CN103659968B - A kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber - Google Patents
A kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber Download PDFInfo
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Abstract
Utilize the organic medicament of environmental protection low molecule to prepare a method for preserving timber, the present invention relates to the preparation method of preserving timber.The present invention will solve existing timber preservative harm environment and easily run off, and to be used alone furfuryl alcohol free from environmental pollution and nitrogen hydroxymethyl resin be that the process liquid timber deposited after treatment cannot have excellent anti-turnover rate and antiseptic effect two kinds of performances concurrently simultaneously, use furfuryl alcohol and the simply composite process liquid be prepared into of nitrogen hydroxymethyl resin then to exist synergistic between furfuryl alcohol and nitrogen hydroxymethyl resin is poor, process liquid is unstable and process timber contraction distortion problem.Method: one, the gas dry-cure of timber; Two, the configuration of liquid is processed; Three, the vacuum pressed impregnation process of timber; Four, dry, namely obtain the preserving timber with high degree of dimensional stability utilizing the organic medicament of environmental protection low molecule to prepare.The present invention is a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber.
Description
Technical field
The present invention relates to the preparation method of preserving timber.
Background technology
Timber is a kind of biomass porous material, easily suffer microorganism, worm rotten.Especially, wooden product are used for outdoor, this just has higher requirement to wood preservation performance.And to carry out preservative treatment by the method for physics or chemistry to timber be a kind of effective method improving wood preservation performance, timber preservative mainly comprises oil-type preservation (as right in creosote and scallion oil), oil carries anticorrisive agent (as pentachlorophenol, aphthenic acids ketone etc.) and water ballast anticorrisive agent (chromium arsenic acid ketone, inorganic metal class and inorganic roc class) three major types.The most widely used is at present water ballast anticorrisive agent, but the technical problem the existed poor and anticorrisive agent skewness in wood that is the resistance leachability of anticorrisive agent.Coal creasote (creosote) is a kind of traditional oil-type preservation, coal creasote (creosote) is except having toxicity and causing very large impact to people and animals and environment, the technological deficiency also existed processes rear the preservation of timber against decay agent solution exactly and oozes out, and the natural texture of wood surface can be affected.Pentachlorophenol uses more one in oil base anticorrisive agent, and it is not only comparatively large to person poultry toxicity, and also has negative effect to environment, therefore in many countries as New Zealand, Germany, Japan and Sweden etc. are prohibited from using.Chromium copper arsenate CCA (chromatedcopperarsenate) is the water base anticorrisive agent that generally acknowledged inhibitor effectiveness is higher.But the arsenic contained in CCA and chromium exist potential hazard to people and applied environment soil and water source, the waste treatment of CCA process material or reclaim and still lack appropriate approach, therefore a lot of American-European countries such as the U.S., Canada, Germany etc. have started to forbid CCA.Except CCA, other anticorrisive agent containing arsenic or chromium also has ACC (acid copper chromate), ACA (ammonical copper arsenite), ACZA (the molten arsenic acid zinc-copper of ammonia), CCB (chromatize copper borate) etc., and these anticorrisive agents are also faced with the problem similar to CCA.
In order to avoid environmental hazard and the easy losing issue of traditional preservatives, full-fledged in the world utilize low-molecular-weight organic functions chemicals treatment timber, preparation has the process timber of excellent antiseptic effect, such as utilizes the timber of acetic anhydride monomer or the process of nitrogen hydroxymethyl resin.Previous Portuguese Esteves etc. have delivered article Propertiesoffurfurylatedwood (PinusPinaster) on academic journal EuropeanJournalofWoodandWoodProducts, " Wood Polymer Technology Co., Ltd " of Norway also applies for Patents, as WO2004/011214, WO2005/016606, their systematic account utilizes furfuryl alcohol monomer and oligomer process timber, by the condensation of furfuryl alcohol molecule in cell membrane and/or cross-linking reaction, strengthen dimensional stability and the mechanical property of timber, the medicament turnover rate of process timber is lower than 10%, but find that (European standard EN113 detects and finds under the rate of body weight gain condition of 10% the wood preservation limited capacity after furfuryl alcohol process, white rot and brown rot degrade the loss in weight that causes higher than 30%), Germany brother Dettingen university doctor Xie Yanjun reports nitrogen hydroxymethyl resin process timber and has extraordinary resistance to rot fungi infringement ability (EN113 detects lower than 10%) in its thesis for the doctorate, but its hydrolysis is comparatively serious, turnover rate higher (>40%), the dimensional stability that outdoor timber is lasting can not be given, and more obvious to the intensity infringement of timber.In order to make full use of furfuryl alcohol and nitrogen hydroxymethyl resin process timber advantage, avoid its negative effect to timber, prepare the preserving timber that resistance leachability is high, a kind of selections by two kinds of composite reagents, but simply composite again can because of furfuryl alcohol and nitrogen hydroxymethyl resin aqueous solution synergistic poor, gained process timber shrinks serious (>10%).
