47results about How to "Maintain chemical balance" patented technology

The invention belongs to the technical field of coking, in particular to a foam coke-quenching method. The method comprises the following steps of: 1, dissolving a foam coke-quenching addition agent composed of an anionic surfactant, rare earth salt, amine salt and a stabilizing agent into water to be prepared into a water solution with concentration of 5-20%; 2, putting the high-concentration water solution in the step one into a coke-quenching water pool in a set proportion to enable water in the coke-quenching water pool to become a water solution with concentration of 0.01-0.1%; and 3, pumping the low-concentration water solution in the step two into a sprayer to be sprayed on high-temperature red cokes, stopping spraying till the coke temperature is dropped below 200 DEG, and completing coke quenching. When the water solution with concentration of 0.01-0.1% containing the foam coke-quenching addition agent is used for replacing common water for coke quenching, the surface of the high-temperature red cokes can form a layer of gas film, therefore water does not directly contact with the high-temperature red cokes, physical shock damage and chemical activation damage of the water to the high-temperature red cokes are avoided, the coke quality can be greatly increased, and the emission of harmful dust is reduced.

The invention relates to a lawn stain and a preparation method thereof. In every 100 percents of deionized water, the lawn stain comprises the following components in percentage by weight: 0.005-0.01% of monopotassium phosphate, 0.002-0.005% of potassium nitrate, 0.01-0.02% of magnesium sulfate, 0.005-0.01% of ferrous sulfate, 0.02-0.05% of sodium naphthaleneacetate, 0.005-0.01% of sodium copper chlorophyllin, 0.01-0.02% of barium stearate and 0.01-0.02% of calcium stearate. After being applied, the lawn stain can quickly stain the lawn into green, thereby enhancing the landscaping effect; the lawn stain can provide nutrient elements for the lawn and improve the growth conditions of the lawn; and the lawn stain can keep the lawn green for a long time, and can not easily fade. The invention is convenient to use, has the advantage of quick effect taking, and is an efficient environment-friendly stain.

The invention discloses a water-based LED (light emitting diode) chip cleaning agent, prepared from the following components of alkylolamide polyoxyethylene ether, polyoxyethylene sorbitan fatty acid ester, an emulsifier, an organic solvent, tetrahydrofurfuryl alcohol, trifluoroethanol, tripropylene glycol monomethyl ether, 2-(2'-hydroxylphenyl)benzoimidazole, sodium cumenesulfonate, a dispersant, a corrosion inhibitor and deionized water. The cleaning agent provided by the invention has the advantages that the effects of high cleaning efficiency, strong detergency, good safety performance, freeness from environmental pollution, energy saving and low washing cost are achieved; an LED is not damaged in a washing process; a protective film can be formed on the surface of a chip through the cleaning agent, so that air is isolated, and the chip is prevented from being corroded by moisture and other molecules in the air, therefore the effect of oxidation resistance is achieved, and a next production process is conveniently performed.

The invention provides an aqueous zinc plating sealing agent and a preparation method thereof, and relates to the technical field of zinc plating surface treatment, wherein the aqueous zinc plating sealing agent comprises the following raw materials by weight: 30-40 parts of sodium silicate, 6-10 parts of methyl polyacrylate, 3-7 parts of a defoamer, 1-5 parts of a coupling agent, 3-5 parts of a phosphite-based antioxidant, 10-14 parts of sodium nitrite, 3-9 parts of fatty alcohol polyoxyethylene ether, 4-6 parts of a film forming agent, 1-3 parts of a stabilizer, and 100 parts of water. The preparation method comprises: (1) weighing the raw materials; (2) preparing a solution a; (3) preparing a solution b; (4) preparing a solution c; (5) preparing a solution d; and (6) mixing the solutiona and the solution d. According to the present invention, the anticorrosive coating prepared by using the aqueous zinc plating sealing agent has advantages of smoothness, uniformity, no color change,strong corrosion and strong adhesion.

