116 results about "Methyl cellulose" patented technology

The application discloses a lithium-free high-heat-resistant ceramic mud and a preparation method thereof, and relates to the technical field of ceramic materials. In the preparation of the lithium-free high-heat-resistant ceramic mud, alumina is reacted with 3-(2,3-epoxypropoxy) propyl trimethoxysilane to obtain pre-modified alumina; the pre-modified alumina is reacted with starch to obtain modified alumina; ethyl acetoacetate, isopropyl alcohol, zirconium oxychloride, aluminum sec-butoxide, polyvinylpyrrolidone and N-N dimethylformamide are mixed to form a spinning solution, the spinning solution is electrospun, and then immersed in yttrium oxide sol to obtain alumina-zirconia-yttria composite fibers; the modified alumina, talc, alumina-zirconia-yttria fibers, hydroxypropyl methyl cellulose, glycerol, oleic acid, polyethylene glycol and water are stirred and mixed, and vacuum pugging is carried out to obtain the lithium-free high-heat-resistant ceramic mud. The lithium-free high-heat-resistant ceramic mud prepared by the application has good thermal shock resistance and bending strength after sintering.

The application provides a coated white surface kraft paper with a back surface not easy to drop hair and powder and a preparation method thereof, and relates to the field of coated white surface kraft paper. The preparation method of the coated white surface kraft paper with a back surface not easy to drop hair and powder comprises the following steps: preparing a coating liquid, primary sizing and secondary coating. The coating liquid is prepared from the following raw materials: heavy pulp calcium, kaolin, starch, butadiene styrene latex, polyvinyl alcohol, sodium carboxymethyl cellulose, water-based epoxy silane, ethylene glycol diglycidyl ether and amino silicone oil. The preparation method can ensure that OCC waste paper boxes are effectively recycled for the back surface of the coated white surface kraft paper, and can overcome the problems of hair and powder dropping and adhesive residue on the back surface of the coated white surface kraft paper, so as to avoid the secondary transfer of hair, powder and adhesive on the back surface of the coated white surface kraft paper to the front surface of the paper, and to ensure the printing effect and printing efficiency of the coated white surface kraft paper.

The application belongs to the technical field of preparation of thermochromic hydrogel, and discloses a thermochromic hydrogel for shielding ultraviolet and near-infrared light and a preparation method and application thereof. The thermochromic hydrogel is prepared by one-pot low-temperature crosslinking with N-isopropyl acrylamide as a temperature-sensitive matrix, hydroxypropyl methyl cellulose as a modified component, titanium dioxide and cesium tungsten bronze as functional fillers, N, N-methylene bisacrylamide as a crosslinking agent, ammonium persulfate and sodium bisulfite as an initiation system. The thermochromic hydrogel realizes full-band regulation of sunlight by using the ultraviolet shielding of titanium dioxide and the near-infrared heat insulation performance of cesium tungsten bronze. The prepared hydrogel has the characteristics of high visible light transmittance, excellent solar light modulation efficiency and suitable critical transition temperature, and makes up for the defect of insufficient spectral shielding capacity of traditional single PNIPAM hydrogel. The process is mild and simple, the raw materials are cheap and easy to obtain, and the hydrogel is easy to form a film in a large area and to be prepared on a large scale, so the hydrogel can be widely applied to the fields of energy-saving and light-regulating such as intelligent windows of buildings, vehicle-mounted light-regulating glass and the like.

This invention provides a flexible biomass RTP thin film material, its preparation method, and its application. The thin film material comprises a biomass substrate and luminescent functional molecules dispersed in the biomass substrate. The biomass substrate includes starch, sodium carboxymethyl cellulose, and a polyol plasticizer. The luminescent functional molecules are selected from at least one of ODQA, BPDA, TDCA, BDF, TPO, QBA, and BBA, and the loading amount of the luminescent functional molecules in the biomass substrate is 0.1wt% to 5wt%. The thin film material exhibits room temperature phosphorescence properties and an elongation at break ≥15%. This invention simultaneously achieves efficient room temperature phosphorescence (RTP) emission and excellent macroscopic mechanical flexibility in a biomass substrate.

