1934 results about "Polystyrene" patented technology

The invention discloses a single-ion conductor polymer, a ternary composite binder solution, high-solid-content sulfide electrolyte slurry and a wet film forming method and application thereof, and belongs to the technical field of all-solid-state lithium batteries. The key technical problems in the wet membrane preparation of the sulfide electrolyte are solved through an innovative solvent-binder synergistic system, and the method specifically comprises the steps that 1, through the synergistic effect of a non-polar solvent and a weak-polar solvent, low-viscosity coating of high-solid-content slurry is achieved while the chemical stability of the sulfide electrolyte is guaranteed; 2, a poly (lithium styrenesulfonate-butyl acrylate), styrene butadiene rubber and polyisobutene ternary composite binder is designed, a lithium ion transmission channel is provided through a lithium sulfonate group, a benzene ring structure in the styrene butadiene rubber enhances the mechanical strength, long-chain alkane in the polyisobutene improves the interface adhesive force, and the mechanical strength is improved; the three components cooperate to realize balance of mechanical and electrochemical properties of the electrolyte membrane, so that the prepared electrolyte membrane has low porosity, high ionic conductivity and mechanical strength.

The invention provides syndiotactic polystyrene resin and a preparation method thereof, a resin composition and a product, the weight-average molecular weight of the syndiotactic polystyrene resin is 1.4 * 10 < 5 > g / mol to 2.2 * 10 < 5 > g / mol, the proportion of the syndiotactic polystyrene resin with the molecular weight larger than 3 times of the weight-average molecular weight is smaller than or equal to 10 wt%, and the proportion of the syndiotactic polystyrene resin with the molecular weight smaller than 0.2 times of the weight-average molecular weight is smaller than or equal to 6 wt%; the supercooling degree delta T of the syndiotactic polystyrene resin is 28 DEG C to 34 DEG C. According to the invention, the weight-average molecular weight of the syndiotactic polystyrene resin, the proportion of the high-molecular-weight syndiotactic polystyrene resin and the proportion of the low-molecular-weight syndiotactic polystyrene resin are controlled in a specific range, and the degree of supercooling is controlled in a specific range; the obtained syndiotactic polystyrene resin has excellent toughness and long-term dimensional stability after demolding.

The invention discloses lactobacillus plantarum capable of relieving enteritis and toxicity of polystyrene nano-plastics, and the preservation number of the lactobacillus plantarum is CGMCC (China General Microbiological Culture Collection Center) NO.31420. The lactobacillus plantarum can be used for relieving enteritis and toxicity of polystyrene nano-plastics. The strain is obtained by separating and purifying baby feces, and can grow on an MRS culture medium, and the bacterial colony is round, off-white, smooth and opaque. Experiments show that the lactobacillus plantarum can effectively adsorb PS-NPs, promote the PS-NPs to be discharged along with excrement, reduce accumulation of the PS-NPs in organs, and significantly reduce toxicity and inflammatory response of organs such as liver and kidney of mice. In addition, the strain can repair the intestinal barrier function, regulate liver metabolism and relieve enteritis symptoms. The invention further provides a probiotic preparation containing the strain, and the probiotic preparation can be prepared into granules, capsules, tablets or oral liquid and the like and is used for preventing or treating intestinal injury and inflammatory diseases caused by PS-NPs. The strain is safe and efficient, and has a wide application prospect.

The invention provides a diaphragm and a preparation method thereof and a lithium ion battery, the diaphragm comprises a base membrane layer and a composite functional layer, the composite functional layer comprises hydrophobic SiO2 aerogel modified by a hydrophobic agent, a conductive ion polymer and a solid electrolyte, and the composite functional layer respectively accounts for 3-12wt%, 0.5-1.0 wt% and 0.5-1.5 wt% of the total mass of the diaphragm; the hydrophobic agent comprises trimethylchlorosilane, hexamethyldisilazane, perfluorooctyltriethoxysilane, polyvinylidene fluoride, polydimethylsiloxane and the like, the conductive ionic polymer comprises polyvinylpyrrolidone, lithium polymethacrylate, lithium polystyrene sulfonate, polyacrylamide and the like, and the solid electrolyte comprises lithium lanthanum titanium oxide, lithium lanthanum zirconium oxide, lithium lanthanum zirconium tantalum oxide and the like. The wettability is improved by the high porosity of the hydrophobic SiO2 aerogel, the stability and strong conductivity of a physical conductive network of the solid electrolyte and the ion affinity and amphoteric binding capacity of the conductive ion polymer are optimized, the electrochemical performance and thermal stability of the interface are optimized, and comprehensive optimization of the thermal-electric-interface performance of the diaphragm is realized through combination.

