73results about "Dextran adhesives" patented technology

The invention discloses a wood adhesive, in the technical scheme, konjac glucomannan and chitosan which serve as main raw materials, glacial acetic acid which serves as catalyst, polyvinyl alcohol which serves as modifier and pure water which serves as solvent are mixed and react at 25 to 90DEG C to prepare the wood adhesive. The invention has the advantages of wide sources of the three raw materials, high bonding strength, lower cost and no pollution. The natural polymer-based wood adhesive prepared by the invention is applied to the bonding of poplar veneer, the average value of the dry bonding strength is 4.01MPa, the average value of the wet bonding strength is 2.88MPa, and the dry and the wet strength reaches the values of national standard requirements.

The invention provides a medical adhesive and a medical hydrogel resin, which can fully meet the general properties required by the medical adhesive or resin, and can quickly disintegrate after a set disintegration time. disintegration, and can adjust and control the setting time relatively freely. An aqueous solution of hydroformylated α-glucan having a weight-average molecular weight of 1,000 to 200,000 is used as the first solution, and an aqueous solution of an amino group-containing polymer formed by chains containing amino units is used as the second solution. The weight average molecular weight of the amino group-containing polymer is 1,000 to 20,000, and the pH when the first liquid and the second liquid are mixed is 5.0 to 8.0.

The invention discloses an adhesive for plywood and relates to the technical field of plywood preparation. The adhesive is prepared from the following components: konjaku flour, vanillic aldehyde grafted chitosan, acrylate crosslinked polyvinyl alcohol, glacial acetic acid, filler and water. The adhesive for plywood provided by the invention has high bonding strength, excellent ageing resistance and water resistance and capability of effectively prolonging the service life.

The invention relates to a preparation method of a natural polymer binder capable of realizing photopolymerization. In the invention, the polarity of an urethano structure is applied, the urethano structure has very strong polarity, an introduced acrylate group has the advantages of photopolymerization as well as high speed, environment protection, and the like of the photopolymerization, and a natural polymer can be degraded in a human body. Therefore, the urethano structure and the acrylate structure are combined in the natural polymer to form the novel natural polymer binder capable of realizing photopolymerization, and the novel natural polymer binder can be applied to various surfaces.

The invention provides a bonding agent for starch-based corrugated paper and a preparation method thereof. The preparation method comprises the following steps: (1) preparing 8 to 12 percent sodium hydroxide and a 20 to 30 percent hydrogen peroxide solution, and performing ultrasonic oscillation to mix uniformly; (2) placing potato starch into a clean and dry reaction vessel, adding water, and stirring for 10 to 15 minutes at a speed of 80 to 160 revolution/minute until uniform mixing; (3) adding ferrous sulfate and the hydrogen peroxide solution, stirring for reacting for 10 to 20 minutes, adding the sodium hydroxide solution while stirring, and stirring and pasting until the shape of the solution does not change any more; (4) adding sodium borate and tributyl phosphate, and stirring continually for 20 to 30 minutes; (5) adding modified urea resin, ethylis oleas, ammonium oxide, modified konjac glucomannan, modified carrageenan and a preservative, and uniformly mixing to obtain the bonding agent. The bonding agent for the starch-based corrugated paper has very high viscosity and water resistance.

The invention relates to a non-toxic adhesive and a preparation method thereof. For the non-toxic adhesive, the formula of raw materials consists of a main agent and additives, wherein the main agent comprises following components: konjac powder, chitosan and polyvinyl alcohol; and the additives comprise sodium hydroxide, borax, phosphoric acid, nano-kaolin, urea and a degassing agent. The preparation method of the non-toxic adhesive comprises following steps: (1) firstly, dissolving polyvinyl alcohol in water, adding urea and borax, and finally adding chitosan and stirring until chitosan is completely dissolved to obtain a component A; (2) adding konjac powder to a sodium hydroxide solution and stirring until konjac powder is completely dissolved to obtain a component B; and (3) mixing and uniformly stirring the component A, the component B, the degassing agent and nano-kaolin to obtain the non-toxic adhesive. The non-toxic adhesive is environment-friendly and safe, high in bonding strength and good in water resistance; and the preparation method of the non-toxic adhesive is also simple and easy to operate.

