CN1113947C - Adhesive and boards made by using the same - Google Patents
Adhesive and boards made by using the same Download PDFInfo
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- CN1113947C CN1113947C CN96199505A CN96199505A CN1113947C CN 1113947 C CN1113947 C CN 1113947C CN 96199505 A CN96199505 A CN 96199505A CN 96199505 A CN96199505 A CN 96199505A CN 1113947 C CN1113947 C CN 1113947C
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- tackiness agent
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- pulping liquor
- spent pulping
- reaction
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
- C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C09J161/14—Modified phenol-aldehyde condensates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
- C08L61/14—Modified phenol-aldehyde condensates
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Paper (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
An adhesive prepared by using a waste pulp liquor, having excellent strengths, a high content of components derived from the waste liquor, and a marked economic advantage over commercially available thermosetting resin adhesives; and lignocellulose boards made by using this adhesive. The adhesive comprises a waste pulp liquor and a product of a reaction of a phenol compound with formaldehyde, wherein at least 30 % by weight of nonvolatile components are ones derived from a waste pulp liquor of a gramineous plant. The lignocellulose boards are practicable ones, such as a particle board or a fiber board, made by mixing the above adhesive with small pieces of a lignocellulosic substance and heating and pressing the mixture to form a board, wherein at 30 % by weight of nonvolatile components in the adhesive is ones derived from a waste pulp liquor of a gramineous plant.
Description
Technical field
The present invention relates to utilize the tackiness agent of spent pulping liquor and used the lignocellulose sheet material such as veneer sheet, fiberboard of this tackiness agent.
Background technology
The raw material of the Pulp industry of Japan and European and American countries in fact all can only depend on timber.These countries all once lived through the serious environmental pollution problem that is caused by spent pulping liquor, and taking this as an opportunity, had done research to utilizing spent pulping liquor as the part of raw materials of phenolic resinoid tackiness agent.
The major part of these researchs is to utilize from spent pulping liquor the xylogen that separates, makes with extra care and get.For example, " timber industry 24, P84, half well etc. (1969) ", the clear 53-28462 of Japanese patent gazette number, the clear 62-56193 of Japanese patent gazette number, the flat 6-506967 of Japanese Patent number, the flat 7-53858 of Japanese patent gazette number etc.But the cost of refining xylogen is very high.Now, the price of commercially available xylogen will liken to and be urea and the formaldehyde height of general timber with the raw material of tackiness agent, with the price of phenol and trimeric cyanamide much at one.And xylogen is the part of waste liquid, only uses xylogen can not fundamentally solve the handling problem of waste liquid.
On the other hand, also have other reports that utilize spent pulping liquor (for example, the clear 51-22497 of Japanese patent gazette number, the clear 54-15798 of Japanese patent gazette number, the clear 60-22024 of Japanese patent gazette number).But Japanese Patent discloses clear 54-15798 number and the clear 60-22024 of Japanese patent gazette number in order to obtain full intensity, must use than the more substantial phenol of spent pulping liquor composition.In the clear 51-22497 of Japanese patent gazette number,, 50～100 parts of phenol have been used corresponding to 100 parts of lignosulfite solids components, its manufacturing process is complicated, in addition, consider, also not as good as urea resin tackiness agent and melamine resin adhesive from the angle of cost.
The tackiness agent of previous methods is manufacturing process's complexity not only, the intensity that is possessed is not as good as commercially available timber tackiness agent, and consider also unfavorablely from the cost aspect of raw material, so from above-mentioned any point or all reason is considered, be the purpose that can not reach practicability.
On the other hand, China and Southeast Asian countries not only can be used timber, can also be that raw material carries out the production of paper pulp with non-timber such as bamboo, rice straw, wheat straw, reed, flax, mestha, but the turnout of dissolving pulp sharply increases recently, and is also serious day by day by the problem of environmental pollution that spent pulping liquor causes.
The objective of the invention is to use spent pulping liquor (black liquor), provide possess good strength, use the spent pulping liquor components in proportions higher, than the commercially available low-cost tackiness agent of thermohardening type resin glue, and the well behaved lignocellulose sheet material that has used this tackiness agent.
The announcement of invention
In fact only used the wood pulp waste liquid in the previous methods, and be special object with xylogen composition wherein, the paddy rice that the present invention has studied emphatically in the composition of xylogen and hemicellulose to differ widely with timber is the spent pulping liquor of raw material, discovery is as binder materials, and it is very effective using this waste liquid.
