137results about How to "Low aging resistance" patented technology

The invention discloses a super-high early-strength grouting material for repairing a ballastless track structure of a high speed railway, which is prepared by the following steps of: sequentially adding water, polymer emulsion, a water reducing agent, a rheology accessory agent and an antifoaming agent; adding admixture, cement, an expansion agent, a coagulator and a retarder, and stirring and blending the materials at a high speed. The parts by weight of the ingredients are as follows: 100 parts of superfine cement, 50-150 parts of admixture, 25-50 parts of redispersible emulsion powder, 3-10 parts of polymer emulsion, 5-25 parts of expansion agent, 0.1-1.0 part of carboxylic acid water reducing agent, 0.1-10 parts of coagulator, 0.1-5 parts of retarder, 0.001-0.005 parts of rheology accessory agent, 0.001 part of polyether-siloxane copolymer antifoaming agent and 20-70 parts of water. The material disclosed by the invention has the advantages of low viscosity, super-high early-strength, low cost, fatigue resistance, aging resistance and water erosion resistance, and the like, so that the material can be used for repairing the concrete gaps of ballastless tracks of high speed railways, gaps of cement asphalt mortar filling layers, cracks and damages.

The invention relates to the field of semiconductor electronic materials, and in particular relates to a silver nanowire doped conductive silver colloid and a preparation method thereof. The raw materials of the silver nanowire doped conductive silver colloid provided by the invention comprise the following components in percentage by weight: 25-60% of micrometer silver powder, 5-30% of silver nanowires, 20-50% of epoxy resin, 1.6-4% of curing agent, 5.8-9.2% of dissolvent, 0.4-1.6% of accelerant, 0.04-0.16% of toughening agent and 0.8-2.4% of additive. The conductive silver colloid is prepared by mixing and doping single-crystal silver nanowires and silver granules, thus, the total silver doping amount is reduced to 35-45%, and the conductive silver colloid has a favorable conductive effect, high shear strength, low working temperature and good ageing-resistant performance, and the cost of the conductive silver colloid is reduced. The silver nanowire doped conductive silver colloid can be widely applied to the fields of solar cell (film, crystal silicon) conductive colloids, conductive colloid LED (Light-Emitting Diode) package and the like.

The invention discloses a synthetic resin adhesive for an E0/E1 grade flakeboard, which is melamine modified urea-formaldehyde resin; formaldehyde with the concentration of 48 percent in mass percentage is adopted as a raw material; the adhesive comprises the following reaction materials in percentage by mass: 4.0 to 5.0 percent of melamine, 43.0 to 45.0 percent of urea, 48.0 to 51.0 percent of formaldehyde, 1.00 to 1.10 percent of addition agent, 0.20 to 0.22 percent of polyvinyl alcohol and proper acid and alkali; the total molar ratio is between 1.08 and 1.11; and the materials are reacted and synthesized, thereby preparing the adhesive. The high-concentration formaldehyde is adopted as the raw material; the adhesive has excellent bonding strength, proper curing time, good storage stability and the free formaldehyde content of between 0.06 and 0.08 percent; with the adhesive, the E1 and E0 flakeboard with excellent quality can be stably produced; and the adhesive has the advantages of low adhesive application amount, strong process adaptability, rapid curing, etc.

The invention disclose mono-component mould proof anti-flaming organosilicon mechanical seal agent and its manufacturing method. Its component and part by weight proportioning are as follows: hexagonal crystal type magnesium hydroxide 20-40, end hydroxyl dimethyl polysiloxane 40-60, 40% weight percentage organosilicon quaternary ammonium salt antibacterial agent alcohol solution 3-6, vapour phase process reinforcing silica 5-7, silane coupler 2-5, and catalyst 2-3. The grain size of the hexagonal crystal type magnesium hydroxide is 1000-1500nm. The water content is lower than 0.1% weight percentage. The viscosity of the end hydroxyl dimethyl polysiloxane is 2000-10000mPa.S. It has the advantages of high flame retardancy, antibiosis, ageing resistance, wide using temperature range, and low cost. It expands organosilicon seal agent using range, and has important meaning in our country mechanism industry.

