100results about "Starch adhesives" patented technology

The invention belongs to the technical field of adhesives, and particularly relates to a preparation method of a polysaccharide-based reversible bonding adhesive for constructing a dynamic covalent bond network. The preparation method comprises the following steps: by taking lipoic acid and sodium alginate as reactants and ferric chloride as a cross-linking agent, carrying out cross-linking reaction under a stirring condition to obtain a lipoic acid adhesive, namely the polysaccharide-based reversible bonding adhesive. According to the invention, renewable biomass resources such as sodium alginate, hyaluronic acid, chitosan and the like are used as main raw materials, so that the adhesive is expected to replace a traditional synthetic adhesive depending on a petroleum base, accords with a sustainable development strategy, contributes to reducing consumption of fossil resources, avoids release of toxic substances such as formaldehyde and the like in the synthesis and use processes, and has a good application prospect. And the method is more environment-friendly. The bio-based polysaccharide raw material has good biocompatibility and degradability, and an ideal base material is provided for developing a green and safe biomedical adhesive.

The invention belongs to the technical field of biomass materials and environment-friendly adhesives, and relates to a biomass adhesive, in particular to a preparation method of a biomass environment-friendly adhesive based on longan shells, which comprises the following steps: firstly, cleaning, drying, crushing and screening the longan shells for pretreatment, and then carrying out alkalization and acetylation chemical modification to obtain the biomass environment-friendly adhesive based on the longan shells. And finally, compounding with gelatinized starch, a chitosan acetic acid solution and citric acid, and adjusting the viscosity to obtain the adhesive. The waste longan shells are used as raw materials, agricultural waste recycling is achieved, the product is free of formaldehyde release and biodegradable, and the viscosity of the prepared adhesive is 1000-2000 mPa.s at the temperature of 25 DEG C and is measured through a rotary viscometer; the wood-wood bonding strength is larger than or equal to 2.5 MPa, the 24-hour water absorption rate is smaller than or equal to 25%, the problems that a traditional biomass adhesive is short in performance and low in cost, special equipment is not needed for preparation are solved, the adhesive is suitable for the industrial fields of artificial board manufacturing, furniture manufacturing and the like, and environment-friendly transformation of the adhesive industry is promoted.

The invention discloses a formaldehyde-free composite board for a cabinet and a preparation method of the formaldehyde-free composite board, and relates to the technical field of artificial board manufacturing. The preparation method of the formaldehyde-free composite board for the cabinet comprises the following steps: mixing high amylose with a choline chloride / urea deep eutectic solution, stirring, adding concentrated hydrochloric acid for reaction, adjusting the pH value, and adding ammonium persulfate to obtain pretreated oxidized starch; methacrylic acid dehydrated glyceride is added into the pretreated oxidized starch for a grafting reaction, then modified polyvinyl alcohol is added for blending, sodium metaphosphate is added for crosslinking, finally, heating and curing are conducted, modified titanium dioxide nanoparticles are added, and the formaldehyde-free starch adhesive is obtained. The wood shavings and the formaldehyde-free starch adhesive are mixed, and a core material is obtained; and arranging the core material between the formaldehyde-free veneers, and carrying out hot press molding to obtain the formaldehyde-free composite board. The formaldehyde-free composite board for the cabinet has excellent mechanical strength, bonding performance and water resistance.

The invention discloses a production process of high-stiffness embossed aluminum foil composite paper. The production process comprises the following steps: (1) selecting and treating raw materials; (2) gluing treatment: uniformly coating the front surface of the lining paper with a modified adhesive by using a coating machine, wherein the modified adhesive comprises modified starch, water, konjac glucomannan, a polyamide curing agent, an accelerant, aluminum sulfate, an AKD emulsion and a defoaming agent; (3) aluminum foil compounding: the aluminum foil is unreeled and attached to the modified adhesive, and then extrusion compounding is performed through a compression roller; (4) embossing and forming: embossing the front surface of the aluminum foil of the aluminum foil composite paper by adopting a heating embossing roller; (5) curing treatment: coating a curing agent on the front surface of the aluminum foil of the aluminum foil composite paper by adopting a micro-concave net roller; and (6) cooling and rolling. The stiffness of the aluminum foil composite paper is effectively enhanced, the bonding capacity between the aluminum foil and the lining paper is enhanced, the smoothness of the surface of the aluminum foil composite paper is remarkably enhanced, the attractiveness is enhanced, and the wear resistance of the aluminum foil composite paper is enhanced.

