185 results about "Chlorinated paraffins" patented technology

The invention relates to the technical field of waterproof coatings, in particular to a polyurethane waterproof coating and a preparation process thereof. The polyurethane waterproof coating is prepared from the following raw materials: toluene diisocynate, polyether polyol, chlorinated paraffin, talcum powder, a latent curing agent, self-repairing microcapsules and temperature-sensitive polymer nanoparticles. According to the self-repairing capsule, hexamethylene diisocyanate serves as a core material, the outer layer of the self-repairing capsule is wrapped with a polyurethane / nano-silicon dioxide hybrid wall material or a urea-formaldehyde resin wall material, and the temperature-sensitive polymer nanoparticles are poly N-isopropylacrylamide. The self-repairing microcapsules and the temperature-sensitive polymer nanoparticles are used, the self-repairing capacity and the capacity of adapting to different environmental conditions of a coating film are improved, when tiny cracks occur in the coating film, the microcapsules are broken to release a repairing agent, the cracks are automatically filled, the integrity of the coating is recovered, and the self-repairing performance of the coating film is improved. And the temperature-sensitive polymer nanoparticles can expand when the temperature rises to further promote the flowing and curing of the repairing agent, so that the service life of the coating film is prolonged, and the maintenance cost is reduced.

The invention discloses an easy-to-apply single-component polyurethane waterproof coating and a preparation method thereof, and belongs to the technical field of waterproof coatings. The easy-to-apply single-component polyurethane waterproof coating disclosed by the invention is prepared from the following raw materials: polyol, a plasticizer, a solid filler, isocyanate, a catalyst and a solvent, the polyol comprises polyether glycol and polyether triol; the plasticizer comprises acetyl tributyl citrate; the catalyst comprises a bismuth neodecanoate catalyst and a dimorpholine diethyl ether catalyst. According to the easy-to-apply single-component polyurethane waterproof coating disclosed by the invention, acetyl tributyl citrate is used for replacing traditional plasticizer chlorinated paraffin, and a bismuth neodecanoate catalyst and a dimorpholine diethyl ether (DMDEE) catalyst are compounded, so that the viscosity of the waterproof coating is effectively reduced, and construction is facilitated; meanwhile, the drying speed of the waterproof coating is increased.

The invention provides a synthesis method and application of a sulfuration modified palladium-iron bimetallic material. The method comprises the steps that potassium borohydride and sodium sulfide nonahydrate are dissolved in a solvent, sodium hydroxide is added into a sulfuration solution, the pH of the sulfuration solution is adjusted to be alkaline, and an alkaline solution is obtained. The method comprises the following steps: dropwise adding an alkaline solution into a mixed aqueous solution of FeSO4. 7H2O and sodium tetrachloropalladate at a speed of 10mL / min in a nitrogen atmosphere; and separating the precipitate from the mixed aqueous solution in a magnetic separation manner, and washing the precipitate for three times by using oxygen-free water and absolute ethyl alcohol to obtain the palladium iron sulfide bimetallic particles. Through a one-step reduction method of vulcanization and palladium doping, vulcanization modification and bimetal modification are combined to act on zero-valent iron, the stability of the zero-valent iron is enhanced through vulcanization, meanwhile, the reactivity of the zero-valent iron is improved through addition of bimetal, especially the selectivity to pollutants such as chlorinated paraffin and the reactivity after surface passivation are improved, and the stability of the zero-valent iron is improved. And the reliability and efficiency of the zero-valent iron in organic pollution remediation are greatly improved.

