CN101407701A - Additive for adhesive for artificial board and adhesive for artificial board - Google Patents
Additive for adhesive for artificial board and adhesive for artificial board Download PDFInfo
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- CN101407701A CN101407701A CNA2008100713770A CN200810071377A CN101407701A CN 101407701 A CN101407701 A CN 101407701A CN A2008100713770 A CNA2008100713770 A CN A2008100713770A CN 200810071377 A CN200810071377 A CN 200810071377A CN 101407701 A CN101407701 A CN 101407701A
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- artificial board
- adhesion agent
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- wood
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Abstract
The invention discloses an additive of adhesives used for wood-based panels and an adhesive for wood-based panels. The additive of adhesives used for wood-based panels contains 30-50wt percent activated clay, 4-10wt percent cellulose and 20-40wt percent wheat bran and can enhance adhering strength of resin-based adhesives, improve water-proof and thermal-resistant performance of wood-based panels, and reduce formaldehyde release and lower foodstuff consumption.
Description
Technical field
The present invention relates to a kind of additive of tackiness agent, relate to a kind of additive of adhesion agent for artificial board especially.
Background technology
Resin based adhesive (mainly comprising urea-formaldehyde resin adhesive (UF), Phenol aldehyde resin and terpolycyantoamino-formaldehyde resin etc.) has good adaptability, cheap to fiber substance, and it mainly is wood adhesive with the resin based adhesive that present countries in the world more than 90% produce wood-based plate (comprising wood-based plate, core-board, medium density fibre board (MDF) and shaving board etc.).In the resin based adhesive, it is raw material that urea-formaldehyde resin, resol and terpolycyantoamino-formaldehyde resin are with formaldehyde, the tackiness agent that carries out addition reaction and polycondensation with other material under certain condition and make, residual inevitably a part of free formaldehyde distributes to the external world in the glue process.Partly solidified incomplete urea-formaldehyde resin, resol or terpolycyantoamino-formaldehyde resin also can issue estranged separating in the effect of heat and moisture and form free formaldehyde again and outwards distribute.
For bonding strength, solid content and the precompressed performance of strengthening tackiness agent, the most employing of existing adhesion agent for artificial board need add sound flour and carry out modification as properties-correcting agent in resin based adhesive, just can produce intensity, solid content and the standard compliant wood-based plate of precompressed performance.The annual production of China's wood-based plate has broken through 9,000 ten thousand m
3(only being the incomplete statistics of large-lot producer) approximately needs 0.0336 ton of calculating with every cubic metre of wood-based plate, needs to consume the starting material of 3,020,000 tons of flour as tackiness agent, further aggravated the staple food supply of global anxiety.Flour can produce bigger shrinkability in making sheet hot pressing process of setting, and tensile strength is low.Poor water resistance, the moisture-sensitive of the wood-based plate made from the resin based adhesive that adds flour, easily come unglued, viscous deformation is big.
For saving a large amount of grains that consume in the plywood production process, and the quality of production of raising glued board, for a long time, country has dropped into great amount of manpower and material resources and has carried out the substitute products that flour is sought in tackling of key scientific and technical problems, this product should be when reaching the bonding strength and precompressed performance suitable with the adhesion agent for artificial board that adds flour, reduce the burst size of methanal after urea-formaldehyde resin, resol or terpolycyantoamino-formaldehyde resin solidify, make the wood-based plate that makes applicable to indoor application.
Summary of the invention
The object of the present invention is to provide a kind of additive of adhesion agent for artificial board, to solve the above-mentioned problems in the prior art.The additive of adhesion agent for artificial board provided by the invention can increase the bonding strength of resin based adhesive, improves water-fast, the heat resistance of wood-based plate, reduces formaldehyde and discharges, and reduce grain (flour) consumption.
A further object of the invention provides a kind of adhesion agent for artificial board.
