CN101434080A - Waterglass-polymer homogeneous phase hybrid modified precursor liquid for lumber and preparation method thereof - Google Patents
Waterglass-polymer homogeneous phase hybrid modified precursor liquid for lumber and preparation method thereof Download PDFInfo
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- CN101434080A CN101434080A CNA2008102405238A CN200810240523A CN101434080A CN 101434080 A CN101434080 A CN 101434080A CN A2008102405238 A CNA2008102405238 A CN A2008102405238A CN 200810240523 A CN200810240523 A CN 200810240523A CN 101434080 A CN101434080 A CN 101434080A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000002243 precursor Substances 0.000 title claims abstract description 22
- 229920000642 polymer Polymers 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 title claims description 28
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 27
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 23
- 229920001477 hydrophilic polymer Polymers 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000004048 modification Effects 0.000 claims abstract description 18
- 238000012986 modification Methods 0.000 claims abstract description 18
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 12
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 8
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 8
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 5
- 239000004640 Melamine resin Substances 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 5
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 5
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 5
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical group CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims description 4
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract 1
- 239000004566 building material Substances 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 29
- 238000000034 method Methods 0.000 description 12
- 239000002023 wood Substances 0.000 description 12
- 238000007654 immersion Methods 0.000 description 7
- 239000002131 composite material Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229940068984 polyvinyl alcohol Drugs 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 3
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 206010011376 Crepitations Diseases 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- SOROIESOUPGGFO-UHFFFAOYSA-N diazolidinylurea Chemical compound OCNC(=O)N(CO)C1N(CO)C(=O)N(CO)C1=O SOROIESOUPGGFO-UHFFFAOYSA-N 0.000 description 1
- 229960001083 diazolidinylurea Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000002803 maceration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
- 235000019786 weight gain Nutrition 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
The invention discloses water glass-polymer homogeneous hybrid timber modification precursor solution and a preparation method thereof, which belongs to the technical field of timber modification in building materials. The prior silicate timber modification solution has poor leachability resistance, large brittleness of modified timber and so on. The modification solution comprises components with the following content: 23 to 50 weight percent of water glass, 0.2 to 4.2 weight percent of hydrophilic polymer, 0.3 to 2.6 weight percent of crosslinking agent, and 45 to 75 weight percent of water. Hydrophilic polymer solution is obtained by adding the hydrophilic polymer into water and stirring the hydrophilic polymer to be dissolved at a temperature of between 30 and 90 DEG C, then the hydrophilic polymer and the water glass are stirred and mixed at a temperature of between 30 and 80 DEG C, and the crosslinking agent is added to continuously stir for 1 to 3 hours to obtain the water glass-polymer homogeneous hybrid timber modification solution. The modification solution has the advantages of low cost, environmental protection, good leachability resistance and so on.
Description
Technical field
The invention belongs to Wooden modifying technical field in the construction material, be specifically related to a kind of homogeneous phase inorganic-organic hybridization Wooden modifying precursor liquid that is composited with waterglass and hydrophilic polymer and preparation method thereof.
Background technology
Timber is the natural reproducible resource unique in " four great traditions " material (iron and steel, cement, plastics, timber) and the green material and the living resources of recycling.Face the mankind to the continuous increase of timber demand and the contradiction of timber resources critical shortage, many in the world countries are establishing in large scale artificial forest all, has guaranteed the supply of timber.But compare with wildwood timber, artificial forest wood density is low, and material is soft, and physical and mechanical property is relatively poor, moisture content height and skewness, and the wood color dullness easily produces dry-shrinkage deformedly, generally is difficult to directly to use as structural wood and ornament materials.
One of the approach that artificial timber is carried out modification is for carrying out impregnation process.The organic matter precursor liquid of having reported is Lauxite, phenolic resins, melamine resin etc. mostly, and Diazolidinyl Urea behind these organic matter precursor liquids processing timber works the mischief to environment and human body.
Though the method that adopts the inorganic silicate precursor liquid to handle can improve hardness, intensity, anti-flammability and the wearability etc. of timber, the fragility of timber increases, and toughness descends, and has influenced the feel of material; After simple waterglass carried out Wooden modifying, the alkaline silica gel rete fragility that forms with timber was bigger, and the generation of small molecule by-product water is arranged in the process of film forming, and many crackles can appear in its gel mould; Adopt waterglass and the sedimentary resistance leachability of dissolved salt is not relatively poor, the wood performance after the modification can not be lasting.
Existing inorganic-organic composite modified precursor liquid is the mixture of various ingredients, has microphase-separated between each component, thereby makes its bad stability because of recycling in the Wooden modifying process.