The invention provides a preparation method of chlorinated paraffin 70 with a high softening point, and belongs to the technical field of chlorinated paraffins.The preparation method comprises the steps that S1, mixed wax is provided, and raw materials of the mixed wax are Fischer-Tropsch wax and petrochemical wax; s2, feeding the mixed wax into a reactor, then turning on an ultraviolet lamp in the reactor for irradiation, after liquid chlorine is gasified to form chlorine, feeding chlorine into the reactor, heating and carrying out segmented control reaction; s3, after the reaction is finished, blowing air into the reactor, then washing a reaction product with water, and then adding a compound stabilizer into a crude product obtained by washing with water, so as to obtain chlorinated paraffin 70; the chlorine content of the chlorinated paraffin 70 is not less than 69.5%, the softening point is not less than 98 DEG C, and the acid value is not more than 0.1 mgKOH / g. According to the method, hot chlorination and photo-initiation are combined, so that the chlorine content and the softening point of the product are controllable, the production efficiency is high, the reaction speed is high, the reaction temperature is reduced, the production period is shortened, and the product quality is stable.

The invention discloses a high-flame-retardant plate and a production process thereof, and relates to the technical field of flame-retardant materials. The high-flame-retardant plate is prepared from the following raw materials in parts by weight: 90 to 110 parts of magnesium oxide, 15 to 20 parts of magnesium chloride, 30 to 35 parts of magnesium sulfate, 1.5 to 3 parts of modified polyvinyl alcohol, 1 to 2 parts of starch, 0.3 to 0.8 part of modified borax, 0.2 to 0.5 part of silane coupling agent KH-550, 1 to 2 parts of absolute ethyl alcohol, 2.5 to 3.5 parts of nano zinc borate, 2 to 4 parts of chlorinated paraffin-70, 0.5 to 1 part of nano titanium dioxide, 5 to 10 parts of basalt fiber and 0.2 to 0.5 part of calcium stearate. And 90 to 110 parts of deionized water. The raw materials of the high-flame-retardant plate are subjected to condensation cross-linking and nanometer enhancement of the modified polyvinyl alcohol and esterification and chelation treatment of the modified borax, so that the flame-retardant compatibility is improved. In production, pre-dispersion of the silane coupling agent and synergistic mixing of the starch paste are matched with precise viscosity regulation and control and stepped sanding, so that uniformity of the slurry is ensured. And hot pressing parameters are optimized, so that the plate is high in density and excellent in flame retardance and surface precision.

The invention discloses a preparation method of a ceramic core plasticizer for high-temperature alloy investment casting, and relates to the technical field of plasticizers, and the preparation method comprises the following preparation steps: step 1, adding microcrystalline wax into modified chlorinated paraffin, heating, stirring and melting, adding a heat stabilizer, mixing, continuously stirring, heating for reaction, adding polyethylene wax, and continuously stirring; 2, after cooling, adding stearic acid, and continuously stirring; and 3, granulating and packaging to obtain the special plasticizer for the ceramic core. According to the preparation method of the ceramic core plasticizer for high-temperature alloy investment casting, polar groups such as hydroxyl groups and ester groups are introduced to a chlorinated paraffin molecular chain, strong interaction is formed between the polar groups and hydroxyl groups on the surface of ceramic powder, and a uniform wax coating layer is formed on the surface of powder particles.

The invention belongs to the technical field of polyurethane, and particularly relates to bio-based flame-retardant polyurethane polystyrene foam. The bio-based flame-retardant polyurethane polystyrene foam is prepared from the following raw materials in parts by weight: 60 to 75 parts of amino acid-based modified polyether polyol; 25-40 parts of a nitrogen and phosphorus-containing hydroxyl-terminated modified polymer; 380 to 440 parts of modified isocyanate; 100 to 130 parts of chlorinated paraffin; 40 to 60 parts of filler; 8-10 parts of silicone oil; 80 to 100 parts of a propellant; and 3-5 parts of a catalyst. Bio-based raw materials such as castor oil and amino acid are introduced into the molecular structure of the polyurethane polystyrene foam through chemical modification, so that the biodegradability of the material is improved; a proper polymeric monomer is screened, and a flame-retardant element chlorine is introduced into a polyether molecular structure through chemical polymerization and forms multi-element synergy with nitrogen and phosphorus elements bridged through ester bonds, so that the content of the flame-retardant element in the polystyrene foam material is effectively increased, and the flame retardance is improved.

