53 results about "Stearic acid" patented technology

The invention provides a wax-based binder for a compacting process in powder metallurgy as well as a preparation method and an application thereof. The binder consists of the following components by mass percent: 60 to 80 percent of solid paraffin, 3 to 10 percent of liquid paraffin, 1 to 10 percent of naphthalene, 2 to 9 percent of polyethylene vinyl acetate, 4 to 15 percent of polyolefin and 1 to 10 percent of stearic acid. The components of the binder are good in compatibility, the rheological property is good, the solvent degreasing rate is high, the retraction property is moderate, the degreasing blank is few in flaws, and the conformality is good; the binder also has the characteristics of cleanliness, low residue, little pollution and the like.

The invention discloses a wear-resistant rubber sole. The wear-resistant rubber sole comprises the following raw materials in parts by weight: 30 parts of natural rubber, 30 parts of butadiene styrene rubber, 150 parts of butadiene rubber, 150 parts of white carbon black, 90 parts of oil, 12 parts of zinc carbonate, 2.8 parts of stearic acid, 3 parts of DM, 0.75 parts of M, 0.26 parts of TMTM, 3.8 parts of insoluble sulfur, 2 parts of an anti-aging agent, 1.5 parts of anti-fogging agent, 3 parts of tackifying resin and 14 parts of PEG. The invention further provides a preparation method of the wear-resistant rubber sole. Compared with the prior art, the wear-resistant rubber sole has the advantages as follows: the formulation is environment-friendly; the amount of various components can be adjusted; through the addition of the anti-fogging agent, a protective film is formed on the surface of the wear-resistant rubber sole, thus effectively preventing a blooming phenomenon and delaying the aging of the rubber sole; through the addition of the butadiene rubber as well as through reasonable matching of the natural rubber, the butadiene rubber and the butadiene styrene rubber, not only is the wear resistance improved, but also the cost is reduced, thus obtaining good physical properties and economic benefits.

The invention relates to a high-temperature iron-based zeolite molecular sieve honeycomb type denitration catalyst and a preparation method thereof, and belongs to the technical field of atmospheric pollution treatment technologies and environmentally friendly catalyzing materials. The preparation method comprises the following steps: mixing ferrous salts with ferrite; synthesizing a zeolite molecular sieve, natural zeolite molecular sieve powder, attapulgite clay or kaolin, glass fibers, an organic binding agent, wood pulp or sesbania cannabina powder, stearic acid and glycerinum; and carrying out mixing, ageing, extrusion forming, drying and roasting to obtain the iron-based zeolite molecular sieve honeycomb type denitration catalyst. According to the catalyst, the zeolite molecular sieve and natural raw mineral materials which have excellent thermal stability are used as carriers, and the running stability, the sintering resistance and the mechanical strength of the catalyst in a high-temperature environment are improved. The obtained honeycomb type denitration catalyst has good water resistance and sulfur poisoning resistance, and the conversion ratio of oxynitride is greater than 90% under the conditions that the temperature is in the high-temperature range of 400-600 DEG C and the air speed is 10,000 h<-1>.

This invention relates to a method for preparing nanoscale perovskite-type LaCoO3 by stearic acid gel combustion. The method comprises: (1) weighing lanthanum nitrate, cobalt nitrate and stearic acid at a mol ratio of 1 : 1 : (9.5-12.0); (2) heating in an oil bath, dissolving stearic acid, adding lanthanum nitrate and cobalt nitrate, magnetically stirring at 110-120 deg.C and reacting to obtain a gel; (3) combusting at 450 deg.C in a muffle furnace, taking out the product, milling and torrefying at 850 deg.C for 3 h in the muffle furnace to obtain 10-35 nm perovskite-type LaCoO3. The method is simple and suitable for mass production.

The invention relates to a composite underwater sound transmission rubber material and a preparation method thereof. A component A is prepared through steps of plasticating natural rubber, then adding into an internal mixer for mixing, adding metallic oxide, inorganic filler, active agent and accelerator for mixing, and discharging sheets by an open mill and testing; a component B is prepared through steps of plasticating chloroprene rubber, then adding into the internal mixer for mixing, then sequentially adding stearic acid, antiager, carbon black, inorganic filler and softener for mixing, adding sulphur for mixing, discharging sheets and cooling down; the composite underwater sound transmission rubber material is prepared through steps of mixing the component A and component B according to proportion of 1:1, packaging into triangle, thinning, discharging sheets, sampling for sulfuration test, and sulfurizing at relatively low temperature. The acoustic impedence of the material and acoustic characteristic impedence of water are well matched, the sound attenuation coefficient of sound wave transmitting in sizing material is low, the material has good hydrolytic resistance and silicone oil resistance; the material can be stored for long time, is safe to operate, has high underwater sound transmission performance, and can be sulfurized at low temperature so that the contradiction between low temperature sulfurization and normal temperature storage is relieved.

