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 provides enamel, which comprises a substrate and a ceramic glaze layer enamel-fired on the substrate, wherein the ceramic glaze layer is prepared by firing ceramic glaze powder which contains 60 and 90 weight percent of glass frit, 5 to 18 weight percent of crushed sand, 3 to 12 weight percent of clay, 0.3 to 5 weight percent of borax and 0.3 to 5 weight percent of soda ash. The enamel has excellent physiochemical performance such as low sintering temperature, corrosion resistance and the like. The method for preparing the enamel has the advantages of obtaining an enamel coating with high bonding strength and acid and alkali corrosion resistance at lower sintering temperature, solving the problem of substrate deformation, saving energy, and reducing production cost.

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 discloses a double-cutter cotton-escape preventing fiber cutting machine. The double-cutter cotton-escape preventing fiber cutting machine comprises a feed inlet cutter set (4) and a rolling cutter set (5), the feed inlet cutter set (4) is arranged below a feed inlet (201), the feed inlet cutter set (4) is driven by a first motor through a transmission mechanism, the rolling cutter set (5) is driven by a second motor through the transmission mechanism, a plurality of stirring racks are fixedly arranged on the rolling cutter set (5), a plurality of bottom stirring rods (7) are arranged at the bottom end of the rolling cutter set (5), the bottom surfaces of the bottom stirring rods (7) contact with the bottom surface of a box body (2), a cotton stop brush (203) is arranged at the position of the feed inlet (201), and a humidifier (204) is arranged on the box body (2); the box body (2) is connected with an earth lead (9). Cotton fibers can be effectively prevented from escaping out of the box body, and cotton fiber content in the environment is reduced. Meanwhile, fiber products are uniformly and finely cut.

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 provides a nanofiltration membrane, a preparation method of the nanofiltration membrane, and an application of the nanofiltration membrane prepared with the method in the water treatment field. The nanofiltration membrane comprises an electronegative support layer and at least one separation layer located on the surface of the support layer, wherein the separation layers comprise polycationic layers and polyanionic layers which are sequentially laminated; the polycationic layers are contacted with the support layer; or the nanofiltration membrane comprises an electropositive support layer and at least one separation layer located on the surface of the support layer; the separation layers comprise polyanionic layers and polycationic layers which are sequentially laminated; the polyanionic layers are contacted with the support layer; and an anionic polymer in each polyanionic layer is sulfonated poly ether sulfone with the structure as shown as Formula (I) and / or Formula (II) as shown in the specification. The nanofiltration membrane has excellent desalinization ratio, water permeability and acid-alkali corrosion resistance, and has a good industrial application prospect.

The invention provides a small-sized multifunctional online sample optical detection room which comprises a circulating detection pool, a constant-temperature ultrasonic water tank and an ultrasonic transducer, wherein the circulating detection pool is positioned in the constant-temperature ultrasonic water tank; distilled water is filled in the constant-temperature ultrasonic water tank; the lower 2 / 3 part of the circulating detection pool is submerged in the distilled water; and the ultrasonic transducer is arranged at the bottom of the constant-temperature ultrasonic water tank and connected with an ultrasonic generator. In the small-sized multifunctional sample detection room provided by the invention, an ultrasonic cleaning technique is used as reference; the circulating detection pool is installed in the small-sized ultrasonic water tank; the cleaning of the circulating detection pool and the stirring of the sample reaction system in the circulating detection pool are realized by utilizing an ultrasonic cleaning and stirring technique; and simultaneously, because an ultrasonic water bath technique is adopted, the water bath constant temperature of the circulating detection pool can be realized, the detection room has the three functions of stirring, cleaning and constant temperature of the circulating detection pool, and the structure of the detection room is simplified.

