CN1183217C - Method for preparing natural nontoxic adhesive for wood use - Google Patents
Method for preparing natural nontoxic adhesive for wood use Download PDFInfo
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- CN1183217C CN1183217C CNB031280439A CN03128043A CN1183217C CN 1183217 C CN1183217 C CN 1183217C CN B031280439 A CNB031280439 A CN B031280439A CN 03128043 A CN03128043 A CN 03128043A CN 1183217 C CN1183217 C CN 1183217C
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- sodium
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- 231100000252 nontoxic Toxicity 0.000 title claims abstract description 23
- 230000003000 nontoxic effect Effects 0.000 title claims abstract description 23
- 239000002023 wood Substances 0.000 title abstract description 3
- 239000000853 adhesive Substances 0.000 title abstract 5
- 230000001070 adhesive effect Effects 0.000 title abstract 5
- 238000000034 method Methods 0.000 title description 10
- 230000004048 modification Effects 0.000 claims abstract description 42
- 238000012986 modification Methods 0.000 claims abstract description 42
- 229920002472 Starch Polymers 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000008107 starch Substances 0.000 claims abstract description 31
- 235000019698 starch Nutrition 0.000 claims abstract description 31
- 238000002360 preparation method Methods 0.000 claims abstract description 23
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 14
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 12
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims abstract description 10
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000006266 etherification reaction Methods 0.000 claims abstract description 5
- 238000004132 cross linking Methods 0.000 claims abstract description 4
- 230000032050 esterification Effects 0.000 claims abstract description 4
- 238000005886 esterification reaction Methods 0.000 claims abstract description 4
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 240000003183 Manihot esculenta Species 0.000 claims abstract description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims abstract description 3
- 240000008042 Zea mays Species 0.000 claims abstract description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 3
- 239000000839 emulsion Substances 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 36
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 32
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 27
- 239000004615 ingredient Substances 0.000 claims description 25
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- 239000012745 toughening agent Substances 0.000 claims description 19
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 18
- 239000004202 carbamide Substances 0.000 claims description 17
- XEKOWRVHYACXOJ-UHFFFAOYSA-N ethyl acetate Substances CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 15
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005728 strengthening Methods 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 8
- 229960001763 zinc sulfate Drugs 0.000 claims description 8
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 8
- MOMKYJPSVWEWPM-UHFFFAOYSA-N 4-(chloromethyl)-2-(4-methylphenyl)-1,3-thiazole Chemical compound C1=CC(C)=CC=C1C1=NC(CCl)=CS1 MOMKYJPSVWEWPM-UHFFFAOYSA-N 0.000 claims description 7
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 7
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 7
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 235000011187 glycerol Nutrition 0.000 claims description 7
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 7
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 7
- 235000019983 sodium metaphosphate Nutrition 0.000 claims description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 6
- 239000013543 active substance Substances 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 6
- 235000011152 sodium sulphate Nutrition 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 238000007710 freezing Methods 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 239000004160 Ammonium persulphate Substances 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 235000019395 ammonium persulphate Nutrition 0.000 claims description 3
- 125000004185 ester group Chemical group 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 2
- 240000004272 Eragrostis cilianensis Species 0.000 claims description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 235000005822 corn Nutrition 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 238000005034 decoration Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 3
- 238000004945 emulsification Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000012744 reinforcing agent Substances 0.000 abstract 3
- 239000003381 stabilizer Substances 0.000 abstract 2
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 abstract 1
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000010100 anticoagulation Effects 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 239000000796 flavoring agent Substances 0.000 abstract 1
- 235000019634 flavors Nutrition 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000002085 irritant Substances 0.000 abstract 1
- 231100000021 irritant Toxicity 0.000 abstract 1
- 235000009973 maize Nutrition 0.000 abstract 1
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- 238000010561 standard procedure Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 11
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 5
- 239000008103 glucose Substances 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical class O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 4