This invention belongs to the field of new material preparation and application, specifically relating to a silicon carbide support and its application in hydrogenation catalysts. Using water glass as the silicon source, the pH of the water glass is adjusted to 7.0 with 10% dilute nitric acid. After filtration, washing, and further filtration, a slurry is obtained. Then, methylcellulose is used as the carbon source and mixed with the slurry. After drying, it is calcined at high temperature in a flowing inert atmosphere to form stable carbon-containing silicon carbide powder. Then, methylcellulose is used as a binder for kneading and extrusion molding, followed by high-temperature calcination in air to obtain the desired silicon carbide support. This SiC support has a high specific surface area and, when used in the preparation of hydrogenation catalysts, can effectively reduce the sulfuric acid color of octanol (octenal hydrogenation product) and effectively improve the ultraviolet light transmittance of ethylene glycol (ethylene glycol hydrogenation refining product).

The application discloses an eye preparation composition for treating presbyopia with longer action time and fewer adverse reactions and a preparation method thereof. The composition contains pilocarpine with a mass volume percentage of 0.42-1.02% (equivalent to 0.50-1.20% of hydrochloric acid pilocarpine and 0.55-1.33% of nitric acid pilocarpine), sodium carboxymethylcellulose with a mass percentage of 0.03-0.3%, hydroxyethyl p-henyl-ethyl ester with a mass percentage of 0.03-0.06%, and sodium chloride with a mass percentage of 0.6-0.8%. The prepared pilocarpine eye drops have the advantages of effectively enhancing the corneal permeability of pilocarpine, prolonging the retention time of the eye drops in eyes, reducing the use frequency while improving the pilocarpine miosis effect and treating presbyopia, reducing the irritation and damage of pilocarpine to corneas, and reducing the incidence of systemic adverse reactions compared with the related preparations on the market. In addition, the prescription pH value of the application is 4.0-5.0, which can effectively reduce the generation of impurities such as pilocarpine acid and ensure the product quality in the whole life cycle.

The application relates to the field of building materials and discloses a sound and heat insulation light building material and a preparation method thereof. The light building material comprises cement, fly ash, river sand, quartz sand, a foaming agent, a modified composite filler-based water reducing agent and water. The foaming agent is made of sodium dodecyl sulfate, hydroxypropyl methyl cellulose, modified nano-aluminum oxide and nano-silicon dioxide. The modified nano-aluminum oxide is prepared by the following steps: reacting oleic acid with nano-aluminum oxide, emulsifying through a Pickering emulsion method, and selectively dissociating through a saponification reaction induced by sodium hydroxide. The modified composite filler-based water reducing agent is prepared by the following steps: in-situ esterification modification of a composite filler made by grafting isoprenyl alcohol polyoxyethylene ether on graphene oxide and carbon fiber, and then free radical copolymerization with acrylic acid. The light building material prepared by the application has high compressive strength and flexural strength, small water absorption and good heat insulation performance.

Disclosed herein are compositions and methods of manufacturing, testing, and using a biocompatible and disposable vaginal suppository, comprising chitosan, collagen, carboxymethyl cellulose, and an enzyme, capable of breaking down vaginal mucous and releasing the active ingredients consistently over extended periods of time. Methods disclosed herein may also include the use of these compositions, methods, and devices for treating vaginal diseases, such as vaginitis, genitourinary syndrome, and other conditions, such as vulvar and vaginal cancer, or cervical cancer.

