1473 results about "Methyl cellulose" patented technology

The invention discloses sound-insulation and heat-insulation building mortar and a preparation method thereof, and relates to the technical field of building materials, the sound-insulation and heat-insulation building mortar comprises, by weight, 42-48 parts of a cementing material, 15-25 parts of an auxiliary material, 17-22 parts of lightweight aggregate, 30-35 parts of a functional filler, and 1-2 parts of an additive; the cementing material is a mixture of sulphoaluminate cement and Portland cement; the auxiliary material is a mixture of fly ash and quartz sand, the lightweight aggregate is a mixture of 20-40-mesh hollow vitrified microbeads and 70-90-mesh hollow vitrified microbeads, and the mass ratio of the hollow vitrified microbeads to the hollow vitrified microbeads is 1: (2-3); the functional filler is a mixture of modified waste rubber particles and modified fibers; the additive is a mixture of a polycarboxylate superplasticizer and hydroxypropyl methyl cellulose ether. The mortar disclosed by the invention is good in thermal insulation performance and excellent in mechanical property, the method disclosed by the invention is simple to operate and low in cost, and the prepared mortar is excellent in performance.

The invention discloses shrinkage-free aluminoferrite cement-based ultra-high performance concrete and a preparation method thereof, and belongs to the technical field of novel wall materials, and the shrinkage-free aluminoferrite cement-based ultra-high performance concrete comprises the following components: an activated cementing material, mineralized aggregate, an additive, reinforced fibers and mixing water. Due to the slow release effect of the methyl cellulose coating on the composite expanding agent, precise compensation of self-constriction is achieved, and contraction deformation in the curing and using process is effectively inhibited. Due to the unique mineral composition of the aluminoferrite cement, the early strength of the concrete is sharply improved, and the production cycle of prefabricated parts is greatly shortened. The steel fibers subjected to sand blasting and pre-wrapping modification can effectively bridge microcracks in the concrete and limit crack propagation; the polycarboxylate superplasticizer disperses the modified carbon nanofibers, crack initiation is inhibited from the microscopic level, and mechanical properties such as fracture resistance and impact resistance of the joint part and the prefabricated part are remarkably improved through cooperation of the polycarboxylate superplasticizer and the modified carbon nanofibers.

The invention discloses an oral care desensitization paste and a preparation method thereof, and mainly relates to the technical field of dental medicines. The oral care desensitization cream is prepared from the following components: bioactive glass, strontium chloride, sodium chloride, silicon dioxide, sodium carboxymethyl cellulose, polyethylene glycol 400, a xanthan gum solution, sodium lauryl sulfate, sodium lauroyl sarcosinate, titanium dioxide, beta-glucan, saccharin sodium salt, sorbitol, methylparaben, propyl hydroxybenzoate, edible essence and water. Compared with the prior art, the oral care desensitization paste disclosed by the invention can be used for sealing dentinal tubules and treating hemodia; the traditional Chinese medicine composition can also be used for treating plaque gingivitis, relieving and reducing gingival bleeding and inhibiting and reducing dental plaque; and meanwhile, the condition of mistakenly swallowing and eating in the using process is reduced.

The invention relates to a starch-based soft capsule shell and a preparation method thereof. The starch-based soft capsule shell is prepared from the following raw materials in parts by mass: 60 to 70 parts of hydroxypropyl starch, 9 to 20 parts of carrageenan, 5 to 15 parts of diquat, 5 to 15 parts of polylysine, 5 to 10 parts of hydroxypropyl methyl cellulose acetate succinate, 15 to 20 parts of glycerol and 30 to 40 parts of pure water. According to the soft capsule shell, hydroxypropyl starch serves as a base material, gelatin is not added, the conditions of poor weather resistance and fishy smell caused by use of gelatin are avoided, through the synergistic effect of all the components, the defects that a starch-based material is poor in plasticity, fragile and insufficient in mechanical strength are overcome, the structural stability is enhanced through chemical crosslinking, and the mechanical strength is improved; and the mechanical property is improved by virtue of physical compounding, so that the low-temperature resistance, high-temperature resistance and mechanical strength of the capsule skin are improved.