In sum, mainly there is following problem in existing wood preservation method process liquid:
One, existing process liquid endangers environment and easily runs off;
Two, furfuryl alcohol and nitrogen methylol is adopted to be that process liquid is free from environmental pollution, but adopt separately furfuryl alcohol and nitrogen methylol to be that the process liquid timber deposited after treatment cannot have excellent anti-turnover rate and antiseptic effect two kinds of performances concurrently, independent employing furfuryl alcohol is dimensional stability and the mechanical property that process liquid can strengthen timber, the medicament turnover rate of process timber is lower than 10%, but (European standard EN113 detects and finds under the rate of body weight gain condition of 10% the wood preservation limited capacity after furfuryl alcohol process, white rot and brown rot degrade the loss in weight that causes higher than 30%), independent employing nitrogen hydroxymethyl resin is that the timber of liquid process has extraordinary resistance to rot fungi infringement ability (EN113 detects lower than 10%), but its hydrolysis is comparatively serious, turnover rate higher (>40%), the dimensional stability that outdoor timber is lasting can not be given, and it is more obvious to the intensity infringement of timber,
Three, the synergistic directly furfuryl alcohol and nitrogen hydroxymethyl resin compound preparation process liquid then existed between furfuryl alcohol and nitrogen hydroxymethyl resin is poor, and the problem of process liquid instability, the timber size after process is unstable, shrinks serious (>10%).
Summary of the invention
The present invention will solve existing wood preservation method to be existed process liquid harm environment and easily runs off, and to be used alone furfuryl alcohol free from environmental pollution and nitrogen hydroxymethyl resin be that the process liquid timber deposited after treatment cannot have excellent anti-turnover rate and antiseptic effect two kinds of performances concurrently, synergistic as used furfuryl alcohol and the simple composite preparation process liquid of nitrogen hydroxymethyl resin then to exist between furfuryl alcohol and nitrogen hydroxymethyl resin is poor, liquid is unstable and process the yielding problem of timber, thus provide one to utilize the organic chemicals treatment timber of environmental protection low molecule, prepare the method for preserving timber.
Utilize the organic medicament of environmental protection low molecule to prepare a method for preserving timber, specifically carry out according to following steps:
One, the gas dry-cure of timber: timber is placed gas in atmosphere and do, obtain gas do after timber;
Two, the configuration of liquid is processed: the catalyst taking the surfactant of 3 parts ~ 10 parts, the furfuryl alcohol of 2 parts ~ 15 parts, the water of 40 parts ~ 89 parts, the nitrogen hydroxymethyl resin of 5 parts ~ 30 parts and 1 part ~ 5 parts by mass fraction; Then the surfactant of 3 parts ~ 10 parts, the furfuryl alcohol of 2 parts ~ 15 parts and the water of 40 parts ~ 89 parts are mixed, add the nitrogen hydroxymethyl resin of 5 parts ~ 30 parts and the catalyst of 1 part ~ 5 parts again, mix, and regulate solution ph to 3.5 ~ 7 or 7 ~ 8.5, obtain processing liquid;
The gross mass number of described furfuryl alcohol and nitrogen hydroxymethyl resin is 7 parts ~ 45 parts;
Three, the vacuum pressed impregnation process of timber: in wood preservation vacuum pressed equipment, in the process liquid that timber pickling after being done by gas obtains to step 2, and 1h ~ 24h is flooded under vacuum is-0.1MPa ~-0.05MPa, then under pressure is 0.1MPa ~ 3.5MPa, by the timber pressurize 2h ~ 48h after vacuum impregnation, obtain the timber after vacuum pressed impregnation process;
Four, dry: the timber after vacuum pressed impregnation process to be placed gas in atmosphere and does, obtain gas do after impregnated timber, then the impregnated timber after utilizing air dry oven to do gas carries out gradient increased temperature drying process, namely obtains the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare.