- 239000000227 bioadhesive Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 235000019256 formaldehyde Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 description 1
- 235000019890 Amylum Nutrition 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- 239000001828 Gelatine Substances 0.000 description 1
- 244000068988 Glycine max Species 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000012675 alcoholic extract Substances 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
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000004833 fish glue Substances 0.000 description 1
- 239000007863 gel particle Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 150000002303 glucose derivatives Chemical class 0.000 description 1
- -1 glucose small molecules Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001206 natural gum Polymers 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to a preparation method for a natural nontoxic adhesive for wood, which belongs to the technical field of chemistry. The natural nontoxic adhesive is prepared from a main material, polyvinyl alcohol as a reinforcing agent, a sodium polyacrylate solution as a stabilizing agent, various auxiliary agents, water, etc., wherein the main material is prepared from maize or cassava starch as a raw material by emulsification, oxidation, etherification, esterification, crosslinking and other kinds of reaction with the addition of sufficient water and various related auxiliary agents; related auxiliary agents are successively added in a water solution of the reinforcing agent to be polymerized into an emulsion by water resistant modification and anticoagulation modification, and then the stabilizing agent is added; thus, a modified reinforcing agent is prepared. The present invention has the characteristics of novel conception, standard technique, easy operation, easy acquirement of devices, no environmental pollution, easy formation of industrial production, etc.; an adhesive prepared by the present invention has the advantages of no toxicity, no irritant abnormal flavor, high water resistance, drying speed, adhesion strength and stability, low price, etc. An adhesive prepared by the present invention can be widely used for the fields of building materials, house decoration, family decoration, etc.
Description
Technical field
The present invention relates to a kind of method of making natural adhesive, particularly relate to the preparation method of a kind of timber with the Nantural non-toxic tackiness agent with the animal and plant raw material.The invention belongs to technical field of chemistry.
Background technology
Since ancient times, make natural adhesive with the animal and plant raw materials, and too numerous to enumerate in order to building materials sealing, classical deed bonding and material protection.The building glue that Ancient Chinese Great Wall is used is to add lime by glutinous rice to make; It is to make sealing and protective material with natural resin that the Egyptian does mummy.Until 60～seventies of last century, the making of plywood production, wood furniture, musical instrument, artistic handicraft using etc. all be unable to do without the bonding of natural gum.All because of low price, raw material is easy to get, nontoxic as fish glue, gelatine, hide glue and soybean glue etc., easy to use being widely used.But because of natural polymer contain hydrophilic radical mostly, as hydroxyl and alcoholic extract hydroxyl group and so on, the glue poor water resistance of making, dry slow, weakness such as bonding strength is not high, storage period is short.Therefore, progressively be synthesized glue over nearly 20 years and replace, as contain urea-formaldehyde resin, resol and some water soluble resin of formaldehydes.The above two contain formaldehyde poisonous, the people is had harm; The latter is on the high side and still unresolved aspect water-fast, freeze proof, anti-aging, and its application prospect is restricted.
Summary of the invention
Purpose of the present invention is exactly in order to remedy the deficiencies in the prior art, analyze insufficient root from mechanism, the method that exploration overcomes, learn wildly from other's strong points, through concentrating on studies for a long time, invented a kind of water-tolerant, rate of drying is fast, bonding strength is high, good stability, price is suitable, the non-toxic and non-pollution timber preparation method of natural adhesive.
To achieve these goals, technical scheme of the present invention is such:
The present invention selects for use plant amylum to make raw material.Starch can be used to glue, is because starch can be fully expanded under heating or alkali lye effect, forms the transparent colloid thing of white, and it is bonding often to be used to carton, textile industry slurry etc.But be used for timber, by the glue that simple method is made, its quality far can not meet the demands.The least unit of starch is a glucose molecule.Analyze the chemical structure of a glucose molecule and can find out " weakness " place of original amylan and the method that overcomes.Be the chemical structure of glucose molecule below:
From molecular structure, as can be seen, remove C
1Outside aldehyde radical, C
2-C
6All contain hydrophilic hydroxyl.Desire improves the performance of amylan, need manage these hydroxyls are replaced, and eliminates or " sealing ".Characteristics of the present invention are exactly to adopt three grades of modifications that are different from prior art, and one-level is crosslinked, additional enhancement agent, and the preparation method of stablizer and other relevant auxiliary agents realizes above-mentioned purpose.
