CN115322742B - Soybean adhesive enhanced by keratin and calcium phosphate oligomer and preparation method thereof - Google Patents
Soybean adhesive enhanced by keratin and calcium phosphate oligomer and preparation method thereof Download PDFInfo
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- CN115322742B CN115322742B CN202110511891.7A CN202110511891A CN115322742B CN 115322742 B CN115322742 B CN 115322742B CN 202110511891 A CN202110511891 A CN 202110511891A CN 115322742 B CN115322742 B CN 115322742B
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- keratin
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- 239000000853 adhesive Substances 0.000 title claims abstract description 42
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 42
- 102000011782 Keratins Human genes 0.000 title claims abstract description 28
- 108010076876 Keratins Proteins 0.000 title claims abstract description 28
- 239000001506 calcium phosphate Substances 0.000 title claims abstract description 27
- 229910000389 calcium phosphate Inorganic materials 0.000 title claims abstract description 27
- 235000011010 calcium phosphates Nutrition 0.000 title claims abstract description 27
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 title claims abstract description 27
- 235000010469 Glycine max Nutrition 0.000 title claims abstract description 22
- 244000068988 Glycine max Species 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 108010073771 Soybean Proteins Proteins 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 15
- 235000019710 soybean protein Nutrition 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 13
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 239000003431 cross linking reagent Substances 0.000 claims description 10
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 10
- 239000004593 Epoxy Substances 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 241000287828 Gallus gallus Species 0.000 claims description 7
- 210000003746 feather Anatomy 0.000 claims description 7
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 239000002612 dispersion medium Substances 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000004202 carbamide Substances 0.000 claims description 5
- 238000000502 dialysis Methods 0.000 claims description 5
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 5
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000000908 ammonium hydroxide Substances 0.000 claims description 3
- LLSDKQJKOVVTOJ-UHFFFAOYSA-L calcium chloride dihydrate Chemical compound O.O.[Cl-].[Cl-].[Ca+2] LLSDKQJKOVVTOJ-UHFFFAOYSA-L 0.000 claims description 3
- 229940052299 calcium chloride dihydrate Drugs 0.000 claims description 3
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims description 3
- 235000020679 tap water Nutrition 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000004108 freeze drying Methods 0.000 claims description 2
- 238000010907 mechanical stirring Methods 0.000 claims description 2
- 239000011120 plywood Substances 0.000 abstract description 5
- 238000004132 cross linking Methods 0.000 abstract description 4
- 125000003396 thiol group Chemical group [H]S* 0.000 abstract description 4
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001424 calcium ion Inorganic materials 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000004513 sizing Methods 0.000 abstract description 3
- 229910019142 PO4 Inorganic materials 0.000 abstract description 2
- 125000003277 amino group Chemical group 0.000 abstract description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 2
- 239000010452 phosphate Substances 0.000 abstract description 2
- -1 phosphate radical ion Chemical class 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 229940001941 soy protein Drugs 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 1
- 241000219000 Populus Species 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013257 coordination network Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
-
- 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
- C09J11/08—Macromolecular additives
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/325—Calcium, strontium or barium phosphate
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention discloses a keratin and calcium phosphate oligomer reinforced soybean adhesive and a preparation method thereof, wherein the adhesive is prepared from the following raw materials: the main agent is soybean protein powder, the reinforcing agent is keratin powder, and the filler is calcium phosphate. According to the invention, the sulfhydryl group on keratin and the sulfhydryl group of soybean protein molecule are cross polymerized to form a novel disulfide bond covalent cross-linked network, the phosphate radical ion of the calcium phosphate filler reacts with the amino group on the soybean protein, the calcium ion reacts with the carboxyl group and is fused into the cross-linked structure to form a mineralized structure, the water-resistant cementing property of the adhesive is further improved through stress conduction and dispersion, and the prepared adhesive has high cross-linking density, good water-resistant cementing property and good fluidity, can meet the water-resistant and sizing process requirements of the plywood adhesive, has low cost, and can be popularized and applied.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and in particular relates to a keratin and calcium phosphate oligomer reinforced soybean adhesive and a preparation method thereof.
