153 results about "Macromolecular Substances" patented technology

The invention relates to the technical field of microbiology and food processing, in particular to pediococcus acidilactici and application of the pediococcus acidilactici in preparation of a brain-intestinal axis regulating efficacy metagen product.The high-activity pediococcus acidilactici DY-1 is separated out from natural fermentation pickles of super-polyselenium plant cardamine violifolia for the first time; the strain can be widely applied to fermentation of high-selenium plant-based food, can significantly promote glycolysis release of selenium-containing active substances, has good acid resistance, high protease activity and high lipase activity, can fully ferment plant-based fermentation raw materials, and has high yield. Glycolysis of macromolecular substances such as protein, saccharides and fat is facilitated, accumulation of active ingredients such as essential amino acid, unsaturated fatty acid, alkaloid and phenolic substances is promoted, and the edibility and functionality of the product are improved; and the organic selenium-rich metagen product prepared by sterilizing the fermentation mixture can synergistically improve human body cognition and emotion regulation regulated by microorganism-intestinal-brain axis.

The application provides a fruit peel biochar and a preparation method and application thereof in reinforcing residual sludge methanogenesis, and belongs to the technical field of solid waste resource treatment. The preparation method of the fruit peel biochar comprises the following steps: drying, carbonizing, and grinding banana peels after being cut into pieces to obtain the fruit peel biochar; the heating speed in the carbonizing process is 10-15 DEG C / min, the pyrolysis temperature in the carbonizing process is 500-600 DEG C, and the holding time under the pyrolysis temperature is 1-2 h. The fruit peel biochar has the advantages of strong alkalinity, and the residual sludge is pretreated first, the hydrolysis rate of the residual sludge is improved, the barrier of macromolecular substance dissolution is broken, more organic substrates are provided for the subsequent anaerobic digestion process, meanwhile, the biochar added in the pretreatment stage can still reinforce the effect of the anaerobic digestion in the subsequent stage, and a more competitive new idea for the application of the biochar in the anaerobic digestion is provided.

The invention relates to the technical field of adhesive tapes, and discloses a high-viscosity power-on viscosity-reducing adhesive tape and a preparation method thereof.The adhesive tape comprises an adhesive layer and release films attached to the two sides of the adhesive layer, the adhesive layer is prepared by adopting acrylate monomers, a carbon nano tube modification functional agent and the like as raw materials through free radical polymerization, and the release films are attached to the two sides of the adhesive layer; wherein the carbon nanotube modified functional agent is prepared by modifying a macromolecular substance with a block connection structure on the surface of a carbon nanotube, and the macromolecular substance contains an alkenyl functional group and can participate in the subsequent polymerization process of an acrylate monomer, so that the carbon nanotube is uniformly dispersed to form a continuous conductive network; compared with the prior art, the high-temperature-resistant adhesive has the advantages that the high-temperature-resistant performance of the adhesive can be improved, electrifying viscosity reduction of the adhesive is facilitated, the macromolecular substance can serve as a cross-linking agent, cohesive energy of the adhesive is improved, the adhesive performance of the adhesive can be further improved, and in addition, rigid rings and a large number of ether bonds in the structure of the macromolecular substance can effectively enhance the high-temperature-resistant performance and the adhesive performance of the adhesive.

The invention relates to the technical field of sound insulation cotton, and discloses high-strength sound insulation cotton and a preparation method thereof.The sound insulation cotton is prepared by taking polylactic acid as a base material and a diatomite modifier and the like as additives through mixing, extrusion, spinning and needling processes, the macromolecular substance can act with an active group at the tail end of a polylactic acid molecular chain in the subsequent melt extrusion process, so that organic connection between the diatomite and the polylactic acid molecular chain can be realized while the chain extension effect on polylactic acid is realized, and therefore, the interfacial compatibility between the diatomite and the polylactic acid molecular chain is greatly improved; further, the mechanical property of the polylactic acid sound insulation cotton is effectively improved, the sound insulation effect of the polylactic acid sound insulation cotton can be improved through the rich pore structure of the kieselguhr, in addition, the macromolecular substance structure contains rich nitrogen and phosphorus flame-retardant elements, and the flame-retardant property of the sound insulation cotton can be effectively improved.

