223 results about "Macromolecular Substances" patented technology

The invention provides an efficient composite material manufacturing method based on front-end polymerization initiation point design, relates to manufacturing of forming materials containing macromolecular substances, and belongs to the technical field of common technological processes of processing and batching of macromolecular materials. According to the invention, the epoxy resin composite material with excellent mechanical properties is rapidly prepared with low energy consumption by preparing the epoxy resin front-end polymerization solution and initiating front-end polymerization at multiple points. The method has the advantages of being high in designability, easy to operate and the like, and rapid and energy-saving manufacturing of the epoxy resin and the composite material thereof is achieved while the mechanical property is maintained through multi-point initiation of front-end polymerization. The method has a wide application prospect in batch production of epoxy resin and composite materials and manufacturing of large-scale structures.

The invention belongs to the technical field of chromatographic packing, and particularly relates to a double-layer hole type SiO2 (at) SiO2 core-shell microsphere based on a double-phase method and a preparation method and application of the double-layer hole type SiO2 (at) SiO2 core-shell microsphere. According to the core-shell microsphere, micron-sized non-porous SiO2 serves as a core, a mesoporous SiO2 framework with pore channels perpendicular to the surface of the non-porous SiO2 core serves as a porous shell layer, the porous shell layer sequentially comprises a first ordered mesoporous shell layer and a second ordered mesoporous shell layer which are different in pore diameter from inside to outside, and the pore channels of the two shell layers are completely consistent in direction and are communicated with each other. According to the invention, a porous shell structure with dual or multiple pore size distribution is constructed on the surface of a SiO2 core, and by integrating more than two pore sizes with obvious size difference, exclusive mass transfer paths are provided for solute molecules with different sizes, exclusive mass transfer channels can be provided for small-molecular compounds and macromolecular substances at the same time, and the pore size difference is greatly reduced. Therefore, the selectivity and column efficiency of chromatographic separation are remarkably improved.

The invention relates to the technical field of wastewater purification, in particular to a phosphorus-containing wastewater treatment system. Comprising a pre-purification unit, a deep purification unit, a membrane concentration unit and a multi-effect evaporation unit which are sequentially connected, the pre-purification unit is used for diluting phosphorus-containing wastewater and filtering impurities; the deep purification unit is used for receiving the wastewater treated by the pre-purification unit and filtering multivalent metal cations, macromolecular substances and divalent salts in the wastewater; the membrane concentration unit is used for receiving the wastewater treated by the deep purification unit and evaporating water at low temperature under vacuum negative pressure and steam heating so as to concentrate phosphoric acid; and the multi-effect evaporation unit is used for receiving the phosphoric acid concentrated by the membrane concentration unit and further evaporating water under steam heating so as to further concentrate the phosphoric acid, so that a phosphoric acid product with the concentration reaching the selling standard is obtained. The method is simple in process and low in operation energy consumption, phosphorus-containing wastewater can be efficiently recycled, pollution to the environment is reduced, and economic benefits are improved through recycling of phosphorus resources.

The invention belongs to the technical field of chromatographic packing, and particularly relates to a double-layer stacking hole type SiO2-coated SiO2 core-shell microsphere as well as a preparation method and application thereof. The core-shell microsphere takes micron-sized non-porous SiO2 as a core and takes a SiO2 nanoparticle stacking layer as a porous shell layer, the porous shell layer sequentially comprises a first SiO2 mesoporous shell layer and a second SiO2 mesoporous shell layer from inside to outside, SiO2 nanoparticles in the first SiO2 mesoporous shell layer are stacked to form a first gap pore channel, and SiO2 nanoparticles in the second SiO2 mesoporous shell layer are stacked to form a second gap pore channel. According to the invention, a porous shell structure with dual or multiple pore size distribution is constructed on the surface of a SiO2 core, and by integrating more than two pore sizes with obvious size difference, exclusive mass transfer paths are provided for solute molecules with different sizes, exclusive mass transfer channels can be provided for small-molecular compounds and macromolecular substances at the same time, and the pore size difference is greatly reduced. Therefore, the selectivity and column efficiency of chromatographic separation are remarkably improved.

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 relates to a preparation method of a double-bacterium fermented opuntia ficus-indica fermentation extract and application of the double-bacterium fermented opuntia ficus-indica fermentation extract in cosmetics, and belongs to the technical field of cosmetics. The invention provides a preparation method of a double-bacterium fermented opuntia ficus-indica fermentation extract and application of the double-bacterium fermented opuntia ficus-indica fermentation extract to cosmetics, and the preparation method roughly comprises the following steps: preparing opuntia ficus-indica stem slurry and rice milk, mixing the slurry and the rice milk, performing double-bacterium fermentation, centrifuging, retaining residues, and finally enriching supernate. According to the invention, food-grade opuntia ficus stem and rice are used for fermentation, and aspergillus oryzae and saccharomycetes are used for combined fermentation, so that the introduction of exogenous enzyme is avoided, macromolecular substances are fully decomposed through synergistic metabolism, the release rate of micromolecular active ingredients is increased, and finally, the effects of moisturizing, oxidation resistance, wrinkle resistance and the like of the product are further improved through enrichment.

