327 results about "Octene" patented technology

The invention discloses an anti-shrinkage light, soft and elastic sole foaming material and a preparation method thereof, and belongs to the technical field of footwear products. The light, soft and elastic sole foaming material is formed by chemically foaming an EVA (Ethylene Vinyl Acetate) composite raw material, the EVA composite raw material is prepared from 50 to 70 parts of EVA, 20 to 40 parts of olefin thermoplastic elastomer, 10 to 20 parts of styrene elastomer, 1.5 to 3 parts of maleic anhydride grafted ethylene-octylene copolymer compatilizer, 0.4 to 0.8 part of peroxide cross-linking agent, 3 to 4 parts of foaming agent, 1 to 1.5 parts of zinc oxide, 1 to 1.5 parts of polyethylene wax substance and 0.5 to 1.5 parts of poly (butylene succinate). 0.3 to 1 part of polyamide 12 microspheres and 2 to 3 parts of nano montmorillonite. The foaming material can resist shrinkage when being used as a shoe sole part, and has good rebound performance and the like, so that the high-quality requirement of sneakers, the mass production stability and the like are met.

The invention relates to the technical field of polymer composite materials, in particular to a carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material and a preparation method thereof.The carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material is prepared from, by weight, 40-55 parts of nylon 66, 30-45 parts of polyphenylene sulfide, 15-30 parts of carbon fibers, 5-6 parts of compatilizer, 0.8-1.2 parts of antioxidant and 3-4 parts of flexibilizer, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 1.2-1.5%, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 0.8-1.0%, and the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1: 1. The composite material prepared by the invention is suitable for medium-high temperature scenes, not only solves the problems of insufficient high temperature resistance and poor mechanical properties of traditional materials, but also has good processability and environmental tolerance.

The application provides a preparation method of an octene aldehyde liquid-phase hydrogenation catalyst, and steps of the method comprise the following: (1) preparing a salt solution containing nickel ions, copper ions and aluminum ions, heating to 40-80 DEG C, adding a basic precipitator to react, and aging after the reaction is completed; (2) uniformly mixing the precipitate obtained after aging in step (1) with silica sol to obtain slurry; (3) washing and filtering the slurry, then adding alkali metal carbonate powder and boron nitride solid, uniformly mixing, and then shaping, drying and calcining to obtain the octene aldehyde liquid-phase hydrogenation catalyst. The preparation method is simple, green, environmentally friendly and easy to industrialize, the conversion rate and selectivity of the obtained octene aldehyde liquid-phase hydrogenation catalyst are high, and the catalyst is stable in performance and durable.

The invention discloses a preparation method of liposome for encapsulating euphausia superba oil, and belongs to the field of euphausia superba oil. Through material selection and hierarchical structure design, starch octenyl succinate, sodium alginate and pea protein are screened as composite wall materials, and the materials can achieve a synergistic effect on the molecule-interface-micro-nano scale to delay lipid oxidation, control the targeted release characteristic of active ingredients and improve the absorption efficiency of fat-soluble ingredients. Moreover, the liposome raw material of the euphausia superba oil is screened, and the liposome with low particle size and high stability is prepared.

An extreme-cold resistant low-fume halogen-free flame-retardant polyolefin sheath, a preparation method therefor, and a cable. The sheath comprises the following raw materials in parts by mass: 4-16 parts of an ethylene-vinyl acetate copolymer, 7-13 parts of a phosphate group functionalized linear low-density polyethylene, 9-15 parts of an ethylene-octene copolymer, 5-10 parts of a maleic anhydride-grafted ethylene-methyl methacrylate copolymer, 10-15 parts of magnesium hydroxide, 40-50 parts of aluminum hydroxide, etc. The preparation method for the phosphate group functionalized linear low-density polyethylene comprises: adding a catalyst to a pre-cooled ethylene monomer, adding a vinyl phosphate ester and an initiator after the reaction, and reacting for 1-2 hours at a temperature of 65-75°C and a pressure of 15-35 Mpa and then terminating the reaction, thereby obtaining the phosphate group functionalized linear low-density polyethylene. Compared with unfunctionalized polyethylene, the phosphate group functionalized polyethylene used has greatly improved low-temperature and flame-retardant performance, and can improve the overall flame-retardant and low-temperature performance of the formula.