The invention discloses a polylactic acid composite material for a packaging bottle and a preparation method of the polylactic acid composite material. The polylactic acid composite material for the packaging bottle is prepared from the following components in parts by mass: 50 to 70 parts of polylactic acid, 10 to 30 parts of poly (epsilon-caprolactone), 10 to 30 parts of poly (propylene carbonate), 30 to 50 parts of functional master batch and 0.1 to 0.5 part of antioxidant, the functional master batch is prepared from a polylactic acid-modified nano silicon dioxide-poly (propylene carbonate) graft and a polylactic acid-modified nano silicon dioxide-poly (epsilon-caprolactone) graft; the modified nano silicon dioxide is 4-phenylethynyl phthalic anhydride modified nano silicon dioxide. The modified nano silicon dioxide is obtained by adopting an ultrasonic blending method, and different macromolecular substances are bonded through the modified nano silicon dioxide by utilizing an electron irradiation method to obtain a modified graft, so that the surface energy of particles can be reduced, the agglomeration among the particles can be reduced, and the dispersing performance of the nano silicon dioxide can be improved.

The application relates to the technical field of materials, and discloses a kind of corrosion-resistant coated steel pipes and preparation method thereof, the coated steel pipe includes steel pipe body and is coated in functional coating, functional coating is formed by coating functional coating on the surface of steel pipe body, and is cured, functional coating is formed by mixing with epoxy resin as film-forming material and glass flake modified material as additive, glass flake modified material is modified by macromolecular material with benzene sulfone-fluorosilane alternate connection structure on the surface of glass flake, due to the benzene sulfone structure in the structure of macromolecular material can produce pi-pi conjugation between epoxy resin matrix, the compatibility of glass flake and epoxy resin is improved, the strength and corrosion resistance of coating are enhanced, macromolecular material can form highly hydrophobic layer on the surface of coating, construct the synergistic effect of "interface strengthening-network crosslinking-corrosion prevention", greatly enhance the corrosion resistance of coating.

The application discloses a kind of fermentation complex microbial inoculant and preparation method and application thereof, the fermentation complex microbial inoculant includes the following weight parts of component: bacillus subtilis microbial inoculant 2-5 parts, bacillus mucilaginosus microbial inoculant 5-10 parts, yeast microbial inoculant 2-10 parts, trichoderma harzianum microbial inoculant 10-20 parts, aspergillus niger microbial inoculant 10-20 parts and streptococcus thermophilus microbial inoculant 2-5 parts;The fermentation complex microbial inoculant of the application is prepared by selecting each strain and amount, is added to pigeon manure and is fermented to prepare organic fertilizer, can better decompose macromolecular substance, significantly improve the organic matter and total nitrogen content in preparation organic fertilizer, and can better improve seed germination rate;In addition, the preparation method of pigeon manure organic fertilizer of the application is simple in process, easy to operate, and convenient for production.

The application discloses a method for preparing an oat-based beverage through biological enzymolysis and a product thereof, and comprises the following steps: continuously hydrolyzing starch, cellulose, protein and other substances in oat slurry by using high-temperature-resistant amylase, cellulase, saccharifying enzyme, papain and alkaline protease, sufficiently releasing reducing substances in the oat, simultaneously generating reducing peptides, improving the free radical scavenging capacity of the oat slurry, and improving the emulsification stability of the oat slurry due to the moderate degradation of macromolecular substances such as starch, cellulose and protein; glycerol is added in three stages at a controlled speed, so that the glycerol is fully mixed with flaxseed oil, and excessive glycerol is avoided from adhering to lipase to reduce the activity of the enzyme, thereby improving the reaction efficiency.

