CN100365091C - Phenolic resin glue for veneer board and its preparing method - Google Patents
Phenolic resin glue for veneer board and its preparing method Download PDFInfo
- Publication number
- CN100365091C CN100365091C CNB2006100667114A CN200610066711A CN100365091C CN 100365091 C CN100365091 C CN 100365091C CN B2006100667114 A CNB2006100667114 A CN B2006100667114A CN 200610066711 A CN200610066711 A CN 200610066711A CN 100365091 C CN100365091 C CN 100365091C
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- super absorbent
- absorbent resin
- phenolic resin
- glue
- resol
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- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
The present invention provides phenolic resin glue for veneer boards and a preparing method for the phenolic resin glue. The method adopts the following steps: super absorbent resin of which the weight is 0.02 to 0.8% of the weight of phenolic resin, and flour of which the weight is 10 to 20% of the weight of the phenolic resin are added in the phenolic resin; the super absorbent resin, the flour and the phenolic resin are added into a glue mixer; the super absorbent resin, the flour and the phenolic resin are stirred until the components are uniformly mixed. The present invention effectively prevents the phenomenon that in the process for producing veneer boards, a single board coated with glue is excessively aged, ensures that a single board coated with glue is aged for a long time under the conditions of strong wind and low humidity, and avoids the phenomena that the prepressing effect of a board blank is not good; after a veneer board is thermally pressed, the veneer board has tackless. The glue mixing technology of original phenolic resin is not changed fundamentally, the operation is simple and feasible, and the cost is low.
Description
Technical field
The present invention relates to a kind of adhesion agent for artificial board, relate in particular to a kind of phenolic resin glue for veneer board and modulator approach thereof.
Background technology
At present, most wood-based plate manufacturer adopts synvaren to produce weatherproof plywood.The resol that wherein most producers use is to adopt sodium hydroxide to make the water soluble phenol resin of catalytic production, and main raw material is phenol, formaldehyde and sodium hydroxide, and filled before using (flour commonly used) carries out impregnation.
There is thousands of plywood production producers in China, mats formation wherein by hand, the middle-size and small-size factory of assembly is in the great majority.Because the working condition restriction, a lot of midget plants adopt Phenol aldehyde resin in the weatherproof plywood production process, and the digestion time of remaining silent of blanket glued veneer is often very long, and what have can reach several hrs.Though in order to improve the tack of Phenol aldehyde resin, guarantee the precompressed effect, the flour that when the resol impregnation, has all added 10-20%, but under the situation big at wind, that humidity is low, it is excessive that long ageing often makes the limit portion of blanket glued veneer ageing occur, cause slab precompressed effect bad, the situation of coming unglued also appears in glued board after the hot pressing often.
Summary of the invention
The objective of the invention is provides a kind of Phenol aldehyde resin and modulator approach thereof that is used for glued board at above problem, prevented that effectively the ageing of blanket glued veneer is excessive in the plywood production, even guarantee to carry out long ageing under blanket glued veneer is big at wind, humidity the is low situation, it is bad and the situation of coming unglued occurs behind plywood hot-pressing slab precompressed effect also can not occur.
For realizing the object of the invention, being modulated by following steps of phenolic resin glue for veneer board of the present invention forms: add super absorbent resin and flour in resol, then it is added in Glue mixer, be stirred to each component and mix.
Wherein, the consumption of super absorbent resin is the 0.02-0.8% of resol gross weight, and the consumption of flour is the 10-20% of resol gross weight.
Wherein resol can be water-soluble alkaline resol or modified phenolic resins.
Particularly, super absorbent resin can be the blend of natural polymer super absorbent resin or synthetic macromolecule super absorbent resin or natural polymer super absorbent resin and synthetic macromolecule high-hydroscopicity tree.
