397 results about "Phthalate" patented technology

The invention discloses a quick-curing polyurethane seamless expansion joint material for roads and a preparation method, and belongs to the technical field of road engineering materials. The material is prepared from polyether polyol, polycaprolactone glycol, a bisphenol A epoxy-polyether block isocyanate terminated prepolymer, a methyl phenyl silicon-boron hybrid hydroxyl chain extender, diphenylmethane diisocyanate, calcium carbonate, wollastonite, a hindered amine anti-aging agent and dioctyl phthalate. Wherein the bisphenol A epoxy-polyether block isocyanate terminated prepolymer is prepared by the following steps: reacting bisphenol A with epoxy chloropropane to generate epoxy resin, reacting with polytetramethylene ether glycol, and introducing isophorone diisocyanate; the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation and ethylene glycol reaction on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester; and the methyl phenyl silicon-boron hybrid hydroxyl chain extender is prepared by carrying out hydrosilylation on methyl trimethoxy silane, 3-glycidyl ether oxypropyl trimethoxy silane and allylboronic acid pinacol ester. The material has the advantages of quick curing property, weather resistance and high-temperature stability, and is suitable for road seamless expansion joint scenes.

The invention relates to a photo-thermal aging resistant photovoltaic cable and a preparation method thereof, and belongs to the technical field of high polymer materials. The photo-thermal aging resistant photovoltaic cable is composed of a conductor wire core, and an insulating layer, a filling layer and an outer sheath which are sequentially coated on the outer side of the conductor wire core, the outer sheath is prepared from the following raw materials in parts by weight: 80-120 parts of polyvinyl chloride resin, 3-5 parts of a modified anti-aging agent, 2-8 parts of a modified flame retardant, 1-3 parts of dioctyl phthalate, 10-20 parts of nano silicon dioxide, 1-3 parts of butyl stearate and 3-5 parts of zinc stearate; the photo-thermal aging resistant photovoltaic cable prepared by the invention not only has good ultraviolet ray and thermal aging resistant effects, but also has an excellent flame retardant effect.

The invention relates to the technical field of waterproof materials, and particularly discloses a self-adhesive polymer modified asphalt waterproof material as well as a preparation method and application thereof. The self-adhesive polymer modified asphalt waterproof material is prepared from the following raw materials in parts by mass: 45 to 55 parts of asphalt, 8 to 12 parts of softening oil, 10 to 15 parts of modifier, 8 to 12 parts of desulfurized rubber and 10 to 15 parts of filler, the modifier comprises the following raw materials: an ethylene-octylene copolymer, butadiene styrene rubber, coumarone resin and a functional modified material; the functional modified material is prepared from illite and phthalic acid ester. Through the design of the modifier and the proportion design of the raw material components, the synergistic interaction effect of the raw materials is fully played, the comprehensive performance of the waterproof material is improved, and the self-adhesive polymer modified asphalt waterproof coiled material prepared from the waterproof material has excellent high and low temperature properties, persistent adhesivity, peel strength, aging resistance and water resistance.

The invention relates to the technical field of rubber-plastic composite flame-retardant materials, and provides a graphite rubber-plastic composite flame-retardant material and a preparation method thereof.The preparation method comprises the following processes that nitrile rubber, polyvinyl chloride, dioctyl phthalate, modified expandable graphite, a stabilizer, sulfur and an anti-aging agent are added into a high-speed mixer and mixed to be uniform, and a premix is obtained; and feeding the premix into a double-screw extruder, and carrying out melt blending, extrusion and vulcanization to obtain the composite flame-retardant material. The preparation method has the beneficial effects that the modifier is combined with the expansible graphite and compounded with the nitrile rubber, the polyvinyl chloride and other base materials, so that the flame retardant property and the mechanical property of the prepared composite material are remarkably improved.