The application discloses a preparation method of a hawthorn extract for cigarettes and application of the hawthorn extract in cigarettes, and the preparation method comprises the following steps: mixing and sterilizing rutin with water; inoculating Pseudomonas acidovorans ZY-03, Bacillus subtilis SMXP-58, Micrococcus ZY02 and Pichia membranacei into culture media respectively to form seed liquids; inoculating the seed liquids of the Pseudomonas acidovorans ZY-03 and the Bacillus subtilis SMXP-58 into the rutin solution to obtain a fermentation product 1; grinding and crushing hawthorn and mixing the hawthorn with water and heating, then filtering and mixing the hawthorn with the fermentation product 1 to obtain a mixed solution; mixing the four seed liquids and inoculating the mixed solution into the mixed solution; after fermentation, the mixed solution is extracted by refluxing with an organic solvent, centrifuged, rotary evaporated, and added with an organic reagent to obtain the hawthorn extract for cigarettes. The rutin and the hawthorn are mixed and fermented by using microorganisms, the fermentation effect is improved, flavonoids such as rutin and macromolecular substances in the hawthorn are degraded and converted into aroma components, and the quality of the hawthorn extract for cigarettes is improved.

The application relates to the field of paint technology and discloses a water-based UV primer for floor and a preparation method thereof. The water-based UV primer is formed by mixing water-based UV polyurethane emulsion as a film-forming material, modified jute fiber, defoaming agent, thickening agent and the like as auxiliary materials. The modified jute fiber is prepared by modifying macromolecular substances with polyether and triallyl ether alternately connected on the surface of jute fiber. The macromolecular substance structure contains a large number of triallyl ether structures. The allyl groups can participate in the subsequent photocuring process of the paint, so that the covalent connection of the jute fiber and the paint molecular chain is realized. Therefore, the jute fiber can exist in the form of a chemical core in the coating layer formed by photocuring of the paint, and the jute fiber can strengthen and toughen the coating layer. Meanwhile, the macromolecular substance structure contains a large number of ether bonds, and the ether bonds can improve the adhesion of the paint film, thereby improving the problem of poor interlayer adhesion.

The application provides a high-activity pectin methylesterase mutant designed based on a diffusion model, and preparation and application of the pectin methylesterase mutant, and the amino acid sequence of the pectin methylesterase mutant PME-DS12 is shown as SEQ ID NO:2. The application re-designs the structure of the pectin methylesterase by using RFdiffusion generated diffusion model, and a mutant PME-DS12 with significantly improved enzyme activity is screened. Compared with the wild-type pectin methylesterase, the enzyme activity of PME-DS12 is improved by about 6.3 times, and PME-DS12 has higher industrial application value. The mutant has wide application prospects in the fields of food processing, textile and the like. Especially in the aspect of flavor substance generation, the enzyme can provide the generation of aroma lipid substances by degrading macromolecular substances in food, so as to improve the aroma quality of products; and the enzyme can also be used in the papermaking industry, including biological bleaching of paper pulp, reduction of use of chemical reagents and reduction of environmental pollution.

The invention provides a sealing coating, a preparation method thereof, a coating and application thereof, and belongs to the technical field of sealing materials. Pits formed by interweaving the surface fibers can be filled with the filler, so that the adhesive lines are firmly adhered; the filler has heat resistance and has an anti-sticking effect; the coupling agent modified filler solution is adopted, so that the adhesion firmness of the glue line on the surface of the material can be improved; the coupling agent modified sodium carboxymethyl cellulose solution is adopted, so that the hydrophilic performance of macromolecular substances can be reduced, and an adhesive is partially crosslinked under the action of the coupling agent, so that cylinder sticking is avoided; the surface of an uncoated base material adsorbs water, a water molecule film is formed on the surface, after the sealing coating is adopted, a coupling agent is in contact with the water on the surface of the base material and is hydrolyzed to generate a hydroxyl group, the hydroxyl group and a polar hydroxyl group on the surface of the base material are subjected to a condensation reaction to form a hydrogen bond or a-SiO-Me covalent bond, and the water molecule film is formed. An R group in the coupling agent can react with free hydroxyl of rubber to form a net structure, so that rubber lines are prevented from cracking and falling off.