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 invention provides a printing and dyeing wastewater concentration method and system, and the method comprises the steps: carrying out pretreatment on desizing wastewater, so that suspended particles and colloidal impurities in the wastewater are intercepted and adsorbed by a filtering medium; carrying out buffering and flow regulation on the pretreated wastewater, and meanwhile, carrying out heat exchange on hot condensate water generated in the printing and dyeing production process and the pretreated wastewater; raising the temperature of the wastewater to 40 DEG C or above; pressurizing the heated wastewater and then carrying out membrane separation and concentration treatment, forming dialysate by micromolecular substances and part of water, and gradually accumulating intercepted macromolecular substances to form concentrated solution; when the concentration of the concentrated solution reaches the discharge standard, pollutants are treated by adopting a chemical precipitation method and a biological treatment method, or useful substances are recycled. The wastewater concentration process flow is optimized, the wastewater is filtered, intercepted and adsorbed through multiple media, a good water inlet condition is provided for concentration treatment, modified starch and PVA in the wastewater are effectively concentrated, and the follow-up treatment volume and difficulty are reduced.

The invention discloses a Lactobacillus paracasei CCFM1455 strain, a polysaccharide prepared from the Lactobacillus paracasei CCFM1455 strain for promoting gastric mucosa repair and application of the Lactobacillus paracasei CCFM1455 strain in synergism with rhizoma polygonati, and belongs to the technical field of microorganisms and medicines. According to the lactobacillus paracasei CCFM1455 exopolysaccharide disclosed by the invention, by regulating an STAT3 / SOCS3 signal channel, the levels of gastric mucosal lesion markers PGE2 and TFF3 are remarkably reduced, the expression of inflammatory factors is regulated, and gastric barrier protection and inflammation relief are realized. In addition, when the strain is used for fermenting polygonatum sibiricum, double synergistic effects can be generated: (1) macromolecular substances such as polygonatum sibiricum saponin are biologically converted, and easily absorbed micromolecular active substances such as oleanolic acid and liukucoumarin are generated; (2) polygonatum polysaccharide is converted into high-activity compound polysaccharide, so that the mucous membrane repairing synergistic effect is enhanced; therefore, the lactobacillus paracasei CCFM1455 and the fermentation derivative thereof provide an innovative solution for targeted intervention of gastric mucosal lesion and modernization of traditional Chinese medicines.

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 discloses an antibacterial peptide concentration and purification device, and particularly relates to the technical field of concentration and purification device.The antibacterial peptide concentration and purification device comprises a sewage tank and a liquid storage tank, a filtering part is fixed to the upper side of the sewage tank, a water storage tank is fixed to one side of the liquid storage tank, a first water pump is fixed to the upper side of the liquid storage tank, and a concentration part is fixed to the upper side of the water storage tank; a purification assembly is mounted on one side of the concentration part. According to the concentration and purification device for the antibacterial peptide, broken cell sap can be tangentially filtered through the arranged filtering parts, macromolecular substances such as cell debris and lipid are prevented from being deposited on the surface of a membrane, and the multiple filtering assemblies can be backwashed, so that the cell debris attached to the surface of the membrane in the filtering assemblies is reduced, and the concentration and purification efficiency of the antibacterial peptide is improved. The problem of frequent replacement caused by blockage of the filtering membrane is avoided, meanwhile, impurities in the filtered supernatant can be less, and the influence on the product quality is reduced.

The invention relates to the technical field of coatings, and discloses an anti-corrosion thermal insulation coating and a preparation method thereof.The anti-corrosion thermal insulation coating is formed by mixing epoxy resin serving as a film forming substance and modified inorganic mineral additives, hollow glass beads and the like serving as auxiliary materials. Wherein the modified inorganic mineral additive is prepared by modifying a polymer macromolecular substance on the surface of sepiolite, and the polymer macromolecular substance can participate in the subsequent curing process of the epoxy acrylic resin, so that mutual winding and crosslinking with the epoxy acrylic resin are realized, the structural compactness of the coating is improved, and meanwhile, the coating has a good application prospect. The sepiolite is promoted to be uniformly dispersed in the coating, the permeation path of a corrosive medium is prolonged by utilizing the self-layer chain structure of the sepiolite, so that the anti-corrosion effect of the coating is enhanced, and the sepiolite and the modified inorganic mineral additive can also synergistically enhance the impact resistance of the coating.