The invention discloses high-viscosity high-elasticity asphalt for a seamless expansion joint and a preparation method of the high-viscosity high-elasticity asphalt. The high-viscosity high-elasticityasphalt comprises the following raw materials in parts by weight: 49-93 parts of matrix asphalt, 7-41 parts of an additive, 2-21 parts of a mineral powder fiber, 35-40 parts of graded macadam, 0.2-1.4 parts of a cross-linking agent, 5-10 parts of a stabilizer and 1-5 parts of a tackifying resin, wherein the additive comprises rubber powder, a styrene-butadiene-styrene segmented copolymer, PE, anepoxy resin, a fiber and mineral powder; the cross-linking agent comprises sulfur and natural asphalt. By adopting the high-viscosity high-elasticity asphalt, the viscosity and the elasticity of asphalt can be improved, the service life of the asphalt can be greatly prolonged, various properties of the asphalt can be detected, the quality of the asphalt can be controlled, and the preparation method is simple.

The invention relates to trivalent chromium electroplating liquid and a preparation method thereof. The formula of the trivalent chromium electroplating liquid is as follows: 50-150g / L of chromium chloride, 30-120g / L of chromium sulfate, 50-120g / L of sodium chloride, 40-80g / L of boric acid, 20-90g / L of a stabilizer, 5-25g / L of a complexing agent, 7-45g / L of a brightener and the balance of deionized water with the total volume of various components being 1000ml. The preparation method comprises the steps of weighting appropriate amounts of the stabilizer and the complexing agent according to the formula, adding deionized water and stirring until the stabilizer and the complexing agent are dissolved; weighting appropriate amounts of chromium chloride, chromium sulfate and sodium chloride into the solution, stirring at room temperature until chromium chloride, chromium sulfate and sodium chloride are dissolved; heating the solution to 65 DEG C by virtue of a water-bath pot, adding an appropriate amount of the brightener additive and adjusting the pH value of the solution with boric acid to obtain the trivalent chromium electroplating liquid. The formed electroplated layer has the advantages of good abrasion resistance, corrosion resistance and high brightness and the electroplating liquid has good stability in the storage and application processes.

The invention discloses a color modified waterproof coating which is prepared by the following steps: grinding pigment and filler into powder by a ball milling way; sequentially adding the powder together with a film forming agent, a solvent and an auxiliary into a plastic tank; stirring for 8-10min till uniform mixing; stirring for 25-28min at a speed of 1,500rpm for full dispersion; adding a film forming agent and dispersing at a high speed for 3-5min to obtain a disperse system; adding a sodium hydroxide solution and adjusting the pH value to 7.5-8.5; and mixing uniformly to obtain the waterproof coating. In the invention, the film forming agent is modified to serve as an important raw material for preparing the coating disclosed by the invention, the tensile strength and film hardness are remarkably improved, and the prepared coating has good weather resistance and waterproof property under an indoor condition and has the effects of high-temperature resistance, thermal insulation and decoration; and the preparation process is simple.

The invention relates to an automotive pipeline which is made from a nylon material. The automotive pipeline comprises 0.5% of plasticizer, 0.8% of fire retardant and 0.6% of heat stabilizer. The automotive pipeline is characterized by further comprising 5% of glass beads and 0.5% of silicone. The invention further relates to a manufacture method of the automotive pipeline. The method comprises the following steps of: putting a pipe into a mould and fixing; blocking two ends of the pipe by a choke plug with holes; heating and forming by using steam; sizing by means of water cooling; and finally blowing to be dry by compressed air to obtain the formed automotive pipeline. The phenomena of deformation and springback of the nylon pipeline in the process of forming can be avoided, so that the production efficiency can be improved, the energy efficiency in the process of forming can be reduced, and the forming quality of the pipe can be guaranteed.