Technical scheme provided by the invention is as follows:
A kind of additive of adhesion agent for artificial board comprises that weight percent is 30%～50% atlapulgite, 4%～10% Mierocrystalline cellulose and 20%～40% wheat bran.
The additive of above-mentioned adhesion agent for artificial board can improve the bonding strength and the water tolerance of adhesion agent for artificial board greatly, because the equal torpescence of chemical property of atlapulgite, Mierocrystalline cellulose and wheat bran, therefore, acidproof, the salt tolerant of tackiness agent, alkaline-resisting and corrosion resistance are also strengthened, the long quality-guarantee period of tackiness agent, difficult going mouldy.Owing to do not contain flour in the tackiness agent, its anti-ability of damaging by worms is also strengthened.Atlapulgite, Mierocrystalline cellulose and wheat bran all do not contain any poisonous, deleterious composition, and have suitable polarity, wettability and potential of hydrogen, form firm curing system with resin based adhesive, reduce the free formaldehyde release of resin based adhesive greatly.The present invention is that raw material is processed into the additive of timber with adhesion agent for artificial board with non-grain class material, and can replace the effect of flour in the adhesive of artificial board fully, reduces grain consumption.
In the additive of aforementioned adhesion agent for artificial board, the aforementioned fibers element is one or more in methylcellulose gum, carboxymethyl cellulose, ethyl cellulose, Walocel MT 20.000PV, Natvosol, hydroxypropylcellulose or the Vltra tears, be preferably carboxymethyl cellulose or Vltra tears (HPMC), most preferably be molecular weight at 4000～15000 carboxymethyl cellulose or Vltra tears.Selected carboxymethyl cellulose meets GB/T 12028-2006 national standard.Aforementioned atlapulgite meets HG/T 2569-2007 industry standard.The also available kaolin of atlapulgite replaces.
In the additive of aforementioned adhesion agent for artificial board, can also comprise that weight ratio is 10%～20% light calcium carbonate and/or 8%～15% Semen Tritici aestivi.Described light calcium carbonate meets HG 2940-2000 industry standard.Light calcium carbonate can be regulated the viscosity and the rheological property of tackiness agent, and forms more firm curing system with resin based adhesive.Semen Tritici aestivi flies the face that gets off to be mixed with dust during for flour milling, can prevent that resin based adhesive from too infiltrating timber, improves Resin Flow, when preventing to pressurize glue is extruded and the starved phenomenon that forms.The additive of adhesion agent for artificial board preferably is 40% atlapulgite by weight percent, and 5% Mierocrystalline cellulose, 30% wheat bran, 15% light calcium carbonate and 10% Semen Tritici aestivi are formed.
The additive of aforementioned adhesion agent for artificial board can also comprise other materials that do not influence the adhesion agent for artificial board performance.
The additive of the adhesion agent for artificial board of aforementioned weight ratio is crushed to below 400 orders, and mixing makes the additive of adhesion agent for artificial board.
A kind of adhesion agent for artificial board is that the additive of the aforementioned adhesion agent for artificial board of 70%～80% resin based adhesive and 20%～30% is formed by weight percent.Be to obtain adhesion agent for artificial board behind the additive of aforementioned adhesion agent for artificial board of 70%～80% resin based adhesive and 20%～30% and the uniform mixing with weight percent.
The adhesion agent for artificial board of aforementioned proportioning can improve the water tolerance and the bond strength of wood-based plate, because tackiness agent does not adopt the active flour of character, acidproof, salt tolerant, alkaline-resisting, the corrosion-resistant and anti-performance of going mouldy of wood-based plate are also strengthened, and have been reduced grain consumption.The additive and the resin based adhesive of adhesion agent for artificial board have formed curing system, greatly reduce the burst size of free formaldehyde in the resin based adhesive.
In the aforementioned adhesion agent for artificial board, described resin based adhesive is a kind of in urea-formaldehyde resin, resol or the terpolycyantoamino-formaldehyde resin, is specially adapted to urea-formaldehyde resin.The additive of adhesion agent for artificial board mixes back formation with urea-formaldehyde resin tackiness agent can improve the cohesive strength of urea-formaldehyde resin greatly, and forms firm curing system, suppresses free formaldehyde and discharges.
