26 results about "Microcrystalline wax" patented technology

This utility model discloses a continuous deoiling device for microcrystalline wax, including a sealed wax melting tank and a deoiling device. The sealed wax melting tank transports the mixture to the inside of a spiral plate heat exchanger via a variable frequency pump. The spiral plate heat exchanger is connected to a high and low temperature integrated machine, which can circulate and cool the coolant flowing inside the spiral plate heat exchanger. The spiral plate heat exchanger transports the crystallized mixture to the inside of a centrifuge. The centrifuge separates the crystallized wax from the filtrate through centrifugal action, and the separated filtrate enters the sealed filtrate tank for recycling. This utility model can achieve continuous deoiling of microcrystalline wax through the synergistic effect of components such as the sealed wax melting tank, variable frequency pump, spiral plate heat exchanger, and centrifuge. At the same time, the curved structure in the channel of the spiral plate heat exchanger forces the fluid to form a strong spiral flow. The high flow velocity and turbulence can scour the wall surface and prevent wax crystals or impurities from depositing.

The application belongs to the technical field of precision casting, and particularly relates to a high-viscosity and high-strength precision casting adhesive wax and a preparation method thereof. The adhesive wax comprises the following components: 30-40 parts of paraffin wax, 16-24 parts of microcrystalline wax, 25-30 parts of petroleum resin, 8-14 parts of rosin resin, 5-10 parts of EVA, 2-5 parts of LDPE and 0.1-2 parts of additives; wherein the LDPE is composed of two kinds of LDPE with different melt indexes. By introducing the petroleum resin, rosin resin, ethylene-vinyl acetate copolymer (EVA) and low-density polyethylene (LDPE) into the paraffin wax and microcrystalline wax base system, and controlling the proportion between the resin system and the polyolefin reinforcing system, the adhesive wax has high viscosity and hardness at 100 DEG C, and the bending strength is improved. Thus, the comprehensive performance of the adhesive wax is achieved, i.e., the adhesive wax is not easy to sag at high temperature, is not easy to be pressed at room temperature, and is not easy to crack under stress.

The present application relates to the technical field of rubber processing aids, and particularly relates to a dispersant for rubber, a preparation method and application thereof.The dispersant for rubber comprises the following raw materials in parts by weight: 20-30 parts of stearic acid, 5-10 parts of microcrystalline wax, 1-5 parts of monoglyceride fatty acid ester, 2-7 parts of dispersing aid, and 1-5 parts of modified sodium lignosulfonate.The dispersant for rubber can improve the wetting and coating capacity of fillers, reduce the Mooney viscosity of rubber compounds, and improve the flowability of mixing and processing.In addition, the dispersant for rubber can improve the dispersion uniformity of fillers in the rubber system, and improve the interfacial bonding strength between fillers and rubber.Meanwhile, the dispersant for rubber can effectively avoid the migration and blooming of small molecule additives, and improve the appearance stability of rubber products.

The application belongs to the technical field of adhesives and sealants, and specifically provides a sealing wax as well as a preparation method and application thereof. The sealing wax comprises the following components in parts by mass: microcrystalline wax 40-60 parts, polyethylene wax 1-5 parts, ethylene-vinyl acetate copolymer 3-8 parts, low-molecular-weight polyisobutylene 2-5 parts, medium-molecular-weight polyisobutylene 2-5 parts, tackifying resin 15-20 parts, and flame retardant 3-5 parts. The number-average molecular weight of the low-molecular-weight polyisobutylene is less than 5000, and the viscosity-average molecular weight of the medium-molecular-weight polyisobutylene is 10000-40000. Through the design and mutual compounding of the components, the sealing wax has a high melting point, a low water absorption rate, a high volume resistivity, good high-temperature and low-temperature resistance, and strong waterproof and moisture-proof performance, high mechanical strength and toughness, high insulation, high transparency, and strong sealing effect, and has good flow leveling property and good flame retardant performance, and can meet the strict use requirements of high-end electronic equipment.