The invention provides nose mucus-cleaning soft wet wipes for babies; an original liquid comprises 0.33% normal saline, a chamomile extract liquid, a preservative, glycerin, vitamin E, a stabilizer, and the balance RO pure water or deionized water, wherein the preservative is at least one of bronopol and polyaminopropyl biguanide; the stabilizer is at least one of EDTA-2Na and EDTA-4Na. The nose mucus-cleaning soft wet wipes for babies provided by the invention have the advantages of mild nature, simple preparation process, no damage to baby skin when in use, disinfection and sterilization effects, and no toxic or side effects.

The invention discloses an improvement method of a compound glycyrrhiza oral solution production technology. The method comprises the steps of by taking 120ml of extractum glycyrrhizae liquidum, adding 120ml of glycerinum, evenly mixing, adding 500ml of water and diluting; then adding a proper amount of concentrated ammonia solution, and adjusting the pH value to be 8.00-9.00 to obtain an extractum glycyrrhizae liquidum solution; taking 5g of guaiacol glycerol ether, and adding a proper amount of hot water for dissolving to obtain guaiacol glycerol ether solution; adding the guaiacol glycerol ether solution into the extractum glycyrrhizae liquidum solution and stirring at the same time, adding 10g of sodium alginate and 5g of sodium carboxymethyl cellulose, and stirring for dissolving to obtain mixed solution; adding 180ml of compound camphor tineture into the mixed solution, evenly stirring, slowing adding right amount of concentrated ammonia solution, adjusting the pH value of the solution to be 8.00-8.50, and then adding a proper amount of water to form 1000ml of solution; evenly stirring, filtering and carrying sterilization to obtain the compound glycyrrhiza oral solution. The method solves the problems that the compound glycyrrhiza oral solution is easy to precipitate, easily goes bad, is unstable in product quality, etc.

The invention discloses a high-performance plastic shoe sole and belongs to the technical field of clothes materials. The high-performance plastic shoe sole is prepared from the following raw materials in parts by weight: 60 to 80 parts of PVC, 12 to 15 parts of calcium carbonate, 1 to 2 parts of epoxidized soybean oil, 0.5 to 1 part of citrate, 1 to 3 parts of tribasic lead sulfate, 1 to 2 parts of dibasic lead phosphite, 1.2 to 1.5 parts of barium stearate, 0.3 to 0.5 part of paraffin, 2 to 4 parts of foaming agent, 1.2 to 1.5 parts of pearl concentrate, 13 to 15 parts of chloroprene rubber, 1 to 2 parts of talcum powder, 0.4 to 0.8 part of ultraviolet light absorber, 3 to 4 parts of fire retardant and 5 to 10 parts of compatilizer. The invention further discloses a preparation method of the high-performance plastic shoe sole, and the high-performance plastic shoe sole disclosed by the invention has long service life, wear resistance and difficulty in swelling and broken phenomena.

The invention discloses a corrosion-resistant environment-friendly PVC modified material. The material comprises the following raw materials in parts by weight; 50-70 parts of PVC resin, 20-40 parts of nitrile rubber, 10-15 parts of a filling agent, 2-6 parts of a heat stabilizer, 1-20 parts of a plasticizer, 20-40 parts of an elastic modifier, 2-4 parts of an antioxidant and 3-5 parts of a lubricant, wherein the PVC resin is ethylene-process PVC resin with a polymerization degree of 1000 to 1200 and a density of 1.35 to 1.45 g / cm<3>; the filling agent is one of calcium carbonate, argil, talcum powder, diatomite and silicon dioxide; the heat stabilizer is prepared from a main stabilizer, an auxiliary stabilizer and an auxiliary agent according to a weight ratio of (20-40): (4-8): 1; the plasticizer is a mixture composed of a non-migration plasticizer PN-1030 and epoxidized soybean oil according to a weight ratio of (13-16): 1; and the elastic modifier is expanded polystyrene with a glass transition temperature of 80-90 DEG C and a density of 1.04-1.06 g / cm<3>. The material has the characteristics of capability of preventing photolysis and thermal decomposition, good elasticity, high tensile strength, good plasticity, good low temperature resistance, environment friendliness and high oxidation and corrosion resistance, and materials of all the components are convenient to obtain.

