1253 results about "Xylylene" patented technology

The invention relates to a preparation method of a graphene oxide loaded nanoparticle functional anticorrosive coating. The preparation method comprises the following steps: (1) preparing a graphene oxide loaded nanoparticle composite material; and (2) preparing the anticorrosive coating, namely weighing dimethylbenzene, n-butyl alcohol and filler according to a ratio, performing ultrasonic treatment, weighing epoxy resin, continuously performing ultrasonic treatment and stirring, dropwise adding a defoaming agent, a flatting agent, a wetting dispersant and a curing agent, stirring, standing, and spraying on the surface of a matrix to serve as the anticorrosive coating. According to the anticorrosive filler prepared by the preparation method, the problem that graphene oxide agglomerates in a coating is solved, nano-particles are introduced to optimize a coating structure, micropores and microcracks in the coating are filled, the compactness of the coating is enhanced, defects in the coating are reduced, and the protective performance of the coating is improved.

The invention relates to a polymer binder for a sulfide solid-state battery as well as a preparation method and application of the polymer binder. The binding agent is formed by copolymerizing vinyl triethoxy silane, 4-vinyl phenylboronic acid lithium and styrene. Silane groups are introduced, the interface adhesiveness with sulfide electrolyte is enhanced through the coupling effect of the silane groups, meanwhile, water in a system is consumed through a condensation reaction, and the water content of an electrolyte membrane is reduced; 4-vinyl phenylboronic acid lithium provides dissociation lithium ions, the ionic conductivity of the binder is improved, and the negative influence on the conductivity of sulfide electrolyte is reduced; the styrene group improves the solubility of the binder in a non-polar solvent. The binder can be dissolved in solvents such as toluene, xylene and the like, and is mixed with sulfide electrolyte to form a film through a wet coating process, and the process compatibility is high. The binder disclosed by the invention has the characteristics of high cohesiveness, ionic conductivity and low water content, and the interface stability and electrochemical performance of the sulfide solid-state battery can be remarkably improved.

The invention discloses a wear-resistant high-strength composite polyurethane sieve plate and a preparation method thereof, and belongs to the technical field of polyurethane sieve plate processing.The preparation method comprises the following steps that modified polyurethane is added into xylene, the temperature of a reaction system is increased to 90-100 DEG C, stirring is conducted till the system is dissolved and clarified, and a polyurethane sieve plate is obtained; the preparation method comprises the following steps: adding olefin double bond modified aluminum oxide powder and a catalyst into a reaction system, taking composite polyurethane prepared from modified aluminum powder reinforced modified polyurethane as a polyurethane sieve plate base material, and carrying out reinforced crosslinking on the composite polyurethane by using o-cresol formaldehyde epoxy resin and modified nylon fiber; the strong acid and alkali corrosion resistance of the composite polyurethane sieve plate is effectively improved, and the service life of the composite polyurethane sieve plate is effectively prolonged.

The invention relates to a high-temperature ablation resistant ceramic matrix composite material and a preparation method thereof. The method comprises the following steps: preparing a rare earth acetylacetone complex from hexahydrate of rare earth chloride (rare earth nitrate) and acetylacetone; uniformly mixing the rare earth acetylacetone complex with poly (hafnium) oxane by using xylene to obtain a zirconium (hafnium)-rare earth ceramic precursor solution; densifying the porous carbon fiber preform by using a zirconium (hafnium)-rare earth ceramic precursor solution through a precursor impregnation and pyrolysis process to obtain a carbon fiber reinforced carbide ceramic-rare earth zirconium (hafnium) acid salt ceramic-based composite material; and densifying the carbon fiber reinforced carbide ceramic-rare earth zirconium (hafnium) acid salt ceramic-based composite material by using molybdenum chloride and silicon chloride through a chemical vapor infiltration method to prepare the high-temperature ablation resistant ceramic-based composite material. The prepared ceramic-based composite material has excellent high-temperature oxidation ablation resistance and excellent high-temperature mechanical properties at the temperature of 2000 DEG C or above.