This utility model belongs to the field of silicon core tube technology, and in particular to a wear-resistant silicon core tube for communication. It includes a silicon core layer, and a repair layer is fixedly sleeved on the outer surface of the silicon core layer. The repair layer includes a first repair ring and a second repair ring. The first repair ring is composed of a plastic film containing liquid wax, and the second repair ring is composed of a plastic film wrapped with microcrystalline wax. Multiple first and second repair rings are alternately distributed to form the repair layer. This wear-resistant silicon core tube for communication, by installing the repair layer between the outer surface of the silicon core layer and the inner wall of the protective layer, utilizes the design of the first and second repair rings. When the silicon core tube is worn, the high temperature generated by friction dissolves the wax in the first and second repair rings and causes it to seep out through the damaged area. Then, through interaction with the silicone in the catalyst layer, it solidifies and seals, preventing liquid from entering the silicon core layer. This provides a convenient wear-resistant sealing protection for the silicon core tube.

The application discloses a kind of for promoting walnut incision healing and preparation method and application thereof, it is related to walnut cultivation protection technical field.The healing paste is by elastic film-forming base phase 12-35%, high water absorption / water release humidity particle phase 3-12%, hydrophobic water-blocking microphase 5-22%, rheological and interface control phase 1-8%, osmotic pressure and water activity adjustment phase 5-20% and the rest amount of water and preservative etc.composition according to mass percentage;Film-forming base phase includes aqueous polyurethane-acrylate copolymer emulsion and modified polyvinyl alcohol or polyvinyl alcohol-starch blend, humidity particle phase includes crosslinked sodium carboxymethyl cellulose and crosslinked starch or alginate microparticles, hydrophobic microphase includes beeswax, microcrystalline wax, vegetable oil and rosin resin.By preparing each functional phase in turn and assembling in aqueous system, obtain the healing paste suitable for walnut incision protection under different climatic conditions.

The application belongs to the technical field of functional coating materials, and particularly relates to a microcapsule encapsulated repairing agent, an anti-icing coating and a preparation method and application thereof. The microcapsule encapsulated repairing agent is prepared by taking a complex of epoxy resin and microcrystalline wax as a core material, wrapping the core material with an inorganic nanomaterial-graphene composite material to obtain a primary microcapsule, and then performing surface modification on the primary microcapsule with dopamine to form a photo-thermal modification layer. The microcapsule encapsulated repairing agent has a high-density micro-nano protrusion rough structure, which significantly increases the specific surface area of the microcapsule, greatly improves the effective surface area of photo-thermal conversion, and also helps to improve the bonding force between the microcapsule and the coating matrix.

The application relates to the technical field of cosmetics, in particular to a water-in-oil system makeup primer and a preparation method thereof. The water-in-oil system makeup primer comprises the following components in parts by weight: cosmetic-grade purified water, cetyl PEG / PPG-10 / 1 dimethicone, dimethicone, isononyl isononanoate, synthetic wax, microcrystalline wax, glycerol, 1,3-propanediol / octyldodecanol / ethylhexylglycerin, butylene glycol, sodium chloride and a polyoxyethylene (20) sorbitan monolaurate-polyoxypropylene (4) sorbitan monolaurate compound. The water-in-oil system makeup primer provided by the application can realize 80% high-aqueous-phase stable bearing, provide sufficient moisturizing reserves for dry skin, realize instant film forming and water locking during smearing, improve the water retention rate to more than 85%, solve the problem of water supplement efficacy attenuation, thereby realize the dual effects of instant water locking and long-acting moisturizing, and resolve the contradiction between water locking and skin feeling.

