CN101205454A - Wood-based panel adhesive using barks as raw material and preparation thereof - Google Patents
Wood-based panel adhesive using barks as raw material and preparation thereof Download PDFInfo
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- CN101205454A CN101205454A CNA200710144778XA CN200710144778A CN101205454A CN 101205454 A CN101205454 A CN 101205454A CN A200710144778X A CNA200710144778X A CN A200710144778XA CN 200710144778 A CN200710144778 A CN 200710144778A CN 101205454 A CN101205454 A CN 101205454A
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Abstract
The invention provides adhesive used in an artificial board taking bark as material and a preparation method thereof, relating to adhesive and a manufacturing method thereof. The invention solves the problems of short storage period, poor cementing property and long preparation cycle of the adhesive. The adhesive can be obtained through the reaction of liquefied product A, sodium hydroxide solution, formaldehyde solution and water, wherein the liquefied product A is obtained from the following materials of corresponding part by weight: 90 to 100 portions of phenol, 25 to 85 portions of bark powder and 1 to 15 portions of catalyst; moreover, according to weight ratio, the sodium hydroxide solution of 30 to 60 percent of concentration, the formaldehyde solution of 30 to 40 percent concentration and water respectively occupies 0.26 to 0.74percent, 0.5 to 2.1percent and 0.6 to 2.8percent of the liquefied product A. The method includes the following steps: the phenol, the bark powder and catalyst are adopted to react, thereby obtaining the liquefied product A; then, the sodium hydroxide solution, the formaldehyde solution and the water are added in the liquefied product A and are made into the adhesive after stirring and heating up. The invention can improve the performance of bark adhesive, shorten adhesive preparation cycle, and reduce the cost of the adhesive; meanwhile, the invention prevents the waste of biomass material resource and optimizes the environment.
Description
Technical field
The present invention relates to sizing agent and preparation method thereof.Relating in particular to the bark is wood-based plate sizing agent and preparation method thereof of raw material.
Background technology
Macromolecular material is a kind of indispensable material in people's productive life, relates to the every aspect of people's productive life and scientific technological advance.Yet the production of synthesized polymer material depends on limited, the non-renewable petroleum resources of reserves; Along with the consumption day by day of petroleum resources, synthesized polymer material will engender crisis of resource.For this reason, for the mankind's Sustainable development, the petroleum resources situation forces people constantly to seek and uses new, reproducible equivalent material.The utilization of the positive encourage growth Biological resources of the Chinese government, issued " general office of National Development and Reform Commission is about organizing and implementing the special notice of the biomass engineering industrialization of new high-technology " (send out and correct No. [2005] 2875, high skill) in 2005, to promote the technological innovation and the re-invent industry of biomass industries such as China's bioenergy, biomaterial, promote Chinese national economy and social sustainable development.Bark has the rich in natural resources reserves as natural macromolecular material.According to estimates, the volume content of bark is 15～20% of a timber, and weight is 10～15% of timber.Yet, as the industrial wood waste of forest product industry, the constituent complexity of bark, its physics-chem characteristic is because kind difference, the not equal reason difference of growth district and variability are very big, so the bark resource is not fully effectively utilized in the world as yet.Be rich in the bark of tannin except minority, as the joyous bark of alloy, bark of dahurian larch etc., be used to make outside tannin glue and the pharmacy by tannin composition or other medicinal ingredients that extracts wherein, perhaps a small amount of bark is developed outside the purposes such as being used to prepare feed, soil modifier, gac, penjing art product, all abandoned or the burnings and be not fully utilized of most barks.Disclosed (publication number: CN1786099) " with the bark for feedstock production wood-based plate with sizing agent and preparation method thereof " makes was that the wood-based plate of raw material is shorter with the storage period of sizing agent with the bark to the applicant on June 14th, 2006, generally be no more than 15, bonding property is relatively poor, the sizing agent preparation cycle is long, is difficult to satisfy the suitability for industrialized production requirement for this reason.