This product relates to the field of eyewash production technology, providing a filter for eyewash production, including a raw material tank for storing the eyewash concentrate, a coarse filter for filtering large particulate impurities, and a cross-flow filter including a filter tube and a filter membrane. One end of the filter tube is connected to the coarse filter, and the other end passes through the cross-flow filter and connects to the raw material tank. An opening is provided at the bottom of the filter tube located inside the cross-flow filter. The filter membrane is positioned on the opening and parallel to the flow direction of the eyewash through the filter tube, used to filter large molecular impurities in the eyewash. This filter removes large molecules through the opening parallel to the flow direction of the eyewash and the filter membrane, and washes away any remaining large molecules on the filter membrane surface through the flow of the eyewash, preventing large molecules from clogging the filter membrane and improving the utilization rate of the filter membrane.

The invention relates to the technical field of materials, and discloses a polypropylene material with high strength and strong anti-pressure ability and a preparation method, the polypropylene material is prepared by taking polypropylene as a base material and a linen fiber modified additive and the like as auxiliary materials through mixing and extrusion processes, the linen fiber modified additive is prepared by modifying macromolecular substances with norbornane-erythritol alternate connection structures on the surfaces of linen fibers, and the macromolecular substances can react with anhydride groups of maleic anhydride grafted polypropylene in the subsequent melt extrusion process, so that interlocking can be formed between the linen fibers and a polypropylene matrix; according to the present invention, the macromolecular substance structure contains the high bond energy silicon-oxygen bond and the rigid ring structure, such that the stability of the polypropylene can be improved so as to further enhance the impact resistance and other mechanical properties of the polypropylene.

The invention relates to the technical field of polyester fibers, and discloses an antistatic polyester fiber for clothing and a preparation method thereof.The polyester fiber contains an antistatic agent, a wear-resistant functional material and other additives, and the antistatic agent is prepared by modifying quaternary ammonium cations on the surface of graphene oxide; the existence of quaternary ammonium cations can enable the surfaces of graphene oxide particles to carry strong positive charges, so that the graphene oxide particles are separated from one another and are uniformly dispersed in the fiber, and the antistatic performance of the fiber is improved by utilizing the conductive effect of graphene, and the wear-resistant functional material is prepared by modifying a polyester type macromolecular substance on the surface of nano tungsten disulfide; pi-Pi conjugation can be formed between the polyester type macromolecular substance and a PET matrix, and a molecular chain of the polyester type macromolecular substance is intertwined and interwoven with a PET molecular chain, so that the nano tungsten disulfide fully plays a role, the strength of the polyester fiber can be enhanced, and the wear resistance of the polyester fiber can be improved by utilizing the self effect of the nano tungsten disulfide.

The application discloses a preparation method of MXene microcapsules, and MXene hollow flower-shaped microcapsules are synthesized by using a surfactant-assisted hydrothermal method. The method promotes the polymerization of nanosheets in a hydrothermal process by using a cationic surfactant and a long-chain neutral polymer, improves the stability of MXene, and promotes the generation and formation of rich internal cavities in the microcapsules. The microcapsules can greatly improve the specific surface area of MXene and fully utilize the advantages of MXene. The prepared microcapsules can prevent macromolecular substances from entering and slowly release small-size molecules. The application has simple process and easy-to-control flow, and provides a new way for comprehensive utilization of MXene.

The invention discloses a bean-based multi-bacteria organic liquid fertilizer and a preparation method thereof. The preparation method sequentially comprises the steps of feeding and dissolving, initial pH adjustment, heating and hot soaking, cooling and enzymolysis, and adjustment and inoculation before fermentation. The method specifically comprises the following steps: performing efficient pretreatment by adopting alkaline hot soaking in cooperation with two-stage high-shear crushing, then fully degrading macromolecular substances in bean flour through a two-stage temperature control enzymolysis process, and finally performing anaerobic fermentation through a compound microbial agent to generate a final product. Therefore, the problems of insufficient raw material degradation, long fermentation period and low product activity in the prior art are effectively solved, the finally obtained liquid fertilizer is rich in small molecule peptides, free amino acids and high-activity probiotics, the product stability and absorption efficiency are remarkably improved, and the liquid fertilizer is suitable for modern fertilization modes such as drip irrigation and foliage spraying.

