298results about How to "Strong acid and alkali corrosion resistance" patented technology

The invention provides a composite plate material of foam microcrystalline glass and pure microcrystalline glass. The composite plate material comprises a base body and a decoration surface, wherein the base body is made of a foam microcrystalline glass mixed material; the thickness of the base body is 50mm to 500mm; the decoration surface covers the surface of the base body and is made of pure microcrystalline glass granules; the thickness of the decoration surface is 3mm to 30mm. The invention also provides a manufacturing method of the composite plate material. The composite plate material of the foam microcrystalline glass and the pure microcrystalline glass, provided by the invention, can simultaneously replace a building material and a decoration material, and is small in specific gravity, high in strength, fireproof and corrosion-resistant; environment products which are difficultly handled in a natural environment and industrial wastes which are difficultly treated currently can be consumed; the environment stress is reduced.

The invention discloses a conductive adhesive for conducting the plug hole of a circuit board, comprising the following components in ratio by weight: 5-29% of (A) high-temperature-resistant resin, at least 70-5% of (B) tin or tin alloy conductive particles, and the balance of (C) other metallic or non-metallic conductive particles. The invention further discloses a double-sided multi-layer printed circuit board produced by the conductive adhesive and a method for producing the circuit board, wherein the method comprises the following steps of: pre-pressing the copper foil of one side on any one side of an insulating base material at a low temperature to form a single-sided copper-coated base material; machining a conducting hole, compounding the copper foil of the other side on the other side of the insulating base material to form the conducting hole; printing the conductive adhesive containing 5-29% by volume of high-temperature-resistant resin, 70-5% of tin or tin alloy particles, and conductive particles in a groove and then curing, so as to electrically connect the copper foils of the both sides; and machining circuits on the both sides of the double-sided circuit board. The conductive adhesive for conducting the plug hole of a circuit board disclosed by the invention has the advantages of being less in cost, good in adsorbability, wide in application range, good in quality guarantee coefficient, and convenient in operation.

The invention relates to a self-lubricated abrasion-proof lumpy molding compound. The premix of the molding compound contains an unsaturated polyester resin in an amount of 60 to 80 parts by mass; a low shrink additive in an amount of 20 to 40 parts by mass; an internal molding lubricant in an amount of 3 to 5 parts by mass; an inorganic filler in an amount of 140 parts to 170 parts by mass; an initiator in an amount of 0.5 to 2 parts by mass; a thickening agent in an amount of 0.5 to 1.5 parts by mass; a lubricant in an amount of 10 to 40 parts by mass; a reinforcing material in an amount of 83.5 to 188 parts by mass. The total number of the parts of the unsaturated polyester resin and the low shrink additive is 100. The self-lubricated abrasion-proof lumpy molding compound has excellent mechanical property and acid and alkali corrosion resistance, and is light in weight so as to save fuel and discharge little pollution. The invention is designed freely; the components are integral; the dimensional stability is excellent; the surface is smooth; the components can be self-lubricated without needing other lubricants for reducing friction; the molding compound can be used for molding once; and molded products have accurate sizes and good surfaces, thus avoiding machining, heat treatment and surface modification of metal abraded parts; in addition, the production cycle is short.

The invention provides polymer emulsion architectural waterproof coating modified by emulsified asphalt. The polymer emulsion architectural waterproof coating is characterized by being prepared from the following raw materials in parts by weight: 20 to 45 parts of polymer emulsion, 0.2 to 0.5 part of dispersing agent, 0.2 to 0.5 part of emulsifying agent, 0.3 to 0.6 part of defoaming agent, 0.2 to 0.4 part of sterilizing agent, 10 to 35 parts of the emulsified asphalt, 30 to 52 parts of powdery fillers and 7 to 15 parts of water. The polymer emulsion architectural waterproof coating disclosed by the invention has the advantages of good mechanical performance, good weather resistance, strong waterproof ability and acid-base corrosion resistance.