Summary of the invention
The present invention is that the wood-based plate of raw material is short with the storage period of sizing agent, bonding property is relatively poor, the sizing agent preparation cycle is long with the bark in order to solve existing, the problem that main components such as the Mierocrystalline cellulose of bark, lignin and hemicellulose are not fully utilized, providing a kind of is wood-based plate sizing agent and preparation method thereof of raw material with the bark, and the concrete technical scheme that addresses this problem is as follows:
The present invention utilizes bark to prepare the wood-based plate sizing agent, obtain by liquefied product A, sodium hydroxide solution, formaldehyde solution and water reaction, liquefied product A is obtained by 90～100 parts of phenol, 25～85 parts of tree bark powder, 1～15 part of reaction of catalyzer by weight, by weight concentration is that 30～60% sodium hydroxide solution, concentration are that 30～40% formaldehyde solution and water account for 0.26～0.74,0.5～2.1 and 0.6～2.8 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
The wood-based plate that with the bark is raw material is as follows with the preparation method's of sizing agent step:
Step 1, water ratio is broken into powder in the tree bark powder below 5%, particles of powder is of a size of 10～120 orders;
Step 2, get 90～100 parts of phenol and catalyzer by weight and join in the reactor for 1～8 part, stir and be warmed to 110～140 ℃;
Step 3, in the mixture that obtains through step 2, add tree bark powder 15～50 weight parts that obtain through step 1, in reactor, continue to mix, 110～140 ℃ of insulations 15～45 minutes down;
Step 4, the catalyzer that adds 0～7 weight part after step 3 in the mixture that obtains once more and total addition level are no more than the tree bark powder of 85 weight parts, the weight ratio of phenol and tree bark powder is 1.06～4: 1, after being incubated 1～4 hour under 120～170 ℃, be cooled to 60～80 ℃, make bark liquefied product A thus;
Step 5, to add the concentration account for liquefied product A gross weight 3%～20% in the liquefied product that obtains after step 4 be that 30～60% sodium hydroxide solution (first alkali) and the concentration that accounts for liquefied product A gross weight 50%～210% are 30～40% formaldehyde solution, stirring is also heated to 40 ℃～50 ℃, be incubated after 5～20 minutes, heat again keep 30～90 minutes to 60～70 ℃ after, heat once more to 85～95 ℃, be incubated 30～90 minutes;
Step 6, to add the concentration account for liquefied product A gross weight 30%～75% in the reaction product that obtains after step 5 be 30～60% sodium hydroxide solution (second batch of alkali) and the water (first water) that accounts for liquefied product A gross weight 30%～100%, reach 120～200s (being coated with-4 glasss, 25 ℃) in 70～85 ℃ of reactions up to viscosity;
Step 7, add the water (second batch of water) that accounts for liquefied product A gross weight 30%～100% to the elementary glue that in step 6, obtains, be controlled at 40～130s in 70～85 ℃ of reactions up to the terminal point viscosity and (be coated with-4 glasss, 25 ℃), be cooled to below 40 ℃, promptly having made is the wood-based plate sizing agent of raw material with the bark.
Of the present invention is the wood-based plate step of manufacturing two of sizing agent and the catalyzer in the step 4 of raw material with the bark, adopts toluenesulphonic acids-phosphoric acid-sulfuric acid complex liquid, and toluenesulphonic acids-phosphoric acid-vitriolic weight ratio is 0～5: 0.2～5: 1.
The present invention can make the main components such as Mierocrystalline cellulose, lignin and hemicellulose of bark obtain more abundant effective utilization, has reduced the cost of sizing agent, has avoided the waste of biological material resource and has optimized environment.This method curing speed is accelerated, and has shortened the preparation cycle of sizing agent; Increase greater than 30 days, Joint strength the storage period of prepared sizing agent.Be suitable for preparation and meet the E0 level I class glued board glue that standard GB/T 9846.3-2004 requires.