The invention discloses a high-rigidity and high-toughness polypropylene composite material and a preparation method thereof, the high-rigidity and high-toughness polypropylene composite material comprises 55-70 g of homo-polypropylene, 10-20 g of anti-impact co-polypropylene, 18-25 g of surface modified talcum powder, 3-6 g of chopped glass fiber, 8-12 g of ethylene-octylene copolymer, 3-5 g of maleic anhydride grafted polypropylene, 0.5-1.0 g of polyethylene wax, and 0.3-0.5 g of an antioxidant 1010 and 168 (1: 1) mixture. The invention realizes the following effects: 1, a robust rigid-tough balance design: a reinforcing system with high-content talcum powder as a main body and low-content glass fiber as an auxiliary is adopted to cooperate with a POE (ethylene-octylene copolymer) flexibilizer, so that good low-temperature impact toughness is maintained while the bending modulus stably reaches 2500MPa or above; 2, interface compatibility optimization: the interface combination of the inorganic filler and the matrix is improved through PP-g-MAH, and the dispersity and the mechanical property stability are improved; and 3, process control: through optimized temperature and vacuum degree control, degradation is prevented, good performance reproducibility is ensured, and industrial production is easy.

The invention provides a polyethylene composite film. The polyethylene composite film comprises a surface layer, a middle layer and a heat sealing layer which are sequentially stacked, wherein the surface layer is composed of 58%-76% of hexene copolymerized metallocene linear low density polyethylene, 18%-37% of low density polyethylene and a small amount of slipping agent and anti-blocking agent; the middle layer is composed of 79%-88% of octene copolymerized metallocene medium density polyethylene, 5%-21% of hexene copolymerized metallocene linear low density polyethylene and 6%-15% of high density polyethylene; and the heat sealing layer is composed of 47%-65% of hexene copolymerized metallocene linear low density polyethylene, 33%-45% of low density polyethylene and 2%-5% of a tackifier. According to the composite film disclosed by the invention, through gradient design of each layer of material, the whole composite film has rigidity and toughness, and the composite film is particularly suitable for manufacturing stand-up bag packages which stand stably and are compression-resistant and impact-resistant.

The invention relates to the technical field of high polymer materials, and discloses a low-smoke halogen-free irradiation crosslinking polyolefin cable sheath material and a granulation process thereof, the raw materials comprise an ethylene-vinyl acetate copolymer, an ethylene-octylene copolymer, an epoxy group-containing terpolymer and functionalized composite powder, the powder system superfine aluminum hydroxide is subjected to high-temperature grafting through vinyl silane, after cooling, an active coating layer is constructed by zinc methacrylate, active magnesium oxide and a lubricant, and the process adopts matrix resin main feeding, powder side feeding and low-temperature low-shear extrusion, and is subjected to air-cooled die surface hot cutting and electron beam irradiation crosslinking forming. The covalent bond and ionic bond synergistic enhancement mechanism is utilized, the contradiction between mechanical property loss and processing rheological property deterioration is solved under the high filling amount of 137-160 parts, the active components are effectively prevented from being scorched in the early stage, and the material is endowed with excellent tensile strength, elongation at break and surface quality.