The invention relates to the technical field of drilling fluid cooling, and discloses a phase change microcapsule suitable for drilling fluid cooling and a preparation method thereof.The phase change microcapsule comprises a capsule wall stabilizing material and a capsule core phase change material, and the capsule wall stabilizing material comprises polyurethane, polyurea, polyamide, polyimide, polystyrene and a first organic solvent; the capsule core phase change material comprises paraffin, fatty acid, polyol, inorganic hydrated salt, polymer gel, expanded graphite, carbon nanotubes, metal nanoparticles and a second organic solvent, and the first organic solvent is at least one of toluene, xylene, cyclohexanone and the like. The temperature of the drilling fluid is kept at a relatively low level, the cooling of the drilling fluid is realized, so that the drilling efficiency is improved, harmful solvents and additives are not used in the preparation process of the phase-change microcapsules, the phase-change microcapsules are pollution-free to the environment, and the requirements of greenness and environmental protection are met.

A method of manufacturing a free-standing, sheet-type solid-state electrolyte is provided. The method includes: mixing a sulfide ion conductor-containing material and a non-polar or low-polar binder in a solvent to obtain a slurry composition; disposing the slurry composition onto a planar substrate; spreading the slurry composition on the substrate to obtain a film; calendering the film to densify the film; and subsequently drying the film under vacuum. The binder may be polyisobutylene and may be present in the slurry composition in an amount of up to 10 wt. %, optionally between 1 and 5 wt. %. The sulfide ion conductor-containing material may be a lithium argyrodite having the chemical formula Li6PS5X in which X is Cl, Br, or I. The solvent may be toluene or xylene. The film may have a thickness of between 10 and 200 μm.

The invention relates to the technical field of ton bag lining materials, and particularly discloses a shielding antistatic ton bag lining bag and a preparation method thereof. The invention relates to a shielding antistatic ton bag lining bag, which is prepared by processing a multi-layer composite film with a structure of PET / antistatic layer / PA / PE, and the antistatic layer is prepared from the following raw materials by weight: 40-75 parts of a resin material; 20 to 40 parts of filler; 5-10 parts of a color master batch; 1-3 parts of an antistatic agent; 2-5 parts of a dispersant; 0.2 to 0.4 part of an antioxidant; 4 to 6 parts of polyimide nanofiber; 1-3 parts of a modified carbon nanotube; the modified carbon nanotube is prepared by the following method: S1, pretreating a carbon nanotube raw material with a concentrated nitric acid solution to obtain a pretreated carbon nanotube; and S2, dispersing the pretreated carbon nanotubes in xylene, then adding deionized water and p-toluenesulfonic acid, then adding an aniline monomer, then adding ammonium persulfate, and carrying out a reaction to obtain the composite material after the reaction is finished. The shielding anti-static ton bag lining bag can keep stable anti-static performance under the influence of a severe temperature change environment.

The invention provides a film stripping liquid and a preparation method thereof. The film stripping liquid is composed of a solubilizer, a metal corrosion inhibitor, a surface leveling agent and an organic solvent. Wherein the solubilizer can be a combination containing benzene series, so that the solubility of the photoresist in an organic solvent can be improved, and the service life of the stripping liquid is prolonged. The surface leveling agent is one or more of 1, 3-propylene glycol, 2-phenyl-1, 3-propylene glycol and 2-amino-1, 3-propylene glycol, and is used for improving the uniformity of the film stripping liquid in the film stripping process and avoiding the uneven concave-convex phenomenon on the surface of the photoresist. The metal corrosion inhibitor can be selected from azole or polyphenol compounds and can inhibit corrosion of metals such as Cu and Ag in the film stripping process; and the organic solvent is a combination of xylene and dichloromethane and is mainly used for dissolving and removing the expanded and fallen photoresist. According to the film stripping liquid provided by the invention, the glue stripping speed can be increased, the glue stripping uniformity can be remarkably improved, in addition, metals can be effectively protected from being corroded, and the corrosion speed of the metals such as Cu and Ag is controlled to be limited below 1 A / min.