Embodiment
Embodiment one: present embodiment utilizes bark to prepare the wood-based plate sizing agent, it is obtained by liquefied product A, sodium hydroxide solution, formaldehyde solution and water reaction, liquefied product A is obtained by 90～100 parts of phenol, 25～85 parts of tree bark powder, 1～15 part of reaction of catalyzer by weight, by weight concentration is that 30～60% sodium hydroxide solution, concentration are that 30～40% formaldehyde solution and water account for 0.26～0.74,0.5～2.1 and 0.6～2.8 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
Embodiment two: the liquefied product A of present embodiment adopts 7 parts of toluenesulphonic acids-phosphoric acid of 1: 0.5: 1 of weight ratio-sulfuric acid complex liquid by 90 parts of phenol, 85 parts of tree bark powder, catalyzer by weight, obtain through reaction, by weight concentration is that 45% sodium hydroxide solution, concentration are that 37% formaldehyde solution, water account for 0.62,0.85,2.5 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
Embodiment three: the liquefied product A of present embodiment adopts 5 parts of toluenesulphonic acids-phosphoric acid of 1: 1: 1 of weight ratio-sulfuric acid complex liquid by 100 parts of phenol, 40 parts of tree bark powder, catalyzer by weight, obtain through reaction, by weight concentration is that 50% sodium hydroxide solution, concentration are that 35% formaldehyde solution, water account for 0.50,1.27,1.42 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
Embodiment four: the liquefied product A of present embodiment adopts 3 parts of toluenesulphonic acids-phosphoric acid of 2: 1: 1 of weight ratio-sulfuric acid complex liquid by 100 parts of phenol, 25 parts of tree bark powder, catalyzer by weight, obtain through reaction, by weight concentration is that 50% sodium hydroxide solution, concentration are that 37% formaldehyde solution, water account for 0.56,1.42,1.44 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
Embodiment five: it is as follows with the step of the method for sizing agent that present embodiment utilizes bark to prepare wood-based plate:
Step 1, water ratio is broken into powder in the tree bark powder below 5%, particles of powder is of a size of 10～120 orders;
Step 2, getting 90～100 parts of phenol and catalyzer by weight, to adopt weight ratio be 0～5: 0.2～5: toluenesulphonic acids-phosphoric acid of 1-sulfuric acid complex liquid adds in the reactor that has thermometer, agitator, condensing reflux for 1～8 part, stirs and is warmed to 110～140 ℃ gradually;
Step 3, to the stirring that obtains through step 2 and the tree bark powder of adding 15～50 weight parts that obtain through step 1 in the phenol after heating, mixture of catalysts, in reactor, continue to stir, make the complete and reaction liquid thorough mixing of tree bark powder, be incubated 15～45 minutes down at 110～140 ℃;
Step 4, the catalyzer that adds 0～7 weight part after step 3 in the mixture of the phenol that obtains, catalyzer, tree bark powder once more and total addition level are no more than the tree bark powder of 85 weight parts, (tree bark powder that this stage added should portion-wise addition, and the weight ratio of control phenol and tree bark powder is 1.06～4: 1; Will add catalyzer before each adding tree bark powder, catalyzer adds total amount and is no more than 7 weight parts), be cooled to 60～80 ℃ in insulation under 120～170 ℃ after 1～4 hour, make bark liquefied product A thus;
Step 5, to add the concentration account for liquefied product A gross weight 3%～20% in the liquefied product A that obtains after step 4 be that 30～60% sodium hydroxide solution (first alkali) and the concentration that accounts for liquefied product A gross weight 50%～210% are 30～40% formaldehyde solution, stirring is also heated to 40 ℃～50 ℃, be incubated after 5～20 minutes, heat again keep 30～90 minutes to 60～70 ℃ after, heat once more to 85～95 ℃, be incubated 30～90 minutes;
Step 6, to add the concentration account for liquefied product A gross weight 30%～75% in the reaction product that obtains after step 5 be 30～60% sodium hydroxide solution (second batch of alkali) and the water (first water) that accounts for liquefied product A gross weight 30%～100%, reach 120～200s (being coated with-4 glasss, 25 ℃) in 70～85 ℃ of reactions up to viscosity;
Step 7, add the water (second batch of water) that accounts for liquefied product A gross weight 30%～100% to the elementary glue that in step 6, obtains, be controlled at 40～130s in 70～85 ℃ of reactions up to the terminal point viscosity and (be coated with-4 glasss, 25 ℃), be cooled to below 40 ℃, promptly made bark wood-based plate sizing agent.
Above-mentioned wood-based plate by adding alkali number and viscosity in the CONTROL PROCESS process, can prepare the sizing agent of different performance with the preparation of sizing agent.For the glued board sizing agent, viscosity is controlled at 90～130s (being coated with-4 glasss, 25 ℃); Use sizing agent for fibre board use sizing agent, ordinary particle board with sizing agent or oriented wood chipboard (OSB), viscosity should be controlled at 40～60s (being coated with-4 glasss, 25 ℃).No matter make which kind of sizing agent, the solids content of sizing agent should be controlled between 35～50%.
