60results about How to "Strong chemical inertness" patented technology

The invention discloses a weather-proof reflecting coating material used for road labels. The weather-proof reflecting coating material used for road labels comprises, by weight, 7 to 9 parts of an energy-storage self luminescent material, 4 to 6 parts of a nanometer grade reflecting powder, 5 to 7 parts of a reflecting material, 20 to 30 parts of a highlight transparent polyurethane emulsion, 10 to 14 parts of water-borne alkyd resin, 2 to 4 parts of an aluminate coupling agent, 8 to 10 parts of a processing auxiliary agent, 4 to 6 parts of an ore additive powder material, 5 to 7 parts of anti-cracking fiber, and 3 to 7 parts of polyethylene wax. The weather-proof reflecting coating material possesses excellent energy storage self luminescent and reflective functions, so that road labels are provided with excellent reflective identification properties at dark and light conditions, light intensity is high, and fluorescent lifetime; the adhesive force is relatively high; high temperature resistance is excellent; corrosion and moisture resistance is achieved; the material cost of the preparation method is relatively low; the raw materials are easily available; the preparation method is simple; and high practical value and promising application prospect are achieved.

The invention discloses a microporous high-penetration-resistance high-aluminum casting material, and a preparation method and an application method thereof. The casting material is prepared from the following components in parts by weight: 51-95 parts of aggregate, 23.5-41.5 parts of powder, 3-6 parts of composite dewetting agent and 0.02-0.4 part of composite water reducing agent, wherein the aggregate is superfine bauxite chamotte; and the powder contains 180-mesh superfine bauxite fine powder, 800-mesh superfine bauxite fine powder, CA-70 cement, alpha-Al2O3 micro powder and SiO2 micro powder. A lining cast by the microporous high-penetration-resistance high-aluminum casting material provided by the invention is low in porosity, small in pore size of air pores and high in resistance to aluminum alloy liquid-state or vapor-state element penetration and corrosion; the aluminum alloy melt penetration resistance is improved; the mechanical strength is high, the high-temperature volume is stable, and the thermal shock resistance is favorable; and nodulation and bulge phenomena at the three-phase juncture can be effectively avoided.

The invention discloses a stainless steel extraction stirring rod and a preparation method thereof, and belongs to the field of analytical chemistry. The preparation method is as follows: dipping a stainless steel rod into an oxidized dopamine alkaline solution, washing, drying to prepare a poly dopamine modified stainless steel rod; dipping the poly dopamine modified stainless steel rod into a graphene oxide solution, sealing, heating for reacting, drying to obtain the stainless steel extraction stirring rod. The stainless steel extraction stirring rod is successively repeatedly dipped into the oxidized dopamine alkaline solution and the graphene oxide solution, and then a multilayer graphene modified stainless steel extraction stirring rod can be prepped. The preparation method is simple without adding of pollutional reducing agents, the coating stability is strong, and the thickness can be controllable. The stainless steel extraction stirring rod prepared by the method has very good enrichment effect on polycyclic aromatic hydrocarbons and other compounds, can be combinedly used with liquid chromatography, and is suitable for enrichment and analysis of the polycyclic aromatic hydrocarbons in the environment, food and other fields.

The invention relates to a fluorocarbon film rubber plug and a preparation method thereof. The fluorocarbon film rubber plug comprises a rubber plug body, part or all of the surface of the rubber plug body is covered with a fluorocarbon polymer film, and the rubber plug body and the fluorocarbon polymer film are physically and/or chemically bonded and integrated into a whole without any adhesive between of both. The fluorocarbon polymer film is obtained by being deposited on the surface of an ordinary rubber plug by adopting a method of plasma chemical vapor deposition of reaction gas glow discharge. By strongly combining the ordinary rubber plug with the fluorocarbon polymer film with the advantages of high hydrophobicity, strong chemical inertness, uniform and compact structure and precise and controllable film thickness, the invention not only can obviously improve compatibility with contacted medicines, but also can effectively avoid the adhesion phenomenon of the rubber plug and easily remove surface contamination and preserve the original elasticity and tightness of the rubber plug in order to significantly improve product quality of the ordinary rubber plug and further expand application scope of the ordinary rubber plug.

