1878 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 belongs to the field of building decoration materials, and discloses a GRG gypsum composite reinforced material and a preparation method thereof. The high-strength concrete is prepared from the following components in parts by weight: 45 to 65 parts of alpha-semi-hydrated gypsum, 12 to 20 parts of composite reinforced fiber, 0.5 to 2 parts of graphene nanofiber, 2 to 5 parts of nano silica fume, 5 to 10 parts of ethylene-vinyl acetate copolymer latex powder, 1 to 2.5 parts of hydroxypropyl methyl cellulose, 0.1 to 0.8 part of polycarboxylic acid type water reducing agent, 1 to 4 parts of calcium stearate, 3 to 8 parts of vermiculite powder and 28 to 40 parts of deionized water. Aiming at the problems that an existing GRG material is insufficient in mechanical property, low in fireproof grade, poor in thermal performance, poor in durability and the like, a multi-dimensional synergistic enhancement system is constructed by adopting composite reinforced fibers, functional nanofiller and a gradient preparation process, the problems of dispersion and interfacial compatibility of the nanofiller are solved, and the comprehensive performance of the GRG material is improved. The performance breakthrough of high strength, high fire resistance, low heat conduction and long durability is realized.

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 belongs to the technical field of new building materials, and provides a low-alkalinity and early-strength ardealite filling and curing material and a preparation method thereof.The low-alkalinity and early-strength ardealite filling and curing material is prepared from ardealite, a curing agent and water, the curing agent comprises silica fume, limestone powder, superfine granulated blast furnace slag powder, metakaolin, calcium aluminate powder, Portland cement clinker powder, a suspension stabilizer and hydroxypropyl methyl cellulose ether. The problems of delayed coagulation, low early strength and high alkalinity of a common cement-based ardealite filling material can be solved, and the technical requirements of ardealite cemented filling are met.

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 relates to a whitening composition containing pH-sensitive oxidized resveratrol hydrogel and application. The whitening composition is a composition of oxidized resveratrol hydrogel, a hydrolyzed opuntia pear flower extract and a mexican agastache rugosus flower / leaf / stem extract in a weight ratio of 1: (0.6-0.7): (0.01-0.02). The oxidized resveratrol hydrogel is prepared from the following raw materials in percentage by weight: 1 to 3 percent of oxidized resveratrol, 1 to 3 percent of 3-o-ethyl ascorbic acid, 15 to 20 percent of butanediol, 0.1 to 0.5 percent of sodium alginate, 0.1 to 0.5 percent of carboxymethylcellulose, 0.3 to 0.8 percent of calcium chloride and the balance of water. The three components of the whitening skincare product have a remarkable synergistic effect in the whitening aspect, the skin color can be jointly improved from different mechanisms, and meanwhile, the mildness and the safety are considered.

The invention discloses a self-adaptive control method for underground coal mine hole sealing and grouting, and belongs to the technical field of well hole packing. The method comprises the steps that plugging bags are sequentially installed at the cross sections of two drill holes of an underground coal mine working face, compressed air is injected into the plugging bags, and a cylindrical space between the bags is filled with multi-stage coal powder distribution materials in a layered mode and compacted; mixing ordinary Portland cement, a composite expanding agent, a carboxyl water reducer, a hydroxypropyl methyl cellulose stabilizer and water according to a preset ratio, and screening; stepwise pressure injection is implemented, and the grouting pressure and rate are regulated and controlled in a variable-rate climbing mode, a constant-pressure variable-speed mode and a proportional attenuation mode; and constant-temperature and constant-humidity maintenance is conducted on the grouting completion area, so that the desorption value of the drilling cuttings is reduced to a target value. According to the scheme, the grouting process parameters can be optimized, and the grouting quality is 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 a method for realizing pure pore size regulation and control of a silicon carbide ceramic membrane, which comprises the following steps of: a) adding silicon carbide, sodium carboxymethyl cellulose and a dispersing agent into water, and uniformly ball-milling to obtain spraying slurry; and b) spraying the spraying slurry to the surface of a silicon carbide ceramic membrane to be regulated and controlled, naturally airing, carrying out vacuum drying at 75-85 DEG C for 2-5 hours, putting into a high-temperature furnace, carrying out vacuum sintering at 800-1200 DEG C for 1-3 hours, putting into a muffle furnace, and carrying out oxidation sintering at 700-900 DEG C for 25-45 minutes. According to the method, the pore size of the silicon carbide ceramic membrane can be subjected to pure regulation and control, operation is easy, cost is low, large-scale production is easy to achieve, the influence on the thickness of an original membrane is small, the membrane layer firmness is good, the filter flux of pure water is still high, and the application value of the silicon carbide ceramic membrane in water treatment is remarkably improved.

