177results 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 present invention relates to a porous composite feedstock for metal chloride preparation, comprising a metal oxide containing material,; and / or a first additive; and a binder; wherein the porous composite feedstock is in particulate form; wherein the water content of the porous composite feedstock is in the range of from 0.01 to 5 wt.% based on the weight of the porous composite feedstock; and wherein the porous composite feedstock has a poured bulk density in the range of from 0.2 g / cm3 and 2.0 g / cm3.

The present application belongs to the technical field of electrode paste. The present application provides a bio-based binder. The present application also provides a preparation method of the bio-based binder. The present application further provides an electrode paste based on the bio-based binder, which comprises 80-90 parts by mass of aggregate, 10-20 parts by mass of the bio-based binder, and 0.7-1.2 parts by mass of attapulgite. The bio-based binder comprises alcohol with a purity of 55-65%, vegetable pitch, syrup, and starch, and the mass ratio of the alcohol, the vegetable pitch, the syrup, and the starch is (20-25):(150-170):(70-85):(90-110). The present application also provides a preparation method of the electrode paste based on the bio-based binder. The prepared binder is environmentally friendly and has good uniformity. Meanwhile, the cold ramming paste prepared according to the preparation method of the cold ramming paste has high mechanical strength and low porosity.

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 invention belongs to the technical field of natural adhesives, and discloses a natural adhesive with coconut pectin biomass as a raw material and a preparation method thereof.The preparation method comprises the steps that coconut shell fibers, coconut meat residues and other coconut fruit waste are utilized, and active polysaccharide and vegetable protein are obtained through an oxidized saline water extraction technology; the composite adhesive is formed by self-assembly crosslinking of the modified starch, the polyvinyl alcohol, the modified starch and the epoxidized glyceryl polyether. The adhesive is high in bonding strength, the initial strength of 80% or above can still be kept after the adhesive is soaked in water, the content of VOCs is lower than 10 g / L, and the environment-friendly requirement is met. The problem of environmental pollution of a traditional petroleum-based adhesive is solved, meanwhile, the technical defects that an existing bio-based adhesive is insufficient in strength and poor in water resistance are overcome, a green and environment-friendly adhesive substitute is provided for the wood industry, and the production cost is remarkably reduced.

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.

To provide a binder for use as binding material in production of a molding by binding fibers or the like, from which a molding having sufficient strength can be produced.SOLUTION: A binder C10 comprises a binding material particle C2 including a binding material for binding fibers to each other with addition of water, and an inorganic particle C3. The binder C10 further comprises a composite particle C1 in which the binding material particle C2 and the inorganic particle C3 are integrated into one. The inorganic particle C3 has a specific surface area of 150 m2 / g or more and 280 m2 / g or less.SELECTED DRAWING: Figure 1

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 invention relates to an adhesive composition comprising:ground pea seeds comprising between 5 wt % and 40 wt % of crude proteins on the total weight of the ground pea seeds,an amine-based azetidinium-functional cross-linker, andwater.The invention also relates to an article and its preparation process, use of the adhesive composition according to the invention, and use of ground pea seeds.

The invention relates to the technical field of adhesives, and discloses a soybean-based formaldehyde-free adhesive and a preparation method thereof. The adhesive prepared by the invention is prepared from the following raw materials in parts by weight: 30 to 40 parts of soybean protein powder, 5 to 10 parts of starch, 80 to 120 parts of deionized water, 3 to 8 parts of modified cross-linking agent, 2 to 5 parts of reinforcing filler, 2 to 6 parts of sodium hydroxide and 0.5 to 1.5 parts of defoaming agent, soybean protein powder is adopted as an aldehyde-free base material, a modified cross-linking agent, reinforcing filler and other auxiliaries are added, and the adhesive is endowed with excellent bonding strength, water resistance, antibacterial performance, flame retardance and the like. Wherein a large number of epoxy groups are introduced into the modified cross-linking agent and can react with active groups in soybean protein, so that the cross-linking density of the adhesive is improved, and the bonding strength, water resistance, flame retardance and the like of the adhesive are further improved; and the reinforcing filler improves the toughness of the matrix through physical filling, and endows the matrix with certain antibacterial property.

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 invention provides a method for preparing a binder precursor, the method comprising the steps of: i) mixing (A) fungi or glucan and (B) starch with an alkaline agent in the presence of an aqueous solvent system to form an alkaline composition; ii) mixing the alkaline composition with an acidic agent to form a mixture; and iii) drying the mixture and forming a powder therefrom, so as to form a powdered binder precursor.

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.

An environmentally friendly, bio-based binder system that is useful for the formation of fiberglass insulation, the system includes: A) an aqueous curable binder composition, which includes a carbohydrate and a crosslinking agent; and B) a dedust composition, which includes a blown, stripped plant-based oil and optionally at least one emulsifying agent. The bio-based binder system is typically heated to form a cured binder system.

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.

To provide a biodegradable thermal adhesive coating agent composition, which is biodegradable and has superior properties and to provide a method of preparation thereof.SOLUTION: The present invention relates to a biodegradable thermal adhesive coating agent composition and a method of preparation thereof, and more specifically, it relates to a biodegradable thermal adhesive coating agent composition, which is biodegradable in order to be environment-friendly, excellent in its adhesion to substrates of various materials, such as paper, plastic, etc., stable in water resistance and viscosity change, and suitable for a production process using thermal adhesion, as well as a method of preparation thereof.SELECTED DRAWING: Figure 1

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 invention is applicable to the field of wall cloth, and provides antibacterial wall cloth which comprises a base material layer, a decorative layer, a functional layer, an adhesive layer and a protective layer, glutinous rice glue is used in the adhesive layer, and the glutinous rice glue comprises the following components in parts by weight: 70-80 parts of glutinous rice starch, 5-10 parts of nano chitin, 2-5 parts of plant polyphenol, 1-2 parts of cellulose ether, 0.5-1 part of glycerol and 0.05-0.1 part of a defoaming agent; the preparation method of the antibacterial wall cloth comprises the steps of base material preparation, base material pretreatment, decoration layer manufacturing, functional layer compounding, adhesive layer treatment, cutting and packaging. Glutinous rice glue is used in the glue layer treatment. The environment-friendly production equipment comprises a formaldehyde purification box, a formaldehyde purification channel, a material spraying plate, a material injection hose and a zeolite molecular sieve net cover, the material injection hose is communicated to the material spraying plate; the injection hose is used for spraying the safe amino acid formaldehyde removal spray onto the antibacterial wall cloth; and a zeolite molecular sieve net is additionally arranged in the zeolite molecular sieve net cover and is used for purifying formaldehyde.

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.