The invention provides an adsorbent capable of simultaneously adsorbing bilirubin and cytokines and a preparation method and application thereof, and the preparation method comprises the following steps: carrying out suspension polymerization reaction on a styrene monomer and a polyvinyl cross-linking agent in a dispersion medium under the action of a continuous multi-component pore-foaming agent and an initiator to prepare polystyrene-based macroporous resin; carrying out chloromethylation reaction on the polystyrene-based macroporous resin to prepare chlorine balls; carrying out post-crosslinking reaction on the chloromethylated beads to prepare the adsorbent capable of adsorbing bilirubin and cytokines at the same time; the continuous multi-component pore-foaming agent comprises a first pore-foaming agent, a second pore-foaming agent and a third pore-foaming agent of which the solubility parameters are gradually increased in sequence; the temperature of the suspension polymerization reaction is adjusted according to the mass fraction of the polyvinyl cross-linking agent in the monomer mixture and the solubility parameter of the continuous multi-component pore-foaming agent, and the monomer mixture is composed of styrene monomers and the polyvinyl cross-linking agent. The bilirubin and cell factors can be adsorbed at the same time, and the safety of blood purification is improved.

The invention discloses a method for synthesizing electronic-grade ethyl acetate through catalytic esterification of acidic ion exchange resin, and belongs to the technical field of ethyl acetate preparation. The method comprises the following steps: mixing crosslinked polystyrene white balls and a swelling agent, and dropwise adding concentrated sulfuric acid for reaction to obtain S-PS resin; mixing an EDTA disodium salt saturated solution and a polyacrylic acid solution, adding a cross-linking agent and an emulsifier, and carrying out a cross-linking curing reaction to obtain EDTA microcapsules; the preparation method comprises the following steps: dispersing S-PS resin in a solvent, adding EDTA microcapsules, a dehydration condensation agent and a catalyst, reacting under the protection of inert gas, and filtering and recovering after the reaction is finished to obtain S-PS-EDTA resin; mixing glacial acetic acid, absolute ethyl alcohol and S-PS (at) EDTA resin for reaction, and filtering and collecting liquid after the reaction is finished; and rectifying the collected liquid to obtain the product. According to the method provided by the invention, metal impurities can be chelated in the synthesis process, and the electronic-grade ethyl acetate with high purity and low impurity content is produced.

The invention discloses a method for degrading polystyrene (PS) plastic and upgrading and recycling the PS plastic into benzoic acid based on nano MnO2 photocatalytic ozonation, and belongs to the technical field of solid waste recycling. The method comprises the following steps: firstly, mixing PS plastic fragments with nano MnO2 and an organic solvent, then simultaneously introducing ozone into a reaction system at normal temperature and normal pressure, and irradiating with light. Through synergistic catalysis of light and ozone, molecular chains of the PS plastic can be efficiently and selectively broken and oxidized, and finally the PS plastic is directionally converted into benzoic acid with high additional value. After the reaction is finished, a benzoic acid product can be obtained through simple separation, concentration and purification steps. The method provided by the invention realizes high-valued recycling of the waste PS plastic under mild conditions, solves the problems of high energy consumption, complex products, easy generation of secondary pollution and the like in a traditional treatment method, and has the outstanding advantages of green process, efficient reaction, high product value and the like.