The present invention relates to a method for preparing a attapulgite / molecular sieve composite adsorbent, comprising the following steps: (1) using NaX molecular sieve powder as a raw material, adding purified attapulgite, grinding, adding an aluminum source for crystallization, filtering, washing to a pH of 7 to 8, and drying to obtain a attapulgite / molecular sieve composite adsorbent precursor; (2) exchanging the composite adsorbent precursor obtained in step (1) with metal cations, and then filtering, washing, drying, molding, and activating to obtain the composite adsorbent. The composite adsorbent has a simple preparation method, a large adsorption capacity, and good selectivity. It can effectively adsorb and separate liquid mixtures, and has broad application prospects in selectively adsorbing and separating p-xylene from C8 aromatic isomers. The present invention also relates to a attapulgite / molecular sieve composite adsorbent and its application in adsorbing and separating p-xylene in mixed xylene.

The invention provides a zirconium boride / graphene complex-phase wear-resistant and high-temperature-resistant ceramic material and a preparation method thereof, and belongs to the technical field of ceramics. The preparation method comprises the following steps: pretreating graphene, preparing titanium dioxide / graphene microspheres, modifying the titanium dioxide / graphene microspheres, functionalizing the titanium dioxide / graphene microspheres, preparing a ceramic mixture, molding and sintering. The step of functionalizing the titanium dioxide / graphene microspheres comprises the following steps: putting the modified titanium dioxide / graphene microspheres into xylene, adding bisphenol A epoxy resin and triphenylphosphine, raising the temperature, carrying out stirring reaction, filtering out, washing, putting into N, N-dimethylformamide, uniformly stirring, adding gallic acid and p-toluenesulfonic acid, and carrying out ultrasonic treatment to obtain the titanium dioxide / graphene microspheres. Raising the temperature for reaction, filtering, washing and drying after the reaction is finished, so as to prepare functionalized titanium dioxide / graphene microspheres; the prepared ceramic material is high in strength, good in wear resistance and excellent in high temperature resistance.

The invention relates to an aromatic hydrocarbon isomer adsorbent containing a modified X-type molecular sieve. The outer surface area of the modified X-type molecular sieve is 9.5-19m < 2 > / g, and the sum of the pore volume of mesopores and the pore volume of macropores is 6%-18% of the total pore volume. The p-xylene adsorbent comprises 88-95% by mass of a modified X-type molecular sieve, 4-11% by mass of a crystal transformation X-type molecular sieve and 1-3% by mass of a matrix. The invention also relates to a preparation method of the adsorbent and application of the adsorbent in adsorption separation of p-xylene from mixed C8 aromatic hydrocarbons.

The invention belongs to the technical field of biochar oxygen-releasing materials, and particularly relates to a biochar-based oxygen-releasing material for gleying soil improvement as well as a preparation method and application of the biochar-based oxygen-releasing material. The biochar-based oxygen release material is a CaO2 at phosphorus-rich biochar material obtained by taking modified phosphorus-rich biochar as a carrier and combining with calcium peroxide, and has remarkable beneficial effects in the field of gleying rice field improvement. According to the biochar-based oxygen release material, the mass fraction of calcium peroxide is remarkably increased, so that the oxygen release function of the material is enhanced, and the biochar-based oxygen release material has important significance for improving the ventilation condition of a rice field and promoting the growth of a rice root system. In the preparation process, raw materials such as dimethylbenzene and polyethylene which may cause soil pollution and ecological problems are avoided, and the environment-friendly concept is embodied. Meanwhile, the modified biochar not only serves as a carrier to improve the loading capacity of calcium peroxide, but also has the function of releasing a phosphate fertilizer, and is beneficial to improvement of the soil fertility of the rice field and increase of the rice yield.

The utility model relates to the technical field of mixed xylene refining and purifying, in particular to a mixed xylene refining and purifying device. Comprising a shell, the upper end of the shell fixedly communicates with an inlet pipe, the lower end of the shell fixedly communicates with an outlet pipe, a temperature control assembly is arranged in the upper portion of the shell, and an interception assembly is arranged in the lower portion of the shell and communicates with a condenser. By monitoring the temperature of the heat-conducting medium in the oil outlet pipe in real time, the high-temperature gaseous water-containing mixed xylene can be effectively cooled.

