CN114907806A - Plant adhesive for artificial board and preparation method thereof - Google Patents

Plant adhesive for artificial board and preparation method thereof Download PDF

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Publication number
CN114907806A
CN114907806A CN202210334397.2A CN202210334397A CN114907806A CN 114907806 A CN114907806 A CN 114907806A CN 202210334397 A CN202210334397 A CN 202210334397A CN 114907806 A CN114907806 A CN 114907806A
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plant
component
adhesive
starch
cross
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钟巍
徐金枝
王喆
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Shanghai Zhongnan Building Materials Co ltd
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Shanghai Zhongnan Building Materials Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/22—Catalysts containing metal compounds
    • C08G18/225—Catalysts containing metal compounds of alkali or alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C08G18/4081—Mixtures of compounds of group C08G18/64 with other macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/62—Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6212—Polymers of alkenylalcohols; Acetals thereof; Oxyalkylation products thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6484—Polysaccharides and derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses a plant-origin adhesive for artificial boards, which belongs to the technical field of adhesives. The component A is an alcoholic hydroxyl system formed by taking plant-based starch as a matrix; wherein the effective mass fraction of the plant-based starch is more than 80 percent in effective mass parts. The component B is a cross-linking agent which can perform cross-linking reaction with the alcoholic hydroxyl group in the component A. The invention provides a plant adhesive for artificial boards, which contains 80% of plant-based components, does not contain formaldehyde, and has good bonding strength, water resistance, durability and processing convenience. When the coating is applied to plate production, the coating is easy to coat uniformly, no hollowing exists, and the yield is high.

Description

Plant adhesive for artificial board and preparation method thereof
Technical Field
The invention relates to the technical field of adhesives, in particular to a plant book adhesive for artificial boards and a preparation method thereof.
Background
As wood becomes more rare and precious, wood-based panels that meet the needs of sustainable development are becoming common boards in decoration. The artificial board is a board made of leftover bits and pieces, shavings, wood chips and other waste materials in the wood processing process and added with chemical adhesives.
The artificial board is more and more widely applied, but the problems that formaldehyde is easy to exceed standards and the like exist generally, and the artificial board becomes the largest barrier for further development of the artificial board today with great attention paid to environmental protection, health and safety. The formaldehyde of the manufactured board originates mainly from the adhesive products used in large quantities in the manufacturing process. At present, most of the production processes still adopt urea formaldehyde, phenol formaldehyde and melamine formaldehyde resins, namely so-called trialdehyde glue, and the adhesive has the characteristics of low price, high bonding strength and difficult glue opening, but can release formaldehyde under certain conditions. Formaldehyde is determined as carcinogenic and teratogenic substances by the world health organization, and the influence on human health is mainly reflected in aspects of abnormal smell, stimulation, sensitization, abnormal lung function, abnormal liver function, abnormal immune function and the like. The concentration of the water-soluble organic acid reaches 0.06-0.07 mg/m 3 in each cubic meter of air When it is used, children can suffer slight asthma; when the formaldehyde content in the indoor air is 0.1mg/m 3 In time, peculiar smell and uncomfortable feeling are generated; reaches 0.5mg/m 3 It can stimulate eyes and cause lacrimation; reaches 0.6mg/m 3 Sometimes, it can cause discomfort or pain in the throat; higher concentrations can cause nausea, vomiting, cough, chest distress, asthma, pulmonary edema, and even death.
In addition to the trialdehyde glue, the industry has also attempted to use other relatively environmentally friendly adhesive products, such as white latex, starch glue, acrylic emulsion, and the like, in view of environmental concerns. The product is slow to dry, has insufficient bonding strength or poor durability, is not suitable for the production process of the plate, and is not popularized and applied in a large area.
Therefore, the problem to be solved in the art is to provide a new environment-friendly adhesive solution.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a vegetable adhesive for artificial boards, which contains up to 80% of vegetable-based components, does not contain formaldehyde, and has good bonding strength, water resistance, durability and processing convenience. When the coating is applied to plate production, the coating is easy to coat uniformly, no hollowing exists, and the yield is high.
