CN113563841B - Modified vegetable protein adhesive and preparation method thereof - Google Patents
Modified vegetable protein adhesive and preparation method thereof Download PDFInfo
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- CN113563841B CN113563841B CN202110774084.4A CN202110774084A CN113563841B CN 113563841 B CN113563841 B CN 113563841B CN 202110774084 A CN202110774084 A CN 202110774084A CN 113563841 B CN113563841 B CN 113563841B
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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
- C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention discloses a modified vegetable protein adhesive which is prepared from the following raw materials in parts by weight: 150-250 parts of plant protein powder, 600-900 parts of deionized water, 100-150 parts of silkworm cocoon, 5-10 parts of alkaline regulator and 30-50 parts of protein denaturant. The preparation method comprises the following steps: cleaning silkworm cocoon with clear water, drying, grinding, and sieving to obtain silkworm cocoon powder; adding vegetable protein powder, deionized water and a protein denaturant into a reaction kettle, and stirring at 50-60 ℃ to obtain a reaction mixture; adding silkworm cocoon powder into the reaction mixture, then adding an alkaline regulator, heating to 50-60 ℃, and continuously stirring; and after the reaction is finished, cooling to obtain the modified vegetable protein adhesive. The invention adopts natural substance silkworm cocoon modified vegetable protein adhesive, and does not add substances such as chemical cross-linking agent, reinforcing agent and the like, and no harmful substance is added and released in the preparation process.
Description
Technical Field
The invention relates to the technical field of wood adhesives, in particular to a modified vegetable protein adhesive and a preparation method thereof.
Background
The artificial board industry in China is developed at a high speed, the consumption reaches 2.94 billion cubic meters in 2019 years, adhesives for the artificial boards are mainly formaldehyde thermosetting resins such as urea-formaldehyde resin, phenolic resin, melamine formaldehyde resin and the like, and the adhesive-bonded artificial boards have the problem of formaldehyde release and bring serious influence on human living environment. Published in 3 months in 2021 and the national standard GB/T39600-2021 Classification of Formaldehyde emission from Artificial Board and products thereof, the Formaldehyde emission limit value of indoor artificial boards and products thereof is classified into 3 grades (E) 1 Grade is less than or equal to 0.124mg/m 3 、E 0 Grade less than or equal to 0.050mg/m 3 And E NF Grade less than or equal to 0.025mg/m 3 ) The low-formaldehyde and formaldehyde-free additive adhesive becomes a necessary development trend in the future, and has a wide market prospect.
In recent years, formaldehyde-free adhesives such as isocyanate, vegetable protein glue and starch glue are beginning to be applied on the market gradually. The vegetable protein adhesive is one of non-aldehyde adhesives mainly researched at present, the water resistance and the bonding strength of the adhesive can be improved by various methods, the physical and chemical properties of the adhesive can be improved, the protein is chemically modified and then copolymerized and crosslinked in a mode of adding a crosslinking agent, a reinforcing agent and a modifying agent, or the protein adhesive and other resins are mixed to prepare a multi-component composite adhesive, however, most of the substances are organic substances with higher cost, the cost of the adhesive is increased, and on the other hand, harmful substances can be brought.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a modified vegetable protein adhesive and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a modified vegetable protein adhesive, which is prepared from the following raw materials in parts by weight: 150-250 parts of plant protein powder, 600-900 parts of deionized water, 100-150 parts of silkworm cocoon, 5-10 parts of alkaline regulator and 30-50 parts of protein denaturant.
Preferably, the vegetable protein powder is one or more of bean protein powder, cottonseed protein powder, corn protein powder and wheat protein powder.
Preferably, the alkaline regulator is one or more of sodium hydroxide, potassium hydroxide and ammonia water.
Preferably, the protein treating agent is one or more of urea, sodium dodecyl benzene sulfonate, guanidine hydrochloride and sodium dodecyl sulfate.
In a second aspect of the present invention, a preparation method of the modified vegetable protein adhesive is provided, which includes the following steps:
(1) Cleaning silkworm cocoon with clear water, drying, grinding, and sieving to obtain silkworm cocoon powder;
(2) Adding vegetable protein powder, deionized water and a protein denaturant into a reaction kettle, and stirring at 50-60 ℃ to obtain a reaction mixture;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), then adding an alkaline regulator, heating to 50-60 ℃, and continuously stirring;
(4) And after the reaction is finished, cooling to obtain the modified vegetable protein adhesive.