The present invention relates to an organic salt of p-xylylene dichorsulfonic acid, which can be used in a cosmetic composition for blocking ultraviolet rays, and a preparation method thereof. The invention provides an organic salt of p-xylylene dichorsulfonic acid, which is a neutralization product obtained by combining an organic amine compound with a strongly acidic p-xylylene dichorsulfonic acid aqueous solution with the pH value of 1 in an aqueous solution phase or a powder phase, and the pH value of the organic salt is 5.0-9.0. Therefore, when cosmetics are produced, no extra neutralizer is needed, convenience and safety are achieved, excellent long-term storage stability is achieved, and consistent prescriptions, especially in cosmetic formulas, can be achieved.

This invention belongs to the field of coating technology, specifically relating to a moisture-proof and stain-resistant acrylic resin coating and its preparation process. The moisture-proof and stain-resistant acrylic resin coating comprises 100 parts by weight of a main agent and 20-25 parts by weight of a curing agent. The main agent comprises the following raw materials in weight percentages: dispersant 1.5-3%, butyl acetate 10-15%, xylene 5-10%, filler 10-20%, titanium dioxide 10-20%, carbon black 1-5%, cellulose acetate butyrate 1-2%, anti-settling agent 1-1.5%, leveling agent 0.5-1%, defoamer 0.1-0.5%, with the balance being acrylic resin. The moisture-proof and stain-resistant acrylic resin coating of this invention exhibits excellent comprehensive performance, high filling and sealing properties, strong adhesion to alloys, and good stain resistance, water resistance, and gloss retention.

The invention discloses a graphene modified gradient distribution high-temperature-resistant anticorrosive coating and a preparation method thereof. The anticorrosive paint comprises a graphene thermoplastic resin additive, an organic silicon hybrid epoxy resin base material and a curing agent, the graphene thermoplastic resin additive is prepared from the following components in parts by mass: 45 to 59 parts of xylene, 40 to 50 parts of aromatic resin, 0.05 to 1 part of modified graphene oxide and 0.5 to 2.5 parts of fumed silica. The organic silicon hybrid epoxy resin base material comprises the following components in parts by mass: 50-80 parts of organic silicon hybrid epoxy resin, 1-5 parts of n-butyl alcohol, 1-5 parts of butyl acetate, 5-20 parts of hollow glass beads, 3-15 parts of titanium dioxide, 3-15 parts of mica iron oxide and 0.5-8 parts of modified bentonite. The organic-inorganic hybrid high-temperature-resistant anticorrosive coating disclosed by the invention can be used for cold spraying construction and has high adhesive force and excellent high-temperature resistance and corrosion resistance.

The invention discloses a transparent coating film capable of blocking infrared rays and ultraviolet rays and a preparation method and application thereof.The transparent coating film comprises a base film, a coating, gum and a release film, the base film is made of a high polymer material, the thickness of the base film is 50-200 microns, the light transmittance is larger than 90%, and the haze is smaller than 0.5%; the coating is attached to the front surface of the base film, the thickness of the coating is 10-15 microns, and the coating is prepared from the following raw materials in percentage by mass: 28.6-57.2% of fluorocarbon resin, 0-28.6% of acrylic resin, 5.7% of an isocyanate curing agent, 2-3% of nano cesium tungsten bronze (CsXWO3), 2% of an ultraviolet light absorber, 2% of a light stabilizer, 2% of a silane coupling agent, 0.5% of a flatting agent, 0.5% of a defoaming agent and the balance of solvent methylbenzene or xylene; the back adhesive is attached to the back surface of the base film, the light transmittance is greater than 99%, and the thickness is 10-50 microns; and the release film is attached to the back adhesive. The transparent coating film provided by the invention has excellent heat insulation property, ultraviolet aging resistance and high weather resistance, and can be widely applied to the fields of buildings, automobiles, agricultural greenhouses and the like.

The invention discloses a preparation method and application of an MFI zeolite membrane.The preparation method comprises the steps that an MFI zeolite nanosheet serves as a seed crystal, a uniformly-distributed and compact seed crystal layer is prepared on a carrier through a vacuum filtration method, namely, a nucleation center crystallized into a membrane is loaded on the surface of the carrier, and directional growth and membrane forming of the zeolite nanosheet can be effectively controlled; the highly b-oriented MFI zeolite membrane can be prepared within several hours, the prepared b-oriented MFI zeolite membrane shows a continuous and compact microstructure and almost has no defects, and compared with a traditional hydrothermal method, the method overcomes the defects that the reaction process is too long in time consumption, uneven in heating is prone to occurring, and the like. And therefore, the time required by crystal growth is greatly shortened. The prepared MFI zeolite membrane can be applied to pervaporation separation of xylene isomers, shows good size screening separation performance, and has important industrial application value.

