CN105563570A - Preparation method of engineered wood - Google Patents
Preparation method of engineered wood Download PDFInfo
- Publication number
- CN105563570A CN105563570A CN201510994409.4A CN201510994409A CN105563570A CN 105563570 A CN105563570 A CN 105563570A CN 201510994409 A CN201510994409 A CN 201510994409A CN 105563570 A CN105563570 A CN 105563570A
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- parts
- solution
- veneer
- steps
- following
- Prior art date
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- 239000002023 wood Substances 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 42
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 177
- 238000011282 treatment Methods 0.000 claims abstract description 59
- 239000000853 adhesive Substances 0.000 claims abstract description 43
- 230000001070 adhesive effect Effects 0.000 claims abstract description 43
- 239000000843 powder Substances 0.000 claims abstract description 41
- 150000001875 compounds Chemical class 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims abstract description 25
- 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 claims abstract description 23
- 239000003063 flame retardant Substances 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 22
- -1 bis-azo compound Chemical class 0.000 claims abstract description 19
- 239000002028 Biomass Substances 0.000 claims abstract description 18
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 17
- 238000002791 soaking Methods 0.000 claims abstract description 16
- 238000004043 dyeing Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 239000000980 acid dye Substances 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 110
- 238000010438 heat treatment Methods 0.000 claims description 65
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 39
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 30
- 229920000858 Cyclodextrin Polymers 0.000 claims description 27
- 239000001116 FEMA 4028 Substances 0.000 claims description 27
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 27
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 27
- 229960004853 betadex Drugs 0.000 claims description 27
- 238000003763 carbonization Methods 0.000 claims description 26
- 239000001525 mentha piperita l. herb oil Substances 0.000 claims description 26
- 235000019477 peppermint oil Nutrition 0.000 claims description 26
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- 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 20
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000000126 substance Substances 0.000 claims description 19
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 17
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 17
- 241001330002 Bambuseae Species 0.000 claims description 17
- 229920000877 Melamine resin Polymers 0.000 claims description 17
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 17
- 239000011425 bamboo Substances 0.000 claims description 17
- 239000001913 cellulose Substances 0.000 claims description 17
- 229920002678 cellulose Polymers 0.000 claims description 17
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 17
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 15
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 15
- 239000004202 carbamide Substances 0.000 claims description 15
- 239000000975 dye Substances 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- 235000010980 cellulose Nutrition 0.000 claims description 13
- 239000002131 composite material Substances 0.000 claims description 12
- GAMYVSCDDLXAQW-AOIWZFSPSA-N Thermopsosid Natural products O(C)c1c(O)ccc(C=2Oc3c(c(O)cc(O[C@H]4[C@H](O)[C@@H](O)[C@H](O)[C@H](CO)O4)c3)C(=O)C=2)c1 GAMYVSCDDLXAQW-AOIWZFSPSA-N 0.000 claims description 11
- 238000004061 bleaching Methods 0.000 claims description 11
- 229930003944 flavone Natural products 0.000 claims description 11
- 150000002212 flavone derivatives Chemical class 0.000 claims description 11
- 235000011949 flavones Nutrition 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 11
- 239000002121 nanofiber Substances 0.000 claims description 11
- VHBFFQKBGNRLFZ-UHFFFAOYSA-N vitamin p Natural products O1C2=CC=CC=C2C(=O)C=C1C1=CC=CC=C1 VHBFFQKBGNRLFZ-UHFFFAOYSA-N 0.000 claims description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 10
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 239000011259 mixed solution Substances 0.000 claims description 10
- 239000005543 nano-size silicon particle Substances 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 9
- 239000001257 hydrogen Substances 0.000 claims description 9
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- 239000011032 tourmaline Substances 0.000 claims description 9
- 229940070527 tourmaline Drugs 0.000 claims description 9
- 229910052613 tourmaline Inorganic materials 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 8
- 229920000587 hyperbranched polymer Polymers 0.000 claims description 8
- 229920000962 poly(amidoamine) Polymers 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 239000002516 radical scavenger Substances 0.000 claims description 8
- 230000002378 acidificating effect Effects 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- UBIJTWDKTYCPMQ-UHFFFAOYSA-N hexachlorophosphazene Chemical compound ClP1(Cl)=NP(Cl)(Cl)=NP(Cl)(Cl)=N1 UBIJTWDKTYCPMQ-UHFFFAOYSA-N 0.000 claims description 6
- LMYRWZFENFIFIT-UHFFFAOYSA-N toluene-4-sulfonamide Chemical compound CC1=CC=C(S(N)(=O)=O)C=C1 LMYRWZFENFIFIT-UHFFFAOYSA-N 0.000 claims description 6
- RDGCTFHHAMLOSI-UHFFFAOYSA-M (3-chloro-3-hydroxypropyl)-triethylazanium;chloride Chemical compound [Cl-].CC[N+](CC)(CC)CCC(O)Cl RDGCTFHHAMLOSI-UHFFFAOYSA-M 0.000 claims description 5
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims description 5
- 229920002101 Chitin Polymers 0.000 claims description 5
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 5
- 229920000168 Microcrystalline cellulose Polymers 0.000 claims description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 5
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000004440 column chromatography Methods 0.000 claims description 5
- 229960001484 edetic acid Drugs 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 5
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 5
- 235000019813 microcrystalline cellulose Nutrition 0.000 claims description 5
- 239000008108 microcrystalline cellulose Substances 0.000 claims description 5
- 229940016286 microcrystalline cellulose Drugs 0.000 claims description 5
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims description 5
- 235000006408 oxalic acid Nutrition 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 238000009210 therapy by ultrasound Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 3
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002105 nanoparticle Substances 0.000 claims description 3
- 125000000664 diazo group Chemical group [N-]=[N+]=[*] 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 12
- 230000006870 function Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000000979 retarding effect Effects 0.000 abstract description 4
- 230000002195 synergetic effect Effects 0.000 abstract description 4
- 238000013329 compounding Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 229920001046 Nanocellulose Polymers 0.000 abstract 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000012128 staining reagent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 14
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 12
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000000746 purification Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 4
- 229910001863 barium hydroxide Inorganic materials 0.000 description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 4
- 239000012964 benzotriazole Substances 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 239000000920 calcium hydroxide Substances 0.000 description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 4
- QLPMKRZYJPNIRP-UHFFFAOYSA-M methyl(trioctyl)azanium;bromide Chemical compound [Br-].CCCCCCCC[N+](C)(CCCCCCCC)CCCCCCCC QLPMKRZYJPNIRP-UHFFFAOYSA-M 0.000 description 4
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical class CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 4
- 235000012431 wafers Nutrition 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- ZSTLPJLUQNQBDQ-UHFFFAOYSA-N azanylidyne(dihydroxy)-$l^{5}-phosphane Chemical class OP(O)#N ZSTLPJLUQNQBDQ-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 108010059892 Cellulase Proteins 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229940106157 cellulase Drugs 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003205 fragrance Substances 0.000 description 2
- 238000007306 functionalization reaction Methods 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000006679 Mentha X verticillata Nutrition 0.000 description 1
- 235000002899 Mentha suaveolens Nutrition 0.000 description 1
- 235000001636 Mentha x rotundifolia Nutrition 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 235000009984 Pterocarpus indicus Nutrition 0.000 description 1
- 244000086363 Pterocarpus indicus Species 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 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
- 229930013930 alkaloid Natural products 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
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- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- 230000001808 coupling effect Effects 0.000 description 1
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- 229930003935 flavonoid Natural products 0.000 description 1
- 235000017173 flavonoids Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
-
- 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
- B27K3/002—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising microorganisms
-
- 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
- B27K3/007—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process employing compositions comprising nanoparticles
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- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
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- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
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- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
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- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
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- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
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- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
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- C08G12/40—Chemically modified polycondensates
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- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
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- C08K5/00—Use of organic ingredients
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- 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
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C09J161/32—Modified amine-aldehyde condensates
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Abstract
The invention relates to a furniture plate and in particular to a preparation method of a engineered wood. The preparation method comprises the following steps: rotary cutting or slicing to prepare a blank veneer, and shearing the blank veneer into a needed size to obtain an A veneer; soaking the A veneer in a ternary compound solution prepared from a biomass nano cellulose solubilizer, a flame retardant and acid dyes of a bis-azo compound, and carrying out treatments including toughening, flame retarding and dyeing to obtain a B veneer; adding a formaldehyde decomposition powder in a modified MUF adhesive, uniformly stirring, and carrying out dispensing on the B veneer to obtain a C veneer; and carrying out cold pressing treatment on a C veneer assembly to prepare a D batten, and then sawing the D batten into the needed patterns and sizes to obtain a finished product. With the interface controlling design, the biomass nanotechnology and the synergistic compounding technology, the preparation method effectively solves the diversified matching problem of the flame retardant, a staining reagent and the adhesive, and realizes one material with multiple functions of the reconstituted decorative lumber manufacturing technology.
