CN111171760A - High-viscosity waterproof wood adhesive and preparation method thereof - Google Patents
High-viscosity waterproof wood adhesive and preparation method thereof Download PDFInfo
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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
- C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
- C09J129/02—Homopolymers or copolymers of unsaturated alcohols
- C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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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
- 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
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
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Abstract
The invention mainly relates to a high-viscosity waterproof wood adhesive and a preparation method thereof, and belongs to the technical field of adhesive preparation. The high-viscosity waterproof wood adhesive is prepared by using soybeans as raw materials, crushing the soybeans, soaking and extracting the crushed soybeans by using an ethanol solution, concentrating the crushed soybeans to obtain a concentrated solution, sealing and soaking the extracted filter residues by using deionized water, introducing sulfur dioxide gas for reaction, drying the soaked filter residues to obtain modified soybean meal, mixing, calcining and grinding the modified soybean meal by using diatomite, montmorillonite, lime powder and polyvinyl alcohol to obtain a modified inorganic material, mixing and reacting the modified soybean meal, the polyvinyl alcohol and maleic anhydride to obtain a self-made waterproof tackifying filler, and finally performing compound reaction on the self-made waterproof tackifying filler, the concentrated solution, the modified inorganic material, oxalic acid and isocyanate.
Description
Technical Field
The invention mainly relates to a high-viscosity waterproof wood adhesive and a preparation method thereof, and belongs to the technical field of adhesive preparation.
Background
Starch adhesives are adhesives made using starch gelatinization or starch derivatives. Starch is a high molecular carbohydrate, a polysaccharide composed of a single type of sugar unit.
The starch adhesive prepared by the traditional method is actually used for bonding paper products in practice mostly due to low solid content, poor water resistance and poor gluing performance. And the adhesive has high solid content and good water-resistant bonding performance when used for manufacturing the adhesive for wood. For this purpose, the starch has to be modified. The method for modifying starch by adopting more starch is a method of oxidation, grafting and the like, namely oxidizing by using oxidants such as hydrogen peroxide, sodium hypochlorite and the like, and then mixing with organic monomers such as: graft copolymerization of vinyl acetate, acrylic acid, acrylamide, etc. or grafting with aqueous polymers such as PVA, rubber latex, etc.; the water-resistant gluing performance of the starch adhesive is greatly improved by using starch through esterification, crosslinking and other methods. Apparently, the standard requirements can be met from the test results, but the actual production has not been really used due to the complex or high cost of the manufacturing process, the limited use of chemical raw materials, the poor stability of the finished product state, the difficult operation in the actual use process, and the like. Limiting its use in wood adhesives. Chinese patent CN1687279A, "a method for preparing starch glue for wood", proposes a process for preparing starch glue by using starch as a main raw material, performing acidolysis, oxidation, graft copolymerization modification, and finally adding a certain amount of auxiliary agent. The starch glue prepared by the process has the advantages of low cost, environmental protection and the like, the bonding strength of the starch glue reaches the national standard, but the appearance, the bonding strength and the water resistance of the starch glue are still to be improved, so that the starch glue is expected to be applied industrially.
Therefore, the invention of the starch-based wood adhesive with good water resistance and high bonding strength is necessary for the technical field of adhesive preparation.
Disclosure of Invention
The invention mainly solves the technical problems, and provides a high-viscosity waterproof wood adhesive and a preparation method thereof aiming at the defects that the adhesive strength and water resistance of the conventional starch adhesive are poor and the use effect of the conventional starch adhesive is influenced.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a high tack, water resistant wood adhesive comprising: self-made waterproof tackifying filler, modified inorganic material, oxalic acid and isocyanate.
A high-viscosity waterproof wood adhesive comprises the following components in parts by weight: 52-54 parts of self-made waterproof tackifying filler, 15-20 parts of modified inorganic material, 26-28 parts of oxalic acid and 18-20 parts of isocyanate.
A preparation method of a high-viscosity waterproof wood adhesive comprises the following specific preparation steps:
(1) preparing a concentrated solution;
(2) preparing modified soybean powder;
(3) preparing a modified inorganic material;
(4) preparing waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive.