The invention relates to the technical field of high polymer materials, and particularly discloses high-weather-resistance chlorinated polyethylene and a preparation method thereof. The high-weather-resistance chlorinated polyethylene is prepared from the following raw materials in parts by weight: 110 to 150 parts of chlorinated polyethylene, 9 to 15 parts of chloroprene rubber coated nano titanium dioxide, 38 to 60 parts of ionic liquid modified nano calcium carbonate, 5 to 10 parts of polyvinylidene fluoride resin, 10 to 20 parts of chlorinated paraffin and 1 to 6 parts of antioxidant, the preparation method comprises the following steps: S1, preparing chloroprene rubber coated nano titanium dioxide; s2, preparing ionic liquid modified nano calcium carbonate; s3, internal mixing; and S4, carrying out screw extrusion and press polish. The high-weather-resistance chlorinated polyethylene can be used for building waterproof coiled materials, outdoor protective coatings, automobile sealing strips, wire and cable sheaths and the like, and has the advantages of high tensile strength, elongation at break, impact toughness, ultraviolet aging resistance and thermo-oxidative degradation resistance.

The invention discloses a method for degrading short-chain chlorinated paraffin in soil based on microwave irradiation, and belongs to the technical field of soil pollution remediation. The invention aims to solve the problems of high energy consumption, long reaction time, low efficiency and low degradation rate of the existing method for degrading the short-chain chlorinated paraffin in the soil. The method comprises the following steps: 1, soil pretreatment; 2, extracting by using normal hexane; 3, carrying out microwave degradation treatment; and 4, after the reaction is finished, naturally cooling to room temperature to obtain the soil without the short-chain chlorinated paraffin. The short-chain chlorinated paraffin (SCCPs) in the soil is degraded by a microwave method, and gt can be degraded within 10-15 minutes through the synergistic effect of a microwave heat effect and a non-heat effect; the efficient degradation rate is 90%. The invention provides an efficient, economic and ecologically sustainable solution for the SCCPs polluted soil.

The invention discloses an application and a method for preventing and controlling longhorn beetles by using a disotropic agent, and belongs to the technical field of prevention and control of agricultural pest longhorn beetles. The component of the lysimachia christinae disruption agent is trans-9-tetradecene-2, 2-difluoroacetate, and the disruption effect of the lysimachia christinae disruption agent is superior to that of a lysimachia christinae disruption pheromone disruption substance under the same dosage. According to the isotropic agent, 100-200 mg of trans-9-tetradecene-2, 2-difluoroacetate is dissolved in liquid chlorinated paraffin and added into a polyvinyl chloride (PVC) capillary tube to be prepared into isotropic filaments, 30-60 isotropic filaments are arranged per mu in the using process, and the result shows that the field lasting period of the isotropic filaments is longer than 3 months, and the isotropic rate is larger than 80%. The isotropic agent disclosed by the invention can be used for remarkably interfering the mating of male and female jettilonghorn beetles, is safe to the environment and natural enemies, is simple to operate, can be used for preventing and treating the pests in a large area, and has important significance on comprehensive treatment of the jettilonghorn beetles.

This application provides a flame-retardant and toughened cable material, prepared from the following components in parts by weight: 85-100 parts PVC resin, 15-20 parts dioctyl phthalate, 10-15 parts chlorinated paraffin, 10-15 parts dioctyl terephthalate, 40-50 parts heavy calcium carbonate, 5 parts stabilizer, 2-3 parts PE wax, 1-2 parts stearic acid, and 20-30 parts flame-retardant particles. The flame-retardant particles are composite microspheres formed by loading flame retardants onto nano-silica aerogel and grafting POSS onto its surface. Nano-silica aerogel has a higher temperature resistance limit, and its unique three-dimensional porous network structure can absorb heat and restrict oxygen diffusion. It can also load flame retardants, resulting in a more uniform distribution of the flame retardant. POSS acts as a bridge between the nano-silica aerogel and PVC resin, improving the compatibility and bonding strength between the flame-retardant particles and PVC resin, reducing stress concentration, and improving toughness, thus achieving simultaneous improvement in flame retardancy and toughness.