Background
Aldehyde adhesives are widely used in the wood industry, accounting for over 90% of the total yield of the adhesive, and produce unavoidable formaldehyde pollution. The development of renewable raw materials into high-added-value adhesives has broad prospects. Soy protein has shown great potential in the wood adhesive industry due to its low cost, renewable and highly processable nature. But has poor water resistance and low mechanical strength, and limits the application and popularization of the soybean protein as a wood adhesive.
At present, a number of successful modification strategies have been reported, in which it is effective to build a tight crosslinked network by adding petroleum-based crosslinkers to react with reactive groups in the soy protein molecule. However, the efficient cross-linking agent still depends on petroleum resources, and the addition amount is excessive, which is contrary to the low-cost and environment-friendly concepts, so that the search for a new green reinforcing strategy for reinforcing the soybean adhesive is particularly important.
Disclosure of Invention
The invention aims to provide the soybean adhesive with enhanced keratin and calcium phosphate oligomer and the preparation method thereof, and the soybean adhesive has the advantages of high crosslinking density, good water-resistant cementing property and good fluidity, can meet the water-resistant and sizing process requirements of the plywood adhesive, has low cost, and can be popularized and applied.
The technical solution for realizing the purpose of the invention is as follows:
a keratin and calcium phosphate oligomer reinforced soybean adhesive is prepared from the following raw materials: the main agent is soybean protein powder, the reinforcing agent is keratin powder, and the filler is calcium phosphate.
Further, the dispersion medium water is normal tap water or softened water.
Further, the soybean adhesive is prepared from the following raw materials in parts by weight: 20-30 parts of main agent, 70 parts of dispersion medium water, 1-3 parts of reinforcing agent, 2 parts of epoxy cross-linking agent and 1-4 parts of filler.
The preparation method of the keratin and calcium phosphate oligomer reinforced soybean adhesive comprises the following steps:
weighing the raw material components according to the weight ratio, and stirring until the raw material components are uniformly dispersed.
Mechanical stirring is further adopted for 15min until the dispersion is uniform.
Further, the preparation method of the keratin powder comprises the following steps:
washing chicken feather in n-hexane to remove oil, soaking in water, adding urea, sodium sulfide and sodium dodecyl sulfate to obtain a mixture, stirring the mixture, dialyzing with dialysis bag, and freeze drying to obtain keratin powder.
Further, the preparation method specifically comprises the following steps:
5 parts by weight of chicken feather is washed in n-hexane for 2 hours to remove grease, then immersed in 100 parts by weight of water, 7M urea, 0.06M sodium sulfide and 0.8g sodium dodecyl sulfate are added to obtain a mixture, the mixture is stirred at 60 ℃ for 8 hours, and then dialyzed for 3 days by 3500D dialysis bags and freeze-dried to obtain keratin powder.
Further, the preparation method of the epoxy cross-linking agent comprises the following steps:
stirring epichlorohydrin and ammonia water for 24 hours at room temperature in a molar ratio of 5:1, then continuing stirring at 60 ℃ for 2 hours, cooling to room temperature, adding excessive 50wt% NaOH, stirring for 2 hours, and finally vacuum distilling to remove residual epichlorohydrin and ammonium hydroxide to obtain the light yellow viscous liquid epoxy cross-linking agent.
Further, the preparation method of the calcium phosphate comprises the following steps: 7.056g of calcium chloride dihydrate and 2.508mL of phosphoric acid are dissolved in 1L of ethanol, 133.074mL of triethylamine is added, stirring is carried out at room temperature for 12h, a precipitate is obtained by centrifugation, and excess triethylamine is removed by washing with ethanol, so that the calcium phosphate is obtained.
Compared with the prior art, the invention has the remarkable advantages that:
(1) According to the invention, chicken feather waste is developed into a more valuable material, so that the environmental pollution caused by burying and incinerating chicken feather is reduced, and the waste resource is efficiently utilized;
(2) The invention effectively reduces the viscosity of the adhesive system and improves the fluidity and wettability of the gluing process;
(3) The soybean protein adhesive is free from toxic substances and toxic substances released, low in cost and applicable to industrialization;
(4) The calcium phosphate oligomer is combined with organic matters, and is connected with smooth stress transmission through the inorganic nanometer reinforcing body to form a soft and hard coordination network, so that the calcium phosphate composite material has excellent mechanical strength and water resistance.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to examples. It is to be understood that the following examples are given for illustrative purposes only and are not intended to limit the scope of the present invention. Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention.