The invention relates to the field of sheath materials, and discloses an anti-aging sheath material for an electronic wire and a preparation method thereof, the sheath material comprises low density polyethylene, an ethylene-vinyl acetate copolymer, an ethylene-octene copolymer, ethylene propylene diene monomer, a triazine ring derivative, ammonium polyphosphate, modified nano silicon dioxide and an auxiliary agent; according to the triazine ring derivative, N-butyl-2, 2, 6, 6-tetramethyl-4-piperidylamine reacts with cyanuric chloride to prepare a triazine ring monosubstituent, hydrazine hydrochloride is used as a bridging agent to react with the triazine ring monosubstituent, and the triazine ring derivative and piperazine are polymerized to prepare the triazine ring derivative. The modified nano silicon dioxide is prepared by enabling 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and 4-propenyloxy-2-hydroxybenzophenone to react, and carrying out free radical polymerization on the reaction product on the surface of the nano silicon dioxide. The synergistic effect of mechanical property, thermo-oxidative aging resistance, ultraviolet aging resistance and flame retardant property is realized.

The invention discloses a wear-resistant and corrosion-resistant modified polyethylene special pipe and a preparation method thereof, and relates to the technical field of high polymer materials. The high-density polyethylene composite material is prepared from the following raw materials in parts by mass: 360 to 440 parts of high-density polyethylene, 100 to 120 parts of an ethylene-1-octylene copolymer, 15 to 20 parts of modified nanotubes, 20 to 25 parts of a composite flame retardant, 8 to 10 parts of a cold-resistant toughening agent, 0.2 to 0.4 part of an antioxidant 1010 and 0.2 to 0.4 part of an antioxidant 168. The modified nanotube is prepared by the following steps: pretreating a multi-walled carbon nanotube with a nitric acid aqueous solution, compounding the pretreated multi-walled carbon nanotube with tetrabutyl titanate and aluminum nitrate nonahydrate, heating to 800 DEG C in a nitrogen atmosphere, treating the multi-walled carbon nanotube with a mixed gas of methane, nitrogen and ammonia gas for 2-3 hours at 800 DEG C, and finally cooling the multi-walled carbon nanotube in the nitrogen atmosphere. And due to the introduction of the composite flame retardant and the like, the impact resistance, wear resistance, flame retardance and corrosion resistance of the polyethylene pipe are effectively improved.

The invention discloses an intelligent early warning cable and a preparation method of the intelligent early warning cable, and belongs to the technical field of cables. The flame-retardant polyolefin composite material is prepared from the following raw materials in parts by weight: 5 to 10 parts of ethylene-vinyl acetate copolymer, 10 to 20 parts of linear low-density polyethylene, 10 to 15 parts of ethylene-octylene copolymer, 3 to 8 parts of compatilizer, 15 to 20 parts of organic modified vanadium dioxide, 30 to 40 parts of ionic liquid modified aluminum hydroxide, 1 to 1.5 parts of cross-linking agent and 1 to 2 parts of lubricant. Organic modified vanadium dioxide is introduced into a sheath layer material to serve as an intelligent early warning material, the cable sheath layer is endowed with the temperature change characteristic, when the local temperature of the cable is abnormally increased due to overload and other reasons, the material can trigger color change, and therefore a striking visual mark is formed in a complex wire harness, and the early warning effect is improved. And the problems of lag, low efficiency and existence of blind areas of the traditional monitoring means are solved.

The invention relates to the technical field of cable accessories, in particular to a high-strength cable accessory and a preparation method thereof. The high-strength cable accessory comprises a semiconductor layer and an insulating layer, and the semiconductor layer is prepared from, by weight, 10-15 parts of low-density polyethylene, 75-85 parts of polyolefin thermoplastic elastomer, 8-12 parts of ethylene propylene diene monomer, 25-40 parts of silane coupling agent grafted graphene nanosheets and 4-6 parts of maleic anhydride grafted modified ethylene-octylene copolymer. The composition comprises the following components in parts by weight: 1.0-2.0 parts of zinc stearate, 1.0-2.0 parts of an antioxidant, 2.0-3.5 parts of trimethylolpropane trimethacrylate and 1.5-2.2 parts of dicumyl peroxide. According to the high-strength cable accessory provided by the invention, the overall mechanical property, thermal stability and conductivity of the composite material and the mechanical strength, breakdown field strength and insulating property of the insulating layer are improved.