A preparation method of a high-viscosity waterproof wood adhesive comprises the following specific preparation steps:
(1) preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding to obtain soybean ground substances, mixing the obtained soybean ground substances with an ethanol solution with the mass fraction of 70%, putting the mixture into an ultrasonic oscillator, and carrying out ultrasonic oscillation dipping;
after the ultrasonic oscillation dipping is finished, filtering and separating to respectively obtain filtrate and filter residue, putting the obtained filtrate into a rotary evaporator, and performing rotary evaporation and concentration treatment to obtain concentrated solution for later use;
(2) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water, then putting the mixture into a reaction kettle, introducing sulfur dioxide into the reaction kettle, heating, stirring for reaction, putting the mixture into an oven after the reaction is finished, and drying the mixture to constant weight to obtain modified soybean meal for later use;
(3) preparing a modified inorganic material:
weighing diatomite, montmorillonite, lime powder and polyvinyl alcohol, mixing, putting into a sintering furnace, heating, carrying out heat preservation sintering, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(4) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride, then putting the mixture into a reaction kettle, heating and stirring the mixture for reaction to obtain the self-made waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive:
and weighing the self-made waterproof tackifying filler, the modified inorganic material, the spare concentrated solution, the oxalic acid and the isocyanate, putting the materials into a reaction kettle, heating, stirring, reacting, and discharging to obtain the high-viscosity waterproof wood adhesive.
A preparation method of a high-viscosity waterproof wood adhesive comprises the following specific preparation steps:
(1) preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding for 20-30 min to obtain soybean ground materials, and mixing the obtained soybean ground materials with 70% of ethanol solution according to a mass ratio of 1: 5, mixing, putting into an ultrasonic oscillator, and ultrasonically oscillating and dipping for 3-5 hours at the frequency of 35-45 kHz;
after the ultrasonic oscillation dipping is finished, filtering and separating to respectively obtain filtrate and filter residue, putting the obtained filtrate into a rotary evaporator, and performing rotary evaporation and concentration treatment to obtain concentrated solution for later use;
(2) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water according to the mass ratio of 1:2, then putting the mixture into a reaction kettle, introducing sulfur dioxide with the volume of 20-30% of that of the deionized water into the reaction kettle, heating to 50-60 ℃, stirring for reaction for 30-40 hours, putting the mixture into an oven after the reaction is finished, and drying the mixture at 105-110 ℃ to constant weight to obtain modified soybean meal for later use;
(3) preparing a modified inorganic material:
weighing diatomite, montmorillonite, lime powder and polyvinyl alcohol, mixing, putting into a sintering furnace, heating to 700-800 ℃, carrying out heat preservation sintering for 6-8 h, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(4) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride according to the mass ratio of 10:50:1, putting the mixture into a reaction kettle, heating the mixture to 70-80 ℃, and stirring the mixture to react for 1-2 hours to obtain the self-made waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive:
weighing 52-54 parts by weight of the self-made waterproof tackifying filler, 15-20 parts by weight of the modified inorganic material, 5-8 parts by weight of the spare concentrated solution, 26-28 parts by weight of oxalic acid and 18-20 parts by weight of isocyanate, putting into a reaction kettle, heating to 70-80 ℃, stirring at a rotating speed of 100-200 r/min for reaction for 1-2 hours, and discharging to obtain the high-viscosity waterproof wood adhesive.
A preparation method of a high-viscosity waterproof wood adhesive is characterized in that in the preferable preparation step of a concentrated solution, the temperature of rotary evaporation concentration treatment is 60-70 ℃, and the time of rotary evaporation concentration treatment is 30-40 min.
In the preferable preparation step of the modified inorganic material, the weight parts of the diatomite are 20-30 parts, the montmorillonite is 30-40 parts, the lime powder is 20-30 parts, and the polyvinyl alcohol is 100-120 parts.