The utility model relates to a lighting, heat-insulating and waterproof window well of a building and belongs to the technical field of window wells. Comprising a basement wall and a lighting assembly, window wells are arranged on the basement wall, the lighting assembly comprises lighting windows and suspended ceilings, the lighting windows and the suspended ceilings are located at the tops and the bottoms of the window wells respectively, the window wells comprise the upper window wells and the lower window wells, and the lower window wells are in a horn shape; a waterproof heat preservation assembly is arranged between the window well and the basement wall, a drainage pipe penetrating through the waterproof heat preservation assembly is arranged in the basement wall, the waterproof heat preservation assembly comprises a waterproof roll layer, a cement mortar smearing layer and a graphite polystyrene board, and the cement mortar smearing layer and the graphite polystyrene board conduct heat preservation on the window well. According to the building daylighting heat-preservation waterproof window well, the daylighting efficiency and uniformity are improved through the design of the outwards-convex-pyramid-shaped daylighting window and the horn-shaped lower window well, the waterproof heat-preservation assembly is combined with the graphite polystyrene board, heat transfer is effectively prevented, the heat-preservation performance is enhanced, and meanwhile the waterproof effect is improved through the waterproof roll layer and the cement mortar smearing layer.

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

The invention relates to the technical field of expanded polystyrene production, and discloses an expanded polystyrene automatic molding control system and method.The system comprises a detection module, a data analysis module and a central control module, and the detection module collects mold temperature distribution, molded blank local density and steam pressure data in real time; the data analysis module calculates a temperature fluctuation index according to the temperature data, obtains a dynamic density compensation coefficient by means of a density model, and determines a forming quality deviation level; and the central control module adjusts the steam heating power according to the deviation level, determines and corrects the mold opening and closing rate in combination with the pressure and density change rate, and generates a motion trail control parameter. The method comprises the steps of data acquisition, calculation and analysis, parameter adjustment and instruction output. Through multi-parameter cooperative control, forming automation and precision are achieved, the quality stability and the production efficiency are improved, and the method is suitable for production of related products.

The invention relates to polystyrene cation exchange resin as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a dispersing agent in a solvent to obtain a dispersed phase for suspension polymerization reaction, uniformly mixing a reaction monomer, a cross-linking agent, a pore-foaming agent and an initiator, and carrying out suspension polymerization reaction under segmented stirring and segmented temperature change to prepare copolymer microspheres; and putting the dried microspheres into a reaction kettle, swelling, carrying out sulfonation reaction through a variable temperature program on the basis to obtain sulfonated microspheres, and carrying out alkali exchange reaction on the sulfonated microspheres to obtain the final product cation exchange resin. Compared with the prior art, the cation exchange resin preparation method provided by the invention has the characteristics of simple and feasible process, easiness in large-scale production, low cost, high specific surface area, high adsorption capacity and high separation efficiency, and is especially suitable for separating and purifying substances containing amino groups or aminoglycosidic bonds.

The invention belongs to the technical field of composite materials, and particularly relates to a composite material for a high-performance cone crusher lining plate and a preparation method of the composite material. The composite material is prepared from the following components in parts by weight: 70 to 90 parts of semi-aromatic polyamide, 20 to 30 parts of fiber reinforced filler, 10 to 20 parts of flexibilizer, 10 to 20 parts of brominated polystyrene, 10 to 15 parts of graphene, 1 to 5 parts of diatomite nanoparticles, 2 to 6 parts of metal compound flame-retardant aid, 0.5 to 3 parts of coupling agent, 0.5 to 3 parts of lubricant and 0.5 to 3 parts of antioxidant. The graphene and diatomite nanoparticles are added into the brominated polystyrene flame-retardant resin, so that the dispersity of brominated polystyrene and the compatibility of the brominated polystyrene and polyamide resin can be improved, the flame retardance and thermal stability of the composite material are improved, and the mechanical property of the composite material can be improved; and the use requirements of devices in equipment such as a cone crusher lining plate are met.

The invention belongs to the technical field of high polymer materials, and particularly relates to a lightweight high-strength expandable polystyrene material and a preparation method thereof. The high-temperature-resistant foaming material is prepared from the following components in parts by weight: 90 to 100 parts of styrene, 200 to 250 parts of deionized water, 0.3 to 0.6 part of a dispersing agent, 1.5 to 2.5 parts of a nucleating agent, 0.2 to 0.6 part of an initiator, 0.2 to 0.5 part of a particle size regulator, 4 to 7 parts of a foaming agent and 3 to 6 parts of composite filler, the composite filler is prepared by mixing modified graphene and modified silicon dioxide; the modified graphene is maleic anhydride copolymer sulfonate modified graphene, and the modified silicon dioxide is polydopamine / carboxymethyl cellulose modified silicon dioxide; the water dispersibility and interfacial compatibility of the composite filler are remarkably improved in a physical and chemical grafting manner, and the mechanical property, thermal stability and flame retardance of the polystyrene material are synchronously optimized by utilizing a multi-component synergistic effect.