The principle of three grades of modifications is according to known C
2, C
3, C
6On hydroxyl have the ability of chemical reaction.This is the internal factor that starch polymer can be modified.A starch polymer contains 600 to 6000 glucose small molecules, and known any single method can only make the hydroxyl on the minority glucose molecule change at present, and the amylan of being made by single method is modification and unmodified mixing starch glue.This shows, still have the possibility that can be continued modification by remaining ative starch after the single method modification.Adopt three grades of modifications, the method that one-level is crosslinked, the product that makes (natural adhesive) has preferable performance.
Timber involved in the present invention is made up of major ingredient, toughener, stable system, various auxiliary agent and water with the preparation method of Nantural non-toxic tackiness agent, its tackiness agent.It is characterized in that major ingredient is made raw material with corn or tapioca (flour), add enough water and combine with relevant auxiliary agent; Each component disposes by weight, wherein starch is 100, water is 100 to 200, relevant auxiliary agent has concentration 30%, transferring the NaOH of PH8-10 is 2 to 8, clorox is 1 to 8, NaCl is 1 to 2, industrial spirit is 5 to 30, NaOH (gelatinization) is 5 to 15, Mono Chloro Acetic Acid is 5 to 15, vinyl-acetic ester is 5 to 10, citric acid is 1 to 7, urea is 1 to 7, sal epsom is 0.5 to 1, zinc sulfate is 1 to 5, glycerine an amount of (1 to 7), sodium-metaphosphate is 4 to 10, silane coupling agent is 1 to 5 and filler (titanium dioxide, light calcium carbonate, silicon-dioxide and swollen pool soil etc. all can) be 5 to 15.Toughener is the toughener that polyvinyl alcohol, adding enough water, an amount of initiator and tensio-active agent, stablizer sodium polyacrylate solution, auxiliary agent urea and vinyl-acetic ester combine modification; Each component disposes by weight, wherein polyvinyl alcohol is 10 to 14, water is 80 to 100, urea is 0.5 to 1.5, the initiator Sodium Persulfate is 0.2 to 1.2 and sodium sulfate is 0.2 to 1.2, the tensio-active agent sodium lauryl sulphate is 4 to 10, vinyl-acetic ester be 10 to 40 and sodium polyacrylate solution be 10 to 40.Major ingredient and modification strengthening agent (PVA) prepare respectively, by a certain percentage the two are mixed the stirring certain hour afterwards and promptly get timber Nantural non-toxic tackiness agent.Its concrete preparation process is as follows: the preparation of A major ingredient, get starch 100, water 100 to 200, insert container for stirring, make water oil phase melt into white through emulsification, again through three grades of modifications and the crosslinked step of one-level, be a oxidation modification, get clorox 1 to 8 and add in the said vesse part of hydroxyl (C in the container on the starch molecule for oxygenant
2And C
3On hydroxyl) be directed and be oxidized to aldehyde radical or carboxyl, and make C
2And C
3The place disconnects, and makes the starch molecule quantitative change little, and product is mobile to be increased, and color is whiter; B is etherification modified, getting NaOH (gelatinization) 5 to 15 adds in the above-mentioned starch solution, on the basis of alkali gelatinization, add Mono Chloro Acetic Acid 5 to 15 again and make it to form starch---sodium chloroacetate, etherification procedure is that the starch molecule that a part is not oxidized is proceeded chemical modification, modification after product viscosity is big, intensity is high, is difficult for going mouldy, and this process mainly occurs on three hydroxyls; The C esterification modification, on above-mentioned reaction basis, the vinyl-acetic ester or the diacetyl oxide of adding 5 to 10 make the hydroxyl on the starch molecule connect hydrophobic ester group, to improve the water tolerance and the anti-freezing ability of glue; D is crosslinked, getting linking agent sodium-metaphosphate 4 to 10 and silane coupling agent 1 to 5 successively adds in the above-mentioned reacted starch solution, starch polymer is by the linear reticulated structure that is converted into the bodily form after the crosslinking reaction, remaining hydroxyl is isolated or " sealing " as far as possible, can improve the water tolerance and the bonding property of product; The e major ingredient forms, in the crosslinked starch solution of above-mentioned three grades of modifications and one-level, add concentration 30% and transfer NaOH2 to 8, the NaCl1 to 2 of PH8 to 10, industrial spirit 5 to 30, citric acid 1 to 7, urea 1 to 7, sal epsom 0.5 to 1, zinc sulfate 1 to 5, glycerine 1 to 7 filler 5 to 15, evenly stir major ingredient.
