CN110982488A - Bean pulp adhesive for solid wood composite floor and preparation method thereof - Google Patents
Bean pulp adhesive for solid wood composite floor and preparation method thereof Download PDFInfo
- Publication number
- CN110982488A CN110982488A CN201911152953.9A CN201911152953A CN110982488A CN 110982488 A CN110982488 A CN 110982488A CN 201911152953 A CN201911152953 A CN 201911152953A CN 110982488 A CN110982488 A CN 110982488A
- Authority
- CN
- China
- Prior art keywords
- parts
- adhesive
- soybean meal
- solid wood
- wood composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
- C09J189/04—Products derived from waste materials, e.g. horn, hoof or hair
-
- 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
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/46—Block or graft polymers prepared by polycondensation of aldehydes or ketones on to macromolecular compounds
-
- 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a soybean meal adhesive for a solid wood composite floor and a preparation method thereof, the process is simple, the operation is convenient, the produced adhesive does not contain formaldehyde, through self-made polyacrylamide-glutaraldehyde resin and microwave treatment and synthesis process, soybean meal molecules are subjected to crosslinking reaction to increase crosslinking density and form a compact network structure, so that the water-resistant bonding performance of the soybean meal-based adhesive is improved, and the adopted technical scheme is as follows: the feed comprises the following raw materials in parts by weight: 62-68 parts of dispersion medium, 25-30 parts of defatted soybean meal, 1-2 parts of sodium bisulfite, 5-8 parts of crosslinking reinforcing agent and 2-4 parts of sodium benzoate; wherein the crosslinking reinforcing agent is polyacrylamide-glutaraldehyde resin, defatted soybean meal powder, water and sodium bisulfite are uniformly mixed, and the mixture is subjected to microwave treatment at 60 ℃ for 10min and heat preservation for 1 h; heating the obtained mixture to 80 ℃, adjusting the pH value to 3-4 by formic acid, adding a crosslinking reinforcing agent, keeping the temperature and stirring for 2h, cooling to 30 ℃, adjusting the pH =9, adding sodium benzoate, and stirring uniformly.
Description
Technical Field
The invention discloses a bean pulp adhesive for a solid wood composite floor and a preparation method thereof, belonging to the technical field of adhesives.
Background
In recent years, the yield of the solid wood composite floor reaches 2 hundred million square meters per year in China, and the adhesive used by the solid wood composite floor is mainly melamine modified urea-formaldehyde resin adhesive, so that the problem of formaldehyde release is solved, and the harm is brought to the living environment of people, especially in a geothermal environment, or special environments such as hospitals and kindergartens and sensitive people. The soybean meal adhesive serving as a novel biomass-based formaldehyde-free adhesive has great development potential, and is particularly applied to the solid wood composite floor industry with relatively high additional value. However, the soybean meal adhesive has the problem of poor water resistance, the water-resistant bonding performance of the soybean meal adhesive can be effectively improved by adding the reinforcing agent in the early research, but the problems of low dry strength, poor product stability, weak bonding capability on individual wood veneering materials such as hickory and the like of the prepared floor product are found in the production and use processes of the floor, so that the large-scale application of the floor product is limited.
In addition, the prior generally adopted artificial board adhesives have the problem of dependence of fossil resources on raw materials, and do not meet the requirements of sustainable development.
Disclosure of Invention
The invention overcomes the defects of the prior art, provides the soybean meal adhesive for the solid wood composite floor and the preparation method thereof, the process is simple, the operation is convenient, the produced adhesive does not contain formaldehyde, the main raw materials are derived from renewable substances, the safety and the environmental protection are realized, and the crosslinking reaction of soybean meal molecules is realized through the self-made polyacrylamide-glutaraldehyde resin and the microwave treatment and synthesis process, so that the crosslinking density is increased, a compact network structure is formed, and the water-resistant bonding performance of the soybean meal-based adhesive is improved.