The invention discloses indoor antibacterial and environment-friendly powder paint for removing formaldehyde, and the indoor antibacterial and environment-friendly powder paint comprises the following components by weight: 0.03-0.05% of nano silver, 0.3-1% of chitosan, 5-10% of pure diatom, 5-10% of anatase titanium dioxide, 30-45% of heavy calcium carbonate, 25-35% of light calcium carbonate, 15-25% of barium sulfate and balance of an assistant. The raw materials adopted by the indoor antibacterial and environment-friendly powder paint are environmentally-friendly non-toxic and pollution-free, the indoor antibacterial and environment-friendly powder paint is effectively antibacterial and durable in antibacterial effect, can automatically absorb the formaldehyde and other toxic and harmful gases in indoor air, has long lasting purification effect, may not cause secondary pollution, has the advantages of simple preparation and convenient packaging and storage, and is suitable for indoor decoration of all kinds of buildings.

The invention relates to a preparation method of a wear-resistant corrosion-resistant coating, which comprises the following steps: (1) preparing the following raw materials in percentage by weight: 50-60% of resin, 23-40% of filler, 1-3% of leveling agent, 4-6% of curing agent, 2-3% of coupling agent and 3-5% of modifier; and (2) putting all the raw materials in the step (1) into an ultrafine powder ball mill, mixing and grinding until the particle size is 1200 meshes or above, thereby obtaining the wear-resistant and corrosion-resistant coating. According to the technical scheme, the carbonnano tubes selectively used in the coating have the characteristics of wear resistance, corrosion resistance, good stability and the like, the nano microlite has the characteristics of permeation resistance, good wear resistance and the like, and the nano sepiolite powder has the advantages of high adsorbability, high flame retardance, high temperature resistance, good wear resistance and the like; the carbon nanofibers have the advantages of wear resistance, corrosion resistance, high surface gloss and the like, and the nano ceramic powder has the advantages of wear resistance, high temperature resistance, corrosion resistance and the like.

The invention relates to a synthetic rubber seal ring material and a preparation method thereof. The synthetic rubber seal ring material is mainly prepared from components in parts by weight as follows: 10-100 parts of fluorelastomer, 10-100 parts of 3F fluorelastomer, 0.1-100 parts of bisphenol AF, 0.1-5 parts of a vulcanizing agent, 0.1-5 parts of an accelerant BPP, 3-130 parts of inorganic filler, 1-100 parts of calcined diatomite, 1-30 parts of tetrafluoro micropowder, 0.1-5 parts of a polymer processing aid, 0.1-5 parts of American palm wax, 1.1-50 parts of a rubber pigment coloring agentand 0.1-10 parts of fluororubber polymers. The preparation method comprises steps as follows: components are weighted in proportion; fluorelastomer, 3F fluorelastomer and fluororubber polymers are premixed; the mixture and the remaining components are added to an internal mixer for mixing, the mixture is left to stand for hours, the internal mixer is opened to discharge sheets; heating and vulcanization molding are performed, still standing is performed for hours after molding, and a product is obtained. The synthetic rubber seal ring material has high chemical inertness, good stability, superhigh wear resistance, acid-base resistance and corrosion resistance, tear resistance and the like; the synthetic rubber seal ring material can resist the temperature of 220 DEG C, which is far higherthan that of ordinary rubber seal rings; the average service life is 4 times or longer that of the ordinary rubber seal rings.

The invention relates to a preparation method of an aluminum phosphate clad carbonyl iron anti-oxidation wave-absorbing material, which solves the problems that the activity among carbonyl iron metal particles is high, and carbonyl iron metal particles and oxygen in the air easily have oxidation reaction. The preparation method comprises the following steps: (1) preparing a precursor carbonyl iron suspension; (2) preparing a phosphate suspension; (3) pouring the phosphate suspension into the precursor carbonyl iron suspension, mixing and reacting and cleaning and separating; and (4) performing high-temperature calcination on a sample under the inert atmosphere condition to obtain an aluminum phosphate clad carbonyl iron (Fe@AlPO4) composite material. The obtained composite material can well keep the basic skeleton and crystal form of the precursor carbonyl iron, the oxidization reaction of internal material iron with oxygen in the air can be delayed under the condition of certain temperature air, and the thermal stability of the carbonyl iron composite material can be enhanced. The electromagnetic parameters of the composite material can be regulated by modification of phosphate, the impedance of the composite material is beneficially better matched, and the wave absorbing performance of the composite material can be improved; in addition, the composite material can still keep better wave absorbing performance after being subjected to thermal treatment in the air for 24h and 48h.