The invention discloses anti-corrosion weather-proof waterproof paint which is prepared from the following raw materials in parts by weight: 70 to 90 parts of film forming agent, 30 to 50 parts of solvent, 15 to 25 parts of coalescing agent, 10 to 20 parts of pigment filler and 10 to 30 parts of auxiliaries. A preparation method of the anti-corrosion weather-proof waterproof paint comprises the steps: grinding the pigment filler into powder in a ball milling mode; sequentially adding the pigment filler powder, the film forming agent, the solvent and the auxiliaries into a plastic tank; stirring for 8 to 10min until the materials are evenly mixed; stirring for 25 to 28min in a rotation speed of 1500r / min to fully disperse the materials; then adding the coalescing agent to disperse for 3 to 5min in a high speed to obtain a dispersion system; adding sodium hydroxide solution to adjust the pH value to 7.0 to 8.0; evenly mixing to obtain the anti-corrosion weather-proof waterproof paint. The tensile strength and the film hardness of the modified film forming agent are obviously improved, the paint which is prepared from the film forming agent matched with other ingredients has good weather resistance and waterproofness in the outdoor condition, also has the obvious effects of corrosion resistance and high temperature resistance and is simple in preparation process.

The invention discloses a novel electric heating mosquito-repellent incense liquid, relates to the field of daily necessities, and aims to help sleep and judge the exhaustion time and the stability of the pesticide effect. The mosquito-repellent incense liquid is used for killing mosquitoes and comprises mosquito-repellent liquid medicine and a volatilization core. The mosquito-repellent liquid medicine comprises the following components in parts by weight: 20-30 parts of lavender essential oil, 90-110 parts of an organic solvent, 30-40 parts of a synergist, 10-15 parts of a surfactant, 10-15 parts of a stabilizer, 1-2 parts of a preservative, 1-2 parts of an antioxidant and 1-3 parts of an insect-repellent drug. According to the mosquito-repellent incense disclosed by the invention, a refreshing substance is replaced by lavender essential oil, so that the mosquito-repellent incense is fragrant and can help sleep, and whether mosquito-repellent incense liquid is used up or not can be judged according to the concentration of fragrance in air and the color of volatile liquid; and the organic solvent can dissolve organic compounds, the synergist can improve the pesticide effect, the surfactant can reduce the liquid surface tension, the stabilizer can maintain chemical balance, the preservative can delay corruption, the antioxidant can prevent oxidation, and the insect-repellent drug can kill mosquitoes.

The invention discloses a fluororubber-containing modified waterproof coating which is prepared from the following components in percentage by weight: 35-45 percent of fluororubber, 25-35 percent of a film forming agent, 2-5 percent of a natural surfactant, 10-15 percent of a high temperature improving agent, 10-15 percent of a filler, 6-9 percent of a flame retardant and 1-4 percent of a pH regulator. The invention also discloses a preparation method of the waterproof coating. The preparation method comprises the following steps: adding the fluororubber, the film forming agent, the natural surfactant and the flame retardant in a sealed reaction kettle, continuously adding the filler for reaction for 1-3h under the condition with the temperature being 80-100 DEG C, cooling to 40-50 DEG C, adding the pH regulator, and carrying out continuous reaction to obtain the fluororubber-containing modified waterproof coating. As for the fluororubber-containing modified waterproof coating, by using the fluororubber, the formation of the waterproof coating is promoted, the adhesion performance of the waterproof coating to an interface is improved, the waterproof effect is better, and the waterproof coating is safe and environmentally friendly to use and cannot bring negative effects.