Adding vegetable protein powder, deionized water and a protein denaturant, and leading the protein to fully open a peptide chain under the treatment of the protein denaturant to expose a reaction group, thereby facilitating the reaction of the silkworm cocoon powder and the alkaline regulator in the next step.
Preferably, in step (1), the sieving is performed by sieving with a 200-mesh sieve or more.
Preferably, in the step (4), the temperature is reduced to room temperature.
Preferably, in the step (2), the stirring time is 1-2 hours, and the stirring speed is 500-800r/min.
Preferably, in the step (3), the stirring time is 1-2 hours, and the stirring speed is 500-800r/min.
In a third aspect of the invention, the application of the vegetable protein adhesive in preparing artificial boards is provided.
The invention has the beneficial effects that:
1. the adhesive preparation process has no addition of any harmful substance, the glue solution does not contain harmful components, and the glued artificial board has no release of formaldehyde and other VOC.
2. The invention utilizes the characteristics of natural silkworm cocoon, wherein the silkworm cocoon is mainly formed by bonding fibrous protein silk fibroin coated with sericin, wherein the silk fibroin accounts for about 70%, and the sericin accounts for about 22%. The two proteins are natural high molecular proteins, have good mechanical properties, physical and chemical properties, film forming properties and higher flexibility and tensile strength, can obviously improve the molecular structure and the film forming properties of the vegetable protein adhesive, and enable the adhesive film to be more compact and flat, thereby achieving the purpose of improving the water resistance. The process can enable the plant protein and two proteins in the silkworm cocoons to act synergistically, prepare the adhesive meeting the industrial use requirement under the condition of not adding substances such as a chemical cross-linking agent, a reinforcing agent and the like, effectively reduce the cost, simplify the process, improve the performance and accord with the principles of circular economy and sustainable development.
3. The viscosity and the storage period of the modified plant protein adhesive prepared by the invention meet the production and use requirements, and the glued plywood meets the water-resistant gluing strength requirement of the II-type glued board in the national standard (GB 17657-2013 physical and chemical property experimental method for artificial boards and veneering artificial boards).
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As introduced in the background art, when vegetable protein is applied to wood adhesives for artificial boards at present, a chemical crosslinking agent and a reinforcing agent are generally added to chemically modify protein and then to copolymerize and crosslink the protein, or the protein adhesive and other resins are mixed to prepare a multi-component composite adhesive, however, the added substances are organic substances with high cost, which increases the cost of the adhesive on one hand and may bring about pollution of harmful substances on the other hand.
Based on the above, the invention aims to provide a modified vegetable protein adhesive and a preparation method thereof, wherein natural silkworm cocoons are used as a modifier, and the adhesive meeting the industrial use requirement is prepared under the condition that substances such as a chemical crosslinking agent, a reinforcing agent and the like are not added, so that the adhesive cost is effectively reduced, and the production process is simplified.
The viscosity, the storage period and the working life of the modified plant protein adhesive prepared by the invention all meet the industrial production requirements of artificial boards, no harmful substances are added, the bonded plywood has no formaldehyde release, and the water-resistant bonding strength meets the requirements of national standard (GB 17657-2013 physicochemical property experimental method for artificial boards and veneer artificial boards) type II plywood.
The test materials used in the examples of the present invention are all conventional in the art and commercially available.
Example 1: a preparation method of the modified vegetable protein adhesive comprises the following steps:
(1) Cleaning 100 parts of silkworm cocoon with clear water, drying, grinding and screening to obtain 200-mesh silkworm cocoon powder;
(2) Adding 150 parts of soybean protein powder, 600 parts of deionized water and 30 parts of urea into a reaction kettle, and stirring at the temperature of 50-60 ℃ for 2 hours at the stirring speed of 500r/min;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), then adding 5 parts of sodium hydroxide, heating to 50-60 ℃, and continuously stirring for 2 hours at the stirring speed of 500r/min.
(4) And after the reaction is finished, cooling to obtain the modified vegetable protein adhesive. The performance index of the adhesive is shown in table 1.
