36results about How to "Improve low temperature fluidity" patented technology

The invention relates to the technical field of oil well paraffin removal and prevention, and discloses a paraffin removal and prevention agent for an oil well shaft and a preparation process. The paraffin remover and inhibitor for the oil well shaft comprises the following components in parts by weight: 10-25 parts of a compound surfactant, 15-30 parts of a mutual solvent, 5-10 parts of a stabilizer, 1-10 parts of a novel wax crystal improver, 0.2-0.5 part of a rapid penetrant, 0.5-1.5 parts of alkali and 25-70 parts of water, the novel wax crystal improver has a structure similar to that of paraffin, and wax crystals can be dissolved in the novel wax crystal improver, so that the wax crystals are not easy to gather and deposit on a pipe wall, and the dissolution rate of the wax crystals is further improved; sodium sulfonate in the structure has strong polarity and hydrophilicity, can adjust the crystallinity of paraffin inhibitor molecules, has a synergistic effect with asphalt, colloid and the like in crude oil, reduces the surface tension of water, has a good wetting effect, and improves the low-temperature fluidity of the crude oil.

The invention belongs to the technical field of high polymer materials, and particularly provides a low-temperature-resistant toughened polyamide 66 composite material and a preparation method thereof, and the polyamide 66 composite material comprises the following components in parts by weight: 86-95 parts of polyamide 66, 5-10 parts of a toughening agent, 0.5-2 parts of a flow modifier, 0.25-0.5 part of a lubricant, 0.25-0.75 part of an antioxidant and 0.5-2 parts of black master batch. According to the low-temperature-resistant toughened polyamide 66 composite material disclosed by the invention, the polyamide 66 material is subjected to toughening and fluidity modification by using the self-made toughening agent and the organic silicon flow modifier, so that the low-temperature-resistant toughened polyamide 66 composite material is obtained. The composite material has good low-temperature toughness and fluidity, is simple in preparation process and low in cost, and can be used for ribbons, buckles, wire slots, pipe clamps and the like on electric automobiles or industrial equipment in extremely cold environments.

The invention relates to an environment-friendly degradable gear lubricant as well as a preparation method and application thereof, in particular to an environment-friendly degradable gear lubricant which is prepared from the following components in percentage by weight: 50-60% of base oil, 15-25% of an additive, 23-38% of modified castor oil, 5-10% of an antioxidant and 5-8% of a tackifier, the base oil is prepared from pentaerythritol ester, butylene adipate, butylene terephthalate and a catalyst, and the mass ratio of the pentaerythritol ester to the butylene adipate to the butylene terephthalate is (1.2 to 2.5) to (3.1 to 4.5) to (2 to 3). The vegetable oil biological lubricant can ensure environmental friendliness and degradability while realizing lubrication, and has all characteristics required by lubricating oil, including high viscosity index, low volatility and good lubricity.

The invention relates to a biodegradable hydraulic oil composition and a preparation method of hydraulic oil, and relates to the technical field of hydraulic oil compositions.The hydraulic oil composition comprises, by weight, 20-37% of ester oil, 5-10% of refined vegetable oil and 5-10% of a demulsifier, and the total weight of the ester oil, the refined vegetable oil and the demulsifier is 100%. The content of the refined vegetable oil is 62-79.9 wt%, the content of the demulsifier is 0.1-1 wt%, and the preparation method of the refined vegetable oil comprises the following steps: pre-loading a nanocapsule with an antioxidant as an inner core in activated clay, loading the activated clay pre-loaded with the nanocapsule into deacidified oil, and filtering to obtain the refined vegetable oil. The hydraulic oil composition disclosed by the invention has excellent biodegradability and also has the technical effects of relatively good oxidation stability and viscosity-temperature property.