The experimental methods used in the examples below were all conventional, unless otherwise specified.
Materials, reagents and the like used in the examples described below are commercially available unless otherwise specified.
The adhesive comprises the following components in parts by weight: 20-30 parts of main agent, 70 parts of dispersion medium water, 1-3 parts of reinforcing agent, 2 parts of epoxy cross-linking agent and 1-4 parts of filler.
Wherein the main agent is soybean protein powder, which is a commercial product and can be purchased from Shandong Yuwang Limited company.
Wherein, the reinforcing agent is keratin powder, and the preparation process comprises the following steps: 5 parts by weight of chicken feather are washed in n-hexane for 2 hours to remove grease, and then immersed in 100 parts by weight of water, 7M urea, 0.06M sodium sulfide and 0.8g sodium dodecyl sulfate are added. The mixture was stirred at 60 ℃ for 8 hours, then dialyzed against 3500D dialysis bags for 3 days and freeze-dried to obtain keratin powder.
Wherein, the epoxy cross-linking agent is self-made epoxy compound, and the preparation process is as follows: the epichlorohydrin and ammonia were stirred at room temperature for 24h in a molar ratio of 5:1, and then stirred at 60℃for a further 2h. After cooling to room temperature, adding an excessive amount of 50wt% NaOH, stirring for 2 hours, and finally vacuum distilling to remove residual epichlorohydrin and ammonium hydroxide, thereby obtaining the light yellow viscous liquid cross-linking agent.
Wherein, the filler is calcium phosphate, and the preparation process comprises the following steps: 7.056g of calcium chloride dihydrate and 2.508mL of phosphoric acid were dissolved in 1L of ethanol, and 133.074mL of triethylamine was added thereto and stirred at room temperature for 12 hours. The precipitate was obtained by centrifugation and excess triethylamine was removed by washing with ethanol.
The sulfhydryl group on keratin and the sulfhydryl group of soybean protein molecule are cross polymerized to form a new disulfide bond covalent crosslinking network, the phosphate radical ion of calcium phosphate filler reacts with amino group on soybean protein, the calcium ion reacts with carboxyl group, and the calcium ion is fused into the crosslinking structure to form a mineralization structure, so that the water-resistant cementing property of the adhesive is further improved through stress conduction and dispersion.
The dispersion medium water is selected from common tap water or softened water.
The preparation method of the keratin and calcium phosphate oligomer reinforced soybean adhesive comprises the following steps:
weighing the components according to the weight ratio, and mechanically stirring for 15min until the components are uniformly dispersed.
Example 1
The embodiment provides a preparation method of a soybean protein adhesive, which comprises the following steps of:
the above raw materials were prepared to obtain the keratin and calcium phosphate oligomer reinforced soybean adhesive of example 1.
Comparative examples 1 to 3
Comparative example 1 is a soybean adhesive prepared without reinforcing agent, comparative example 2 is a soybean adhesive prepared without filler, and comparative example 3 is a general E0-grade urea-formaldehyde resin adhesive, respectively, compared with example 1.
Three-layer plywood was prepared using the adhesives of inventive example 1 and comparative examples 1-3, respectively.
Poplar veneer: the water content is less than or equal to 10 percent; dimensions 40cm x 0.15cm.
The preparation process is as follows:
sizing: the glue coating amount is 180g/m 2 。
Pressure, temperature, time: 1MPa,120 ℃ for 6 minutes.
The performance of the transverse spliced products was tested according to GB/T17657-1999 test method for physicochemical Properties of Artificial Board and veneered Artificial Board, and the test results are shown in Table 1.