Disclosed (publication number: CN1786099) " with the bark for feedstock production wood-based plate with sizing agent and preparation method thereof " compared on June 14th, 2006 with the applicant in the embodiment five, it is 0～5: 0.2～5 that catalyzer in step 2 and the step 4 adopts weight ratio: toluenesulphonic acids-phosphoric acid of 1-sulfuric acid complex liquid, make the add-on of bark fines bring up to 76～85 weight parts from 35～75 weight parts, and in step 4, can adopt higher liquefaction temperature (being elevated to 151～170 ℃) by 120～150 ℃, the active liquid of bark liquefied product A is increased, and then the weight ratio scope of formaldehyde and bark liquefied product A is increased to 1.66～2.1 from 0.8～1.65 in the permission adhesive-preparing technology, and the hold-time in the permission step 5 shortened to 30～59 minutes from 60～90 minutes, the sodium hydroxide solution span in the step 6 is increased to 13%～20% from 8.5%～12.5%.
Disclosed (publication number: CN1786099) " with the bark for feedstock production wood-based plate with sizing agent and preparation method thereof " compared on June 14th, 2006 with the applicant in the embodiment five, the addition of the sodium hydroxide solution of 30～60% in the step 6 has been increased to 36%～75% from 15%～35%, only add not hydro-oxidation sodium solution of water in the step 7, thus under the quality that guarantees the bark sizing agent, permission reduces bark gumminess scope and is reduced to 120～159s from 160～200s in step 6, therefore shortened the preparation cycle of sizing agent, obviously prolonged the storage period of prepared sizing agent, the Joint strength of sizing agent also increases, curing speed is accelerated.
Embodiment six: the difference of present embodiment and embodiment five is that the add-on of bark fines in the step 2 is 76～85 weight parts.Other step is identical with embodiment five.
Embodiment seven: the difference of present embodiment and embodiment five is the catalyzer in step 2 and the step 4, adopts toluenesulphonic acids-phosphoric acid-sulfuric acid complex liquid, and toluenesulphonic acids-phosphoric acid-vitriolic weight ratio is 0～5: 0.2～5: 1.Other step is identical with embodiment five.
Embodiment eight: the difference of present embodiment and embodiment five is that the hold-time in the step 5 is 30～59 minutes.Other step is identical with embodiment five.
Embodiment nine: the difference of present embodiment and embodiment five is in the step 6 to add the concentration that accounts for liquefied product A gross weight 36%～75% in the reaction product that obtains after step 5 be 30～60% sodium hydroxide solution.Other step is identical with embodiment five.
Embodiment ten: the difference of present embodiment and embodiment five is in the step 6 to add the concentration that accounts for liquefied product A gross weight 30%～75% in the reaction product that obtains after step 5 be 30～60% sodium hydroxide solution.The difference of present embodiment and embodiment five is that step 2 gets 100 parts of phenol by weight, 3 parts of weight ratios are that toluenesulphonic acids-phosphoric acid-sulfuric acid complex liquid of 1: 1: 1 is a catalyzer, step 3 is got 20 parts bark of dahurian larch powder, it is that toluenesulphonic acids-phosphoric acid-sulfuric acid complex liquid of 1: 1: 1 is a catalyzer that step 4 is got 2 parts of weight ratios, 20 parts in bark of dahurian larch powder, and reaction obtains 138.6 parts of liquefied product A, it is that 45% sodium hydroxide solution and 207 parts of concentration are 36% formaldehyde solution that step 5 is got 13.9 parts of concentration, it is 45% sodium hydroxide solution and 121 parts water that step 6 is got 63.2 parts of concentration, and step 7 is got 52 parts water, viscosity reaches 100s.Be fit to preparation glued board sizing agent.Other step is identical with embodiment five.
By storage period of embodiment ten prepared bark sizing agents greater than 30 days, Joint strength increases, and curing speed is faster than pure P-F tackiness agent, and this glue is suitable for preparation and satisfies the E0 level I class waterproof pluwood that standard GB/T 9846.3-2004 requires.
The bark tackiness agent (J-2) of patent application of the present invention and pure modified phenolic adhesive (J-0) and adopt disclosed (publication number: CN1786099) " with the bark for feedstock production wood-based plate with sizing agent and preparation method thereof " bark tackiness agent (J-1) of making, the over-all properties such as the table 1 that record under the same conditions on June 14th, 2006.