Description
Technical Field
The invention relates to a furniture board, in particular to a preparation method of a technical wood.
Background
Along with the increasingly prominent problem of global warming, the extremely severe climate is frequent, and low-carbon economy with the theme of 'low emission, low pollution and low energy consumption' is more and more accepted and advocated by people. Under such background conditions, the wood industry is playing an increasingly important role in developing low-carbon economy and coping with climate change by utilizing the inherent characteristics of 'green', 'environment-friendly' and 'clean'. The wood and wood products have good carbon fixing effect. As long as the wood and the wooden products are not rotten or burnt, the carbon fixing function of the wood and the wooden products can be stably continued for a long time. Some carbon fixing time can reach dozens of years and hundreds of years. Therefore, the use of the wood is increased, the service lives of the wood and the wood products are prolonged as far as possible, and the method has important significance for reducing energy consumption and increasing emission reduction. According to the calculation, the average amount of carbon dioxide 1470kg can be fixed and oxygen 1070kg can be released when the forest produces 1 ton of wood.
Wood is the only renewable natural resource among the four major building materials. The world forest is continuously reduced, according to the statistics of world forest resources by the food and agriculture organization of the United nations, the world forest area is about 40 hundred million hm2 in 2010, and the evaluation result in 1990 is about 40.8 hundred million hm 2. From the year change, the world forest area is reduced by about 400 ten thousand hm2 every year in 1990-2010. The protection of natural forests and the cultivation of artificial fast-growing forests are the best measures for maintaining ecological balance and meeting the requirements of people on wood, environmental protection measures are more and more in the world, and the coordination of the relationship between economic development and environmental protection becomes a main issue of concern in various countries.
Along with the gradual reduction of forest resources, the application amount of artificial fast growing woods is larger and larger, and along with the gradual reduction of natural precious tree species and woods, the fast growing woods are deeply processed to have the characteristics of the precious tree species, so that the consumption of the precious tree species and woods is reduced instead, and the method becomes a new problem for sustainable development of the wood processing industry. The recombined decorative material (commonly known as 'technical wood') is one of the important achievements of the new subject. The technical wood takes the artificial fast-growing wood as a raw material, the microstructure and the inherent properties of the wood are not damaged in the manufacturing process, all the natural properties of heat insulation, temperature regulation, humidity regulation and the like of the natural wood are completely reserved, a plurality of natural defects of the artificial fast-growing wood are overcome, the high-value utilization of the wood can be realized, and the technical innovation of the industry is led to achieve the sustainable development of the industry.
The recombined decorative material originally originated from the uk and italy in the 30 s of the 20 th century, and the sliced veneer was developed mainly by using raw wood. In 60 s, Italy and England research and development successively used rotary cut veneer of common tree as raw material, and through veneer bleaching, dyeing, wet adhering, cold pressing and slicing, artificial veneer is produced. In the early 70 s, companies such as Alpi, IPir and japan panasonic electrician in italy realized the industrial production of the technical wood, and a research and development center of the technical wood was provided to specially research and develop the technical technology of the technical wood production. In the early 80 s, China began to enter the technical wood industry. In recent thirty years, a great deal of research and industrial development has been conducted in italy and japan mainly around the manufacturing equipment of technical woods and the functionalization of products. Technical wood extends from the original single decorative veneer to technical wood sawn timber, composite floors, fire-proof boards, outdoor wood structure products to various artware, living goods and cultural and literature goods. Technical wood, as a renewable new environment-friendly material, has penetrated into various fields of people's lives.
The development of the heavy-duty decorative materials in China began in the 80 th of the 20 th century. In early 1980, the Uygur group started to research and develop technical wood, and in units such as Shanghai wood industry research institute and Shanghai furniture research institute, radial texture imitation rosewood veneer was produced in a trial mode, and in 1987, chord-direction texture and special-shape texture dyed artificial veneer was produced in a trial mode and put on the market in small batches. In 1988, the institute of Wood industry of China institute of forestry sciences developed wet and cold glue pressed battens. The 1996 Nanjing university of forestry and China forest academy of sciences jointly study the production technology of the artificial decorative veneer, and the artificial veneers with different textures and different colors are trial-produced.
Currently, functionalization is an important direction in the development of restructured decorative materials. CN103171014B (2015-4-15) discloses a preparation method of technical wood, however, the technical wood has high formaldehyde release amount, and dyeing agents are difficult to permeate, easy to run off, difficult to resist weather, poor in compatibility with water-based adhesives and serious in environmental pollution in the bleaching and dyeing process; because the fire retardant seriously interferes the color development of the coloring agent and the interface gluing of the coloring veneer, the technical wood is not subjected to fire retardant treatment, and the functionality of the technical wood is still to be improved.
Disclosure of Invention
The object of the present invention is to provide a method for preparing a technical wood which can solve the above problems.
The technical purpose of the invention is realized by the following technical scheme:
the preparation method of the technical wood is characterized by comprising the following steps:
(1) a blank single plate is manufactured by rotary cutting or slicing, and the blank single plate is cut into a required size to obtain a single plate A;
(2) carrying out soaking, toughening and flame-retardant dyeing treatment on the veneer A in a ternary compound solution consisting of a biomass nano-cellulose solubilizer, a flame retardant and an acid dye to obtain a veneer B;
the acid dye is a bisazo compound:
，
wherein,
m1, M2 are independently from each other hydrogen or an alkali metal;
r1 is hydrogen, C1-C4 alkyl or halogen;
r2 is hydrogen;
x is halogen;
y is-CH = CH 2;
(3) adding formaldehyde decomposition powder into the modified MUF adhesive, uniformly stirring, and performing adhesive distribution on the veneer B to obtain a veneer C;
(4) and (5) assembling the C veneer, performing cold pressing treatment to obtain a D batten, and sawing into required patterns and sizes to obtain a finished product.