The invention relates an approach to produce artificial pumice. It is burned by nether materials: inorganic material, sodium hydroxide, borax, Paris white, carbon dust and isinglass. Thereinto, inorganic material is selected from minerals or clay. It follows nether steps: mixing above materials in terms of given ratio, cracking blending to 60-200 items and loading into a module to bake.

The invention relates to a grounding electrode in a lightning protection grounding system of a power station, a transformer grounding network, a high-voltage power transmission line iron tower, an electrified railway grounding system, a wireless communication transmitting tower, a transformer neutral point, a high-rise building, a large computer and a microelectronic equipment system equipment center. The grounding electrode comprises a grounding electrode main body which is a thick-walled and seamless steel tube; the thickness of the wall of the steel tube is more than 8-10mm, the inner wall and the outer wall thereof are provided with an anti-corrosion conducting film, the lower end thereof is provided with a sealing head, the top end thereof is provided with an openable packing port, and the wall thereof is provided with a releasing hole; and the steel tube is externally provided with an external packing with good electric conduction, corrosion prevention and water permeability, and an interface connected with the grounding network and an equipment grounding lead. The grounding electrode has convenient and fast installation and construction, good resistance-reducing effect and convenient maintenance with the service life thereof of being not lower than that of the grounding equipment, and is a grounding electrode which not only meets the anti-corrosion function of the grounding electrode in the grounding network, but also reduces the grounding resistance performance of the grounding electrode.

The invention discloses a high-weatherability chlorinated polyethylene power cord sheath material and a preparation method thereof. The high-weatherability chlorinated polyethylene power cord sheath material is prepared from the following substances in parts by weight: 70-90 parts of chlorosulfonated polyethylene rubber, 20-30 parts of ethylene-propylene-diene monomer rubber, 10-15 parts of SEBS (styrene-ethylene/butylene-styrene), 3-5 parts of high-activity magnesium oxide, 2-4 parts of microcrystalline wax, 15-20 parts of talcum powder, 20-30 parts of carbon black N550, 5-10 parts of black bacon rubber, 2-3 parts of triallyl isocyanurate, 0.5-1 part of 1, 3-bis(t-butylperoxy isopropyl) benzene, 10-15 parts of trioctyl trimellitate, 8-12 parts of dioctyl phthalate, 1-2 parts of antioxidant 168 and the like. The sheath material disclosed by the invention has excellent weatherability and anti-aging property, can be used in an environment with the temperature from -50 DEG C to 105 DEG C for a long time without deforming or cracking, has excellent electrical insulation, tensile strength, oil resistance, resistance to acid and alkali corrosion, environmental friendliness, and flame retardancy, is durable, safe and reliable, and has a broad market prospects.

The invention relates to a lavender grey glaze. After raw materials of the lavender grey glaze are proportioned according to the prescription, the ball milling, sieving and de-ironing procedures are carried out to obtain slurry. The raw material comprises dehydrated and dried powder. By introducing talc, chromic oxide and the like into the raw materials, the invention solves the problems of easy burnt blistering and smoke absorption in the high-temperature roasting process of the traditional lavender grey glaze ceramic. The glaze surface is green, smooth, fine and beautiful, the color is pure, and the ceramic is clean and similar to jade. The invention also discloses a method for manufacturing the ceramic products by using lavender grey glaze, and the lavender grey glaze ceramic finished product manufactured by the method has the advantages of high yield rate, good density and strong acid and alkaline corrosion resistance property.

The invention discloses a preparation method of a lotus-like super-hydrophobic self-cleaning surface. The method comprises the following steps: (1) electroplating a layer of porous metal film on the surface of a metal sheet by adopting a hydrogen bubble template method; (2) putting the prepared porous metal film into an electric heating furnace for oxidizing to obtain a porous metal oxide template; (3) proportionally mixing a high polymer curing system, adding normal hexane, pouring into the porous metal oxide template for curing, and removing the template after curing to obtain the lotus-like super-hydrophobic self-cleaning surface. The method has the advantages of easiness, convenience, environmental friendliness, no need of large-sized instruments, controllability of experimental parameters and low cost, and can be used for manufacturing a lotus-like micromorphology surface. A micro-protruding structure has the characteristics of super hydrophobicity, self-cleaning capability, high mechanical stability, high acid-base resistance and good application prospect, and can be industrialized.