Table 1:
| The tackiness agent kind | Solid content (%) | Curing speed (s) | Storage period (my god) | Wet shearing resistance (MPa) | Free formaldehyde release (mg/L) |
| J-0 J-1 J-2 | 40.08 38.43 38.90 | 471 392 390 | ＞60 16 40 | 1.08 1.01 1.09 | 0.139 0.385 0.382 |
Claims (10)
1. with the bark wood-based plate sizing agent of raw material, it is obtained by liquefied product A, sodium hydroxide solution, formaldehyde solution and water reaction, it is characterized in that liquefied product A is obtained by 90～100 parts of phenol, 25～85 parts of tree bark powder, 1～15 part of reaction of catalyzer by weight, by weight concentration is that 30～60% sodium hydroxide solution, concentration are that 30～40% formaldehyde solution and water account for 0.26～0.74,0.5～2.1 and 0.6～2.8 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
2. according to claim 1 is the wood-based plate sizing agent of raw material with the bark, it is characterized in that liquefied product A adopts 7 parts of toluenesulphonic acids-phosphoric acid of 1: 0.5: 1 of weight ratio-sulfuric acid complex liquid by 90 parts of phenol, 85 parts of tree bark powder, catalyzer by weight, obtain through reaction, by weight concentration is that 45% sodium hydroxide solution, concentration are that 37% formaldehyde solution, water account for 0.62,0.85,2.5 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
3. according to claim 1 is the wood-based plate sizing agent of raw material with the bark, it is characterized in that liquefied product A adopts 5 parts of toluenesulphonic acids-phosphoric acid of 1: 1: 1 of weight ratio-sulfuric acid complex liquid by 100 parts of phenol, 40 parts of tree bark powder, catalyzer by weight, obtain through reaction, by weight concentration is that 50% sodium hydroxide solution, concentration are that 35% formaldehyde solution, water account for 0.50,1.27,1.42 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
4. according to claim 1 is the wood-based plate sizing agent of raw material with the bark, it is characterized in that liquefied product A adopts 3 parts of toluenesulphonic acids-phosphoric acid of 2: 1: 1 of weight ratio-sulfuric acid complex liquid by 100 parts of phenol, 25 parts of tree bark powder, catalyzer by weight, obtain through reaction, by weight concentration is that 50% sodium hydroxide solution, concentration are that 37% formaldehyde solution, water account for 0.56,1.42,1.44 of liquefied product A respectively, is stirring and is heating down that reaction obtains.
5. prepare the described method that with the bark is the wood-based plate of raw material with sizing agent of claim 1, it is characterized in that the step of this method is as follows:
Step 1, water ratio is broken into powder in the tree bark powder below 5%, particles of powder is of a size of 10～200 orders;
Step 2, get 90～100 parts of phenol and catalyzer by weight and join in the reactor for 1～8 part, stir and be warmed to 110～140 ℃;
Step 3, in the mixture that obtains through step 2, add tree bark powder 15～50 weight parts that obtain through step 1, in reactor, continue to mix, 110～140 ℃ of insulations 15～45 minutes down;
Step 4, the catalyzer that adds 0～7 weight part after step 3 in the mixture that obtains once more and total addition level are no more than the tree bark powder of 85 weight parts, the weight ratio of control phenol and tree bark powder is 1.06～4: 1, after being incubated 1～4 hour under 120～170 ℃, be cooled to 60～80 ℃, make bark liquefied product A thus;
Step 5, to add the concentration account for liquefied product A gross weight 3%～20% in the liquefied product A that obtains after step 4 be that 30～60% sodium hydroxide solution and the concentration that accounts for liquefied product A gross weight 50%～210% are 30～40% formaldehyde solution, stirring is also heated to 40 ℃～50 ℃, be incubated after 5～20 minutes, heat again keep 30～90 minutes to 60～70 ℃ after, heat once more to 85～95 ℃, be incubated 30～90 minutes;
Step 6, to add the concentration account for liquefied product A gross weight 30%～75% in the reaction product that obtains after step 5 be 30～60% sodium hydroxide solution and the water that accounts for liquefied product A gross weight 30%～100%, reaches 120～200s in 70～85 ℃ of reactions up to viscosity;
Step 7, add the water that accounts for liquefied product A gross weight 30%～100%, be controlled at 40～130s up to the terminal point viscosity, be cooled to below 40 ℃, promptly made bark wood-based plate sizing agent in 70～85 ℃ of reactions to the elementary glue that in step 6, obtains.
6. the preparation method who with the bark is the wood-based plate of raw material with sizing agent according to claim 5, the add-on that it is characterized in that bark fines in the step 2 is 76～85 weight parts
7. the preparation method who with the bark is the wood-based plate of raw material with sizing agent according to claim 5, it is characterized in that the catalyzer in step 2 and the step 4, adopt toluenesulphonic acids-phosphoric acid-sulfuric acid complex liquid, toluenesulphonic acids-phosphoric acid-vitriolic weight ratio is 0～5: 0.2～5: 1.