In order to solve the technical problems, the invention adopts the technical scheme that: the bean pulp adhesive for the solid wood composite floor comprises the following raw materials in parts by weight: 62-68 parts of dispersion medium, 25-30 parts of defatted soybean meal, 1-2 parts of sodium bisulfite, 5-8 parts of crosslinking reinforcing agent and 2-4 parts of sodium benzoate; wherein the crosslinking reinforcing agent is polyacrylamide-glutaraldehyde resin.
The dispersion medium is preferably demineralized water.
A preparation method of a bean pulp adhesive for a solid wood composite floor comprises the following steps:
(1) uniformly mixing defatted soybean meal powder, water and sodium bisulfite, performing microwave treatment at 60 deg.C for 10min, and keeping the temperature for 1 h;
(2) heating the mixture obtained in the step (1) to 80 ℃, adjusting the pH value to 3-4 by formic acid, adding a crosslinking reinforcing agent, keeping the temperature and stirring for 2h, cooling to 30 ℃, adjusting the pH =9, adding sodium benzoate, and stirring uniformly.
A preparation method of a bean pulp adhesive for a solid wood composite floor is disclosed, wherein a crosslinking reinforcing agent is polyacrylamide-glutaraldehyde resin, and the synthesis process comprises the following steps: adding 8 parts by weight of polyacrylamide and 100 parts by weight of deionized water into a reaction kettle, starting stirring, adding 5 parts by weight of sodium hydroxide, and stirring; heating to 70-80 ℃, adding 30 parts by weight of glutaraldehyde, keeping the temperature for 1h, adjusting the pH =7, adding 2 parts by weight of dimethylolpropionic acid for catalytic reaction for 1h, cooling to 40 ℃, adjusting the pH =7.0, discharging, and concentrating to obtain the crosslinking reinforcing agent.
The sodium hydroxide is an aqueous solution with the mass fraction of 30%.
The glutaraldehyde is an aqueous solution with the mass fraction of 50%.
Compared with the prior art, the invention has the following beneficial effects.
1) The soybean meal treated by the method is used as an adhesive for artificial boards, free formaldehyde is not contained, the glued artificial boards do not have the problem of formaldehyde release, and the problem of formaldehyde pollution in indoor air caused by the artificial boards is thoroughly solved.
2) The soybean meal related to the invention is used as a renewable resource and a main raw material of the adhesive, is beneficial to solving the problem of exhaustion of synthetic fossil raw materials used in the conventional artificial board adhesive, and conforms to the principles of environmental protection and sustainable development.
3) The soybean meal adhesive is prepared by processing defatted soybean meal powder, effectively utilizes soybean processing residues, comprehensively utilizes resources, saves production cost and improves the added value of products.
4) The invention adopts the novel polyacrylamide-glutaraldehyde resin as a crosslinking reinforcing agent, combines microwave and denaturant synergistic pretreatment and a polycondensation synthesis process, solves the problem of poor water resistance of the common bean pulp adhesive, can meet the water resistance requirement of the adhesive for artificial boards, ensures the practical performance of the bean pulp adhesive, and ensures that the plywood prepared by the adhesive meets the requirements of II-type plywood in national standard.
Detailed Description
Example one
The bean pulp adhesive for the solid wood composite floor is prepared from the following raw materials in parts by weight:
68kg of softened water
Sodium bisulfite 1kg
26kg of defatted soybean meal powder
3kg of crosslinking enhancer
2kg of sodium benzoate.
A preparation method of a bean pulp adhesive for a solid wood composite floor comprises the following steps:
(1) uniformly mixing defatted soybean meal powder, water and sodium bisulfite, performing microwave treatment at 60 deg.C for 10min, and keeping the temperature for 1 h;
(2) heating the mixture obtained in the step (1) to 80 ℃, adjusting the pH value to 3-4 by formic acid, adding a crosslinking reinforcing agent, keeping the temperature and stirring for 2h, cooling to 30 ℃, adjusting the pH =9, adding sodium benzoate, and stirring uniformly. The performance and quality indexes of the obtained adhesive are shown in table 1.