The invention belongs to the chemical technical filed, relating to production formula of an anti-aging rubber belt, which is composed of neoprene adhesive, natural adhesive, sulfur, vulcanizing agent DTDM, zinc oxide, antioxidant 4010Na, antioxidant ODA, stearic acid, paraffin, high wear-resistance carbon black, accelerator DM, accelerator Na-22 and engine oil. The preparation method is that the materials are face smelted in a face smelting machine. Then certain weight of the face smelted rubber compound is put into a vulcanizer to be vulcanized. The product is obtained after the vulcanization. The product has the advantages of low cost, anti-aging, long service life and no blooming on the surface.

The present invention relates to a rubber composition, and discloses a high-damping rubber composition and a preparation method therefor. A high-damping rubber composition comprises the following components: 100 parts by mass of diene rubber, 2-10 parts by mass of stearic acid, 2-40 parts by mass of an antioxidant, 2-20 parts by mass of zinc oxide, 2-10 parts by mass of phenolic resin, 100-140 parts by mass of a reinforcing agent and 2-5 parts by mass of a sulfurizing agent. Under the joint action of the antioxidant and the phenolic resin or the like, the composite material obtained by the diene rubber in the present invention has a good vibration reduction damping performance, while the mechanical performance, the storage modulus and the loss modulus are improved. A dynamic mechanical performance curve of the composite material moves to a direction of high temperature, and the rubber composition has a relatively wide effective damping temperature range.

The invention discloses a formula of a fluororubber-ethylene propylene rubber mixing rubber compound, which comprises the following components in parts by weight: 50-70 of ethylene propylene rubber, 30-50 of fluororubber, 8-15 of nitrile buna rubber, 2.5-10 of magnesium oxide, 5-10 of zinc oxide, 0.1-0.5 of accelerant M, 0.2-1 of stearic acid, and 0.2-1 of sulphur. The fluororubber-ethylene propylene rubber mixing rubber compound obtained according to the invention is capable of simultaneously having high medium-resistant property and low-temperature-resistant property; simultaneously, proper elasticity can also be kept.

The invention discloses a fresh flower preservative and a preparation method thereof. The fresh flower preservative is prepared from the following components in parts by weight: 70-80 parts of ethanol, 40-50 parts of ethyl pyruvate, 10-20 parts of citric acid, 8-15 parts of sodium citrate, 3-8 parts of sodium thiosulfate, 1-5 parts of stearic acid, 1-5 parts of salicylic acid, 0.5-2 parts of potassium sulphate, 1-5 parts of monopotassium phosphate, 5-10 parts of thiourea and 30-40 parts of water. The preparation method comprises the following steps: mixing ethanol and water, heating to 30-35 DEG C, adding with ethyl pyruvate, stirring for 10-20 min, then adding the other components, stirring for mixing uniformly, cooling to room temperature, and sealing for storage. With the fresh flower preservative, the flowering phase can be prolonged by 15-20 days on average, and meanwhile, fresh flowers with damaged branches, buds and leaves can bloom into bright flowers, so that the utilization ratio of the fresh flowers is greatly improved.

The invention discloses a temperature-sensitive wall material. The temperature-sensitive wall material comprises a temperature-sensitive material modified polymer wall material, wherein the temperature-sensitive material is polyvinylpyrrolidone, glycerophosphate, stearic acid, galactose-removed xyloglucan or gelatin-chitosan, poly(N-isopropylacrylamide) and hydroxybutyl chitosan. The temperature-sensitive wall material releases drugs at different temperatures, the drug release time is flexibly controlled, the phytotoxicity is reduced, and the drug action time is prolonged. The temperature-sensitive wall material can be applied to whole-course pesticide application protection of the growth cycle of crops, the chemical application frequency is reduced, and the crop management efficiency is improved. The invention also provides a corresponding microcapsule and a preparation method.