The acid dye used on the technical wood has better weather resistance and wear resistance. According to the invention, through interface regulation design, biomass nanotechnology and synergistic compounding process, the problem of diversified matching of the flame retardant, the coloring agent and the adhesive is effectively solved, and one material with multiple functions of the manufacturing technology of the recombined decorative material is realized. According to the invention, through researching the photosensitive, temperature-sensitive and humidity-sensitive characteristics of the recombined decorative material and the color change mechanism and the flame retardant theory of the traditional dye, the high-fastness ternary compound fuel and the modified MUF adhesive are developed, and a novel process for synergetic dipping flame retardant treatment is researched, so that the weather-resistant and efficient flame retardant smoke suppression recombined decorative material is created. The recombined decorative material has low release amount of formaldehyde and VOC, the formaldehyde purification efficiency reaches over 75 percent, and the durability of the formaldehyde purification effect is more than 60 percent; the dyeing agent has good penetrating function, is not easy to run off, is weather-proof, has good compatibility with the water-based adhesive, and adopts biological environment-friendly dye, thereby greatly reducing pollution. And a flame retardant function is added in the modified MUF adhesive, so that the modified MUF adhesive and the ternary compound solution have good matching synergy.
Preferably, the preparation method of the modified MUF adhesive in the step (3) comprises the following steps:
A. putting 100 parts by weight of formaldehyde aqueous solution with mass concentration of 36.5-37.4wt%, 0.1-0.5 part by weight of alkaline substance solution with mass concentration of 30-50wt% and 0.3-0.6 part by weight of amino-terminated hyperbranched polymer PAMAM into a reaction kettle, and starting stirring;
B. adding 1-4 parts of hexachlorocyclotriphosphazene, heating to 50-55 ℃, adding 35-55 parts of melamine when the temperature is automatically raised to 75-85 ℃, and continuously heating to 90-95 ℃ for reaction to obtain a primary polycondensate;
C. adding 40-45 parts of melamine into the primary polycondensate, and adding 0.6-0.9 part of p-toluenesulfonamide to obtain a second polycondensate;
D. and cooling the second polycondensate to 70-75 ℃, adding 20-30 parts of urea, continuously reacting for 8-12min, and discharging the glue when the temperature is reduced to 30-50 ℃.
According to the invention, p-toluenesulfonamide and amino-terminated hyperbranched polymer PAMAM are adopted for modification, urea, melamine and formaldehyde are added in stages and in stages for multiple times, so that the content of an intermediate of the modified MUF resin adhesive in the preparation process is maximized, the strength and the wear resistance of the plate can be improved, and the service life of the plate can be prolonged; the MUF resin is modified by utilizing a large number of active functional groups in the amino-terminated hyperbranched polymer PAMAM and the highly branched characteristic of the structure of the amino-terminated hyperbranched polymer PAMAM, so that the performance of the resin is enhanced, the stability is improved, and the release amount of free formaldehyde is effectively controlled; the formaldehyde emission of the technical wood treated by the modified MUF adhesive is less than 0.2mg/L and reaches the four-star standard of Japan F;
meanwhile, urea, melamine and formaldehyde are used as matrixes, chlorine is easily substituted by utilizing the activity of phosphorus-chlorine bonds in hexachlorocyclotriphosphazene, a series of phosphazene compounds (shown as a reaction formula I) are prepared through substitution reaction, and if nucleophilic substitution reaction is carried out on the phosphazene compounds and urea, the phosphazene compounds and the phosphonitrile compounds are added into the matrixes to participate in polycondensation reaction, so that phosphazene groups (shown as a reaction formula II) are introduced. The phosphonitrile group is a six-membered ring and is quite stable, P, N alternate double bonds are arranged, the phosphonitrile group exists in a ring or linear structure, and phosphorus and nitrogen have a good synergistic effect, namely the phosphorus has a heat absorption effect similar to metaphosphoric acid, and the nitrogen has an effect of diluting oxygen by inert gas, so that the modified MUF adhesive disclosed by the invention has good high-temperature resistance and flame retardant effect, is less in smoke generation and toxic gas and has an environment-friendly flame retardant effect.
Reaction formula one
Reaction formula II
More preferably, the alkaline substance in step a of the preparation method of the modified MUF adhesive is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water.
Preferably, the formaldehyde decomposition powder in the step (3) comprises chitin, nano silicon wafers and tourmaline powder; the tourmaline powder accounts for 0-5wt% of the mass of the formaldehyde decomposition powder
The effective components of the formaldehyde decomposition used in the invention are amino polymer and other biomass materials, nano materials and tourmaline powder, and the formaldehyde decomposition agent is non-toxic and harmless and has a healthy production environment. The board treated by the formaldehyde decomposition glue powder has the functions of adsorbing and decomposing formaldehyde on the surface, purifying air and improving the environmental quality index. The formaldehyde purification efficiency reaches over 75 percent, and the durability of the formaldehyde purification effect is more than 60 percent.
Preferably, the ternary complex solution in the step (2) is prepared from a biomass nanofiber solubilizer, a flame retardant and an acidic disazo dye compound solution according to a mass ratio of 1: 25-40: 100-300;
the preparation of the biomass nanofiber solubilizer comprises the following steps: adding 1-3 parts of bamboo leaf flavone, 0.5-0.8 part of beta-cyclodextrin peppermint oil micropowder, 3-6 parts of nano-particle size silicon dioxide and/or 2-5 parts of aluminum hydroxide into cellulose colloidal suspension consisting of 4-7 parts of cellulose and 80-150 parts of microcrystalline cellulose according to parts by weight, then adding 0.5-1.8 parts of 3-chloro-hydroxypropyl triethyl ammonium chloride, and stirring and reacting at 60-80 ℃ for 18-30min to obtain the cellulose.
The ternary complex solution is composed of a biomass nanofiber solubilizer and a dye, the surface of the ternary complex solution contains rich hydroxyl carboxyl, the ternary complex solution can be tightly combined with wood fibers, and the binding force of dye molecules in wood is improved. The ternary complex solution also contains bamboo leaf flavone and beta-cyclodextrin mint oil micro powder, has a good coupling effect with dye, and has high application value because a large amount of flavonoid compounds such as phenolic acid compounds, anthraquinone compounds, terpene lactones, alkaloids and the like contained in bamboo leaves have strong sterilization and bacteriostasis effects; the beta-cyclodextrin peppermint oil micro powder has good health care effect and pleasant fragrance, so that the compound dye also has good sterilization and bacteriostasis effects, prolongs the service life, and has pleasant fragrance, thereby ensuring that the dye is green and environment-friendly.
More preferably, the preparation method of the beta-cyclodextrin peppermint oil micro powder comprises the following steps: at the temperature of 20-30 ℃, mixing beta-cyclodextrin and peppermint oil according to the mass ratio of 8-15: 40-65, embedding the peppermint oil into the inner cavity of the beta-cyclodextrin in a molecular form to form beta-cyclodextrin peppermint oil micro powder in an inclusion compound form;
the extraction method of the bamboo leaf flavone comprises the following steps: selecting dry leaves of lower part of bamboo of more than six years old in Dryokohama delavayi, and pulverizing into 0.5-0.8mm folium Bambusae fine powder; dissolving with 75-85wt% methanol solution, performing ultrasonic treatment for 28-35min, dissolving with 75-85wt% methanol solution, filtering, and separating by column chromatography.