The invention discloses a synthetic resin cementing compound used for an EO-stage fiberboard. The synthetic resin cementing compound consists of melamine modified urea resin and a firming agent and is characterized in that the compositions of reaction material of the urea resin by weight percentage are: 4.0 to 6.0 percent of the melamine, 40.0 to 42.0 percent of urea, 52.0 to 56.0 percent of formaldehyde, and 0.4 to 0.6 percent of an accelerating agent; acid and alkali are appropriate and the total mol ratio is between 0.90 and 0.93; and the cementing compound is obtained by the systemization and reaction of the materials. The cementing compound has good cementation strength, appropriate curing time, and the content of 0.06 to 0.08 percent of free formaldehyde, etc. E1 and the E0-stage fiberboard with good quality can be produced stably and have the advantages of low glue feeding amount, strong adaptability to the hot press molding technology and high curing speed in the hot press molding process, etc., thereby meeting the need of the market on products of high environmental performance fiberboards.

The invention relates to a preparation method of an emulsion type polyacrylate pressure-sensitive adhesive for a reflecting film. Hard monomers (5-15 parts of vinyl acetate and 5-15 parts of methyl methacrylate) and soft monomers (30-50 parts of ethylhexyl acrylate and 10-30 parts of ethyl acrylate) are subjected to quaternary monomer copolymerization, and consequently, the bonding strength of the pressure-sensitive adhesive is improved obviously. In addition, 0.3-1 part of lauryl sodium sulfate and 1-3 parts of sodium allyloxyhydroxypropyl sulfonate are taken as emulsifying agents; a substance with a surfactant is polymerized to a macromolecular chain to take the place of a part of the micromolecular emulsifying agent lauryl sodium sulfate, and therefore, the aging resistance and the water resistance of the pressure-sensitive adhesive are improved. The emulsion type pressure-sensitive adhesive prepared by use of the preparation method is high in permanent adhesion, high in peel strength, and high in combination properties such as aging resistance, high temperature resistance, water resistance and acid rain resistance, and capable of meeting the requirement on long-term use of the reflecting film. In addition, the preparation method is simple in process, free from environment pollution, low in cost, and suitable for large-scale industrial production.

The invention relates to ultraviolet ray and infrared ray adsorption blue transparent glass, which is formed by that Fe2O3 and CeO2 are added in dry SiO2 and other auxiliary materials, and then the glass is directly fired under the high-temperature melting and low-temperature annealing processes, and the glass is blue and transparent; Visible light transmittance of the glass with 2mm is more than 70 percent, the transmittance of the ultraviolet rays with 200nm-390nm can be reduced to 10-7, the transmittance of the infrared rays with 780nm-1300nm is reduced to 10-6, and the transmittance of the infrared rays with 1300nm-2000nm is reduced to 10-5. The ultraviolet ray and infrared ray adsorption blue transparent glass has low cost, can completely achieve the technical data of vacuum coated glass with Europe and America technology, which is applied to eyesight protection glass products, and can thoroughly overcome the low oxidation resistance, ageing resistance and friction resistance of the vacuum coated glass and is mainly applied to the eyesight protection glass products such as arc welding mask lens, spectacle lens, computer screens, television screens and the like.

The invention provides a synthetic method of resin with mixing and solidification functions. The synthetic method of the resin with the mixing and the solidification functions comprises the steps that 80-110 g of polyisoprene dibasic alcohol, 4-10 g of 3-ethyl-3-hydroxymethyleneoxetane, 5-12 g of hydroxyl acrylate, 0.1 g of polymerization inhibitor para hydroxybenzene methyl ether and 0.01 g of catalyst dibutyltin dilaurate are added into a three-mouth flask with a thermometer, the temperature is raised to 65 degrees, then 18-32 g of diisocyanate starts to be dropwise added, the temperature is controlled to be 70-75 degrees, and reaction is performed for 2-3 h. The content of NCO perssad is analyzed by an infrared spectrometer, until the NCO peak disappears completely, the heating reaction is stopped, and the urethane acrylate modified by oxetane can be obtained. The resin with the mixing and the solidification functions can manufacture three-dimensional products with low shrinking percentage, low warping, good flexibility, ageing resistance, high machining precision, good photocuring performance and excellent mechanical strength; in addition, the synthetic reaction is simple in technology and easy to control, no special equipment is needed to be used, no solvent is needed, and the production cost is low.