The application discloses a preparation method of a composite antioxidant and application thereof, and belongs to the field of high polymer materials. In the application, a ring octene and a silicon-containing cyclic olefin monomer are subjected to metathesis copolymerization under the action of a metathesis catalyst, a silicon-containing polymer is obtained after chemical hydrogenation, and then the composite antioxidant is obtained after hydrolysis and mixing with lignin. The main chain of the composite antioxidant is a saturated hydrocarbon chain, the compatibility with polyethylene is high, the silicon-containing polymer is hydrolyzed to generate active silanol, the active silanol is efficiently bonded with lignin, and the lignin provides natural polyphenol antioxidant function. The application realizes efficient antioxidant of the composite material, high compatibility and long-term durability, and provides a new idea for high-performance environment-friendly high polymer composite materials.

The application relates to a high-damping and low-creep composite foaming material for gymnastics mats and a preparation process thereof, and relates to the field of polymer materials and preparation thereof. The preparation raw materials comprise the following components in mass fractions: ethylene-octene copolymer 60-70 parts, thermoplastic vulcanized rubber 15-25 parts, nano reinforcing filler 4-8 parts, maleic anhydride grafted ethylene-octene copolymer 5-9 parts, composite foaming agent 2-4 parts, crosslinking agent 1-2 parts, and antioxidant 1-1.5 parts. The preparation process comprises the following steps: melting and blending ethylene-octene copolymer, thermoplastic vulcanized rubber and maleic anhydride grafted ethylene-octene copolymer, adding nano reinforcing filler, mixing and kneading, then adding crosslinking agent, composite foaming agent and antioxidant, mixing and kneading, discharging and obtaining a sheet, crosslinking and foaming the sheet, releasing pressure after pressure maintaining, cooling and opening the mold, and obtaining the high-damping and low-creep composite foaming material for gymnastics mats. The application has the effects of improving the material collapse resistance, buffering performance and comfort performance.

Thermoplastic compositions include: a. from about 1 wt% to about 70 wt% of a polycarbonate homopolymer component; b. from about 10 wt% to about 40 wt% of a polybutylene terephthalate (PBT) component; c. from about 5 wt% to about 30 wt% of a polycarbonate copolymer component; and d. from about 1 wt% to about 15 wt% of a flame retardant component comprising a cyclic phosphazene compound having an oxaphosphorin ring-containing structure. The compositions have improved heat resistance and flame retardant properties.

The invention provides a high-flexibility aluminum alloy cable, which belongs to the technical field of cables and sequentially comprises a modified aluminum alloy conductor, a composite insulating layer, a flexible shielding layer and a multifunctional modified sheath layer from inside to outside. The multifunctional modified sheath layer comprises 46.8%-53.5% of hydrogenated styrene-butadiene block copolymer modified polyamide, 15.6%-20.8% of an ethylene-octylene copolymer, 5.8%-10.4% of an environment adaptability repairing agent, 3.2%-5.8% of organic modified montmorillonite, 1.6%-3.6% of an insulation regulation and control auxiliary agent, 2.3%-4.2% of a compatilizer and 0.7%-1.4% of a cross-linking agent. The problems that flexibility, environmental adaptability, self-repairing capacity and high-voltage insulation performance of an existing aluminum alloy cable are difficult to cooperate, and performance matching of a conductor and a sheath is insufficient are effectively solved, and the comprehensive use performance, scene adaptation range, long-acting reliability and high-voltage use safety of the cable are remarkably improved.