The invention provides a wear-resistant anti-aging waterproof tarpaulin and a preparation method thereof, and belongs to the technical field of tarpaulin. The wear-resistant anti-aging waterproof tarpaulin comprises a base cloth layer and a PVC (polyvinyl chloride) coating coated on the base cloth layer, wherein the PVC coating is prepared from the following raw materials: 70 to 90 parts of PVC paste resin, 5 to 15 parts of a composite plasticizer, 10 to 30 parts of TiO2-HNTs powder, 3 to 5 parts of chlorinated paraffin, 8 to 12 parts of an additive and 80 to 100 parts of a solvent. The titanium dioxide and the halloysite nanotubes are compounded, the titanium dioxide is loaded on the halloysite nanotubes, agglomeration of the titanium dioxide is prevented, and the mechanical property and wear resistance of the tarpaulin can be effectively enhanced by adding the halloysite nanotubes.

The invention discloses a non-chlorine system gear shaving process oil composition. The raw materials include, by mass, 75% to 85% of mineral base oil, 2% to 10% of anti-wear agent, 2% to 10% of extreme pressure agent, 5% to 10% of oiliness agent, 0.1% to 0.5% of antioxidant, 0.4% to 1% of rust inhibitor, 0.1% to 0.5% of corrosion inhibitor, and 20-50 ppm of anti-foaming agent. The non-chlorine system gear shaving process oil composition has the same excellent lubricating extreme pressure performance as a chlorinated paraffin system without using chlorinated paraffin or other chlorine agents, solves the practical problem of chlorinated paraffin being commonly used in gear shaving process oils, has better lubricity and service life, and improves the processing precision of gear shaving parts.

The application relates to the technical field of fine chemicals, in particular to a biomimetic amphoteric surfactant as well as a preparation method and application thereof; the preparation method of the biomimetic amphoteric surfactant comprises the following steps: reacting a fatty amine polyoxyethylene ether with a halogenated hydrocarbon to obtain a benzyl quaternary ammonium salt intermediate; cooling the benzyl quaternary ammonium salt intermediate, then adding phosphorus pentoxide to react; after the addition is completed, water is added, the reaction is continuously carried out, and the biomimetic amphoteric surfactant is obtained; the biomimetic amphoteric surfactant simultaneously integrates three characteristics of phosphate anion, polyether non-ion and benzyl quaternary ammonium salt cation, effectively solves the industry problem that traditional phosphates and cationic settling agents are incompatible, and is applied to metal processing fluid, can realize stable compounding with cationic settling agents while retaining excellent extreme pressure lubricity and hard water resistance, and can replace traditional extreme pressure agents such as environmentally-unfriendly chlorinated paraffin.

The invention relates to the field of stamping oil, in particular to environment-friendly stamping oil and a preparation method thereof.The environment-friendly stamping oil is composed of isoparaffin solvent oil, a lubrication enhancer and an extreme pressure anti-wear agent; wherein the extreme pressure anti-wear agent is chlorinated paraffin loaded phosphate type ionic liquid, the environment-friendly stamping oil has excellent use performance, workpiece scratches can be effectively reduced, a mold can be protected, and under extreme high pressure, the oil product can still keep lubrication and prevent sintering.