Preferably, in the step (1), a blank single plate is prepared by rotary cutting or slicing, and after the blank single plate is cut into a required size, carbonization heat treatment at different carbonization temperatures is carried out to obtain the single plate A.
More preferably, the carbonization heat treatment comprises the steps of putting the veneer into wood carbonization equipment, rapidly heating and humidifying, heating to 80-90 ℃, humidifying to 70-80% relative humidity, keeping for 2-4 h, heating to 125-135 ℃ by adopting a step-type heating method according to the speed of (30-40 ℃) to h, keeping for 2-4 h, then heating to 175-200 ℃ by adopting a step-type heating method, keeping for 2-4 h at the highest temperature, stopping heating and atomized water for bundling carbonization when the temperature of the wood is rapidly reduced to below 80 ℃ in the carbonization equipment by adopting a water spraying method after the temperature is increased, and immediately taking the wood out of the kiln when the temperature is naturally reduced to 40-60 ℃.
Preferably, before the step (2), the veneer A is bleached;
the bleaching treatment comprises the following steps:
preprocessing: placing the wood veneer in a sodium hydroxide solution with the pH value of 9-11 for 1-3 h to prepare a pretreated veneer;
alkaline decoloring:
preparing a solution A: the solution A is a mixed solution containing the following substances by mass concentration: 4-7% of hydrogen peroxide, 0.2-0.8% of sodium silicate, 0.05-0.1% of ethylene diamine tetraacetic acid, 0.05-0.15% of sodium sulfate, 0.05-0.1% of magnesium sulfate, 0.5-1% of sodium hydroxide, 0.4-0.8% of ammonia water and water as a solvent;
pouring the solution A into water at the temperature of 55-65 ℃, and adjusting the pH value to 9-11 by using sodium hydroxide to prepare a solution A temporary solution; placing the pretreated veneer into the solution A for decolorizing treatment, slowly heating to 80-90 ℃ at a heating rate of 5-10 ℃/h during treatment, and treating for 2-4 h to obtain an alkaline decolorizing treated veneer;
acid decoloring:
preparing a solution B: the solution B is a mixed solution containing the following substances by mass: 1-3% of sodium chlorate, 0.02-0.2% of sulfamic acid, 0.5-1.5% of oxalic acid, 0.1-0.5% of acetic acid, 0.3-1% of phosphoric acid and water as a solvent;
pouring the solution B into water at the temperature of 45-55 ℃, and adjusting the pH value to 4-6 by using phosphoric acid to prepare a solution B clinical solution; taking the alkaline decolorizing-treated veneer out of the solution A, washing with water, and then placing in the solution B for decolorizing treatment for 2-4 h to obtain an acidic decolorizing-treated veneer;
and fourthly, cleaning and drying: and taking the acid decolorizing single plate out of the solution B, soaking the acid decolorizing single plate in clear water for 1-2 h, and drying.
Preferably, the soaking, toughening, flame retarding and dyeing treatment in the step (2) comprises heating treatment at a temperature of 80-95 ℃.
Preferably, the step (2) of soaking, toughening, flame retarding and dyeing further comprises ultrasonic vibration treatment, wherein the frequency of the ultrasonic vibration treatment is 1-3.5 multiplied by 104 Hz, and the vibration time is 30-120 min.
Preferably, after the adhesive is discharged in the step D, 5-10 parts of formaldehyde capture agent and 1-3 parts of curing agent are added into the modified MUF adhesive in the using process;
the preparation method of the formaldehyde scavenger comprises the following steps: 10-20 parts of urea is crushed, 5-10 parts of melamine, 8-12 parts of p-toluenesulfonic acid dihydrazide, 6-7 parts of amine sulfonate and 1-2 parts of nano silicon dioxide are added, and the mixture is fully and uniformly stirred.
The addition of the resin type formaldehyde catching agent further reduces the molar ratio of urea and formaldehyde of the main body adhesive of the urea-formaldehyde resin, and free urea and a light methyl compound with reaction activity which are still in the system can react with the formaldehyde in the main body adhesive, thereby effectively reducing the formaldehyde release amount of the final artificial board.
More preferably, the preparation method of the curing agent is as follows: adding 100 parts of water into a reaction kettle, starting stirring, heating to 40-50 ℃, adding 20-30 parts of aluminum sulfate and 10-15 parts of p-toluenesulfonic acid, completely dissolving, cooling to room temperature, and discharging.
More preferably, the preparation method of the modified MUF adhesive further comprises the step of sequentially adding 6-9 parts of the first compound regulator and 7-11 parts of the second compound regulator after adding the formaldehyde catching agent.
More preferably, the first complex regulator consists of, by mass, 1: 3-4: 1-2 parts of trioctyl methyl ammonium bromide, glycerol and polytetrafluoroethylene;
the second composite regulator is prepared from the following components in a mass ratio of 1: 2-4: 1-3 parts of diphenylamine, 2, 6-di-tert-butyl and benzotriazole.
The first composite regulator has excellent dispersing, thickening and friction-reducing and wear-resisting properties after being proportioned; the second composite regulator has the functions of oxidation resistance, smoothness and corrosion resistance after being proportioned.
In conclusion, the invention has the following beneficial effects:
1. the prepared technical wood has wear resistance, weather resistance, high-efficiency flame retardance and smoke suppression;
2. the technical wood prepared by the invention has the functions of adsorbing and decomposing formaldehyde on the surface, purifying air and improving the environmental quality index. The formaldehyde purification efficiency reaches over 75 percent, and the durability of the formaldehyde purification effect is more than 60 percent;
3. the dyeing agent has good penetrating function, is not easy to run off, is weather-proof, has good compatibility with the water-based adhesive, and adopts biological environment-friendly dye, thereby greatly reducing pollution. And a flame retardant function is added in the modified MUF adhesive, so that the modified MUF adhesive, the binary compound dye and the formaldehyde decomposition glue solution have good matching synergy.
Detailed Description
Ternary compound solution formula I
The biomass nanofiber solubilizer comprises the following components in parts by mass: 25: 300 are compounded;
preparation of the biomass nanofiber solubilizer: adding 1 part of bamboo leaf flavone, 0.5 part of beta-cyclodextrin peppermint oil micropowder, 3 parts of nano-particle-size silicon dioxide and 5 parts of aluminum hydroxide into cellulose colloidal suspension consisting of 4 parts of cellulase and 150 parts of microcrystalline cellulose according to parts by weight, then adding 0.5 part of 3-chloro-hydroxypropyl triethyl ammonium chloride, and stirring and reacting at 60 ℃ for 18min to obtain the cellulose.
The preparation method of the beta-cyclodextrin peppermint oil micro powder comprises the following steps: at the temperature of 20 ℃, mixing beta-cyclodextrin and peppermint oil according to the mass ratio of 8: 65 mixing, and embedding the peppermint oil into the inner cavity of the beta-cyclodextrin in a molecular form to form beta-cyclodextrin peppermint oil micro powder in an inclusion compound form;
the extraction method of the bamboo leaf flavone comprises the following steps: selecting dry leaves of lower part of bamboo of more than six years old in Dryokohama delavayi, and pulverizing into 0.5mm folium Bambusae fine powder; dissolving with 75wt% methanol solution, performing ultrasonic treatment for 28min, dissolving with 75wt% methanol solution, filtering, and collecting filtrate as liquid to be separated for column chromatography.