Polyol and fatty acid is reacted under the catalysis of metal oxide to obtain polyol fatty acid ester. The polyol is glycol or polyglycol; the fatty acid is lauric acid, palmitic acid, stearic acid, oleic acid, etc.; and the esterification catalyst is metal oxide. The production process is simple, reliable and stable. During the process, the metal oxide is first reacted with fatty acid to produce fatty acid soap, and the fatty acid soap then catalyzes the esterification. The reaction is completed under the homogeneous phase condition and the fatty acid soap, normally as the processing assistant for rubber, needs no separation from the product. The product of the present invention is used as dispersant for mixing rubber to raise the inherent quality and outer appearance of rubber product.

The invention discloses a rubber tube and a preparation method thereof, belonging to the technical field of paints. The rubber tube is prepared from the following raw materials in parts by weight: 60-70 parts of epichlorohydrin rubber, 15-20 parts of fast-extruding carbon black, 1-2 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 2-4 parts of N,N'-diphenyl-p-phenylenediamine, 3-5 parts of titanium white, 5-8 parts of antimony trioxide, 4-5 parts of decabromodiphenylethane, 5-10 parts of calcium hydroxide, 0.5-1 part of stearic acid, 8-12 parts of talcum powder, 8-12 parts of silicon dioxide and 1-5 parts of magnesium oxide. Compared with the rubber tube in the prior art, the rubber tube disclosed in the invention has the advantages of favorable high temperature resistance, favorable low temperature resistance, favorable wear resistance, favorable aging resistance and the like, and is environment-friendly.

The invention discloses tire inner liner rubber and a preparation method thereof. The inner tire liner rubber comprises 70-90 parts of brominated butyl rubber, 10-15 parts of natural rubber, 5-10 parts of silane-terminated polyether resin, 50-70 parts of carbon black, 3-6 parts of diatomite, 2-4 parts of calcium oxide, 2-4 parts of zinc borate, 1-3 parts of stearic acid, 3-6 parts of naphthenic oil, 3-6 parts of aromatic hydrocarbon oil, 2-5 parts of anti-aging agent, 1-2 parts of accelerant and 0.2-0.8 part of insoluble sulfur, wherein the main chain of the silane-terminated polyether resin is polypropylene oxide, and dimethoxy methyl silane or trimethoxy silane are used for terminating; the natural rubber is SMR20 or SMR10; the accelerant is accelerant DM or accelerant DPG; the anti-aging agent is anti-aging 4020, anti-aging agent RD or anti-aging agent 3100. The tire inner liner rubber and the preparation method thereof have the advantages that the silane-terminated polyether resin is added into the tire inner liner rubber; by the preparation method, the problem that the carbon black and small materials are uneven in dispersion can be solved, the service life of the tire inner liner rubber is prolonged, and the safety performance of the tire inner liner rubber is increased.

The invention discloses a novel powder metallurgical gear. The novel powder metallurgical gear is prepared from iron powder, copper powder, molybdenum powder, vanadium powder, nickel powder, yttrium powder, aluminum powder, magnesium powder, cobalt powder, lead powder, steel slag powder, cupola slag powder, ferroalloy slag powder, modified tree ash powder, graphite powder, epoxidized butyl stearate, silicone oil, methylcellulose, aluminum stearate, polyethylene glycol, ethylene bisstearamide, stearic acid, carbon fibers, glass fibers, boron nitride, epoxy propoxy propyl trimethoxysilane, silica, manganese sulfide, acrylate, an inhibitor, a binder, an enhancer, a cutting agent, a lubricant, a coupling agent and a dispersion agent. According to the novel powder metallurgical gear, through the specific composition proportion, the novel powder metallurgical gear is even in overall density, high in density, high in ductility and area percentage reduction, good in wear resistance, strength and hardness, high in material utilization rate and suitable for quickly producing high-performance gears on a large scale.

The invention discloses aging-resistant polyvinyl chloride plastic. The aging-resistant polyvinyl chloride plastic is prepared from components in parts by weight as follows: 50-70 parts of polyvinyl chloride resin, 30-50 parts of calcium carbonate powder, 3-6 parts of a plasticizer, 2-4 parts of a stabilizer, 2-5 parts of an ACR aid, 1-2 parts of stearic acid, 1-3 parts of nano titanium dioxide, 3-5 parts of an ultraviolet light absorber, 2-3 parts of an antioxidant, 1-2 parts of a coupling agent and 0.5-4 parts of a colorant. The invention further discloses a preparation method of the aging-resistant polyvinyl chloride plastic. Filler, a lubricant, the colorant and other additives are stirred with polyvinyl chloride at the high speed, so that all the additives are uniformly mixed, and a plastic product is uniformly colored and has good antibacterial and anti-aging effects. Meanwhile, the stirring temperature is lower than 100 DEG C, the mixture can be directly added to an extruder or an injection molding machine after stirring, a high-temperature granulation process is omitted, the production process is simplified, and decomposition polyvinyl chloride and release of hydrogen chloride gas can be reduced.