The invention relates to the technical field of shield tunnel construction, and discloses a shield tunnel segment joint waterproof material and a waterproof structure, the shield tunnel segment joint waterproof material comprises a component A and a component B; the component A comprises the following component: 30-40 parts of liquid polysulfide rubber; 5 to 10 parts of a fluorinated polyurethane prepolymer; 1-5 parts of a silane coupling agent; 3-5 parts of fumed silica; 8-15 parts of hollow glass beads; 10 to 15 parts of nano calcium carbonate; 0.5 to 2 parts of polytetrafluoroethylene micro powder; 0.1 to 1 part of ettringite; the component B comprises the following component: 1-5 parts of manganese dioxide; and 5 to 10 parts of dioctyl phthalate. By utilizing the characteristics that the sealing gasket has excellent fluidity during injection and can be automatically cured into a high elastomer within a set time, a pre-installed sealing gasket can be replaced by adopting an innovative injection process, and the construction difficulty faced by high-precision shield segment assembly in a high-water-pressure environment is effectively solved.

The invention relates to the technical field of cables, and provides a flexible cable for a robot, which comprises a cable core and a sheath layer wrapping the cable core, the cable core comprises signal lines and power lines. Each signal line sequentially comprises a conductor, a belting layer and a shielding layer from inside to outside; the shielding layer sequentially comprises a first shielding layer and a second shielding layer from inside to outside; the first shielding layer is a bare copper wire mesh layer; the second shielding layer is a tinned copper wire mesh layer; the belting layer is a glass fiber tape layer; the sheath layer comprises the following raw material components in parts by weight: 80-90 parts of polyvinyl chloride resin, 20-30 parts of a plasticizer, 2-4 parts of an anti-aging agent, 2-4 parts of a calcium-zinc stabilizer, 1-4 parts of a lubricant and 6-16 parts of a flame retardant; the plasticizer is prepared from dioctyl phthalate, polyethylene glycol adipate and p-methoxyacetophenone. According to the technical scheme, the problem of low elongation at break of the flexible cable for the robot in the prior art is solved.

The present disclosure relates to a flexible multi-layered material. An embodiment consistent with the disclosure has a plurality of poly(vinyl chloride)—PVC—layers, wherein at least one of the plurality of PVC layers is a foam layer, wherein each of the layers of the plurality of PVC layers comprises up to 60% (w / w) of a phthalate-free plasticizer, and wherein the phthalate-free plasticizer is selected from the group consisting of: phosphate, trimellitate, adipate, citrate, sebacate, polyester, vegetable oil, and mixtures thereof, and wherein the solubility of the phthalate-free plasticizer in the PVC is at least 13 (J·cm−3)1 / 2.

Pharmaceutical compositions suitable for oral administration (such as a tablet or a capsule) are provided, which comprise a therapeutically effective amount of an amorphous solid dispersion of cabozantinib, e.g., for treating a proliferative disorder. Preferably, the amorphous solid dispersion consists of (a) cabozantinib or a pharmaceutically acceptable salt thereof (such as cabozantinib(S)-malate); (b) at least one pharmaceutically acceptable carrier selected from the group consisting of hydroxypropyl methyl cellulose acetate succinate (HPMC-AS), polyvinyl pyrrolidine and vinyl acetate (PVP / VA) copolymer, hydroxypropyl methylcellulose phthalate (HPMCP), and mixtures thereof; (c) a pore-forming agent; and (d) a plasticizer.

The invention discloses an anti-aging light-conversion silver black mulching film and a preparation method thereof, and belongs to the technical field of agricultural polymer films. The preparation method comprises the following steps: S1, mixing low-density polyethylene powder, aluminum paste, a complex light conversion agent, dioctyl phthalate and EVA (Ethylene Vinyl Acetate) to prepare silver light conversion master batches; s2, vinyl-terminated fluorosilicone oil, tert-butyl peroxybenzoate and linear low-density polyethylene powder are stirred for a reaction, and modified low-density polyethylene is obtained; the modified low-density polyethylene, maleic anhydride grafted polyethylene, a multi-effect light stabilizer and polyethylene wax are subjected to banburying granulation, and modified light-stable master batches are obtained; s3, carrying out banburying granulation on the low-density polyethylene powder, the polyethylene powder, carbon black, zinc stearate, ethylene bis-stearamide and the EVA powder to obtain black master batches; s4, blending the silver layer and the black layer, and performing double-layer co-extrusion to obtain the light-conversion silver-black mulching film. The light-conversion silver black mulching film provided by the invention has good mechanical properties and aging resistance.

