CN116572336B - Bamboo-wood board modifier and preparation method and application thereof - Google Patents
Bamboo-wood board modifier and preparation method and application thereof Download PDFInfo
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- CN116572336B CN116572336B CN202310416206.1A CN202310416206A CN116572336B CN 116572336 B CN116572336 B CN 116572336B CN 202310416206 A CN202310416206 A CN 202310416206A CN 116572336 B CN116572336 B CN 116572336B
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- 239000002023 wood Substances 0.000 title claims abstract description 51
- 239000003607 modifier Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 239000002105 nanoparticle Substances 0.000 claims abstract description 42
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 13
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 8
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 8
- IBGBGRVKPALMCQ-UHFFFAOYSA-N 3,4-dihydroxybenzaldehyde Chemical compound OC1=CC=C(C=O)C=C1O IBGBGRVKPALMCQ-UHFFFAOYSA-N 0.000 claims description 32
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 20
- PCYGLFXKCBFGPC-UHFFFAOYSA-N 3,4-Dihydroxy hydroxymethyl benzene Natural products OCC1=CC=C(O)C(O)=C1 PCYGLFXKCBFGPC-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 11
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001593 boehmite Inorganic materials 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 2
- 239000005751 Copper oxide Substances 0.000 claims description 2
- 229910000431 copper oxide Inorganic materials 0.000 claims description 2
- 229910052625 palygorskite Inorganic materials 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract 1
- 239000003063 flame retardant Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 230000004048 modification Effects 0.000 description 11
- 238000012986 modification Methods 0.000 description 11
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- 239000005011 phenolic resin Substances 0.000 description 6
- 229920001568 phenolic resin Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 241000219000 Populus Species 0.000 description 5
- 238000001723 curing Methods 0.000 description 5
- RGHHSNMVTDWUBI-UHFFFAOYSA-N 4-hydroxybenzaldehyde Chemical compound OC1=CC=C(C=O)C=C1 RGHHSNMVTDWUBI-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000008367 deionised water Substances 0.000 description 4
- 229910021641 deionized water Inorganic materials 0.000 description 4
- 238000007731 hot pressing Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 244000166124 Eucalyptus globulus Species 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 2
- 125000003172 aldehyde group Chemical group 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 244000302661 Phyllostachys pubescens Species 0.000 description 1
- 235000003570 Phyllostachys pubescens Nutrition 0.000 description 1
- 235000011609 Pinus massoniana Nutrition 0.000 description 1
- 241000018650 Pinus massoniana Species 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 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
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a bamboo-wood board modifier, a preparation method and application thereof, wherein the preparation raw materials of the bamboo-wood board modifier comprise: modified inorganic nano particles and paraformaldehyde, wherein phenolic hydroxyl groups are modified on the modified inorganic nano particles. The invention provides a plate modifier which can realize the enhancement of the flame retardant property and the mechanical property of a plate.
Description
Technical Field
The invention belongs to a bamboo-wood board modifier, and particularly relates to a bamboo-wood board modifier, a preparation method and application thereof.
Background
The wood and bamboo wood, such as poplar artificial forest, has the advantages of high yield, fast growth and the like, but has the defects of low wood density, poor mechanical strength, low surface hardness, low wear resistance, poor corrosion resistance and the like, limits the use of the wood and wood properties and decoration of the wood and bamboo wood are far different from those of natural forest wood. Therefore, chemical modification of the fast-growing wood is very necessary. Meanwhile, as eucalyptus and poplar are commonly used for preparing artificial boards, the artificial boards are inflammable and easy to mildew and decay although the physical and mechanical properties of the artificial boards are obviously changed.
In conclusion, the development of a bamboo-wood board modifier, a preparation method and application thereof, and the problem of effectively improving the physical and mechanical properties, flame retardance, antibacterial properties and the like of a rapid material is urgent.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the bamboo-wood board modifier which can realize the improvement of the flame retardance, the antibacterial property and the mechanical property of the artificial board.
According to an embodiment of the first aspect of the invention, the preparation raw materials of the bamboo-wood board modifier comprise: modified inorganic nanoparticles and paraformaldehyde;
the modified inorganic nano particles are modified with phenolic hydroxyl groups.