The invention discloses wear-resistant and high-temperature resistant capacitor aluminum case film coating paint and a preparation method thereof. The wear-resistant and high-temperature resistant capacitor aluminum case film coating paint is mainly obtained through mixing and stirring compounds A and compounds B in raw materials according to certain weight parts, wherein the compounds A consist of polyurethane polyatomic alcohol, ethyl ketone, paraffin, isopropanol, polymethyl-benzene gadoleic acid methyl ester and attapulgite, and the compounds B consist of phenolic resin, dimethyl silicone polymer, acrylic ester copolymer modifying agents, straw ashes, silane coupling agents, 6-tertiary butyl-3-methylphenol, stearic acid and tetramethylsilane. The wear-resistant and high-temperature resistant capacitor aluminum case film coating paint has the advantages that the recipe is reasonable, the preparation method is simple, the curing effect on a capacitor aluminum case is good, a capacitor is effectively protected, the prepared film coating paint has the heat resistance performance and the wear resistance performance, and the service life of the capacitor is prolonged.

The invention provides a preparation method of a high-strength tire curing bladder, and relates to the technical field of tire curing bladder production and processing. In a component of the tire curing bladder, raw rubber comprises butyl rubber and brominated butyl rubber; a filler comprises carbon black, acetylene carbon black, graphite and aluminum oxide; an active agent is zinc oxide master batch particles; a processing aid comprises stearic acid and paraffin; a vulcanizing agent comprises vulcanized resin and sulfur; wherein the unsaturation degree of the butyl rubber is 0.5-2%, and the brominated butyl rubber contains 1.5-2.5% of bromine. The preparation method comprises following steps: carrying out three-stage rubber mixing to process a rubber sheet, and then injecting and vulcanizing to obtain the tire curing bladder. Compared with the prior art, the invention has the advantages that the butyl rubber and the brominated butyl rubber are used as raw rubber, and an adopted rubberextruder is three-stage rubber mixing equipment, so that high-temperature mixing time is shortened, the stability of the brominated butyl rubber is maintained, the purpose of uniform mixing is achieved, and the vulcanization time can be shortened while the strength is improved.

The invention relates to a high-strength marine rubber fender. Rubber raw materials consist of the following components in parts by weight: 70-90 parts of natural rubber 1#, 30-50 parts of chloroprene rubber 21, 2-3 parts of stearic acid, 1-2 parts of paraffin, 15-25 parts of hard carbon black, 2-3 parts of anti-aging agent DTPD, 2-4 parts of vulcanizing agent TRA, 20-30 parts of calcium carbonate, 3-5 parts of zinc oxide, 4-5 parts of magnesium oxide, 2-5 parts of Vaseline, 0.3-0.5 part of accelerant DM, 1.1-1.3 parts of accelerant TT, 0.9-1.1 parts of anti-aging agent 4010 and 0.9-1 part of anti-aging agent D, wherein the anti-aging agent DTPD is domestically called an anti-aging agent 3100 which has the Chinese name of N,N'-xylyl-p-phenylenediamine mixture, the vulcanizing agent TRA is also called DPTT which has the Chinese name of tetra-sulfide bis(pentamethylene) thiuram and the molecular formula of C12H20N2S4, the accelerant DM has the Chinese name of 2,2'-dithio-dibenzothiazole and the molecular formula of C14H8N2S4, the accelerant TT has the Chinese name of disulfide tetramethyl thiuram and the molecular formula of C6H12N2S4, the anti-aging agent 4010 has the Chinese name of N-isopropylbenzene-N-phenylene-p-phenylenediamine, and the anti-aging agent D has the Chinese name of N-phenyl-2-naphthylamine and the molecular formula of C16H13N. According to the high-strength marine rubber fender, the tensile breaking strength of the rubber fender is improved through changing the proportions of a rubber material, a polar material and polysulfur bonds.