The application discloses a method for inhibiting the migration of toxic small molecules in plastics based on a protein-based phase transition composite coating, which is characterized by the following steps: inducing the rapid phase transition of proteins on the surface of plastics by a disulfide bond reducing agent to form a nanofilm, and adsorbing polysaccharides on the surface of the nanofilm to form a protein-based phase transition composite coating on the surface of the plastics, which can inhibit the migration of toxic small molecules in the plastics. The preparation method of the protein-based phase transition composite coating is simple, the cost is low, the inhibition effect on the migration of phthalate plasticizers and bisphenol A in plastics (such as PVC, PP, PE, PS and PET) is good, the adsorption of drugs on the surface of medical plastics can be prevented at the same time, the protein-based phase transition composite coating has good biocompatibility, is suitable for temperature-sensitive plastics, has universality, can be safely used on the surface of food and medical plastic products, and has a good popularization and application prospect on the surface of plastics.

The invention discloses an antibacterial coating which comprises a component A and a component B. The component A comprises the following raw materials in parts by weight: 40-60 parts of epoxy resin, 15-35 parts of polyamide resin, 5-10 parts of tea tree essential oil, 1-3 parts of di (2-ethylhexyl) phthalate, 1-2 parts of fumed silica, 1-2 parts of acrylate, 1-2 parts of sodium phosphate and 1-2 parts of polyvinyl ether. The component B comprises the following raw materials in parts by weight: 20-30 parts of modified nano zinc oxide, 40-60 parts of an antibacterial curing agent, 15-20 parts of butanol and 2-10 parts of acetone. The weight ratio of the component A to the component B is 8: (2-4), and the water-resistant coating is excellent in mechanical property, high in adhesive force and good in water resistance.

The invention discloses a paired electrochemical synthesis method of anisaldehyde and phthalide, which comprises the following steps of: adopting p-methyl anisole and phthalate as raw materials, oxidizing p-methyl anisole at an anode to generate anisaldehyde through electrolytic reaction in the same electrolytic bath, and reducing phthalate at a cathode to generate phthalide, an electrolyte system adopted in the electrolytic reaction comprises an electrolyte, water, N, N-dimethylformamide and methanol. In the same electrochemical synthesis system, p-methyl anisole and phthalate are used as raw materials, the mixed solvent which is low in price and easy to obtain is used, anisaldehyde is generated on an anode and phthalide is generated on a cathode through an electrolytic reaction, high-added-value products exist in the anode and the cathode, an oxidizing agent and a noble metal catalyst are not needed, and the method is simple and convenient to operate. Basically no three wastes are generated, and no hydrogen and oxygen are generated in the reaction process, so that the method is safer.

The invention relates to high-molecular-weight polydiethylene glycol phthalate, a preparation method thereof and low-warping hydrolysis-resistant glass fiber reinforced PBT (polybutylene terephthalate) in the field of resin. The high-molecular-weight polydiethylene glycol phthalate has a structure as shown in a formula (I), and the low-warping hydrolysis-resistant glass fiber reinforced PBT is prepared from the following components: PBT, high-molecular-weight polydiethylene glycol phthalate, an inorganic filler and glass fibers. By adding the high-molecular-weight polydiethylene glycol phthalate, the tensile strength and bending strength of a PBT and high-molecular-weight polydiethylene glycol phthalate blending system can be improved, the notch impact strength of the system can be improved to a certain extent, the molding shrinkage rate of the blending system is reduced, and the PBT / high-molecular-weight polydiethylene glycol phthalate blending system has hydrolysis resistance and can be used for preparing the PBT / high-molecular-weight polydiethylene glycol phthalate composite material. And the effect is obvious.

Disclosed are biodegradable compositions, suitable for using in packaging, containing an Ulva polysaccharide, a nanomaterial, a non-Ulva biomass, and a non-phthalate plasticizer, and methods of forming thereof.