The application discloses a drying method of hibiscus flowers. The method comprises the following steps: 1) enzyme inactivation and color protection: the hibiscus flowers are sequentially immersed in an acidic citric acid-vitamin C solution and a solution added with corn stem and leaf water extract, so as to efficiently inactivate oxidase and protect color; 2) composite film construction: a hibiscus leaf extract solution is used as a natural film-forming matrix, is compounded with hydroxypropyl methyl cellulose and the like to form a film-forming solution, the hibiscus flowers are immersed and coated, and a supercritical CO2 drying technology is used to form a uniform and porous protective film on the petal surface; and 3) hot air drying: two-stage gradient temperature and humidity control is adopted for final drying. The application can significantly inhibit enzyme browning and non-enzyme browning in the drying process, effectively reduce the loss of functional components such as anthocyanins and flavonoids, solve the problems of petal blackening, brittleness, fragility and the like caused by traditional drying, and the finished product is full in shape, bright in color, and green in the whole process.

A pharmaceutical composition comprising: an active pharmaceutical ingredient (API); 1-45 wt% non-gelatin matrix former comprising hydroxypropyl methylcellulose (hypromellose, HPMC), methyl cellulose,

The application discloses a kind of concrete for TBM lining in-situ 3D printing and preparation method thereof, belong to civil engineering materials field.It includes by weight parts: 6000 parts cementitious material, 5400-6600 parts quartz sand, 1290-1350 parts water, 0.6-0.9 parts hydroxypropyl methyl cellulose, 24-36 parts polycarboxylic acid water reducing agent, 6-9 parts calcium formate, 12-18 parts xanthan gum, 300-540 parts MgO expanding agent, 75-105 parts polyoxyalkyl alcohol shrinkage reducing agent, 40-80 parts steel fiber, 120-180 parts Fe3O4 nanoparticles.The cementitious material is mixed by Portland cement and sulphoaluminate cement, and the mass ratio is 1:(0.67-1.5).The concrete has low water-binder ratio, excellent extrudability, fast initial setting and high early strength, and can realize continuous, high-strength and integrated in-situ 3D printing construction of TBM tunnel lining.

This application provides a secondary battery and an electrical device. The secondary battery includes a negative electrode sheet, which includes a negative electrode film layer. The negative electrode film layer includes a first active layer and a second active layer. The first active layer and / or the second active layer includes silicon, and the mass percentage of silicon in the second active layer is higher than the mass percentage of silicon in the first active layer. The first active layer includes a first composite binder, and the second active layer includes a second composite binder. The first composite binder and / or the second composite binder include binder A and binder B. Binder A is styrene-butadiene rubber, and binder B is selected from one or more of polyacrylic acid binders, polyacrylonitrile, hydroxypropyl methylcellulose, methylcellulose, carboxymethyl cellulose, polyvinyl alcohol, acrylonitrile copolymer, sodium alginate, chitosan, and their derivatives. The mass ratio of binder A to binder B in the first composite binder is higher than the mass ratio of binder A to binder B in the second composite binder.

The application discloses a mine filling and plugging material quick-setting additive and a preparation method thereof. The water-retaining agent in the quick-setting additive is a composite water-retaining system formed by hydroxypropyl methyl cellulose and modified starch. The hydroxypropyl methyl cellulose physically wraps free water in the slurry; the modified starch adsorbs water molecules through hydrogen bonding, and the double mechanism significantly reduces the bleeding rate; the coagulation accelerator adopts a spray drying wrapping technology, and a core-shell structure composite particle is constructed, in which aluminum lithium sulfate is used as a 'quick-release core', and active calcium silicate gel slurry obtained by the reaction of nano calcium silicate and sodium silicate is used as a'slow-release wrapping layer', so that the coagulation accelerator can promote coagulation, prevent sodium silicate from being consumed too early, and realize sustained coagulation. The early strength agent adopts a gel-gelling method, so that the early strength agent can provide persistent early strength excitation and solve the problem of weak late strength growth. The interface reinforcing agent can make the interface transition zone structure more strong and tough, and improve the integrity and damage resistance after the slurry coagulation and hardening.