The application belongs to the technical field of non-antibiotic compounds as bacteriostatic agents, and discloses an application of a known non-antibiotic compound, cladrabine, in inhibiting the growth of multi-drug resistant Klebsiella pneumoniae. The application finds that cladrabine can inhibit the growth of multi-drug resistant Klebsiella pneumoniae, and the minimum bacteriostatic concentration reaches 64 mg / L. Further exploration of the bacteriostatic mechanism finds that after exposure to cladrabine, the permeability of the bacterial cell membrane is enhanced, and the macromolecular substances (nucleic acids and proteins) in the cell are excreted, causing the integrity of the bacterial cell membrane to be destroyed, and further causing the death of Klebsiella pneumoniae. The application proposes that cladrabine can destroy the cell membrane of bacteria, change the permeability of the cell membrane, has a good inhibitory effect on multi-drug resistant Klebsiella pneumoniae, and can be further applied to the preparation of related drugs.

The utility model discloses inulin extracting solution separating and concentrating equipment which comprises an extracting solution temporary storage tank, a first-stage filtering system, a second-stage filtering system, a third-stage filtering system and a disc-type membrane concentrating system, the disc-type membrane concentrating system comprises a shell, a hollow shaft, a disc-type membrane and a driving motor, and a liquid conveying channel is arranged in the disc-type membrane. The liquid conveying channel is communicated with the hollow shaft; the liquid conveying channel is arranged in the disc membrane and communicated with the hollow shaft, the liquid discharging hole is formed in the hollow shaft located on the outer side of the shell, under the action of pressure, macromolecular substances are intercepted outside the disc membrane to form intercepted liquid, micromolecular fluid penetrates through the disc membrane to form filtrate, and the filtrate is discharged through the central shaft. In the process, the hollow shaft drives the diaphragms to rotate, high section flow speed is achieved through rotating centrifugal force, a more efficient fluid treatment mode is brought by the dynamic cross flow technology, the separation speed is increased, time is saved, and the productivity is improved.

The invention relates to the technical field of separation and concentration of biological macromolecules, in particular to a concentration column for biological macromolecular substances, which comprises a chamber filled with a water absorption material layer and a separation membrane arranged at the bottom of the chamber, the water absorbing material can absorb solvent components to generate osmotic pressure difference to drive solvents in a solution and other substances with the particle size smaller than that of the biological macromolecular substances to pass through the separation membrane, and the biological macromolecular substances are intercepted by the separation membrane. The concentration column can realize separation and / or concentration of biological macromolecular substances without depending on external pressure or centrifugal force.

The invention provides a fermentation method for improving uniformity and dark color degree of cigar tobacco leaves and a product and application thereof. The fermentation method comprises the steps of inoculation with a complex microbial inoculant, tobacco leaf fermentation and fermentation ending, wherein the strains in the complex microbial inoculant comprise a combination of aspergillus niger, aspergillus oryzae and rhizopus strains. According to the method, mixed flora of aspergillus niger, aspergillus oryzae and rhizopus strains is adopted for inoculating the cigar tobacco leaves to promote fermentation, so that enzyme system complementation is achieved, generation of multi-target enzymes is covered, sufficient degradation of macromolecular substances is promoted, the fermentation effect is improved, and the fermented cigar tobacco leaf product with high uniformity and deep color degree is prepared.

The present application relates to the technical field of separation engineering, and provides a kind of fucosyl lactose and its purification method, the purification method includes: after removing production bacteria and macromolecular substance, decoloring, desalination treatment to fucosyl lactose fermentation broth, obtain the concentrated solution with fucosyl lactose content of 35~55%, carry out continuous chromatography separation, the filler in the chromatographic column used in the continuous chromatography separation is calcium type gel resin, the temperature of chromatographic column is 50~65 DEG C, and pure water is used as eluent.The present application can obtain high yield, high purity, low impurity, no solvent residue fucosyl lactose by removing production bacteria and macromolecular substance, decoloring, desalination treatment and continuous chromatography separation under specific conditions.