Example two
The bean pulp adhesive for the solid wood composite floor is prepared from the following raw materials in parts by weight:
64kg of demineralized water
Sodium bisulfite 2kg
29kg of defatted soybean meal powder
Crosslinking enhancer 5kg
4kg of sodium benzoate.
The preparation method of the soybean meal adhesive for the solid wood composite floor is as in the first embodiment, and the performance quality indexes of the obtained adhesive are shown in table 1.
EXAMPLE III
The bean pulp adhesive for the solid wood composite floor is prepared from the following raw materials in parts by weight:
62kg of softened water
Sodium bisulfite 2kg
29kg of defatted soybean meal powder
Crosslinking enhancer 7kg
3kg of sodium benzoate.
The preparation method of the soybean meal adhesive for the solid wood composite floor is as in the first embodiment, and the performance quality indexes of the obtained adhesive are shown in table 1.
Example four
The bean pulp adhesive for the solid wood composite floor is prepared from the following raw materials in parts by weight:
62kg of softened water
Sodium bisulfite 2kg
Defatted soybean meal powder 28kg
Crosslinking enhancer 8kg
3kg of sodium benzoate.
The preparation method of the soybean meal adhesive for the solid wood composite floor is as in the first embodiment, and the performance quality indexes of the obtained adhesive are shown in table 1.
TABLE 1 Performance index of the soybean meal adhesive
Comparative test of product Properties
The first comparative example is as follows: the example four bean pulp and water mixture was used.
Control group two: example four a mixture of soybean meal and water was added with sodium bisulfite and microwaved.
Control group three: in the fourth example, all the raw materials were mixed and stirred uniformly without synthesis.
Experimental example: three-ply 400 x 400mm plywood was produced using the products of examples one to four and comparative examples one to three, respectively.
Poplar veneer: drying to 6-10% of water content; the thickness is 1.5 mm;
the single-board adhesives used the products of examples one to four of the present invention and the products of comparative examples one to four.
The plywood is prepared according to the following normal process:
(1) sizing: the core board is applied with glue on both sides, the glue application amount is 310-2；
(2) Aging mode and time: closing and aging for 20-30 min;
(3) pre-pressing pressure and time: prepressing for 40min at the pressure of 0.9 MPa;
(4) hot pressing pressure: 1.0MPa, the hot-pressing temperature of 120-130 ℃ and the hot-pressing time of 70 s/mm.
The performance of the produced plywood product is detected according to the detection method of GB/T17657-1999 test method for physical and chemical properties of artificial boards and facing artificial boards, and the detection result is shown in Table 2.
TABLE 2 Formaldehyde emission and bond strength of adhesively bonded plywood
Experimental results show that the formaldehyde release amount of the plywood manufactured by the formaldehyde-free soybean meal adhesive is very low (formaldehyde is released by wood bodies), the bonding strength of the plywood is more than 1.05MPa, and the standard of national II-type plywood (poplar is more than or equal to 0.70 MPa) is reached.
Cost analysis
The formaldehyde-free soybean meal adhesive is convenient to use, and does not need to change the existing artificial board production equipment and process, so that the equipment investment is not increased.
The adhesive prepared by the invention can replace the conventional plywood adhesive containing formaldehyde, and the total glue application amount is unchanged when the plywood is prepared, so the use cost is equivalent to that of a urea-formaldehyde resin adhesive and is far lower than that of a phenolic resin adhesive. Therefore, the soybean meal adhesive has good application prospect.