The application discloses recombinant collagen type III, a hydrogel, a preparation method and application, and belongs to the technical field of medical materials. The protein has an amino acid sequence as shown in SEQ ID No. 2 or 3, and has excellent biocompatibility and cell activity. The hydrogel based on the protein is formed by mixing a solution of the protein with a solution containing oxidized sodium alginate and hydroxypropyl methyl cellulose, adjusting pH, sequentially introducing an EDC / NHS crosslinking system and calcium ions, and standing. The process constructs a stable double-network structure of EDC / NHS catalyzed covalent crosslinking network and OSA-Ca 2+ ion crosslinking network synergistic effect. The obtained hydrogel has high mechanical strength, excellent toughness, long-lasting wet tissue adhesion and suitable swelling performance, can effectively adapt to the complex stress changes of dynamic wounds, and provides an active matrix for cells, and promotes tissue repair.

This invention belongs to the field of biopharmaceutical technology and discloses a tranexamic acid sustained-release composition, its preparation process, and its application. By weight, the composition comprises 100-120 parts tranexamic acid, 14-18 parts sustained-release material, 5-8 parts magnesium stearate, 2-5 parts colloidal silica, and 3-5 parts polyvinyl alcohol. The sustained-release material is selected from a combination of hydroxypropyl cellulose and ethyl cellulose, or a combination of hydroxypropyl methyl cellulose and microcrystalline cellulose, or a combination of sodium carboxymethyl cellulose and hydrogenated vegetable oil. This invention utilizes the synergistic effect of the sustained-release material and the synergistic effect between the sustained-release material and polyvinyl alcohol to maintain zero-order or first-order release of the drug, achieving a steady-state blood drug concentration and prolonging the duration of action, thereby achieving a good sustained-release effect.

This invention discloses an environmentally friendly shale brick based on multi-source waste and its preparation method. Using shale as the matrix, it is compounded with fine powder from construction waste, sludge incineration ash, waste ceramic powder, and rice husk charcoal. Simultaneously, calcined kaolin, red mud, silane coupling agent, calcium stearate, sodium carboxymethyl cellulose, polyvinyl alcohol, and sodium lignosulfonate are introduced to form a composite system of "inorganic solid waste + mineral reinforcement + organic modification + low-temperature segmented sintering." The organic components play a role in plasticizing, binding, water retention, and crack reduction during the green body stage. They completely pyrolyze at high temperatures without residue and do not affect mineral phase formation. In synergy with the inorganic system, the green body achieves crack-free construction, extremely low shrinkage, and significantly improved strength.

This invention relates to the field of antibacterial composite sphere preparation, and particularly to a graphene antibacterial composite sphere and its preparation method, comprising: high-speed dispersion of modified silver-loaded zeolite, graphene oxide, polyvinylpyrrolidone-block-polyacrylic acid, hydroxypropyl methylcellulose, and ascorbic acid; calculating dispersion state indices based on real-time monitored resistivity and particle size; dynamically adjusting the rotation speed to suppress shear damage; normalizing the dispersion state indices to parameter adjustment parameters of 1-10 to determine the screw speed and temperature setpoint of the twin-screw extruder; and real-time monitoring of 1710 cm⁻¹ during the extrusion process. ‑1 The drift of characteristic absorption peaks is dynamically compensated for by interfacial thermal degradation, and finally injection molding is performed. This invention achieves fine and stable dispersion and composite of graphene and silver-loaded zeolite in a polyethylene matrix through multi-level intelligent control, solving the problems of easy agglomeration of functional phases, easy degradation during processing, and poor batch consistency caused by rough process control in the prior art.