The present application provides a lubricating additive, comprising the following components of the raw material: 20 to 40 parts by weight of an ester compound, the ester compound is selected from one or more of di(2-ethylhexyl) adipate, diisobutyl adipate, diheptyl adipate, diisononyl adipate, diisodecyl adipate, dimethyl sebacate, dibutyl sebacate and di(2-ethylhexyl) sebacate; 5 to 15 parts by weight of a fluorine-containing ion salt, the fluorine-containing ion salt is selected from one or more of lithium di(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate and lithium tetrafluoroborate; 1 to 5 parts by weight of an alkyl phthalate. The lubricating additive has good dispersibility in base oil, and the prepared conductive grease has good electrical conductivity and friction reduction and anti-wear properties. It is used in electrical equipment to have lubrication, friction reduction and antistatic effects, can reduce the failure frequency of equipment, extend the service life of equipment, and improve production efficiency and safety.

The invention discloses a high-stability MEMS hydrogen sensor and a preparation method thereof. The high-stability MEMS hydrogen sensor is a semiconductor resistance type hydrogen sensor based on a metal oxide gas sensitive coating and sequentially comprises a silicon nitride supporting layer, a Pt / Ti heating electrode, a sensing electrode, a silicon nitride isolating layer and a metal oxide gas sensitive film from bottom to top. The metal oxides are high-purity antimony doped tin dioxide, tetraamino palladium nitrate and tetraammineplatinum nitrate. The preparation method comprises the following steps: mixing high-purity antimony-doped tin dioxide powder, tetraamino palladium nitrate powder and tetraammineplatinum nitrate powder, preparing gas-sensitive slurry from a mixed solution of terpilenol, diethylene glycol butyl ether acetate, ethyl cellulose, dibutyl phthalate and dioctyl phthalate, dispensing the gas-sensitive slurry on a central interdigital electrode area of an MEMS chip, and performing vacuum drying to obtain the gas-sensitive MEMS chip. And performing vacuum standing and slow heating to obtain the sensor. The sensor is low in detection lower limit and stable in resolution ratio after high-humidity aging.

This invention proposes a catalyst component, catalyst, and their applications for olefin polymerization, belonging to the field of olefin polymerization technology. The catalyst component contains products obtained from the reaction of a magnesium source, a titanium source, and an internal electron donor, wherein the internal electron donor comprises furan compounds and diether compounds. The catalyst of this invention exhibits high hydrogen sensitivity and stereoregulation, with a good balance between the two. The molecular weight distribution of the prepared low melt index polymer is broader than that of the high melt index polymer, and the catalyst component of this invention does not contain phthalate compounds (plasticizers).

The invention relates to the field of formula and method application of reinforcing slurry in tunnel excavation, in particular to a grouting material for soft and broken surrounding rock, a preparation method of the grouting material and pre-simulation equipment. The problems that an existing inorganic grouting material is long in setting time and prone to solidifying a cutterhead, and an organic grouting material is poor in setting time controllability, high in manufacturing cost and the like are solved. The coating provided by the invention is obtained by mixing a component A and a component B according to a volume ratio of 1: 0.78. The component A comprises water glass and a catalyst; and the component B is prepared from polymethylene polyphenyl polyisocyanate (PAPI), polyether polyol (DL-2000D) and octyl phthalate (DOP). The invention has the advantages of short gelling and curing time, strong cementing property, high compressive strength and better fluidity; the inorganic water glass is mixed with the organic polyurethane, and after reaction, the material is pollution-free, safe and environment-friendly; the requirements of weak surrounding rock on the reinforced grouting material in tunnel engineering can be met.