To achieve the above and other related objects, an aspect of the present invention provides a graft adhesive for artificial boards, the graft adhesive comprising a component a and a component B;
the component A is an alcoholic hydroxyl system formed by taking plant-based starch as a matrix; wherein the effective mass fraction of the plant-based starch in the component A is more than 80%; the component B is a cross-linking agent which can perform cross-linking reaction with the alcoholic hydroxyl group in the component A.
The effective mass fraction specifically refers to the mass fraction of the plant-based starch in the dry weight of the component A, and the dry weight of the component A refers to the component A with water removed.
In some embodiments of the present invention, the vegetable adhesive comprises the following components in parts by mass:
the component A comprises:
Figure BDA0003574009230000021
the component B comprises: 20-30 parts of a cross-linking agent.
In some embodiments of the invention, the plant-based starch is selected from one or more of soy protein starch, potato starch, tapioca starch.
In some embodiments of the invention, the polyvinyl alcohol has a number average degree of polymerization of 1600-.
In some embodiments of the invention, the kaolin comprises silica and alumina;
preferably, in the kaolin: the mass fraction of the silicon dioxide is 40-50%, and the mass fraction of the aluminum oxide is 30-45%; more preferably, the mass fraction of silica is 46.5%, and the mass fraction of alumina is 39.5%.
In some embodiments of the invention, the catalyst comprises at least potassium persulfate; and/or, the cross-linking agent is selected from polymethylene polyphenyl polyisocyanates and/or triallyl isocyanurate; preferably, the crosslinking agent is polymethylene polyphenyl polyisocyanate.
In some embodiments of the invention, the biocide is an aqueous liquid broad spectrum biocide;
preferably, the bactericide is selected from 2-methylisothiazolinone and/or benzisothiazolinone.
The invention also provides a preparation method of the plant adhesive for the artificial board, which comprises the following steps:
(1) preparation of a component A:
s1, preparing plant-based starch, polyvinyl alcohol, kaolin, a defoaming agent, a catalyst, a bactericide, water and a cross-linking agent according to the mass parts of the components;
s2, preparing an alkali liquor with the pH value of 7.5-9, adding a certain amount of catalyst, uniformly stirring to prepare a premixed solution, wherein the mass fraction of the catalyst is 0.1-0.3%, and uniformly stirring to prepare the premixed solution; preferably, the catalyst is potassium persulfate;
s3, injecting water into the reactor, adding polyvinyl alcohol under stirring, heating to 90-95 ℃, and keeping the temperature to completely dissolve the polyvinyl alcohol;
s4, injecting the premixed solution obtained in the step S2 into the reaction system obtained in the step S3, stirring uniformly, then adding the plant-based starch and the kaolin into the reaction system, and keeping the reaction temperature at 50-80 ℃ to react for 0.5-1.5 h;
s5, after the reaction is finished, adding a defoaming agent and a bactericide into the reaction system;
s6, obtaining a viscous liquid which is the component A;
(2) the component B is a cross-linking agent; the cross-linking agent is selected from polymethylene polyphenyl polyisocyanate and/or triallyl isocyanurate; preferably, the crosslinking agent is polymethylene polyphenyl polyisocyanate.
In some embodiments of the invention, the plant-based starch is obtained by soaking, crushing, grinding, and extracting the rhizome or fruit of the plant.
Detailed Description
In order to make the technical means, objectives and functions of the present invention easy to understand, the present invention will be further described with reference to the following embodiments.
Because the plant-based starch contains a large amount of polysaccharide hydroxyl, the inventor finds that the polyvinyl alcohol reacts with the plant-based starch under specific catalytic conditions, a reticular structure can be formed among molecules, and after kaolin is filled among the reticular molecules, the drying time and the bonding strength of the final glue solution can be effectively improved. And the active functional group of the adhesive is subjected to crosslinking reaction with hydroxyl groups in the plant-based starch and the polyvinyl alcohol by adopting a crosslinking agent to form a stable hydrogen bond, and meanwhile, the adhesive and wood fibers are subjected to crosslinking reaction to generate higher bonding strength. On the basis of this, the present invention has been completed.