The present application relates to a kind of preparation method of plant composition with hair-nourishing effect, belong to hair-washing composition field, including the following mass parts raw materials: 30-40 parts modified pickering emulsion, 15-25 parts compound surfactant system, 15-30 parts goat milk, 1-3 parts avocado seed extract, 5-7 parts hydroxypropyl methyl cellulose and 80-100 parts deionized water;White hedyarium alcohol, carvacol, fermented ring grass extract, ganoderma extract, ginger extract, cypress leaf extract are loaded using modified starch, so that plant extract can better play a role in system, promote the absorption of scalp to plant extract;By adding goat milk and part of plant extract synergistically, while using stabilizer, increase the viscosity and stability of system, inhibit the denaturation of protein in goat milk and the stability of plant extract component.

This invention relates to an air-to-water system and its absorbent gel. The preparation method of the absorbent gel includes: dispersing carboxymethyl cellulose in deionized water until a transparent solution is formed; adding copper oxide nanoparticles to the transparent solution and ultrasonically dispersing them uniformly to obtain a CuO / CMC pretreatment solution; adding hydroxypropyl methylcellulose to the CuO / CMC pretreatment solution and stirring until fully swollen to form a precursor solution; adding lithium chloride to the precursor solution and stirring until fully foamed to obtain a foam gel; and finally drying the foam gel to obtain the absorbent gel. The absorbent gel of this invention has low preparation cost, can rapidly and efficiently absorb / desorb moisture, and can be assembled into an independent passive water production system, thus adapting to a wider range of applications in arid regions.

The present invention provides a solid dispersion comprising lurasidone or a pharmaceutically acceptable salt thereof and a carrier. The carrier material includes polyvinyl acetate phthalate (PVAP), polyvinyl alcohol (PVA), cellulose acetate phthalate (CAP), mesoporous silica, hydroxypropyl methylcellulose (HPMC), polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol graft copolymer, acrylic resin, hydroxypropyl cellulose (HPC), povidone, copovidone, ethylcellulose, polyoxyethylene glycol, hypromellose acetate succinate (HPMCAS), hypromellose phthalate (HPMCP), or a combination thereof.

The application discloses a kind of iron oxide red dyeing ceramic grinding wheel and its preparation process, wherein, iron oxide red dyeing ceramic grinding wheel includes the following components according to weight parts: abrasive 90-120 parts, ceramic binder 10-28 parts, iron oxide red 0.2-1 part, temporary adhesive 0.5~2 parts, and wetting agent 2~5 parts, the temporary adhesive is hydroxypropyl methyl cellulose, the wetting agent is polyquaternary ammonium salt aqueous solution, and the concentration of polyquaternary ammonium salt aqueous solution is 0.5%~5%.The application prevents the aggregation and sedimentation of iron oxide red particles by the electrostatic effect and physical barrier effect of polyquaternary ammonium salt, so that the stability of the whole mixed liquid system can be maintained for a long time, which is beneficial to the uniform dispersion of iron oxide red particles;hydroxypropyl methyl cellulose has strong water retention, which can avoid cracking and other problems caused by excessive temperature difference and rapid water evaporation during the heating and drying process of grinding wheel blank.

The application provides a solid fire-retardant buoyancy material with oil product flocculation and a preparation method and application thereof. The preparation method comprises the following steps: mixing hydroxymethyl cellulose, a binder, ammonium polyphosphate and water to obtain a suspension, mixing the suspension with hollow glass microbeads to obtain hollow glass microbeads coated with ammonium polyphosphate-hydroxymethyl cellulose, mixing the hollow glass microbeads coated with ammonium polyphosphate-hydroxymethyl cellulose with epoxy resin, a diluent, a curing agent and an accelerator and curing and forming to obtain hollow glass microbeads coated with epoxy resin-ammonium polyphosphate-hydroxymethyl cellulose, and reacting the hollow glass microbeads coated with epoxy resin-ammonium polyphosphate-hydroxymethyl cellulose with acrylamide monomers and an initiator to obtain the solid fire-retardant buoyancy material. The solid fire-retardant buoyancy material is prepared by the preparation method. The application also provides application of the solid fire-retardant buoyancy material in inhibiting oil product volatilization. The solid fire-retardant buoyancy material has the advantages of strong oil product volatilization inhibition capacity, superior fire-retardant performance, high mechanical strength, non-toxicity and environmental protection.