The invention belongs to the field of chemical medicine analysis, and particularly relates to a method for determining the content of impurities in phloroglucinol trimethyl ether. According to the method provided by the invention, the excessive methylation impurities (2, 4, 6-trimethoxytoluene, 2, 4, 6-trimethoxyxylene and 2, 4, 6-trimethoxytrimethylbenzene) generated in the methylation process can be detected, and the excessive methylation impurities are prevented from being further transferred and existing in a phloroglucinol trimethyl ether raw material medicine and a final product phloroglucinol injection preparation. Researches on specificity, accuracy, precision, limit of detection, limit of quantitation, linear range, durability and the like of the method prove that the method is suitable for measuring the content of the over-methylated impurities in the phloroglucinol trimethyl ether.

The invention discloses a polypropylene grafted waste vinegar residue additive for cigarettes, a preparation method and application thereof, and the preparation method comprises the following steps: firstly, dissolving waste vinegar residues for cigarettes in tetrahydrofuran; then, polypropylene grafted maleic anhydride dissolved in xylene is added into the solution for a grafting reaction, then precipitation, washing and drying are conducted, and the plasticization and compatibility integrated auxiliary agent polypropylene grafted tobacco waste vinegar residues are obtained; secondly, bamboo powder is added into tetrahydrofuran, triethylamine and phthaloyl chloride are added into the turbid liquid for a reaction, and then hydrophobic modified bamboo powder is obtained through precipitation, washing and drying; and finally, applying an auxiliary agent to melt extrusion of the polypropylene / modified bamboo powder to obtain the master batch. According to the invention, the plasticization and compatibility integrated auxiliary agent is prepared by using the waste vinegar residues for cigarettes, the technical innovation of waste reutilization is realized, and the auxiliary agent is applied to melt extrusion of polypropylene / modified bamboo powder, so that the master batch with improved mechanical properties and thermodynamic properties is obtained.

The invention belongs to the technical field of coatings, and particularly relates to an anti-icing coating composition and a preparation method thereof. The icing-resistant coating composition is prepared from the following components: a component A, a component B and a component C, wherein the component A is prepared from the following components in percentage by weight: 50.0 to 70.0 percent of fluorocarbon resin, 0.5 to 1.0 percent of a de-foaming agent, 0.5 to 1.0 percent of a dispersing agent, 3.0 to 14.0 percent of xylene, 10.0 to 20.0 percent of titanium dioxide, 10.0 to 20.0 percent of microcapsule particles and 0.1 to 0.3 percent of a flatting agent; the component B is prepared from the following components in percentage by weight: 70.0 to 90.0 percent of an isocyanate curing agent and 10 to 30 percent of xylene; the mass ratio of the component A to the component B is 100: 15. Through the synergistic effect of the low-surface-energy fluorocarbon resin and the microcapsules, the efficient anti-icing / deicing effect is achieved, the contact angle of the coating can reach 110 degrees or above, and the coating still has good anti-icing capacity after being polished and damaged by 120-mesh abrasive paper.

The invention relates to the technical field of coatings, in particular to a low-temperature curing type fluorocarbon coating for an aluminum alloy and a preparation method of the low-temperature curing type fluorocarbon coating. The preparation method comprises the following steps: adding eugenol, potassium carbonate and decafluorobiphenyl to obtain modified biphenyl; and adding m-chloroperoxybenzoic acid to prepare the reinforcing agent. And performing surface modification on the linear silicon dioxide filler, the flaky silicon dioxide filler and the dendritic silicon dioxide filler by using gamma-epoxypropoxy propyl trimethoxy silane to obtain the epoxy modified wear-resistant filler. The preparation method comprises the following steps: adding epoxy resin and the epoxy modified wear-resistant filler into xylene, ultrasonically stirring, adding fluorocarbon resin, a reinforcing agent and a curing agent, and continuously ultrasonically stirring to obtain the fluorocarbon coating. The fluorocarbon coating prepared by the invention has good adhesion performance, wear resistance and mechanical strength, so that the fluorocarbon coating has a wide application prospect in the technical field of coatings.