The invention provides a plant adhesive for artificial boards, which comprises a component A and a component B;
the component A is an alcoholic hydroxyl system formed by taking plant-based starch as a matrix; the component B is a cross-linking agent which can perform cross-linking reaction with the alcoholic hydroxyl group in the component A. Specifically, the component A and the component B are packaged separately and are mixed according to a proportion for use.
The plant-based starch generally comprises soybean protein starch, potato starch, cassava starch and the like, is wide in source and contains abundant polysaccharide hydroxyl groups. The adhesive of the invention is characterized in that one or more plant-based starches are used as a matrix, and then other additives are matched to form an alcoholic hydroxyl system. When the plant-based starch board is used, the component B is added into the alcoholic hydroxyl system, and a cross-linking agent of the component B and alcoholic hydroxyl are subjected to cross-linking reaction to form a stable multi-dimensional network structure and simultaneously subjected to cross-linking reaction with wood fibers, so that the bonding strength and water resistance of the plant-based starch are improved, and the produced board is environment-friendly and has excellent performance.
In a specific embodiment, the effective mass fraction of the plant-based starch in the A component is greater than 80%. The alcoholic hydroxyl system is a viscous liquid.
In a specific embodiment, the composition formula of the plant adhesive for artificial boards is given as follows:
the plant adhesive comprises the following components in parts by mass:
the component A comprises:
Figure BDA0003574009230000041
the component B comprises: 20-30 parts of a cross-linking agent; optionally 20-25 parts, or 25-30 parts.
In a more preferred embodiment, the plant adhesive comprises the following components in parts by mass:
the component A comprises:
Figure BDA0003574009230000042
the component B comprises: 20-30 parts of a cross-linking agent.
In a preferred embodiment, the plant-based starch is selected from soy protein starch;
in a preferred embodiment, the number average polymerization degree of the polyvinyl alcohol is 1600-.
In a preferred embodiment, the kaolin comprises silica and alumina; the raw materials are cheap and easy to obtain, and the environment-friendly coating is green and free of harmful substances such as formaldehyde and the like. In particular, the kaolin comprises: the mass fraction of the silicon dioxide is 40-50%, and the mass fraction of the aluminum oxide is 30-45%.
Preferably, in the kaolin: the mass fraction of silicon dioxide is 46.5%, and the mass fraction of aluminum oxide is 39.5%.
In a preferred embodiment, the catalyst is potassium persulfate. The potassium persulfate catalyzes molecules of the polyvinyl alcohol and the plant-based starch to form a net structure under the alkaline condition, and the kaolin is filled in the net structure, so that the drying time and the bonding strength of the adhesive liquid can be effectively improved.
In a preferred embodiment, the defoaming agent comprises at least polysiloxane and/or polyether, which is effective to prevent the generation of bubbles in the adhesive during use.
In a preferred embodiment, the biocide is an aqueous liquid broad spectrum biocide; the bactericide is selected from 2-methylisothiazolinone and/or benzisothiazolinone, and can effectively prevent the putrefaction problem of materials.
In a preferred embodiment, the cross-linking agent is polymethylene polyphenyl polyisocyanate. Specifically, the active functional group of the polymethylene polyphenyl polyisocyanate can perform good crosslinking reaction with hydroxyl in the plant-based starch and the polyvinyl alcohol to form an allophanate hydrogen bond. Meanwhile, the adhesive and wood fibers can generate a crosslinking reaction to form carbamate, so that higher bonding strength is generated.