We have investigated the bonding strength and the formaldehyde emission value of tackiness agent, and the perforation test value of formaldehyde emission value must be less than 10mg formaldehyde/100g plate.
The additive of adhesion agent for artificial board provided by the invention can increase the bonding strength of resin based adhesive, improve water-fast, the heat resistance of wood-based plate, reducing formaldehyde discharges, improve environmental benefit, improve the eubiosis, a kind of substitute products of flour are provided simultaneously, have can be country every year and save 9,000 ten thousand m
3The flour that glued board is required has long-range strategic importance and economic implications.
Embodiment
Can further understand the present invention by the embodiment of the invention given below; following examples only are several specific embodiment of the present invention; but design concept of the present invention is not limited thereto; allly utilize this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Embodiment 1
With 500g atlapulgite (HG/T 2569-2007), the 100g molecular weight is that 4000～5000 carboxymethyl cellulose (GB/T12028-2006) and 400g wheat bran are crushed to below 400 orders with pulverizer, and mixing makes the additive of 1000g adhesion agent for artificial board.
Embodiment 2
With 300g atlapulgite (HG/T 2569-2007), the 40g molecular weight is that 12000～15000 carboxymethyl cellulose (GB/T12028-2006), 310g wheat bran, 200g light calcium carbonate and 150g Semen Tritici aestivi are crushed to below 300 orders with pulverizer, and mixing makes the additive of 1000g adhesion agent for artificial board.
Embodiment 3
With 400g atlapulgite (HG/T 2569-2007), the 50g molecular weight is that 4000～5000 carboxymethyl cellulose, 300g wheat bran, 150g light calcium carbonate (HG 2940-2000) and 100g Semen Tritici aestivi are crushed to below 400 orders with pulverizer, and mixing makes the additive of 1000g adhesion agent for artificial board.
Embodiment 4
With 500g atlapulgite (HG/T 2569-2007), the 100g molecular weight is that 12000～15000 Vltra tears, 200g wheat bran and 200g light calcium carbonate (HG 2940-2000) are crushed to below 400 orders with pulverizer, and mixing makes the additive of adhesion agent for artificial board.
Embodiment 5
The additive (embodiment 2 makes) and the 800g urea-formaldehyde resin of 200g adhesion agent for artificial board are mixed, make the 1000g adhesion agent for artificial board.
Embodiment 6
The additive (embodiment 3 makes) and the 700g urea-formaldehyde resin of 300g adhesion agent for artificial board are mixed, make the 1000g adhesion agent for artificial board.
Embodiment 7
The additive (embodiment 4 makes) and the 800g resol of 200g adhesion agent for artificial board are mixed, make the 1000g adhesion agent for artificial board.
The comparative example
200g flour (high-quality) and 800g urea-formaldehyde resin are mixed, make adhesion agent for artificial board.
We have detected the bonding strength and the formaldehyde emission value (perforation test value) of the adhesion agent for artificial board that makes among embodiment 5, embodiment 6, embodiment 7 and the comparative example according to the regulation of GB/T 9846-2006 and GB18580-2001, and concrete data are as shown in table 1:
The bonding strength of table 1 adhesion agent for artificial board and formaldehyde emission value test result
| Group | Embodiment 5 | Embodiment 6 | Embodiment 7 | The comparative example |
| Bonding strength (MPa) | 0.78～0.82 | 0.80～0.85 | 0.78～0.83 | 0.72～0.77 |
| Formaldehyde emission value (mg/100g plate) | 4.9 | 4.5 | 5.0 | 18.1 |
。
Claims (9)
1, a kind of additive of adhesion agent for artificial board comprises that weight percent is 30% ~ 50% atlapulgite, 4% ~ 10% Mierocrystalline cellulose and 20% ~ 40% wheat bran.