The raw materials used in the invention are common raw materials in the production in the field, can be obtained from the market, and do not influence the production result; the various devices adopted in the invention are conventional devices used in the production process in the field, and the operation, parameters and the like of each device are carried out according to the conventional operations without special points.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. The bean pulp adhesive for the solid wood composite floor is characterized by comprising the following raw materials in parts by weight: 62-68 parts of dispersion medium, 25-30 parts of defatted soybean meal, 1-2 parts of sodium bisulfite, 5-8 parts of crosslinking reinforcing agent and 2-4 parts of sodium benzoate; wherein the crosslinking reinforcing agent is polyacrylamide-glutaraldehyde resin.
2. The soybean meal adhesive for solid wood composite floors as claimed in claim 1, wherein the dispersion medium is preferably softened water.
3. The preparation method of the bean pulp adhesive for the solid wood composite floor as claimed in claim 1, which is characterized by comprising the following steps:
(1) uniformly mixing defatted soybean meal powder, water and sodium bisulfite, performing microwave treatment at 60 deg.C for 10min, and keeping the temperature for 1 h;
(2) heating the mixture obtained in the step (1) to 80 ℃, adjusting the pH value to 3-4 by formic acid, adding a crosslinking reinforcing agent, keeping the temperature and stirring for 2h, cooling to 30 ℃, adjusting the pH =9, adding sodium benzoate, and stirring uniformly.
4. The preparation method of the bean pulp adhesive for the solid wood composite floor as claimed in claim 3, wherein the crosslinking reinforcing agent is polyacrylamide-glutaraldehyde resin, and the synthesis process comprises: adding 8 parts by weight of polyacrylamide and 100 parts by weight of deionized water into a reaction kettle, starting stirring, adding 5 parts by weight of sodium hydroxide, and stirring; heating to 70-80 ℃, adding 30 parts by weight of glutaraldehyde, keeping the temperature for 1h, adjusting the pH =7, adding 2 parts by weight of dimethylolpropionic acid for catalytic reaction for 1h, cooling to 40 ℃, adjusting the pH =7.0, discharging, and concentrating to obtain the crosslinking reinforcing agent.
5. The method for preparing the bean pulp adhesive for the solid wood composite floor as claimed in claim 4, wherein the sodium hydroxide is an aqueous solution with a mass fraction of 30%.
6. The method for preparing the bean pulp adhesive for the solid wood composite floor as claimed in claim 4, wherein the glutaraldehyde is an aqueous solution with a mass fraction of 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152953.9A CN110982488A (en) | 2019-11-22 | 2019-11-22 | Bean pulp adhesive for solid wood composite floor and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911152953.9A CN110982488A (en) | 2019-11-22 | 2019-11-22 | Bean pulp adhesive for solid wood composite floor and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110982488A true CN110982488A (en) | 2020-04-10 |
Family
ID=70085834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911152953.9A Pending CN110982488A (en) | 2019-11-22 | 2019-11-22 | Bean pulp adhesive for solid wood composite floor and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110982488A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341990A (en) * | 2020-11-27 | 2021-02-09 | 马鞍山市康辉纸箱纸品有限公司 | Vegetable protein adhesive for corrugated board production |
| CN116083050A (en) * | 2023-01-03 | 2023-05-09 | 四川大学 | Novel soybean meal adhesive and preparation and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB634777A (en) * | 1945-04-24 | 1950-03-29 | Laucks I F Inc | Improved manufacture of amino-aldehyde adhesives |
| CN104178082A (en) * | 2014-08-21 | 2014-12-03 | 北京林业大学 | Soybean meal-based adhesive for wood and preparation method thereof |
| CN104178083A (en) * | 2014-08-21 | 2014-12-03 | 北京林业大学 | Formaldehyde-free bean-pulp-base artificial board adhesive and preparation method thereof |
-
2019