The invention belongs to the field of biomedical materials, and discloses a hydrogel patch with piezoelectricity, conductivity and high adhesion and a preparation method and application of the hydrogel patch. Polyvinyl alcohol (PVA) and acrylic acid (AA) serve as polymer frameworks of the hydrogel patch; the invention relates to a nano-zinc oxide / poly (3, 4-ethylenedioxythiophene) / poly (styrenesulfonic acid) (PEDOT: PSS) composite conductive adhesive, which comprises nano-zinc oxide (ZnO) as a piezoelectric material, poly (3, 4-ethylenedioxythiophene)-poly (styrenesulfonic acid) (PEDOT: PSS) as a conductive material, and N-hydroxysuccinimide acrylate (NHS-AA) as an adhesive functional monomer. According to the invention, active ester groups in the N-hydroxysuccinimide acrylate are utilized, so that the patch can quickly form covalent amido bonds with amino groups on the surface of a tissue in a dry state, firm adhesion is realized, local nerve repair can be effectively promoted through a piezoelectric effect, a novel ideal material is provided for disease treatment, and the patch has wide application prospects. Wide clinical application prospects are realized in the field of biological medicines.

The invention relates to the technical field of ceramic glaze water, in particular to ceramic glaze water capable of continuously releasing negative ions based on a rare earth material and a preparation method of the ceramic glaze water. Comprising a negative ion material, sodium polystyrenesulfonate, an immobilized bacterium preparation, carbon nanotube modified graphene oxide, turbo stone, modified sepiolite, nano-zinc oxide, sodium hexametasilicate, polyethylene glycol, a composite antioxidant, a coalescing agent, a slow-release carrier and deionized water. The negative ion material is formed by mixing low-radioactivity commercial rare earth powder, tourmaline and opal according to the mass ratio of (3-4): (4-5): 1. According to the invention, the preparation cost of the glaze water is reduced and the production efficiency is improved by optimizing the composition and compounding mode of the negative ion material, enhancing the stability of the bacterial preparation and simplifying the preparation process, meanwhile, the negative ion release durability, the ceramic surface adhesive force and the antibacterial property are remarkably enhanced, and the requirements of industrial production and practical application are met.

The invention discloses a light diffusion polystyrene composite material with a low thermal expansion coefficient, a preparation method thereof and an application of the light diffusion polystyrene composite material in extrusion molding of a frameless television display screen backlight plate. The composite material is prepared from the following raw materials in parts by mass: 35 to 45 parts of GPPS (General Purpose Polystyrene) resin, 20 to 30 parts of HIPS (High Impact Polystyrene) resin, 8 to 15 parts of PPO (Polyphenylene Oxide) resin, 3 to 5 parts of compatilizer, 5 to 10 parts of light diffusant, 5 to 15 parts of filling mineral and 3 to 5 parts of liquid crystal polymer fiber, the filling minerals comprise one or more than two of high-whiteness nano synthetic mica, nano boehmite and magnesium sulfate whiskers; the whiteness L value of the high-whiteness nano synthetic mica is gt; 92; the average length of the magnesium sulfate whisker is 10-60 [mu] m, and the length-diameter ratio is gt; 30.

The application discloses a kind of flame-retardant expandable polystyrene and its preparation method.It includes the following raw materials: styrene, nucleating agent, desalted water, organic compound containing peroxide functional group, inorganic salt, bromine flame retardant, dispersant, solvent.The product powder and bulk material prepared by the application are less, and the prepared polystyrene board has excellent mechanical properties.After one week or even one month, no collapse, deformation and other phenomena occur, the combustion performance completely reaches B level, and has efficient flame-retardant fireproof performance.Meanwhile, the product obtained by the application has high bromine content, good thermal stability, low bleeding, no toxicity, little influence on material mechanical properties, and no toxic gas such as polybrominated dibenzo-p-dioxin and polybrominated dibenzofuran is produced during thermal cracking or combustion, which completely meets the requirements of European dioxin regulations and does not harm the environment.