The second aspect of the invention provides a preparation method of the plant adhesive for the artificial board, which comprises the following steps:
(1) preparation of a component A:
s1, preparing reactants according to the mass parts of the components;
s2, preparing an alkali liquor with the pH value of 7.5-9, adding a certain amount of catalyst, and uniformly stirring to prepare a premixed solution, wherein the mass fraction of potassium persulfate is 0.1-0.3%; the alkali liquor is preferably sodium hydroxide solution, and the catalyst is preferably potassium persulfate;
s3, injecting water into the reaction kettle, adding polyvinyl alcohol under stirring, heating to 90-95 ℃, and keeping the temperature to completely dissolve the polyvinyl alcohol;
s4, injecting the premixed solution obtained in the step S2 into the reaction system obtained in the step S3, stirring uniformly, then adding the plant-based starch and the kaolin into the reaction system, and keeping the reaction temperature at 50-80 ℃ to react for 0.5-1.5 h;
s5, after the reaction is finished, adding a defoaming agent and a bactericide into the reaction system;
s6, obtaining a viscous liquid which is the component A;
(2) the component B is a cross-linking agent; the cross-linking agent is selected from polymethylene polyphenyl polyisocyanate and/or triallyl isocyanurate; preferably, the crosslinking agent is polymethylene polyphenyl polyisocyanate. .
Specifically, after being dissolved in water, the polyvinyl alcohol is firstly modified by potassium sulfate under alkaline conditions and forms a net structure with plant-based starch molecules under the catalytic action. Specifically, in the invention, plant-based starch and kaolin are simultaneously added into the modified polyvinyl alcohol solution, and the kaolin is filled between reticular molecules while polyvinyl alcohol and plant-based starch molecules form a reticular structure, so that the drying time and the bonding strength of the adhesive glue solution are improved.
The preparation method of the plant-based starch comprises the following steps: soaking rhizome or fruit of plant, crushing, grinding, and extracting. Extracting and processing for many times to prepare the high-purity plant starch.
The following examples are provided to further illustrate the advantageous effects of the present invention.
In order to make the objects, technical solutions and advantageous technical effects of the present invention more clear, the present invention is further described in detail below with reference to examples. However, it should be understood that the embodiments of the present invention are only for explaining the present invention and are not for limiting the present invention, and the embodiments of the present invention are not limited to the embodiments given in the specification. The experimental methods of the following examples, which are not specified under specific conditions, are generally determined according to national standards. If there is no corresponding national standard, it is carried out according to the universal international standard, the conventional conditions, or the conditions recommended by the manufacturer.
In the following examples, reagents, materials and instruments used are commercially available unless otherwise specified.
Example 1
The plant adhesive in this embodiment comprises the following components in parts by mass:
the component A comprises the following components in parts by mass:
Figure BDA0003574009230000061
wherein the component B is 25 parts of polymethylene polyphenyl polyisocyanateCyanate ester (CAS number: 9016-87-9, molecular formula C) 8 H 7 NO 2 )。
The preparation method of the component A comprises the following steps:
1) carrying out the following experimental steps according to the mass parts;
2) adding a certain amount of catalyst potassium persulfate into a sodium hydroxide solution with the pH value of about 8, and uniformly stirring to prepare a premixed solution, wherein the mass fraction of the potassium persulfate is 0.2%.
3) Injecting water into the reaction kettle, adding polyvinyl alcohol under the stirring state, heating to 90-95 ℃, and preserving heat to completely dissolve the polyvinyl alcohol;
4) injecting the premixed solution obtained in the step S2 into the reaction system obtained in the step 3), uniformly stirring, adding the soybean protein powder and the kaolin, keeping the temperature at 70-80 ℃, preserving the heat for 60 minutes, reacting, and finally adding a defoaming agent and a bactericide to obtain a viscous liquid, namely the component A after the reaction is finished; wherein the defoaming agent is polysiloxane, and the bactericide is 2-methylisothiazolinone and benzisothiazolinone at a ratio of 4: 1.
(2) The component B is polymethylene polyphenyl isocyanate.
The adhesive prepared in example 1 was designated adhesive X.
Example 2
The component A comprises the following components in parts by mass:
Figure BDA0003574009230000071
wherein the component B is 27 parts of polymethylene polyphenyl polyisocyanate (CAS number: 9016-87-9, formula C) 8 H 7 NO 2 )。
The procedure was the same as in example 1, and the adhesive prepared in example 2 was designated adhesive Y.