The invention discloses a weather-resistant anti-aging polypropylene material and a preparation method thereof. The weather-resistant and anti-aging polypropylene material is prepared from polypropylene resin, vinyl amino compound grafted polypropylene, modified filler, an ultraviolet light absorber, a hindered amine light stabilizer, an antioxidant and an acid remover, the vinyl amino compound grafted polypropylene is prepared by carrying out free radical copolymerization reaction on polypropylene and a vinyl amino compound in a reaction solvent; the reaction solvent comprises a main solvent and a cosolvent in a mass ratio of 100: (0.5-1.2); the main solvent is selected from xylene or decahydronaphthalene, and the cosolvent is selected from N, N-dimethylformamide or methyl ethyl ketone. The invention aims to improve the compatibility of the weather-resistant auxiliary agent and polypropylene resin, solve the degradation effect of a traditional maleic anhydride grafted polyolefin compatilizer on a polypropylene matrix, and improve the weather resistance and aging resistance of a polypropylene material.

The invention belongs to the technical field of boiler protection. The invention relates to a coating, in particular to a boiler high-temperature-resistant anticorrosive coating and a preparation method thereof. The product provided by the invention comprises a primer, a transition coating and a finishing coat, the primer is prepared from 25 to 30 parts of epoxy modified silane resin, 55 to 60 parts of composite filler, 3 to 5 parts of phosphate anti-rust pigment, 2 to 4 parts of fumed silica and 8 to 12 parts of xylene; wherein the composite filler is formed by compounding flaky zinc powder and hollow spherical aluminum oxide according to the mass ratio of (4-6): 1; the transition coating is prepared from 35 to 40 parts of epoxy-organic silicon copolymer resin, 10 to 15 parts of organic bentonite, 8 to 10 parts of hollow spherical aluminum oxide, 2 to 4 parts of silane coupling agent and 10 to 12 parts of propylene glycol monomethyl ether; the finish paint is prepared from 25 to 30 parts of methyl phenyl type organic silicon resin, 20 to 25 parts of spherical nano silicon carbide, 10 to 15 parts of flaky nano aluminum powder, 8 to 15 parts of micron glass flake, 0.8 to 1.2 parts of silane coupling agent and 12 to 16 parts of xylene.

This power cable is provided with: a conductor; and an insulating layer that is provided so as to cover the outer periphery of the conductor and that is configured from a resin composition containing polyethylene. The insulating layer contains, among polyethylene, a crosslinked polyethylene that is insoluble in xylene at 120° C, and uncrosslinked polyethylene that can be eluted in xylene at 120° C. The uncrosslinked polyethylene has a number average molecular weight of 5000 to 25000.

The invention relates to an aliphatic copolyester elastomer and a preparation method thereof, and belongs to the field of high polymer materials. The elastomer is prepared through a series ring-opening copolymerization reaction of epoxide and cyclic anhydride, and the method comprises the following steps: under the action of a metal-free catalyst (a phosphazene ligand P1-tert-octyl / triethyl boron system) and an initiator (terephthalyl alcohol), carrying out a series ring-opening copolymerization reaction on epoxide and cyclic anhydride, the preparation method comprises the following steps: reacting epoxide (such as epoxypropane and allyl glycidyl ether) with aliphatic anhydride (such as glutaric anhydride) in a xylene solvent to generate a polyester prepolymer retaining an active end; adding a second group of epoxide (such as cyclohexene oxide) and anhydride (such as tetrahydrophthalic anhydride and norbornene dianhydride), continuously reacting to form a block copolymer, and then crosslinking. The material performance can be regulated by changing the monomer combination, the atom economy is high, and the raw materials can be produced on a large scale. The process is simple and environment-friendly, and a new choice is provided for application of the degradable elastomer in the fields of medical treatment, environmental protection and the like.