A wood plastic composite and a preparing method thereof are disclosed. The wood plastic composite is prepared from crop straw, waste PVC plastic and red mud which are three wastes, and active nanometer calcium carbonate, pure PVC resin and other processing auxiliary agents are added. The wood plastic composite comprehensively utilizes the three wastes. Straw fiber has strengthening and toughening effects. The wood plastic composite filled by the red mud is high in durance and long in service lifetime. The wood plastic composite is high in strength, high in durance and good in waterproofness.

The invention relates to a WPC floor which comprises the following components in parts by weight: 73.85-78.04 parts of PVC resin powder, 73.51-77.49 parts of stone powder, 10.12-15.71 parts of regulator, 4.12-4.95 parts of stabilizer, 3.87-4.21 parts of reinforcing agent, 0.47-0.82 parts of internal lubricant, 0.58-0.92 part of PE wax, 0.8-1.2 parts of oxidized paraffin and 1.18-1.55 parts of foaming agent. The invention has the advantages that the WPC floor is prepared from PVC resin powder, stone powder, regulator, stabilizer, reinforcing agent, internal lubricant, PE wax, oxidized paraffinand foaming agent; the environment-friendly nontoxic and odorless renewable resource of the PVC resin powder is capable of guaranteeing the overall environment-friendly effect and excellent plasticityof the WPC floor, 100% recycling of the WPC floor and no air pollution or environmental pollution caused by the WPC floor; the invention also discloses the WPC floor and the preparation method of theWPC floor.

The invention relates to an electronic part washing agent and a preparation method thereof. The electronic part washing agent comprises the following components in percentage by weight: 25%-35% of coconut oil glycol amide, 5%-10% of diethanol amine, 3%-6% of sodium silicate, 1%-5% of citric acid, 3%-8% of tripropylene glycol monomethyl ether, 3%-5% of an antirust agent, 1%-35 of a penetrating agent, 0.3%-1% of a stabilizer and the balance of deionized water. The preparation method of the electronic part washing agent comprises the following steps: preparing all the components according to the weight ratio, mixing coconut oil glycol amide, diethanol amine, sodium silicate, citric acid and tripropylene glycol monomethyl ether with the deionized water, heating to 40-50 DEG C by stirring at a rotation rate of 800-1000 rotations per minute, adding the antirust agent, the penetrating agent and the stabilizer, and continuing to stir for 10-15 minutes. The electronic part washing agent is high in washing efficiency, strong in decontamination capability, high in safety performance, free of the environment pollution and low in washing cost; the energy is saved; the damage to electronic parts in the washing process can be avoided.

The invention discloses an anti-ultraviolet flame-retardant multifunctional coating fabric finishing agent and a finishing process. The anti-ultraviolet flame-retardant multifunctional coating fabricfinishing agent comprises 5-26 parts of phenyl anthranilate, 0.4-0.6 part of a stabilizer, 1.5-23 parts of a surfactant, 1-1.2 parts of an antioxidant, 5-15 parts of a leveling agent, 2.5-15 parts ofpolyvinyl alcohol, 1.2-26 parts of a flame retardant and 2.5-60 parts of an organic solvent. The polyvinyl alcohol is an organic compound, is a white powdery solid and is flavorless, the surfactant comprises potassium 2-ethylhexanol phosphate diester, tetrabutylphosphonium iodide and sodium phytate; the antioxidant comprises a light stabilizer, a pH value stabilizer and a heat stabilizer; the phenyl anthranilate is colorless or light yellow crystals; and the solubility of the finishing agent in water is quite low, the finishing agent is not decomposed by concentrated alkali or concentrated acid, and the melting point of the finishing agent is 130 DEG C. After the finishing agent coats a fabric, the ultraviolet resistance is stable, and the finishing agent has flame retardance.