The invention belongs to the technical field of analysis and detection of organic pollutants, and particularly relates to a pretreatment method for synchronously extracting polycyclic aromatic hydrocarbon and chlorinated paraffin from serum and a detection method of the polycyclic aromatic hydrocarbon and the chlorinated paraffin. According to the method, the polycyclic aromatic hydrocarbon and the chlorinated paraffin are synchronously extracted from the serum by using acetonitrile as a precipitator, a silica gel column as a solid-phase extraction column, a mixture of normal hexane and dichloromethane as an extraction reagent and a pretreatment method of eluent purified by the silica gel column. The method is simple and convenient to operate, short in time consumption and capable of effectively avoiding background interference. On the basis, the pretreated sample is detected in combination with chromatography-tandem mass spectrometry, the content of different types of polycyclic aromatic hydrocarbons and chlorinated paraffin in the serum can be detected, and reliable data support is provided for studying the relevance between environmental pollutant exposure and human health. By analyzing the distribution characteristics of the organic pollutants in a living body, the metabolic conversion pathway of the organic pollutants can be further clarified, and the internal mechanism of the toxic effect of the organic pollutants is disclosed.

The invention discloses a foaming material for a floor sound insulation board and a preparation method of the foaming material. Comprising the following raw materials in parts by weight: 25-45 parts of nitrile rubber, 25-45 parts of polyvinyl chloride, 10-20 parts of chlorinated polyvinyl chloride, 110-150 parts of filler, 10-20 parts of a foaming agent, 5-15 parts of decabromodiphenyl ethane, 3-7 parts of antimony trioxide, 1-3 parts of butadiene rubber, 8-12 parts of carbon black, 4-8 parts of paraffin, 65-85 parts of chlorinated paraffin oil, 2-3 parts of a lubricant, 1-3 parts of epoxidized soybean oil, 0.3-0.9 part of an anti-aging agent and 2-4 parts of an accelerant. 0.2 to 0.6 part of zinc oxide and 0.4 to 0.8 part of vulcanizing agent. The foaming material provided by the invention takes the nitrile rubber, the polyvinyl chloride and the chlorinated polyvinyl chloride as main materials, is used for the floor sound insulation board, and has high mechanical properties and good anti-aging performance.

The application relates to the technical field of chemical protection materials, and discloses a hydrofluoric acid protective garment and a preparation method thereof. The material of the protective garment comprises a 5-layer structure, the middle layer is a framework fabric, and modified natural rubber layers and modified EPDM (ethylene propylene diene monomer) rubber layers are sequentially arranged on the two sides of the framework fabric. The raw materials of the modified natural rubber comprise, by weight parts, natural rubber 100 parts, sulfur 3-4 parts, accelerator M 1-2 parts, accelerator DM 1-2 parts, zinc oxide 4-6 parts, stearic acid 1-2 parts, white carbon black 10-15 parts, calcium oxide 20-40 parts, chlorinated paraffin 5-15 parts, antimony trioxide 5-15 parts and antioxidant 4010NA 1-2 parts. The modified natural rubber and the modified EPDM rubber are used as main protection substances, and organic solvents are used as carriers, so that the hydrofluoric acid protective garment not only has long-acting protection capability for hydrofluoric acid, but also has the characteristics of high mechanical strength, heat aging resistance, flame resistance and low-temperature softness.

The utility model belongs to synthetic chlorinated paraffin technical field especially, it is a kind of chlorinated paraffin catalytic reaction device, it includes device main part and feeding opening, the feeding opening is arranged at the top of device main body, chlorinated paraffin catalytic reaction device further includes: filter cartridge and connecting buckle, the filter cartridge swing joint is in the inner wall of feeding opening, the quantity of connecting buckle is two, two connecting buckles are fixedly connected in the outer wall of filter cartridge symmetrically;Slide, the quantity of slide is two, two slides are symmetrically slidingly connected in the top connecting plate of device main body, the quantity of connecting plate is two, two connecting plates are fixedly connected in the side of two slides mutually close, connecting plate and connecting buckle are adapted;In the utility model, filter cartridge is installed or disassembled by pressing plate driving connecting plate movement, filter cartridge is set in feeding opening, and paraffin raw materials are filtered conveniently, chlorinated paraffin production is facilitated, and good practicality and convenience are possessed.