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 relates to an underwater epoxy concrete, mortar additive and a preparation method thereof. The additive comprises component A and component B which comprise the ingredients by weight percent: 40-45% of epoxy resin E-51, 16.5-21% of epoxy resin E-44, 9-13% of reactive diluent, 6.0-7.5% of toughening agent, 1-2% of coupling agent, 20-24% of curing agent T-31; wherein the curing agent T-31 belongs to the component B, and the rest ingredients are component A. The method comprises: the epoxy resin E-51 and the epoxy resin E-44 are heated to be about 40 DEG C and then evenly stirred; Kocsis toughening agent QS-BE is added; after that, the diluent and the coupling agent are added, and the mixture is evenly dispersed by a high-speed disperser, so that the component A can be obtained; the component A and the curing agent T-31 are mixed together and evenly stirred, so that the underwater epoxy concrete, mortar additive can be obtained. The additive is simple in preparation technique, and the prepared mixture has no phenomena of segregation and dispersion, has the functions of self-leveling and self-compaction and needs no concrete vibrating when being cast in the water; after being cured, the additive has good splicing performance with the original concrete; the prepared mixture has strong acid and alkali corrosion resistance after being cured in the water; therefore, the invention can be applied to underwater casting of concrete structures such as bridge piers, dams and bottom plates of reservoir power stations and the like as well as underwater thin-layer repair.

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 provides a multi-layer composite filtering net for an HEPA filter. The multi-layer composite filtering net for the HEPA filter is characterized by sequentially comprising polytetrafluoroethylene membrane polyester non-woven cloth, an activated-carbon-supported formaldehyde scavenger filtering net, an HEPA filtering net and polytetrafluoroethylene membrane polyester non-woven cloth from the windward end to the downwind end. A single HEPA filtering net of an HEPA filter of the prior art is replaced by the multi-layer composite filtering net, not only conventional particles but also formaldehyde can be efficiently removed, the application range is wide, the filtering efficiency is high, and the service life of the HEPA filtering net is prolonged.

The invention provides sky blue mirror reflection coated glass. The sky blue mirror reflection coated glass comprises a first metal absorption layer, a first medium layer and a second metal absorption layer. The first metal absorption layer, the first medium layer and the second metal absorption layer are orderly arranged on a base from bottom to top. The first metal absorption layer comprises a metal or alloy material with an extinction coefficient of 2.0 or more. The first medium layer comprises a medium material with a film refractive index of 2.0-2.7. The second metal absorption layer comprises a metal or alloy material with an extinction coefficient of 2.5 or more. The preparation method creatively breaks through the limitation of the conventional silver mirror glass preparation technology and white reflection effects, adopts a magnetron sputtering method, realizes layer-by-layer coating of the glass surface with a film material with an appropriate refractive index and can prepare mirror reflection glass with blue reflection effects.

A high-performance composite metallic material used for manufacturing cooking pan or cooker is composed of the 1st stainless steel layer, the 2nd aluminum layer, the 3rd Al-alloy layer, the 4th aluminum layer and the 5th stainless steel (or iron) layer. Its preparing process includes such steps as laminating three aluminum layers, rolling, heat treating, attaching two stainless steel layers, hot rolling and heat treating.

The invention relates to a special Half-type communication cable protection sleeve for seafloor. The special Half-type communication cable protection sleeve comprises the following components in parts by weight: 100 parts of polyvinyl chloride or chlorinated polyvinyl chloride or a mixture of both, 3-5 parts of stabilizer, 5-15 parts of toughening agent, 2-3 parts of processing aid, 1-2 parts of lubricant, 3-5 parts of biological repellent and 5-10 parts of acid and alkali resistant modifier; or the chlorinated polyvinyl chloride comprises the following components in parts by weight: 100 parts of polyolefin, 5-15 parts of toughening agent, 3-5 parts of biological repellent and 5-10 parts of acid and alkali modifier. When the special Half-type communication cable protection sleeve is manufactured, all materials, expect the acid and alkali resistant modifier, are blended and extruded to obtain the Half-type communication cable protection sleeve, and then the acid and alkali resistant modifier is sprayed on the outer surface of the protection sleeve, wherein the spraying thickness is 0.3-2mm. The special Half-type communication cable protection sleeve is reasonable in material selection and is suitable for protecting communication cables in the seafloor, a seafloor mounting process is simplified and requirements of complicated seafloor conditions are met.

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.