The application provides a kind of tissue repair filler based on adipose-derived stem cells and its preparation method and application, belong to tissue repair technical field. Autologous adipose tissue is mixed with cerium dioxide nanozyme armed adipose-derived stem cells to obtain a mixed stem cell / fat system. Hyaluronic acid microspheres loaded with zinc ions and magnesium ions are added to a sodium carboxymethyl cellulose hydrogel matrix, and the mixed stem cell / fat system is added and mixed uniformly. After standing and defoaming, a tissue repair filler based on adipose-derived stem cells is prepared. The filler has good anti-inflammatory, antioxidant and microenvironment improvement effects, low rejection reaction, good autologous adaptability, high safety, and suitable mechanical properties.

This invention discloses an oil-resistant, high-temperature, fast-dissolving, edible packaging film and its preparation method, belonging to the field of biodegradable polymer materials technology. By mass percentage, the raw materials for preparing this oil-resistant, high-temperature, fast-dissolving, edible packaging film include 0.5-5.0% hydroxypropyl methylcellulose, 0.1-1.5% sorbitol, 1.0-9.0% gelling agent, 0.05-1.0% coagulant, and the balance being water. The gelling agent comprises carrageenan, low-acyl gellan gum, and xanthan gum in a mass ratio of 1:0.1-0.3:0.01-0.05, with the mass ratio of hydroxypropyl methylcellulose to xanthan gum being 1:0.01-0.1. This invention rationally combines three gelling components with different properties, along with hydroxypropyl methylcellulose and sorbitol, to achieve good mechanical properties and oxygen barrier properties, while also achieving high-temperature fast dissolution and oil resistance.

The present application relates to the technical field of hydrogen absorption, in particular to a three-layer coated hydrogen absorption oxygen and water blocking microcapsule, a preparation method and application thereof, wherein hydrogen absorption powder is pressed into tablets and then coated with three layers, and the coating solution used in the coating contains hydroxypropyl methyl cellulose, polystyrene and / or reduced graphene oxide. By adding PS and rGO as coating materials and selecting a suitable thickness for coating, the hydrogen absorption microcapsule has the characteristics of hydrogen absorption, oxygen blocking and water blocking.

This invention belongs to the field of disinfectant technology, specifically relating to a TCCA instant effervescent tablet and its preparation method. A TCCA instant effervescent tablet, by weight percentage, is prepared from the following components: 35-50% trichloroisocyanuric acid, 8-15% urea, 10-18% anhydrous citric acid, 8-14% sodium bicarbonate, 3-8% modified starch disintegrant, 2-6% disodium hydrogen phosphate, 1-4% sodium dodecyl sulfate, 0.5-2% disodium ethylenediaminetetraacetate, 1-3% hydroxypropyl methylcellulose, 0.5-1.5% magnesium stearate, with talc to bring the total to 100%. This invention addresses the problems of existing disintegrants by preparing a modified starch disintegrant through grafting and cross-linking modifications. Experimental results show that effervescent tablets using the modified starch disintegrant of this invention have a disintegration time of only 65-112s in pure water, and the increase in disintegration time in hard water is small. After accelerated testing at 54℃ / 14d, the effective chlorine reduction rate is only 2.2-5.5%, and the increase in disintegration time is small. This indicates that the grafted and cross-linked dual-modified structure has good stability and can maintain excellent disintegration performance after heat storage.