The invention discloses an anti-corrosion power protection pipe which is characterized by being prepared from the following raw materials in parts by weight: 100-130 parts of polyvinyl chloride, 2-4 parts of magnesium hydroxide, 0.1-0.4 part of stearic acid, 6-10 parts of calcium carbonate, 0.2-0.5 part of sodium lignosulfonate, 1-2 parts of nano antimony trioxide, 0.5-1 part of sodium oleate, 0.4-1 part of a silane coupling agent kh550, 0.5-0.8 part of hexamethylphosphoramide, 1-2 parts of a quartz powder, 2-3 parts of wollastonite fiber, 1-2 parts of an anti-aging agent 4010, 2-3 parts of urea, and a proper amount of water. The added hexamethylphosphoramide, quartz powder, wollastonite fiber and urea are mixed under certain conditions, so that the dispersion, compatibility and the like of a filler in PVC are promoted to a great extent, corrosion resistance, aging resistance, flame retardancy, and high mechanical strength and toughness are also improved, and the service life of the anti-corrosion power protection pipe is prolonged.

The invention discloses hair shampoo which is prepared from the following components in parts by weight: 50-70 parts of pure water, 6-8 parts of an emulsifier, 4-6 parts of cocoamidopropyl betaine, 5-7 parts of stearic acid, 0.1-0.3 part of lavender essential oil, 0.1-0.3 part of chamomile essential oil and 0.2-0.4 part of peanut essential oil. The hair shampoo can protect and retain hair, can also boost the mind, and has an antibacterial function.

The invention discloses a decorated curtain. The decorated curtain comprises a cord fabric matrix, starlike patches and a crescent patch, wherein the starlike patches and the crescent patch are glued on the surface of the cord fabric matrix respectively; the cord fabric matrix is made from textile fabrics or plastic films; the starlike patches and the crescent patch are prepared by clipping fluorescent slices; the fluorescent slices are prepared by mixing polyethylene, fluorescent powders, phthalate, stearic acid and antioxygens; the weight percentage of the polyethylene is 75% of the fluorescent slices; the weight percentage of the fluorescent powders is 4% of the fluorescent slices. According to the decorated curtain provided by the invention, by the adoption of the method, the starlike patches and the crescent patch can absorb sunlight in the daytime and lamplight at night, give out fluorescent light in the dark, and build a peculiar scenery that stars and the moon are close at hand; the decorated curtain is suitable to be used as a curtain in a child's room.

The invention discloses a flame-retardant PVC threading pipe and a preparation method thereof. The threading pipe is made of a flame-retardant PVC material, and the flame-retardant PVC material comprises the following components in parts by weight: 80-120 parts of PVC, 20-30 parts of a glaze, 15-25 parts of light calcium carbonate, 4-6 parts of a stabilizer, 0.1-0.3 parts of stearic acid, 0.1-0.3parts of PE wax, and 8-10 parts of CPE; The preparation method comprises the following steps of: S1. preparation of the glaze, S2. kneading of the glazed flame-retardant PVC material, and S3. plasticized granulation of the glazed flame-retardant PVC material. The glazed flame-retardant PVC material provided by the invention has A-class flame-retardant property, can effectively prevent the flame-retarding and dripping of the threading pipes, has the heat insulation effect, protects the cable inside the threaded pipe from short circuit, and reduces property damage.

The invention discloses a nose mask facilitating pore shrinking. The nose mask comprises olive oil, alginic acid, watermelon peel powder, jasmine flower ethereal oil, alcohol special for cosmetics, terpinyl acetate, stearic acid and the like. The nose mask has no toxic or side effects, is remarkable in pore shrinking effect, and guarantees smooth skin.

The invention relates to a heat-resistant and wear-resistant natural rubber composite material and a preparation method thereof, belongs to the technical field of composite materials, and aims to solve the technical problem of poor wear resistance of natural rubber in the prior art and further improve the heat resistance. The composite material provided by the invention is prepared from followingraw materials in parts by weight: 100 parts of natural rubber, 2 to 4 parts of polyvinylidene fluoride, 5 to 8 parts of epoxy resin, 1 to 3 parts of sulfur, 0.5 to 2 parts of a vulcanization accelerator, 0.5 to 2 parts of zinc oxide, 1 to 2 parts of stearic acid, 2 to 5 parts of an anti-aging agent, 1 to 3 parts of shell powder, 0.5 to 2 parts of silicone stone powder, 0.5 to 1 parts of graphite,1 to 2 parts of calcium carbonate and 2.5 to 3.5 parts of polytetrafluoroethylene powder. The composite material has superior wear resistance and heat resistance.