Example 3
The component A comprises the following components in parts by mass:
Figure BDA0003574009230000072
wherein the component B is 30 parts of polymethylene polyphenyl polyisocyanate (CAS number: 9016-87-9, molecular formula C8H7NO 2).
The procedure is the same as in example 1, and the adhesive prepared in example 3 is designated adhesive Z.
Examples of the experiments
In the production of the plate, hot pressing is used, and the common trialdehyde glue is generally hot pressed for about 14 minutes at 125 ℃, and is slightly changed according to the seasonal conditions.
The plant-based adhesive is used for producing plates, the hot pressing temperature is about 90 ℃, the hot pressing time is about 10 minutes, and the production energy consumption is reduced. The performance test results of the core-board manufactured by using the plant adhesive of the invention are shown in table 1:
TABLE 1
Figure BDA0003574009230000081
The formaldehyde release of the board after being boiled by water is only 0.02mg/L, the surface bonding strength reaches more than 1.16MPa, the board has good adhesive strength, the qualification rate reaches more than 83 percent, and in addition, the dipping and peeling resistance reaches more than 10mm, so the board has good water resistance and dipping and peeling resistance.
The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims (10)

1. The plant adhesive for the artificial board is characterized by comprising a component A and a component B;
the component A is an alcoholic hydroxyl system formed by taking plant-based starch as a matrix;
wherein the effective mass fraction of the plant-based starch in the component A is more than 80%;
the component B is a cross-linking agent which can perform cross-linking reaction with the alcoholic hydroxyl group in the component A.
2. The vegetable adhesive as claimed in claim 1, characterized in that the vegetable adhesive comprises the following components in parts by mass:
the component A comprises:
Figure FDA0003574009220000011
the component B comprises: 20-30 parts of a cross-linking agent.
3. A plant-based adhesive according to claim 2, wherein the plant-based starch is selected from one or more of soy protein starch, potato starch, tapioca starch.
4. The plant adhesive as claimed in claim 2, wherein the number average degree of polymerization of the polyvinyl alcohol is 1600-3000.
5. The vegetable adhesive as claimed in claim 2, wherein the kaolin comprises silicon dioxide and aluminum oxide;
preferably, in the kaolin: the mass fraction of the silicon dioxide is 40-50%, and the mass fraction of the aluminum oxide is 30-45%;
more preferably, the mass fraction of silica is 46.5%, and the mass fraction of alumina is 39.5%.
6. The vegetable adhesive as claimed in claim 2, characterized in that the defoamer comprises at least a polysiloxane and/or a polyether.
7. The vegetable adhesive as set forth in claim 2 wherein the catalyst comprises at least potassium persulfate; and/or, the cross-linking agent is selected from polymethylene polyphenyl polyisocyanates and/or triallyl isocyanurate; preferably, the crosslinking agent is polymethylene polyphenyl polyisocyanate.
8. The plant adhesive according to claim 2, wherein the bactericide is an aqueous liquid broad-spectrum bactericide;
preferably, the bactericide is selected from 2-methylisothiazolinone and/or benzisothiazolinone.
9. The method for preparing a vegetable adhesive for artificial boards according to any one of claims 1 to 8, comprising the steps of:
(1) preparation of a component A:
s1, preparing plant-based starch, polyvinyl alcohol, kaolin, a defoaming agent, a catalyst, a bactericide, water and a cross-linking agent according to the mass parts of the components;
s2, preparing an alkali liquor with the pH value of 7.5-9, and adding a certain amount of catalyst to prepare a premixed solution; preferably, the mass fraction of the catalyst is 0.1-0.3%; preferably, the catalyst is potassium persulfate;
s3, injecting water into the reactor, adding polyvinyl alcohol under stirring, heating to 90-95 ℃, and keeping the temperature to completely dissolve the polyvinyl alcohol;
s4, injecting the premixed solution obtained in the step S2 into the reaction system obtained in the step S3, uniformly mixing, and then adding the plant-based starch and the kaolin into the reaction system to react; preferably, the reaction temperature is 50-80 ℃, and the reaction time is 0.5-1.5 h;
s5, after the reaction is finished, adding a defoaming agent and a bactericide into the reaction system;
s6, obtaining a viscous liquid which is the component A;
(2) the component B is a cross-linking agent selected from polymethylene polyphenyl polyisocyanate and/or triallyl isocyanurate; preferably, the crosslinking agent is polymethylene polyphenyl polyisocyanate.