The invention has the beneficial effects as follows: one, solve the synergistic difficult problem in anticorrosion liquid between function host furfuryl alcohol and nitrogen hydroxymethyl resin, prepare stable process liquid; Two, the timber after process has excellent leach resistance and antiseptic effect concurrently, improves the anti-turnover rate (93% ~ 95%) of process timber, strengthens favorable anti-corrosion effect (rotten weightless 5% ~ 17%, far below rotten weightless more than 65% of unseasoned timber); Three, the dimensional stability of timber is improved, anti-swell-shrink coefficient >65%; Four, be environmentally friendly anticorrosive wood, prepare and the environmental pollution such as heavy metal free and venom impact in use procedure.
The present invention is used for a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber.
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any combination between each detailed description of the invention.
Detailed description of the invention one: a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber described in present embodiment, specifically carry out according to following steps:
One, the gas dry-cure of timber: timber is placed gas in atmosphere and do, obtain gas do after timber;
Two, the configuration of liquid is processed: the catalyst taking the surfactant of 3 parts ~ 10 parts, the furfuryl alcohol of 2 parts ~ 15 parts, the water of 40 parts ~ 89 parts, the nitrogen hydroxymethyl resin of 5 parts ~ 30 parts and 1 part ~ 5 parts by mass fraction; Then the surfactant of 3 parts ~ 10 parts, the furfuryl alcohol of 2 parts ~ 15 parts and the water of 40 parts ~ 89 parts are mixed, add the nitrogen hydroxymethyl resin of 5 parts ~ 30 parts and the catalyst of 1 part ~ 5 parts again, mix, and regulate solution ph to 3.5 ~ 7 or 7 ~ 8.5, obtain processing liquid;
The gross mass number of described furfuryl alcohol and nitrogen hydroxymethyl resin is 7 parts ~ 45 parts;
Three, the vacuum pressed impregnation process of timber: in wood preservation vacuum pressed equipment, in the process liquid that timber pickling after being done by gas obtains to step 2, and 1h ~ 24h is flooded under vacuum is-0.1MPa ~-0.05MPa, then under pressure is 0.1MPa ~ 3.5MPa, by the timber pressurize 2h ~ 48h after vacuum impregnation, obtain the timber after vacuum pressed impregnation process;
Four, dry: the timber after vacuum pressed impregnation process to be placed gas in atmosphere and does, obtain gas do after impregnated timber, then the impregnated timber after utilizing air dry oven to do gas carries out gradient increased temperature drying process, namely obtains the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare.
In present embodiment step 3, vacuum and pressure can adjust according to concrete timber size, thus reach best dipping effect.
In present embodiment step 4, the timber after vacuum pressed impregnation process being placed gas in atmosphere dry is cause cracking or distortion in order to prevent when directly solidification is dry.
Gas in atmosphere of being placed by timber described in present embodiment step one is done and the timber after vacuum pressed impregnation process is placed gas in atmosphere do to air balancing water content described in step 4, and moisture content is within 8% ~ 15% under normal circumstances.
Medicament fixed mechanism is in wood, under the effect of high temperature and catalyst, furfuryl alcohol mainly forms large molecule in the mode of condensation in cell membrane, tytosis wall micropore; Nitrogen hydroxymethyl resin then occurs crosslinked with cell wall substance, close the hygroscopicity hydroxyl in wood cell wall (mainly noncrystalline domain).Moisture content after process reduces, cell membrane micropore diminishes, permanent change occurs cell wall substance chemical constitution, the digestive enzyme of various rot fungi can not enter cell membrane inside, the material of crosslinked rear wood cell wall can not be identified, therefore, process timber can not provide the food required for them for these rot fungis and be suitable for the condition of their living environments, thus reaches antiseptic effect.