Ternary compound solution formula II
The biomass nanofiber solubilizer comprises the following components in parts by mass: 40: 100 are compounded;
preparation of the biomass nanofiber solubilizer: adding 1 part of bamboo leaf flavone, 0.5 part of beta-cyclodextrin peppermint oil micropowder, 6 parts of nano-particle-size silicon dioxide and 2 parts of aluminum hydroxide into cellulose colloidal suspension consisting of 7 parts of cellulase and 80 parts of microcrystalline cellulose according to parts by weight, then adding 1.8 parts of 3-chloro-hydroxypropyl triethyl ammonium chloride, and stirring and reacting at 80 ℃ for 30min to obtain the cellulose.
The preparation method of the beta-cyclodextrin peppermint oil micro powder comprises the following steps: at the temperature of 30 ℃, mixing beta-cyclodextrin and peppermint oil according to the mass ratio of 15: 40, mixing, namely embedding the peppermint oil into the inner cavity of the beta-cyclodextrin in a molecular form to form beta-cyclodextrin peppermint oil micro powder in an inclusion compound form;
the extraction method of the bamboo leaf flavone comprises the following steps: selecting dry leaves of lower part of bamboo of more than six years old in Dryokohama delavayi, and pulverizing into 0.8mm folium Bambusae fine powder; dissolving with 85wt% methanol solution, performing ultrasonic treatment for 35min, dissolving with 85wt% methanol solution, filtering, and collecting filtrate as liquid to be separated for column chromatography.
Ternary compound solution formula III
The biomass nanofiber solubilizer comprises the following components in parts by mass: 30: 200 are compounded;
preparation of the biomass nanofiber solubilizer: adding 2 parts by weight of bamboo leaf flavone, 0.6 part by weight of beta-cyclodextrin peppermint oil micro powder, 5 parts by weight of nano-particle size silicon dioxide and 3 parts by weight of aluminum hydroxide into cellulose colloidal suspension consisting of 6 parts by weight of cellulose and 120 parts by weight of microcrystalline cellulose, then adding 0.9 part by weight of 3-chloro-hydroxypropyl triethyl ammonium chloride, and stirring and reacting at 70 ℃ for 25min to obtain the nano-cellulose-based cellulose.
The preparation method of the beta-cyclodextrin peppermint oil micro powder comprises the following steps: at 25 ℃, mixing beta-cyclodextrin and peppermint oil according to a mass ratio of 12: 55, mixing, and embedding the peppermint oil into the inner cavity of the beta-cyclodextrin in a molecular form to form beta-cyclodextrin peppermint oil micro powder in an inclusion compound form;
the extraction method of the bamboo leaf flavone comprises the following steps: selecting dry leaves of lower part of bamboo of more than six years old in Dryokohama delavayi, and pulverizing into 0.6mm folium Bambusae fine powder; dissolving with 80wt% methanol solution, performing ultrasonic treatment for 30min, dissolving with 80wt% methanol solution, filtering, and collecting filtrate as liquid to be separated for column chromatography.
Example one
The preparation method of the modified MUF adhesive comprises the following steps:
A. weighing 100 parts by weight of formaldehyde aqueous solution with mass concentration of 36.5wt%, 0.1 part by weight of alkaline substance solution with mass concentration of 30wt% and 0.3 part by weight of amino-terminated hyperbranched polymer PAMAM, putting into a reaction kettle, and starting stirring; the alkaline substance is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water;
B. adding 1 part of hexachlorocyclotriphosphazene, heating to 50 ℃, adding 35 parts of melamine when the temperature is automatically raised to 75 ℃, continuously heating to 90 ℃, and reacting to obtain a primary polycondensate;
C. adding 40 parts of melamine into the primary polycondensate, and adding 0.6 part of p-toluenesulfonamide to obtain a second polycondensate;
D. and (3) cooling the second condensation polymer to 70 ℃, adding 20 parts of urea, continuing to react for 8min, and discharging the glue when the temperature is reduced to 30 ℃.
Example two
The preparation method of the modified MUF adhesive comprises the following steps:
A. weighing 100 parts by weight of formaldehyde aqueous solution with the mass concentration of 37.4wt%, 0.5 part by weight of alkaline substance solution with the mass concentration of 50wt% and 0.6 part by weight of amino-terminated hyperbranched polymer PAMAM, putting into a reaction kettle, and starting stirring; the alkaline substance is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water;
B. adding 1 part of hexachlorocyclotriphosphazene, heating to 55 ℃, adding 55 parts of melamine when the temperature is automatically raised to 85 ℃, and continuously heating to 95 ℃ for reaction to obtain a primary polycondensate;
C. adding 45 parts of melamine into the primary polycondensate, and adding 0.9 part of p-toluenesulfonamide to obtain a second polycondensate;
D. and (3) cooling the second condensation polymer to 75 ℃, adding 30 parts of urea, continuing to react for 12min, and discharging the glue when the temperature is reduced to 50 ℃.
EXAMPLE III
The preparation method of the modified MUF adhesive comprises the following steps:
A. weighing 100 parts by weight of formaldehyde aqueous solution with mass concentration of 36.9wt%, 0.4 part by weight of alkaline substance solution with mass concentration of 40wt% and 0.5 part by weight of amino-terminated hyperbranched polymer PAMAM, putting into a reaction kettle, and starting stirring; the alkaline substance is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water;
B. adding 3 parts of hexachlorocyclotriphosphazene, heating to 53 ℃, adding 45 parts of melamine when the temperature is automatically raised to 80 ℃, and continuously heating to 92 ℃ for reaction to obtain a primary polycondensate;
C. adding 43 parts of melamine to the primary polycondensate, and adding 0.8 part of p-toluenesulfonamide to obtain a second polycondensate;
D. and (3) cooling the second polycondensate to 72 ℃, adding 20-30 parts of urea, continuing to react for 9min, and discharging the glue when the temperature is reduced to 40 ℃.
Example four
The same as the first embodiment, except that after the adhesive is obtained in the step D, 5 parts of formaldehyde scavenger and 1 part of curing agent are added into the modified MUF adhesive in the using process;
the preparation method of the formaldehyde scavenger comprises the following steps: crushing 10 parts of urea, adding 5 parts of melamine, 8 parts of p-toluenesulfonic acid dihydrazide, 6 parts of amine sulfonate and 1 part of nano silicon dioxide, and fully and uniformly stirring;
the preparation method of the curing agent comprises the following steps: adding 100 parts of water into a reaction kettle, starting stirring, heating to 40 ℃, adding 20 parts of aluminum sulfate and 15 parts of p-toluenesulfonic acid, completely dissolving, cooling to room temperature, and discharging.
The preparation method of the modified MUF adhesive further comprises the steps of sequentially adding 6 parts of a first compound regulator and 11 parts of a second compound regulator after adding the formaldehyde catching agent;
the first composite regulator is prepared by mixing the following components in a mass ratio of 1: 3: 2, trioctylmethylammonium bromide, glycerol and polytetrafluoroethylene in proportion;
the second composite regulator is prepared from the following components in a mass ratio of 1: 2: 3 portions of diphenylamine, 2, 6-di-tert-butyl and benzotriazole.