The application discloses a trinitrotoluene-based composite melt-cast explosive and a preparation method and application thereof, wherein the trinitrotoluene-based composite melt-cast explosive is prepared from trinitrotoluene, a physical insensitive agent and a bidirectional functional structure directing agent according to certain mass percentage components; the physical insensitive agent is microcrystalline wax, and the bidirectional functional structure directing agent is sorbitan monooleate; the sorbitan monooleate is used for synchronously realizing interface compatibility and interface combination between the trinitrotoluene and the microcrystalline wax, and regulating the crystallization behavior of the trinitrotoluene. The melt-cast explosive realizes high uniformity and high consistency of engineering charging quality, and the mechanical, safety and detonation performances are synergistically enhanced.

This invention discloses a butyl rubber blend resistant to multiple solvents and its preparation method, belonging to the field of rubber preparation technology. First, brominated butyl rubber is added to a mixer for plasticizing. Then, magnesium oxide, stearic acid, antioxidant RD, antioxidant 4010NA, and a portion of microcrystalline wax are added to the mixer and mixed. Next, fast-extrusion carbon black and thermally pyrolyzed carbon black are added and mixed. Epoxidizing crosslinking agent, the remaining microcrystalline wax, and processing aids are then added and mixed. The mixture is transferred to a two-roll mill and sheeted to obtain masterbatch. Finally, the masterbatch is added to the two-roll mill, rolled, and then vulcanizing resin, zinc oxide, accelerator CZ, and sulfur are added sequentially. Sheeting yields the butyl rubber blend resistant to multiple solvents. The butyl rubber blend provided by this invention possesses excellent resistance to various solvents and superior physical and mechanical properties, meeting the technical requirements of foreign sample comparison tests.

This invention discloses a double-sided precision-printed anti-counterfeiting cigarette inner liner paper and its preparation method. The inner liner paper comprises a directional light-transmitting fiber network structure paper base, a front negative printing layer, a back positive printing layer, and a composite layer. The paper base is manufactured using a three-layer papermaking process. The middle layer undergoes pore-forming treatment to form directional microporous channels with a pore size of 5-15 μm, achieving a light transmittance of 88-92%. The front negative image is printed with high-penetration ink, with a penetration depth of 25-35 μm; the back positive image is printed with controlled-penetration ink containing microcrystalline wax and hydrophobic nano-silica, with a penetration depth of 8-15 μm. Dynamic registration control is achieved using a dual-sided CCD vision system and a servo correction device, achieving a registration accuracy of ≤0.12 mm laterally and ≤0.15 mm longitudinally. The composite layer uses a fluorinated acrylate system with a refractive index of 1.44-1.46, matching the paper base. When observed under light, the positive and negative patterns are precisely aligned, with clear layers, high anti-counterfeiting recognition, and a production qualification rate of 98%, making it suitable for high-end tobacco packaging.

This application relates to the technical field of leather care products, and discloses a leather care cream formula containing camel oil and its preparation method. The raw materials of the leather care cream formula include camel oil, carnauba wax, microcrystalline wax, isopropyl myristate, propylene glycol monostearate, cetearyl alcohol polyether-20, deionized water, xanthan gum, and an antielectrolyte buffer phase composed of betaine and erythritol. In the system, propylene glycol monostearate is arranged and assembled to form a layered mesoscopic framework, and the antielectrolyte buffer phase is anchored on the outer interlayer interface of the framework. During preparation, high-temperature shear emulsification, isothermal injection of the buffer phase at the critical temperature of mesoscopic phase transition, and rapid quenching and defoaming are performed sequentially. This invention solves the problems of easy demulsification and oil precipitation when the care cream comes into contact with residual metal ions on leather, and easy dehydration and macroscopic phase separation under high temperature storage by utilizing the dual effects of electrostatic shielding and steric hindrance, thereby improving the stability of the product.