The reaction principle of the invention is as follows: the phenolic resin prepolymer is formed by modifying phenolic hydroxyl group inorganic nano particles and paraformaldehyde through chemical reaction, and is applied to wood modification, the inorganic nano particles have the functions of flame retardance, fire prevention, antibiosis, mildew prevention and corrosion prevention and self cleaning, on the other hand, the phenolic resin prepolymer is prepared by introducing phenolic hydroxyl group inorganic nano particles to replace phenol, so that the mechanical property of the phenolic resin obtained by the reaction of the modified inorganic nano particles and paraformaldehyde is remarkably enhanced, after the phenolic resin prepolymer is immersed into wood, the phenolic resin prepolymer is subjected to thermal curing, polymerization reaction is carried out between the prepolymer, condensation reaction is carried out on the prepolymer and active groups such as hydroxyl groups in the chemical components of the cell walls of the board, and the like, so that the phenolic resin prepolymer can be firmly polymerized with the board components, hydrophilic groups and active reactive groups in the board components can be effectively reduced, the water absorption of modified wood can be reduced, and the aging resistance of the wood can be improved.
According to some embodiments of the invention, the preparation raw materials of the modified inorganic nanoparticle include: inorganic nanoparticles, p-toluene sulfonic acid and 3, 4-dihydroxybenzaldehyde.
The 3, 4-dihydroxybenzaldehyde is a compound with aldehyde groups and two phenolic hydroxyl groups, and under the action of p-toluenesulfonic acid, the hydroxyl groups on the surfaces of inorganic nano particles are promoted to react with the 3, 4-dihydroxybenzaldehyde through an intermediate reaction, the aldehyde groups and the hydroxyl groups are subjected to a condensation reaction, so that the phenolic hydroxyl groups are modified on the surfaces of the nano particles, the activity of the o-phenolic hydroxyl groups is high, and the inorganic particles have the corresponding activity for participating in subsequent reactions.
According to some embodiments of the invention, the preparation raw materials of the modified inorganic nanoparticle include: inorganic nanoparticles, p-toluene sulfonic acid, dimethyl sulfoxide and 3, 4-dihydroxybenzaldehyde.
According to some embodiments of the invention, the molar ratio of the inorganic nanoparticles, the p-toluene sulfonic acid, and the 3, 4-dihydroxybenzaldehyde is from 0.3 to 0.6:1 to 1.8:0.8 to 1.5.
According to some embodiments of the invention, the molar ratio of the inorganic nanoparticles, the p-toluene sulfonic acid, the 3, 4-dihydroxybenzaldehyde, and the dimethyl sulfoxide is 0.3 to 0.6:1 to 1.8:0.8 to 1.5:3 to 4.
According to some embodiments of the invention, the method of preparing the modified inorganic nanoparticle comprises: and dispersing the inorganic nano particles, the p-toluenesulfonic acid and the 3, 4-dihydroxybenzaldehyde, and then reacting.
According to some embodiments of the invention, the temperature of the reaction in the preparation of the modified inorganic nanoparticle is 70-80 ℃.
According to some embodiments of the invention, the reaction time is 4-12 hours in the preparation of the modified inorganic nanoparticle.
According to some preferred embodiments of the present invention, the method for preparing the modified inorganic nanoparticle comprises: mixing the inorganic nano particles, the p-toluenesulfonic acid, the 3, 4-dihydroxybenzaldehyde and dimethyl sulfoxide, heating to 70-80 ℃ for reaction for 4-12h, stopping the reaction, cooling to room temperature, dripping the reaction liquid obtained by the reaction into deionized water, and washing the product by using the deionized water in a reverse manner to finally obtain the 3, 4-dihydroxybenzaldehyde modified nano particles, namely the phenolic hydroxyl-containing nano particles.
According to some embodiments of the invention, the inorganic nanoparticles comprise at least two of copper oxide, silver, titanium dioxide, zinc oxide, montmorillonite, boehmite, and palygorskite.
According to some embodiments of the invention, the inorganic nanoparticles have a particle size of no greater than 100nm.
According to some embodiments of the invention, the bamboo-wood board modifier further comprises resorcinol and ammonia.
According to some embodiments of the invention, the molar ratio of the modified inorganic nanoparticle, the paraformaldehyde, the resorcinol and the aqueous ammonia is from 0.5 to 1:0.8 to 1.4:0.6 to 1.2:0.2 to 0.4.
According to a second aspect of the present invention, a method for preparing the board modifier includes: and mixing and reacting the preparation raw materials of the plate modifier.
According to some embodiments of the invention, the raw materials for preparing the bamboo-wood board modifier are mixed and reacted and then subjected to pressurized impregnation.
According to the artificial board of the embodiment of the third aspect of the invention, the preparation raw materials of the artificial board comprise the board modifier.
According to some embodiments of the invention, the artificial board comprises at least one of a composite board and a veneer.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are shown, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following examples are illustrative only and are not to be construed as limiting the invention.