- 2019-11-22 CN CN201911152953.9A patent/CN110982488A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB634777A (en) * | 1945-04-24 | 1950-03-29 | Laucks I F Inc | Improved manufacture of amino-aldehyde adhesives |
| CN104178082A (en) * | 2014-08-21 | 2014-12-03 | 北京林业大学 | Soybean meal-based adhesive for wood and preparation method thereof |
| CN104178083A (en) * | 2014-08-21 | 2014-12-03 | 北京林业大学 | Formaldehyde-free bean-pulp-base artificial board adhesive and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341990A (en) * | 2020-11-27 | 2021-02-09 | 马鞍山市康辉纸箱纸品有限公司 | Vegetable protein adhesive for corrugated board production |
| CN116083050A (en) * | 2023-01-03 | 2023-05-09 | 四川大学 | Novel soybean meal adhesive and preparation and application thereof |
| CN116083050B (en) * | 2023-01-03 | 2024-04-26 | 四川大学 | Bean pulp adhesive and preparation and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104178082A (en) | Soybean meal-based adhesive for wood and preparation method thereof | |
| CN104497964B (en) | Fibre board use is without aldehyde defatted soy flour base adhesive and preparation method thereof | |
| CN103740324B (en) | A kind of adhesion agent for artificial board and its preparation method and application | |
| CN104762059B (en) | A kind of modified soy-bean protein base adhesive and preparation method thereof | |
| CN110819276B (en) | High-strength low-formaldehyde glue and preparation method thereof | |
| CN110079270A (en) | A kind of fibre modification soybean protein base adhesive of wood-based plate and preparation method thereof | |
| CN109504343B (en) | Formaldehyde-free bean gum and preparation method thereof | |
| CN110982488A (en) | Bean pulp adhesive for solid wood composite floor and preparation method thereof | |
| CN111560225B (en) | Filler for urea-formaldehyde resin for multilayer plywood and preparation method thereof | |
| CN106318313A (en) | Formaldehyde-free soybean-protein-based adhesive for multilayer solid-wood composite floorboard and preparation method of formaldehyde-free soybean-protein-based adhesive | |
| CN104178083A (en) | Formaldehyde-free bean-pulp-base artificial board adhesive and preparation method thereof | |
| US3658622A (en) | Process for making wood laminate | |
| CN106313201B (en) | The method that full Eucalyptus glued board is produced using anti-corrosion composite urea formaldehyde resin | |
| CN107641495A (en) | A kind of vegetable protein adhesive and its preparation method and application | |
| CN108531128B (en) | Aldehyde-free lignin adhesive and preparation method thereof | |
| CN111234132B (en) | Water-based epoxy resin cross-linking agent, modified protein adhesive and application | |
| CN109536126A (en) | A kind of resistance to boiling water vegetable protein base based Wood Adhesives and its preparation method and application | |
| CN106811171A (en) | A kind of modified timber-used dregs of beans base adhesive and preparation method thereof | |
| CN105754546B (en) | A kind of dregs of beans lignin-base adhesive and preparation method thereof | |
| CN103740325B (en) | Adhesion agent for artificial board, its preparation method and utilize its glued board | |
| CN106272849B (en) | The method that Eucalyptus birch composite floor board is produced using high temperature resistant composite urea formaldehyde resin | |
| CN115181543A (en) | Sodium lignosulfonate epoxy resin adhesive and preparation method and application thereof | |
| CN113512399B (en) | Activated lignin modified formaldehyde-free soybean meal-based adhesive and preparation method and application thereof | |
| CN104762041A (en) | Modified urea resin adhesive and preparation method thereof | |
| CN109401726B (en) | PEI-g-HBA prepolymer vegetable protein composite modified adhesive as well as preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 868, Songhua Road, Qingpu District, Shanghai City, Shanghai Applicant after: Shuxiang Mendi Group Co.,Ltd. Applicant after: BEIJING FORESTRY University Address before: No. 868, Songhua Road, Qingpu District, Shanghai City, Shanghai Applicant before: ARTE MUNDI (SHANGHAI) AESTHETIC HOME FURNISHINGS Co.,Ltd. Applicant before: BEIJING FORESTRY University |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200410 |