The invention relates to the technical field of environment-friendly materials, and discloses an environment-friendly plastic bag which is of a three-layer composite structure composed of the following raw materials in parts by weight: an outer layer, 60-80 parts of polylactic acid, 40-60 parts of poly (adipic acid) or butylene terephthalate with a thickness ratio of 40%, and a middle layer, 75-90 parts of modified cassava starch, 25-35 parts of polyvinyl alcohol and 3-8 parts of a citrate cross-linking agent with a thickness ratio of 30%. The inner layer comprises 80-95 parts of polyhydroxybutyrate valerate and 15-25 parts of surface treatment calcium carbonate, the thickness ratio of the inner layer is 30%, the three layers are integrally formed through a co-extrusion film blowing process, and a micron-sized groove array is arranged on the surface of the outer layer. The outer layer adopts the blend of polylactic acid and dibutyl phthalate, the brittleness of polylactic acid is made up by utilizing the flexibility of dibutyl phthalate, and meanwhile, the use amount of pure polylactic acid is reduced, so that the cost is reduced by 40% compared with that of a pure polylactic acid bag; and 15 wt% of stearic acid is added into the inner layer polyhydroxybutyrate valerate to treat calcium carbonate, so that the performance is ensured, and the cost is controlled at the same time.

The invention discloses a phosphorus-titanium polyester catalyst as well as a preparation method and application thereof, and belongs to the technical field of catalyst preparation. The structural general formula of the phosphorus-titanium polyester catalyst is # imgabs0, wherein R1 is selected from any one of hydroxyl, C1-C12 aliphatic alkoxy or aromatic alkoxy; and R2 is selected from C2-C12 aliphatic alkyl groups. The preparation method of the catalyst comprises the following steps: reacting dihalogenated phosphite ester with dihydric alcohol, and further reacting the obtained product with organic phthalic ester to prepare the phosphorus-titanium polyester catalyst. Starting from a molecular structure, a chelate ring structure which takes a titanium atom as a center and simultaneously contains two phosphorus and titanium elements is constructed through molecular design, the chelate ring structure is stable, and the coordination and electronegativity of the central titanium atom in the catalyst can be effectively adjusted; therefore, the problems of poor catalytic stability and hydrolysis resistance of a titanium catalyst in the prior art are effectively solved, and the quality of a polyester product is effectively improved.

The invention provides a rapid screening method for non-phthalate plasticizers in processed food. According to the rapid screening method, 36 non-phthalate plasticizers are detected by adopting gas chromatography-quadrupole rod / electrostatic field orbitrap high-resolution mass spectrometry. According to the method, efficient purification of the non-phthalate plasticizer in various typical processed foods such as wine, edible vegetable oil and infant formula milk powder can be realized by adopting a QuERChERS method, the pretreatment process is greatly simplified, and the detection efficiency is improved; a high-resolution mass spectrum full-scanning determination strategy is adopted in a breakthrough manner, so that the detection precision is improved, a reliable data basis is provided for subsequent traceability analysis, and the technical route is obviously different from a low-resolution mass spectrometry method which is generally adopted in the prior art; according to the method, high-throughput and high-sensitivity screening and confirmation under the condition of no standard substance are innovatively realized, the detection cost is remarkably reduced, and the practical value of the method is improved. Based on the screening confirmation strategy provided by the invention, the urgent requirements of food quality safety supervision and novel pollutant risk monitoring can be effectively met, and the method has good popularization and application prospects.

Belonging to the technical field of oil-gas field development, the invention provides a core-shell temporary plugging agent, which mainly comprises a shell capable of acidolysis of bio-based cellulose and a spherical core wrapped by the shell and capable of pyrolysis of a polymer. The molding material of the shell is hydroxypropyl methyl cellulose phthalate and sodium lignin sulfonate; the molding material of the spherical core body is a copolymer of N-isopropylacrylamide, acrylamide and sodium p-styrenesulfonate, and the temporary plugging agent has good dissolvability / degradability, has no requirements on the dissolved / degraded water quality environment, has strong adaptability to the environment and stability, and can be used as a temporary plugging agent. Accurate plugging and controllable plugging removal of a high-permeability layer of a heterogeneous oil reservoir are achieved through a double-response cooperation mechanism of'pH triggering shell layer disintegration (the threshold value is 2.5-3.5) and temperature driving core expansion (the threshold value is 60-120 DEG C) ', and the high-permeability plugging agent is suitable for fracture acidizing temporary plugging of common low-temperature oil and gas wells and can effectively meet the technical requirements of fracture acidizing temporary plugging of high-temperature deep wells. And excellent flexibility and reliability are achieved during operation, and the application prospect is good.