The present invention provides to a one-part adhesive composition that exhibits superior bonding strength, durability, and versatility. The adhesive is formulated to be easily applied and cured at ambient temperatures, without the need for mixing or specialized equipment. The unique combination of ingredients provides a strong and lasting bond on a variety of substrates, including metals, plastics, wood, and composites.

The invention belongs to the technical field of wood adhesives, and particularly relates to preparation of a starch-based full-biomass green adhesive with high adhesive strength and hot water soaking resistance and application of the starch-based full-biomass green adhesive in wood processing. The method comprises the following steps: preparing a starch-based adhesive from high amylose and tannic acid, treating the surface of wood by using KH560, coating a wood board with the starch-based adhesive, pressing and drying to obtain the plywood. Even if the plywood is soaked in water of 30 DEG C or hot water of 60 DEG C for 3 hours, the plywood does not have glue failure, the shearing strength is higher than 1.0 MPa when the plywood is torn, and the use requirements of national standard II-type plywood are met.

The invention belongs to the technical field of cultural relic protection, and particularly relates to a preparation method and application of a wheat starch adhesive suitable for repairing paper cultural relics. The preparation method of the wheat starch adhesive suitable for repairing the paper cultural relics comprises the following steps: S1, dissolving plant proteolytic enzyme in water, and uniformly stirring to prepare a plant proteolytic enzyme solution; s2, adding wheat flour into the vegetable protein hydrolase solution, and uniformly stirring; s3, further performing centrifugal separation, and washing, dehydrating and drying an obtained solid product for multiple times to obtain wheat starch; and S4, gelatinizing wheat starch to obtain the wheat starch adhesive. According to the method, the wheat flour is treated by adopting the vegetable protein hydrolase, so that protein combined with wheat starch can be efficiently removed, and the wheat starch with relatively high purity and dispersed particle morphology is released; and the formed wheat starch adhesive can significantly improve the folding resistance and tensile strength of paper in the repair of paper cultural relics.

The invention provides a starch-based adhesive for a paper adhesive tape as well as a preparation method and application of the starch-based adhesive, and relates to the technical field of adhesives. The starch-based adhesive for the paper adhesive tape comprises a main component and water, wherein the mass percentage of the main component is 5-10%; the main component is prepared from starch, polyvinyl alcohol and sodium carboxymethyl cellulose in a weight ratio of (25-75): (75-25): (3-7). The starch, the polyvinyl alcohol (PVA) and the carboxymethyl cellulose (CMC) form a blending system, and hydrogen bonds and chains among the three components are entangled to form a physical cross-linked network, so that the prepared starch-based adhesive simultaneously realizes dry-state dormancy (non-adhesion) and wet-state rapid activation (high initial adhesion).

The invention discloses high-content wrinkle-free solid gum, and relates to the field of solid gum, the high-content wrinkle-free solid gum comprises the following components by mass: 30-35% of deionized water, 38-45% of modified starch, 22-25% of dextrin, 2-3% of sodium laurate, 0-1% of sucrose, 3-10% of a humectant, 0-0.5% of a pH regulator, and 0.3-0.5% of a preservative; according to the high-content wrinkle-free solid gum, the double breakthrough of high solid content and wrinkle resistance in the field of solid gum is realized, and the problem of deformation after paper bonding is remarkably solved; depending on the core formula of natural bio-based materials such as starch and dextrin, the product thoroughly eliminates the volatilization of organic solvents, and achieves the green and environment-friendly characteristics of no pollution and zero VOC in the whole process; through cooperation of starch molecule modification and plasticization of dextrin, the fluidity and ductility of colloid are fundamentally improved, the filling efficiency is greatly improved, the gluing process is smoother and more uniform, and the terminal use experience is remarkably optimized.