The beneficial effect of present embodiment is: one, solve the synergistic difficult problem in anticorrosion liquid between function host furfuryl alcohol and nitrogen hydroxymethyl resin, prepares stable process liquid; Two, the timber after process has excellent leach resistance and antiseptic effect concurrently, improves the anti-turnover rate (93% ~ 95%) of process timber, strengthens favorable anti-corrosion effect (rotten weightless 5% ~ 17%, far below rotten weightless more than 65% of unseasoned timber); Three, the dimensional stability of timber is improved, anti-swell-shrink coefficient >65%; Four, be environmentally friendly anticorrosive wood, prepare and the environmental pollution such as heavy metal free and venom impact in use procedure.
Detailed description of the invention two: present embodiment and detailed description of the invention one unlike: the surfactant described in step 2 is that fatty glyceride or aliphatic acid sorb are smooth.Other is identical with detailed description of the invention one.
Detailed description of the invention three: one of present embodiment and detailed description of the invention one or two are magnesium chloride, citric acid or Kangding element unlike: the catalyst described in step 2.Other is identical with detailed description of the invention one or two.
Detailed description of the invention four: one of present embodiment and detailed description of the invention one to three are unlike the catalyst that takes the surfactant of 3 parts ~ 7 parts, the furfuryl alcohol of 3 parts ~ 10 parts, the water of 50 parts ~ 80 parts, the nitrogen hydroxymethyl resin of 7 parts ~ 25 parts and 2 parts ~ 4 parts in step 2 by mass fraction; The gross mass number of described furfuryl alcohol and nitrogen hydroxymethyl resin is 10 parts ~ 30 parts.Other is identical with detailed description of the invention one to three.
Detailed description of the invention five: one of present embodiment and detailed description of the invention one to four unlike: regulate solution ph to 1.5 ~ 6.5 in step 2.Other is identical with detailed description of the invention one to four.
Detailed description of the invention six: one of present embodiment and detailed description of the invention one to five unlike: in step 3 in wood preservation vacuum pressed equipment, in the process liquid that timber pickling after being done by gas obtains to step 2, in the process liquid that timber pickling after being done by gas obtains to step 2, and 1h ~ 24h is flooded under vacuum is-0.1MPa ~-0.05MPa, then under pressure is 0.1MPa ~ 3.0MPa, by the timber pressurize 2h ~ 48h after vacuum impregnation, obtain the timber after vacuum pressed impregnation process.Other is identical with detailed description of the invention one to five.
Detailed description of the invention seven: one of present embodiment and detailed description of the invention one to six unlike: gradient increased temperature described in step 4 drying process concrete operations are as follows: the impregnated timber after being done by gas is from room temperature to 40 DEG C ~ 60 DEG C, and 1h ~ 24h is kept at temperature is 40 DEG C ~ 60 DEG C, then temperature is warming up to 60 DEG C ~ 80 DEG C by 40 DEG C ~ 60 DEG C, and 1h ~ 24h is kept at temperature is 60 DEG C ~ 80 DEG C, again temperature is warming up to 80 DEG C ~ 100 DEG C by 60 DEG C ~ 80 DEG C, 1h ~ 24h is kept at temperature is 80 DEG C ~ 100 DEG C, finally temperature is warming up to 100 DEG C ~ 140 DEG C from 80 DEG C ~ 100 DEG C, and heat drying 12h ~ 48h is continued at temperature is 100 DEG C ~ 140 DEG C.Other is identical with detailed description of the invention one to six.
At temperature is 100 DEG C ~ 140 DEG C, continue heat drying 12h ~ 48h in present embodiment step 4 is to make liquid solidify completely in wood.