The present application relates to the technical fields of medical health food, and discloses a preparation device for naringin compound loaded by octenyl succinic acid modified porous starch ester, which comprises a preparation liquid ultrasonic mixing cylinder assembly, a mixing top cover assembly is arranged on the top of the preparation liquid ultrasonic mixing cylinder assembly, and a mixed liquid shaking and stirring assembly is arranged on the mixing top cover assembly; a rocker arm base assembly is rotatably arranged at the bottom of the preparation liquid ultrasonic mixing cylinder assembly; a preparation liquid mixing cylinder assembly is fixedly arranged on both sides of the top of the preparation liquid ultrasonic mixing cylinder assembly; the preparation liquid ultrasonic mixing cylinder assembly comprises a preparation liquid ultrasonic mixing cylinder, a plurality of mixing cylinder bottom arm tables are fixedly arranged on the preparation liquid ultrasonic mixing cylinder through reinforcing rib plates, and a bottom arm table main shaft rod is fixedly arranged on the mixing cylinder bottom arm table; an aeration pipe is fixedly arranged at the bottom of the preparation liquid ultrasonic mixing cylinder, and a liquid pump is fixedly arranged outside the bottom of the preparation liquid ultrasonic mixing cylinder. The present application has the characteristics of sufficient mixing.

The present invention relates to a multilayer film comprising: an inner layer system comprising a first surface and a second surface; a first skin layer adhered to the inner layer system at the first surface of the inner layer system; and a second skin layer adhered to the inner layer system at the second surface of the inner layer system; wherein the inner layer system consists of a polymer formulation (A), wherein the polymer formulation (A) comprises: > 60.0 and < 90.0 wt% of a first ethylene-based polymer which is a linear low density polyethylene A (LLDPE A); and > 10.0 and < 40.0 wt% of a high density polyethylene (HDPE) having a density > 940 and < 970 kg / m 3 , preferably > 955 and < 970 kg / m 3 ; measured according to ASTM D792 (2008); and the first and / or second skin layer is a sealing layer comprising a second ethylene-based polymer which is a linear low density polyethylene B (LLDPE B) comprising polymerized moieties derived from ethylene and 1-octene or 1-hexene having a density > 890 and < 915 kg / m 3 , preferably > 900 and < 915 kg / m 3 , measured according to ASTM D792 (2008); preferably, wherein the sealing layer comprises > 70.0 wt% of the second ethylene-based polymer, or wherein the sealing layer consists of the second ethylene-based polymer; wherein the multilayer film is a biaxially oriented film, wherein the biaxial orientation is introduced in solid state. This film allows the production of a sealed package having a sufficiently high seal strength at reduced sealing temperature (also referred to as seal initiation temperature) which at the same time has improved tensile properties, such as an improved tensile modulus in machine and transverse direction and an improved tensile strength in machine and transverse direction, which has proven.

A method of selectively producing oligomers can include contacting at least one antifouling agent with a first amount of at least one aluminum alkyl compound to form at least one antifouling compound comprising the following structure or dimer form thereof: (I); and adding the at least one antifouling compound, an additional amount of the at least one aluminum alkyl compound, the at least one titanate compound, and ethylene to a jet loop reactor to oligomerize the ethylene to produce one or more of 1-butene, 1-hexene, or 1-octene. (I)

This invention relates to the field of polymer materials technology. It discloses a low-linearity polypropylene-talc composite material, its preparation method, and its applications. The material comprises the following raw materials in weight percentages: polypropylene resin: 50-65%, modified talc: 15-25%, ethylene-octene copolymer resin: 10-15%, modified flat glass fiber: 5-15%, basic magnesium sulfate whiskers: 3-10%, heat stabilizer: 0.3-1%, and antioxidant: 0.1-0.5%. This composite material exhibits advantages such as a low coefficient of linear expansion, excellent surface tension, and superior mechanical properties.

The invention belongs to the technical field of insulating materials, and particularly provides a high-strength insulating material, a preparation method and a disc insulator. The invention relates to a high-strength insulating material, which is prepared from the following components: epoxy resin, a maleic anhydride-1-octene copolymer, SiO2 (at) COF-NH2, butyl glycidyl ether and 4, 4 '-diaminodiphenyl-methane. The high-strength insulating material prepared by the preparation method disclosed by the invention is excellent in mechanical property, and can keep excellent insulating property at room temperature and high temperature.