The invention relates to the technical field of materials, and discloses an anti-aging cable protection tube and a preparation method thereof.The cable protection tube is prepared by taking polypropylene as a base material and taking an elastomer, a compatilizer, a synergistic antioxidant and the like as auxiliary materials through the processes of mixing, extruding and forming; wherein the synergistic antioxidant is a macromolecular substance with benzimidazole-hindered phenol blocks alternately linked, and can interact with a maleic anhydride group in a molecular chain of the compatilizer in the subsequent high-temperature melt extrusion process, so that the synergistic antioxidant can play a role of a cross-linking agent, the molecular chain of polypropylene is converted into a three-dimensional network structure, and the mechanical property of the polypropylene is improved. The synergistic antioxidant is added into the cable protection pipe, so that the structure of the prepared cable protection pipe is more compact, the mechanical strength of the cable protection pipe is improved, a molecular chain of the synergistic antioxidant contains a large number of hindered phenol structures and benzimidazole structures, the hindered phenol structures and the benzimidazole structures can cooperate with each other, and the effect that the aging resistance of the cable protection pipe can be greatly improved by adding a small amount of the synergistic antioxidant is achieved.

The invention belongs to the technical field of biological pharmacy, and relates to a method for preparing tremella aurantialba polyphenol by utilizing tremella aurantialba TA58.21 fungus chassis cell fermentation, which comprises the following steps: adding a cooked soybean meal culture medium and a tremella aurantialba seed solution into a fermentation tank, introducing sterile oxygen, controlling the stirring rotating speed of the fermentation tank and the culture temperature to be 25-30 DEG C, continuously culturing for 5-8 days, and when the fermentation liquor becomes red, stopping the fermentation; when a large amount of foam is generated, closing an exhaust valve, keeping the tank pressure at 0.1 MPa, increasing the fermentation temperature to 50 DEG C, continuing to culture for 24 hours, increasing the stirring rotating speed of the fermentation tank, heating the fermentation liquor to 80-90 DEG C, keeping the temperature for 4-8 hours, stopping stirring, continuing to heat to 120 DEG C, and keeping the temperature for 30 minutes; centrifuging the fermentation liquor to remove precipitates and mycelia; collecting supernate, and pre-treating macromolecular substances and thallus fragments; collecting permeate liquid, and intercepting through a nanofiltration membrane to obtain a concentrated solution; and carrying out spray drying or freeze drying treatment on the concentrated solution to obtain a high-purity product. According to the invention, the tremella aurantialba polyphenol product with good water solubility, heat resistance, acid resistance and molecular weight of less than 10000 Da can be obtained.

The invention discloses a fermentation type seaweed granular fertilizer and a fermentation method thereof, and belongs to the technical field of biological fertilizers, plant active substances of enzymolysis seaweed active powder, grain byproducts and organic nutrition of soybean meal are fused, after microbial fermentation, nutrition release is more balanced, robust growth of crops can be promoted, and the yield and quality can be improved; seaweed residues are secondarily utilized through an enzymolysis technology, macromolecular substances are degraded into micromolecular active components through alginate lyase and cellulase, enzymolysis seaweed active powder is prepared, the nutritive value of seaweed is excavated to the maximum extent, the cost of raw materials is reduced, nano zeolite serves as a carrier of microelements, iron ions are reduced and stabilized through potassium borohydride, and then iron ions are reduced and stabilized through potassium borohydride; and then the nitrohumic acid is used for chelating elements such as zinc, iron and boron, and the adsorption performance of the nano zeolite is combined, so that the double stability of the chelated trace elements and the porous carrier is realized.