EXAMPLE five
The second embodiment is the same as the second embodiment, except that after the adhesive is obtained in the step D, 5 parts of formaldehyde scavenger and 3 parts of curing agent are added into the modified MUF adhesive in the using process;
the preparation method of the formaldehyde scavenger comprises the following steps: crushing 20 parts of urea, adding 10 parts of melamine, 12 parts of p-toluenesulfonic acid dihydrazide, 7 parts of amine sulfonate and 2 parts of nano silicon dioxide, and fully and uniformly stirring;
the preparation method of the curing agent comprises the following steps: adding 100 parts of water into a reaction kettle, starting stirring, heating to 50 ℃, adding 30 parts of aluminum sulfate and 10 parts of p-toluenesulfonic acid, completely dissolving, cooling to room temperature, and discharging.
The preparation method of the modified MUF adhesive further comprises the steps of sequentially adding 9 parts of a first compound regulator and 11 parts of a second compound regulator after adding the formaldehyde catching agent;
the first composite regulator is prepared by mixing the following components in a mass ratio of 1: 4: 1 proportion of trioctylmethylammonium bromide, glycerol and polytetrafluoroethylene;
the second composite regulator is prepared from the following components in a mass ratio of 1: 4: 1 proportion of diphenylamine, 2, 6-di-tert-butyl and benzotriazole.
EXAMPLE six
The third embodiment is the same as the third embodiment, except that after the adhesive is obtained in the step D, 6 parts of formaldehyde scavenger and 2 parts of curing agent are added into the modified MUF adhesive in the using process;
the preparation method of the formaldehyde scavenger comprises the following steps: crushing 15 parts of urea, adding 8 parts of melamine, 11 parts of p-toluenesulfonic acid dihydrazide, 6.5 parts of amine sulfonate and 1.2 parts of nano silicon dioxide, and fully and uniformly stirring;
the preparation method of the curing agent comprises the following steps: adding 100 parts of water into a reaction kettle, starting stirring, heating to 45 ℃, adding 25 parts of aluminum sulfate and 12 parts of p-toluenesulfonic acid, completely dissolving, cooling to room temperature, and discharging.
The preparation method of the modified MUF adhesive further comprises the steps of sequentially adding 8 parts of a first compound regulator and 7 parts of a second compound regulator after adding the formaldehyde catching agent;
the first composite regulator is prepared by mixing the following components in a mass ratio of 1: 3.4: 1.2, trioctylmethylammonium bromide, glycerol and polytetrafluoroethylene;
the second composite regulator is prepared from the following components in a mass ratio of 1: 2.4: 1.3 of diphenylamine, 2, 6-di-tert-butyl and benzotriazole.
EXAMPLE seven
The preparation method of the technical wood comprises the following steps:
(1) a blank single plate is manufactured by rotary cutting or slicing, and the blank single plate is cut into a required size to obtain a single plate A;
(2) carrying out soaking, toughening and flame-retardant dyeing treatment on the veneer A in a ternary compound solution consisting of a biomass nano-cellulose solubilizer, a flame retardant and an acid dye to obtain a veneer B; wherein, the soaking, toughening, flame retarding and dyeing treatment comprises heating treatment at the temperature of 80 ℃; wherein, the ternary complex solution is formulated and prepared according to a first formulation of the ternary complex solution;
wherein the acid dye is a bisazo compound:
m1, M2 are independently from each other hydrogen or an alkali metal;
r1 is hydrogen, C1-C4 alkyl or halogen;
r2 is hydrogen;
x is halogen;
y is-CH = CH 2;
(3) adding formaldehyde decomposition powder into the modified MUF adhesive, uniformly stirring, and performing adhesive distribution on the veneer B to obtain a veneer C;
the formaldehyde decomposition powder comprises chitin and a nano silicon wafer;
(4) and (5) assembling the C veneer, performing cold pressing treatment to obtain a D batten, and sawing into required patterns and sizes to obtain a finished product.
Example eight
The seventh embodiment is that the difference is that the soaking toughening flame-retardant dyeing treatment comprises heating treatment, and the temperature is 88 ℃; the formaldehyde decomposition powder in the step (3) comprises chitin, nano silicon wafers and tourmaline powder; the tourmaline powder accounts for 2wt% of the mass of the formaldehyde decomposition powder.
Example nine
The seventh embodiment is that the difference is that the soaking toughening flame-retardant dyeing treatment comprises heating treatment, and the temperature is 95 ℃; the formaldehyde decomposition powder in the step (3) comprises chitin, nano silicon wafers and tourmaline powder; the tourmaline powder accounts for 5wt% of the mass of the formaldehyde decomposition powder.
Example ten
The seventh embodiment is different from the seventh embodiment in that the blank single plate is made by rotary cutting or slicing in the step (1), and after the blank single plate is cut into a required size, carbonization heat treatment with different carbonization temperatures is carried out to obtain the single plate A.
More preferably, the carbonization heat treatment comprises the steps of putting the veneer into a wood carbonization device, rapidly heating and humidifying, raising the temperature to 80 ℃, humidifying the humidity to 70% relative humidity, keeping for 2h, then heating to 125 ℃ at the speed of 30 ℃/h by adopting a step-type heating method, keeping for 2h, then heating to 175 ℃ at the temperature of 12 ℃/h by adopting a step-type heating method, keeping for 2h at the highest temperature, stopping heating and spraying atomized water for final carbonization when the temperature of the wood is rapidly reduced to below 80 ℃ in the carbonization device by adopting a water spraying method after the temperature is finished, and immediately taking the wood out of the kiln when the temperature is naturally reduced to 40 ℃.
Before the step (2), carrying out bleaching treatment on the veneer A;
the bleaching treatment comprises the following steps:
preprocessing: placing the wood veneer in a sodium hydroxide solution with the pH value of 9 for 1h to prepare a pretreated veneer;
alkaline decoloring:
preparing a solution A: the solution A is a mixed solution containing the following substances by mass concentration: 4% of hydrogen peroxide, 0.2% of sodium silicate, 0.05% of ethylene diamine tetraacetic acid, 0.05% of sodium sulfate, 0.05% of magnesium sulfate, 0.5% of sodium hydroxide, 0.8% of ammonia water and water as a solvent;
pouring the solution A into water with the temperature of 55 ℃, and adjusting the pH value to 9 by using sodium hydroxide to prepare a solution A clinical solution; placing the pretreated veneer in the solution A for decolorizing treatment, slowly heating to 80 ℃ at a heating rate of 5 ℃/h during treatment, and treating for 2h to obtain an alkaline decolorizing treated veneer;
acid decoloring:
preparing a solution B: the solution B is a mixed solution containing the following substances by mass: 1% of sodium chlorate, 0.02% of sulfamic acid, 0.5% of oxalic acid, 0.1% of acetic acid, 1% of phosphoric acid and water as a solvent;
pouring the solution B into water of 45 ℃, and adjusting the pH value to 4 by using phosphoric acid to prepare a solution B clinical solution; taking the alkaline decolorizing treatment veneer out of the solution A, washing with water, and placing in the solution B for decolorizing treatment for 2h to obtain an acidic decolorizing treatment veneer;
and fourthly, cleaning and drying: and taking the acid decolored single plate out of the temporary solution of the solution B, putting the single plate into clear water to soak for 1h, and then drying.