Example 2: a preparation method of the modified vegetable protein adhesive comprises the following steps:
(1) Cleaning 150 parts of silkworm cocoon with clear water, drying, grinding and screening to obtain 200-mesh silkworm cocoon powder;
(2) Adding 200 parts of soybean protein powder, 750 parts of deionized water and 40 parts of guanidine hydrochloride into a reaction kettle, and stirring at the temperature of 50-60 ℃ for 1 hour at the stirring speed of 800r/min;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), then adding 8 parts of sodium hydroxide, heating to 50-60 ℃, and continuously stirring for 1 hour at the stirring speed of 800r/min;
(4) And after the reaction is finished, cooling to obtain the modified vegetable protein adhesive. The performance index of the adhesive is shown in table 1.
Example 3: a preparation method of a modified vegetable protein adhesive comprises the following steps:
(1) Cleaning 140 parts of silkworm cocoon with clear water, drying, grinding and screening to obtain 200-mesh silkworm cocoon powder;
(2) Adding 200 parts of cottonseed protein powder, 800 parts of deionized water and 45 parts of guanidine hydrochloride into a reaction kettle, and stirring at the temperature of 50-60 ℃ for 1.5 hours at the stirring speed of 600r/min;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), then adding 10 parts of potassium hydroxide, heating to 50-60 ℃, and continuously stirring for 1.5 hours at the stirring speed of 600r/min;
(4) And after the reaction is finished, cooling to obtain the modified vegetable protein adhesive. The performance index of the adhesive is shown in table 1.
Comparative example 1: a preparation method of a soy protein adhesive comprises the following steps:
(1) Adding 150 parts of soybean protein powder, 600 parts of deionized water and 30 parts of urea into a reaction kettle, and stirring at the temperature of 50-60 ℃ for 2 hours at the stirring speed of 500r/min;
(2) Adding 5 parts of sodium hydroxide into the reaction mixture in the step (1), heating to 50-60 ℃, and continuously stirring for 2 hours at the stirring speed of 500r/min;
(3) And after the reaction is finished, cooling to obtain the soy protein adhesive. The performance index of the adhesive is shown in table 1.
Comparative example 1 compared to example 1, no cocoons were added.
Comparative example 2: a preparation method of a soy protein adhesive comprises the following steps:
(1) Cleaning 100 parts of silkworm cocoon with clear water, drying, grinding and screening to obtain 200-mesh silkworm cocoon powder;
(2) Adding 150 parts of soybean protein powder and 600 parts of deionized water into a reaction kettle, and stirring at the temperature of 50-60 ℃ for 2 hours at the stirring speed of 500r/min;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), then adding 5 parts of sodium hydroxide, heating to 50-60 ℃, and continuously stirring for 2 hours at the stirring speed of 500r/min;
(4) And after the reaction is finished, cooling to obtain the soy protein adhesive. The performance index of the adhesive is shown in table 1.
Comparative example 2 compared to example 1, no protein denaturant was added.
Comparative example 3: a preparation method of a soy protein adhesive comprises the following steps:
(1) Cleaning 100 parts of silkworm cocoon with clear water, drying, grinding and screening to obtain 200-mesh silkworm cocoon powder;
(2) Adding 150 parts of soybean protein powder, 600 parts of deionized water and 30 parts of urea into a reaction kettle, and stirring at the temperature of 50-60 ℃ for 2 hours at the stirring speed of 500r/min;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), heating to 50-60 ℃, and continuously stirring for 2 hours at the stirring speed of 500r/min;
(4) And after the reaction is finished, cooling to obtain the soy protein adhesive. The performance index of the adhesive is shown in table 1.
Comparative example 3 compared to example 1, no alkaline modifier was added.
Comparative example 4: a preparation method of the modified vegetable protein adhesive comprises the following steps:
(1) Cleaning 100 parts of silkworm cocoon with clear water, drying, grinding and screening to obtain 200-mesh silkworm cocoon powder;
(2) Adding 150 parts of soybean protein powder, 600 parts of deionized water and 30 parts of urea into a reaction kettle, and stirring at the temperature of 70-80 ℃ for 2 hours at the stirring speed of 500r/min;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), then adding 5 parts of sodium hydroxide, heating to 50-60 ℃, and continuously stirring for 2 hours at the stirring speed of 500r/min.