Following examples are adopted to verify beneficial effect of the present invention:
Embodiment one:
A kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber described in the present embodiment, specifically carry out according to following steps:
One, the gas dry-cure of timber: timber is placed gas in atmosphere and do to balancing water content, obtain gas do after timber;
Two, the configuration of liquid is processed: the magnesium chloride taking the fatty acid glycerine of 5 parts, the furfuryl alcohol of 3 parts, the water of 83 parts, the nitrogen hydroxymethyl resin of 7 parts and 2 parts by mass fraction; Then the fatty acid glycerine of 5 parts, the furfuryl alcohol of 3 parts and the water of 83 parts are mixed, then add the nitrogen hydroxymethyl resin of 7 parts and the magnesium chloride of 2 parts, mix, and regulate solution ph to 4.5, obtain processing liquid;
The gross mass number of described furfuryl alcohol and nitrogen hydroxymethyl resin is 10 parts;
Three, the vacuum pressed impregnation process of timber: the vacuum/pressurized equipment adopting preservative treatment, in the process liquid that timber pickling after being done by gas obtains to step 2, and flood 12h in vacuum under-0.1MPa, then under pressure is 0.6MPa, by the timber pressurize 24h after vacuum impregnation, obtain the timber after vacuum pressed impregnation process;
The present embodiment adopts size 10mm*20mm*20mm(to be followed successively by axially, radial and tangential) poplar wood particle;
Four, dry: the timber after vacuum pressed impregnation process to be placed gas in atmosphere and does to balancing water content, obtain gas do after impregnated timber, then air dry oven is utilized, impregnated timber gradient increased temperature after being done by gas is dried to 80 DEG C, again temperature is warming up to 120 DEG C from 80 DEG C, and heat drying 24h is continued at temperature is 120 DEG C, namely obtain the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare.
The dry concrete operations of gradient increased temperature described in step 4 are as follows: the impregnated timber after being done by gas is from room temperature to 40 DEG C, and 4h is kept at temperature is 40 DEG C, then temperature is warming up to 60 DEG C by 40 DEG C, and 4h is kept at temperature is 60 DEG C, finally temperature is warming up to 80 DEG C by 60 DEG C, at temperature is 80 DEG C, keeps 4h.
Embodiment two: the difference of the present embodiment and embodiment one is: the magnesium chloride taking the fatty acid glycerine of 5 parts, the furfuryl alcohol of 6 parts, the water of 73 parts, the nitrogen hydroxymethyl resin of 14 parts and 2 parts in step 2 by mass fraction; Then the fatty acid glycerine of 5 parts, the furfuryl alcohol of 6 parts and the water of 73 parts are mixed, then add the nitrogen hydroxymethyl resin of 14 parts and the magnesium chloride of 2 parts, mix, and regulate solution ph to 4.5, obtain processing liquid.Other are identical with embodiment one.
Embodiment three: the difference of the present embodiment and embodiment one is: the magnesium chloride taking the fatty acid glycerine of 5 parts, the furfuryl alcohol of 9 parts, the water of 63 parts, the nitrogen hydroxymethyl resin of 21 parts and 2 parts in step 2 by mass fraction; Then the fatty acid glycerine of 5 parts, the furfuryl alcohol of 9 parts and the water of 63 parts are mixed, then add the nitrogen hydroxymethyl resin of 21 parts and the magnesium chloride of 2 parts, mix, and regulate solution ph to 4.5, obtain processing liquid.Other are identical with embodiment one.
Embodiment four: a kind of contrast experiment utilizing the organic medicament of environmental protection low molecule to prepare preserving timber described in the present embodiment, specifically carry out according to following steps:
One, the gas dry-cure of timber: timber is placed gas in atmosphere and do to balancing water content, obtain gas do after timber;
Two, vacuum pressed impregnation process: the vacuum/pressurized equipment adopting preservative treatment, timber pickling after being done by gas is in water, and flood 12h in vacuum under-0.1MPa, then under pressure is 0.6MPa, by the timber pressurize 24h after vacuum impregnation, obtain the timber after vacuum pressed impregnation process, for the reference sample of preservative-treated timber;
The present embodiment adopts size 10mm*20mm*20mm(to be followed successively by axially, radial and tangential) poplar wood particle;
Three, dry: the timber after vacuum pressed impregnation process to be placed gas in atmosphere and does to balancing water content, obtain gas do after impregnated timber, then air dry oven is utilized, impregnated timber gradient increased temperature after being done by gas is dried to 80 DEG C, again temperature is warming up to 120 DEG C from 80 DEG C, and heat drying 24h is continued at temperature is 120 DEG C, namely obtain the timber after contrast experiment's process.