10. The method for preparing the vegetable adhesive for artificial boards according to claim 9, wherein the vegetable-based starch is obtained by soaking, crushing, grinding and extracting the roots, stems or fruits of plants.
CN202210334397.2A 2022-03-30 2022-03-30 Plant adhesive for artificial board and preparation method thereof Pending CN114907806A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508876A (en) * 2008-10-14 2009-08-19 长春工业大学 Modified starch based adhesion agent for lumber and preparation method
CN102234493A (en) * 2010-04-21 2011-11-09 王钱生 Plant composite adhesive for man-made board and preparation method thereof
CN102559097A (en) * 2011-12-30 2012-07-11 南宁加元化工有限责任公司 Preparation method of cassava starch based biomass formaldehyde-free wood adhesive
CN102925081A (en) * 2012-11-12 2013-02-13 抚顺哥俩好化学有限公司 High-strength double-component laminating glue, and preparation method thereof
CN103320066A (en) * 2012-03-21 2013-09-25 永港伟方（北京）科技股份有限公司 Formaldehyde-free starch adhesive and preparation method thereof
CN104927743A (en) * 2014-03-05 2015-09-23 重庆利尔达科技开发有限公司 Water-based composite environmentally-friendly foaming adhesive made from vinyl polymer and polyurethane, and preparation method of water-based composite environmentally-friendly foaming adhesive
CN107722888A (en) * 2017-10-25 2018-02-23 浙江星丰科技有限公司 A kind of based Wood Adhesives and preparation method thereof
CN109988537A (en) * 2019-04-28 2019-07-09 安徽匠星联创新材料科技有限公司 A kind of starch conversion adhesive for polyurethane and preparation method thereof
CN111187593A (en) * 2020-03-06 2020-05-22 上海都昱新材料科技有限公司 Polymer emulsion adhesive and preparation method and application thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101508876A (en) * 2008-10-14 2009-08-19 长春工业大学 Modified starch based adhesion agent for lumber and preparation method
CN102234493A (en) * 2010-04-21 2011-11-09 王钱生 Plant composite adhesive for man-made board and preparation method thereof
CN102559097A (en) * 2011-12-30 2012-07-11 南宁加元化工有限责任公司 Preparation method of cassava starch based biomass formaldehyde-free wood adhesive
CN103320066A (en) * 2012-03-21 2013-09-25 永港伟方（北京）科技股份有限公司 Formaldehyde-free starch adhesive and preparation method thereof
CN102925081A (en) * 2012-11-12 2013-02-13 抚顺哥俩好化学有限公司 High-strength double-component laminating glue, and preparation method thereof
CN104927743A (en) * 2014-03-05 2015-09-23 重庆利尔达科技开发有限公司 Water-based composite environmentally-friendly foaming adhesive made from vinyl polymer and polyurethane, and preparation method of water-based composite environmentally-friendly foaming adhesive
CN107722888A (en) * 2017-10-25 2018-02-23 浙江星丰科技有限公司 A kind of based Wood Adhesives and preparation method thereof
CN109988537A (en) * 2019-04-28 2019-07-09 安徽匠星联创新材料科技有限公司 A kind of starch conversion adhesive for polyurethane and preparation method thereof
CN111187593A (en) * 2020-03-06 2020-05-22 上海都昱新材料科技有限公司 Polymer emulsion adhesive and preparation method and application thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
唐育民 主编: "《合成洗涤剂及其应用》", vol. 1, 31 May 2006, 中国纺织出版社, pages: 128 - 129 *
时君友 等: ""以聚乙烯醇接枝玉米淀粉为主剂的API胶粘剂"", 《粘接》, vol. 26, no. 6, pages 21 - 22 *

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