35results about How to "Good corrosion resistance and aging resistance" patented technology

The invention provides a preparation method of a silver nanowire flexible transparent conductive film based on phenoxy resin. The method comprises the following steps: coating a cleaning substrate with a dispersion liquid containing silver nanowires, and drying the dispersion liquid to obtain a silver nanowire conductive network layer on the substrate; coating a layer of transparent conductive adhesive on the silver nanowire layer to serve as a protective layer; drying the conductive adhesive, coating a layer of phenoxy resin solution on the conductive adhesive, and carrying out drying again to remove a solvent; and stripping the dried composite conductive film from the substrate to obtain the flexible transparent conductive film with low resistance and high flatness. According to the invention, the phenoxy resin is used as the flexible base material, and the transparent conductive adhesive layer is introduced between the phenoxy resin and the silver nanowire layer, so that the effectsof increasing the adhesion between the flexible base material and the silver nanowire layer and protecting the silver nanowire layer from oxidation are achieved. The problems of poor adhesion betweenthe silver nanowire conductive layer and other flexible substrates and high surface roughness and resistance value of the flexible conductive film in the existing preparation method are solved, and the preparation method has practical application value.

The invention discloses a high-mechanical-performance cable material for high power and a preparation method thereof. The high-mechanical-performance cable material comprises, by weight, 2-3 parts of stearic acid, 2-4 parts of activated magnesium hydrate, 3-5 parts of silicon dioxide powder, 2-3 parts of pyrophyllite powder, 3-5 parts of tris(2-ethylhexyl) phosphate, 2-4 parts of talcum powder, 45-65 parts of ethylene propylene diene monomer, 1-3 parts of 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol, 1-2 parts of antioxidant TPP, 15-20 parts of linear low-density polyethylene, 3-5 parts of 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 2-4 parts of sodium sulfonate, 2-4 parts of polycarbonate, 2-3 parts of m-xylylenediamine and 8-12 parts of filler. The high-mechanical-performance cable material has the excellent heat-resisting sublimability, launderability, gas fading resistance, mechanical performance retainability, and the added2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol and antioxidant TPP are used together to achieve a remarkable synergistic effect.

The invention provides a high-temperature-resistant CPVC (chlorinated polyvinyl chloride) plastic wood composite material. The composite material is prepared from the following components in percentages by weight: 30% of CPVC resin, 20% of PVCSG-8 resin, 20% of bamboo wood fiber powder, 10% of a light active calcium carbonate inorganic filler, 10% of a modifier, and 5% of a processing auxiliary agent; and the above components are mixed uniformly by utilizing a high-speed mixing machine, the mixing time is 1-2h, then the mixed components are extruded by using a twin-screw extruder, cooling shaping is performed by utilizing a mold matched with the twin-screw extruder, and after treatment is performed by utilizing a tractor, cutting is performed by utilizing a wood plate cutting machine to form composite material wood plates with different length specifications. According to the composite material provided by the invention, CPVC which is a engineering plastic with good high-temperature resistance and excellent aging resistance and corrosion resistance is specifically introduced, the high-temperature-resistant CPVC plastic wood composite material is prepared, and the use deformation temperature of the product is improved by 10 DEG C or more on the basis of conventional plastic wood.

The invention provides a method for preparing a flexible transparent conductive film of silver nanowires based on phenolic resin. A dispersion liquid containing silver nanowires is coated on a clean substrate, and after drying, a conductive network of silver nanowires is obtained on the substrate. layer; and then coating a layer of transparent conductive glue on the silver nanowire layer as a protective layer. After drying the conductive adhesive, coat a layer of phenolic resin solution on the conductive adhesive, and dry again to remove the solvent. The dried composite conductive film is peeled off from the substrate to obtain a flexible transparent conductive film with low resistance and high flatness. The present invention uses phenolic resin as the flexible substrate, and introduces a transparent conductive adhesive layer between it and the silver nanowire layer, so as to increase the bonding between the flexible substrate and the silver nanowire layer and protect the silver nanowire layer from oxidation . The method solves the problems of poor adhesion between the silver nanowire conductive layer and other flexible substrates and the large surface roughness and large resistance value of the flexible conductive film in the existing preparation method, and has practical application value.

The invention discloses a manufacturing method of a corrosion-resistant printed wiring board. An outer layer of the printed wiring board comprises a golden finger area and a wiring area. The manufacturing method includes the following steps of (1) electroplating the whole board, (2) manufacturing the golden finger area, (3) attaching a dry film to cover the golden finger area and then manufacturing the wiring area and carrying out post-process manufacturing to obtain the corrosion-resistant printed wiring board. Resin is adopted to replace ink in the prior art to serve as a solder mask bridge to be filled between golden fingers. Because the resin has good corrosion resistance and ageing resistance, corrosion-resistant performance of the printed wiring board is greatly improved.