The invention discloses high-performance fluid-state solidified soil for backfill based on composite ardealite of building residue soil, which is prepared by taking the building residue soil as a core raw material, taking a compound of a polycarboxylic acid water reducer and hydroxypropyl methyl cellulose as a fluidization regulator, and mixing the fluidization regulator and the building residue soil to prepare the high-performance fluid-state solidified soil for backfill. Superfine slag powder, fly ash, nano silicon dioxide, metakaolin and ardealite are used as curing agents, so that the fluid-state solidified soil with strong performance is obtained. Through the synergistic effect of all the components and innovative processes such as liquid nitrogen low-temperature grinding, nano material compounding and a segmented vacuum stirring process, the effect that the ultrahigh strength of the construction waste soil reaches 7.5 MPa within 14 days is achieved for the first time and is improved by 40% or above compared with that of conventional solidified soil, and the industrial problem that traditional waste soil is insufficient in solidification strength is solved; and collaborative optimization of strength and fluidity is realized. Meanwhile, efficient resource utilization of the construction waste is achieved, land occupation and environmental pollution caused by muck landfill are greatly reduced, and the requirement for green and sustainable development is met.

The invention discloses an ovarian protection composition containing ergothioneine and a preparation method of the ovarian protection composition, and relates to the technical field of ovarian protection compositions. The ovary protection composition containing the ergothioneine is prepared from the following components in parts by mass: 0.1 to 0.5 part of the ergothioneine, 0.05 to 1 part of S-equol, 1 to 5 parts of reducing coenzyme Q10, 1 to 3 parts of vitamin E, 10 to 20 parts of chitosan oligosaccharide, 30 to 50 parts of microcrystalline cellulose, 3 to 8 parts of hydroxypropyl methyl cellulose, 0.5 to 2 parts of silicon dioxide and 0.5 to 2 parts of a stabilizer. By adopting the stabilizer, photooxidation and hydrolysis of sensitive components are inhibited through molecular action, and the long-term stability of the composition in a humid and hot environment is remarkably improved in combination with the physical barrier action of silicon dioxide. Through the antioxidant synergistic effect of the ergothioneine and the vitamin E, the hormone regulation effect of the S-equol and the energy metabolism improvement effect of the coenzyme Q10, a multi-layer ovarian function protection system is constructed, and the health state of ovaries is improved. Through a special process, the tablet can be rapidly disintegrated and slowly released in an intestinal targeted manner, burst release of active ingredients is avoided, and the absorption efficiency is improved.

The invention relates to the technical field of building materials, and provides washing gangue concrete with high slump loss resistance and a mixing process thereof. The high-slump-retaining washed gangue concrete is prepared from the following raw materials in parts by weight: 200 to 220 parts of cement, 140 to 150 parts of mineral powder, 60 to 65 parts of fly ash, 680 to 720 parts of machine-made sand, 950 to 970 parts of washed gangue, 150 to 160 parts of water, 16 to 17.5 parts of a water reducing agent, 0.15 to 0.3 part of a slump retaining agent and 4 to 4.3 parts of polyethylene glycol. The slump retaining agent is hydroxypropyl methyl cellulose ether; and the viscosity of the hydroxypropyl methyl cellulose ether is 100 thousand mPa.s to 300 thousand mPa.s. According to the technical scheme, the problems of poor slump retaining performance and low compressive strength of washed gangue concrete in the prior art are solved.