2, according to the additive of the adhesion agent for artificial board described in the claim 1, it is characterized in that: comprise that also weight ratio is 10% ~ 20% light calcium carbonate and/or 8% ~ 15% Semen Tritici aestivi.
3, according to the additive of the adhesion agent for artificial board described in the claim 2, it is characterized in that: preferably be 40% atlapulgite by weight percent, 5% Mierocrystalline cellulose, 30% wheat bran, 15% light calcium carbonate and 10% Semen Tritici aestivi are formed.
4, according to the additive of the adhesion agent for artificial board described in the claim 2, it is characterized in that: described Mierocrystalline cellulose is one or more in methylcellulose gum, carboxymethyl cellulose, ethyl cellulose, Walocel MT 20.000PV, Natvosol, hydroxypropylcellulose or the Vltra tears.
5, according to the additive of the adhesion agent for artificial board described in the claim 2, it is characterized in that: described Mierocrystalline cellulose is preferably carboxymethyl cellulose or Vltra tears.
6, according to the additive of the adhesion agent for artificial board described in the claim 2, it is characterized in that: described Mierocrystalline cellulose most preferably is molecular weight at 4000 ~ 15000 carboxymethyl cellulose or Vltra tears.
7, a kind of adhesion agent for artificial board is that the additive of the adhesion agent for artificial board that obtains in each of the claim 1,2,3,4,5 or 6 of 70% ~ 80% resin based adhesive and 20%～30% is formed by weight percent.
8, according to the adhesion agent for artificial board described in the claim 7, it is characterized in that: described resin based adhesive is a kind of in urea-formaldehyde resin, resol or the terpolycyantoamino-formaldehyde resin.
9, according to the adhesion agent for artificial board described in the claim 7, it is characterized in that: described resin based adhesive is preferably urea-formaldehyde resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100713770A CN101407701B (en) | 2008-07-07 | 2008-07-07 | Additive for adhesive for artificial board and adhesive for artificial board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100713770A CN101407701B (en) | 2008-07-07 | 2008-07-07 | Additive for adhesive for artificial board and adhesive for artificial board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101407701A true CN101407701A (en) | 2009-04-15 |
| CN101407701B CN101407701B (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100713770A Expired - Fee Related CN101407701B (en) | 2008-07-07 | 2008-07-07 | Additive for adhesive for artificial board and adhesive for artificial board |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424741A (en) * | 2011-09-15 | 2012-04-25 | 范会芳 | Compound glue film for full-bamboo container floor gluing and full-bamboo container floor |
| CN106009707A (en) * | 2016-06-24 | 2016-10-12 | 佛山市合璟节能环保科技股份有限公司 | Biomass additive for board adhesive as well as preparation method and application thereof |
| CN106543926A (en) * | 2016-10-20 | 2017-03-29 | 曹美兰 | A kind of Wood-plastic floor decorative layer laying binding agent |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715351A (en) * | 2004-07-02 | 2006-01-04 | 吉林市兆丰添加剂有限责任公司 | Composite additive of wood adhesive |
| CN101200624A (en) * | 2006-12-14 | 2008-06-18 | 上海鹰翔实业有限公司 | Lumber adhesive agent additives and preparation technique |
-
2008
- 2008-07-07 CN CN2008100713770A patent/CN101407701B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424741A (en) * | 2011-09-15 | 2012-04-25 | 范会芳 | Compound glue film for full-bamboo container floor gluing and full-bamboo container floor |
| 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 |
| CN106009707A (en) * | 2016-06-24 | 2016-10-12 | 佛山市合璟节能环保科技股份有限公司 | Biomass additive for board adhesive as well as preparation method and application thereof |
| CN106543926A (en) * | 2016-10-20 | 2017-03-29 | 曹美兰 | A kind of Wood-plastic floor decorative layer laying binding agent |
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| Publication number | Publication date |
|---|---|
| CN101407701B (en) | 2010-11-10 |
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