Table 1 plywood bonding strength meter
Experimental results show that the bonding strength of the soybean protein-based adhesive for preparing the plywood is detected according to II, the bonding strength is over 1.40MPa, the dry strength is over 3.00MPa, the bonding strength is obviously higher than that of comparative examples 1-3, and standard deviation calculation shows that the stability of the soybean protein adhesive for preparing the adhesive is obviously improved, and the reinforcing effect is obvious.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The soybean adhesive is characterized by being prepared from the following raw materials: the main agent is soybean protein powder, the reinforcing agent is keratin powder, and the filler is calcium phosphate;
the preparation method of the keratin and calcium phosphate oligomer reinforced soybean adhesive comprises the following steps:
weighing the raw material components according to the weight ratio, and stirring until the raw material components are uniformly dispersed;
the preparation method of the keratin powder comprises the following steps:
washing chicken feather in n-hexane to remove oil, immersing in water, adding urea, sodium sulfide and sodium dodecyl sulfate to obtain a mixture, stirring the mixture, dialyzing with a dialysis bag, and freeze-drying to obtain keratin powder;
the preparation method of the calcium phosphate comprises the following steps: 7.056g calcium chloride dihydrate and 2.508mL phosphoric acid are dissolved in 1L ethanol, then 133.074mL triethylamine is added, 12h is stirred at room temperature, a precipitate is obtained through centrifugation, and excess triethylamine is removed through ethanol washing, so that the calcium phosphate is obtained.
2. The keratin and calcium phosphate oligomer-reinforced soybean adhesive of claim 1, wherein the dispersion medium water is plain tap water or softened water.
3. The keratin and calcium phosphate oligomer reinforced soybean adhesive of claim 2, wherein the soybean adhesive is prepared from the following raw materials in parts by weight: 20-30 parts of main agent, 70 parts of dispersion medium water, 1-3 parts of reinforcing agent, 2 parts of epoxy cross-linking agent and 1-4 parts of filler.
4. The keratin and calcium phosphate oligomer reinforced soybean adhesive of claim 1, wherein mechanical stirring is employed for 15min to uniformly disperse.
5. The keratin and calcium phosphate oligomer-reinforced soybean adhesive according to claim 1, wherein the preparation method specifically comprises:
5 parts by weight of chicken feather is washed in n-hexane for 2 hours to remove grease, then immersed in 100 parts by weight of water, 7M urea, 0.06M sodium sulfide and 0.8g sodium dodecyl sulfate are added to obtain a mixture, the mixture is stirred at 60 ℃ for 8 hours, and then dialyzed for 3 days by 3500D dialysis bags and freeze-dried to obtain keratin powder.
6. The keratin and calcium phosphate oligomer-reinforced soybean adhesive according to claim 1 or 4, wherein the epoxy-based crosslinking agent is prepared by the following method:
stirring epichlorohydrin and ammonia water for 24 hours at room temperature in a molar ratio of 5:1, then continuing stirring at 60 ℃ for 2 hours, cooling to room temperature, adding excessive 50wt% NaOH, stirring for 2 hours, and finally vacuum distilling to remove residual epichlorohydrin and ammonium hydroxide to obtain the light yellow viscous liquid epoxy cross-linking agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511891.7A CN115322742B (en) | 2021-05-11 | 2021-05-11 | Soybean adhesive enhanced by keratin and calcium phosphate oligomer and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110511891.7A CN115322742B (en) | 2021-05-11 | 2021-05-11 | Soybean adhesive enhanced by keratin and calcium phosphate oligomer and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115322742A CN115322742A (en) | 2022-11-11 |
| CN115322742B true CN115322742B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| Country | Link |
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| CN (1) | CN115322742B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108192564A (en) * | 2017-12-25 | 2018-06-22 | 北京林业大学 | A kind of dregs of beans albumen adhesive and preparation method thereof |
| CN111675998A (en) * | 2020-07-03 | 2020-09-18 | 德华兔宝宝装饰新材股份有限公司 | Bean pulp adhesive for blockboard and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10428254B2 (en) * | 2014-01-08 | 2019-10-01 | Cambond Limited | Bio-adhesives |
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- 2021-05-11 CN CN202110511891.7A patent/CN115322742B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108192564A (en) * | 2017-12-25 | 2018-06-22 | 北京林业大学 | A kind of dregs of beans albumen adhesive and preparation method thereof |
| CN111675998A (en) * | 2020-07-03 | 2020-09-18 | 德华兔宝宝装饰新材股份有限公司 | Bean pulp adhesive for blockboard and preparation method thereof |
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| CN115322742A (en) | 2022-11-11 |
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