The invention discloses multi-scale toughened full-solid-waste ultrahigh-ductility concrete, which is prepared from the following raw materials in parts by weight: 500 to 650 parts of full-solid-waste cementing materials, 110 to 150 parts of calcined coal gasification slag, 190 to 250 parts of calcined fly ash, 20 to 40 parts of silica fume, 10 to 30 parts of metakaolin, 780 to 930 parts of washed sand, 10 to 25 parts of fly ash fibers, 0.6 to 0.9 part of hydroxypropyl methyl cellulose, 20 to 30 parts of polycarboxylic acid water reducing agents and 300 to 400 parts of water. The calcined coal gasification slag is subjected to gradient heating to 800-960 DEG C, heat preservation is conducted for 30-60 min, then the calcined coal gasification slag is cooled to the room temperature at the cooling rate of 10-15 DEG C / min, and the calcined coal gasification slag is obtained after powder grinding. According to the multi-scale toughened full-solid-waste ultrahigh-ductility concrete provided by the invention, the toughness and the mechanical property of the concrete can be enhanced, the performance of the concrete in an extreme environment is improved, meanwhile, the solid waste utilization rate is increased, and the production cost of the concrete is reduced.

The invention discloses a normal-temperature bacteria liquid enteric-coated targeted colonization microcapsule and a preparation method thereof. The invention belongs to the technical field of biological medicine. The structure of the room-temperature bacterial liquid protection microcapsule is as follows: an inner layer is an activity maintaining layer and mainly consists of a sodium alginate-calcium chloride polyelectrolyte compound (the thickness is 50-100 microns); the middle layer is a pH response release layer and is mainly composed of hydroxypropyl methyl cellulose phthalate (HPMCP, dissolved at pH of 6.8 or above) and nano calcium carbonate particles (the particle size is 50nm, and the proportion is 10% w / w); the outer layer is a mucous membrane adhesion layer, and the main components of the mucous membrane adhesion layer comprise fucose modified chitosan (Fuc-CS, targeted colonic mucous membrane lectin protein) and carbomer 940 (pH sensitive adhesion polymer); the method is a microcapsule capable of preserving the bacterial liquid at normal temperature and accurately targeting colon release and adhesion colonization and a process thereof, the problem of flora activity loss caused by a freeze-drying process can be solved, in addition, the process does not need freeze-drying equipment, and the production cost is reduced.

The invention relates to the technical field of steel-cored aluminum stranded wires, and provides an overhead high-conductivity steel-cored aluminum stranded wire which comprises a galvanized steel core and aluminum wires stranded on the surface of the galvanized steel core, the galvanized steel core is formed by stranding 19 steel wires, and the aluminum wires are divided into two layers and stranded on the outer side of the galvanized steel core; the preparation method of the galvanized steel core comprises the following steps that after being galvanized, a steel wire is added into a passivation solution to be passivated, and the galvanized steel core is obtained after drying and twisting; the passivation solution is prepared from the following raw material components: waterborne acrylic resin, nickel nitrate, sodium carboxymethyl cellulose, sodium dodecyl sulfate, functionalized single-walled carbon nanotubes and water; the functionalized single-walled carbon nanotube is prepared from the following raw materials: a single-walled carbon nanotube and 5-carboxyl-2, 3-diaminopyridine. According to the technical scheme, the problem that the corrosion resistance of the manufactured overhead steel-cored aluminum stranded wire is poor due to the fact that the corrosion resistance of a galvanized steel core is poor in the prior art is solved.

The invention provides a gel dressing and a preparation method thereof, and belongs to the technical field of medical materials.The gel dressing comprises a basement membrane which is a PVA membrane; the gel layer is arranged on the surface of the basement membrane, and the gel layer is prepared from recombinant collagen, exosome, sodium hyaluronate, sodium carboxymethyl cellulose, chitosan and water; the microneedles are evenly arranged on the side, away from the basement membrane, of the gel layer, the microneedles are made of polylactic acid-hydroxy acid copolymer, and the needle tips of the microneedles are loaded with recombinant collagen and exosomes. A skin channel is opened through the microneedle array, the permeation efficiency of recombinant collagen and exosome is improved by multiple times, a large number of active ingredients can quickly reach the deep layer of the skin, and the skin repairing effect is remarkably enhanced.