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 invention relates to the technical field of materials, and discloses a water-resistant 3D printing resin material and a production process thereof, the resin material is prepared by mixing acrylic resin oligomer, acrylate living polymeric monomer, modified aluminum phosphate material and photoinitiator as raw materials, wherein the modified aluminum phosphate material is prepared by modifying the surface of aluminum phosphate with a block alternating macromolecular substance, and the macromolecular substance structure contains an unsaturated alkenyl functional group, so that the macromolecular substance can participate in the subsequent illumination curing process of an acrylic resin oligomer and an acrylate active polymerization monomer; furthermore, the compatibility between an inorganic material aluminum phosphate and a macromolecular resin material is improved, so that the aluminum phosphate can generate a good reinforcing effect and a good barrier effect, and the water resistance of the resin material is enhanced. Besides, the macromolecular substance structure also contains a rigid benzene ring structure with strong hydrophobicity, tert-butyl, a silicon-oxygen bond and the like, so that the resin material can be endowed with a super-hydrophobic effect, and the water resistance of the resin material is further greatly enhanced.

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 materials, and discloses a flame-retardant nylon composite material and a preparation method thereof.The composite material is prepared by taking nylon 6 resin as a base material and a modified hydrotalcite additive and the like as auxiliary materials through mixing, extrusion and granulation, the existence of the multi-element flame-retardant macromolecular substance can improve the interfacial compatibility between the hydrotalcite and the nylon 6 resin matrix, promote the hydrotalcite to efficiently exert the enhancement advantage of the hydrotalcite and improve the mechanical strength of the composite material, and the multi-element flame-retardant macromolecular substance can form an expanded carbon layer to cover the surface of the material when the composite material burns, so that the flame-retardant property of the composite material is improved. According to the present invention, the hydrotalcite is added to prevent further combustion, the silicon element can be deposited on the surface of the carbon layer so as to enhance the structural strength of the carbon layer and avoid the collapse of the carbon layer, and the hydrotalcite has a certain flame retardation effect and can produce the inorganic-organic synergistic flame retardation effect so as to provide the excellent flame retardation property of the prepared composite material.

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 invention relates to the technical field of gloves, and discloses an anti-cutting glove which is formed by mixing and vulcanizing natural latex serving as a main raw material and modified boron nitride nanosheets and the like serving as auxiliary materials, the surfaces of the modified boron nitride nanosheets are modified with macromolecular substances, and the modified boron nitride nanosheets are not prone to cracking in the subsequent vulcanizing process. Boron nitride nanosheets are arranged in the natural latex base material and interact with natural latex molecular chains, so that good interface performance can be generated between the boron nitride nanosheets and the natural latex, the boron nitride nanosheets are promoted to be uniformly dispersed in the natural latex base material, on one hand, the special sheet structures of the boron nitride nanosheets can form a continuous physical barrier layer in the glove, and the physical barrier layer is formed in the glove; the puncture resistance of the glove is improved by utilizing the physical barrier effect, and meanwhile, the physical barrier effect can also effectively prevent the glove from being cut and scratched. Besides, the macromolecular substance structure contains a benzene ring structure of biphenyl, so that the mechanical strength of the glove can be improved, and the glove shows excellent comprehensive performance.

The utility model discloses enzymatic hydrolysate centrifugal separation and purification equipment for active peptide powder processing, and relates to the technical field of active peptide powder processing, the enzymatic hydrolysate centrifugal separation and purification equipment comprises a centrifugal machine, a tank body, a finished product tank, a liquid outlet pipe, a connecting pipe and a filter box, the lower part of the centrifugal machine is communicated with the finished product tank, the tank body is arranged at one side of the finished product tank, and the liquid outlet pipe is arranged at the other side of the finished product tank; the centrifugal machine is communicated with the finished product tank through a pipe body, and the centrifugal machine is communicated with the finished product tank through the liquid outlet pipe. According to the utility model, enzymatic hydrolysate is primarily purified through the centrifugal machine, solid particles (such as cell debris and unreacted substrates) in the enzymatic hydrolysate are separated from liquid, and the separated finished product liquid directly enters the filter box; the finished product liquid sequentially passes through the arc-shaped filter screen, the filter plate I and the filter plate II to perform membrane filtration on small molecular impurities and part of macromolecular substances, and the centrifuged finished product liquid is refined, so that centrifugation and membrane filtration are performed simultaneously, and the production efficiency is improved.

The invention relates to the technical field of materials, and discloses a bio-based high-flowability mineral reinforced PC / PET alloy material and a preparation method thereof.The alloy material is prepared from bio-based polycarbonate resin, PET, a modified mineral reinforced material and the like, the modified mineral reinforced material is prepared by modifying the surface of hydrotalcite with a macromolecular substance connected through an ester bond, and the modified mineral reinforced material is prepared through a high-temperature heat treatment technology. As benzene rings in a macromolecular substance structure can generate conjugation with benzene rings in PC and PET structures, the affinity between the talcum powder and PC and PET can be greatly improved, molecular chains among the macromolecular substance, PC and PET can generate interaction in a melt extrusion process, a cross-linked network with the talcum powder as a core is further formed, and the cross-linked network is formed. In addition, silicon-oxygen bonds with high bond energy in the macromolecular substance structure can also be beneficial to enhancing the thermal stability of the alloy material.