Particularly, the natural polymer super absorbent resin is selected from one or more in starch graft polyacrylate, starch grafted polyacrylamide, starch-grafted polyacrylonitrile hydrolyzed thing, starch-acrylic acid-acrylamide graft copolymer, starch carboxymethylation reaction thing, cellulose graft polyacrylate, cellulose graft polyacrylamide, the carboxymethyl cellulose reactant; The synthetic macromolecule super absorbent resin is selected from one or more in polyacrylate, polyacrylamide, acrylic acid-acrylamide copolymer, polyvinyl alcohol, the polyvinyl alcohol-acrylic acid graft copolymer.Every have the high moisture retention that absorbs and again adhesive solidification do not produced dysgenic super absorbent resin and can use.
The synvaren that carries out impregnation by the present invention has the following advantages:
1, because the super absorbent resin that adds in resol impregnation process has good water retention property, make when using urea-formaldehyde resin of the present invention or urea-formaldehyde resin adhesive to prepare glued board, even the digestion time of blanket glued veneer was above 4 hours, still has good precompressed after its slab precompressed, prevent the phenomenon of coming unglued after the hot pressing, therefore effectively prevented the excessive ageing problem in the glued board preparation process;
2, the inventive method is simple and easy to do, does not change the impregnation technology of original resol substantially;
3, because the addition of additive super absorbent resin is very limited, only be resol gross weight 0.02-0.8%, the cost increase that therefore makes resol or Phenol aldehyde resin seldom is very easy to popularization.
Embodiment
Embodiment 1
1, by weight ratio: 100 parts in water-soluble alkaline resol, 0.02 part of sodium polyacrylate super absorbent resin, flour are got the raw materials ready for 15 parts;
2, the above-mentioned resol of getting ready, sodium polyacrylate super absorbent resin, flour are added in the Glue mixer, stir about 20 minutes mixes to each component.
Above-mentioned water-soluble alkaline resol can prepare with following method:
1, reactor is warming up to 50 ℃, adds preheating good 400 kilograms in 500 kilograms of phenol, water and concentration and be 250 kilograms of 40% sodium hydroxide solutions, start and stirred 10 minutes;
2, slowly adding concentration is 690 kilograms of 37% formaldehyde solutions, is warming up to 90 ± 2 ℃;
3,90 ± 2 ℃ of insulations 50 minutes, be cooled to 70 ℃;
4, slowly add 179 kilograms in formaldehyde in reactor, concentration is 50 kilograms of 40% sodium hydroxide solutions, is warming up to 92 ± 2 ℃ in 10 minutes, constantly viscosimetric;
5, react to viscosity: 20 ℃, be coated with-4 glasss of 30-32 after second, be cooled to 40 ℃ immediately, discharging.
The resol quality index:
Solids content 40.-46%
Viscosity (20 ℃) 100-200mPas
Free formaldehyde content＜0.1%
Free-phenol content＜0.1%
Storage period＞February
The resol that the present invention was suitable for is not limited to above-mentioned example, is equally applicable to water soluble phenol resin and Modified Water Soluble Phenolic Resin that factory generally uses.Modified Water Soluble Phenolic Resin can be modification copolycondensation phenolic resins such as urea, trimeric cyanamide, tannin, also can be Modified Water Soluble Phenolic Resin such as soybean protein, Pericarppium arachidis hypogaeae hydrolyzate.
Embodiment 2
1, by weight ratio: 100 parts in resol, 0.2 part of sodium polyacrylate super absorbent resin, flour are got the raw materials ready for 15 parts;
2, the above-mentioned resol of getting ready, sodium polyacrylate super absorbent resin, flour are added in the Glue mixer, stirred 20 minutes, mix to each component.
Embodiment 3
1, by weight ratio: 100 parts in resol, 0.8 part of sodium polyacrylate super absorbent resin, flour are got the raw materials ready for 15 parts;
2, the above-mentioned resol of getting ready, sodium polyacrylate super absorbent resin, flour are added in the Glue mixer, stirred 20 minutes, mix to each component.
Comparative example 1-3
Except not adding the super absorbent resin, other are identical with embodiment 1-3 technology respectively.