The invention belongs to the technical field of veterinary preparations, and particularly relates to a tilmicosin premix and a preparation method thereof. The tilmicosin premix is prepared from the following raw materials: tilmicosin, a polylactic acid-glycolic acid copolymer, lecithin, modified hydroxypropyl methyl cellulose, grafted polyvinylpyrrolidone, polyethylene glycol and an antioxidant, a solid dispersion is formed through lecithin and grafted polyvinylpyrrolidone, the solubility and stability of tilmicosin are enhanced, polylactic acid-glycolic acid copolymer nano-microspheres are prepared through a double-emulsion solvent evaporation method, slow release of drugs is achieved, dodecyl modified hydroxypropyl methyl cellulose and polyethylene glycol are combined, and the sustained release effect is achieved. The solubility and the slow release characteristic are further enhanced. The activity of the granular premix is effectively preserved, and the granular premix is convenient to use and transport.

The invention discloses a solid waste-based cold-mixed asphalt mixture for preventive maintenance as well as a preparation method and application thereof, and belongs to the technical field of road engineering. The solid waste-based cold-mixed asphalt mixture is prepared from the following components in percentage by mass: 4.7 to 8.6 percent of modified cold-mixed asphalt adhesive, 85.8 to 93.9 percent of aggregate and 1.4 to 5.6 percent of composite filler, the modified cold-mixed asphalt adhesive is prepared from the following components in parts by weight: 86 to 96 parts of emulsified asphalt, 1 to 5 parts of bisphenol A type waterborne epoxy resin emulsion, 0.05 to 1 part of curing agent, 0.01 to 0.05 part of defoaming agent, 1.5 to 8 parts of waterborne polyurethane emulsion and 1 to 3 parts of hydroxypropyl methyl cellulose. The solid-waste-based cold-mixed asphalt mixture prepared by the method shows excellent comprehensive performance in high-temperature rut resistance, water damage resistance, freeze-thaw resistance, skid resistance, volume stability, interlayer shear resistance and the like, promotes reasonable utilization of solid waste resources, and has good economic and environmental benefits.

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 discloses an injectable filling agent. The injectable filling agent comprises polyester microspheres and sodium carboxymethyl cellulose gel, wherein after the sodium carboxymethyl cellulose gel is sterilized, the elastic modulus G of the sodium carboxymethyl cellulose gel at the frequency of 1Hz is 190-800Pa, and the ratio G / G of the elastic modulus G to the viscous modulus G is 1.1-2.5. The injectable filling agent has ideal viscoelasticity, the polyester microspheres are good in dispersion stability and moderate in pushing force in the preparation, the problems of needle blockage or complications induction and the like are not prone to occurring during injection, the use safety is high, the filling effect is natural, the attractiveness is high after injection, cohesiveness is good, and the problems of displacement and the like are not prone to occurring after injection.

The invention provides an antioxidant enzyme-containing composition and a preparation method thereof, and relates to the technical field of enteritis treatment. The preparation method comprises the following steps: S1, collecting various component materials for preparing the antioxidant enzyme-containing composition: collecting various raw materials for preparing glucan, fructo-oligosaccharide, galactooligosaccharide, superoxide dismutase, vitamin C, bunge cherry seed powder, cassia seed powder, turmeric, sorbitol, hydroxypropyl methyl cellulose, silicon dioxide and magnesium stearate; according to the invention, a matched powder bagging machine is adopted to realize full-automatic unattended operation to automatically complete the large bag filling and sealing step in the steps S4-S10, vacuumizing is performed firstly and then sealing is performed, and the storage space is compressed by vacuumizing, so that the condition that the bag is expanded and broken by internal air pressure in the transfer and storage process is not easy to cause; in the bag sealing process, the phenomena of high hot melting efficiency and high sealing speed are achieved by adopting a bag strip guiding and rolling hot melting mode.