The preparation of B modification strengthening agent is got toughener poly-ethylene/vinyl alcohol 10 to 14 and water 80 to 100, is inserted evenly stirring, standby in another container; Through the two-stage modification, that is: the water-fast modification of a, dissolved toughener (PVA) solution adds 0.5 to 1 under 30 to 65 ℃ of temperature.5 urea make it with PVA on hydroxyl generation chemical reaction, form and to stablize 6 single ring architectures, PVA is able to crosslinked, has improved water tolerance; B anti-freezing modification on the basis of above-mentioned reaction, adds vinyl-acetic ester 10 to 40, initiator ammonium persulfate 0.2 to 1.2 and sodium sulfate 0.2 to 1.2 and tensio-active agent sodium lauryl sulphate 4 to 10, aggregate into emulsion through evenly stirring, add stablizer sodium polyacrylate solution 10 to 40 at last, the PVA of modification.
C timber is made with the Nantural non-toxic tackiness agent, with the major ingredient prepared and modified PVA in following ratio, i.e. major ingredient: toughener=4 were mixed to 6 configurations to 8: 2 and were stirred 0.2 to 1.5 hour, promptly can be made into timber Nantural non-toxic tackiness agent.
The preparation method of the tackiness agent that the present invention is alleged, it is characterized in that, water in the major ingredient is 180, the NaOH of 30% accent PH9 is 5, clorox is 5, NaCl is 1, industrial spirit is 15 (alcohol can carry out when playing the froth breaking effect and making quantitative alkali gelatinization smoothly), gelatinization NaCH is 5, Mono Chloro Acetic Acid is 5, vinyl-acetic ester is 8, citric acid is 5 (urging the effect of doing with sal epsom), sal epsom is 0.8, urea is 5 (to prevent the formation of gel particle, increase the flowability of glue), zinc sulfate is 2 (playing anti-corrosive antibacterial), glycerine is 5 (antifreeze and plasticising), sodium-metaphosphate is 8, silane coupling agent be 3 and the filler titanium dioxide be 10 (quickening the curing of glue).
The preparation method of the tackiness agent that the present invention is alleged is characterized in that, polyvinyl alcohol is 12 in the modified PVA, water is 90, urea is 1, ammonium persulphate is 1, sodium sulfate is 1, sodium lauryl sulphate is 8, vinyl-acetic ester be 25 and sodium polyacrylate solution be 25.
The preparation method of the tackiness agent that the present invention is alleged is characterized in that, major ingredient and modified PVA allocation ratio are 6: 4, and the two mixes churning time is 1 hour (h).
The alleged timber of the present invention is with the preparation method of Nantural non-toxic tackiness agent, have novel, technological specification, easy and simple to handle, equipment is easy to get, it is low pollution-free and be easy to form shape point such as suitability for industrialized production to invest.The tackiness agent of producing with the present invention has nontoxic nonirritant peculiar smell, and water-tolerant, rate of drying is fast, Joint strength is high, good stability, advantage such as cheap.The tackiness agent that the present invention produces can be widely used in building materials: fields such as house decoration and home decoration.
Embodiment
The timber involved in the present invention preparation method of Nantural non-toxic tackiness agent, its embodiment is as follows:
The preparation of A, major ingredient, at first extracting corn starch 1000 grams, water 1800 grams are inserted container and are stirred, and make water oil phase melt into white amidin through emulsification; Secondly, oxidation modification is got clorox 50 grams and is added in the said vesse as oxygenant, makes the part of hydroxyl on the starch molecule be oxidized to aldehyde radical or carboxylic acid; Its three, etherification modified, get NaOH (gelatinization) and be 50 grams and add starch solutions and be, on the basis of alkali gelatinization, add Mono Chloro Acetic Acid 50 grams, make it to form starch---sodium chloroacetate; Four, esterification modification on the basis of above-mentioned reaction, adds 80 gram vinyl-acetic esters, makes that hydroxyl connects hydrophobic ester group on the starch molecule; Five, crosslinked, get linking agent sodium-metaphosphate 80 grams and silane coupling agent 30 grams, successively add in the starch solution of above-mentioned reaction, starch polymer is converted into the reticulated structure of the bodily form by linearity after crosslinking reaction; Six, major ingredient forms, in the starch solution after above-mentioned three grades of modifications and one-level are crosslinked, the NaOH that adds concentration 30% accent PH9 is that 50 grams, NaCl are that 10 grams, industrial spirit are that 150 grams, citric acid are 50 grams, urea is that 50 grams, sal epsom are that 8 grams, zinc sulfate are 20 grams, gram, citric acid are 50 grams, and urea is that 50 grams, sal epsom are that 8 grams, zinc sulfate are 20 grams, and glycerine is that 50 grams and filler titanium dioxide are 100 grams, evenly stir major ingredient, standby.