The invention belongs to the technical field of preparation of materials for 3D printing, and particularly relates to a graphene 3D printing material with high strength, and the graphene 3D printing material comprises the following components in parts by mass: 6-10 parts of modified graphene, 30-60 parts of polyetherimide, 18-24 parts of silicate fiber, 12-20 parts of epoxy resin, 3-15 parts of nano titanium dioxide, 0.1-3 parts of an antioxidant and 10-20 parts of an auxiliary agent. The auxiliary agent comprises the following components in parts by mass: 6-10 parts of silica aerogel, 3-5 parts of aluminum phosphate gel, 3-5 parts of an acidic aqueous solution of ethyl orthosilicate, 2-5 parts of a stabilizer, 2-4 parts of a toughening agent, 2-4 parts of a dispersant and 1-3 parts of anadhesive. The graphene 3D printing material with high strength has the advantages of low cost, rapid molding, high strength, high tensile strength and temperature bearing capability.

The invention relates to a preparation method of a modified polytrifluorochloroethylene material. The method comprises the following steps of: mixing PCTFE (polychlorotrifluoroethylene), a rare earth complex stabilizer, N,N'-bi[Beta-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] hydrazine, acrylic ester, stearic acid and PE wax together according to the mass ratio of 100:6-8:0.5-1:1-2:0.5-1:1-2, and adding the mixture into a mixing mill for melting and plasticizing, wherein the mixing processing temperature is 250-280 DEG C, and the revolving speed is 20-50r / min. The preparation method effectively broadens the processing window of PCTFE, makes the PCTFE material be subjected to injection molding while keeping better performance, plays an important role in expansion of application range of PCTFE products, and provides research basis and practical guiding significance to industrial production of the PCTFE products.

The invention relates to the technical field of medical PVC granules, and discloses an environment-friendly matte medical PVC granule and a preparation method thereof. The preparation method comprises the following steps of S1, enabling PVC cross-linked resin and other auxiliary additives to be subjected to mass weighing, S2, adding the materials into a high-speed mixer for mixing and stirring, S3, adding gas-phase nano silicon dioxide into the hot mixed powder, S4, stirring the hot mixed powder at a constant speed, and cooling the hot mixed powder in a cold mixer, S5, after the temperature of the mixture is cooled, adding the cooled mixed powder into an extruder for granulation, S6, adjusting the temperature of a machine barrel to be 150 DEG C and the temperature of a die head to be 155 DEG C, and carrying out pelletizing, and S7, cooling after pelletizing, and finally packaging and warehousing. According to the environment-friendly matte medical PVC granule and the preparation method thereof, the formula is reasonable, the production process is advanced, the matte requirement of the appearance of a medical instrument can be met, and the environment-friendly performance is high.

The invention relates to a synergistic herbicide as well as a preparation method and application thereof. The synergistic herbicide is prepared from the following components in percentage by weight: a first active component, a second active component, a synergist and an auxiliary material. The herbicide disclosed by the invention has a very good control effect on grassy weeds and broadleaf weeds such as adiantum capillus, eleusine indica, horseweed herb, malachium aquaticum, portulaca oleracea, rottboellia cochinchinensis, pennisetum purpureum, bidens pilosa and the like. According to the invention, two herbicides with different action mechanisms of contact killing and internal absorption are mixed and present complementary advantages, so a weeding rate is improved, a weed control spectrum is expanded, the time efficiency of weed control is prolonged, and the effective utilization rate of the herbicides is improved; and the added synergist can reduce the surface tension of a system and enhance performances such as spreadability, permeability and emulsification dispersibility, is beneficial to wetting, spreadability, adhesion and absorption of the liquid herbicides on the plant surface, promotes rain wash resistance, facilitates the absorption of weeds to the active components of the synergistic herbicide, improves the effective utilization rate of pesticides and reduces the use amount of the pesticides.