This invention discloses a method for preparing piperine starch microcapsules with sustained-release properties, belonging to the field of food processing technology. Using piperine as the core material, oleic acid as the oil phase carrier, and PG 2000 type octenyl succinate starch ester as the wall material, sustained-release piperine microcapsules are prepared through oil phase preparation, aqueous phase preparation, high-speed shearing, high-pressure homogenization, and spray drying. The microcapsules prepared by this invention have high encapsulation efficiency, small and uniformly distributed reconstituted particle size, and a stable system that is not prone to sedimentation. This allows for the slow and continuous release of piperine in simulated gastrointestinal fluid, significantly improving its poor water solubility, low stability, and low bioavailability. The resulting product can be widely used in the food, health product, and pharmaceutical fields.

The application discloses a preparation method of an octene aldehyde liquid-phase hydrogenation catalyst, and the preparation method comprises the following steps: (1) adding a weak acid into a salt solution containing silver, magnesium and aluminum, uniformly stirring, then adding a glycerol aldehyde, continuously stirring until a colloid is formed, grinding the colloid to obtain a powder, sieving, and roasting to obtain a carrier; and (2) preparing a precursor solution containing nickel and zinc, placing the precursor solution and the carrier in an ultrasonic container to shake, pouring the shaken solution into a well-sealed ball mill tank, ball milling, and then drying and roasting to obtain the catalyst. The catalyst is prepared by adding a silver-containing compound when the carrier is prepared and the ball milling method, so that the selectivity and stability of the catalyst are improved.

The application discloses a kind of bottle cap antibacterial plastics and preparation method thereof, belong to high polymer material production technical field, first, the bottle cap antibacterial plastics provided by the application includes the following mass parts raw materials: improved branched copolymer polypropylene: 70~80 parts, ZnO@ZrP core-shell powder: 2.0~3.0 parts, maleic anhydride grafting hydrogenated styrene-butadiene block copolymer: 5~8 parts, ethylene-octene copolymer: 8~12 parts, antioxidant 1010: 0.3~0.5 parts, calcium stearate: 0.5~1.0 parts.The bottle cap antibacterial plastics prepared by the application meets European Union EC No 1935 / 2004, Chinese GB 4806.7-2016 and other food contact material standards, provides a high reliability solution for beverage, pharmaceutical packaging.

The present invention relates to a polypropylene composition, a process for obtaining the same and an article, in particular an extruded article, such as an automotive part, comprising the same. The PP composition comprises 20-60 wt% of a first heterophasic propylene copolymer (HECO1) having a MFI of at least 60 dg / min; 10-40 wt% of a second heterophasic propylene copolymer (HECO2) having a MFI of at most 55 dg / min; 2-20 wt% of a first elastomer consisting of ethylene and octene monomers having a density of at most 0.860 g / cm 3 ; 2-20 wt% of a second elastomer comprising ethylene and alpha-olefin comonomers having 4 to 8 carbon atoms having a density of at least 0.861 g / cm 3 ; and 2-30 wt% of talc having an aspect ratio in the range of 100-140.

The application discloses application of a divinyl tetrazine in cyclization of a linear polypeptide, and a structure formula of the divinyl tetrazine is; the linear polypeptide has at least two free mercapto groups, and the vinyl groups of the divinyl tetrazine are subjected to Michael addition reaction with corresponding mercapto groups to form a ring. The application provides a new use of the divinyl tetrazine, the divinyl tetrazine can be subjected to high-efficiency Michael addition reaction with two natural cysteine mercapto groups on the linear polypeptide through the vinyl groups, so that double-mercapto peg cyclization of the linear polypeptide is realized, and the purpose of limiting the conformation of the linear polypeptide and improving the stability of the linear polypeptide is achieved. Moreover, the divinyl tetrazine can be subjected to a reverse electron demand Diels-Alder reaction with trans-cyclooctene (TCO) after the two vinyl groups are subjected to reaction with mercapto groups, so that functional polypeptides can be modularly constructed by coupling with functional molecules modified with TCO, and related applications are realized.