The invention relates to a method for preparing an electrical equipment insulating liquid from waste edible oil methyl ester with an improved pour ignition point characteristic, and belongs to the technical field of insulating liquids. Distilling the waste edible oil methyl ester to obtain distilled waste edible oil methyl ester; the method comprises the following steps: adding a molecular sieve, immobilized lipase IM-100, neopentyl glycol, distilled waste edible oil methyl ester and methyl nonanoate into a reaction vessel, reacting for 72-96 hours under the conditions that the temperature is 40-50 DEG C and the stirring rotating speed is 120-130 rpm, and separating out the molecular sieve and the immobilized lipase IM-100 to obtain waste edible oil-nonanoate neopentyl glycol diester; and carrying out adsorption, vacuum drying and filter membrane filtration on the obtained waste edible oil-nonanoic acid-based neopentyl glycol diester to generate the waste edible oil-nonanoic acid-based neopentyl glycol diester insulating liquid. The obtained waste edible oil-nonanoic acid neopentyl glycol diester insulating liquid has an excellent low-temperature flow characteristic, and the ignition point also reaches the fireproof safety standard of K-grade insulating oil, so that the risk of accidents of power equipment such as a transformer and the like under severe environment conditions is reduced to a great extent; the vacancy of the insulating liquid in high-safety application places such as offshore wind power and the like is supplemented, and more choices are provided for the application of the insulating liquid.

This invention discloses a long-life pavement material for extreme and complex conditions and its preparation method. Modified asphalt pavement material is prepared using ultra-deeply decrosslinked rubber as the main raw material (with a content greater than 50%). Through specific processes and formulations, this pavement material retains excellent self-healing properties even under extreme low-temperature conditions (< -10 °C), with a healing efficiency greater than 50%, and a healing efficiency greater than 30% after aging, resulting in a long service life. This invention not only solves the problem of easy cracking in asphalt pavements and significantly improves their service life, but also enables the high-value resource utilization of waste rubber, resulting in significant environmental and economic benefits.

The present invention relates to the technical field of lubrication of extremely low temperature equipment, and specifically to an extremely low temperature energy-saving and environment-friendly hydraulic circulating oil and a preparation method thereof. The hydraulic circulating oil comprises, by weight, 5-20 parts of alkyl naphthalene; 64-80 parts of a functional fluid containing a low-viscosity, low-volatility poly-alpha olefin base material; 10-15 parts of a hydrocarbon polymer fluid containing an ester functional group; 0.8-1.5 parts of a composite additive; 0.03-0.1 parts of a demulsifier; and 0.01-0.05 parts of a defoamer. The hydraulic circulating oil greatly improves the flash point of the oil while ensuring low-temperature starting performance and low-temperature fluidity, effectively reduces the evaporation loss of the oil, effectively balances the low-temperature and high-temperature performances of the oil, expands the application field and lubrication reliability of the extremely low-temperature oil, can meet the lubrication requirements in an extremely low-temperature working environment, and has a good energy-saving effect.

The invention discloses an environment-friendly multifunctional oil composition for agricultural machinery and a preparation method of the environment-friendly multifunctional oil composition, and belongs to the field of oil for agricultural machinery. The lubricating oil is prepared from the following components in parts by mass: 3 to 5 parts of an extreme pressure anti-wear agent, 2 to 4 parts of an antioxidant, 0.1 to 2 parts of a preservative, 1 to 2 parts of a clearing agent, 0.1 to 3 parts of a dispersing agent, 0.1 to 2 parts of an anti-rust agent, 1 to 2 parts of a viscosity index improver, 0.1 to 0.5 part of an anti-foaming agent, 0.3 to 0.5 part of a pour point depressant and 79 to 92.3 parts of base oil, wherein the base oil is formed by combining rapeseed oil and synthetic ester base oil PALMESTER 2083; the preparation method comprises the following steps: sequentially adding the base oil, the anti-wear reagent at extreme pressure, the antioxidant, the preservative, the clearing agent, the dispersing agent, the viscosity index improver and the anti-foaming agent at the temperature of 50-70 DEG C according to the proportion, and mixing until the materials are completely dissolved to form a transparent precipitate-free solution. According to the multifunctional oil composition for the agricultural machinery, the influence on the environment is reduced, the wear resistance and the extreme pressure property are improved, and the service life is prolonged.

The invention provides a random polymerized metallocene compound as well as a preparation method and application thereof. The random polymerized metallocene compound has a structure as shown in a formula I, wherein R is selected from H, benzene and derivatives thereof; x is selected from halogen, C1-C30 alkyl groups and derivatives thereof, C1-C6 alkoxy groups and derivatives thereof, C2-C30 dialkyl amino groups and derivatives thereof, and C2-C10 alkenyl groups and derivatives thereof; m is a transition metal element. The random polymerized metallocene compound is high in catalytic activity and is used for preparing high-viscosity mPAO base oil, and the prepared product has excellent low-temperature flowing property.