The present application relates to the technical field of adhesive, in particular to a double crosslinking type starch-based wood adhesive and a preparation method thereof, aiming at solving the technical problems of poor water resistance, long curing time and complex process. In the present application, starch is pre-dispersed and nano-silica modified by octadecyl is added to form a physical crosslinking network of hydrophobic barrier through ultrasonic dispersion; then, alkali lignin, epoxy soybean oil, citric acid, bio-based furan ring-containing di-epoxy monomer and glycerol are sequentially added to form double chemical crosslinking through one-pot heating and stirring; then, copper-histidine organic metal complex is added as a catalyst, and a defoaming agent is added after cooling to obtain the starch-based wood adhesive. The present application significantly improves the water resistance and mechanical strength of the adhesive, and the preparation process is simple and environmentally friendly.

The present invention relates to a method for preparing an eco-friendly functional corrugated-cardboard adhesive composition for food preservation, corrugated cardboard manufactured by using the preparation method, and a corrugated cardboard box. The method for preparing an eco-friendly functional corrugated-cardboard adhesive composition for food preservation includes using modified starch that is made by mixing native starch, zeolite, and magnesium silicate.

The present invention relates to a method for manufacturing a paper or paperboard based packaging laminate, said method comprising: a) providing a paper or paperboard substrate, b) providing a microfibrillated cellulose (MFC) film comprising at least 50 wt% of MFC based on the dry weight of the MFC film, and c) laminating a surface of the paper or paperboard substrate to a surface of the MFC film by a melt adhesive process using a melt adhesive comprising at least 50 wt% of a water soluble thermoplastic polymer based on the dry weight of the melt adhesive, wherein the melt adhesive is applied to the surface of the paper or paperboard substrate and / or to the surface of the MFC film in a low solvent or solvent free form.

The application belongs to the technical field of new materials, and discloses a starch-based adhesive prepared by urea pre-activation and tannin acid post-crosslinking as well as a preparation method and application thereof. The starch-based adhesive comprises a base component and a modifier. The base component comprises waxy cassava starch, gelatin, citric acid, glycerol and water, and the modifier comprises urea and tannin acid. In the preparation process of the base adhesive, two modification processes of "urea pre-activation" and "tannin acid post-crosslinking" are innovatively introduced. Urea, as a hydrogen bond breaker / plasticizer, firstly inserts between the polymer chains of starch, gelatin and the like, breaks part of the original strong hydrogen bonds, increases the movement ability of the chain segments, and exposes more active sites such as hydroxyl groups and amino groups, thereby creating conditions for the subsequent crosslinking reaction of tannin acid. Then, tannin acid is added, and the rich o-benzene triol groups in the molecular structure of tannin acid are used to form multiple strong hydrogen bond interactions with the active sites exposed after activation, so that a more compact and stable double network structure is restructured.

The invention discloses a single-component bio-based epoxy formaldehyde-free adhesive and a preparation method thereof, and relates to the field of adhesives for formaldehyde-free plywood production. The adhesive comprises the following raw materials in parts by weight: 10-20 parts of water, 1-2 parts of cellulose, 0-10 parts of a styrene-acrylic acid copolymer emulsion, 0.1-1 part of a wetting agent, 0.1-1 part of a dispersing agent, 10-20 parts of an acrylate copolymer emulsion, 10-20 parts of an ethylene-vinyl acetate copolymer emulsion, 10-30 parts of an epoxy emulsion, 10-30 parts of starch, 0-10 parts of a polyacrylamide solution, 1-2 parts of an accelerant and 1-2 parts of a pH regulator. 0.1-1 part of a defoaming agent; 0.1-1 part of a mildew preventive; the adhesive disclosed by the invention has the characteristics of long activation period, high bonding strength, good wood breaking effect, high adhesive film hardness, secondary activation of glue through thermal activation and the like; the method can obviously prolong the use time of the glue at the application end, fundamentally improves the pain point that the plywood is long in process time and cannot be segmented, enhances the comprehensive performance of the plywood, and can be applied to soft and hard wood base materials and compact wood.