(4) And after the reaction is finished, cooling to obtain the modified vegetable protein adhesive. The performance index of the adhesive is shown in table 1.
Comparative example 4 the reaction temperature in step (2) was increased to 70-80 c compared to example 1.
Comparative example 5: a preparation method of a modified vegetable protein adhesive comprises the following steps:
(1) Cleaning 100 parts of silkworm cocoon with clear water, drying, grinding and screening to obtain 200-mesh silkworm cocoon powder;
(2) Adding 150 parts of soybean protein powder, 600 parts of deionized water and 30 parts of urea into a reaction kettle, and stirring at the temperature of 50-60 ℃ for 2 hours at the stirring speed of 500r/min;
(3) And (3) adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture obtained in the step (2), then adding 5 parts of sodium hydroxide, stirring and cooling to obtain the modified vegetable protein adhesive. The performance index of the adhesive is shown in table 1.
Comparative example 5 compared with example 1, step (3) did not react for 2 hours at 50-60 ℃ with stirring.
Verification example:
the plant protein adhesives prepared in the above examples 1-3 and comparative examples 1-3 are respectively adopted to press three-layer plywood, the thickness of the birch veneer is about 1.6mm, the breadth is 450X 450mm, and the water content is about 10%. When the plywood is prepared, the double-sided glue coating amount is as follows: 300g/m 2 The pressure is as follows: 1.1MPa, and the hot pressing time is as follows: 6.0 minutes, the hot pressing temperature is: at 140 ℃.
The wet-like gluing strength of the plywood is tested according to the requirements of II-type plywood in the national standard GB17657-2013 physical and chemical property experimental method for artificial boards and veneered artificial boards, and the test conditions are as follows: the test piece was immersed in hot water at 63. + -. 3 ℃ for 3 hours and then cooled at room temperature for 10 minutes. The results of testing the plywood properties of examples 1-3 and comparative examples 1-3 are shown in table 2.
The result shows that the plywood prepared by the modified vegetable protein adhesive meets the requirements of national standard II type plywood, and the performance of the plywood is superior to that of unmodified vegetable protein adhesive.
TABLE 1 adhesive Performance index
Reference standard: national standard GB14074-2006 Wood adhesive and resin inspection method thereof.
As can be seen from table 1: the modified vegetable protein adhesive disclosed by the invention has proper viscosity, the storage period and the working life both meet the production requirements of artificial boards, and the glue solution does not contain free formaldehyde.
Table 2 plywood bond strength test results
Reference standard: the national standard GB17657-2013 physicochemical property experimental method for artificial boards and veneer artificial boards.
As can be seen from table 2: the plywood prepared by the vegetable protein adhesive prepared in the examples 1-3 of the invention can meet the requirements of national standard II type plates, while the plywood prepared by the adhesive prepared in the comparative examples 1-3 does not meet the requirements of the national standard.
Therefore, the raw materials of the components of the modified vegetable protein adhesive and the preparation method are an organic whole, and the performance of the prepared adhesive can be obviously reduced by reducing or changing the raw material composition or reducing a certain step in the preparation method.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. The modified vegetable protein adhesive is characterized by being prepared from the following raw materials in parts by weight: 150-250 parts of plant protein powder, 600-900 parts of deionized water, 100-150 parts of silkworm cocoon, 5-10 parts of alkaline regulator and 30-50 parts of protein denaturant;
the protein denaturant is one or more of urea, sodium dodecyl benzene sulfonate, guanidine hydrochloride and sodium dodecyl sulfate;
the modified vegetable protein adhesive is prepared by the following method:
(1) Cleaning silkworm cocoon with clear water, drying, grinding, and sieving to obtain silkworm cocoon powder;
(2) Adding vegetable protein powder, deionized water and a protein denaturant into a reaction kettle, and stirring at 50-60 ℃ to obtain a reaction mixture; stirring for 1-2 hours at a speed of 500-800 r/min;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture prepared in the step (2), then adding an alkaline regulator, heating to 50-60 ℃, and continuously stirring; stirring for 1-2 hours at a speed of 500-800 r/min;
(4) And after the reaction is finished, cooling to obtain the vegetable protein adhesive.