Surprisingly, even present inventors directly use as sheet materials such as veneer sheets the spent pulping liquor concentrated solution of paddy rice with tackiness agent, also can make the board product that possesses certain intensity, the result who this has been carried out conscientious research is, under proper condition, make paddy rice spent pulping liquor and phenols and formaldehyde reaction, can obtain to possess the tackiness agent of good strength characteristic.
That is to say that tackiness agent of the present invention possesses following feature, is the tackiness agent that is obtained by spent pulping liquor and phenols and formaldehyde reaction, and 30 weight % are above from paddy rice spent pulping liquor in the non-volatile component of tackiness agent.
In addition, the present invention also comprises lignocellulose sheet materials such as veneer sheet, fiberboard, their feature is to add in small pieces lignocellulose material and be mixed into above-mentioned tackiness agent or contain the tackiness agent from the composition of paddy rice spent pulping liquor more than the 30 weight %, and heating and pressurizing becomes sheet material then.
The spent pulping liquor that is used for tackiness agent of the present invention is discharged from the pulp cooking operation, is commonly referred to as black liquor, and it is a kind of waste liquid that comprises hemicellulose, xylogen or their resolvent or denatured products and boiling with catalyzer.This spent pulping liquor only is preferably to be made up of paddy rice spent pulping liquor, also can use and sneak into paddy rices such as a part of timber waste liquid in addition.
As above-mentioned paddy rice, can use all paddy rices such as bamboo, rice straw, wheat straw, bagasse (slag of sugarcane), reed, corn, jowar, be preferably the spent pulping liquor that uses bamboo, rice straw, wheat straw.
As above-mentioned spent pulping liquor, can use so-called chemical paper pulp methods such as kraft process, sulfurous method, alkaline process, the semi-chemical pulp method, the thermomechanical pulp method, organic solvent methods etc. make the waste liquid of all paper slurry method of hemicellulose, xylogen or their resolvent or denatured products discharge, but be preferably the waste liquid that obtains under the alkaline condition, particularly the waste liquid that obtains with alkaline process, kraft process.In the alkaline boiling operation in the past, hemicellulose is broken down into hydroxy acid, alkaline cooking waste liquor is directly used as tackiness agent be subjected to certain limitation, and what attract tremendous attention among the present invention is to have used alkaline cooking waste liquor preferably.
Among the present invention, the whole compositions from plant in the spent pulping liquor all are the effective constituent of preparation tackiness agent, and when spent pulping liquor was alkalescence, alkaline components played the catalysts effect.So, there is no need to remove the special component in the spent pulping liquor.But, be preferably and remove the paper pulp primitive fiber of sneaking in the waste liquid.Spent pulping liquor normally dewaters, and to be concentrated to concentration be that 20～50% degree re-uses.
As phenols, can use all phenols such as phenol, cresols, xylenol, dihydroxyphenyl propane, Bisphenol F, Resorcinol, but consider, the good especially phenol that is to use from performance and cost aspect.Corresponding to the nonvolatile component of paddy rice spent pulping liquor, its consumption better is below 100 weight %, and good especially is at 5～60 weight %.If consumption surpasses 100 weight %, though also it doesn't matter, cost increases, and can not improve physical properties.
As formaldehyde, can use all formaldehyde such as formalin, paraformaldehyde, polyoxymethylene.Corresponding to phenolic monomers, with molar ratio computing, its consumption is in 1.2～5.0 scopes, and good especially is in 1.8～3.5 scope.
In addition, in mole number is no more than the scope of formaldehyde, also available other aldehyde, for example, acetaldehyde, furfural, phenyl aldehyde, oxalic dialdehyde etc. replace formaldehyde to use.
Tackiness agent of the present invention is preferably more than pH9, is preferably under the above alkaline condition of pH10, makes above-mentioned spent pulping liquor and phenols and formaldehyde reaction and makes.As catalyzer, can use with the oxide compound of basic metal and alkaline-earth metal or headed by the oxyhydroxide all and satisfy the basic catalyst of above-mentioned pH condition.But,, relatively good like this if the alkaline matter that the spent pulping liquor that uses makes as kraft process, alkaline process etc. then there is no need to add above-mentioned basic catalyst especially.