The beneficial technical effects of the invention are as follows:
(1) the invention firstly takes soybeans as raw materials, the soybeans are crushed and then dipped and extracted by ethanol solution and then concentrated to obtain concentrated solution, then extracted filter residues are soaked in deionized water in a sealing way and are introduced with sulfur dioxide gas for reaction, modified soybean meal is obtained after drying, then diatomite, montmorillonite, lime powder and polyvinyl alcohol are mixed, calcined and ground to obtain modified inorganic materials, then the modified soybean meal, the polyvinyl alcohol and maleic anhydride are mixed and reacted to obtain self-made waterproof tackifying filler, and finally the self-made waterproof tackifying filler, the concentrated solution, the modified inorganic materials, oxalic acid and isocyanate are compounded and reacted to prepare the high-viscosity waterproof wood adhesive. Protein is separated from fiber, the formed soybean meal has thickening and tackifying effects on the adhesive, and active cations of various stone powder in the adhesive and anions in the soybean meal act together to generate a gelling effect, so that adsorption on polar water molecules is reduced, the water resistance is improved, and the water resistance of the wood adhesive is improved;
(2) the invention extracts the filtrate from the soybean, because the concentrated solution contains a small amount of lecithin which can be used as an emulsifier, the surface of the hydrophobic end of the lecithin is lower, the lecithin has excellent hydrophobic property, and the lecithin can be combined with the protein in the soybean meal to form a water-resistant lipoprotein molecular layer to be compatible with isocyanate, and a hydrophobic layer can be formed on the surface of a finally dried adhesive film, thereby improving the water resistance of the wood adhesive film, in addition, the starch in the soybean meal can obtain a polyhydroxy substance with a side chain of glucose ethylene glycol glycoside by utilizing the polyvinyl alcohol under the action of thermal catalysis, the prepared polyhydroxy product has extremely high chemical reaction activity and can be subjected to cross-linking reaction with maleic anhydride to obtain polyester type starch adhesive through polymerization, and then isocyanate groups with high reaction activity are introduced into the polyester type starch adhesive, so that the prepared adhesive has high bonding strength due to the isocyanate adhesive system, the adhesive prepared by the invention has good water resistance, and the adhesive has more high-reactivity groups, can generate chemical bonding force with active groups on the surface of wood, and increases the cohesive force between the wood and the wood, so that the adhesive strength of the adhesive is improved again, and the adhesive has wide application prospect.
Detailed Description
Preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding for 20-30 min to obtain soybean ground materials, and mixing the obtained soybean ground materials with 70% of ethanol solution according to a mass ratio of 1: 5, mixing, putting into an ultrasonic oscillator, and ultrasonically oscillating and dipping for 3-5 hours at the frequency of 35-45 kHz;
after the ultrasonic oscillation dipping is finished, filtering and separating to obtain filtrate and filter residue respectively, putting the obtained filtrate into a rotary evaporator, heating to 60-70 ℃, and performing rotary evaporation and concentration treatment for 30-40 min to obtain concentrated solution for later use;
(1) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water according to the mass ratio of 1:2, then putting the mixture into a reaction kettle, introducing sulfur dioxide with the volume of 20-30% of that of the deionized water into the reaction kettle, heating to 50-60 ℃, stirring for reaction for 30-40 hours, putting the mixture into an oven after the reaction is finished, and drying the mixture at 105-110 ℃ to constant weight to obtain modified soybean meal for later use;
(2) preparing a modified inorganic material:
weighing 20-30 parts of diatomite, 30-40 parts of montmorillonite, 20-30 parts of lime powder and 100-120 parts of polyvinyl alcohol, mixing, putting into a sintering furnace, heating to 700-800 ℃, carrying out heat preservation sintering for 6-8 h, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(3) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride according to the mass ratio of 10:50:1, putting the mixture into a reaction kettle, heating the mixture to 70-80 ℃, and stirring the mixture to react for 1-2 hours to obtain the self-made waterproof tackifying filler;
(4) high-viscosity waterproof wood adhesive:
weighing 52-54 parts by weight of the self-made waterproof tackifying filler, 15-20 parts by weight of the modified inorganic material, 5-8 parts by weight of the spare concentrated solution, 26-28 parts by weight of oxalic acid and 18-20 parts by weight of isocyanate, putting into a reaction kettle, heating to 70-80 ℃, stirring at a rotating speed of 100-200 r/min for reaction for 1-2 hours, and discharging to obtain the high-viscosity waterproof wood adhesive.