The invention discloses a magnesium reinforced porcelain black underglaze coloring agent as well as a preparation method and application thereof, and belongs to the technical field of underglaze coloring agents. The magnesium porcelain reinforced porcelain black underglaze coloring agent comprises the following solid components in percentage by weight: 12-15% of potassium feldspar, 9-15% of albite, 9-12% of calcite, 11-15% of quartz, 16-20% of kaolin, 1-1.2% of methyl cellulose and 31-34% of cobalt black pigment. Wherein the weight content of K2O in the potassium feldspar is greater than or equal to 10%; the weight content of Al2O3 in the kaolin is greater than or equal to 37%; and the weight content of Co3O4 in the cobalt black pigment is 15-25%. The prepared black underglaze coloring agent can be well suitable for a magnesium reinforced porcelain body and a cover glaze of a low-temperature fritted glaze, an obtained black underglaze product is full and pure in color development, the blue bleaching phenomenon does not occur after decoration firing, and meanwhile the glaze surface is free of orange color and pinholes.

The invention relates to the field of building material construction, and discloses a construction method of foam lightweight concrete suitable for long-distance pipeline transportation, and the construction method comprises the following steps: selecting a high-pressure hose with the pipe diameter of DN 100mm-DN 150mm as a pumping pipeline; before the foam lightweight concrete is conveyed, a hydroxypropyl methyl cellulose aqueous solution with the mass concentration of 0.05%-0.15% is used for pre-wetting the pumping pipeline, and a lubricating layer is formed on the inner wall of the pumping pipeline; and the foam lightweight concrete is conveyed to a construction area through the pumping pipeline to be poured. According to the method, through construction process improvement (pipeline lubrication and buffer pouring), the foam light soil can be transported for a long distance (larger than or equal to 500 m).

The invention relates to the technical field of building materials, and particularly discloses an efficient and energy-saving building thermal insulation material and a preparation method. The material is prepared from modified aerogel, composite mineral fibers, phase change energy storage microcapsules, nano silicon dioxide, waterborne epoxy resin, a polyamide curing agent, expanded perlite, hollow glass beads, hydroxypropyl methyl cellulose, amino modified polyurethane microspheres and nano boron nitride, and the functions of all the components are complemented to form a synergistic system. The preparation method sequentially comprises the following steps: pretreatment of the composite mineral fibers, activation of the amino modified polyurethane microspheres, synergistic dispersion of multiple components, preparation of a bonding system, gradient mixing of materials and molding post-treatment. The material can be widely applied to heat preservation and insulation scenes such as building outer walls and roofs, and has the core advantages of being excellent in heat preservation and insulation, stable in mechanical strength and reliable in long-acting performance; the preparation method disclosed by the invention is refined in process, controllable in parameters, high in repeatability, capable of ensuring uniform product performance and beneficial to industrial large-scale production.

The invention discloses a wear-resistant high-gloss nano liquid, a wear-resistant high-gloss ceramic tile and a preparation method of the wear-resistant high-gloss ceramic tile, and belongs to the technical field of ceramic manufacturing. The wear-resistant high-gloss nano liquid at least comprises a component A, a component B and a component C which are independently subpackaged, wherein the component A comprises large-particle silica sol, boric acid, sodium methyl silicate, carboxymethyl cellulose sodium, a boronizing stabilizer and the balance of water; the component B comprises a boronizing stabilizer and the balance of water-based modified silicone oil; and the component C is wax emulsion. Through systematic material and process innovation, the ceramic tile which is high in gloss, strong in antifouling property, durable in wear resistance and high in transportation performance is prepared, and the market requirements of surface treatment materials which are high in performance, low in cost and easy to transport are met.