2. The modified vegetable protein adhesive as claimed in claim 1, wherein: the plant protein powder is one or more of bean protein powder, cottonseed protein powder, corn protein powder and wheat protein powder.
3. The modified vegetable protein adhesive as set forth in claim 1, wherein: the alkaline regulator is one or more of sodium hydroxide, potassium hydroxide and ammonia water.
4. A process for the preparation of a modified vegetable protein adhesive according to any one of claims 1 to 3, characterized in that it comprises the following steps:
(1) Cleaning silkworm cocoon with clear water, drying, grinding, and sieving to obtain silkworm cocoon powder;
(2) Adding vegetable protein powder, deionized water and a protein denaturant into a reaction kettle, and stirring at 50-60 ℃ to obtain a reaction mixture;
(3) Adding the silkworm cocoon powder obtained in the step (1) into the reaction mixture prepared in the step (2), then adding an alkaline regulator, heating to 50-60 ℃, and continuously stirring;
(4) After the reaction is finished, cooling to obtain the vegetable protein adhesive;
in the step (2), the stirring time is 1-2 hours, and the stirring speed is 500-800 r/min;
in the step (3), the stirring time is 1-2 hours, and the stirring speed is 500-800r/min.
5. The method of manufacturing according to claim 4, characterized in that: in the step (1), the screening is performed by a screen of 200 meshes or more.
6. Use of the modified vegetable protein adhesive of any one of claims 1-3 in the preparation of artificial boards.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114032064A (en) * | 2021-12-15 | 2022-02-11 | 广东工业大学 | Vegetable protein composite adhesive as well as preparation method and application thereof |
| CN114479761B (en) * | 2022-01-28 | 2023-03-28 | 南京林业大学 | Cottonseed protein-based environment-friendly adhesive for plywood and preparation method and application thereof |
| CN114702936B (en) * | 2022-05-18 | 2023-10-24 | 广西至善新材料科技有限公司 | Water-based adhesive and preparation method and application thereof |
| CN115772376B (en) * | 2022-11-30 | 2024-04-05 | 浙江理工大学 | Preparation method of environment-friendly glue based on sericin-WPU-polyamide |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010100569A2 (en) * | 2009-01-23 | 2010-09-10 | Biology Centre As Cr, V.V.I. | Natural biodegradable adhesive from the silk |
| CN103627367A (en) * | 2013-11-29 | 2014-03-12 | 郝飞麟 | Environment-friendly adhesive as well as preparation method and application thereof |
| CN104263256A (en) * | 2014-08-29 | 2015-01-07 | 湖州天鑫皮革涂饰剂厂 | Flocking adhesive and preparation method thereof |
| WO2019146761A1 (en) * | 2018-01-26 | 2019-08-01 | 小島プレス工業株式会社 | Flocked product and production method therefor |
| CN110079270A (en) * | 2019-05-13 | 2019-08-02 | 北京林业大学 | A kind of fibre modification soybean protein base adhesive of wood-based plate and preparation method thereof |
| CN112587715A (en) * | 2021-01-08 | 2021-04-02 | 成都煌泓亢环保科技有限公司 | Preparation method of high-adhesion medical composite adhesive |
-
2021
- 2021-07-08 CN CN202110774084.4A patent/CN113563841B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010100569A2 (en) * | 2009-01-23 | 2010-09-10 | Biology Centre As Cr, V.V.I. | Natural biodegradable adhesive from the silk |
| CN103627367A (en) * | 2013-11-29 | 2014-03-12 | 郝飞麟 | Environment-friendly adhesive as well as preparation method and application thereof |
| CN104263256A (en) * | 2014-08-29 | 2015-01-07 | 湖州天鑫皮革涂饰剂厂 | Flocking adhesive and preparation method thereof |
| WO2019146761A1 (en) * | 2018-01-26 | 2019-08-01 | 小島プレス工業株式会社 | Flocked product and production method therefor |
| CN110079270A (en) * | 2019-05-13 | 2019-08-02 | 北京林业大学 | A kind of fibre modification soybean protein base adhesive of wood-based plate and preparation method thereof |
| CN112587715A (en) * | 2021-01-08 | 2021-04-02 | 成都煌泓亢环保科技有限公司 | Preparation method of high-adhesion medical composite adhesive |
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