Example 1
(1) Preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding for 20min to obtain soybean ground materials, and mixing the obtained soybean ground materials with 70% of ethanol solution according to a mass ratio of 1: 5 mixing, putting into an ultrasonic oscillator, and ultrasonically oscillating and dipping for 3 hours at the frequency of 35 kHz;
after the ultrasonic oscillation dipping is finished, filtering and separating to respectively obtain filtrate and filter residue, putting the obtained filtrate into a rotary evaporator, heating to 60 ℃, and carrying out rotary evaporation and concentration treatment for 30min to obtain concentrated solution for later use;
(2) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water according to the mass ratio of 1:2, then putting the mixture into a reaction kettle, introducing sulfur dioxide with the volume of 20% of that of the deionized water into the reaction kettle, heating to 50 ℃, stirring for reaction for 30 hours, putting the mixture into an oven after the reaction is finished, and drying the mixture at 105 ℃ to constant weight to obtain modified soybean meal for later use;
(3) preparing a modified inorganic material:
weighing 20 parts of diatomite, 30 parts of montmorillonite, 20 parts of lime powder and 100 parts of polyvinyl alcohol, mixing, putting into a sintering furnace, heating to 700 ℃, carrying out heat preservation sintering for 6 hours, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(4) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride according to the mass ratio of 10:50:1, putting the mixture into a reaction kettle, heating the mixture to 70 ℃, and then stirring the mixture for reaction for 1 hour to obtain the self-made waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive:
weighing 52 parts of the self-made waterproof tackifying filler, 15 parts of modified inorganic material, 5 parts of standby concentrated solution, 26 parts of oxalic acid and 18 parts of isocyanate in parts by weight, putting into a reaction kettle, heating to 70 ℃, stirring at a rotating speed of 100r/min for reaction for 1 hour, and discharging to obtain the high-viscosity waterproof wood adhesive.
Example 2
(1) Preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding for 25min to obtain soybean ground materials, and mixing the obtained soybean ground materials with 70% of ethanol solution according to a mass ratio of 1: 5 mixing and putting into an ultrasonic oscillator, and ultrasonically oscillating and dipping for 4 hours at the frequency of 40 kHz;
after the ultrasonic oscillation dipping is finished, filtering and separating to respectively obtain filtrate and filter residue, putting the obtained filtrate into a rotary evaporator, heating to 65 ℃, and carrying out rotary evaporation and concentration treatment for 35min to obtain concentrated solution for later use;
(2) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water according to the mass ratio of 1:2, then putting the mixture into a reaction kettle, introducing sulfur dioxide with the volume of 25% of that of the deionized water into the reaction kettle, heating to 55 ℃, stirring for reaction for 35 hours, putting the mixture into an oven after the reaction is finished, and drying the mixture at 108 ℃ to constant weight to obtain modified soybean meal for later use;
(3) preparing a modified inorganic material:
weighing 25 parts of diatomite, 35 parts of montmorillonite, 25 parts of lime powder and 110 parts of polyvinyl alcohol, mixing, putting into a sintering furnace, heating to 750 ℃, carrying out heat preservation sintering for 7 hours, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(4) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride according to the mass ratio of 10:50:1, putting the mixture into a reaction kettle, heating the mixture to 75 ℃, and stirring the mixture for reaction for 2 hours to obtain the self-made waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive:
weighing 53 parts of the self-made waterproof tackifying filler, 18 parts of modified inorganic material, 7 parts of standby concentrated solution, 27 parts of oxalic acid and 19 parts of isocyanate, putting into a reaction kettle, heating to 75 ℃, stirring at a rotating speed of 150r/min for reaction for 2 hours, and discharging to obtain the high-viscosity waterproof wood adhesive.
Example 3
(1) Preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding for 30min to obtain soybean ground materials, and mixing the obtained soybean ground materials with 70% of ethanol solution according to a mass ratio of 1: 5 mixing and putting into an ultrasonic oscillator, and ultrasonically oscillating and dipping for 5 hours at the frequency of 45 kHz;
after the ultrasonic oscillation dipping is finished, filtering and separating to respectively obtain filtrate and filter residue, putting the obtained filtrate into a rotary evaporator, heating to 70 ℃, and carrying out rotary evaporation and concentration treatment for 40min to obtain concentrated solution for later use;
(2) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water according to the mass ratio of 1:2, then putting the mixture into a reaction kettle, introducing sulfur dioxide with the volume of 30% of that of the deionized water into the reaction kettle, heating to 60 ℃, stirring for reaction for 40 hours, putting the mixture into an oven after the reaction is finished, and drying the mixture at 110 ℃ to constant weight to obtain modified soybean meal for later use;
(3) preparing a modified inorganic material:
weighing 30 parts of diatomite, 40 parts of montmorillonite, 30 parts of lime powder and 120 parts of polyvinyl alcohol, mixing, putting into a sintering furnace, heating to 800 ℃, carrying out heat preservation sintering for 8 hours, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(4) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride according to the mass ratio of 10:50:1, putting the mixture into a reaction kettle, heating the mixture to 80 ℃, and stirring the mixture for reaction for 2 hours to obtain the self-made waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive:
weighing 54 parts by weight of the self-made waterproof tackifying filler, 20 parts by weight of the modified inorganic material, 8 parts by weight of the standby concentrated solution, 28 parts by weight of oxalic acid and 20 parts by weight of isocyanate, putting the materials into a reaction kettle, heating the materials to 80 ℃, stirring the materials at a rotating speed of 200r/min for reaction for 2 hours, and then discharging the materials to obtain the high-viscosity waterproof wood adhesive.