8. the preparation method who with the bark is the wood-based plate of raw material with sizing agent according to claim 5 is characterized in that the hold-time in the step 5 is 30～59 minutes.
9. according to claim 5 with the bark is the wood-based plate of raw material with the preparation method of sizing agent, it is characterized in that in the reaction product that after step 5, obtains, adding in the step 6 concentration that accounts for liquefied product A gross weight 36%～75% and be 30～60% sodium hydroxide solution.
10. described according to claim 5～8 is the preparation method of the wood-based plate usefulness sizing agent of raw material with the bark, it is characterized in that step 2 gets 100 parts of phenol by weight, tosic acid-phosphoric acid of 1: 1: 1 of 3 parts of weight ratios-sulfuric acid complex liquid is a catalyzer, step 3 is got 20 parts bark of dahurian larch powder, it is that toluenesulphonic acids-phosphoric acid-sulfuric acid complex liquid of 1: 1: 1 is a catalyzer that step 4 is got 2 parts of weight ratios, 20 parts in bark of dahurian larch powder, and reaction obtains 138.6 parts of liquefied product A, it is that 45% sodium hydroxide solution and 207 parts of concentration are 36% formaldehyde solution that step 5 is got 13.9 parts of concentration, it is 45% sodium hydroxide solution and 121 parts water that step 6 is got 63.2 parts of concentration, and step 7 is got 52 parts water, viscosity reaches 100s.
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200710144778XA CN101205454A (en) | 2007-12-07 | 2007-12-07 | Wood-based panel adhesive using barks as raw material and preparation thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200710144778XA CN101205454A (en) | 2007-12-07 | 2007-12-07 | Wood-based panel adhesive using barks as raw material and preparation thereof |
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| CN101205454A true CN101205454A (en) | 2008-06-25 |
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| CNA200710144778XA Pending CN101205454A (en) | 2007-12-07 | 2007-12-07 | Wood-based panel adhesive using barks as raw material and preparation thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693380B (en) * | 2009-09-29 | 2011-08-10 | 北华大学 | Straw particle board employing bark powder modified phenolic resins as adhesives |
| CN103788908A (en) * | 2013-12-25 | 2014-05-14 | 浙江农林大学天目学院 | Adhesive containing liquefied forest litter |
| CN109382887A (en) * | 2018-10-08 | 2019-02-26 | 中原工学院 | A kind of preparation method of environment-friendly type formaldehyde absorbing particieboard |
| CN109897596A (en) * | 2019-03-28 | 2019-06-18 | 贵州大学 | A kind of Chinese fir bark adhesive of artificial board |
| CN110546226A (en) * | 2017-04-25 | 2019-12-06 | 株式会社沃达王 | Adhesive agent |
| CN111961429A (en) * | 2020-07-07 | 2020-11-20 | 广西大学 | Preparation method of eucalyptus bark powder modified phenolic resin wood adhesive |
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2007
- 2007-12-07 CN CNA200710144778XA patent/CN101205454A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693380B (en) * | 2009-09-29 | 2011-08-10 | 北华大学 | Straw particle board employing bark powder modified phenolic resins as adhesives |
| CN103788908A (en) * | 2013-12-25 | 2014-05-14 | 浙江农林大学天目学院 | Adhesive containing liquefied forest litter |
| CN103788908B (en) * | 2013-12-25 | 2015-07-22 | 浙江农林大学天目学院 | Adhesive containing liquefied forest litter |
| CN110546226A (en) * | 2017-04-25 | 2019-12-06 | 株式会社沃达王 | Adhesive agent |
| CN110546226B (en) * | 2017-04-25 | 2022-05-06 | 株式会社沃达王 | Adhesive agent |
| CN109382887A (en) * | 2018-10-08 | 2019-02-26 | 中原工学院 | A kind of preparation method of environment-friendly type formaldehyde absorbing particieboard |
| CN109897596A (en) * | 2019-03-28 | 2019-06-18 | 贵州大学 | A kind of Chinese fir bark adhesive of artificial board |
| CN111961429A (en) * | 2020-07-07 | 2020-11-20 | 广西大学 | Preparation method of eucalyptus bark powder modified phenolic resin wood adhesive |
| CN111961429B (en) * | 2020-07-07 | 2022-04-12 | 广西大学 | Preparation method of eucalyptus bark powder modified phenolic resin wood adhesive |
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