The invention relates to an anti-eyestrain mobile phone sticker and a preparation method thereof. The preparation method for the anti-eyestrain mobile phone sticker comprises the following steps of: preparing a sol sticker solution, molding a mobile phone sticker, and drying the mobile phone sticker. The product is the anti-eyestrain mobile phone sticker which is prepared from konjac glucomannan with an excellent film-forming property, and compounds such as curdlan, agar and the like, and the manufacturing process is simple and low in cost; the anti-eyestrain mobile phone sticker has the characteristics of smooth surface, high light transmittance and high toughness, and can also resist mechanical scratches; and meanwhile, the invention also has the advantage that the anti-eyestrain mobilephone sticker is degradable, and the anti-eyestrain mobile phone sticker is an environment-friendly product.

The invention discloses cold sol powder of inner wall putty. The cold sol powder comprises the following components in percentage by weight: 80 to 85 percent of plant modified polymer gel powder, 8 to 12 percent of re-dispersible latex powder and 5 to 10 percent of carboxymethyl corn powder. The cold sol powder of the inner wall putty mainly substitutes polyvinyl alcohol glue solution and various additives, and plays a role of adhesive, additive and the like; and field blended and water blended products are prepared according to the sequential adding order of calcium carbonate and water. The cold sol powder of the inner wall putty can be prepared into a dry powder putty adhesive product, and only needs to be mixed with the water and the calcium carbonate in field construction; and the cold sol powder also can be used as a production raw material of a putty powder factory and directly used without adding other auxiliary agents. Therefore, the cold sol powder of the inner wall putty has the characteristics of simple process, no formaldehyde pollution, low cost, good construction performance and high bonding strength, and is easy to blend.

The invention discloses a high-thermal-conductivity, conductive and environment-friendly adhesive and a preparation method thereof. The adhesive contains the following components: modified epoxy resin, konjak gulcomannan, chitosan, a heat-conducting filling, a conductive filling, a diluent, a curing agent, a curing accelerator and a rheology control agent. By virtue of reasonable raw material selection and formula design, particularly the selection of the heat-conducting filling and the conductive filling, the heat-conducting filling and a conductive multi-walled carbon nanotube are processedby through chemical silvering, the heat-conducting filling and the conductive filling are distributed to partial matrix resin and are mixed to form a mixed component, and the mixed component is mixedwith other matrix components, so that the consistency among the nano-scale heat-conducting filling, the conductive filling and the matrix resin is effectively improved, the dispersion effect is improved, and therefore, the functionality of the adhesive is furthest exerted; and by mixing epoxy resin, konjak gulcomannan and chitosan in use, the performance of the matrix is broadened, and meanwhile,the environmental protection property is improved.

An adhesive for cigar cigarettes is a mixture of konjac refined powder and water according to weight ratio of 1:50 to 1:150, and further contains the following components: by mass percent of the mixture, less than or equal to 0.05% of sorbic acid or potassium sorbate, less than or equal to 0.04% citric acid or potassium citrate, less than or equal to 0.01% of nipagin ester, less than or equal to 0.01% of sodium natamycin and less than or equal to 0.06^ of nisin. The konjac refined powder is prepared through a conventional processing method, and the konjac refined powder is purified, eluted, smashed through supersonic speed and the like to obtain the adhesive for the cigar cigarettes. The adhesive solves the problems of print, color, abnormal taste and the like existing in the existing glue for the cigar cigarettes, coordinates smoke, reduces mildew risks in a storing process and improves appearance and inner quality of the cigar cigarettes. The adhesive for the cigar cigarettes and the preparation method of the adhesive are simple in technology processes and low in cost.

The invention discloses an environment-friendly high-temperature-resistant explosion-proof membrane which sequentially comprises a scratch-resistant wear-resistant layer, a safety explosion-proof layer, an ultraviolet absorption layer, a PET (polyethylene terephthalate) carrier layer, a pressure-sensitive adhesive layer and a release film layer. The scratch-resistant wear-resistant layer is prepared from the following raw materials in parts by weight: 30-50 parts of acrylic resin emulsion, 25-36 parts of isobutyl etherified amino resin emulsion, 2-6 parts of wood fiber, 0.5-1.3 parts of succinic anhydride, 1-3 parts of konjaku flour nanocrystal, 2-4 parts of vermiculite powder, 0.1-0.5 part of dispersing agent and 10-15 parts of deionized water. The safety explosion-proof layer is prepared from the following raw materials in parts by weight: 20-40 parts of fluorocarbon-modified polyacrylic resin emulsion, 5-11 parts of polytetrafluoroethylene resin, 6-10 parts of acrylic-acid-modified organic silicon resin, 2-3 parts of nano titanium nitride, 3-8 parts of sorbitan monocarboxylate, 1-4 parts of hollow silicon dioxide nanoparticle, 0.8-1 part ofcrosslinking agent, 3-5 parts of curing agent and 8-12 parts of deionized water. The explosion-proof membrane has the advantages of favorable scratch resistance, favorable wear resistance, excellent ultraviolet resistance, favorable explosion resistance, high interlaminar binding force, high safety, high transparency and high temperature resistance.