The invention relates to the technical field of green building materials, in particular to phase-change energy-storage thermal insulation mortar and a preparation method of the phase-change energy-storage thermal insulation mortar. 25 to 40 parts of methyl palmitate; 120 to 180 parts of hydrophobic perlite; 8 to 15 parts of expanded graphite; 3-6 parts of phosphorus sheet-shaped aluminum nitride; 180 to 250 parts of sulphoaluminate cement; 60 to 100 parts of volcanic rock micro powder; 0.3 to 0.8 part of hydroxypropyl methyl cellulose; 0.6 to 1.2 parts of a polycarboxylic acid water reducing agent; 2 to 4 parts of nano aluminum oxide; 0.8 to 1.5 parts of propyl gallate; and 1-2 parts of zinc borate. Through the proportion design of the antioxidant flame-retardant microcapsules and the lightweight composite aggregate, the problems of poor thermal conductivity and insufficient durability of a traditional phase change material are solved. Through phase change material loading, interface modification and multi-component cooperative regulation, the thermal insulation performance, energy storage efficiency and structural stability are remarkably improved, and the material is suitable for the fields of building energy saving, intelligent temperature control and the like.

A solid gel foam fire extinguishing agent includes a material A and a material B; the material A includes the following components in mass percentage: 18% to 25% of an inorganic silicate, 0.25% of sodium carboxymethyl cellulose, 0.25% of sodium alginate, 0.1% to 0.5% of xanthan gum, 0.5% to 1% of polyvinyl alcohol, 0.5% to 1.5% of sodium lauryl sulfate, 0.01% to 0.05% of dodecanol, 0.005% to 0.01% of disodium ethylenediaminetetraacetate, and water as a balance; and the material B includes the following components in mass percentage: 25% of sodium dihydrogen phosphate, 25% of acetic acid, 1% to 1.5% of fatty alcohol polyoxyethylene ether, 0.1% to 0.5% of 3% aqueous film-forming foam, 0.01% to 0.05% of the dodecanol, and water as a balance. The fire extinguishing agent exhibits advantages including low density, low oil wettability, high resistance, high adhesiveness, and foam collapse-resistant properties in fire resistance.

The invention belongs to the technical field of textile pretreatment processes, and particularly discloses a low-temperature washing-free short-process pretreatment process which comprises the following steps: (1) padding a fabric in a working solution, and stirring for 10-12 hours at 20-25 DEG C. The working solution comprises the following raw materials: a scouring agent, an alkali-resistant penetrant OEP-70, hydrogen peroxide, sodium silicate, ethylenediamine tetra (methylene phosphonic acid) pentasodium salt, caustic soda and water; (2) adding a water-free washing agent into the fabric subjected to padding treatment, and heating for 10-15 minutes at the temperature of 98-100 DEG C; (3) carrying out deoxidization treatment on the treated fabric; (4) immersing the treated fabric into the complex liquid, and stirring for 20-25 minutes at the temperature of 40-45 DEG C; the composite liquid is prepared from sodium dodecyl sulfate, modified chitosan, carboxymethyl cellulose, modified plant ash, polyethylene glycol and water. The fabric treated by the method is low in water consumption and high in dyeing efficiency and dye uptake, and the quality of the fabric is improved.

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

The invention relates to the field of fertilizers, in particular to a method for preparing an organic fertilizer by anaerobic fermentation of tylosin dregs, which comprises the following steps: (1) electron beam irradiation treatment; (2) adding the mushroom dreg powder into an ethanol solution, and treating with a coupling agent KH-550 to obtain aminated mushroom dregs; (3) preparing to obtain phosphorylated hydroxypropyl methyl cellulose; (4) mixing the aminated mushroom dregs and the phosphorylated hydroxypropyl methyl cellulose in an organic solvent for reaction to obtain phosphorylated hydroxypropyl methyl cellulose composite active mushroom dregs; and (5) composting to finally obtain the organic fertilizer. According to the organic fertilizer and the preparation method thereof, the tylosin mushroom dregs are subjected to modification treatment, anaerobic fermentation treatment and aerobic fermentation treatment, so that the content of antibiotic tylosin in the finally prepared organic fertilizer is greatly reduced, the industrial requirements can be met, the content of organic matters in soil can be increased, the soil structure can be improved, and the soil fertility can be improved; the plant growth is facilitated.