Summary of the invention
The object of the invention is to solve the problems of the prior art, and waterglass-polymer homogeneous phase hybrid Wooden modifying precursor liquid of a kind of waterglass and organic polymer formation and preparation method thereof is provided.
The component and the content thereof of waterglass provided by the present invention-polymer homogeneous phase hybrid modification precursor liquid are: waterglass 23～50wt%, hydrophilic polymer 0.2～4.2wt%, crosslinking agent 0.3～2.6wt% and water 45～75wt%;
Wherein, described waterglass comprises sodium silicate, KP1 or by one or more the mixing in the Ludox of waterglass preparation; Described hydrophilic polymer is selected from one or more the mixing in polyacrylamide, Sodium Polyacrylate, polyethylene glycol, polyvinyl alcohol, hydroxyethylcellulose or the carboxymethyl cellulose; Described crosslinking agent is epoxychloropropane, melamine resin or N, the mixing of one or more in the N-methylene-bisacrylamide.
The preparation method of waterglass provided by the present invention-polymer homogeneous phase hybrid Wooden modifying precursor liquid may further comprise the steps:
1) dissolving hydrophilic polymer: under the room temperature hydrophilic polymer is added in the entry, in 30～90 ℃ of following stirring and dissolving, obtaining mass concentration is the hydrophilic polymer aqueous solution of 0.2～10.0wt%;
2) preparation waterglass-polymer homogeneous phase hybrid modification precursor liquid: with the hydrophilic polymer aqueous solution of step 1) preparation and waterglass after mixing under 30～80 ℃, add crosslinking agent, continue to stir 1～3h, obtain waterglass-polymer homogeneous phase hybrid Wooden modifying precursor liquid; In the precursor liquid, the shared percentage composition of hydrophilic polymer, waterglass and crosslinking agent is respectively 0.2～4.2wt%, 23～50wt% and 0.3～2.6wt%.
Compared with prior art, the invention has the advantages that:
1) raw material sources of the present invention are extensive, and are cheap.
2) of the present invention preparation is simple, be applicable to suitability for industrialized production.
3) used waterglass and hydrophilic polymer can not discharge harmful components in the raw material of the present invention, used cross-linked dosage seldom, functional group generation cross-linking reaction in the precursor liquid preparation process in crosslinking agent and the raw material, can not discharge organic molecule, if carry out can not polluting after the treating of wood modification to environment yet.
4) waterglass-polymer homogeneous phase hybrid modification precursor liquid of the present invention preparation is the hydridization solution of homogeneous stability, has interface affinity preferably with timber, and solution viscosity lower, be easy to carry out the virgin wood impregnation process, reusable; And, by polymer the modification of waterglass is handled, improved the big shortcoming of waterglass fragility; Waterglass and hydrophilic polymer in the waterglass-polymer homogeneous phase hybrid modification precursor liquid of the present invention's preparation by the crosslinked action of crosslinking agent, can overcome the water leachability problem that two kinds of components cause because of hydrophily.
The invention will be further described below in conjunction with the specific embodiment, but protection scope of the present invention is not limited only to the content of following embodiment.
The specific embodiment
Embodiment 1
1) in reactor, under the room temperature 4.2g Sodium Polyacrylate is dissolved in the 95.8g water, fully stirs down, form transparent homogeneous phase solution at 90 ℃;
2) the 100g sodium polyacrylate solution of step 1) preparation and the sodium silicate of 29.8g are mixed under 30 ℃ of conditions, after fully stirring, add 3.48g N, the N-methylene-bisacrylamide, continue to stir 1h again, clarified, the waterglass-Sodium Polyacrylate hydridization solution of homogeneous phase.
The viscosity of this solution is 56mPas, and the solubility in water behind the immersion 24h is 3.5%.
Embodiment 2
1) in reactor, under the room temperature 0.2g Sodium Polyacrylate is dissolved in the 99.8g water, fully stirs down, form transparent homogeneous phase solution at 30 ℃;
2) 100g sodium polyacrylate solution and the 100g sodium silicate with the step 1) preparation mixes under 80 ℃ of conditions, after fully stirring, add 6.01g N, the N-methylene-bisacrylamide, continue to stir 3h again, clarified, the waterglass-Sodium Polyacrylate hydridization solution of homogeneous phase.
The viscosity of this solution is 63mPas, and the solubility in water behind the immersion 24h is 2.7%.
Embodiment 3
1) in reactor, under the room temperature 3.0g Sodium Polyacrylate is dissolved in the 97.0g water, fully stirs down, form transparent homogeneous phase solution at 60 ℃;
2) 100g sodium polyacrylate solution and the 60g sodium silicate with the step 1) preparation mixes under 80 ℃ of conditions, after fully stirring, add 4.5g N, the N-methylene-bisacrylamide, continue to stir 2h again, clarified, the waterglass-Sodium Polyacrylate hydridization solution of homogeneous phase.