Experimental example
Adopt respectively that embodiment of the invention 1-3 and the synthetic Phenol aldehyde resin of comparative example 1-3 carry out the veneer gluing, mat formation, ageing, precompressed, hot pressing.Prepare 3 layers of glued board by following processing condition and parameter:
Applying glue: central layer gluing, Amount of spread are 220～280g/m
2
Ageing: 4 hours time;
Precompressed: pressure 0.8-1.0MPa, 30 minutes time.
Hot pressing: 130 ℃-140 ℃ of temperature, pressure 1.5-1.8MPa, time 70s/mm.
Contrast use these Phenol aldehyde resins apply veneers and ageing after 4 hours slab precompressed effect and the bonding property after the hot pressing, experimental result is as shown in table 1.
Table 1 slab precompressed effect and bonding property
| Test specimen | The precompressed effect | Bonding property |
| Embodiment 1 | ○ | ○ |
| Embodiment 2 | ○ | ○ |
| Embodiment 3 | ○ | ○ |
| Comparative example 1 | × | △ |
| Comparative example 2 | × | △ |
| Comparative example 3 | × | △ |
Annotate: zero: good (slab upset do not loose base, do not have the phenomenon of coming unglued),
△: general (the slab upset the slight base phenomenon of loosing occurs, the phenomenon of coming unglued is individually arranged);
*: bad (the slab upset the diffusing base phenomenon of big area occurs, comes unglued seriously).
Show thus, when using resol of the present invention or Phenol aldehyde resin to produce glued board, the precompressed effect and the bonding property of slab are all good, be base and the nothing phenomenon of coming unglued of not loosing in slab when upset, therefore effectively prevented the phenomenon of coming unglued that glued board occurs after the bad and hot pressing of the blanket glued veneer ageing excessively causes in the plywood production precompressed effect; Simultaneously, the present invention does not change the production technique of synvaren, and is simple and easy to do, and in addition because the consumption of additive super absorbent resin only is the 0.02-8% of resol total amount, so the cost increase seldom, is very easy to promote.
Claims (8)
1. the modulator approach of a phenolic resin glue for veneer board, it is characterized in that comprising step: in resol, add super absorbent resin and flour, then it is added in the Glue mixer, being stirred to each component mixes, wherein the consumption of super absorbent resin is the 0.02-0.8% of resol weight, and the consumption of described flour is the 10-20% of resol weight.
2. the modulator approach of phenolic resin glue for veneer board as claimed in claim 1 is characterized in that described resol is selected from water-soluble alkaline resol or modified phenolic resins.
3. the modulator approach of phenolic resin glue for veneer board as claimed in claim 1 or 2 is characterized in that described super absorbent resin is selected from the blend of natural polymer super absorbent resin, synthetic macromolecule super absorbent resin or natural polymer super absorbent resin and synthetic macromolecule high-hydroscopicity tree.
4. the modulator approach of phenolic resin glue for veneer board as claimed in claim 3 is characterized in that the natural polymer super absorbent resin is selected from one or more in starch graft polyacrylate, starch grafted polyacrylamide, starch-grafted polyacrylonitrile hydrolyzed thing, starch-acrylic acid-acrylamide graft copolymer, starch carboxymethylation reaction thing, cellulose graft polyacrylate, cellulose graft polyacrylamide, the carboxymethyl cellulose reactant; The synthetic macromolecule super absorbent resin is selected from one or more in polyacrylate, polyacrylamide, acrylic acid-acrylamide copolymer, polyvinyl alcohol, the polyvinyl alcohol-acrylic acid graft copolymer.
5. phenolic resin glue for veneer board, prepare by the following steps order: in resol, add super absorbent resin and flour, then it is added in the Glue mixer, being stirred to each component mixes, wherein the consumption of super absorbent resin is the 0.02-0.8% of resol weight, and the consumption of flour is the 10-20% of resol weight.
6. phenolic resin glue for veneer board as claimed in claim 5 is characterized in that described resol is selected from water-soluble alkaline resol or modified phenolic resins.