The invention belongs to the technical field of gas analysis, and relates to a surface-enhanced Raman scattering flexible substrate material as well as a preparation method and application thereof. The surface-enhanced Raman scattering flexible substrate material comprises a three-dimensional network structure and silver nanoparticles, the three-dimensional network structure is composed of hydroxypropyl methyl cellulose nanofibers, the silver nanoparticles are wrapped in the hydroxypropyl methyl cellulose nanofibers, and the silver nanoparticles are of a polyhedral structure. The surface-enhanced Raman scattering flexible substrate material is used for detecting thiol compounds in a solution, and the detection limit can reach 10 <-19 > M level; after the surface of the silver nanoparticle is modified with the probe, the material can detect trace substances in exhaled air. In addition, after the material is stored for 6 months at room temperature, the SERS signal intensity attenuation is less than or equal to 4%, and the relative standard deviation detected by 20 random sites is only 4.04%.

The invention discloses high-barrier waterproof and oil-proof meal package paper and a preparation method thereof, and relates to the technical field of food packaging materials. The invention discloses a preparation method of high-barrier waterproof and oil-proof meal package paper, which comprises the following steps: coating raw paper with waterproof and oil-proof glue to obtain the high-barrier waterproof and oil-proof meal package paper, the waterproof and oil-proof glue comprises the following raw materials in percentage by weight: 1-2% of modified chitosan, 4-5% of carboxymethyl cellulose, 0.3-0.5% of nano cellulose, 0.15-0.25% of modified nano mesoporous silica, 0.3-0.42% of a bio-based cross-linking agent and the balance of a solvent, and the sum of the weight percentages of the raw materials is 100%. The prepared meal package paper is good in waterproof and oil-proof effects, and the folding strength of the coating is high.

The invention discloses a solid ultrasonic gel patch as well as a preparation method and application thereof, and belongs to the technical field of medical chemistry. The solid ultrasonic gel patch is prepared from an acrylamide monomer, polyvinyl alcohol, sodium polyacrylate, sodium carboxymethyl cellulose, nano silicon dioxide, propylene glycol, glycerol, acrylic acid, triethanolamine, a cross-linking agent, an initiator and water according to a specific ratio. The prepared solid ultrasonic gel patch is highly matched with human soft tissue in acoustic impedance (about 1.62-1.63 * 10 < 6 > Pa.s / m), low in acoustic attenuation coefficient (less than or equal to 0.034 dB / (cm.MHz)), moderate in skin adhesion, excellent in flexibility and moisture retention, capable of solving the problems that a traditional ultrasonic coupling agent is inconvenient to use, easy to dry, poor in experience and the like, and suitable for acoustic wave conduction in ultrasonic examination and treatment.

The invention relates to amino silicone oil emulsion as well as a preparation method and application thereof, and belongs to the technical field of silicone oil emulsion. A preparation method of the amino silicone oil emulsion comprises the following steps: mixing amino silicone oil, cocamidopropyl betaine and polyether modified silicone oil to obtain a homogeneous oil phase, adding deionized water in a gradient manner, and carrying out double refining to obtain a homogeneous phase; 3-aminopropyltrimethoxysilane and polyether modified polydimethylsiloxane are added for treatment, a modified homogeneous phase is obtained, hydroxymethyl cellulose and porous nano-silica are added, and mixing is performed to obtain the coating. Through compounding of the amino silicon oil, the cocamidopropyl betaine, the polyether modified silicon oil, the amino propyl trimethoxy silane, the polyether modified polydimethylsiloxane and the porous nano silicon dioxide, the stability of the amino silicon oil is synergistically improved, and the fabric is endowed with good flexibility and durability.