The preparation of B, modification strengthening agent, get toughener polyvinyl alcohol 120 grams and water 900 grams and insert the interior evenly stirring of another container, be the water-fast modification of a through the both sexes modification again, dissolved toughener solution adds 10 gram urea under 50 ℃ of temperature, make it with toughener on hydroxyl generation chemical reaction, form 6 stable single ring architectures; B anti-freezing modification, on above-mentioned reaction basis, add vinyl-acetic ester 250 grams, ammonium persulphate 10 grams and sulfuric acid 10 grams and sodium lauryl sulphate 80 grams, aggregate into latex through evenly stirring, add stablizer sodium polyacrylate solution 250 grams at last, promptly become the toughener of modification, standby.
C, timber are made with the Nantural non-toxic tackiness agent, with the major ingredient that prepared and modification strengthening agent in following ratio, major ingredient: toughener=configuration in 6: 4, mix and stirred one hour, promptly can be made into timber Nantural non-toxic tackiness agent.
Claims (4)
1, a kind of by major ingredient, toughener, stablizer, the timber that multiple auxiliary agent and water the are formed preparation method of Nantural non-toxic tackiness agent, it is characterized in that, major ingredient is made raw material with corn or tapioca (flour), adding enough water combines with relevant auxiliary agent, each component disposes by weight, wherein starch is 100, water is 100 to 200, relevant auxiliary agent has concentration 30%, transferring the NaOH of PH8-10 is 2 to 8, clorox is 1 to 8, NaCl is 1 to 2, industrial spirit is 5 to 30, gelatinization NaOH is 5 to 15, Mono Chloro Acetic Acid is 5 to 15, vinyl-acetic ester is 5 to 10, citric acid is 1 to 7, urea is 1 to 7, sal epsom is 0.5 to 1, zinc sulfate is 1 to 5, glycerine is 1 to 7, sodium-metaphosphate is 4 to 10, silane coupling agent be 1 to 5 and filler be 5 to 15; Toughener is a polyvinyl alcohol, add enough water, an amount of initiator and tensio-active agent, stablizer sodium polyacrylate solution, auxiliary agent urea and vinyl-acetic ester combine the toughener of modification, each component disposes by weight, wherein polyvinyl alcohol is 10 to 14, water is 80 to 100, urea is 0.5 to 1.5, initiator ammonium persulfate be 0.2 to 1.2 and sodium sulfate be 0.2 to 1.2, the tensio-active agent sodium lauryl sulphate is 4 to 10, vinyl-acetic ester be 10 to 40 and sodium polyacrylate solution be 10 to 40; Major ingredient and modification strengthening agent prepare respectively, by a certain percentage the two are mixed the stirring certain hour afterwards and promptly get timber Nantural non-toxic tackiness agent, and its concrete preparation process is as follows:
Starch 100 is got in the preparation of A, major ingredient, water 100 to 200, insert container for stirring, again through three grades of modifications and the crosslinked step of one-level, i.e. a oxidation modification, get clorox 1 to 8 for oxygenant adds in the said vesse, the part of hydroxyl on the starch molecule in the container is oxidized to aldehyde radical or carboxylic acid; B is etherification modified, gets gelatinization NaOH5 to 15 and adds in the above-mentioned starch solution, on the basis of alkali gelatinization, adds an amount of Mono Chloro Acetic Acid again and makes it to form starch---sodium chloroacetate; The C esterification modification on the basis of above-mentioned reaction, adds 5 to 10 vinyl-acetic ester or diacetyl oxide, makes the hydroxyl on the starch molecule connect hydrophobic ester group; D is crosslinked, and successively adding is in above-mentioned reacted starch solution to get linking agent sodium-metaphosphate 4 to 10 and silane coupling agent 1 to 5, and starch polymer is by the linear reticulated structure that is converted into the bodily form after the crosslinking reaction; The e major ingredient forms, and 30% transfers NaOH2 to 8, NaCl1 to 2, industrial spirit 5 to 30, citric acid 1 to 7, urea 1 to 7, sal epsom 0.5 to 1, the zinc sulfate 1 to 5 of PH8 to 10, glycerine 1 to 7 and filler 5 to 15, through evenly stir major ingredient;