The invention provides a vertically arranged boron nitride nanosheet polymer composite material heat-conducting sheet and a preparation method thereof. A composite material takes a boron nitride nanosheet with a sheet structure as a filler, the filler is added into a polymer matrix, and a horizontally arranged boron nitride nanosheet polymer composite film is formed through stirring and casting processes, and stacking, hot-pressing fusion and yarn cutting processes are performed on the boron nitride nanosheet polymer composite film to prepare the vertically arranged boron nitride nanosheet polymer composite material heat-conducting sheet. Boron nitride nanosheets are vertically arranged in the polymer matrix, so that the interface thermal resistance is reduced, the heat conductivity coefficient of the material is improved, the composite material heat-conducting sheet with the thickness of 0.05-0.40 mm can be obtained through the yarn cutting process, the thermal resistance is smaller, and heat transfer is facilitated. The method is simple, reliable and high in operability, and can be applied to preparation of polymer composite materials of boron nitride nanosheets and various systems. The boron nitride nanosheet composite material heat-conducting sheet prepared by the method provided by the invention can be widely applied to heat management of electronic products.

The invention provides chemical-medium-resistant fluorosilicone lubricating grease and a preparation method thereof. The fluorine-silicon lubricating grease comprises the following components in percentage by weight: 60-80wt% of composite fluorine-containing base oil; 10-35 wt% of a thickening agent; and 1-15 wt% of a high temperature performance improver; wherein the composite base oil comprisesfluorosilicone oil and linear perfluoropolyether oil. The fluorosilicone lubricating grease provided by the invention has excellent chemical medium resistance and high temperature resistance, can be used under extremely harsh working conditions such as 220 DEG C or above and strong chemical active media, and can effectively reduce friction and protect normal operation of equipment, so that the service life of the equipment is prolonged.

The invention discloses a soft floating roof method for reducing evaporation of a liquid fuel storage tank through a hollow plastic product. The hollow plastic product is prepared from nylon 6, nylon 66 and PEEK (polyether-ether-ketone) or PI (polyimide) as substrate materials (master batch) as well as a flame retardant and a static electricity conductive agent with an injection welding process or a hollow blow molding process. The hollow plastic product adopts hollow spheres with the diameter ranging from phi 10 mm to phi 200 mm and the wall thickness ranging from 0.5 mm to 5 mm, and the surfaces are not coated. The soft floating roof method is applicable to storage tanks in various shapes, can realize mechanical filling and solves the problems of high fabrication cost, high maintenance cost, limited lifting and dropping speeds, high probability of subsiding accidents of a chuck and a floating tray, limited lowest dropping height and the like of traditional floating roofs; and the hollow plastic product floating on the liquid level in the storage tank is flame-retardant, high-temperature resistant, high in chemical inertness and long in service life, can be mechanically recovered, has no adverse effect on the structure of the storage tank and does not affect normal maintenance of the storage tank.

The invention discloses a nylon composite material excellent in waterproofing and wear-resisting properties. The composite material is characterized by being prepared from the following raw materials in parts by weight: 0.1-0.3 part of diphenylamine, 5-7 parts of precipitated barium sulfate, 8-12 parts of graphite fiber, 0.5-1 part of polyethylene wax, 2-4 parts of nano aluminum nitride, 1-2 parts of sodium lignin sulfonate, 90-100 parts of nylon 6, 2.5-3.2 parts of lithium chloride, 3-9 parts of epoxy resin E51, 10-15 parts of an EVA emulsion, 60-80 parts of ethyl acetate, 1-3 parts of castor oil, 4-7 parts of ethylene/vinyl alcohol copolymer powder and 15-30 parts of distilled water. By adding the graphite fiber, the wear resistance, the toughness, the rigidity and other properties of the material are enhanced; the added precipitated barium sulfate has the advantages of strong chemical inertness, good stability, acid and base resistance, and moderate hardness, and is able to absorb harmful rays an the like; by adding the nano aluminum nitride, the mechanical performance and heat-conducting effect of a finished product are significantly improved; and the material disclosed by the invention is excellent in waterproofing and heat-conducting effects, simple in processing and worthy of popularizing.