The invention belongs to the field of soil solidification, and particularly relates to a method for reinforcing a loess foundation through cooperation of EICP and rice husks. Comprising the following steps: 1, compounding long and short rice hull fibers, and sequentially carrying out alkali treatment activation, coupling agent modification and hydroxypropyl methyl cellulose reinforcement treatment; 2, calcining rice hulls, and grinding to obtain rice hull ash; 3, mixing a composite reinforcing agent obtained by compounding the modified and reinforced rice hull fibers and rice hull ash with loess to be reinforced; 4, mixing the urease extracting solution with a reinforcing solution containing urea and calcium ions, and adjusting the pH value to weak acidity to obtain mixed slurry; and 5, the mixed slurry is sprayed into the to-be-reinforced loess mixed with the composite reinforcing agent, and after grouting is finished, the surface of the soil body is covered with a film and subjected to water spraying maintenance. Through synergistic cooperation of the rice hull fibers and the rice hull ash, the common problems of non-uniform cementation and poor deep reinforcement effect during loess reinforcement by an EICP technology are effectively solved.

The invention relates to absorbable adhesive styptic powder and a preparation method thereof, and the absorbable adhesive styptic powder is characterized in that the absorbable adhesive styptic powder is formed by cross-linking aldehyde polysaccharide and a polyamino compound through Schiff base reaction, the raw materials are selected from at least one of glucan, sodium carboxymethyl cellulose, sodium hyaluronate, chitosan and carboxymethyl starch; the polyamino compound is selected from at least one of polylysine, polypeptide, bovine serum albumin and polyamine; the styptic powder is porous particles with the particle size of 10-1000 meshes, is cured into gel within 10 seconds after being in contact with body fluid, and is completely degraded within 15-60 days. According to the scheme, the styptic powder has the advantages of rapid wet adhesion, controllable degradation and excellent processability, and is an urgent clinical demand.

The invention relates to a preparation method of a halogen-free flame-retardant coating, in particular to a preparation method of a halogen-free flame-retardant polyacrylate coating for polyester fabrics, which comprises the following steps: (1) preparing a polyacrylate emulsion; (2) preparing a flame retardant dispersion liquid; (3) preparation of a flame-retardant coating: mixing the flame retardant dispersion liquid and a polyacrylate emulsion according to a weight ratio of (0.8-1.3): 1, stirring and mixing uniformly, and then adding a phosphorus-containing polyaziridine cross-linking agent, the weight ratio of the phosphorus-containing polyaziridine cross-linking agent to the polyacrylate emulsion being (0.01-0.05): 1; adjusting the pH value of the coating to 8-9 by using ammonia water with the concentration of 25%; the weight ratio of the hydroxypropyl methyl cellulose to the polyacrylate emulsion is (0.005-0.02): 1, and uniformly mixing the hydroxypropyl methyl cellulose and the polyacrylate emulsion to obtain the polyacrylate flame-retardant coating. The polyacrylate emulsion prepared by the invention has good monomer composition, and can ensure that the flame-retardant polyacrylate coating has good adhesion performance.

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

The invention discloses injection type facial filler composition gel for medical beauty as well as a preparation method and application of the injection type facial filler composition gel, and belongs to the technical field of biomedical materials. The composition gel comprises a combined gel matrix and polycaprolactone microspheres, wherein the combined gel matrix comprises an aqueous solution for injection, sodium carboxymethyl cellulose and human recombinant collagen; according to the composition gel, a combined gel matrix and polycaprolactone microspheres are mixed according to a specific proportion, amino acid residues of human-derived recombinant collagen in the combined gel matrix serve as binding sites of cell surface receptors to improve the cell recognition and attachment capacity of the polycaprolactone microspheres, and the amino acid residues are organically combined with sodium carboxymethyl cellulose to improve the cell recognition and attachment capacity of the polycaprolactone microspheres. The durability and biocompatibility of the shaping effect of the human-derived recombinant collagen at the injection site are improved; the composition prepared by the invention is good in gel fluidity, high in elastic modulus and high in dynamic viscosity, and can meet the expected mechanical and rheological properties of a facial filling agent for cosmetic and plastic surgery.