The invention discloses a liquid silicone rubber composition having low permanent compression deformation, which comprises the following components in parts by mass: 100 parts of vinyl polydimethylsiloxane, 1-50 parts of inorganic filler, 1-30 parts of structurized control agent, 0.01-10 parts of crosslinking agent, 0.01-2 parts of platinum catalyst, 0.001-1 part of inhibitor, 0.1-20 parts of magnesium oxide and 0.01-10 parts of compression deformation improver. The invention also discloses a preparation method of the liquid silicone rubber composition having low permanent compression deformation. According to the invention, after the compression deformation improver is introduced into the vinyl polydimethylsiloxane, the permanent compression deformation performance can be obviously reduced; and the liquid silicone rubber composition still has very good processability and is suitable for being used as liquid silicone rubber of a spark plug sheath of an automobile.

The invention provides a stone-imitating coating and a preparation method thereof. The stone-imitating coating includes, by weight, 300-500 parts of deionized water, 2-3 parts of a sterilizing agent,2-5 parts of cellulose, 1-2 parts of a dispersant, 2-4 parts of a defoaming agent, 7-10 parts of a film forming additive, 7-10 parts of propylene glycol, 1-3 parts of a pH regulator, 150-200 parts ofa binder, 2-4 parts of a thickener, 300-500 parts of sintered colored sand, and 5-15 parts of protective glue. The sintered colored sand is made from quartz sands in 40-120 meshes, toner percentage being 0.8-1.2%. By using the sintered colored sand instead of calcium carbonate sand, regulating raw material ratio and optimizing process parameters, the coating has excellent performance, good stability and good anti-aging effect. The preparation method has simple process and can achieve industrial large-scale production; the product brings excellent economic benefit to enterprises and has extensive prospect.

The invention relates to a light-curing colored paint. The light-curing colored paint is technically characterized by comprising the following components in percentage by weight: 0.2 to 8 percent of light amine-producing agent, 0.5 to 10 percent of amine proliferation agent, 5 to 30 percent of acetoacetic ester compound, 30 to 65 percent of acrylate light-curing resin, 10 to 40 percent of acrylate activated thinner, 0.1 to 8 percent of photoinitiator and 4 to 8 percent of pigment. The light amine-producing agent contained in the system generates amine catalysts under ultraviolet irradiation, further catalyzes to start the amine-producing proliferation reaction of the amine proliferation agent, rapidly generates massive amines in a coating and automatically spreads to the whole coating system to generate amines along regional chemistry. Therefore, a crosslinked curing film is formed, and an invisible region on the surface or at the bottom of a film layer can be rapidly cured.

The invention relates to the technical field of sole, and in particular to a foaming chameleon sole and a preparation method thereof. The foaming chameleon sole consists of the following raw materials by weight: 20-30 parts of natural rubber, 30-40 parts of EVA resin, 10-20 parts of silicon dioxide, 8-15 parts of nano calcium carbonate, 1-3 parts of zinc oxide, 0.6-1 part of stearic acid, 1.5 parts of a vulcanizing agent, 0.5-2 parts of an accelerator, 1-2.5 parts of a foaming agent, 0.2-0.6 part of other additives and 1-3 parts of a pigment. The preparation method of the foaming chameleon sole of the present invention uses the above-described materials, and strictly controls the weight ratio of the raw materials; the prepared foam chameleon sole has the characteristics of wear resistance, water resistance, aging resistance, low production cost, light weight, good cushioning performance, high comfort, and ventilation effect; and a laser machining machine can be used in processing for arbitrarily design of the desired patterns and colors.

The invention relates to the technical field of alloy materials, in particular to an antistatic PC-ABS (polycarbonate-acrylonitrile butadiene styrene) alloy material and a preparation method thereof.The antistatic PC-ABS alloy material is prepared from the following raw materials in parts by weight: 60 to 80 parts of PC resin, 20 to 30 parts of ABS resin, 2 to 4 parts of a static conducting agent, 5 to 10 parts of an anti-aging agent, 12 to 18 parts of a toughening modifier, 6 to 9 parts of a lubricant, and 2 to 8 parts of a compatilizer, wherein the static conducting agent adopts graphene with 1 to 20 layers. The antistatic PC-ABS alloy material has the advantages that the surface resistivity can reach 104 ohm, the antistatic property is excellent, the antistatic effect is lasting, and the anti-impact property and tensile strength are good.

