlorinated polypropylene composite as a base material, wherein the polyurethane modified chlorinated polypropylene composite comprises the following raw materials in parts by weight: 100 parts of chlorinated polypropylene, 60-85 parts of a chlorinated polypropylene graft polymer, 12-24 parts of a toughened master batch, 5-20 parts of a halogen-free flame retardant, 0.5-4 parts of a coupling agent, 1-3 parts of an anti-oxidant, 2-4 parts of stearic acid, 1-3 parts of dioctyl phthalate, 0.5-2 parts of ethylene bis stearamide and 0.2-4 parts of polyethylene wax; the composite is formed by conducting graft modification on chlorinated polypropylene through polyurethane and maleic anhydride, and is used for preparing a high-performance high-molecular composite, and the finally obtained composite has relatively high abrasion resistance, weather resistance, impact resistance, corrosion resistance and high-low temperature resistance.

The invention discloses an environment-friendly type cleaning agent, which contains the following components in parts by weight: 10%-20% of 70# solvent naphtha, 10%-20% of 90# solvent naphtha, 30%-40% of 120# solvent naphtha, 20%-30% of 190# solvent naphtha, 5%-10% of industrial alcohol and 2%-5% normal butanol, and the sum of the percentage of the using amount of the raw material is 100%. The production method of the environment-friendly type cleaning agent has simple technique and low production cost; the technical indexes are in accordance with green and environment-friendly requirements; and the environment-friendly type cleaning agent is an environment-friendly type cleaning agent with excellent properties, and is widely used for the industries such as the electronic industry, the refrigeration industry, the automobile industry, the mold industry, the precision machining industry and the like.

The present invention relates to a color conversion layer (4) comprising at least one light emitting material (7) comprising at least one composite particle (1) surrounded partially or totally by at least one surrounding medium (71); wherein said light emitting material (7) is configured to emit light in response to an excitation and the at least one composite particle (1) comprises a plurality ofnanoparticles encapsulated in an inorganic material; and wherein said inorganic material (2) has a difference of refractive index compared to the at least one surrounding medium (71) superior or equal to 0.02 at 450 nm. The present invention also relates to display apparatus.

An environment-friendly inflaming-retarding acrylonitrile-butadiene-styrene (ABS) material belongs to the technical field of high polymer materials, which comprises the following components, by weight: 50-90 parts of ABS, 10-50 parts of flame retardants, 5-20 parts of flame retardant association effect agents, 0-2 parts of antioxidants and 0-2 parts of processing agents. The ABS material is friendly to the environment and has high inflaming-retarding performance and an excellent mechanics effect.

The invention discloses a method for preparing a La0.5Li0.5TiO3 fiber reinforced Ag based electrical contact material. The method includes preparation of La0.5Li0.5TiO3 conductive ceramic fiber by electrospinning, implantation of silver mirror reaction in the process of electrospinning for surface silver plating modification of the La0.5Li0.5TiO3 conductive ceramic fiber, and collection of specificall oriented silver plating La0.5Li0.5TiO3 fiber between bridge-type electrodes; immersion orientation of the silver plating La0.5Li0.5TiO3 fiber in molten Ag to form a precursor, replenishment of Ag powder for ingredient proportion, and isostatic pressing billet preparation, sintering, re-pressing, after-combustion, hot extrusion drawing molding and other successive processes to obtain the electrical contact material. A La0.5Li0.5TiO3 reinforcement phase is inlayed in an Ag matrix in the manner that fiber orientation is perpendicular to a working face, the processing stress, working current, thermal conductivity and the like of the electrical contact material all can be conducted by pure silver pathways among the La0.5Li0.5TiO3 fiber structures, and the problems of high resistivity, low elongation percentage, short electric life and the like of a Cd-free environmentally-friendly electrical contact material can be improved.

The invention relates to a circuit forming method of an outer layer of a circuit board. The method comprises: a circuit board with an outer layer circuit needing to be processed is provided; pouring and coating of deep-curing UV ink are carried out on a hole needing protection and/or a predetermined region needing protection at a circuit board surface on the circuit board; exposure is carried out on the condition of 100-300mJ/cm<2>; and development, etching, and membrane removing are carried out on the exposed circuit board to form an outer layer circuit of the circuit board. According to the invention, the deep-curing UV ink is used for manufacturing the circuit board and the inside of the hole and the region with the surface needing protection are coated with the ink; and deep curing can be realized after UV light source irradiation. Therefore, chemical impacts on a weak base developing solution with the pH being approximately equal to 10 and an acid etching solution with the pH being 2 to 3 and thus the anti-etching effect is realized.

The invention discloses UV (ultraviolet) curing paint and application thereof. The UV curing paint comprises the following components in percentage by weight: 30-40% of high-functionality polyurethane acrylate, 10-20% of bifunctional polyurethane acrylic resin, 5-10% of acrylic ester phosphate, 5-10% of high-acid-value acrylic polyalcohol resin, 10-15% of 1,6-hexanediol diacrylate, 2-4% of photosensitizer, 1-2% of nano aluminum oxide dispersion and 15-20% of solvent. The UV photocuring paint is used for temporary protection in metal surface processing. After being subjected to UV photocuring, the UV photocuring paint can form a tough paint layer on the surface of metal; and the paint layer has favorable metal adhesive force, high surface hardness and favorable scratch resistance, and can effectively ensure that the metal can not be scratched in the surface processing course. Besides, after the metal is processed, the UV photocuring paint layer can be quickly removed with alkaline water, and no influence can be caused on the metal itself.

The invention provides a novel anti-radiation material and a CT (computed tomography) chassis made with the novel anti-radiation material. The anti-radiation material comprises a resin material, a fiber material and a tungsten-molybdenum material. Due to combination of the resin material and the fiber material, high strength of the material can be ensured. Moreover, since the tungsten-molybdenum material of a high atomic number is used, the function of absorbing radiation can be achieved, and the impact on the human body and the environment is very low.

The present invention relates to a composite particle (1) comprising a plurality of nanoparticles (3) encapsulated in an inorganic material (2), wherein the plurality of nanoparticles (3) is uniformlydispersed in said inorganic material (2). The present invention also relates to a light emitting material, a support supporting at least one composite particle (1) and/or a light emitting material and an optoelectronic device comprising at least one composite particle (1) and/or a light emitting material.

The present invention provides a conductive silver paste for LTCC (Low Temperature Co-fired Ceramic) ceramic substrate. According to the mass percent, the conductive silver paste is formed by 82%-86%of silver powder, 3%-4% of polymer resin, 0.2%-1.1% of glass powder and 10%-15% of solvent. The polymer resin is formed by ethyecellulose, carboxymethylcellulose and polyaspartic acid. The conductivesilver paste obtained by employing the preparation method provided by the invention is good in conductivity, high in adhesive force, and smooth and dense in appearance. The bonding force of the sliverlayer and the ceramic interface is high, and the internal portion of the device cannot generate cracking and delamination.