The invention relates to a renewable industrial flue gas carbon dioxide adsorbent and a preparation method thereof. The method comprises the following steps: S1, mixing alkali metal, an aluminum oxide precursor, silicon oxide and a first solvent, or mixing an alkali metal solution, the aluminum oxide precursor, the silicon oxide and an optional second solvent, and then molding the mixed material to obtain microsphere particles; s2, mixing the microsphere particles and organic amine, and carrying out first loading treatment and drying treatment to obtain an organic amine loaded material; s3, roasting the organic amine-loaded material, mixing the obtained roasted material with a carrier material, and carrying out second loading treatment, so as to obtain the carbon dioxide adsorbent, the carrier material is selected from at least one of polystyrene-polyacrylic acid-polyethylene oxide, polymethyl methacrylate-b-polystyrene, zirconium oxide and a porous ceramic material. The carbon dioxide adsorbent is relatively high in adsorption capacity and relatively good in selectivity, reproducibility and stability; and large-scale industrial production and application are facilitated.

The invention discloses a high-performance Mg < 2 + > / Li < + > separation nanofiltration membrane and a preparation method thereof, the Mg < 2 + > / Li < + > separation nanofiltration membrane is a polymer composite membrane, and is composed of a surface separation layer and a support layer; the surface separation layer is formed by self-assembling a polycation electrolyte and a polyanion electrolyte layer by layer, the supporting layer is formed by ultraviolet grafting of any one or two of sodium polystyrene sulfonate, polymethylacrylic acid 3-sulfonic acid propyl ester potassium salt and polyacrylic acid on the surface of a hydrophobic polymeric membrane, and the surface of the supporting layer is negatively charged. The negative charge amount of the supporting layer is gradually reduced from top to bottom; the whole separation membrane has the characteristics that the upper layer is hydrophilic and the lower layer is hydrophobic. By adjusting the charge density and aperture of the supporting layer, the structure of the surface separation layer is influenced, the charge repulsion effect, aperture screening effect and built-in electric field intensity of the whole membrane are enhanced, and the Mg < 2 + > / Li < + > separation factor is increased. Permeation and rapid transportation of water are promoted by virtue of a hydrophilic upper-layer and hydrophobic lower-layer structure, and the membrane flux is improved; the preparation process is simple, and the used solvent is water, so that the method is green and environment-friendly and has a good application prospect.

The invention discloses a method for catalyzing melamino-formaldehyde resin methylation reaction by solid acid. According to the invention, epoxy silane coupling agent grafted modified nanocellulose is introduced into sulfonated styrene-divinyl benzene cross-linked copolymer microspheres for in-situ crystal cross-linking, so that the problems that the traditional sulfonated polystyrene resin is poor in mechanical strength and solution solubility resistance, low in cycle index, easy to swell and fall off and the like are effectively solved; the prepared solid acid resin has the characteristics of high reaction activity, high proton transfer rate, high mechanical strength, high cyclicity and easiness in solid-liquid separation, and by utilizing the solid acid resin to catalyze the etherification reaction of the melamino-formaldehyde resin, the reaction temperature and the production energy consumption are reduced, the reaction time is shortened, the product quality and the production efficiency are improved, and the production cost is reduced. The problems of environmental protection and energy consumption caused by the generation of a large amount of VOCs in the etherification reaction of the traditional liquid catalyst for synthesizing the high-etherified melamine formaldehyde resin and the by-product inorganic salt in the subsequent process are solved.