The utility model relates to a valve with a heating function, and belongs to the technical field of valves. The valve with the heating function comprises a valve body, a valve switch is arranged on one side of the valve body, a wrench is installed on the valve switch, and the valve is opened and closed by rotating the wrench. The outer side of the valve body is sleeved with a detachable heater, and the heater is hollow. The heater is provided with an air inlet and an air outlet; the heater comprises two heater shells, and the two heater shells are connected through a rotating shaft; a hanger is arranged on one side of the heater shell relative to the rotating shaft; bolts are inserted into the hangers to close the heater. The valve is simple in structure, and an external heat source is introduced to heat the valve by arranging the detachable heater at the valve. The heater can extend up and down to completely cover the part from the bottom of the reaction kettle to the valve, so that no solidified chlorinated paraffin exists at the lower part of the bottom of the reaction kettle, and the blockage phenomenon is avoided.

The invention belongs to the technical field of caulking agents, and particularly relates to a polyurethane caulking agent and a preparation method thereof.The polyurethane caulking agent is prepared from, by mass, 35%-40% of siloxane modified dendritic polyether tetrahydric alcohol, 35%-40% of diphenylmethane diisocyanate, 5%-10% of plasticizer chlorinated paraffin, 3%-4% of 2-phenyl-5-trifluoromethyl-1, 3-oxazolidine latent curing agent, 1%-2% of foam stabilizer and 1%-2% of catalyst 2. 0.5-0.8% of 2, 2 '-dimorpholinyl diethyl ether, 5-8% of dimethyl ether and 5-8% of propane and butane. According to the polyurethane joint mixture, the 2-phenyl-5-trifluoromethyl-1, 3-oxazolidine latent curing agent is added, in the curing process, the latent curing agent reacts with water in advance of the diphenylmethane diisocyanate to form an amine substance, amido in the amine substance reacts with the diphenylmethane diisocyanate to generate a macromolecular polymer, curing of the polyurethane joint mixture is achieved, and the polyurethane joint mixture has the advantages that the curing effect is good; the curing time can be shortened, and the construction speed is increased.

The invention provides a high-precision rapid machining method for a wave-absorbing honeycomb, which comprises the following steps: step 1, immersing an initialized wave-absorbing honeycomb into concentrated nitric acid for heating and heat preservation treatment to obtain the initialized wave-absorbing honeycomb; step 2, preparing a surface modified wave-absorbing honeycomb according to the dried initialized wave-absorbing honeycomb; step 3, drying and treating the surface modified wave-absorbing honeycomb to prepare the wave-absorbing honeycomb without holes in the bottom; step 4, heating and melting solid chlorinated paraffin into a liquid state, adding a potassium carbonate catalyst, and injecting into honeycomb holes of the wave-absorbing honeycomb without holes in the bottom to prepare a solid-state integrated chlorinated paraffin / wave-absorbing honeycomb / polyimide composite structure; 5, the composite structure is placed in a five-axis machining tool, and a solid-state integrated chlorinated paraffin / wave-absorbing honeycomb / polyimide composite structure in a preset shape is prepared; 6, after the composite structure in the preset shape is processed, the wave-absorbing honeycomb in the target shape is prepared and obtained.

The utility model belongs to the field of chemical production equipment, and discloses a chlorinated paraffin by-product purification device, which consists of a reaction kettle, a stirring mechanism, a filtering mechanism, a pump body, a distillation mechanism and a cooling mechanism. The reaction kettle is provided with a first feed port for feeding, and the stirring mechanism drives stirring blades and a scraper plate through a motor to realize material mixing and inner wall cleaning; the filtering mechanism adopts a wire mesh for rough filtration and a microfiltration membrane for fine filtration to remove large and small particle impurities; the pump body conveys the filtered materials to the distillation mechanism, the materials are heated by the heating rod, and low-boiling-point substances and high-boiling-point substances are separated by utilizing boiling point difference; a spiral condensation pipe in the cooling mechanism is matched with cooling liquid to cool and collect distilled steam. The device has the characteristics of high automation degree, safety, reliability, energy conservation, environmental protection and the like, can remarkably improve the purity and the recycling rate of the byproducts, reduces the production cost and the environmental pollution, and has a wide application prospect.