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 building materials, and discloses fire-resistant decoration waste exterior wall external thermal insulation mortar and a preparation method thereof. The fire-resistant decoration waste exterior wall external thermal insulation mortar comprises the following raw material components in parts by weight: 60-410 parts of cement; 120 to 550 parts of decoration waste recycled aggregate; 36 to 75 parts of SiO2 aerogel; 8 to 17 parts of a silane coupling agent; 1.3 to 2.1 parts of dispersible latex powder; 0.5 to 1.0 part of methyl cellulose; 7-15 parts of a water reducing agent; 0.2 to 0.4 part of an air entraining agent; and 120 to 180 parts of water. According to the invention, the low-cost and high-strength decoration waste recycled aggregate is used for partially replacing expensive and low-strength aerogel, so that the thermal insulation performance of the mortar is ensured, and the material cost is greatly reduced; the decoration garbage exterior wall external thermal insulation mortar can resist high-intensity fire disasters with the highest temperature of 1000 DEG C and the fire receiving time of 2.5 h, and can be applied to exterior wall external thermal insulation systems of high-rise and super high-rise buildings with high fire extinguishing difficulty.

The invention relates to the technical field of suspending agent preparation, and discloses a macroelement water-soluble fertilizer suspending agent, which comprises macroelements, medium trace elements, a suspending agent and an auxiliary agent, and a preparation method of the macroelement water-soluble fertilizer suspending agent comprises the following steps of: preparing the macroelement water-soluble fertilizer suspending agent; the preparation method comprises the following steps: S1, raw material pretreatment, S2, macroelement dissolution, S3, medium trace element addition, S4, suspending agent and auxiliary agent addition, S5, fine treatment, and S6, packaging and storage, the stability of the suspending agent is significantly enhanced: a more stable suspension system is constructed by precisely adjusting the ratio of xanthan gum to the sodium carboxymethyl cellulose suspending agent, and the unique component proportion enables the fertilizer to have a better effect after the fertilizer is stored for 6 months. The nutrient precipitation rate can still be kept below 5%, the uniformity of the fertilizer in the storage and transportation process is effectively guaranteed, farmers do not need to worry about uneven fertilization caused by nutrient precipitation in the application process, it is guaranteed that crops can continuously and evenly absorb nutrients, and healthy growth is promoted.

The invention provides hydrogel wound dressing and a preparation method thereof.The hydrogel wound dressing comprises a hydrogel layer, a supporting layer and a protective layer, the hydrogel layer is prepared from, by mass, 10%-15% of polyvinylpyrrolidone, 5%-8% of polycaprolactone, 2%-4% of sodium carboxymethyl cellulose, 1%-3% of chitosan, 0.5%-1.5% of an antibacterial agent, 0.1%-0.3% of an antioxidant and the balance water; the invention discloses a graphene quantum dot gel which comprises the following components in percentage by weight: 0.01-0.1% of a growth factor, 0.1-0.5% of a temperature-sensitive polymer, 0.05-0.15% of graphene quantum dots, 0.5-1.5% of a self-healing polymer, 0.5-1.5% of a pH sensitive material, 0.1-0.3% of nano titanium dioxide and the balance of deionized water. The supporting layer is a porous polylactic acid film, and the thickness of the supporting layer is 0.1-0.3 mm; the protective layer is an air-permeable polyurethane film, and the thickness of the protective layer is 0.2-0.4 mm. Through the synergistic effect of an antibacterial agent, nano titanium dioxide and graphene quantum dots, the antibacterial performance of the dressing is remarkably improved.

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 relates to a sodium carboxymethyl cellulose modified ultrathin alkaline water electrolysis composite diaphragm as well as a preparation method and application thereof. The alkaline electrolytic water diaphragm provided by the invention not only has excellent hydrophilicity and low surface resistance, but also has high gas barrier property and excellent mechanical property. In addition, the diaphragm is simple in preparation process and low in cost, and has industrial application potential.