The invention discloses a method for preparing 1, 3-propylene glycol by hydrating and hydrogenating acrolein, which comprises the following steps: carrying out hydration reaction by taking an acrolein aqueous solution as a raw material and taking acylated and aminated modified polystyrene resin as a catalyst; carrying out flash evaporation or gas stripping on the product after the reaction to remove acrolein, condensing and recovering the removed acrolein, and carrying out hydrogenation reaction on the acrolein-removed mixed solution serving as a hydrogenation raw material on a metal catalyst; and after the reaction is finished, performing flash evaporation on the product to remove water and light components, and performing vacuum rectification to obtain a high-purity 1, 3-propylene glycol product. According to the method, the modified resin is used for catalyzing the acrolein hydration reaction, the overall yield of the 1, 3-propylene glycol can be increased, the catalyst modification process is simple, the cost is low, the additional value of the final product is high, and the method is suitable for industrial production.

The application relates to the technical field of ceramic materials, and provides a SiC-whisker-reinforced alumina ceramic material with whisker directional arrangement and a preparation method thereof. SiC whiskers are magnetically modified by being coated with cobalt, then the magnetically modified SiC whisker powder is mixed with Al2O3 ceramic slurry which has been ball milled, and sodium polystyrene sulfonate is added to the mixture for sufficient mixing in a dispersing machine. Then, an electric field and a magnetic field are simultaneously applied to the mixed solution, so that the SiC whiskers are turned under the action of the electric field and the magnetic field, and directional arrangement of the SiC whiskers in a certain direction is realized. The solution is immediately transferred into a freeze-drying machine to freeze and fix the directional arrangement, and then vacuum sublimation drying is carried out at low temperature, so that the Al2O3-Y2O3-SiC ceramic material with SiC whisker directional arrangement is prepared. w The mixed powder is subjected to hot-pressing sintering to prepare the SiC-whisker-reinforced alumina ceramic material with obvious whisker directional arrangement. The ceramic material can be used for preparing a ceramic cutting tool, and is used for high-efficiency cutting of a nickel-based high-temperature alloy.

The invention discloses SIS (styrene-isoprene-styrene) containing dynamic reversible bonds and a preparation method thereof, and belongs to the technical field of high polymer materials. The copolymer is prepared through a Diels-Alder reaction with bismaleimide on the basis of a polystyrene construction unit with two tail ends capped with furan and a polyisoprene construction unit module with two tail ends capped with furan. Wherein the DA bond has a thermal reversible characteristic. The furan end-capped building unit module with controllable molecular weight and narrow distribution is prepared, and reversible connection and dissociation of blocks are realized through a modularization strategy. According to the invention, an inverse Diels-Alder reaction can be carried out at 120-140 DEG C, and is dissociated into an original construction unit module, so that the proportion of soft and hard segments of a copolymer is changed by supplementing a specific construction unit feeding amount and carrying out the Diels-Alder reaction again; the SIS has the advantages of being accurate in structure and designable in performance at the same time, flexible regulation and control over the block proportion are achieved through the SIS containing the dynamic reversible bonds, and meanwhile the SIS has wide application prospects in the fields of recyclable adhesives, intelligent packaging, flexible electronics and the like.

The invention discloses a method for preparing radiation-resistant polystyrene resin and controlling the aperture of the radiation-resistant polystyrene resin. The preparation method of the radiation-resistant polystyrene resin comprises the following steps: fully dissolving polyvinyl alcohol in deionized water, adding an organic phase containing styrene and the like into the deionized water, uniformly stirring and mixing, heating and carrying out a synthetic reaction to prepare non-porous matrix microspheres, and carrying out pore-forming and surface modification treatment on the matrix microspheres. Compared with the prior art, rapid preparation of the radiation-resistant porous mass transfer resin is achieved through two steps, the high grafting rate is kept through accurate control over a cross-linked skeleton, meanwhile, radiation resistance is considered, and the method has the advantages that the process is simple, the cost is low, the particle size is controllable and narrow in distribution, relevant parameters are easy to standardize, and the method is suitable for industrial amplification.

A curable resin composition contains quantum dots (A), a resin (B), a photopolymerizable compound (C), a photopolymerization initiator (D), an antioxidant (E), a leveling agent (F), and a solvent (G), wherein the resin (B) has a weight-average molecular weight in terms of polystyrene of less than 10000 and an acid value of 90 mg KOH / g or more and 150 mg KOH / g or less.