The dry concrete operations of gradient increased temperature described in step 3 are as follows: the impregnated timber after being done by gas is from room temperature to 40 DEG C, and 4h is kept at temperature is 40 DEG C, then temperature is warming up to 60 DEG C by 40 DEG C, and 4h is kept at temperature is 60 DEG C, finally temperature is warming up to 80 DEG C by 60 DEG C, at temperature is 80 DEG C, keeps 4h.
Timber after contrast experiment's process that the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare obtain embodiment one to three and embodiment four obtain carries out rate of body weight gain (WPG) and turnover rate test, testing procedure is as follows: the timber after contrast experiment's process that the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare 1, embodiment one to three obtained and embodiment four obtain directly carries out test and the calculating of rate of body weight gain, obtains WPG(and does not clean), 2, timber after contrast experiment's process that the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare embodiment one to three obtained and embodiment four obtain is positioned over soaking and washing in distilled water, soak 10 days, change three distilled water every day, obtain the preserving timber after soaking and washing, then the preserving timber after cleaning being positioned over gas in air does to balancing water content, in drying box, under 103 ° of C, be dried to constant weight (continuous mass change of weighing for three times fluctuates in about 0.02g) and weigh, acquisition can be calculated and do not clean front and after cleaning rate of body weight gain, the turnover rate of medicament, test result is as shown in table 1.
Table 1: timber rate of body weight gain and turnover rate
| WPG/ experiment numbers | Embodiment four (%) | Embodiment one (%) | Embodiment two (%) | Embodiment three (%) |
| WPG(does not clean) | 0 | 19.95±3.11 | 32.23±2.81 | 44.31±3.81 |
| After WPG(cleaning) | 0 | 14.78±3.80 | 26.00±3.69 | 37.54±4.06 |
| Turnover rate | 100 | 5.17±0.69 | 6.23±0.88 | 6.77±1.25 |
As shown in Table 1, the timber after the liquid process that the gross mass number containing furfuryl alcohol and nitrogen hydroxymethyl resin is 10 parts, 20 parts and 30 parts, rate of body weight gain is respectively 14.8%, 26% and 37.5%, and turnover rate only has 5.2%, 6.2% and 6.8% respectively.Timber turnover rate after preservative treatment controls within 7%, and effectiveness comparison is obvious.
Timber after contrast experiment's process that the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare obtain embodiment one to three and embodiment four obtain carries out white rot and brown rot two kinds of rotten experiments of bacterial classification according to GB, experimental procedure is as follows: a, to configure river sand sawdust culture medium and cultivate bacterial classification (whiterot fungi and brown rot fungus) according to national standard (GB/T13942.1-92), culture medium is formulated in triangular flask, and bacterial classification is cultivated 7 ~ 10 days in culture dish, and cover with mycelia; B, aseptically, the whiterot fungi and brown rot fungus that cover with mycelia in culture dish to be inoculated on the sand culture medium of river respectively, to obtain the triangular flask after inoculating bacterial classification; C, the triangular flask after inoculation bacterial classification is placed in temperature is 28 DEG C ± 2 DEG C and relative air humidity is that the thermostatic constant wet chamber of 75%-85% cultivates, until the media surface in triangular flask covers with mycelia, obtains the triangular flask that media surface covers with mycelia; Timber after contrast experiment's process that d, the preserving timber utilizing the organic chemicals treatment of environmental protection low molecule to prepare embodiment one to three obtained and embodiment four obtain is put into temperature 103 DEG C of scholars 2 DEG C of baking ovens and is dried to constant weight, obtain the timber after drying, aseptically, timber after drying is put into media surface and cover with the triangular flask of mycelia and to be placed in temperature be 28 DEG C ± 2 DEG C and relative air humidity is that the thermostatic constant wet chamber of 75%-85% infects 12 weeks by bacterium, obtain the timber after infecting; The each self-test of timber 8 parallel repeat samples after the preserving timber that what described embodiment one to three obtained utilize the organic medicament of environmental protection low molecule to prepare and the contrast experiment that embodiment four obtains process; E, taken out and scrape off surperficial mycelia and impurity by the timber after infecting, in the baking oven of 103 DEG C ± 2 DEG C, be dried to constant weight, then weighed by sample and calculate, namely obtain mass loss rate, test result is as shown in table 2 and table 3.