The present invention relates in particular to an adhesive composition comprising i) microfibrillated cellulose and ii) at least one metal in oxidation state II or higher. The invention further relates to the use of such an adhesive composition and to products produced using such an adhesive composition. Furthermore, the invention relates to a method for producing corrugated paperboard or cardboard or solid paperboard or cardboard by using such an adhesive composition.

An adhesive, and / or a biopolymer that contains Cinnamon and / or cinnamic acid, Tee Tree Oil. Rosemary or other natural essential oil or essence. In at least one embodiment the wt % of Cinnamon is 0.4%. In at least one embodiment the wt % of cinnamic acid is at least 5%. In at least one embodiment the wt % of cinnamic acid is 7%. In at least one embodiment the wt % of cinnamic acid is at least 10%. In addition, there is a process for applying a natural biocide. The adhesive can be combined with paper products, corrugated cardboard or building materials such as wood panels.

The present invention relates to a sizing composition for bonding mineral fibers or natural organic fibers, characterized in that it comprises: - at least one hydrogenated sugar, - at least one polycarboxylic organic acid, - at least one salt of a hydroxylated carboxylic acid: of general formula (I): HO−(C)R1R2−(CH2)n−COOX, or of general formula (II): (HO−(C)R1R2−(CH2)n−COO)2Y, in which R1 is a hydrogen atom, or a methyl group CH3, or an alkyl group of formula (A): –(CH2)p−CH3, where p is an integer between 0 and 6, and R2 is a hydrogen atom, or a methyl group CH3, or an alkyl group of formula (A): –(CH2)p−CH3, where p is an integer between 0 and 6. and 6, and n is an integer between 0 and 2, and X is an element chosen from sodium, potassium and lithium, and Y is an element chosen from calcium, magnesium, beryllium and zinc.The present invention also relates to the method of manufacturing an insulation product comprising mineral fibers or natural organic fibers which uses the aforementioned gluing composition, as well as an insulation product that can be obtained by such a method.

Described is an adhesive coating that can be applied, for example, to a surface of the insulation product. The adhesive coating includes between about 15-40% by weight of the adhesive coating of at least one of polystyrene-maleic anhydride (SMA) and polyacrylic acid (PAA), between about 15 and 50% by weight of the adhesive coating of a polyvinyl alcohol, between about 0.05% and 1.0% by weight of a homogenizer, and between about 20 and 40% by weight of the adhesive coating of a starch paste. The adhesive is activated with the application of liquid water.

An aqueous binder composition for mineral fibres comprises: (a) a sugar syrup containing a reducing sugar and having a dextrose equivalent DE of at least 50 and less than 85; (b) a polycarboxylic acid component; (c) an amine component; and, optionally, (d) a reaction product of a polycarboxylic acid component (b) and an amine component (c).

The present invention relates to a binder composition for wood material boards, as in the form of a one-component system, the binder composition comprising a) at least one sugar, and b) at least one mixture composed of at least one compound of general formula (I) R1 aSiX1 (4-a) (I), wherein X1 is alkoxy, aryloxy, acyloxy, and R1 is an organic moiety selected from the group comprising alkyl, aryl, cycloalkyl, which can be interrupted by -O- or -NH-, and wherein R1 comprises at least one functional group Q1, which is selected from a group containing an acryl group, an acryloxy group, an amino group, an aminoalkylamino group, a methacryl group, a methacryloxy group, a cyano group, an isocyano group, an epoxide group, and an alkenyl group, and a is 0, 1, 2, 3, in particular 0 or 1, at least one compound of general formula (II) R2 bSiX2 (4-b) (II), wherein X2 is alkoxy, aryloxy, acyloxy, R2 is a non-hydrolyzable organic moiety R2 selected from the group comprising alkyl and aryl, and b is 1, 2, 3, or 4, preferably 1 or 2.