The present invention aims to provide a water-repellent paper that exhibits excellent water repellency, water friction resistance, and blocking resistance even with a small mass per unit area of ​​the water-repellent layer. [Solution] The water-repellent paper has a paper base material and a water-repellent layer, the water-repellent layer contains an acrylic resin and a hydrocarbon wax, and the mass of the water-repellent layer per unit area is 5 g / m². 2 The following is a water-repellent paper: The water-repellent paper wherein the hydrocarbon wax is at least one selected from the group consisting of paraffin wax, microcrystalline wax, carnauba wax, and polyethylene wax.

This invention belongs to the field of new material preparation technology, specifically disclosing a high-wear-resistant rubber track material and its preparation method. The high-wear-resistant rubber track material, by weight, is prepared from the following raw materials: 60-100 parts nitrile rubber, 20-50 parts NV rubber-plastic alloy, 30-80 parts silica, 10-30 parts kaolin, 5-20 parts dioctyl terephthalate, 1-8 parts zinc oxide, 0.5-2 parts stearic acid, 0.5-5 parts antioxidant, 0.5-2 parts microcrystalline wax, 1-5 parts PEG4000, 0.5-5 parts coupling agent, 0.5-2 parts vulcanizing agent, and 2-8 parts accelerator. The rubber track material provided by this invention is mainly composed of NBR+PVC blend material. By combining functional additives and optimizing the preparation process, the prepared material is suitable for making tracks, meeting the requirements of wear resistance, no black mark, and excellent overall performance.

This invention relates to a thickness-fixed die material for investment casting and its preparation method, as well as an investment casting method, specifically relating to the field of investment casting. The thickness-fixed die material for investment casting comprises: microcrystalline wax, polyolefin wax, ethylene-vinyl acetate copolymer (EVA), elastomer, and petroleum resin. The thickness-fixed die material for investment casting provided by this invention achieves simultaneous improvement in hardness and toughness by utilizing the synergistic effect between the components within the die material, resulting in a material that is both hard and tough. It can bend naturally when the wax sheet is bent without creases or breakage, exhibiting excellent performance. The resulting die material has a penetration (25℃, 0.1mm) ≤ 8.5 and a bending strength ≥ 10.8MPa.

This invention relates to a glass fiber reinforced thermoplastic polymer composition comprising a core and a thermoplastic polymer sheath surrounding the core, wherein the core comprises glass fibers and an impregnating agent, wherein the impregnating agent comprises 40-99 wt% synthetic hydrocarbon wax, 1-60 wt% microcrystalline wax, and 0-35 wt% hyperbranched α-olefin. The invention also relates to a method for producing such a composition and structural components thereof.

The utility model relates to the technical fields of chemical fibre textile equipment accessory, especially to a front spinning rotary godet with ceramic coating, which has high machining precision, small rotational inertia, good wear resistance and surface morphology conducive to tension control, thereby improving the stability of yarn processing and enhancing practicality; the utility model comprises an aluminum guide wheel base, a ceramic coating, a sealing layer and a V-shaped groove, the aluminum guide wheel base surface is provided with a V-shaped groove for accommodating yarn, and the aluminum guide wheel base surface is provided with a ceramic coating, the ceramic coating surface is provided with a sealing layer, the ceramic coating comprises a nickel-chromium bottom layer and an AT40 composite ceramic layer, the aluminum guide wheel base surface is provided with a nickel-chromium bottom layer, the nickel-chromium bottom layer surface is provided with an AT40 composite ceramic layer, and the sealing layer is microcrystalline wax, and the AT40 composite ceramic layer surface is subjected to microcrystalline wax hole sealing treatment.

The application provides a high-strength wear-resistant numerical control blade for cutting electronic parts and a preparation process thereof. The preparation process of the high-strength wear-resistant numerical control blade for cutting electronic parts comprises the following steps: adding alumina and zinc oxide and homogeneously mixing; adding other components and uniformly mixing; cold-pressing forming and sintering; surface pretreatment; microwave plasma chemical vapor deposition of diamond film. The numerical control blade prepared by taking boron nitride powder as the main raw material, combining with alumina, zinc oxide, paraffin and microcrystalline wax and the like, cold-pressing forming, sintering to form a base blade and then depositing diamond film on the surface of the base blade has high hardness, strong wear resistance and high precision, the interface bonding force between the diamond film and the base blade is strong, the diamond film is not easy to fall off, and the numerical control blade is suitable for cutting materials with high precision requirements such as electronic parts.