From table 2 and 3, the gross mass number containing furfuryl alcohol and nitrogen hydroxymethyl resin in process liquid is the timber after the liquid process of 10 parts, 20 parts and 30 parts, and the rotten mass loss caused is 11.8% ~ 17.8%, and anticorrosion grade reaches the corrosion resistant level that standard delimited.Especially the gross mass number containing furfuryl alcohol and nitrogen hydroxymethyl resin in liquid is lumber quality loss after the liquid process of 10 parts only 5.2%, belongs to strong corrosion resistant level.Compared with only using the rotten mass loss 66% of water treatment timber (control sample), the durability of the preserving timber that the present invention obtains is significantly improved.
Table 2: white rot corrosion experiment lumber quality loses
| Experiment numbers | Mass loss rate (%) | Corrosion resistant grade |
| Embodiment four | 65.6 | Not corrosion resistant |
| Embodiment one | 5.17 | Strong corrosion resistant |
| Embodiment two | 11.86 | Corrosion resistant |
| Embodiment three | 16.84 | Corrosion resistant |
Table 3: brown rot corrosion experiment lumber quality loses
| Experiment numbers | Mass loss rate (%) | Corrosion resistant grade |
| Embodiment four | 66.6 | Not corrosion resistant |
| Embodiment one | 14.6 | Corrosion resistant |
| Embodiment two | 13.2 | Corrosion resistant |
| Embodiment three | 17.8 | Corrosion resistant |
Claims (6)
1. utilize the organic medicament of environmental protection low molecule to prepare a method for preserving timber, it is characterized in that a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber is carried out according to following steps:
One, the gas dry-cure of timber: timber is placed gas in atmosphere and do, obtain gas do after timber;
Two, the configuration of liquid is processed: the catalyst taking the surfactant of 3 parts ~ 10 parts, the furfuryl alcohol of 2 parts ~ 15 parts, the water of 40 parts ~ 89 parts, the nitrogen hydroxymethyl resin of 5 parts ~ 30 parts and 1 part ~ 5 parts by mass fraction; Then the surfactant of 3 parts ~ 10 parts, the furfuryl alcohol of 2 parts ~ 15 parts and the water of 40 parts ~ 89 parts are mixed, add the nitrogen hydroxymethyl resin of 5 parts ~ 30 parts and the catalyst of 1 part ~ 5 parts again, and regulate solution ph to 1.0 ~ 6.5, mix, obtain processing liquid;
The gross mass number of described furfuryl alcohol and nitrogen hydroxymethyl resin is 7 parts ~ 45 parts;
Surfactant described in step 2 is that fatty glyceride or aliphatic acid sorb are smooth;
Three, the vacuum pressed impregnation process of timber: in wood preservation vacuum pressed equipment, in the process liquid that timber pickling after being done by gas obtains to step 2, and 1h ~ 24h is flooded under vacuum is-0.1MPa ~-0.05MPa, then under pressure is 0.1MPa ~ 3.5MPa, by the timber pressurize 2h ~ 48h after vacuum impregnation, obtain the timber after vacuum pressed impregnation process;
Four, dry: the timber after vacuum pressed impregnation process to be placed gas in atmosphere and does, obtain gas do after impregnated timber, then the impregnated timber after utilizing air dry oven to do gas carries out gradient increased temperature drying process, namely obtains the preserving timber utilizing the organic medicament of environmental protection low molecule to prepare.