A water-based adhesive for the manufacture of laminated cellulosic boards includes monolayer graphene oxide as a glue enhancer. Laminated cellulosic boards may be obtained by providing cellulosic plies, applying a water-based adhesive, and contacting the surface of another cellulosic ply to the first cellulosic ply. A method for producing the water-based adhesive includes mixing starch, water and glue enhancer. The glue enhancer is a suspension of between 0.1 wt % and 0.001 wt % of monolayer graphene oxide in water.

The invention belongs to the technical field of lithium ion batteries, and relates to a preparation method and application of a starch-based lithium ion battery silicon negative electrode binder. The method comprises the following steps: adding starch and lithium fluoride into a solvent, heating, stirring and uniformly mixing to obtain a modified starch polymer binder; the mass ratio of the starch to the lithium fluoride is (20-50): 1. The binder disclosed by the invention has excellent binding performance: through chemical modification and three-dimensional cross-linking design, the binder can remarkably improve the binding power of a silicon monoxide negative electrode, effectively fix an active material and inhibit the active material from falling off. The three-dimensional cross-linked network structure enables the binder to effectively alleviate the volume change problem of silicon monoxide, and avoids the damage to the electrode structure. The natural starch is used as a basic raw material, so that the adhesive is green, environment-friendly and wide in source, and meets the requirement of sustainable development. The binder disclosed by the invention is simple in preparation process, suitable for large-scale production and suitable for manufacturing requirements of various negative electrode materials at the same time.

The present invention relates to an aqueous adhesive composition comprising: - a) starch treated with a starch maltase or maltodextrin treated with a starch maltase; and - b) ammonium zirconium carbonate.

The invention discloses a biodegradable hot melt adhesive and a preparation method thereof. The hot melt adhesive comprises the following components in parts by weight: 50-80 parts of polysuccinic acid-butylene adipate; 0 to 10 parts of poly (butylene succinate); 0-10 parts of thermoplastic starch; 0-3 parts of a compatilizer, 10-50 parts of a tackifier and 0-20 parts of wax. The preparation method comprises the following steps: mixing the poly (butylene succinate-adipate), the poly (butylene succinate) and the thermoplastic starch, adding the compatilizer to obtain a mixture, extruding to obtain a hot melt adhesive matrix, mixing the hot melt adhesive matrix with the compatilizer, the tackifier and the wax, and extruding to obtain the hot melt adhesive. According to the invention, the thermoplastic starch and the poly (butylene succinate) are connected to the chain segment of the poly (butylene succinate-adipate) through the modification of the reactive compatibilizer, so that the melt stability and the material affinity of the hot melt adhesive matrix are enhanced, and the preparation of the hot melt adhesive matrix with stable performance and higher strength is realized.

The present invention relates to an adhesive composition for artificial boards as a one-component system, comprising: a) at least one sugar; and b) at least one mixture consisting of at least one compound of general formula (I) R1 aSiX1 (4-a) (I) wherein X1 is an alkoxy, aryloxy, acyloxy group, and R1 is an organic residue selected from alkyl, aryl, cycloalkyl groups, which can be broken by-O-or-NH-, and wherein R1 has at least one functional group Q1, where R1 is an alkyl group, an aryl group, a cycloalkyl group, which can be broken by-O-or-NH-, and R2 is an organic residue selected from alkyl, aryl, cycloalkyl groups, which can be broken by-O-or-NH-. The functional group Q1 is selected from: acryloyl, acryloyloxy, amino, aminoalkylamino, methacryloyl, methacryloyloxy, cyano, isocyano, epoxy and alkenyl groups, and a = 0, 1, 2, 3, in particular 0 or 1; at least one compound of general formula (II) R2bSiX2 (4-b) (II) wherein X2 is an alkoxy group, an aryloxy group, an acyloxy group, R2 is a non-hydrolysable organic residue R2 selected from alkyl and aryl groups, and b = 1, 2, 3 or 4, preferably 1 or 2.