The viscosity of this solution is 89mPas, and the solubility in water behind the immersion 24h is 1.7%.
Embodiment 4
1) in reactor, under the room temperature 0.5g carboxymethyl cellulose is dissolved in the 99.5g water, fully stirs down, form transparent homogeneous phase solution at 90 ℃;
2) 100g cmc soln and the 30g KP1 with the step 1) preparation mixes under 30 ℃ of conditions, after fully stirring, add the 0.23g melamine resin, continue again to stir 2.5h, clarified, the waterglass-carboxymethyl cellulose hydridization solution of homogeneous phase.
The viscosity of this solution is 76mPas, and the solubility in water behind the immersion 24h is 5.3%.
Embodiment 5
1) in reactor, under the room temperature 0.3g hydroxyethylcellulose is dissolved in the 99.7g water, fully stirs down, form transparent homogeneous phase solution at 50 ℃;
2) 100g hydroxy ethyl fiber cellulose solution and the 100g sodium silicate with step 1) preparation mixes under 70 ℃ of conditions, after fully stirring, adds the 0.30g epoxychloropropane, continues to stir 2h again, clarified, the waterglass-hydroxyethylcellulose hydridization solution of homogeneous phase
The viscosity of this solution is 67mPas, and the solubility in water behind the immersion 24h is 8.7%.
Embodiment 6
1) in reactor, under the room temperature 1.5g polyvinyl alcohol is dissolved in the 98.5g water, fully stirs down, form transparent homogeneous phase solution at 90 ℃;
2) 100g poly-vinyl alcohol solution and the 30g KP1 with step 1) preparation mixes under 60 ℃ of conditions, after fully stirring, adds the 0.50g melamine resin, continues to stir 1h again, clarified, the waterglass-polyvinyl alcohol hydridization solution of homogeneous phase
The viscosity of this solution is 77mPas, and the solubility in water behind the immersion 24h is 7.9%.
Embodiment 7
1) in reactor, under the room temperature 0.2g polyethylene glycol is dissolved in the 99.8g water, fully stirs down, form transparent homogeneous phase solution at 40 ℃;
2) 100g polyglycol solution and the 40g KP1 with step 1) preparation mixes under 80 ℃ of conditions, after fully stirring, adds the 0.25g epoxychloropropane, continues to stir 3h again, clarified, the waterglass-carboxymethyl cellulose hydridization solution of homogeneous phase
The viscosity of this solution is 69mPas, and the solubility in water behind the immersion 24h is 5.7%.
Adopt the waterglass-polymer homogeneous phase hybrid Wooden modifying precursor liquid for preparing among the embodiment 1-7 to carry out Wooden modifying and handle, concrete operations are as follows:
1) timber preliminary treatment: in electric drying oven with forced convection, in 103 ℃ ± 2 ℃ dry preliminary treatment after 8 hours, it is standby to be cooled to room temperature with raw material timber, and preliminary treatment can be removed the moisture in the timber pore, makes things convenient for the infiltration of composite wood modification liquid;
2) timber pickling is handled: the pretreated wood sample of drying is placed process tank, be evacuated to 0.03MPa～0.08MPa, take out the timber gas inside, make the Wooden modifying precursor liquid suck process tank in putting the process of vacuum; After injecting maceration extract in the jar, the removal vacuum is forced into 0.08MPa～1.2MPa at leisure, keeps 60min～90min, and after reaching dipping and requiring, the processing precursor liquid is emitted in release from process tank, timber is taken out in jar;
3) ageing processing procedure: after dipping finishes, scrape off the residual liquid of wood surface, and under room temperature, placed 2 hours;
4) baking and curing processing procedure: the timber after the ageing is put into baking oven, handled 4 hours, promptly finish Wooden modifying at 103 ℃ ± 2 ℃ dry solidifications.The every performance indications of composite wood after the impregnation process are as shown in table 1, and performances such as the rate of body weight gain of composite wood, resistance to compression, bending resistance all are greatly improved.
The performance of the composite wood after the precursor liquid modification that table 1 employing embodiment 1-6 makes
Claims (2)
1, a kind of waterglass-polymer homogeneous phase hybrid Wooden modifying liquid is characterized in that the component of described modification liquid and content thereof are: waterglass 23～50wt%, hydrophilic polymer 0.2～4.2wt%, crosslinking agent 0.3～2.6wt% and water 45～75wt%;
Wherein, described waterglass comprises sodium silicate, KP1 or by one or more the mixing in the Ludox of waterglass preparation; Described hydrophilic polymer is selected from one or more the mixing in polyacrylamide, Sodium Polyacrylate, polyethylene glycol, polyvinyl alcohol, hydroxyethylcellulose or the carboxymethyl cellulose; Described crosslinking agent is epoxychloropropane, melamine resin or N, the mixing of one or more in the N-methylene-bisacrylamide.