The invention discloses low-carbon flow-state solidified soil for a seasonal frozen region. The low-carbon flow-state solidified soil comprises soil, a curing agent and water, the dosage of the curing agent is 15-20% of the mass of the dry soil; the water content is 40-60% of the dry mass of the soil and the curing agent; the soil comprises sludge and building residue soil, and the sludge accounts for 20-40 parts by weight, and the building residue soil accounts for 60-80 parts by weight; the curing agent is prepared from the following components in parts by weight: 40 to 60 parts of phosphogypsum, 10 to 15 parts of mixing plant waste slurry, 20 to 40 parts of steel slag, 5 to 10 parts of quick lime, 0.5 to 1.2 parts of glycerol, 0.2 to 0.6 part of hydroxypropyl methyl cellulose and 1 to 1.5 parts of water reducing agent; according to the invention, various technical problems of insufficient anti-freezing performance, unstable fluidity, long setting time, insufficient early strength, large shrinkage deformation, easy generation of segregation and bleeding and the like of the existing fluid-state solidified soil are solved, and meanwhile, more low-carbon environment-friendly raw materials are introduced, so that multi-aspect improvement of the performance of the fluid-state solidified soil and maximization of environment-friendly benefits are realized; and a more reliable and efficient solution is provided for earthwork such as foundation pit backfilling.

The invention discloses a slow-release phosphorus removal material and a preparation method and application thereof, and belongs to the technical field of sewage treatment, the slow-release phosphorus removal material comprises the following components by mass: 40-55 parts of calcium peroxide, 25-35 parts of a binder, 2-5 parts of bentonite, 5-20 parts of calcined oyster shell powder, and 10-25 parts of iron-loaded modified red soil; the binder is prepared from Portland cement, polyacrylic acid and hydroxypropyl methyl cellulose ether according to the mass ratio of 1: (0.2 to 1): (0.1 to 0.8). Under the synergistic effect of the calcium peroxide, the binder, the bentonite, the calcined oyster shell powder and the iron-loaded modified red soil, the filter material can be used as a phosphorus removal filter material, can be directly used as a filter material of a filter tank, a wetland and the like independently or in combination with quartz sand, gravel and other filter bed filter materials, can permanently remove phosphorus in surface water, can also be directly put into rivers, lakes and ponds, and can be used as a filter material of a filter tank, a wetland and the like. In addition, the preparation cost is low, and wide application prospects are achieved.

The invention discloses a preparation process of instant donkey-hide gelatin granules. The preparation process comprises the following steps: preparing donkey-hide gelatin powder; preparing an adhesive from donkey-hide gelatin powder, hydroxypropyl methyl cellulose, sucrose ester-13 and water; putting the rubber powder into a raw material container of a boiling granulator for granulating; drying the granules in a microwave drying oven; and drying the granules in an infrared electric heating drying box, and spraying a coating agent solution for coating to obtain the instant donkey-hide gelatin granules. Through boiling granulation, a solid dispersion technology and a particle coating and microwave drying technology, the problems that instant donkey-hide gelatin particles are prone to caking, poor in dissolubility and poor in taste are solved, meanwhile, the smell of donkey-hide gelatin is reduced and the solubility is improved through selection of a coating agent, and the instant donkey-hide gelatin particles prepared through the technology reduce the dryness of donkey-hide gelatin, so that the quality of the donkey-hide gelatin particles is improved. Internal heat caused by long-term use of colla corii asini is effectively prevented, the content of volatile alkaline substances in the product is reduced, the stability is improved, and the product quality is improved.

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 present invention provides a preparation method of high-viscosity hydroxypropyl methylcellulose. A preparation method of high-viscosity hydroxypropyl methylcellulose comprises the following steps: grinding and alkalizing refined cotton cellulose; adding methyl chloride and propylene oxide for etherification reaction; successively adding a crosslinking agent and an aqueous fulvic acid solution for reaction; adding potassium naphthylacetate, sodium sulfite and sodium molybdate and then drying. In the present invention, during the etherification reaction of alkalized cellulose, a crosslinking agent prepared by mixing sodium tetraborate and sodium tripolyphosphate is added for crosslinking reaction, which can reduce the content of water-soluble groups of the prepared hydroxypropyl methylcellulose, achieving the effect of increasing the viscosity of hydroxypropyl methylcellulose. Coating the crop surface with the high-viscosity hydroxypropyl methylcellulose not only has a better surface glazing effect, but also can increase its sugar content.

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).