The invention relates to a method for producing wood plastic composite pipes and pipe fittings. The method comprises the following steps of breaking and crushing natural vegetable fibers into powder of 200 to 300 meshes, drying, adding an appropriate amount of a titanate coupling agent into the powder, carrying out wrapping coupling at a coupling temperature of 50 to 60 DEG C, adding 100 parts of a PVC resin, 20 parts of a filler calcium carbonate, 4 parts of a TK-238 composite lead stabilizer, 3 parts of 135A chlorinated polyethylene, 0.2 parts of 60# paraffin wax, 0.3 parts of stearic acid, 0.4 parts of lead stearate, 1 part of sodium bicarbonate, 0.8 parts of an azodicarbonamide foaming agent and 4 parts of an acrylate modifier into coupling products, mixing at a high speed of 2400 r / min at a mixing temperature of 100 to 110 DEG C, adding the mixture into a cold mixing machine, carrying out cold mixing at a cold mixing temperature of 40 to 50 DEG C, putting the cooled mixture obtained by cold mixing into a conical double-screw extruder or an injection molding machine, carrying out molding to obtain different types and specifications of the wood plastic composite pipes, pipe fittings or three-layer wood plastic silencing drain-pipes.

The invention discloses an acid-modified potash water glass-fluorocarbon-modified styrene-acrylic emulsion composite coating and a preparation method thereof. The composite coating comprises a matrix component, an assistant component and filler. The matrix component is prepared from, by weight, 20-30 parts of acid-modified potash water glass and 5-12 parts of fluorocarbon-modified styrene-acrylic emulsion. The acid-modified potash water glass is adopted, the moisture absorption of a matrix is effectively reduced, and the water resistance of the coating is improved; meanwhile, the fluorocarbon-modified styrene-acrylic emulsion has the advantages of being high in chemical corrosion resistance and artificial aging resistance and the like, and the overall use performance of the coating is greatly improved.

The invention relates to a low-temperature anaerobic biogas fermentation tank. The low-temperature anaerobic biogas fermentation tank comprises a tank body, and a gas storage chamber and a fermentation chamber which are arranged in the tank body. A feeding pipeline is arranged at one side in the tank body, and a discharging pipeline is arranged at the other side; the top of the tank body between the feeding pipeline and the discharging pipeline is provided with the gas storage chamber, the top of gas storage chamber is provided with a center hole and a gas outlet; a manual stirring device is arranged in the center hole, the tail end of the manual stirring device goes through the gas storage chamber and stretches into the fermentation chamber; a gas outlet pipeline is arranged in the gas outlet; an inoculation pipeline is arranged between the feeding pipeline and the inner wall of the tank body; the outer wall of the tank body is sequentially provided with a thermal insulation layer and a protective layer from inside to outside, a low temperature strain activation chamber is arranged between the fermentation chamber and the bottom of the tank body, and the low temperature strain activation chamber is connected with the inoculation pipeline; and a manual discharging pump is arranged in the discharging pipeline. The tank has the advantages of simple structure, convenient use, good sealing performance, good thermal insulation performance, long service life and the like, and can realize the normal biogas fermentation of the north in winter without an external energy supply.

The invention relates to a friction-resistant and high-shear-resistant composite rubber material containing fluorine-containing terminal active hydroxyl groups, which belongs to the field of friction-resistant materials. The invention provides a friction-resistant high-shear-resistant composite rubber material, the raw materials of which include: 0.1-10 parts by weight of a fluorine-containing terminal active hydroxyl friction-resistant active surface modified resin, 50-90 parts by weight of semi-vulcanized rubber; the fluorine-containing terminal The structural formula of the radical active hydroxyl anti-friction active surface modification resin is shown in formula I, wherein, 0<m≤200, 0<n≤200, M is perfluorohexylsulfonyl, perfluorohexyl, perfluorohexylsulfonyl , perfluorooctylsulfonyl or perfluorooctanoyl. The invention prepares the semi-aromatic polyether amide with high-performance fluorine-containing end groups and active hydroxyl graft groups, and uses its excellent comprehensive performance to coat and compound the semi-aromatic polyetheramide with traditional rubber to improve the friction performance of rubber seals.

The invention relates to a friction-resistant and high-shear-resistant composite rubber sealing material, which belongs to the field of friction-resistant materials. The invention provides a friction-resistant and high-shear-resistant composite rubber sealing material. The raw materials include: 0.1-10 parts by weight of a friction-resistant active surface-modified resin, 50-90 parts by weight of semi-vulcanized rubber; the structural formula of the friction-resistant active surface-modified resin As shown in formula I, wherein, 0<m≤200, 0<n≤200. The present invention introduces soft segments of different carbon chain lengths containing polyether amine into the molecular main chain of semi-aromatic polyamide plastics, thereby endowing traditional semi-aromatic polyether amide with excellent flexibility and stress deformation while maintaining excellent friction performance. Restoration: The present invention introduces active carboxyl groups into the main chain of polymer molecules through copolymerization, and greatly improves the interfacial bonding force between materials and rubber products through the effects of intermolecular hydrogen bonds and van der Waals forces, thereby overcoming traditional rubber-plastic composite materials. The problem of poor interface bonding force and shear resistance.