Example 1
The embodiment discloses a preparation method of a bamboo-wood board modifier, which comprises the following specific steps:
mixing nano boehmite, p-toluenesulfonic acid, 3, 4-dihydroxybenzaldehyde and dimethyl sulfoxide (molar ratio of 0.4:1:1.2:4), heating to 70 ℃ for reaction for 4 hours, stopping the reaction, cooling to room temperature, dripping the reaction liquid obtained by the reaction into deionized water, and washing the product by the deionized water in a reverse way to obtain the 3, 4-dihydroxybenzaldehyde modified nano particles, namely the phenolic hydroxyl-containing nano particles. And mixing the modified inorganic nano particles, paraformaldehyde, resorcinol and ammonia water according to a certain proportion (the molar ratio is 0.8:1.1:0.9:0.3) to obtain the plate modifier.
Example 2
This example differs from example 1 in that the reaction temperature is 80℃and otherwise corresponds to example 1.
Example 3
This example differs from example 1 in that the nanoboehmite, p-toluene sulfonic acid, 3, 4-dihydroxybenzaldehyde and dimethyl sulfoxide are mixed (molar ratio 0.4:1:0.8:4), the remaining conditions being the same.
Example 4
The invention provides a modification method of poplar, which is different from example 1 in that nano silver and montmorillonite are selected as inorganic raw materials, and the other steps are the same as example 1.
Example 5
The difference between this example and example 1 is that moso bamboo is used as the modification target, and the other is the same as example 1.
Example 6
The difference between this example and example 1 is that masson pine is used as the modification target, and the other is the same as example 1.
Comparative example 1
The comparative example discloses a preparation method of a bamboo-wood board modifier and modified poplar wood prepared by taking the board modifier as a raw material, and the comparative example is different from example 1 in that inorganic nano particles have no modified phenolic hydroxyl groups, and the rest conditions are the same.
Comparative example 2
The comparative example discloses a preparation method of a bamboo-wood board modifier, and the comparative example is different from example 1 in that inorganic nanoparticles are modified by KH550, and the rest conditions are the same.
Comparative example 3
This comparative example discloses a method for preparing a modifier for bamboo and wood boards, which is different from example 1 in that o-toluenesulfonic acid and p-hydroxybenzaldehyde are used to replace p-toluenesulfonic acid and 3, 4-dihydroxybenzaldehyde, and the rest conditions are the same.
Comparative example 4
The comparative example discloses a preparation method of a bamboo and wood board modifier, and the comparative example is different from example 1 in that inorganic nanoparticles are not applied, phenol is directly applied to replace the nanoparticles, no surface modification process and reaction are carried out, and the rest conditions are the same.
Test example 1
The test example tests the properties of the obtained board modifiers of examples 1 to 6 and comparative examples 1 to 4 applied to bamboo wood, and specifically comprises the following steps:
a1: the plate modifiers in the examples and the comparative examples are respectively and uniformly mixed with water according to a mass concentration of 1:3 (25 percent);
a2: drying wood until the water content is 5%, placing the wood into a modification tank, vacuumizing the modification tank to-0.089 MPa, and keeping for 50min;
a3: stopping vacuumizing, and sucking the plate modifier with the mass concentration of 25% into a modification tank;
a4: pressurizing the wood in the modification tank, maintaining at 0.8MPa for 50min, and extracting the excessive board modifier after the treatment is finished;
a5: taking out the modified poplar, and curing for 2 hours at 130 ℃ in a heating device to obtain the modified wood.
The test results are shown in table 1:
table 1 performance test of panel modifiers in bamboo wood modified materials
The inorganic particles in comparative examples 1 and 2 do not participate in the reaction, a large amount of chemical reaction substances remain, the subsequent wood structure is damaged by unreacted chemical reagents, and the mechanical strength and performance are affected, so that the flame retardance, the antibacterial property and the mechanical performance of the obtained plate are reduced. Comparative example 3 the performance of example 1 was not obtained by substituting o-toluenesulfonic acid and p-hydroxybenzaldehyde for p-toluenesulfonic acid and 3, 4-dihydroxybenzaldehyde, indicating that the same effect could not be obtained by simply substituting similar substances, and that the expected chemical reaction could not occur, giving the final reaction product.
Comparative example 4 is to replace the inorganic nanoparticle having phenolic hydroxyl groups with phenol, which can participate in the chemical reaction herein to form a certain strength, but since the wood modification and the resin synthesis and curing of the present invention are one-step processes, all performed inside the wood, chemical monomeric phenol has a destructive effect on the wood structure during the curing process, and thus the corresponding performance is lowered.