Comparative example 1: the preparation method is basically the same as the present invention except that the modified soybean powder of the present invention is replaced with a common soybean powder;
comparative example 2: the preparation method is basically the same as the invention, except that the modified inorganic material of the invention is replaced by the common inorganic material;
comparative example 3: the preparation method is basically the same as the invention, and the difference is that the waterproof tackifying filler which is not used in the invention is not added;
the performance of the wood adhesive prepared by the invention and the performance of the wood adhesive in the comparative example are respectively detected, and the detection results are shown in table 1:
the dry strength and wet strength tests were carried out according to the test method for tensile shear strength of the wood adhesive of GB T33333-2016.
TABLE 1 measurement results of Properties
| Detecting items | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Dry Strength (MPa) | 9.12 | 9.13 | 9.25 | 4.53 | 5.08 | 3.15 |
| Wet strength (MPa) | 8.73 | 8.85 | 8.90 | 2.44 | 2.13 | 1.69 |
In summary, it can be seen from table 1 that the high-viscosity waterproof wood adhesive prepared by the invention has good water resistance, high dry strength and wet strength, and wide application prospect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of the invention is to be construed in all aspects and as broadly as possible, and all changes, equivalents and modifications that fall within the true spirit and scope of the invention are therefore intended to be embraced therein.
Claims (7)
1. A high-viscosity waterproof wood adhesive is characterized by comprising: self-made waterproof tackifying filler, modified inorganic material, oxalic acid and isocyanate.
2. The high-viscosity waterproof wood adhesive according to claim 1, which is characterized by comprising the following components in parts by weight: 52-54 parts of self-made waterproof tackifying filler, 15-20 parts of modified inorganic material, 26-28 parts of oxalic acid and 18-20 parts of isocyanate.
3. A preparation method of a high-viscosity waterproof wood adhesive is characterized by comprising the following specific preparation steps:
(1) preparing a concentrated solution;
(2) preparing modified soybean powder;
(3) preparing a modified inorganic material;
(4) preparing waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive.
4. The preparation method of the high-viscosity waterproof wood adhesive according to claim 3, which is characterized by comprising the following specific preparation steps:
(1) preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding to obtain soybean ground substances, mixing the obtained soybean ground substances with an ethanol solution with the mass fraction of 70%, putting the mixture into an ultrasonic oscillator, and carrying out ultrasonic oscillation dipping;
after the ultrasonic oscillation dipping is finished, filtering and separating to respectively obtain filtrate and filter residue, putting the obtained filtrate into a rotary evaporator, and performing rotary evaporation and concentration treatment to obtain concentrated solution for later use;
(2) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water, then putting the mixture into a reaction kettle, introducing sulfur dioxide into the reaction kettle, heating, stirring for reaction, putting the mixture into an oven after the reaction is finished, and drying the mixture to constant weight to obtain modified soybean meal for later use;
(3) preparing a modified inorganic material:
weighing diatomite, montmorillonite, lime powder and polyvinyl alcohol, mixing, putting into a sintering furnace, heating, carrying out heat preservation sintering, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(4) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride, then putting the mixture into a reaction kettle, heating and stirring the mixture for reaction to obtain the self-made waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive:
and weighing the self-made waterproof tackifying filler, the modified inorganic material, the spare concentrated solution, the oxalic acid and the isocyanate, putting the materials into a reaction kettle, heating, stirring, reacting, and discharging to obtain the high-viscosity waterproof wood adhesive.