A plastic packing box relates to the field of packing box processing and manufacturing technologies and is characterized by being prepared from the following materials (by weight): 16-21 parts of polyvinyl chloride, 2-5 parts of modified kaolin powder, 2-4 parts of myrcene, 2-5 parts of a coupling agent, 3-5 parts of alkyl sodium sulfonate, 1-4 parts of white carbon black, 1-2 parts of aluminium powder, 4-8 parts of talcum powder, 2-3 parts of distearoyl isopropoxy aluminate, 3-6 parts of an anti-ageing agent, 6-10 parts of an auxiliary agent and 14-18 parts of clear water. The method of the invention is reasonable and is convenient to operate; and the product is nontoxic and harmless.

The invention belongs to the technical field of photoelectricity, and provides a white light diode and a manufacturing method thereof. The white light diode comprises a light-emitting chip and porous glass which is encapsulated on the light-emitting surface of the light-emitting chip and contains an organic fluorescent material. As for the white light-emitting dioxide in the invention, the porous glass is used as a carrier for the organic fluorescent material to encapsulate so as to manufacture the white light-emitting diode, and as the porous glass has strong chemical inertness, the photochemical reaction between the organic fluorescent material and the porous glass as well as nonradiative energy transfer due to the photochemical reaction are prevented, thus maintaining higher luminous efficiency for the organic fluorescent material, improving the whole stability and prolonging the service life of the white light-emitting diode.

The invention discloses an agricultural machine environment-friendly anti-rust coating which includes, by weight, 40-50 parts of acrylic resin, 3-5 parts of antimonous oxide, 8-10 parts of polyethylene glycol, 7-9 parts of a composite filler, 6-10 parts of a processing aid, 0.4-0.8 parts of polydimethylsiloxane, 0.6-0.8 parts of SiO2, 5-9 parts of a sodium salt additive, 6-10 parts of a composite synergist, 4-6 parts of EDTA, 3-7 parts of glycerol and 15-25 parts of deionized water. The anti-rust coating has strong adhesive force on metal products and has excellent anti-rust protective effect on the metal products, can be used repeatedly, is free of discharge of waste liquid and acid fog which causes environment pollution, is free of burning skin during use, is irritation-free and damage-free on human body and is easy to use. The raw materials are low in cost and easy to obtain. The preparation method has simple processes, high practical value and excellent application prospect.

The invention provides a method for grinding a superhard material. The rotating speed of a grinding apparatus is controlled, the back cutting depth of the grinding apparatus is adjusted, the speed and axial feeding speed of a workpiece are controlled, and the grinding speed ranges from 15m/s to 25 m/s; the back cutting depth ranges from 0.005 mm to 0.01 mm; the speed of the workpiece ranges from 15 m/min to 25 m/min; and the axial feeding speed ranges from 0.5 m/min to 1 m/min. The good surface roughness can be obtained through the grinding speed ranging from 15 m/s to 25 m/s, and meanwhile, the temperature of the workpiece and the temperature of a grinding wheel are low, so that the abrasion of the grinding wheel can be controlled within the small range; the back cutting depth ranging from 0.005 mm to 0.01 mm balances the grinding quality of the workpiece and protection of the grinding wheel; when the workpiece is ground at the speed ranging from 15 m/min to 25 m/min, a steady grinding process is achieved, and the noise is low; and the axial feeding speed ranging from 0.5 m/min to 1 m/min enables the surface roughness of the workpiece to be good, and the abrasion of the grinding wheel is good.