And (3) when the soaking, toughening and flame-retardant dyeing treatment in the step (2) is carried out, ultrasonic vibration treatment is also carried out, the frequency of the ultrasonic vibration treatment is 1 multiplied by 104 Hz, and the vibration time is 30 min.
EXAMPLE eleven
The embodiment eight is the same as the embodiment eight, except that the blank single plate is prepared by rotary cutting or slicing in the step (1), and the carbonization heat treatment with different carbonization temperatures is carried out after the blank single plate is cut into the required size, so as to obtain the single plate A.
More preferably, the carbonization heat treatment comprises the steps of putting the veneer into a wood carbonization device, rapidly heating and humidifying, heating to 90 ℃, humidifying to 80% of relative humidity, keeping for 4h, heating to 135 ℃ at a speed of 40 ℃/h by adopting a step-type heating method, keeping for 4h, heating to 200 ℃ at a temperature of 18 ℃/h by adopting a step-type heating method, keeping for 2h to 4h at the highest temperature, stopping heating and spraying atomized water to finish carbonization when the temperature of the wood is rapidly reduced to below 80 ℃ in the carbonization device by adopting a spray atomized water method after the temperature is finished, and immediately taking the wood out of the kiln when the temperature is naturally reduced to 60 ℃.
Before the step (2), carrying out bleaching treatment on the veneer A;
the bleaching treatment comprises the following steps:
preprocessing: placing the wood veneer in a sodium hydroxide solution with the pH value of 11 for 1-3 h to prepare a pretreated veneer;
alkaline decoloring:
preparing a solution A: the solution A is a mixed solution containing the following substances by mass concentration: 7% of hydrogen peroxide, 0.8% of sodium silicate, 0.1% of ethylene diamine tetraacetic acid, 0.15% of sodium sulfate, 0.1% of magnesium sulfate, 1% of sodium hydroxide, 0.4% of ammonia water and water as a solvent;
pouring the solution A into 65 ℃ water, and adjusting the pH value to 11 by using sodium hydroxide to prepare a solution A clinical solution; placing the pretreated veneer in the solution A for decolorizing treatment, slowly heating to 90 ℃ at a heating rate of 10 ℃/h during treatment, and treating for 4h to obtain an alkaline decolorizing treated veneer;
acid decoloring:
preparing a solution B: the solution B is a mixed solution containing the following substances by mass: 3% of sodium chlorate, 0.2% of sulfamic acid, 1.5% of oxalic acid, 0.5% of acetic acid, 0.3% of phosphoric acid and water as a solvent;
pouring the solution B into water of 55 ℃, and adjusting the pH value to 6 by using phosphoric acid to prepare a solution B clinical solution; taking the alkaline decolorizing treatment veneer out of the solution A, washing with water, and placing in the solution B for decolorizing treatment for 4h to obtain an acidic decolorizing treatment veneer;
and fourthly, cleaning and drying: and taking the acid decolored single plate out of the temporary solution of the solution B, putting the single plate into clear water for soaking for 2 hours, and then drying.
And (3) when the soaking, toughening and flame-retardant dyeing treatment in the step (2) is carried out, ultrasonic vibration treatment is also carried out, the frequency of the ultrasonic vibration treatment is 3.5 multiplied by 104 Hz, and the vibration time is 120 min.
Example twelve
The embodiment is the same as the ninth embodiment, except that the blank single plate is prepared by rotary cutting or slicing in the step (1), and the blank single plate is cut into required size and then is subjected to carbonization heat treatment at different carbonization temperatures to obtain the single plate A.
More preferably, the carbonization heat treatment comprises the steps of putting the veneer into a wood carbonization device, rapidly heating and humidifying, raising the temperature to 85 ℃, humidifying the humidity to 75% of relative humidity, keeping for 3h, then heating to 128 ℃ at the speed of 35 ℃/h by adopting a step-type heating method, keeping for 3h, then heating to 185 ℃ by adopting a step-type heating method, keeping for 3h at the highest temperature, stopping heating and spraying atomized water for final carbonization when the temperature of the wood is rapidly reduced to below 80 ℃ in the carbonization device by adopting a spray atomized water method after the temperature is finished, and immediately taking the wood out of the kiln when the temperature is naturally reduced to 50 ℃.
Before the step (2), carrying out bleaching treatment on the veneer A;
the bleaching treatment comprises the following steps:
processing: placing the wood veneer in a sodium hydroxide solution with the pH value of 10 for 2 hours to prepare a pretreated veneer;
alkaline decoloring:
preparing a solution A: the solution A is a mixed solution containing the following substances by mass concentration: 5% of hydrogen peroxide, 0.6% of sodium silicate, 0.08% of ethylene diamine tetraacetic acid, 0.08% of sodium sulfate, 0.07% of magnesium sulfate, 0.5-1% of sodium hydroxide, 0.6% of ammonia water and water as a solvent;
pouring the solution A into water of 60 ℃, and adjusting the pH value to 10 by using sodium hydroxide to prepare a solution A clinical solution; placing the pretreated veneer in the solution A for decolorizing treatment, slowly heating to 85 ℃ at the heating rate of 8 ℃/h during treatment, and treating for 3h to obtain an alkaline decolorizing treated veneer;
acid decoloring:
preparing a solution B: the solution B is a mixed solution containing the following substances by mass: 2% of sodium chlorate, 0.12% of sulfamic acid, 0.8% of oxalic acid, 0.4% of acetic acid, 0.6% of phosphoric acid and water as a solvent;
pouring the solution B into water of 49 ℃, and adjusting the pH value to 5 by using phosphoric acid to prepare a solution B clinical solution; taking the alkaline decolorizing treatment veneer out of the solution A, washing with water, and placing in the solution B for decolorizing treatment for 3h to obtain an acidic decolorizing treatment veneer;
and fourthly, cleaning and drying: and taking the acid decolorizing single plate out of the solution B, soaking the acid decolorizing single plate in clear water for 1.2h, and drying.
And (3) when the soaking, toughening and flame-retardant dyeing treatment in the step (2) is carried out, ultrasonic vibration treatment is also carried out, the frequency of the ultrasonic vibration treatment is 2.5 multiplied by 104 Hz, and the vibration time is 90 min.
The formaldehyde release limit of the finally prepared functional type technical wood is less than 0.2mg/L, and the formaldehyde release limit reaches the four-star standard of Japan F; the antibacterial rate is more than or equal to 90 percent; the surface wear resistance is less than or equal to 0.08g/100 r; the surface wear resistance meets the standard GB/T18103-2013. The formaldehyde purification efficiency of the prepared technical wood reaches over 75 percent, and the durability of the formaldehyde purification effect is more than 60 percent.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The preparation method of the technical wood is characterized by comprising the following steps:
(1) a blank single plate is manufactured by rotary cutting or slicing, and the blank single plate is cut into a required size to obtain a single plate A;
(2) carrying out soaking, toughening and flame-retardant dyeing treatment on the veneer A in a ternary compound solution consisting of a biomass nano-cellulose solubilizer, a flame retardant and an acid dye to obtain a veneer B;
the acid dye is a bisazo compound:
，
wherein,
m1, M2 are independently from each other hydrogen or an alkali metal;
R1is hydrogen, C1-C4Alkyl or halogen;
R2is hydrogen;
x is halogen;
y is-CH = CH2；
(3) Adding formaldehyde decomposition powder into the modified MUF adhesive, uniformly stirring, and performing adhesive distribution on the veneer B to obtain a veneer C;
(4) and (5) assembling the C veneer, performing cold pressing treatment to obtain a D batten, and sawing into required patterns and sizes to obtain a finished product.