The invention discloses a wood-plastic composite material and a preparation method thereof. The invention adopts three kinds of wastes of crop straw, waste PVC plastic and red mud, adds active nanometer calcium carbonate, and prepares wood-plastic composite material with pure PVC resin and other processing aids. The wood-plastic composite material prepared by the present invention comprehensively utilizes three kinds of wastes, the straw fiber has the effect of strengthening and toughening, the wood-plastic composite material filled with red mud has high durability and service life, and the wood-plastic composite material prepared by the present invention The material has high strength, high durability, and good water resistance.

The invention discloses an art pigment preparation method, which comprises the processing steps of dissolving, heating, stirring, filtering and the like raw materials to obtain a finished product which comprises 2-4 parts of a dispersing agent, 0.5-0.8 part of a preservative, 5-8 parts of a coloring agent, 1-3 parts of a wetting agent, 0.3-0.5 part of a filling agent, 0.6-0.8 part of a cementing agent, 0.5-1 part of a stabilizer, 20-30 parts of purified water, 3-5 parts of an aromatic agent and 2-4 parts of a precipitant. According to the preparation method of the art pigment, the overall goodmixing effect is guaranteed, overall good coloring is facilitated, the overall coloring effect is improved, the overall dispersion effect after use is improved, the overall good coloring effect is guaranteed, meanwhile, overall storage and use are facilitated, the lavender essential oil is added into the whole body, the overall fragrance is increased, the overall forming effect is improved, and then the overall practicability is improved.

The invention discloses a dedicated anti-corrosive paint for a chemical pipeline and a preparation method thereof, and belongs to the technical field of the anti-corrosive paint. The dedicated anti-corrosive paint is prepared from the following components in parts by weight: 60-80 parts of asphalt emulsion, 30-40 parts of epoxy emulsion, 3-5 parts of an anti-corrosive agent, 1-2 parts of a sulfurizing agent, 12-17 parts of nano oxide, 3.8-5.5 parts of a silane coupling agent, 20-26 parts of acetone, 0.5-0.8 part of a stabilizing agent, 0.8-1.5 parts of an anion dispersing agent and 7-12 partsof deionized water. The dedicated anti-corrosive paint for the chemical pipeline disclosed by the invention is excellent in mechanical performance and insulation performance, resistant to water, hightemperature, low temperature and chemical corrosion, strong in adhesive force, and capable of maintaining the stability in the long-term acid-alkali environment, capable of being used for a long timeat the environment of -50 to 100 DEG C, and excellent in comprehensive performance. The paint can form a layer of dense protective film on the surface of the chemical pipeline, an anti-rust effect isplayed when the corrosion resistance is realized, thereby prolonging the service life of the chemical pipeline.

The invention discloses a medium-pressure torsion-resistant power cable. The power cable comprises at least one power cable core, at least one grounding cable core twisted with the power cable core, and a sheath layer wrapping the power cable core and the grounding cable core, wherein the power cable core comprises a conductor and an insulating layer covering the conductor; the insulating layer comprises the following components: ethylene propylene diene monomer rubber, microcrystalline wax, paraffin oil, antimony trioxide, titanium dioxide, nano zinc oxide, calcined kaolin, a coupling agent,an anti-aging agent, a vulcanizing agent and a vulcanizing assistant; and the sheath layer comprises the following components: chlorinated polyethylene, magnesium hydroxide, white carbon black, modified calcined kaolin, a thermoplastic elastomer, the anti-aging agent, red lead masterbatch, the antimony trioxide, light magnesium oxide, a calcium-zinc stabilizer, stearic acid, high-wear-resistant carbon black, a plasticizer, a cold-resistant plasticizer, the coupling agent, the vulcanizing agent and a vulcanization accelerator. The problem of the reduced service life of the torsion-resistant power cable of the 8MW offshore wind generating set due to long-term high-load flow, bending fatigue, aging, tearing and the like can be solved.