The application provides a preparation method of fish scale biomimetic modified graphite heat-conducting waterproof paint and relates to the technical field of heat-conducting waterproof paint, which comprises the following steps: preparing a modified scale graphite precursor, preparing a modified scale sericite and preparing the fish scale biomimetic modified graphite heat-conducting waterproof paint. The fish scale biomimetic modified graphite heat-conducting waterproof paint comprises 3-65% of modified scale graphite, 8-50% of modified scale sericite, 0-55% of calcium carbonate, 11-20% of polyether, 11-20% of chlorinated paraffin, 0.1-0.9% of a chain extender, 0.01-0.1% of a defoaming agent, 0.01-0.05% of a wetting dispersant, 0.1-0.8% of silica aerogel powder and 0.01-0.15% of a catalyst drier according to the mass percentage. The paint has high tensile strength, elongation at break and heat conductivity, a long storage stability period and excellent water impermeability.

The invention relates to the technical field of anti-corrosion coatings, and particularly provides a hydrophobic anti-corrosion coating and a preparation method thereof. Comprising the following raw materials: acrylate-styrene copolymer emulsion, chlorinated paraffin, fluorosilicone oil, waterborne epoxy resin emulsion, sodium methyl silicate, a coupling agent, an emulsifier, a thickening agent, a pH value regulator and a defoaming agent. The invention discloses a preparation method of the coating, which comprises the following steps: putting the acrylate-styrene copolymer emulsion into a reaction kettle, and heating; adding the coupling agent, uniformly stirring, continuously adding the emulsifier, and uniformly stirring; the preparation method comprises the following steps: adding sodium methyl silicate into a reaction kettle, then adding chlorinated paraffin, fluorosilicone oil and a water-borne epoxy resin emulsion, uniformly stirring, and then adding a pH value regulator; adding a thickening agent to adjust the viscosity; and after cooling, adding the defoaming agent and uniformly stirring. The coating disclosed by the invention not only has a very good hydrophobic effect, but also has excellent ultraviolet resistance and adhesive force.

The invention provides a single-component polyurethane foam joint mixture which comprises the following raw materials: a white material, a black material and an aerosol propellant, the white material comprises the following components in percentage by weight: 20-40% of polyether polyol, 2-10% of a disulfide bond-containing hydroxyl compound, 2-10% of other hydroxyl and amino compounds, 35-60% of chlorinated paraffin, 1.5-5% of a foam stabilizer, 0.5-2% of a catalyst, 1-5% of an anti-ultraviolet antioxidant and 3-5% of a flame retardant; the black material is isocyanate and comprises PAPI or MDI; the aerosol propellant comprises a mixture of dimethyl ether and propane and butane. The invention further provides a preparation method of the single-component polyurethane foam joint mixture. The preparation method comprises the steps of white material preparation, filling and packaging, curing and the like. The material has excellent toughness and fatigue resistance, and meets the construction requirements of multiple scenes such as severe cold areas and indoor low temperature. The flame-retardant efficiency is remarkably improved, and no negative influence is generated on the foaming ratio, bonding strength and other core properties of foam.