5. The preparation method of the high-viscosity waterproof wood adhesive according to claim 4, which is characterized by comprising the following specific preparation steps:
(1) preparation of concentrated solution:
weighing soybeans, putting the soybeans into a tissue grinder, grinding for 20-30 min to obtain soybean ground materials, and mixing the obtained soybean ground materials with 70% of ethanol solution according to a mass ratio of 1: 5, mixing, putting into an ultrasonic oscillator, and ultrasonically oscillating and dipping for 3-5 hours at the frequency of 35-45 kHz;
after the ultrasonic oscillation dipping is finished, filtering and separating to respectively obtain filtrate and filter residue, putting the obtained filtrate into a rotary evaporator, and performing rotary evaporation and concentration treatment to obtain concentrated solution for later use;
(2) preparation of modified soybean powder:
mixing the obtained filter residue and deionized water according to the mass ratio of 1:2, then putting the mixture into a reaction kettle, introducing sulfur dioxide with the volume of 20-30% of that of the deionized water into the reaction kettle, heating to 50-60 ℃, stirring for reaction for 30-40 hours, putting the mixture into an oven after the reaction is finished, and drying the mixture at 105-110 ℃ to constant weight to obtain modified soybean meal for later use;
(3) preparing a modified inorganic material:
weighing diatomite, montmorillonite, lime powder and polyvinyl alcohol, mixing, putting into a sintering furnace, heating to 700-800 ℃, carrying out heat preservation sintering for 6-8 h, discharging, crushing, and sieving with a 200-mesh sieve to obtain a modified inorganic material;
(4) preparing waterproof tackifying filler:
mixing the standby modified soybean powder, 20 mass percent polyvinyl alcohol solution and maleic anhydride according to the mass ratio of 10:50:1, putting the mixture into a reaction kettle, heating the mixture to 70-80 ℃, and stirring the mixture to react for 1-2 hours to obtain the self-made waterproof tackifying filler;
(5) high-viscosity waterproof wood adhesive:
weighing 52-54 parts by weight of the self-made waterproof tackifying filler, 15-20 parts by weight of the modified inorganic material, 5-8 parts by weight of the spare concentrated solution, 26-28 parts by weight of oxalic acid and 18-20 parts by weight of isocyanate, putting into a reaction kettle, heating to 70-80 ℃, stirring at a rotating speed of 100-200 r/min for reaction for 1-2 hours, and discharging to obtain the high-viscosity waterproof wood adhesive.
6. The preparation method of the high-viscosity waterproof wood adhesive according to claim 4 or 5, wherein the preparation method comprises the following steps: in the preparation step of the concentrated solution, the temperature of rotary evaporation concentration treatment is 60-70 ℃, and the time of rotary evaporation concentration treatment is 30-40 min.
7. The preparation method of the high-viscosity waterproof wood adhesive according to claim 4 or 5, wherein the preparation method comprises the following steps: in the preparation step of the modified inorganic material, by weight, 20-30 parts of diatomite, 30-40 parts of montmorillonite, 20-30 parts of lime powder and 100-120 parts of polyvinyl alcohol.
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| CN111748304A (en) * | 2020-07-08 | 2020-10-09 | 马科 | Preparation method of waterproof starch-based wood adhesive with high bonding strength |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0470748A2 (en) * | 1990-08-06 | 1992-02-12 | Cpc International Inc. | High-speed starch-based corrugating adhesive containing a carrier phase comprised of starch, modified starch or dextrin and polyvinyl alcohol |
| CN102146273A (en) * | 2011-02-12 | 2011-08-10 | 东营正化环保科技有限公司 | Formaldehyde-free phenol-free adhesive and preparation method thereof |
| CN102876284A (en) * | 2012-10-10 | 2013-01-16 | 东北林业大学 | Water resistant soy protein adhesive for wood processing and preparation method thereof |
| CN105153964A (en) * | 2015-09-18 | 2015-12-16 | 安徽创业机电设备有限公司 | Adhesive special for motor rotor |
-
2019
- 2019-12-10 CN CN201911253984.3A patent/CN111171760A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0470748A2 (en) * | 1990-08-06 | 1992-02-12 | Cpc International Inc. | High-speed starch-based corrugating adhesive containing a carrier phase comprised of starch, modified starch or dextrin and polyvinyl alcohol |
| CN102146273A (en) * | 2011-02-12 | 2011-08-10 | 东营正化环保科技有限公司 | Formaldehyde-free phenol-free adhesive and preparation method thereof |
| CN102876284A (en) * | 2012-10-10 | 2013-01-16 | 东北林业大学 | Water resistant soy protein adhesive for wood processing and preparation method thereof |
| CN105153964A (en) * | 2015-09-18 | 2015-12-16 | 安徽创业机电设备有限公司 | Adhesive special for motor rotor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111748304A (en) * | 2020-07-08 | 2020-10-09 | 马科 | Preparation method of waterproof starch-based wood adhesive with high bonding strength |
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