A rapid disintegration type enteric gelatin hollow capsule shell belongs to the technical field of hollow capsule production, and comprises the following components by mass: 70%-90% of gelatin, 0.01%-5.0% of a humectant, 0.01%-10% of a surfactant, 0.01%-10% of a plasticizer, 0-5% of a disintegrating agent, 0.1%-10% of an opacifying agent, and 1.0%-20% of a coating material. The method comprises the following steps: synchronously forming a glue solution and a coating, alternately dipping in glue, and drying at low temperature; the preparation method has the beneficial effects that a disintegration acceleration mechanism is adopted, the disintegrating agent quickly absorbs water and expands in intestinal juice, and the permeability of the capsule shell is enhanced by cooperating with the surfactant; the proportion of a coating material is optimized, and hydroxypropyl methylcellulose phthalate is greater than or equal to 15%, so that the intestinal juice response speed is increased; and the disintegration time in intestinal juice is about 8 minutes, which is increased by about 50% compared with the disintegration time of about 15 minutes of the traditional capsule.

The invention discloses an internal electron donor for olefin polymerization, a catalyst component, a catalyst and application of the internal electron donor, the internal electron donor for olefin polymerization has a structure as shown in a formula I. In the formula I, R1 and R2 are the same or different and are independently selected from C1-C20 alkyl containing or not containing heteroatoms, and R1 and R2 are independently selected from C1-C20 alkyl containing or not containing heteroatoms. The heteroatom is one or a combination of more than two heteroatoms selected from H, N, O, S, P, Si and halogen; x is CH or N. The internal electron donor adopts a non-plasticizer internal electron donor, the prepared catalyst has high catalytic activity which is generally higher than that of common phthalate and diether internal electron donor catalysts in industry, and the polymer obtained by catalytic polymerization has the advantages of regular particle size, high bulk density, high isotacticity, small temperature fluctuation in a kettle during polymerization, and good stability. The reaction is stable and industrial production is facilitated.

The application belongs to the technical field of ink, and discloses a UV touch ink and a preparation method thereof.The UV touch ink comprises a UV modified acrylate, an acetylacetate ethyl ester-containing acrylic resin, an active monomer, an organic wax, a photoinitiator and a solvent; the active monomer is selected from at least one of dipropylene glycol diacrylate, diethylene glycol phthalate diacrylate, neopentyl glycol diacrylate and hexanediol diacrylate. The UV modified acrylate, the acetylacetate ethyl ester-containing acrylic resin, the active monomer and the organic wax are used as main components, and the selection of the active monomer enables the prepared UV touch ink to have excellent skin feeling and velvet feeling effects, and excellent adhesion, light resistance, weather resistance, alcohol resistance and solvent resistance. Meanwhile, the UV touch ink can simplify the curing process, and only needs to be dried by UV after printing, has high curing efficiency, and does not need to be dried by hot air and UV.

The invention relates to the technical field of building waterproof materials, in particular to a rubber waterstop for a deformation joint of a combined concrete floor. The rubber waterstop sequentially comprises a composite rubber plate, a self-adhesive rubber sheet and an elastic supporting strip from top to bottom. The composite rubber plate is composed of a modified rubber plate and a glass fabric reinforcing layer arranged on the top of the modified rubber plate. The modified rubber plate is prepared by the following method: putting 90-110 parts by weight of a rubber base material, 4-6 parts by weight of nano zinc oxide, 1-1.5 parts by weight of stearic acid, 2-3 parts by weight of an anti-aging agent, 8-12 parts by weight of a functional aid, 20-30 parts by weight of dioctyl phthalate, 15-30 parts by weight of carbon black, 20-40 parts by weight of kaolin and 1-2 parts by weight of an accelerant into an internal mixer for mixing; performing extrusion molding on the rubber compound by adopting an extruder or a calender, and then performing cutting treatment, thereby obtaining the product. The rubber waterstop provided by the invention not only has excellent waterproof and dynamic sealing effects, but also has excellent mechanical properties and aging resistance; meanwhile, installation is flexible and efficient, and construction and later maintenance cost is reduced.