The preparation of B, modification strengthening agent, get toughener polyvinyl alcohol 10 to 14 and water 80 to 100, insert in another container evenly stir, standby, through the two-stage modification, it is the water-fast modification of a, with dissolved toughener solution the urea that adds 0.5 to 1.5 under 30 to 65 ℃ of temperature make it with toughener on hydroxyl generation chemical reaction, form 6 stable single ring architectures; B anti-freezing modification, on above-mentioned reaction basis, add vinyl-acetic ester 10 to 40, initiator ammonium persulfate 0.2 to 1.2 and sodium sulfate 0.2 to 1.2 and tensio-active agent sodium lauryl sulphate 4 to 10, aggregate into emulsion, add stablizer sodium polyacrylate solution 10 to 40 at last, promptly become the toughener of modification through evenly stirring;
C, timber are made with the Nantural non-toxic tackiness agent, with the major ingredient that prepared and modification strengthening agent in following ratio, i.e. major ingredient: toughener=4 were mixed to 6 to 8: 2 and were stirred 0.2 to 1.5 hour, promptly can be made into timber Nantural non-toxic tackiness agent.
2, the timber according to claim 1 preparation method of Nantural non-toxic tackiness agent, it is characterized in that, water in the major ingredient be 180,30% transfer that the NaOH of PH9 is 5, clorox is 5, NaCl is 1, industrial spirit is 15, gelatinization NaOH is 5, Mono Chloro Acetic Acid is 5, vinyl-acetic ester is 8, citric acid is 5, urea is 5, sal epsom is 0.8, zinc sulfate is 2, glycerine is 5, sodium-metaphosphate is 8, silane coupling agent be 3 and the filler titanium dioxide be 10.
3, the timber according to claim 1 and 2 preparation method of Nantural non-toxic tackiness agent, it is characterized in that, polyvinyl alcohol is 12 in the modification strengthening agent, water is 90, urea is 1, ammonium persulphate is 1, sodium sulfate is 1, sodium lauryl sulphate is 8, vinyl-acetic ester be 25 and sodium polyacrylate solution be 25.
4, timber according to claim 1 is characterized in that with the preparation method of Nantural non-toxic tackiness agent, and the ratio of major ingredient and modification strengthening agent configuration is 6: 4, and the two mixes and stirred 1 hour.
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| CNB031280439A CN1183217C (en) | 2003-05-27 | 2003-05-27 | Method for preparing natural nontoxic adhesive for wood use |
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| CNB031280439A CN1183217C (en) | 2003-05-27 | 2003-05-27 | Method for preparing natural nontoxic adhesive for wood use |
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| CN1183217C true CN1183217C (en) | 2005-01-05 |
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| CN101190950B (en) * | 2006-11-19 | 2011-06-22 | 江门市科恒实业股份有限公司 | Modified starch containing ester group chain substituent group and preparation method thereof |
| CN101724083B (en) * | 2010-01-15 | 2013-05-08 | 广西大学 | Method for producing modified starch |
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- 2003-05-27 CN CNB031280439A patent/CN1183217C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190950B (en) * | 2006-11-19 | 2011-06-22 | 江门市科恒实业股份有限公司 | Modified starch containing ester group chain substituent group and preparation method thereof |
| CN101724083B (en) * | 2010-01-15 | 2013-05-08 | 广西大学 | Method for producing modified starch |
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| CN1462786A (en) | 2003-12-24 |
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