The invention provides an adhesive for stacking and reinforcing plastic packaging bags as well as a preparation method and application of the adhesive, and belongs to the technical field of adhesives. The adhesive for stacking and reinforcing the plastic packaging bag, provided by the invention, is prepared from the following components in percentage by mass: 10 to 30 percent of maltodextrin, 1 to 10 percent of oligosaccharide, 3 to 15 percent of maltose, 3 to 15 percent of glucose, 0.1 to 0.5 percent of carboxymethylcellulose, 5 to 15 percent of alcohol reagent and the balance of water. The adhesive provided by the invention has the characteristic that the adhesive can be adhered again after being separated for multiple times when being used for stacking and reinforcing plastic packages.

The invention discloses high-solid-content water-soluble starch glue suitable for printing or packaging industry and a preparation method thereof, and belongs to the field of glue, the high-solid-content water-soluble starch glue is mainly prepared from the following components: 100 parts by weight of modified starch, 50-450 parts by weight of functional filler, 0.01-10 parts by weight of surfactant and 3-20 parts by weight of fiber, 10-30 parts by weight of a drying agent and 120-200 parts by weight of water, and the solid content of the high-solid-content water-soluble starch glue is greater than or equal to 70 wt%. No caustic soda or borax participates in the gelatinization link, the solid content is high and is not smaller than 70 wt%, the total thickness and the compressive strength can be increased after the adhesive is used for adhering an adhered object, and moisture absorption and deformation are avoided.

A glue for lignocellulosic material, wherein said glue is made up of several components, said components at least comprising: -a first component which is a dispersion of at least a raw material comprising amino acids and / or molecules containing amino acids, in water; -a second component comprising isocyanates; -a third component comprising tackifiers; and method for manufacturing said glue and board material comprising said glue.

The invention discloses an environment-friendly antibacterial corrugated board and a surface treatment process thereof, the environment-friendly antibacterial corrugated board sequentially comprises an antibacterial composite coating, a pretreated surface paper layer, a first bonding layer, a corrugated core layer, a second bonding layer and a bottom paper layer from outside to inside; the antibacterial composite coating is prepared from the following components in parts by weight: 60-70 parts of bio-based polyurethane emulsion, 5-8 parts of nano zinc oxide, 2-3 parts of sodium alginate, 2-4 parts of polyethylene glycol 400, 0.5-1 part of sodium dodecyl benzene sulfonate and 18-25 parts of deionized water, and the pretreated surface paper layer and the bottom paper layer are raw paper containing a pretreating agent. The pretreatment agent is prepared from the following components in parts by weight: 5-10 parts of wormwood extract, 3-5 parts of chitosan, 1-2 parts of glycerol, 85-92 parts of deionized water and 0.3-0.5 part of citric acid. The invention relates to the technical field of corrugated boards. The paperboard adopts natural environment-friendly raw materials, and is lasting in antibacterial effect, high in physical strength and free of harmful substance residues.

This invention discloses a biodegradable and environmentally friendly corrugated paper adhesive, belonging to the field of adhesive technology. The adhesive of this invention is made from the following raw materials in parts by weight: 30-51.4 parts starch, 3-7 parts sodium hydroxide, 0.3-0.8 parts borax, 0.5-3 parts stabilizer, 0.5-2 parts carboxymethyl pachyman, 0.5-1 part tetrasodium iminodisuccinate, and 100-200 parts water. This invention achieves the effective preparation of a biodegradable, environmentally friendly, and highly adhesive adhesive suitable for corrugated cardboard production, which is beneficial to promoting the ecological transformation of the packaging industry.