The invention relates to a hydrocracking process and system. The gas oil feedstock and hydrogen are mixed and reacted in a hydrotreating unit. The resulting reaction effluent is sent to a first hydrogenation cracking unit and reacted by contacting a hydrogenation cracking catalyst I to obtain light fraction I rich in paraffins and heavy fraction I rich in cyclic hydrocarbons. The heavy fraction I is mixed with hydrogen and reacted in a second hydrogenation cracking unit, thereby producing heavy fraction II rich in cyclic hydrocarbons. The present invention wholly realizes the high-selective directional conversion of gas oil feedstock according to the chain structure and the ring structure and can produce chemical raw materials rich in paraffins and naphthenic speciality oil rich in cyclic hydrocarbons.

This application relates to the field of refrigeration systems, disclosing a refrigeration oil, a working fluid composition for refrigeration machines, and a refrigeration system. By adding a specific type of surfactant, this application significantly reduces the surface tension of the refrigeration oil, improves its compatibility with refrigerants such as hydrofluorocarbons, and reduces oil film formation or oil residue in the refrigeration system. The refrigeration oil described in this application has suitable viscosity and solubility viscosity, meeting the normal operating requirements of the compressor, while also effectively inhibiting the formation of oil film on the heat exchanger surface, thereby improving heat exchange efficiency. Furthermore, this refrigeration oil has good lubricity, low-temperature fluidity, and thermochemical stability, which can promote the circulation of the refrigeration oil in the refrigeration system pipeline, improve oil return efficiency, and extend the compressor's service life.

The invention relates to the technical field of electrochemical energy storage, in particular to a mineral type energy storage cooling liquid composition and a preparation method thereof.The mineral type energy storage cooling liquid composition is prepared from base oil and additives, the base oil is prepared from, by mass, 80%-100% of paraffin-based mineral oil and 0-20% of naphthenic mineral oil, and the additives comprise an antioxidant, a light stabilizer and an anti-foaming agent; the addition amount of the additive is 0-1% of the total mass of the base oil. The invention relates to a mineral type energy storage cooling liquid composition. According to the mineral type cooling liquid composition and the preparation method thereof provided by the invention, the mineral type cooling liquid composition is prepared by adding trace amounts of the antioxidant, the light stabilizer and the defoaming agent into the mineral type base oil, the mineral type cooling liquid composition has relatively high flash point and breakdown voltage and relatively good low-temperature fluidity, and the cooling performance is effectively improved; and the cable also has good insulativity, fireproof safety and stability.

The application discloses a kind of high antioxidation composite ester insulating oil and synthesis method thereof, it is related to synthetic ester insulating oil technical field.The synthesis method includes the following steps: with neopentyl glycol and gallic acid as reactant under the action of catalyst, first esterification reaction is carried out, and intermediate is obtained;With the intermediate, n-octanoic acid and n-decanoic acid as reactant under the action of catalyst, vacuum esterification reaction is carried out, and the high antioxidation composite ester insulating oil is obtained.The product prepared by specific step-by-step reaction process and raw material selection in the application, while realizing very low viscosity (40 ℃ kinematic viscosity is as low as 8.16 mm 2 s ‑1 )Simultaneously, very high initial oxidation temperature (as high as 272.8 ℃) and very low dielectric loss (as low as 0.0026) are obtained, and the "low viscosity-high antioxidation-low dielectric loss" is realized.

The invention relates to an adhesive, an insulating adhesive film for a busbar and a preparation method of the insulating adhesive film, and belongs to the technical field of insulating adhesive films. The adhesive is prepared from the following components in parts by weight: 40 to 90 parts of saturated polyester resin, 10 to 40 parts of tackifying resin, 30 to 80 parts of flame-retardant filler, 3 to 10 parts of curing agent, 0.1 to 0.5 part of curing accelerator and 50 to 300 parts of organic solvent, the softening point of the tackifying resin is 40-120 DEG C; the curing agent comprises reactive isocyanate and blocked isocyanate; the deblocking temperature of the blocked isocyanate is 70 DEG C to 120 DEG C; the mass ratio of the reactive isocyanate to the blocked isocyanate is 1: (1-5). The adhesive disclosed by the invention has excellent low-temperature fluidity and low-temperature reactivity, can be used as a hot melt adhesive layer or a semi-cured adhesive layer to finish hot pressing at a low temperature of 120-140 DEG C in a short time of 240-600s, and has good bonding strength on pure copper and plated parts thereof; and the adhesive has no initial adhesion at normal temperature, and can be positioned on a busbar.