2, the preparation method of a kind of waterglass according to claim 1-polymer homogeneous phase hybrid Wooden modifying liquid is characterized in that, may further comprise the steps:
1) dissolving hydrophilic polymer: under the room temperature hydrophilic polymer is added in the entry, in 30～90 ℃ of following stirring and dissolving, obtaining mass concentration is the hydrophilic polymer aqueous solution of 0.2～10.0wt%;
2) preparation waterglass-polymer homogeneous phase hybrid modification precursor liquid: with the hydrophilic polymer aqueous solution of step 1) preparation and waterglass after mixing under 30～80 ℃, add crosslinking agent, continue to stir 1～3h, obtain waterglass-polymer homogeneous phase hybrid Wooden modifying liquid; In waterglass-polymer homogeneous phase hybrid Wooden modifying liquid, the shared percentage composition of hydrophilic polymer, waterglass and crosslinking agent is respectively 0.2～4.2wt%, 23～50wt% and 0.3～2.6wt%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102405238A CN101434080B (en) | 2008-12-19 | 2008-12-19 | Waterglass-polymer homogeneous phase hybrid modified precursor liquid for lumber and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102405238A CN101434080B (en) | 2008-12-19 | 2008-12-19 | Waterglass-polymer homogeneous phase hybrid modified precursor liquid for lumber and preparation method thereof |
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| Publication Number | Publication Date |
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| CN101434080A true CN101434080A (en) | 2009-05-20 |
| CN101434080B CN101434080B (en) | 2011-05-04 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862540A (en) * | 2014-02-27 | 2014-06-18 | 李海滨 | Method for reinforcing and modifying bamboo willow wood |
| CN104647500A (en) * | 2013-11-19 | 2015-05-27 | 黄培伟 | Impregnation liquid used for processing of rubber-wood heated floor |
| CN106966628A (en) * | 2017-04-17 | 2017-07-21 | 武汉理工大学 | A kind of spacetabs type Quadrafos curing agent and preparation method thereof and its application in waterglass cured product is prepared |
| CN109159226A (en) * | 2018-09-13 | 2019-01-08 | 中南林业科技大学 | A kind of method of inorganic coagulation material strengthened artificial forest timber |
| CN110281333A (en) * | 2019-06-12 | 2019-09-27 | 广州市北林林产工业有限公司 | A kind of drying of wood anti-cracking agent and the method for carrying out anticracking processing using it |
| CN110815462A (en) * | 2019-11-18 | 2020-02-21 | 中国林业科学研究院木材工业研究所 | Treatment method of impregnated rubber wood |
-
2008
- 2008-12-19 CN CN2008102405238A patent/CN101434080B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647500A (en) * | 2013-11-19 | 2015-05-27 | 黄培伟 | Impregnation liquid used for processing of rubber-wood heated floor |
| CN104647500B (en) * | 2013-11-19 | 2017-04-12 | 黄培伟 | Impregnation liquid used for processing of rubber-wood heated floor |
| CN103862540A (en) * | 2014-02-27 | 2014-06-18 | 李海滨 | Method for reinforcing and modifying bamboo willow wood |
| CN103862540B (en) * | 2014-02-27 | 2017-05-24 | 李海滨 | Method for reinforcing and modifying bamboo willow wood |
| CN106966628A (en) * | 2017-04-17 | 2017-07-21 | 武汉理工大学 | A kind of spacetabs type Quadrafos curing agent and preparation method thereof and its application in waterglass cured product is prepared |
| CN109159226A (en) * | 2018-09-13 | 2019-01-08 | 中南林业科技大学 | A kind of method of inorganic coagulation material strengthened artificial forest timber |
| CN109159226B (en) * | 2018-09-13 | 2020-09-25 | 中南林业科技大学 | Method for strengthening wood of artificial forest by inorganic cementing material |
| CN110281333A (en) * | 2019-06-12 | 2019-09-27 | 广州市北林林产工业有限公司 | A kind of drying of wood anti-cracking agent and the method for carrying out anticracking processing using it |
| CN110815462A (en) * | 2019-11-18 | 2020-02-21 | 中国林业科学研究院木材工业研究所 | Treatment method of impregnated rubber wood |
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Effective date of registration: 20181126 Address after: 102500 Beijing Fangshan District Yanshan Flow Water Industrial Zone Patentee after: Beijing Jialin Biotechnology Co., Ltd. Address before: 100096 Jinda Garden No. 2, Huilongguan, Changping District, Beijing, 4-301 Patentee before: Beijing Peier Maosen Technology Promotion Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20191219 |