The invention provides a silicone oil defoamer for drilling fluid and a production process thereof. Kerosene is adopted as a solvent of aluminum stearate, so that solubility of aluminum stearate can be improved effectively; kerosene has excellent coagulation reducing effect, so that antifreezing coefficient of the defoamer can be remarkably improved, the defoamer still has high fluidity at low temperature of minus 20 DEG C, low-temperature defoaming performance of the defoamer is improved effect, and application occasions of the product are expanded; methyl silicon oil having excellent thermostability is introduced, so that thermostability of the defoamer can be improved effectively, the defoamer is small in evaporation loss at high temperature of 120 DEG C, and high-temperature defoamingperformance of the defoamer is improved effectively; excellent defoaming efficacy can be realized by only adding the defoamer accounting for 0.2-0.4% of volume of the drilling fluid; for fresh-water drilling fluid, 4% saline drilling fluid and saturated saline drilling fluid, density recovery rates of the defoamer can reach 95.4%, 97.6% and 98.5% respectively, and defoaming time is only 3.1min, 1.4min and 1.0min; the defoamer has potential industrial practical value.

The invention discloses a medium-voltage torsion-resistant power cable for a wind power generator set and a sheathing material of the medium-voltage torsion-resistant power cable. The sheathing material comprises 45-55 parts of chlorinated polyethylene, 8-12 parts of magnesium hydroxide, 8-12 parts of white carbon black, 10-18 parts of modified calcined kaolin, 8-15 parts of a thermoplastic elastomer, 0.7-1.3 parts of an anti-aging agent, 1.6-2.4 parts of red lead masterbatch, 4.5-5.5 parts of antimony trioxide, 5.4-6.4 parts of light magnesium oxide, 3-5 parts of a calcium-zinc stabilizer, 0.25-0.35 part of stearic acid, 0.8-1.4 parts of high wear-resistant carbon black, 5.5-6.5 parts of a plasticizer, 4.5-5.5 parts of a cold-resistant plasticizer, 0.35-0.65 part of a coupling agent, 1.2-2.6 parts of a vulcanizing agent and 0.8-2.4 parts of a vulcanization accelerator. The chlorinated polyethylene sheath is adopted as a power core outer sheath of the torsion-resistant power cable, andcan withstand a highest temperature of 105 DEG C, requirements of power transmission and application performance of a high-carrying capacity torsion-resistant cable of an offshore wind power generator set are met under normal working conditions, and the problem that the service life of a 8 MW offshore wind power generator set torsion-resistant power cable is reduced due to no compliance of agingresistance, bending fatigue resistance, abrasion resistance, tearing resistance and high-and-low temperature resistance.

The invention discloses a high-viscosity environment-friendly waterproof coating. The high-viscosity environment-friendly waterproof coating is prepared from the following raw materials in parts by weight: 80 to 100 parts of film-forming agent, 40 to 50 parts of solvent, 10 to 15 parts of film-forming additives, 15 to 25 parts of pigment filler, and 15 to 30 parts of additives. A preparation method comprises the following steps: successively adding the film-forming agent, the solvent and the additives into a plastic tank, stirring for 8 to 10 minutes until all materials are uniformly mixed, stirring for 25 to 28 minutes at a rotation speed of 1500 r / min, sufficiently dispersing the materials, then adding the film-forming additives, dispersing for 3 to 5 minutes at high speed to obtain a dispersion system, adding a mixed solvent of acetone and ethyl acetate in a mass ratio of 1 to 1 to adjust the viscosity, finally adding an ammonium hydroxide solution to adjust a pH value to be 7.5 to 8.5, and uniformly mixing, thus obtaining the high-viscosity environment-friendly waterproof coating. The film-forming agent is modified to be used as an important raw material of the coating provided by the invention, so that the tensile strength, the coating film hardness and the viscosity are remarkably improved, and the prepared coating is not only good in weather and water resistance in outdoor conditions, but also remarkable in anticorrosion and high-temperature-resistant effects, and is non-toxic and pollution-free.