The invention provides an anti-ionizing radiation fiber with high filling amount, high strength and high elasticity and a preparation method and application thereof, and belongs to the field of functional fiber materials.The preparation method comprises the steps that rare earth nitrate and citric acid are dissolved in an acidic alcohol aqueous solution, heated and stirred, the pH value is adjusted, sol is obtained, the sol is subjected to secondary heating treatment to obtain gel, and the gel is dried to obtain the high-filling-amount high-strength high-elasticity anti-ionizing radiation fiber. Aging, drying, grinding and calcining the gel to obtain rare earth composite powder; wherein the rare earth nitrate is a mixture of gadolinium nitrate, dysprosium nitrate and cerium nitrate; adding polyurethane into a mixed solution of DMF and xylene, stirring, adding the rare earth composite powder, stirring, and defoaming to obtain a spinning solution; preparing nascent fibers from the spinning solution through wet spinning; and drawing, washing and drying to obtain the anti-ionizing radiation fiber. The anti-ionizing radiation fiber prepared by the invention has excellent shielding property, mechanical property and air permeability.

The invention relates to the technical field of polymer fibers, and in particular to an impact-resistant ultra-high molecular weight polyethylene fiber and a preparation method thereof. The invention introduces maleic anhydride for graft modification, and benzoyl peroxide as an initiator can promote the formation of free radicals, so that active sites are generated on the ultra-high molecular weight polyethylene chain. Maleic anhydride as a polar monomer can react with the active sites to form a graft chain, thereby introducing polar groups to enhance the interaction force between molecules, and improving the toughness and processing fluidity of the material to a certain extent. In addition, white oil, decalin and xylene as solvents are conducive to the expansion and dispersion of the ultra-high molecular weight polyethylene, so that the modification process is more uniform and efficient. The toughening polymer component in the invention is synthesized by chemical reaction to obtain a cross-linked network structure with multiple functional groups and a high molecular weight, so that the external impact force can be effectively absorbed and dispersed, and the impact resistance of the material can be significantly improved.

The invention discloses an environment-friendly odorless sealing strip adhesive as well as preparation and application thereof, and the environment-friendly odorless sealing strip adhesive is prepared from the following components in parts by mass: 15 to 20 parts of polyacrylate resin, 10 to 15 parts of dammar resin, 5 to 10 parts of fir resin, 3 to 5 parts of hydrogenated terpene resin, 2 to 5 parts of tributyl citrate and 45 to 65 parts of n-decane. The preparation method comprises the following steps: uniformly mixing natural resin (dammar resin, fir resin and hydrogenated terpene resin), polymeric monomers (n-octyl acrylate, methyl methacrylate and hydroxyethyl acrylate) and an environment-friendly solvent (n-decane), and then polymerizing to obtain the environment-friendly adhesive. The synthetic resin (polyacrylate resin) and the natural resin are sufficiently and mutually dissolved in n-decane to form stable and uniform composite resin glue, so that the problems of health risk and environmental pollution caused by harmful solvents such as xylene in the traditional sealing glue are effectively avoided, and the characteristics of no toxicity, no odor and environmental protection of the product are realized; meanwhile, the stability and the bonding performance of the section sealing glue are improved, the matching performance of the optical transmittance and the refractive index of the section sealing glue is enhanced, and the section sealing glue has quick-drying performance and is suitable for medical pathological sections.

The invention discloses a regenerated polypropylene composite material, which comprises the following components: 90-97 parts of regenerated polypropylene; 0.3 to 0.8 part of nano porous silicate; 3-8 parts of a toughening / transparent agent; 0.05 to 0.2 part of an anti-precipitation agent; and the anti-precipitation agent is selected from bis (2, 6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate ester. By adding the nano-porous silicate with specific parameters, the odor of the regenerated polypropylene can be effectively adsorbed, the dissolved substance can be reduced, and the transparency cannot be obviously reduced; meanwhile, the anti-precipitation agent can improve the formation of impurities in the processing process, and the impurities are precipitated on the surface, so that the haze is remarkably reduced, and the light transmittance is improved; furthermore, by selecting a toughening / transparent agent, not only can the toughness be improved, but also the transparency of the regenerated polypropylene composite material can be improved, and compared with other types of toughening agents, xylene soluble substances can be further reduced. The regenerated polypropylene composite material provided by the invention has the advantages of qualified dissolved substance detection, high transparency, low odor and good toughness.