The application relates to the technical field of lubricating oil, and particularly discloses a high-temperature-resistant and high-friction-reducing lubricating oil and a preparation method thereof. The lubricating oil comprises the following components: 35-45 parts of poly-alpha-olefin, 10-15 parts of methyl ricinoleate, 20-30 parts of pentaerythritol tetraoleate, 15-20 parts of hydrogenated base oil, 0.1-0.2 parts of modified graphene oxide, 0.8-1.5 parts of extreme-pressure anti-wear agent, 0.5-1 part of detergent, 0.3-0.5 part of antioxidant, 0.2-0.3 part of dispersant, 0.5-0.8 part of viscosity index improver, 0.1-0.2 part of rust inhibitor and 0.01-0.05 part of antifoaming agent. The application realizes cost reduction and emission reduction by compounding multiple base oils, guaranteeing the stability of the system through multi-component synergy and replacing part of the base oil with plant-based base oil. The modified graphene oxide significantly reduces wear through physical friction reduction and chemical anti-wear synergy, quickly discharges accumulated heat and prolongs the service life at high temperature.

The invention relates to the technical field of transformer oil, and provides an additive for reducing the pour point of plant-based transformer oil and a preparation method thereof.The additive is prepared from an alcoholysis modified copolymer, an alpha-olefin copolymer, a turmeric rhizome extract and a low-molecular-weight ester viscosity modifier, wherein the alcoholysis modified copolymer is obtained by modifying a norbornic anhydride-methyl tetradecyl ester copolymer with octadecanol; the norbornene anhydride-methyl tetradecyl ester copolymer is a copolymer obtained by reacting norbornene anhydride and tetradecyl methacrylate; the alpha-olefin copolymer is a copolymer obtained by reacting alpha-pinene and dodecene. In the additive disclosed by the invention, the alcoholysis modified copolymer inhibits wax crystal aggregation, the alpha-olefin copolymer optimizes the viscosity-temperature characteristic of an oil product, the turmeric rhizome extract enhances oxidation resistance, the low-molecular-weight ester viscosity modifier improves dispersity and flowability, and the pour point and viscosity of the plant-based transformer oil can be remarkably reduced under the synergistic effect of multiple components; the low-temperature fluidity and the comprehensive performance are improved.

The application relates to the field of lubricating oil, and more particularly to a novel wind power gear oil compound and a preparation method thereof. The novel wind power gear oil compound comprises, in mass parts, at least the following raw materials: a base agent 60-80 parts, an oily agent 1-8 parts, an antioxidant 3-6 parts, an anti-wear agent 3-8 parts and an improver 4-10 parts. The application provides a novel wind power gear oil compound which can be directly used as a wind power gear lubricating oil or used as an additive of other lubricating oil systems, can effectively enhance the extreme pressure resistance, corrosion and rust resistance, low-temperature flow and stability of the lubricating oil under the guarantee of excellent lubricating wear resistance and weather resistance and aging resistance of the lubricating oil, and meets the performance requirements of more complex wind power speed-up gear boxes.

This invention provides a dual-support hydrocracking catalyst, its preparation method, and its application. The dual-support hydrocracking catalyst comprises a composite support and an active metal. The composite support is composed of USY molecular sieve and MCM-41 mesoporous molecular sieve. The active metal comprises at least two transition metal elements. The mass ratio of the composite support to the active metal is (2~5):1; the mass ratio of the USY molecular sieve to the MCM-41 mesoporous molecular sieve is (0.5~2):1. The supported hydrocracking catalyst provided by this invention constructs a microporous-mesoporous synergistic pore structure, balancing activity and stability. By using a dual support composed of USY and MCM-41 in a specific ratio, the strong acidity and high shape selectivity of USY molecular sieve are retained, while the mesoporous structure of MCM-41 solves the problem of limited diffusion of macromolecular raw materials, significantly improving the catalyst's carbon-holding capacity and significantly improving its resistance to colloids and carbon deposition.