The composition of biphase stainless steel is formed from (wt%) 0.01-0.12% of C, 4.0-8.0 % of Mn, 12.0-25.0% of Cr, 0.20-1.5% of Al, 0.5-3.0% of Ni, 0.4-3.0% of Mo, Cu is greater than or equal to 1.0%, 0.2-2.5% of Si, 0.05-0.3% of N, 0.02-0.05% of Re, S is greater than of equal to 0.03%, P is greater than or equal to 0.035% and the rest is Fe. Said biphase stainless steel can resist alkali corrosion, resist acid corrosion, specially it can resist stress corrosion cracking under the condition of resisting chlorine ion and in oxidative acid medium, can resist seam currosion and resist cavity corrosion, and its strength is high and toughness is good, etc.

The invention discloses water-based fluoride varnish. The water-based fluoride varnish comprises components as follows: water-based fluoride epoxy resin, zinc powder, water and additives, wherein the water-based fluoride epoxy resin comprises components as follows: bisphenol AF, epichlorohydrin, polyethylene glycol bisglycidyl ether, ethylene glycol amine and acrylic acid; the additives comprise components as follows: a dispersing agent, a curing agent, a thickening agent, a coalescing agent, a PH modifier, a silane coupling agent and a flatting agent. The invention further designs a preparation method of the water-based fluoride varnish. The method comprises steps as follows: dissolving the dispersing agent in the additives in water, then stirring the water-based fluoride epoxy resin and the rest components in the additives, then adding the zinc powder to obtain a pre-mixture, and adding a dispersing agent aqueous solution into the pre-mixture to prepare the water-based fluoride varnish. The water-based fluoride varnish has the excellent weather resistance and the acid and alkali corrosion resistance, the low friction property, the stain resistance and the ultraviolet-resistant ageing resistance, the preparation method is simple and easy to implement, and the preparation cost is low.

The invention discloses an intravascular photoacoustic/ultrasonic imaging endoscopy probe of efficient collimation optical excitation. The endoscopy probe comprises a C-Lens, a concave reflecting mirror, an ultrasonic transducer, optical fiber, a probe case and a torque coil; the C-Lens is used for collimating a pulse laser transmitted by the optical fiber. The concave reflecting mirror is used for optimizing the collimated pulse laser and reflecting the collimated pulse laser to a sample to excite an ultrasonic signal. The ultrasonic signal is converted into an electrical signal through the ultrasonic transducer and transmitted to an acquisition system through a coaxial line. The ultrasonic transducer can also independently complete ultrasonic imaging by sending or receiving. According to the intravascular photoacoustic/ultrasonic imaging endoscopy probe of the efficient collimation optical excitation, the C-Lens and the concave reflecting mirror are in use cooperatively, therefore, the pulse laser can be effectively collimated, so that the problem is addressed that lasers focus on one point, the probe deviates from the vascular center, and accordingly image distortion exists and the vascular endoscopy imaging quality is improved.

The invention discloses fabric stiffening adhesive paste, a preparation method thereof and forming cloth. The fabric stiffening adhesive paste comprises the following raw materials: vinyl acetate, organosilicone monomers containing unsaturated double bonds, butyl acrylate, polyvinyl alcohol, a silane coupling agent, a sodium salt chelating agent, a defoaming agent, deionized water, an initiator and a preservative. The finished fabric stiffening adhesive paste does not contain hazardous substances such as formaldehyde, heavy metal and the like, is free of toxicity and off-odor, is safe and reliable, has very strong adhesive force to multiple chemical fabrics, and is applicable to cotton cloth, chemical fabrics, linen, wool fabrics, silk and blended fabrics; the glossiness, hardness and hand feeling are improved without changing colored light of cloth, and the processed cloth does not easily absorb moisture and ease back and has storability.