2. a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber according to claim 1, is characterized in that the catalyst described in step 2 is magnesium chloride, citric acid or Kangding element.
3. a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber according to claim 1, is characterized in that the catalyst taking the surfactant of 3 parts ~ 7 parts, the furfuryl alcohol of 3 parts ~ 10 parts, the water of 50 parts ~ 80 parts, the nitrogen hydroxymethyl resin of 7 parts ~ 25 parts and 2 parts ~ 4 parts in step 2 by mass fraction; The gross mass number of described furfuryl alcohol and nitrogen hydroxymethyl resin is 10 parts ~ 30 parts.
4. a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber according to claim 1, is characterized in that regulating solution ph to 1.5 ~ 6.5 in step 2.
5. a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber according to claim 1, to it is characterized in that in step 3 in wood preservation vacuum pressed equipment, in the process liquid that timber pickling after being done by gas obtains to step 2, and 1h ~ 24h is flooded under vacuum is-0.1MPa ~-0.05MPa, then under pressure is 0.1MPa ~ 3.0MPa, by the timber pressurize 2h ~ 48h after vacuum impregnation, obtain the timber after vacuum pressed impregnation process.
6. a kind of method utilizing the organic medicament of environmental protection low molecule to prepare preserving timber according to claim 1, it is characterized in that the gradient increased temperature drying process concrete operations described in step 4 are as follows: the impregnated timber after being done by gas is from room temperature to 40 DEG C ~ 60 DEG C, and 1h ~ 24h is kept at temperature is 40 DEG C ~ 60 DEG C, then temperature is warming up to 60 DEG C ~ 80 DEG C by 40 DEG C ~ 60 DEG C, and 1h ~ 24h is kept at temperature is 60 DEG C ~ 80 DEG C, again temperature is warming up to 80 DEG C ~ 100 DEG C by 60 DEG C ~ 80 DEG C, 1h ~ 24h is kept at temperature is 80 DEG C ~ 100 DEG C, finally temperature is warming up to 100 DEG C ~ 140 DEG C from 80 DEG C ~ 100 DEG C, and heat drying 12h ~ 48h is continued at temperature is 100 DEG C ~ 140 DEG C.
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| CN104760095B (en) * | 2015-03-30 | 2017-03-08 | 广西宾阳县荣良新材料科技有限公司 | The preparation method of preserved plywood |
| CN106577582A (en) * | 2016-10-12 | 2017-04-26 | 杭州市萧山区白蚁防治管理中心 | Anti-corrosion agent and method for bait wood in termite monitoring control device |
| CN106378843A (en) * | 2016-11-28 | 2017-02-08 | 赛为木业（石首）有限公司 | Furfuralcohol polymer impregnated wood material and preparation method thereof |
| CN107363945A (en) * | 2017-06-07 | 2017-11-21 | 常州市绿意管道有限公司 | A kind of preparation method of anticorrosive wood in the greening for garden landscape |
| CN107199612A (en) * | 2017-07-27 | 2017-09-26 | 合肥伊只门窗有限公司 | A kind of wooden door and window anticorrosive wood |
| CN107599092B (en) * | 2017-08-30 | 2020-12-01 | 广东省林业科学研究院 | Nitrogen hydroxymethyl ethylene urea resin modifier and application thereof |
| CN107856160A (en) * | 2017-11-13 | 2018-03-30 | 久盛地板有限公司 | The modified fast growing wood ground heating solid wooden floor board processing technology of dipping |
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| JP4291453B2 (en) * | 1999-03-26 | 2009-07-08 | 日本曹達株式会社 | Wood preservative |
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| CN1671525A (en) * | 2002-07-26 | 2005-09-21 | 木聚合物技术有限公司 | Furan polymer impregnated wood |
| CN1439499A (en) * | 2003-03-03 | 2003-09-03 | 广西三奇工贸有限责任公司 | Composition, preparation thereof and its application in post-treatment of wood |
| CN102320069A (en) * | 2011-09-22 | 2012-01-18 | 东北林业大学 | Brittleness inhibition method of chemical function improved wood |
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