The improved emulsion polymerization process of preparing heat resistant alpha-methylstyrene-acrylonitrile copolymer features that 30-50 wt% of the monomers, emulsion and initiator are pre-emulsified; and the rest monomers, emulsion and initiator are emulsified, heated to 65-70 deg.c and polymerized while adding the pre-emulsion until to obtain solid content higher than 36 %, where, the initiator is oil soluble azo diisobutyronitrile or azo diisoheptonitrile. The present invention has stable emulsion system, complete and homogeneous copolymerization, copolymerizing conversion rate as high as 98 %, low residual monomer rate, high Vicat temperature and other advantages.

The invention discloses a halogen-free flame-retardant wood-plastic co-extrusion composite material and a preparation method thereof. The halogen-free flame-retardant wood-plastic co-extrusion composite material comprises a core layer and a halogen-free flame-retardant surface layer for coating the core layer, wherein the core layer comprises plant fibers, PE plastic, a compatilizer, an antioxidant, a lubricant and an inorganic filler, and the halogen-free flame-retardant surface layer comprises PE plastic, modified polypropylene fibers, an ethylene-methacrylic acid copolymer, hypophosphite, zinc borate, an interface modifier, a light stabilizer, an antioxidant and other auxiliaries. The halogen-free flame-retardant wood-plastic co-extrusion composite material disclosed by the invention isvery simple to prepare, the core layer granules and the halogen-free flame-retardant surface layer granules are firstly prepared respectively, and then co-extrusion molding is carried out. The halogen-free flame-retardant wood-plastic co-extrusion composite material has the advantages of excellent flame retardancy, high strength, excellent impact resistance, high hardness, favorable wear resistance, low water absorptivity, favorable aging resistance, favorable wear resistance, favorable scratch resistance, high wood texture and favorable antiskid effect, and is not easy to fade or mildew whenbeing used outdoors.

The invention discloses a hard phenolic foam composition, a sprayed hard phenolic foam coating, a preparation process and an application. The rigid phenolic foam composition is obtained by mixing composite phenolic resin and mixed acid in a mass ratio of 1-10:1. The above-mentioned hard phenolic foam composition is completely atomized and mixed uniformly at a pressure of 100-200kg and a temperature of 20-50°C, sprayed from a spray gun, and evenly sprayed on the wall to form a spray-coated hard phenolic foam Insulation. The obtained spraying hard phenolic foam coating can be applied to the field of waterproof, fireproof or thermal insulation materials.

The invention provides a corrosion-resistant and antistatic coating material and a preparation method thereof. The corrosion-resistant and antistatic coating material is prepared from the following raw materials in parts by weight: 20-50 parts of epoxy modified acrylate, 10-20 parts of polyaniline, 11-18 parts of polycarbonate, 8-15 parts of acrylonitrile-butadiene-styrene copolymer, 7-15 parts ofpolyethylene glycol terephthalate, 6-12 parts of carbon nanotube, 4-8 parts of silane coupling agent, 3-6 parts of hexadecyl trimethyl ammonium bromide, 2-5 parts of polyethylene glycol octylphenol ether, 3-7 parts of acryloxyethyl trimethylammonium chloride, 2-5 parts of polyepoxysuccinic acid, 5-10 parts of corrosion-resistant and antistatic pigment, 1-2 parts of coalescent, 1-3 parts of leveling agent and 0.5-2 parts of defoaming agent. The coating material prepared by using the preparation method has good mechanical strength, corrosion resistance and weather resistance, and the surface resistivity is not higher than 8.48*105ohm and conforms to the standard of the coating material, so that the corrosion-resistant and antistatic coating material has a wide application prospect in corrosion-resistant and antistatic materials.

The invention relates to the technical field of plastic pipes, and particularly provides a high-barrier material which at least comprises the following raw materials in parts by weight: 80-120 parts of polyolefin resin, 5-30 parts of inorganic filler and 0.1-5 parts of silane coupling agent, wherein the polyolefin resin comprises at least one of an ethylene-vinyl alcohol copolymer, HDPE, PP, PET and PC. The high-barrie material is mainly used for products with barrier property requirements on oxygen molecules, and the material can remarkably reduce the oxygen barrier property of humidity and the stability of pipe strength.