The invention relates to the technical field of catalysis, and discloses application of a Cu-ZSM-22 catalyst in preparation of aviation kerosene components through hydrodeoxygenation coupling isomerization of methyl palmitate, and the application comprises the following steps: 1) carrying out reduction treatment on the Cu-ZSM-22 catalyst; 2) filling a reactor with the Cu-ZSM-22 catalyst, mixing methyl palmitate and a solvent, introducing hydrogen, and carrying out hydrodeoxygenation and hydroisomerization reaction to obtain a product containing hexadecane and an isocompound thereof; according to the Cu-ZSM-22 catalyst, a ZSM-22 molecular sieve is used as a carrier, and a copper species is used as an active component. The catalyst is used for preparing aviation kerosene components through methyl palmitate hydrodeoxygenation coupling isomerization, has the advantages of being low in cost, high in methyl palmitate conversion rate, high in long-chain alkane selectivity, high in product isomerization ratio and the like, and can effectively improve the low-temperature fluidity of the aviation kerosene components.

The present application relates to a kind of collector for spodumene and its preparation method and flotation method, specifically to the field of flotation reagent technology, the collector includes: castor oil acid salt, potassium lauryl polyether phosphate, laurylimino diacetic acid disodium, phosphate betaine, alcohol ether, caustic alkali and solvent.The collector provided in the present application, by the synergistic adsorption of carboxylate of castor oil acid salt and phosphate ester group of potassium lauryl polyether phosphate and phosphate betaine to activated spodumene realizes strong collection, and by imino diacetate and phosphate betaine structure regulation selectivity, dispersibility and foam property, so as to improve the flotation separation effect of spodumene and quartz, feldspar, mica and other gangue minerals.

The invention discloses low-temperature modified asphalt concrete and a preparation method thereof, and belongs to the technical field of asphalt concrete. According to the invention, the base asphalt and the SBS modifier are mixed in proportion, and the base asphalt, the aggregate and the SBS are mixed to prepare the SBS modified asphalt concrete. The basalt fiber is added, so that the high-temperature stability, the low-temperature crack resistance and the water stability of the modified asphalt can be obviously improved; the added antioxidants ethoxyquin and tert-butylhydroquinone can effectively improve the aging resistance of the road asphalt, and the stabilizers sodium dodecyl benzene sulfonate and polyvinyl alcohol can effectively improve the storage stability of the road asphalt. Due to the addition of the crosslinking agent bismaleimide, a cross-linked network structure is better formed between the modified SBS block copolymer and the base asphalt, and the flowing property of the base asphalt is improved. And the prepared low-temperature modified asphalt concrete has excellent performances such as good low-temperature fluidity and good heat storage stability, is short in production period, and is suitable for large-scale industrial production and application.

The present application belongs to the technical field of temperature control, and particularly relates to a temperature control liquid for coal-based Fischer-Tropsch synthesis hydrocarbon as well as a preparation method and application thereof. The temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon, or the temperature control liquid mainly comprises coal-based Fischer-Tropsch synthesis hydrocarbon and liquid polyolefin. The distillation range of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 350 DEG C. The main component of the coal-based Fischer-Tropsch synthesis hydrocarbon is isomeric alkanes and normal alkanes with carbon number of 12-24, wherein the isomeric alkanes account for less than 90% of the total mass, and the normal alkanes account for more than 10% of the total mass. The kinematic viscosity of the coal-based Fischer-Tropsch synthesis hydrocarbon is less than or equal to 2.5 mm 2 / s at 100 DEG C, and 2.0-6.0 mm 2 / s at 40 DEG C. The kinematic viscosity of the liquid polyolefin is less than or equal to 8.0 mm 2 / s at 100 DEG C, and 2.0-20.0 mm 2 / s at 40 DEG C. The temperature control liquid has the characteristics of low density, low electrical conductivity, low kinematic viscosity and high heat conduction efficiency.