Test example 2
The test example tests the performance of the board modifier obtained in the example 1 applied to a eucalyptus veneer (the length, width and thickness of the dimension are 600 x 2 mm) and then hot pressed to obtain a three-layer artificial board, wherein the hot pressing process comprises the following steps: commercially available urea-formaldehyde resin and sizing amount of 210g/m 2 (double-sided), hot-pressing temperature 125 ℃, hot-pressing time 6min and hot-pressing pressure 1.2MPa. The test results are shown in table 2:
table 2 performance test of panel modifiers in modified eucalyptus plywood
In the invention, the reason for improving the water resistance of the three-layer artificial board after the modifier is applied is that the water resistance of the wood is improved by the early modification, and in the boiling process of the boiling water, the adhesive layer can be effectively isolated from the boiling water to a certain extent, so that the adhesive layer is isolated from the boiling water in a certain time, the boiling water resistance of the adhesive layer is improved, and the boiling water resistance bonding strength is further enhanced; the reason for improving the dry bonding strength is that a large number of organic groups are modified on the surface of the wood after modification, can participate in the curing reaction of the adhesive in the curing process of the adhesive to form covalent bond connection, and the large number of organic groups have high compatibility with the cured adhesive system and can be connected through hydrogen bonds, van der Waals force and the like, so that better bonding is formed between the wood and the adhesive, and the dry bonding strength of the wood is obviously improved.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (7)
1. The bamboo-wood board modifier is characterized by comprising the following raw materials:
modified inorganic nanoparticles, paraformaldehyde, resorcinol and ammonia water;
phenolic hydroxyl groups are modified on the modified inorganic nano particles;
the preparation method of the modified inorganic nano particle comprises the following steps: dispersing inorganic nano particles, p-toluenesulfonic acid and 3, 4-dihydroxybenzaldehyde, and reacting.
2. The bamboo-wood panel modifier according to claim 1, wherein the molar ratio of the inorganic nanoparticles, the p-toluenesulfonic acid and the 3, 4-dihydroxybenzaldehyde is 0.3 to 0.6: 1-1.8: 0.8 to 1.5.
3. The bamboo-wood panel modifier according to claim 1, wherein the temperature of the reaction is 70-80 ℃; the reaction time is 4-12h.
4. The bamboo-wood panel modifier of claim 1, wherein the inorganic nanoparticles comprise at least one of copper oxide, silver, titanium dioxide, zinc oxide, montmorillonite, boehmite, and palygorskite.
5. The bamboo-wood panel modifier according to claim 1, wherein the molar ratio of the modified inorganic nanoparticles, the paraformaldehyde, the resorcinol and the ammonia water is 0.5 to 1: 0.8-1.4: 0.6-1.2: 0.2 to 0.4.
6. A method for preparing the bamboo-wood board modifier according to any one of claims 1 to 5, comprising: and mixing and reacting the preparation raw materials of the plate modifier.
7. An artificial board, characterized in that the raw materials for preparing the artificial board comprise the bamboo-wood board modifier as set forth in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310416206.1A CN116572336B (en) | 2023-04-18 | 2023-04-18 | Bamboo-wood board modifier and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310416206.1A CN116572336B (en) | 2023-04-18 | 2023-04-18 | Bamboo-wood board modifier and preparation method and application thereof |
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| Publication Number | Publication Date |
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| CN116572336A CN116572336A (en) | 2023-08-11 |
| CN116572336B true CN116572336B (en) | 2024-03-19 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826119A (en) * | 2015-04-16 | 2015-08-12 | 厦门大学 | Preparation method of pH and glucose dual-sensitive mesoporous silica@polymer drug carrier |
| CN106393361A (en) * | 2016-10-11 | 2017-02-15 | 阜阳市伟叶家具有限公司 | Fast growing wood modifier capable of achieving hydrophobicity synergetic enhancement through alkyl ketene dimers and nano titanium dioxide |
| CN109593234A (en) * | 2018-12-29 | 2019-04-09 | 厦门大学 | A kind of borate polymer@hexagonal boron nitride anti-flaming nano particle and its preparation method and application with core-shell structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1645594A1 (en) * | 2003-07-10 | 2006-04-12 | Asahi Organic Chemicals Industry Co., Ltd. | Phenol resin composition |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104826119A (en) * | 2015-04-16 | 2015-08-12 | 厦门大学 | Preparation method of pH and glucose dual-sensitive mesoporous silica@polymer drug carrier |
| CN106393361A (en) * | 2016-10-11 | 2017-02-15 | 阜阳市伟叶家具有限公司 | Fast growing wood modifier capable of achieving hydrophobicity synergetic enhancement through alkyl ketene dimers and nano titanium dioxide |
| CN109593234A (en) * | 2018-12-29 | 2019-04-09 | 厦门大学 | A kind of borate polymer@hexagonal boron nitride anti-flaming nano particle and its preparation method and application with core-shell structure |
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