11 results about "Stearoyl chloride" patented technology

The invention relates to the technical field of material science and engineering, and discloses a nanocellulose-based oil-water separation and adsorption composite material, which is prepared from the following raw materials in parts by mass: 35 to 45 parts of nanocellulose; 8 to 11 parts of bagasse cellulose; 10 to 15 parts of sodium lignin sulfonate; 4 to 8 parts of chitosan; 5-10 parts of oxidized starch; 5 to 8 parts of cellulose nanowhiskers; 2-5 parts of silicon dioxide nanoparticles; 0.5 to 1 part of calcium carbonate nanoparticles; 1-2 parts of a citric acid cross-linking agent; 1-2 parts of graphene oxide; 0.3 to 0.6 part of ethylene diamine tetraacetic acid; 2-5 parts of glycerol; 0.4 to 1 part of stearoyl chloride; 2-4 parts of nano iron oxide; the preparation method comprises the following steps: pretreating the raw materials, mixing the pretreated raw materials into slurry, carrying out crosslinking and ultrasonic dispersion, standing to obtain a basic mixture, injecting the basic mixture into a mold, carrying out freeze drying to form a photocatalytic layer, carrying out centrifugal dewatering, carrying out chelation reaction, spraying a composite solution, and carrying out vacuum drying to obtain the photocatalytic material. The obtained composite material has the advantages of efficient adsorption capacity, good mechanical properties, environmental friendliness, degradability and low preparation cost.

The invention relates to the technical field of polyvinyl chloride materials, and discloses a lead and arsenic-free polyvinyl chloride sheath cable material and a preparation method thereof. The polyvinyl chloride sheathed cable material comprises the following raw material components in parts by weight: 100 parts of polyvinyl chloride resin powder, 40-45 parts of a plasticizer, 5-7 parts of a stabilizer, 10-15 parts of calcium carbonate, 10-15 parts of aluminum hydroxide, 2-4 parts of magnesium hydroxide, 0.5-2 parts of an anti-dripping agent and 0.2-1 part of a synergist, the stabilizer is folic acid modified Ca-Mg-Al-LDH (layered double hydroxide). The plasticizer is composed of dioctyl terephthalate and stearoyl chloride modified red phosphorus microcapsules. The prepared polyvinyl chloride sheathed cable material has good flame retardance and heat aging resistance.

The invention discloses a preparation method of a Janus membrane with a hierarchical structure and an adjustable hydrophilic layer thickness, and belongs to the technical field of traditional Chinese medicine volatile oil separation. According to the method, firstly, a substrate is modified into a hydrophilic substrate film through layer-by-layer self-assembly of tannic acid-iron ions and polyethyleneimine, then the hydrophilic substrate film is placed on a phytic acid aqueous solution-n-hexane two-phase interface, the thickness of a hydrophilic layer is continuously adjustable in the range from 20 micrometers to the range smaller than the total thickness of the substrate by regulating and controlling the concentration of phytic acid and the adding time of stearoyl chloride, and the hydrophilic substrate film is obtained. And cleaning and drying to obtain the Janus membrane with the hierarchical structure and the thickness-adjustable hydrophilic layer. The method can be adapted to separation of traditional Chinese medicine volatile oil distillate and other complex systems, and the substrate is high in universality, short in preparation time and wide in application prospect in the fields of traditional Chinese medicine processing and oil-water separation.

The invention discloses a low-temperature-resistant food packaging composite bag and a preparation method thereof, and relates to the technical field of plastics. The packaging film comprises a base material layer, a barrier layer and a heat sealing layer which are arranged in sequence. Wherein the base material layer is a biaxially oriented polypropylene film; the barrier layer is an ethylene-vinyl alcohol copolymer film; the heat sealing layer is prepared from the following raw materials in parts by mass: 100 to 150 parts of low-density polyethylene particles, 1.5 to 2 parts of synergist, 0.1 to 0.2 part of antioxidant 1010, 0.5 to 1 part of calcium stearate, 15 to 20 parts of polyolefin elastomer and 2 to 5 parts of modified nano calcium carbonate; the synergist is prepared from stearoyl chloride, triethylamine and epsilon-polylysine; the modified nano calcium carbonate is prepared from nano calcium carbonate and stearic acid. Due to the introduction of the synergist and the modified nano calcium carbonate, the elongation at break, the tensile strength, the barrier capacity, the low temperature resistance and the antibacterial property of the food packaging bag are effectively improved. Therefore, the method has a wider application prospect.

The application provides a preparation method and application of modified nano-starch coating super-hydrophobic paper, and belongs to the technical field of papermaking. The method comprises the following steps: nano-starch preparation, nano-starch modification and super-hydrophobic paper preparation. First, starch dispersion paste is gelatinized, and nano-starch is precipitated by using anhydrous ethanol to form a nano-starch colloidal suspension. Hydrophobic modification of the nano-starch is realized by using triethylamine as a catalyst, ethyl acetate as a solvent and stearoyl chloride as a modifier. Then, the modified starch ethanol dispersion is sprayed onto the surface of paper, and super-hydrophobic paper is obtained after solidification. The super-hydrophobic paper prepared by the application is a full bio-based material, is biodegradable, green and environmentally friendly, non-toxic, simple in process flow, low in cost, wide in application range, and has the performances of oil-water separation, self-cleaning and excellent dye compatibility.