The utility model relates to the technical field of oil exploitation, in particular to a tubular anti-scale and anti-wax oil well pump which comprises a pump cylinder coupling, a pump cylinder, an anti-scale and anti-wax alloy plunger assembly, an anti-scale and anti-wax alloy standing valve assembly, an oil pipe coupling and an anti-scale and anti-wax alloy device. The pump cylinder coupling is in threaded connection with the upper end of the pump cylinder; an anti-scale and anti-wax alloy plunger assembly is arranged in the pump cylinder; the anti-scale and anti-wax alloy standing valve assembly is mounted at the lower end of the pump cylinder; and the tubing coupling is respectively connected with the lower end of the anti-scale and anti-wax alloy standing valve assembly and the anti-scale and anti-wax alloy device. Due to the design of the anti-scale and anti-wax alloy assembly, the contact area between the anti-scale and anti-wax alloy and oil liquid is increased, the oil liquid and the anti-scale and anti-wax alloy can make more sufficient contact and catalysis, formation of new scales can be prevented, and dissolution of old scales is promoted. The wax crystal form is changed by utilizing the conductivity and the surface catalytic characteristic of the anti-scale and anti-wax alloy, so that the freezing point is greatly reduced, and the anti-wax effect in the lifting process is achieved.

The present application relates to an EPDM rubber cup lubricant and a preparation method thereof, which comprises, by mass percentage, 65-80% polyethylene glycol; 10-25% triethylene glycol monomethyl ether borate; 5% to 10% low molecular weight polyether; 2.5-5% friction reducer; 1-3% antioxidant; 0.1-0.3% preservative; and 0.5-4% anti-swelling agent. The lubricant provided in the embodiment of the present application, the base oil comprises polyethylene glycol, triethylene glycol monomethyl ether borate and low molecular weight polyether, and has good low temperature fluidity after compounding, and its kinematic viscosity at -40°C is less than 1000mm 2 / s. It has excellent compatibility with EPDM rubber in brake fluid, with a volume increase of less than 1%, which is similar to brake fluid; it has good friction reduction performance, with a friction coefficient of less than 0.13, which is equivalent to grease; the hydrogen ion concentration index PH value is 7-7.2, which is neutral and will not corrode human skin.

This application relates to the field of capacitor technology, specifically disclosing an environmentally friendly capacitor insulating oil and its preparation method. The environmentally friendly capacitor insulating oil comprises polyol esters and hydroxyl acrylates, wherein the molar ratio of hydroxyl groups in the polyol esters to those in the hydroxyl acrylates is 1–2:1–2. This application introduces small-molecule hydroxyl acrylates to reduce the intermolecular forces of the polyol esters, thereby improving the low-temperature fluidity of the insulating oil. Simultaneously, the small-molecule hydroxyl acrylates also provide free radical trapping sites, effectively improving the gas evolution performance, antioxidant stability, and electrical properties of the insulating oil under extreme low-temperature conditions. This solves the technical problem of existing insulating oils being unable to simultaneously achieve low-temperature fluidity, insulation, and environmental friendliness.

The invention discloses a water-based environment-friendly defoaming agent, and relates to the technical field of defoaming agents, and a preparation method of the water-based environment-friendly defoaming agent comprises the following steps: adding long-chain alkyl silicone oil, white carbon black, epoxypropane, fatty alcohol-polyoxyethylene ether and tributyl phosphate into a reaction kettle, stirring for 2-3 hours, and uniformly mixing; adding a catalyst into the reaction kettle, mixing and stirring for 8-10 hours, and adding phosphatidine iodide, cholinesterase and an enzymolysis material; and adding a stabilizer and gamma-glycidyl ether oxypropyl trimethoxy silane, adding a polyacrylic acid salt-alkali swelling type thickener 1860 and carboxylesterase which are pre-mixed in water into the reaction kettle, and uniformly mixing and stirring for 1-2 hours to obtain the water-based environment-friendly defoaming agent. According to the water-based environment-friendly defoaming agent, the low-temperature fluidity of fatty alcohol-polyoxyethylene ether can be remarkably improved, the defoaming efficiency of the defoaming agent is improved, and the defoaming agent can improve the stability and reduce the layering and precipitation phenomena during storage.