The invention discloses an injectable biological adhesive, a preparation method and application thereof, and belongs to the technical field of high polymer materials and biological materials. According to the preparation method, saccharide macromolecules, namely glucan and chitosan oligosaccharide, with good biocompatibility are selected as matrixes and mixed and dispersed in an aqueous solution with dopamine and an oxidative cross-linking agent, and rapid gelatinization is performed to obtain the multi-cross-linked biological adhesive. The biological adhesive material obtained by the invention has the advantages of injectability, convenience in practical application and operation, capability of being applied to skin tissues, capability of being injected to the required amount according tothe required adhesion size and the like, high mechanical strength, no cytotoxicity and excellent tissue adhesion performance, can be applied to adhesion of various materials such as animal epidermis,in-vivo tissues and organs, glass, metals and oxides thereof, sealants, plastics and the like in clinical operations, and has wide application prospects in the fields of tissue adhesion and repair, hemostasis, packaging, sealing and the like in clinical medicine.

The invention discloses an environment-friendly high-strength UV adhesive which comprises the following raw materials in parts by weight: 30-45 parts of epoxy acrylate, 30-45 parts of modified polyurethane acrylate, 5-10 parts of honey, 7-12 parts of a viscosity enhancer, 22-28 parts of a photoinitiator, 18-26 parts of an anti-aging agent, 6-10 parts of polyvinyl alcohol, 4-8 parts of dibutyl phthalate, 2-5 parts of silicon micro powder, 3-5 parts of sodium pyrophosphate, 2-4 parts of a spice and 12-18 parts of xanthan gum. The invention also discloses a preparation method of the environment-friendly high-strength UV adhesive. The environment-friendly high-strength UV adhesive has good adhesive force to the surface of a silver-plated material, the viscosity of the environment-friendly high-strength UV adhesive is high, the thixotropy is good, the aging resistance is good, the environment-friendly high-strength UV adhesive is environment-friendly and healthy, the development process issimple, the cost is low, the environment-friendly high-strength UV adhesive is not easy to fall off, and the service life is long.

The present invention relates in general terms to a formaldehyde-free aqueous binding composition (binder) comprising ammonium sulfamate, and to a fibrous mineral material obtained by polymerization of said composition. Advantageously, the present composition makes it possible to obtain rapid polymerization times during the formation of fibrous mineral material, while nonetheless ensuring the thermal and mechanical stability thereof.

The invention relates to a konjac glucomannan sports patch and a preparation method thereof. The preparation method of the konjac glucomannan sports patch includes the steps that konjac glucomannan glue liquid is prepared and filtered, gluing elastic cotton cloth is prepared, and the sports patch is assembled. With konjac glucomannan as a main raw material of the konjac glucomannan sports patch and by mainly utilizing two characteristics including the antibacterial property and the sweat absorption property, the sports patch is endowed with unique functions, konjac glucomannan and used auxiliary materials are basically biodegradable, and the konjac glucomannan sports patch accords with the current environmental protection theme of the times. The konjac glucomannan sports patch is superiorto other sports patches on the market in terms of the sweat absorption property, the antibacterial property, environmental protection, raw material prices and other indexes, konjac glucomannan is lowin cost and simple in processing technology, and compared with sports patches of the same type, the konjac glucomannan sports patch can become a new generation of sports patches with market competitiveness.