The present invention relates to a superfine hard alloy and its production method. Said alloy is a composite alloy formed from main component WC hard phase, Co-Al adhesive metal phase and rare earth metal element phase. The composition of said alloy includes (wt%) 10-15% of Co-Al, in which Al is 13-20% and Co is 80-87%, 1-3% of Re and 82-89% of WC. Its production method includes the following steps: firstly, high-energy ball grinding to obtain adhesive alloy Co-Al, preparing raw materials according to the defined mixed ratio, forcedly ball grinding, vacuum sintering at 1360 deg.C and heat-insulating for 20 min, finally obtaining said invented superfine hard alloy.

The invention relates to a two phase stainless steel, which comprises the following chemical components in weight percent: 0 to 0.12 percent of C, 4.0 to 8.0 percent of Mn, 12.0 to 25.0 percent of Cr, 0.20 to 1.5 percent of Al, 0.5 to 3.0 percent of Ni, 0.4 to 3.0 percent of Mo, 0 to 1.0 percent of Cu, 0.2 to 2.5 percent of Si, 0.05 to 0.3 percent of N, 0.02 to 0.05 percent of Re, less than or equal to 0.03 percent of S, less than or equal to 0.035 percent of P, and the balance being Fe. The two phase stainless steel has the advantages of high strength, good toughness, excellent wear resistance and corrosion resistance, in particular the superiorities of stress corrosion cracking resistance, complete corrosion resistance, intergranular corrosion resistance, and pitting corrosion resistance and vacuole corrosion resistance in sea water in solutions such as strong base (such as NaOH), chlor-alkali (NH4Cl), oxidizing acid (such as HNO3), sodium thiocyanate, phosphate solution, good hot and cold processability, and low cost.

The invention discloses a method for preparing a single-layer diamond abrasive tool through chemical vapor deposition. According to a silicon carbide base body, a diamond abrasive material is mixed into a photoresist solution and is subject to ultrasonic vibration, rotating whirl coating is used for evenly dispersing diamond abrasive particles, uniform distribution of the particles on a base body substrate can be achieved, the CVD method is adopted to enable the diamond coating bonding agent to be subject to deposition between the diamond abrasive particles and the silicon carbide base body, the abrasive material and the base body are firmly connected together, and meanwhile, the abrasive particles grow to become high-grade cubic octahedral single-crystal particles. The prepared single-layer diamond abrasive tool is high in abrasive particle holding force, the exposure height is large, the chipping containing space is large, defects of electroplating and brazing single-layer diamond abrasive tools are overcome, and the method is suitable for preparing fine granularity (five micrometers to 100 micrometers) single-layer diamond abrasive tools. The prepared single-layer diamond abrasive tool has the wide application prospect in high-precise grinding fields of crisp and hard materials of semiconductors, optical crystals, artificial sapphire, glass and the like

The invention discloses a high-flexibility insulating sheath material for a transformer and a preparation method thereof. The high-flexibility insulating sheath material is prepared from 50-70 weight parts of acrylate rubber, 30-40 weight parts of polyurethane rubber, 15-20 weight parts of nylon 66, 10-15 weight parts of di(2-ethylhexyl)-4,5-epoxycyclohexane-1,2-dicarboxylate, 8-12 weight parts of nylon acid dioctyl ester, 5-10 weight parts of chlorinated paraffin, 10-15 weight parts of aluminum hydroxide, 5-10 weight parts of zinc borate, 15-25 weight parts of carbon black N660, 8-12 weight parts of magnesium carbonate, 5-10 weight parts of quartz powder, 10-15 weight parts of nanometer fluorite powder, 4-8 weight parts of mineral oil, 2-3 weight parts of zinc oxide, 1-2 weight parts of calcium stearate, 1-2 weight parts of barium stearate, 1-2 weight parts of an antiager ODA, 2-3 weight parts of an antiager DNP, 1-2 weight parts of a promoter NA-22, 1-2 weight parts of a promoter CZ, and 3-6 weight parts of a composite filling material. The high-flexibility insulating sheath material has good flexibility, high toughness and good stretching and aging resistance, can resist long-term bending motion, has excellent tension resistance, and has excellent performances such as heat resistance, weather resistance, acid and alkali corrosion resistance, electrical insulating property and tear strength.