This invention discloses a BN@EVA composite pour point depressant and its preparation method, belonging to the petrochemical field. The invention improves the compatibility of nano-hexagonal boron nitride (BN) with ethylene-vinyl acetate copolymer (EVA) by hydroxylation and amination, and then uses a solvent blending method to composite BN-NH2 and EVA in xylene to prepare the BN@EVA pour point depressant. The mass fraction of BN in the composite pour point depressant is 1-3 wt%, with an optimal value of 2 wt%. When the addition amount is 500 mg / kg, the pour point of crude oil can be significantly reduced from 19℃ to -7℃, a reduction of 26℃. FT-IR and SEM characterization confirmed that BN was successfully modified and uniformly dispersed in the EVA matrix; DSC curves showed a decrease in crystallization temperature and a bimodal synergistic effect; microscopic observation showed that the wax crystal morphology changed from a dense network to a dispersed spherical shape, effectively improving low-temperature fluidity. This invention has the advantages of good pour point depressant effect, simple process, and low cost, and is suitable for the extraction and pipeline transportation of high-wax crude oil.

The invention belongs to the technical field of PET sheets, and particularly relates to an energy-saving type polyester PET sheet and a production method thereof.The energy-saving type polyester PET sheet comprises two body layers, a reinforcing layer is arranged between the two body layers, and the reinforcing layer is bonded with the body layers; wherein the body layer is prepared from the following raw materials in parts by weight; the invention relates to a PET (polyethylene terephthalate) composite material, which is prepared from the following components in parts by weight: 80 to 100 parts of PET resin, 2 to 5 parts of dioctyl phthalate, 0.5 to 1 part of polyethylene wax, 0.1 to 0.3 part of hindered phenol antioxidant and 0.2 to 0.5 part of zinc stearate. The molecules of the added dioctyl phthalate are small and can be inserted between PET molecular chains to increase the degree of freedom of motion between the molecular chains, so that the glass transition temperature of the PET resin can be reduced, mutual attraction between the molecular chains is reduced, the molecular chains are easier to move, the PET temperature in a molten state is reduced, and the PET film has the advantages of being high in heat resistance, good in heat resistance and the like. Meanwhile, the PET melt has good fluidity, so that the low-temperature production of the PET sheet is realized, the energy loss in the production process is reduced, and the energy-saving property of the production process is improved.

The invention relates to the technical field of fuel additives, and particularly discloses a bio-based plant active fuel additive which comprises the following raw materials in parts by weight: 100-200 parts of vegetable oil, 10-20 parts of a pour point depressant, 2-8 parts of an antioxidant and 1-5 parts of a surfactant. The vegetable oil is one or more of palm oil, soybean oil, castor oil, jatropha curcas oil, coconut oil, sunflower seed oil, rapeseed oil and olive oil; the pour point depressant is prepared by polymerizing tetradecyl methacrylate, benzyl cinnamate and N-vinyl carbazole; the obtained fuel oil additive not only has excellent low-temperature fluidity and oxidation stability, but also contains a large number of plant active ingredients, is green, environment-friendly and degradable, can be directly added into a fuel oil tank of an internal combustion engine for use, improves the quality of fuel oil, reduces the oil consumption, improves the lubricity of the fuel oil, and prolongs the service life of the engine.

The invention discloses a stabilizer for power equipment. The stabilizer comprises the following components in parts by weight: 50-70 parts of poly-alpha-olefin, 40-60 parts of ester base oil, 3-5 parts of an antioxidant, 2-5 parts of a dispersing agent, 2-4 parts of an anti-wear agent, 1-2 parts of a cleaning agent, 1-3 parts of a preservative, 1-3 parts of a foam inhibitor and 3-5 parts of a viscosity index improver, the ester base oil is a composition of dioctanoic acid diester and diisononanoic acid diester, and the weight ratio of the dioctanoic acid diester to the diisononanoic acid diester is 1: (3-5). The power equipment stabilizer prepared by the scheme has excellent performance in a high-temperature oxidation stability test (ASTM D943), a low-temperature starting fluidity test (ASTM D5293) and a pour point test (ASTM D97), and results show that the power equipment stabilizer has certain stability under high-temperature and low-temperature conditions, and meets the use requirements of power equipment. According to the scheme, the ester base oil is a mixture of dioctanoic acid diester and diisononanoic acid diester, so that the performance of the power equipment stabilizer is remarkably improved.