2. The method for preparing technical wood according to claim 1, wherein the method comprises the following steps: the preparation method of the modified MUF adhesive in the step (3) comprises the following steps:
a, weighing 100 parts by weight of formaldehyde aqueous solution with mass concentration of 36.5-37.4wt%, 0.1-0.5 part by weight of alkaline substance solution with mass concentration of 30-50wt% and 0.3-0.6 part by weight of amino-terminated hyperbranched polymer PAMAM, putting into a reaction kettle, and starting stirring;
b, adding 1-4 parts by weight of hexachlorocyclotriphosphazene, heating to 50-55 ℃, adding 35-55 parts of melamine when automatically heating to 75-85 ℃, and continuously heating to 90-95 ℃ for reaction to obtain a primary polycondensate;
c, adding 40-45 parts of melamine into the primary polycondensate, and adding 0.6-0.9 part of p-toluenesulfonamide to obtain a second polycondensate;
and D, cooling the second condensation polymer to 70-75 ℃, adding 20-30 parts of urea, continuing to react for 8-12min, and discharging the glue when the temperature is reduced to 30-50 ℃.
3. The method for preparing technical wood according to claim 1, wherein the method comprises the following steps: the formaldehyde decomposition powder in the step (3) comprises chitin, a nano silicon wafer and tourmaline powder; the tourmaline powder accounts for 0-5wt% of the mass of the formaldehyde decomposition powder.
4. The method for preparing technical wood according to claim 1, wherein the method comprises the following steps: the ternary compound solution in the step (2) is prepared from a biomass nanofiber solubilizer, a flame retardant and an acidic disazo dye compound solution according to a mass ratio of 1: 25-40: 100-300;
the preparation of the biomass nanofiber solubilizer comprises the following steps: adding 1-3 parts of bamboo leaf flavone, 0.5-0.8 part of beta-cyclodextrin peppermint oil micropowder, 3-6 parts of nano-particle size silicon dioxide and/or 2-5 parts of aluminum hydroxide into cellulose colloidal suspension consisting of 4-7 parts of cellulose and 80-150 parts of microcrystalline cellulose according to parts by weight, then adding 0.5-1.8 parts of 3-chloro-hydroxypropyl triethyl ammonium chloride, and stirring and reacting at 60-80 ℃ for 18-30min to obtain the cellulose.
5. The method for preparing technical wood according to claim 1, wherein the method comprises the following steps: before the step (2), carrying out bleaching treatment on the veneer A;
the bleaching treatment comprises the following steps:
preprocessing: placing the wood veneer in a sodium hydroxide solution with the pH value of 9-11 for 1-3 h to prepare a pretreated veneer;
alkaline decoloring:
preparing a solution A: the solution A is a mixed solution containing the following substances by mass concentration: 4-7% of hydrogen peroxide, 0.2-0.8% of sodium silicate, 0.05-0.1% of ethylene diamine tetraacetic acid, 0.05-0.15% of sodium sulfate, 0.05-0.1% of magnesium sulfate, 0.5-1% of sodium hydroxide, 0.4-0.8% of ammonia water and water as a solvent;
pouring the solution A into water at the temperature of 55-65 ℃, and adjusting the pH value to 9-11 by using sodium hydroxide to prepare a solution A temporary solution; placing the pretreated veneer into the solution A for decolorizing treatment, slowly heating to 80-90 ℃ at a heating rate of 5-10 ℃/h during treatment, and treating for 2-4 h to obtain an alkaline decolorizing treated veneer;
acid decoloring:
preparing a solution B: the solution B is a mixed solution containing the following substances by mass: 1-3% of sodium chlorate, 0.02-0.2% of sulfamic acid, 0.5-1.5% of oxalic acid, 0.1-0.5% of acetic acid, 0.3-1% of phosphoric acid and water as a solvent;
pouring the solution B into water at the temperature of 45-55 ℃, and adjusting the pH value to 4-6 by using phosphoric acid to prepare a solution B clinical solution; taking the alkaline decolorizing-treated veneer out of the solution A, washing with water, and then placing in the solution B for decolorizing treatment for 2-4 h to obtain an acidic decolorizing-treated veneer;
and fourthly, cleaning and drying: and taking the acid decolorizing single plate out of the solution B, soaking the acid decolorizing single plate in clear water for 1-2 h, and drying.
6. The method for preparing technical wood according to claim 1, wherein the method comprises the following steps: and (2) the blank single plate is prepared by rotary cutting or slicing in the step (1), and after the blank single plate is cut into required size, carbonization heat treatment with different carbonization temperatures is carried out to obtain the single plate A.
7. The method for preparing technical wood according to claim 4, wherein the method comprises the following steps: the preparation method of the beta-cyclodextrin peppermint oil micro powder comprises the following steps: at the temperature of 20-30 ℃, mixing beta-cyclodextrin and peppermint oil according to the mass ratio of 8-15: 40-65, embedding the peppermint oil into the inner cavity of the beta-cyclodextrin in a molecular form to form beta-cyclodextrin peppermint oil micro powder in an inclusion compound form;
the extraction method of the bamboo leaf flavone comprises the following steps: selecting dry leaves of lower part of bamboo of more than six years old in Dryokohama delavayi, and pulverizing into 0.5-0.8mm folium Bambusae fine powder; dissolving with 75-85wt% methanol solution, performing ultrasonic treatment for 28-35min, dissolving with 75-85wt% methanol solution, filtering, and separating by column chromatography.
8. The method for preparing technical wood according to claim 2, wherein the method comprises the following steps: after the adhesive is obtained in the step D, 5-10 parts of formaldehyde catching agent and 1-3 parts of curing agent are added into the modified MUF adhesive in the using process;
the preparation method of the formaldehyde scavenger comprises the following steps: 10-20 parts of urea is crushed, 5-10 parts of melamine, 8-12 parts of p-toluenesulfonic acid dihydrazide, 6-7 parts of amine sulfonate and 1-2 parts of nano silicon dioxide are added, and the mixture is fully and uniformly stirred.
9. The method for preparing technical wood according to claim 8, wherein the method comprises the following steps: the preparation method of the curing agent comprises the following steps: adding 100 parts of water into a reaction kettle, starting stirring, heating to 40-50 ℃, adding 20-30 parts of aluminum sulfate and 10-15 parts of p-toluenesulfonic acid, completely dissolving, cooling to room temperature, and discharging.
10. The method for preparing technical wood according to claim 9, wherein the method comprises the following steps: the preparation method of the modified MUF adhesive further comprises the step of sequentially adding 6-9 parts of a first composite regulator and 7-11 parts of a second composite regulator after adding the formaldehyde catching agent.
Priority Applications (1)
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| CN105563586A (en) * | 2015-12-28 | 2016-05-11 | 德华兔宝宝装饰新材股份有限公司 | Preparation method of functional type engineered wood |
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