The invention discloses a flame-retardant foaming material and a preparation method thereof. Comprising the following raw materials in parts by weight: 25-35 parts of nitrile rubber, 50-60 parts of polyvinyl chloride, 140-180 parts of a flame retardant, 30-40 parts of a foaming agent, 1-2 parts of butadiene rubber, 1-3 parts of carbon black, 4-6 parts of paraffin, 60-70 parts of chlorinated paraffin oil, 2-3 parts of a lubricant, 1-3 parts of epoxidized soybean oil, 0.6-1.0 part of an antioxidant, 2-5 parts of an accelerant, 0.3-0.6 part of zinc oxide and 0.4-0.8 part of a vulcanizing agent. The foaming material disclosed by the invention takes nitrile rubber, polyvinyl chloride and the flame retardant as main materials, is high in safety level and can be used for efficiently retarding flame.

The invention relates to the technical field of chemical production equipment, in particular to a refining device for chlorinated paraffin. The invention provides a refining device for chlorinated paraffin. The refining device comprises a supporting frame body, a degassing tank is fixedly mounted in the supporting frame body, a feeding pipe and an exhaust pipe are arranged at the top of the degassing tank, a discharging pipe is arranged at the bottom of the degassing tank, a motor is mounted on the supporting frame body, and an output shaft of the motor is connected with a stirring paddle extending into the degassing tank; a gas inlet cavity is formed in the lower part of the stirring paddle, the bottom of the degassing tank is fixedly connected with an annular box, and the stirring paddle penetrates through the annular box. The Venturi tube type compressed air bag is used for pressurizing inert gas, so that the inert gas overcomes the resistance of viscous liquid and forms fine bubbles, and the air-liquid contact area is increased; the stirring paddle is matched to drive the gas bag to rotate, so that bubbles are uniformly distributed, the retention time is prolonged, and the removal efficiency of impurities such as hydrogen chloride and chlorine is greatly improved; and the intermittent exhaust device can also avoid waste of gas which is not fully utilized due to continuous exhaust.

The present invention relates to the technical field of coatings, and discloses a flame-retardant modified polyurethane coating and a preparation method thereof. The flame-retardant modified polyurethane coating of the present invention comprises component A and component B. Component A comprises raw materials in the following weight parts: 30-45 parts of polyether diol 2000D, 20-25 parts of polyether triol 330N, 15-30 parts of phosphate group nona-isocyanate; Component B comprises raw materials in the following weight parts: 2.5-19.5 parts of chlorinated paraffin, 0.2-0.5 part of dispersant 755W, 1-3 parts of 800-mesh heavy calcium, 1-4 parts of phosphate group nano-titanium dioxide, 0.5-1 part of leveling agent 100, 0.2-0.5 part of defoaming agent 810, 5 parts of propylene glycol methyl ether acetate, 0.1-0.3 part of dibutyltin dilaurate. Mix the two evenly to obtain the flame-retardant modified polyurethane coating. The flame-retardant modified polyurethane coating prepared by the present invention has excellent flame-retardant performance, antibacterial performance and mechanical properties.

The invention relates to the technical field of composite rubber jackets for cables. The composite rubber sleeve is prepared from the following raw materials in parts by weight: 60 to 80 parts of chlorinated polyethylene rubber, 40 to 60 parts of ethylene propylene diene monomer, 20 to 30 parts of carbon black, 10 to 20 parts of precipitated calcium carbonate, 6 to 10 parts of talcum powder, 4 to 6 parts of filler, 2 to 4 parts of anti-aging agent, 3 to 5 parts of magnesium oxide, 0.6 to 0.8 part of paraffin, 0.2 to 0.4 part of polyethylene wax, 0.4 to 0.6 part of microcrystalline wax, 2 to 4 parts of antimony trioxide, 2 to 4 parts of chlorinated paraffin and 1 to 3 parts of additive. According to the invention, KH570 provides a reactive methacryloyloxy group which can also participate in a vulcanization system reaction, so that the interface bonding performance of the quartz powder, the mica powder and a material matrix is effectively improved, the strength performance of the composite rubber sleeve is effectively improved, and the service life of the composite rubber sleeve is effectively prolonged.