The invention discloses a method for preparing a corn inner skin natural adhesive, belonging to the technical field of adhesives. The method comprises the following step of: with corn inner skin as a raw material, carrying out ultramicro crushing on the corn inner skin to more than 300 meshes, soaking the ultramicro crushed corn inner skin in alkali liquid with the concentration of 10-20%, stirring for 6-24h to have quaternization, carrying out one or more chemical modification reactions of oxidation, carboxy methylation, acetylation or phosphate esterification and cationic etherification on the raw material with chemical reaction activity, and controlling substitution depth of the reactions to prepare natural adhesive products with different indexes and performances, which can be gelatinized in hot water and dissolved in cold water. The method for preparing the corn inner skin natural adhesive, disclosed by the invention, has the advantages that the prepared adhesive has good adhesiveness and strong filming capability, the slurry film has excellent ductility and smoothness, and the elasticity and the mechanical strength of the starch slurry film can be remarkably improved when the prepared adhesive and the modified starch are used together; the source of the raw material is wide, the raw material is low in cost, the additional value of the starch processing is further increased, and economic benefits of enterprises are increased.

The invention belongs to the technical field of adhesive, and discloses an organic adhesive used in waste ash processing, and preparation equipment thereof. According to preparation process, a raw material is introduced into a box body through an injection pipe, and is conveyed into a rotating shaft through the injection pipe, under the driving effect of a motor in a motor box, the rotating shaft is driven to rotate, the raw material in the rotating shaft is discharged under centrifugal force effect, under cutting effect, the raw material introduced into the box body and a liquid in the box body are mixed fully, the mixing degree of the raw material in the box body is increased, a mixed solution in the box body is subjected to full mixing in the internal part of the box body under the stirring effect of seepage holes, the mixed solution in the box body is separated using separating holes, and box body mixing effect is enhanced, a prepared organic adhesive is conveyed into an adhesion container, waste ash is introduced into the adhesion container, a supporting column is arranged in a supporting groove through clamping, the supporting effect of the supporting column is adopted to ensure the operation stability of the adhesion container, balls are generated preferably, and it is convenient for waste ash recycling.

The invention discloses a composite modified environment-friendly metal corrugated pipe adhesive and a preparation method of the composite modified environment-friendly metal corrugated pipe adhesive. The composite modified environment-friendly metal corrugated pipe adhesive is prepared from, by weight, 16-35 parts of polyvinyl alcohol, 13-28 parts of corn starch, 13-26 parts of konjaku flour, 12-27 parts of chitosan, 11-19 parts of konjac gulcomannan, 11-22 parts of sodium borate, 3-11 parts of aluminum oxide, 8-19 parts of sodium hydroxide, 6-17 parts of magnesium sulfate and 6-18 parts of ferric sulfate. The composite modified environment-friendly metal corrugated pipe adhesive is long in adhesion time and high in adhesion strength, and has good waterproof performance and good corrosion resistance.

The invention discloses an application method of a chitosan/glucan-containing moss sporophyte suspension to bare land greening. The application method comprises the following steps of collecting mossspores, and adding a hydrogen peroxide solution into the spores to obtain a mixed solution of disinfected spores and hydrogen peroxide; inoculating the mixed solution of the disinfected spores and thehydrogen peroxide into a spore germination induction culture medium for spore germination induction culture, adding into a solid subculture multiplication culture medium for subculture multiplicationculture after culture, mixing with a liquid culture medium after culture, and carrying out shake culture to obtain a dark green suspension; adding chitosan, glucan, ferric ammonium citrate, phenoxyacetic acid, zinc sulfate and potassium nitrate into the dark green suspension to obtain the moss sporophyte suspension; uniformly smearing a moss adhesive on bare land, then uniformly spraying the mosssporophyte suspension on the surface of the moss adhesive, using a sunshade net for covering, and carrying out spray irrigation in time. The moss sporophyte suspension is used for bare land greening,and the greening covering degree is high after growth.

The invention belongs to the technical field of liquid crystal display films and particularly relates to a production method of an eye-protecting and radiation-resisting display protection film. The method comprises the following production steps: (1) processing tempered glass; (2) coating a radiation resisting layer; (3) preparing an adhesion film glue solution; (4) preparing an eye-protecting adhesion film; and (5) gluing the tempered film with the adhesion film. The liquid crystal display protection film is divided into a tempered glass protection layer and an eye-protecting adhesion film layer which are adhered to each other through liquid silicone glue; the radiation resisting layer is coated on the lower surface of the tempered glass layer. The protection film produced by the production method of the eye-protecting and radiation-resisting display protection film has excellent protection effect and good eye-protecting effect and is also capable of resisting harm of part of electromagnetic radiation to the users.