The invention discloses a transparent energy-saving lyophobic film used for civil aircraft porthole glass and a preparation method thereof. An organic glass substrate involved in the transparent energy-saving hydrophobic film used for the civil aircraft porthole glass comprises a surface A and a surface B. Different transparent film bodies are arranged on the surface A and the surface B. A transparent energy-saving conductive film system is arranged on the surface A, and a transparent hydrophobic film system is arranged on the surface B. The energy-saving film system comprises an isolation layer, an energy-saving functional layer and a protective layer sequentially from inside to outside in the organic glass substrate. The hydrophobic film system comprises an attaching layer and a hydrophobic functional layer sequentially from inside to outside in the organic glass substrate. The inner side of the transparent energy-saving hydrophobic film can achieve the infrared reflecting and energy saving function, the outer side of the transparent energy-saving hydrophobic film can achieve the hydrophobic, oleophobic and anti-dirt functions, the film layers on the two sides are coordinated in function, the effects of high light transparency and excellent energy conservation are achieved, the film layers are high in corrosion resistance and weather resistance, the production process is simple and can be autonomously controlled, and the technological process can be adjusted according to performance parameter requirements.

The invention discloses a preparation method for a polycarbonate composite for producing vehicle lamp housings. The method comprises the steps of preparation of a polycarbonate composite A, preparation of a polycarbonate composite B, preparation of a modifier and preparation of a polycarbonate composite finished product. The polycarbonate composite prepared with the method disclosed by the invention is excellent in comprehensive performance, not only has higher tensile strength, bending strength and notch impact strength, but also has excellent temperature resistance, flame retardance, abrasive resistance, fatigue resistance, weather resistance, aging resistance, acid-alkali corrosion resistance and the like, has long service life, can be widely applied to the vehicle lamp housings, and has wide market prospect.

The invention discloses a portable box for storing a fixing agent and relates to the technical field of fixing agent storage. The portable box comprises a lockable box body and a box cover. A handle is mounted on the box cover, the inner part of the box body is a cavity, round magnetic plates are uniformly mounted in a spaced manner on a bottom plate in the box body, reagent bottle locking seats are mounted on the periphery of the round magnetic plates, a supporting table is mounted in a position, 4-5 cm, far away from the bottom plate, on the inner wall of the box body, an acid and alkali-resistant rubber blanket is mounted on the supporting table, a rubber gasket corresponding to the cavity of the box body is arranged on the inner side of the box cover, a magnetic plate integrally formedwith a reagent bottle is arranged at the bottom of the reagent bottle, and a recognizing identifier is attached to the reagent bottle body. The portable box is small in structure and convenient to carry, the fixing agent reagent bottle is mounted inside conveniently, and the fixing agent is effectively prevented from being swung and scattered in transferring and using processes, and meanwhile, the portable box is relatively high in acid and alkali resistance, is relatively low in cost, long in service life and suitable for being popularized and applied.

The invention relates to a dual-sealing flange, which comprises a night-side flange and a sunny-side flange. A groove is formed in the center of one end face of the night-side flange. A lug boss matched with the groove is formed in the center of one end face of the sunny-side flange. The flange also comprises a graphite spiral wound gasket arranged in the groove and a C-shaped metal sealing ring. A trough for accommodating the C-shaped metal sealing ring is reserved around the groove in the end face of the night-side flange. An air inlet through hole and an air outlet through hole are also symmetrically reserved between the groove and the trough in the end face of the night-side flange, and are communicated with the groove through a protective air channel respectively. The dual-sealing flange can run stably and safely in an ultrahigh-temperature highly-corrosive environment, has a good sealing effect, and has the advantage of convenience for assembly and disassembly, a good using condition is created for a sealing part, and the service life of the sealing part is prolonged.