The invention belongs to the technical field of material modification, and provides a modified TPEE material and a preparation method thereof, the modified TPEE material is prepared from the following raw materials by mass: 70-75 parts of TPEE, 7-10 parts of glass fiber, 6-10 parts of maleic anhydride grafted ethylene-octene copolymer, 8-15 parts of modified bamboo fiber, 0.5-1 part of an anti-hydrolysis stabilizer, and 0.5-1 part of a lubricant. The glass fiber is used as a force transmission bridge to disperse the load; the modified bamboo fiber is used as a framework material in the modified material, so that the mechanical property of the material can be effectively improved; meanwhile, maleic anhydride groups react with hydroxyl and carboxyl in the TPEE material to generate covalent bonds, so that various raw materials are firmly anchored; in blending modification, various raw materials are uniformly dispersed and have no accumulation condition, so that the mechanical property of the material is effectively improved. The method provided by the invention is simple, reliable, low in process requirement, high in efficiency and suitable for large-scale modification preparation.

The invention provides a flame-retardant polyethylene master batch filled with magnesium hydroxide and a preparation method of the flame-retardant polyethylene master batch, and relates to the field of flame-retardant materials. The flame-retardant polyethylene master batch filled with magnesium hydroxide comprises the following raw materials in parts by mass: 8-20 parts of linear low-density polyethylene, 3-6 parts of an ethylene-octylene copolymer, 60-80 parts of modified magnesium hydroxide powder, 8-12 parts of montmorillonite powder, 3-5 parts of zinc borate, 2-5 parts of graphite powder, 1-4 parts of a lubricant, 4-8 parts of a coupling agent, 2-4 parts of barium stearate and 0.5-2 parts of an antioxidant. Compared with a common polyethylene material, the flame-retardant polyethylene master batch filled with magnesium hydroxide prepared by the invention has higher flame retardance, smoke suppression and carbon forming properties, also improves the dripping resistance of the polyethylene material, and can be used for preparing products such as polyethylene wires and cables, polyethylene foam boards, polyethylene pipes and the like.

This invention discloses a low-temperature resistant plastic bucket and its preparation method, belonging to the field of plastic bucket technology. This invention utilizes the synergistic effect of maleic anhydride-grafted ethylene-octene copolymer, nano-aluminum nitride, and cold-resistant toughening agent, combined with gradient injection molding, gradient annealing, and low-temperature aging processes to eliminate internal stress in the product. This allows the product to possess excellent tensile strength, flexural strength, and drop resistance reliability at -10℃. Under full load, the drop height can reach 1.2m without cracking or leakage. The synergistic effect of each component achieves a balance between low-temperature toughness and structural strength, significantly improving the stability and service life of the plastic bucket under low-temperature conditions.

This invention belongs to the field of new material preparation and application, specifically relating to a silicon carbide support and its application in hydrogenation catalysts. Using water glass as the silicon source, the pH of the water glass is adjusted to 7.0 with 10% dilute nitric acid. After filtration, washing, and further filtration, a slurry is obtained. Then, methylcellulose is used as the carbon source and mixed with the slurry. After drying, it is calcined at high temperature in a flowing inert atmosphere to form stable carbon-containing silicon carbide powder. Then, methylcellulose is used as a binder for kneading and extrusion molding, followed by high-temperature calcination in air to obtain the desired silicon carbide support. This SiC support has a high specific surface area and, when used in the preparation of hydrogenation catalysts, can effectively reduce the sulfuric acid color of octanol (octenal hydrogenation product) and effectively improve the ultraviolet light transmittance of ethylene glycol (ethylene glycol hydrogenation refining product).