The present application provides a novel composition containing a hydrophobic compound (A) including a hydrophobic compound (A1) selected from an amine modifier, a polycarboxylic acid modifier, a paraffin wax, and a microcrystalline wax, and a hydrophobic compound (A2) which is a liquid or solid oil not belonging to the compounds selected from the amine modifier, the polycarboxylic acid modifier, the paraffin wax, and the microcrystalline wax. With this composition, a substrate can be imparted with liquid repellency.

This application discloses a modified EVA-based hot melt adhesive and its preparation method, relating to the field of EVA hot melt adhesive technology. The modified EVA hot melt adhesive prepared in this application comprises the following components: modified EVA resin, hydrogenated rosin glycerol ester, microcrystalline wax, amphiphilic hyperbranched polyamide-amine, and antioxidant. The modified EVA resin is obtained by introducing epoxy groups by grafting glycidyl methacrylate onto the main link of the EVA resin; the amphiphilic hyperbranched polyamide-amine is prepared by synthesizing an amino-terminated hyperbranched polyamide-amine from diethylenetriamine and methyl acrylate, followed by grafting stearic acid. During preparation, the raw materials are mixed in a mass ratio, melt-blended, extruded, cooled, and granulated. The modified EVA hot melt adhesive prepared in this application has the advantages of strong adhesion to both polar and non-polar substrates and a long service life.

This invention relates to the field of high-temperature alloy investment casting technology, specifically to a ceramic core plasticizer, its preparation method, and a ceramic core. The ceramic core plasticizer comprises, by weight percentage: 40-90 wt% paraffin wax, 5-37 wt% microcrystalline wax, 0.5-15 wt% lacquer wax, 0.2-4 wt% polybutene, and 0.2-4 wt% methyl palmitate. This solves the problem of low fluidity in existing plasticizers used for preparing ceramic cores.

Provided is a rust-preventive composition showing excellent rust-preventive performance for plate joining parts such as doors of automotive bodies, the composition having sufficient corrosion resistance and being capable of preventing dripping from automotive bodies. A rust-preventive composition including: a rust-preventive additive; a wax having a melting point within the range of 60° C. to 130° C. selected from microcrystalline waxes and polyethylene-based or polypropylene-based synthetic waxes; bentonite; a hydrogenated oil; and two or more kinds of diluents having different viscosities; the rust-preventive additive being contained in an amount within the range of 12% by mass to 39% by mass with respect to the total composition, the bentonite being contained in an amount within the range of 2% by mass to 6% by mass with respect to the total composition, the wax being contained in an amount within the range of 3% by mass to 13% by mass with respect to the total composition.

The present application relates to a kind of low temperature resistant composite oil phase formula and its preparation process, belong to emulsion explosive technical field, the composite oil phase includes by weight parts: poly-alpha olefin 5070 parts, microcrystalline wax 520 parts, emulsifier 25 parts, microcrystalline wax modifier 13 parts and interface reinforcing agent 0.51 parts, the microcrystalline wax modifier is the polymethyl methacrylic acid high carbon alcohol ester with C12C18 alkyl side chain.The present application is by constructing poly-alpha olefin microcrystalline wax emulsifier interface reinforcing agent microcrystalline wax modifier synergistic system, utilizes the molecular structure similarity of microcrystalline wax modifier and microcrystalline wax, by adsorption and steric hindrance effect, directional regulation microcrystalline wax crystallization morphology in oil phase cooling process, makes it form small dispersed microcrystalline, inhibits the low temperature solidification of oil phase, significantly improves the storage and use reliability of emulsion explosive in extremely cold environment.