The invention discloses a preparation method of a bonding agent for a paper tube. The preparation method comprises the following steps of 1, placing deionized water, polyvinyl alcohol and the like in a reaction kettle, performing stirring and temperature rise, adding sodium dodecyl benzene sulfonate and the like, and performing stirring, 2, adding alkylphenol polyvinylether carboxymethyl sodium and the like, and continuing to perform stirring, 3, adding a konjak powder solution and the like, and continuing to perform stirring, 4, adding compound starch and the like, and performing stirring and temperature rise, and 5, adding an enzymatic hydrolysate and the like, and performing stirring and filtering, wherein a preparation method of the konjak powder solution comprises the concrete steps of uniformly mixing konjak powder, cetyl trimethyl ammonium bromide and the like, adding a chloroauric acid solution, performing stirring until a brilliant yellow color becomes clarified, adding a concentrated HCl solution, performing stirring and standing, adding a chitosan solution, performing mixing, and performing ultrasonic treatment and centrifugation to take a supernate. The prepared bonding agent has the benefits that the bonding agent is short in paper fiber breaking time, high in bonding strength, good in flowability and good in storage stability.

The invention discloses a bi-component starch-based adhesive for a wood and belongs to the technical field of deep processing of woods. The bi-component starch-based adhesive for the wood is formed byseparately packaging a component A and a component B, wherein the component A is prepared by adding 40-50 parts of starch paste, 20-30 parts of activated chitosan, 10-20 parts of humic acid, 10-20 parts of modified additive and 10-20 parts of nanometer silica into a 3# beaker according to part weight, and carrying out stirring and mixing at the rotating speed of 300-500r/min for 40-60min; and thecomponent B is prepared by adding 10-20 parts of isocyanate, 8-10 parts of konjac glucomannan, 8-10 parts of silane coupling agent and 3-5 parts of crosslinking agent into a 4# beaker according to part weight, and carrying out stirring and mixing at the rotating speed of 300-500r/min for 40-60min. By using the bi-component starch-based adhesive for the wood, provided by the invention, a system isenabled to have excellent water resistance and mechanical properties.

The invention discloses an environment-friendly adhesive and a preparation method thereof, and belongs to the technical field of adhesives. According to the adhesive prepared by the preparation methoddisclosed by the invention, liquidity of the adhesive in a using process is improved; through nucleophilic addition of polyvinyl alcohol and furfural, the bonding strength of the obtained substancesis improved, and a bonding network structure is formed; free aldehyde groups are reduced, and the aldehyde groups are bound to the network structure, so that the aldehyde groups are not diffused easily to harm a human body. An added modified active agent changes adhesion performance of the adhesive, and a formed adhesive film has relatively good tear resistance and impact resistance, so that usability of the adhesive is enhanced. According to a prepared cross-linking additive, active substances are improved and stored in the adhesive network structure, so that harmful substances are preventedfrom escaping, and overall performance of the adhesive is improved. Elasticity of the adhesive is improved by xanthan gum, carrageenan and the like, so that shrinkage and cracking are reduced, and good film-forming strength is kept. The adhesive disclosed by the invention solves the problems of large amount of free formaldehyde and low bonding strength in existing adhesives.

The invention belongs to the technical field of wood adhesives, and particularly relates to an enzyme-modified biomass wood adhesive and a preparation method thereof. The preparation method comprisesthe following steps: dissolving vegetable proteins in water, adjusting the pH value of the obtained solution to 7-11 by using alkaline hydroxide, and stirring at 50 DEG C for 2 h to prepare a vegetable protein solution; adding polysaccharides, performing ultrasonic treatment to uniformly disperse the polysaccharides in the vegetable protein solution, adding glucosamine and protease, and stirring overnight at 37 DEG C; and performing high-pressure homogenization to obtain the wood adhesive. The formula of the soybean-based wood adhesive only contains proteins, polysaccharides, low-concentrationweak base and glucosamine, does not contain formaldehyde, and is green and pollution-free; and protease modification and glucosamine modification technologies enable the soybean protein and the polysaccharides to form a uniform, compatible and stable network structure, so that the bonding strength and the water resistance of the adhesive are improved.