The invention discloses a beverage with coconut flavor and a preparation process thereof, and belongs to the technical field of coconut water, the beverage adopts a whole-plant-based formula, and comprises coconut water subjected to enzymolysis pretreatment, plant protein liquid, coconut milk, a natural sweetening agent, a compound stabilizer and a natural emulsifier; the preparation process comprises the steps of coconut water enzymolysis pretreatment, mixing and homogenizing, ultrahigh-temperature instantaneous sterilization, post-sterilization, secondary homogenizing and the like. According to the method, macromolecular substances such as pectin which easily causes precipitation in coconut water are effectively degraded through enzymolysis pretreatment, and the stability problem of a vegetable protein and coconut component compounded system is solved in combination with a specific stable system and process conditions. The obtained product has the characteristics of pure flavor, refreshing taste and high stability, does not need long-time refrigeration and standing in the production process, and is suitable for industrial production.

The invention discloses an auxiliary curing method for cured tobacco leaves, and relates to the technical field of tobacco leaf curing processing, and the method comprises the following steps: during curing of the cured tobacco leaves, when the water content of the tobacco leaves is higher than 40%, introducing at least one oxidizing gas including ozone, oxygen or hydrogen peroxide; the oxidizing gas is introduced into the air-drying room at 10 a.m. and 16 p.m. every day through ventilation pipelines arranged between two layers of tobacco leaves on the two sides of the length direction of the air-drying room, and the ventilation time is 25-30 min every time. According to the method, the appearance quality of the air-cured tobacco leaves is guaranteed, oxidative degradation of macromolecular substances such as protein, chlorophyll and carotenoid of the air-cured tobacco leaves and formation of aroma small molecular substances are promoted, and the mildew rate of the tobacco leaves in the air-curing process is effectively reduced; the green smell and bitter taste caused by insufficient curing maturity of the air-cured tobacco leaves are eliminated to a great extent, and the sensory evaluation quality of the air-cured tobacco leaves is improved.

The application relates to the technical field of paint, and discloses a high-voltage-resistant light-cured insulating paint and a preparation method thereof. The paint is formed by mixing two-functionality polyurethane acrylate, isobornyl acrylate, isobornyl methacrylate and the like as UV monomers and adding modified mica functional material and the like as an additive. The modified mica functional material is prepared by modifying macromolecular substances with anthracene-perfluoro block alternating connection structure and containing unsaturated alkenyl functional groups on the surface of mica powder. The unsaturated alkenyl functional groups in the macromolecular substances can participate in the polymerization process of the UV monomers, the mica powder is uniformly distributed in the coating, a continuous and stable physical barrier layer is formed, and the voltage resistance of the coating is improved. Meanwhile, the rigid anthracene ring and a large amount of fluorine elements contained in the structure of the macromolecular substances can effectively enhance the heat resistance and high-voltage breakdown resistance of the coating.

The invention relates to the technical field of waste gas purification, in particular to a preparation process of a chemical waste gas adsorbent. According to the invention, macromolecular substances capable of adsorbing industrial waste gas are chemically grafted on the surface of an inorganic porous material, and other functional treatment steps are combined, so that the chemical waste gas adsorbent with high adsorption capacity, high selectivity, good stability and renewability is prepared, and efficient adsorption and removal of various pollutants in the chemical waste gas are realized; the technical defects of an existing adsorbent are effectively overcome, the chemical waste gas treatment efficiency and quality are improved, and environmental pollution is reduced.

This invention discloses a universal method and composition for solving the pilling problem in cold-formulated cosmetics. Adding an effective amount of glyceryl oleate, citrate / caprylic / capric triglyceride to a cosmetic composition containing a pilling-prone cold-formulated emulsifier can significantly reduce or eliminate pilling. This substance has been discovered for the first time to have a novel anti-pilling application, effective against pilling caused by the emulsifier's own characteristics, high dosage, electrolyte interference, or the addition of large molecules, and is universally applicable to different types of cold-formulated emulsifier systems. This invention is particularly suitable for systems using electrolyte-rich natural plant extracts as the aqueous phase, fundamentally solving the pilling problem and providing a reliable solution for preparing high-feel, all-natural cold-formulated cosmetics.