The invention relates to the technical field of road maintenance, and provides a road preventive maintenance coating material and a preparation method thereof. The curing coating material comprises furfural extract oil, SBS modified asphalt, stearoyl chloride modified rubber powder, lignin, fine aggregate and a phosphate coupling agent. And the stearoyl chloride modified rubber powder has good elasticity and flexibility, and can form an elastic network in the coating, so that the possibility of forming ruts is reduced. Lignin enhances the overall strength and rigidity of the coating, and under the combined action of lignin and rubber powder, the rut resistance of the coating is improved. And the fine aggregate also forms rough textures on the surface of the coating, so that the friction force between the tire and the coating is increased. The phosphate coupling agent ensures good combination of the components, so that the components can synergistically exert anti-rutting and anti-skid effects, the coating can be kept flat in a long-term use process, and the service life of the coating is prolonged.

The invention relates to the field of aromatherapy wax, and particularly discloses environment-friendly rod wax persistent combustion control wax and a preparation process thereof.The environment-friendly rod wax persistent combustion control wax comprises environment-friendly rods and mixed wax, and the mixed wax is prepared from, by weight, 60-80 parts of vegetable wax, 5-12 parts of stearic acid, 5-10 parts of palm wax, 5-20 parts of plant essential oil, 0.5-1.0 part of lecithin, 0.1-0.3 part of antioxidant and 0.2-0.5 part of lubricant. The preparation method of the environment-friendly rod comprises the following steps: drying microcrystalline cellulose to constant weight, removing bound water, adding activated cellulose, stearoyl chloride and pyridine into methylbenzene under the protection of nitrogen, carrying out reflux reaction, immersing cotton threads, and carrying out vacuum drying to obtain the environment-friendly rod. The environment-friendly rod wax disclosed by the invention is durable in combustion and wax control, and long in fragrance diffusion time.

The invention discloses a preparation method and application of modified resin based on lignite, and belongs to the technical field of drilling fluid. The preparation method comprises the following steps: adding lignite resin, modified cellulose, modified cardanol and hydrolyzed polyacrylonitrile ammonium salt into deionized water, stirring at 60-80 DEG C for 2-4 hours, drying, and crushing to obtain the lignite-based modified resin. A quaternary ammonium group can be strongly adsorbed on the edge of a clay particle with negative electricity through electrostatic interaction, so that the filtrate loss reduction capability of the modified resin can be improved, stearoyl chloride and a carbon long chain of cardanol can be wound and crosslinked, a hydrophobic association effect is achieved, the salt resistance of the modified resin is enhanced, and a viscosity reduction effect is achieved; the biphenyl structure in the modified cardanol can improve the high-temperature resistance of the modified resin, and carboxyl can be complexed with high-valence metal ions in the drilling fluid, so that the salt resistance of the modified resin is enhanced.

The invention relates to the technical field of deodorants, in particular to an antibacterial deodorant and a preparation method thereof. The antibacterial deodorant is prepared from a stearic acid modified melamine-formaldehyde prepolymer, a silver modified melamine-formaldehyde prepolymer and calcium carbonate through emulsion suspension polymerization. The stearic acid modified melamine-formaldehyde prepolymer is obtained by mixing modified melamine synthesized by melamine and stearoyl chloride with a formaldehyde aqueous solution, and the silver modified melamine-formaldehyde prepolymer is obtained by mixing silver amide particles with the formaldehyde aqueous solution. The antibacterial deodorant prepared by the invention has an efficient deodorization effect and excellent antibacterial performance.

The invention belongs to the technical field of polyethylene films, and particularly provides a high-resistance polyethylene film and a production process. The high-resistance polyethylene film is prepared from the following raw materials in parts by weight: 70-80 parts of linear low-density polyethylene, 3-6 parts of modified silicon dioxide gel and 2-4 parts of maleic anhydride grafted polyethylene. The modified silicon dioxide gel is prepared by compounding aminated cellulose and a silicon source to prepare aerogel and then modifying the aerogel by using stearoyl chloride. The high-resistance polyethylene film prepared by the invention has the advantages of good barrier property and good mechanical property.

The invention discloses a preparation method of a nano-scale compatibilizer for a PE-based wood-plastic composite material, which comprises the following steps: by taking cellulose as a modification object, stearoyl chloride containing acyl chloride groups with long carbon chains and high reaction activity as a modification monomer, and ionic liquid such as 1-allyl-3-methylimidazole chloride and the like as a solvent and a reaction medium, carrying out homogeneous reaction to obtain the nano-scale compatibilizer for the PE-based wood-plastic composite material. Stearoyl chloride modified cellulose with different substitution degrees is prepared; the stearoyl chloride esterified nano-crystalline cellulose is prepared from stearoyl chloride esterified nano-crystalline cellulose, then regeneration conditions are controlled, the functionalized nano-crystalline cellulose is obtained, the prepared stearoyl chloride esterified nano-crystalline cellulose can be used as a compatibilizer of a PE / wood flour composite material (WPC), the melt flowability of the WPC and the interfacial compatibility and mechanical properties among all components of the WPC are remarkably improved, and the effect is superior to that of a traditional compatibilizer.