This invention relates to the field of chemical separation materials technology, and specifically to a nitrogen-phosphorus co-doped starch-derived carbon and W 18 O 49 The method for preparing carboxylated polypyrrole integrated porous electrodes includes: synthesizing nano-W using a solvothermal method. 18 O 49 Using starch as the carbon source, sodium carboxymethyl cellulose as the pore-forming agent, and polyethyleneimine and phytic acid as nitrogen and phosphorus dopants respectively, nano-W 18 O 49 By mixing and molding, followed by freeze-drying and high-temperature carbonization, nitrogen-phosphorus co-doped starch-derived carbon and W were obtained. 18 O 49 A self-supporting porous electrode is obtained by electrochemical polymerization using a three-electrode system to deposit a carboxylated polypyrrole film on the electrode surface. This electrode features a three-dimensional porous structure, is binder-free, and integrates high specific capacitance, good conductivity, and ion-selective permeability. It is used in membrane capacitive deionization technology to treat uranium-containing wastewater, exhibiting high uranium removal rate, large electroadsorption capacity, short equilibrium time, and high membrane permeation flux, demonstrating broad application prospects.

The present application relates to the technical field of thermal insulation homogeneous bricks, and particularly discloses a cement thermal insulation homogeneous brick, which comprises cement, shale mineral powder, modified vitrified microbeads, lime, polymer glue powder, perlite, reinforced fiber, EPS polystyrene particles, deionized water, calcium carbonate, calcium silicate, magnesium borate, straw powder, AR glass fiber, carboxymethyl cellulose, water reducing agent, foaming agent, foaming regulator, catalyst, crosslinking agent, foam stabilizer and glyoxal, and the components are respectively 300-400 parts of cement, 42-45 parts of shale mineral powder, 33-38 parts of modified vitrified microbeads, 15-25 parts of lime, 2-5 parts of polymer glue powder, 15-18 parts of perlite, 8-12 parts of reinforced fiber, 10-15 parts of EPS polystyrene particles, 200-300 parts of deionized water, 2-3 parts of calcium carbonate and 2-3 parts of calcium silicate in terms of weight ratio. The present application can effectively solve the problems of low structural strength, poor fire resistance and thermal insulation performance and failure to meet the use requirements of the existing cement thermal insulation homogeneous bricks.

The application discloses light thermal-insulation composite mortar and a production equipment thereof and relates to the technical field of composite mortar, which comprises cement 35-40 parts, converter slag granular material 8-12 parts, reinforcing material 12-18 parts, composite thermal-insulation aggregate 16-22 parts, resin type redispersible emulsion powder 0.25-0.35 parts, cold water type polyvinyl alcohol 0.6-0.9 parts, hydroxypropyl methyl cellulose ether 0.1-0.2 parts, air entraining agent 0.01-0.03 parts, water glass 0.06-0.1 parts, inorganic retarder 0.005-0.01 parts, polystyrene granules 8-13 parts, vitrified microbeads 30-50 parts, redispersible emulsion powder 1-2 parts, water-retaining agent 0.2-0.6 parts. By incorporating the water-retaining agent, the volume of the mortar can be prevented from shrinking with the evaporation of water. In the shrinking process, if the cement-containing material has no strength or very low strength, the shrinkage stress is greater than the tensile strength of the material, and the shrinkage amount will be manifested as the problem of relatively concentrated large cracks.

The present invention aims to provide an intraoral adhesive film that combines adhesive properties and slow dissolution properties in a well-balanced manner. [Solution] The present invention provides an intraoral adhesive film containing (A) ιcarrageenan and (B) κcarrageenan. Preferably the film further contains (C) a water-soluble polymer such as tamarind gum, gum arabic, karaya gum, xanthan gum, gellan gum, tragacanth gum, guar gum, tara gum, locust bean gum, pullulan, gelatin, casein, pectin, agar, glucomannan, galactomannan, starch, carboxymethyl starch, dextrin, alginic acid, alginic acid ester, chitin, chitosan, carboxymethylcellulose, λcarrageenan, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, methylcellulose, and ethylcellulose.