The application discloses an Aeromonas media strain capable of degrading PAEs and an application thereof, and belongs to the technical field of microorganisms. The strain is Aeromonas media HJ02, and the preservation number is GDMCC NO: 66828. The strain has obvious advantages in environmental adaptability and PAEs pollutant degradation activity, can efficiently degrade various PAEs and intermediate metabolites, and maintains good growth kinetic characteristics in a 0-120 h culture period. When the initial concentration of diisooctyl phthalate (DEHP) is 300 mg / L, the strain can significantly reduce the residual content of DEHP in the culture system after culture, and the 24 h degradation rate reaches 91.73 %. The application has the advantages of simple operation, safety and economy, provides efficient and stable microbial resources for PAEs pollution remediation, and has important practical value.

The present application relates to the technical field of rubber materials, and specifically discloses an anti-aging rubber material for hydraulic pipes and a preparation method thereof. The anti-aging rubber material is mainly made of the following raw materials in parts by weight: 70-90 parts of hydrogenated nitrile rubber, 10-30 parts of nitrile rubber, 9-11 parts of dioctyl phthalate, 4-6 parts of zinc oxide, 1-3 parts of stearic acid, 2-4 parts of sulfur, 0.3-0.8 parts of peroxide, 0.5-1.5 parts of accelerator, 45-55 parts of white carbon black, 10-20 parts of modified diatomite, and 2-4 parts of antioxidant; the modified diatomite is obtained by treating diatomite with 3-allyloxypropyl trimethoxysilane, N,N'-m-phenylene bismaleimide, and 3-(2-amino-5-bromo-3-pyridyl) ethyl acrylate. The anti-aging rubber material has the advantages of high tensile strength, high tear strength, and good aging resistance through the mutual cooperation between the raw materials, which meets market demand.

The invention discloses a novel steel-plastic composite protective net plastic formula for a coal mine and a manufacturing process. The novel steel-plastic composite protective net plastic formula comprises PVC three-type resin, PVC elastomer, ground calcium carbonate, paraffin, dioctyl phthalate, aluminum hydroxide, magnesium hydroxide, nano calcium carbonate, halogen flame-retardant master batch, fatty acid barium, DOTP, nitrile rubber, antimony oxide, acrylate, CPEB, silicone rubber, stearic acid, PE wax, phthalocyanine blue and high-melting-point wax. According to the formula design, PVC resin and an elastomer are compounded, and the synergistic enhancement effect of heavy calcium carbonate and nano calcium carbonate is combined, so that a rigid-flexible matrix structure is formed; multiple flame-retardant and smoke-suppressing properties are realized; a flame-retardant system is synergistic; the endothermic decomposition effect of aluminum hydroxide and magnesium hydroxide is combined with a gas-phase flame-retardant mechanism of halogen flame-retardant master batch and antimony oxide;

This invention relates to a polyurethane-modified silicone protective material for the outer wall of wind turbine towers, and discloses a method for preparing the same material. The material is prepared by mixing acrylate-hedged phenol-modified trimethyl silicone oil, isocyanate-modified polyether polyol polyurethane, ultrafine silica, nano-alumina, short-fiber glass, triethylamine, benzoyl peroxide, dioctyl phthalate (DOP), phthalocyanine UV absorbers, dibutyltin diethylene (DDBT), and imidazole antifungal agents in a specific weight ratio. This material exhibits excellent weather resistance, mechanical strength, heat resistance, UV resistance, and antifungal properties, making it particularly suitable for the protection of wind turbine towers. The preparation method ensures the stability and consistency of the material's performance by precisely controlling the proportions of each component and the curing conditions. This material effectively improves the UV resistance, corrosion resistance, weather resistance, and overall durability of wind turbine towers, extending their service life and reducing maintenance costs. This invention provides a high-performance protective material for the outer wall of wind turbine towers, which has significant engineering application value. Especially in environments with long-term high humidity, low temperature, and strong ultraviolet radiation, it can significantly improve the stability and service life of the tower. This polyurethane-modified silicone protective material exhibits excellent protective performance in demanding application environments such as wind turbine towers, and has broad market application prospects.