The invention relates to the technical field of rail transit rubber materials, and particularly discloses a rubber isolation layer material for a ballastless track and a preparation method, the rubber isolation layer material comprises the following components by weight: 60-70 parts of ethylene propylene diene monomer, 20-30 parts of polystyrene, 30-40 parts of nitrile rubber / polylactic acid thermoplastic elastomer, 20-30 parts of porous polymer microspheres, and 15-20 parts of maleic anhydride grafted graphene oxide. The material is prepared from 10-15 parts of organic montmorillonite, 3-4 parts of a vulcanization activator, 3-4 parts of an anti-aging agent, 3-4 parts of a vulcanization accelerator, 1-3 parts of a vulcanizing agent, 4-6 parts of a dispersing agent and 3-6 parts of a foaming agent. By adding various creatively combined reinforcing fillers into the ethylene propylene diene monomer, the mechanical properties such as hardness, tensile strength, static rigidity and the like and the insulation and shock absorption properties of the isolating layer are greatly improved, and meanwhile, carbon black does not need to be added, so that the problems that the resistance of a product is reduced and the insulation property becomes poor after the carbon black is added are avoided.

The invention discloses a method for catalyzing degradation of polyolefin mixed plastic by using molten salt. The catalyst is composed of gallium chloride or gallium chloride and other metal chlorides, has a low melting point, high fluidity and strong Lewis acidity, and can degrade polyethylene (PE), polypropylene (PP), polystyrene (PS) plastics and mixtures thereof at 70-170 DEG C under a solvent-free condition to obtain C4-C16 + alkane, olefin and aromatic hydrocarbon. The method is suitable for actual waste plastic resource recovery, and has the advantages of mild conditions, low energy consumption, product controllability and the like.

The invention provides viscose large biological fibers containing olive active ingredients and a preparation method of the viscose large biological fibers. The fibers comprise viscose fiber matrixes and composite microcapsules dispersed in the viscose fiber matrixes. The composite microcapsule comprises a core load unit and an alkali-resistant encapsulation layer, the core loading unit is a metal organic framework crystal coated with a porous silicon dioxide shell layer on the surface, the metal organic framework crystal is formed by coordination of an organic ligand and zinc ions, and the olive extract is loaded in a pore channel of the core loading unit; the alkali-resistant packaging layer coats the outer surface of the core load unit and is a polyelectrolyte multilayer film formed by alternately depositing chitosan quaternary ammonium salt and sodium polystyrenesulfonate. The preparation method comprises the following steps: preparing the composite microcapsule, mixing the composite microcapsule with a viscose spinning solution and a hydroxyethyl cellulose compatilizer, and spinning to obtain the fiber. Through the design of the core load unit and the alkali-resistant encapsulation layer, the technical problem that the olive extract is easy to inactivate and difficult to slowly release for a long time in a strongly alkaline spinning environment is solved.

The invention provides an ultrathin temperature-sensitive hydrogel flexible electrode and a preparation method thereof, and belongs to the technical field of hydrogel electrodes. The preparation method comprises the following steps: mixing monomer acryloyl glycinamide and acrylic acid, and dissolving in deionized water to obtain a mixed solution A; adding a chemical cross-linking agent and a poly (3, 4-ethylenedioxythiophene)-poly (styrene sulfonate) solution into the mixed solution A to obtain a mixed solution B; adding sodium sulfate and tannic acid into the mixed solution B to obtain a prepolymerization solution; adding an initiator into the pre-polymerized solution to obtain a polymerized solution; the preparation method comprises the following steps: adding thermoplastic polyurethane particles into a mixed solution of N, N-dimethylformamide and tetrahydrofuran to form a precursor solution, and carrying out electrostatic spinning on the precursor solution to obtain a film matrix; and coating the polymerization solution on the surface of a thin film substrate, and packaging a conductive copper foil to obtain the ultrathin temperature-sensitive hydrogel flexible electrode. The mechanical property and the adhesion property of the flexible electrode are improved, and the adhesion strength can be dynamically adjusted by regulating and controlling the temperature.

To provide a rubber composition with excellent on-ice performance. To solve the above issue, the present disclosure contains a rubber component, a fatty acid amide, and a liquid polymer with a polystyrene-equivalent weight average molecular weight measured by gel permeation chromatography of 5,000 or more and less than 40,000.