7. as claim 5 or 6 described phenolic resin glue for veneer board, it is characterized in that described super absorbent resin is selected from the blend of natural polymer super absorbent resin, synthetic macromolecule super absorbent resin or natural polymer super absorbent resin and synthetic macromolecule high-hydroscopicity tree.
8. phenolic resin glue for veneer board as claimed in claim 7 is characterized in that the natural polymer super absorbent resin is selected from one or more in starch graft polyacrylate, starch grafted polyacrylamide, starch-grafted polyacrylonitrile hydrolyzed thing, starch-acrylic acid-acrylamide graft copolymer, starch carboxymethylation reaction thing, cellulose graft polyacrylate, cellulose graft polyacrylamide, the carboxymethyl cellulose reactant; The synthetic macromolecule super absorbent resin is selected from one or more in polyacrylate, polyacrylamide, acrylic acid-acrylamide copolymer, polyvinyl alcohol, the polyvinyl alcohol-acrylic acid graft copolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100667114A CN100365091C (en) | 2006-04-05 | 2006-04-05 | Phenolic resin glue for veneer board and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100667114A CN100365091C (en) | 2006-04-05 | 2006-04-05 | Phenolic resin glue for veneer board and its preparing method |
Publications (2)
| Publication Number | Publication Date |
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| CN1821334A CN1821334A (en) | 2006-08-23 |
| CN100365091C true CN100365091C (en) | 2008-01-30 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424741B (en) * | 2011-09-15 | 2013-08-14 | 范会芳 | Compound glue film for full-bamboo container floor gluing and full-bamboo container floor |
| CN102672789B (en) * | 2012-06-14 | 2015-07-22 | 宁波中加低碳新技术研究院有限公司 | Durable wood-bamboo cellulose composite material |
| EP2956506A4 (en) * | 2013-02-15 | 2017-01-04 | FPInnovations Inc. | Cellulose nanocrystals - thermoset resin systems, applications thereof and articles made therefrom |
| CN103481337A (en) * | 2013-09-23 | 2014-01-01 | 浙江裕华木业有限公司 | Glass fiber reinforcement poplar veneer laminated lumber and production method thereof |
| CN106753096A (en) * | 2016-12-12 | 2017-05-31 | 韦翔宇 | A kind of building board binding agent |
| CN106590486A (en) * | 2016-12-17 | 2017-04-26 | 浦北县建业胶合板有限责任公司 | Phenolic resin adhesive and preparation method thereof |
| CN107142056A (en) * | 2017-05-08 | 2017-09-08 | 池州市小康人家科技有限公司 | A kind of wood furniture viscose glue |
| CN110394875A (en) * | 2018-04-25 | 2019-11-01 | 康利源科技（天津）股份有限公司 | A kind of production and processing technology of electrical laminated wood raw material stay plate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793113A (en) * | 1972-07-13 | 1974-02-19 | C Pearson | Adhesive compositions and method of making plywood |
| JPS6280495A (en) * | 1985-10-03 | 1987-04-13 | Nippon Foil Mfg Co Ltd | Fin material for heat exchanger |
| JPH0623506A (en) * | 1992-07-10 | 1994-02-01 | Ahresty Corp | Collapsible placed core for die casting |
| CN1629240A (en) * | 2003-11-10 | 2005-06-22 | 信越化学工业株式会社 | Acrylic adhesive sheet |
-
2006
- 2006-04-05 CN CNB2006100667114A patent/CN100365091C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3793113A (en) * | 1972-07-13 | 1974-02-19 | C Pearson | Adhesive compositions and method of making plywood |
| JPS6280495A (en) * | 1985-10-03 | 1987-04-13 | Nippon Foil Mfg Co Ltd | Fin material for heat exchanger |
| JPH0623506A (en) * | 1992-07-10 | 1994-02-01 | Ahresty Corp | Collapsible placed core for die casting |
| CN1629240A (en) * | 2003-11-10 | 2005-06-22 | 信越化学工业株式会社 | Acrylic adhesive sheet |
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| CN1821334A (en) | 2006-08-23 |
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Granted publication date: 20080130 Termination date: 20140405 |