Tackiness agent of the present invention is the resultant of reaction of above-mentioned spent pulping liquor and phenols and formaldehyde, in the nonvolatile component from the composition of paddy rice spent pulping liquor at least more than 30 weight %, be preferably more than 50 weight %, good especially is that content is in the scope of 60～95 weight %.If the composition from paddy rice spent pulping liquor is less than 30 weight %, then can not reach purpose of the present invention.And this content is represented the nonvolatile component corresponding to tackiness agent, the weight % of the nonvolatile component in the paddy rice spent pulping liquor that uses when preparing this tackiness agent.
Tackiness agent of the present invention has the structure of having added methylol in the polymkeric substance of spent pulping liquor composition and phenols and formaldehyde, the preferably mutual polymerization of spent pulping liquor composition and phenolic monomers, the balanced structure of additional methylol well.Bad structure has comprised macro-mixing and has had only the structure of the polycondensate of phenols and formaldehyde, or macro-mixing have only the structure of the polycondensate of spent pulping liquor composition and formaldehyde, these structures have been undertaken obtaining with the spent pulping liquor reaction after the abundant polycondensation by phenols and formaldehyde again, or obtain with the phenols reaction after making spent pulping liquor and formaldehyde reaction again.
After the above-mentioned tackiness agent that possesses better structure obtained specific resultant of reaction by phenols and formaldehyde reaction, this resultant of reaction was again with spent pulping liquor reaction and obtain, or spent pulping liquor and phenols and formaldehyde react simultaneously under given conditions and obtains.Especially after obtaining specific resultant of reaction by phenols and formaldehyde, this resultant of reaction has optimal structure with the tackiness agent that the spent pulping liquor reaction is obtained again.
Above-mentioned obtain specific resultant of reaction by phenols and formaldehyde after, the tackiness agent that this resultant of reaction obtains with the spent pulping liquor reaction again is meant following material.At first, above-mentioned specific resultant of reaction is meant that weight-average molecular weight is 120～500, is preferably 150～300, and the content of the methylol body of phenolic monomers is preferably the resultant of reaction at phenols more than 40% and formaldehyde more than 20%.Though the methylol body of this phenolic monomers comprises a methylol, dihydroxymethyl, trishydroxymethyl,, secondly be that the content of dihydroxymethyl is high more good more with trishydroxymethyl.For example, such resultant of reaction can be 1.8～3.5 to the mol ratio of phenolic monomers at formaldehyde, and basic metal is 0.1～0.5 to the mol ratio of phenolic monomers, and temperature of reaction is 50～80 ℃, and the reaction times is to react under 30 minutes～2 hours the condition to get.This specific resultant of reaction is added in the spent pulping liquor, 50～95 ℃ temperature range internal reactions 20 minutes～5 hours.
In addition, under given conditions, above-mentioned spent pulping liquor and phenols and formaldehyde react simultaneously and the tackiness agent that obtains is meant following material.That is to say, in the spent pulping liquor concentrated solution, add phenols and formaldehyde, initial reaction 20 minutes～2 hours under 40～85 ℃ temperature is preferably 45～75 ℃ temperature range internal reaction 30 minutes～1 hour, then 50～95 ℃ of reactions 30 minutes～8 hours.By initial reaction, preferentially form the methylol body of phenolic monomers.
If tackiness agent of the present invention is neutralized to pH5～7, then this tackiness agent is separated into the component that dissolves in the tetrahydrofuran (THF) component and be insoluble in tetrahydrofuran (THF), and the weight-average molecular weight of soluble constituent better is more than 500, is more preferably 800～2000.If weight-average molecular weight is below 500, then intensity is lower, mainly obtains desirable weight-average molecular weight by adjusting the reaction times.
Tackiness agent of the present invention can be aqueous, and particularly the suspension liquid state of the aqueous solution or water is used, and also can dehydrate with Powdered use.
Tackiness agent of the present invention solidifies by the crosslinking reaction of methylol, and general thermoset better is more than 150 ℃, is more preferably under 180～210 ℃ temperature to reach the solidified purpose by thermal treatment.But, not necessarily be limited to thermoset.For example, in tackiness agent, the basic metal more than 0.5 mole is existed, be mixed into organic acid acetic during use and just can solidify at normal temperatures corresponding to phenolic monomers.
Tackiness agent of the present invention can be used for all thermosetting resin adhesive or binding agent fields that can utilize in the past, particularly more can bring into play its good performance as timber such as veneer sheet, fiberboard, clamping plate with tackiness agent.
Tackiness agent of the present invention also can and be used with other medicaments such as water-resisting agent, releasing agent and fire retardants.In addition, tackiness agent of the present invention also can and be used with other synthetic resin binders such as urea resin, melamine resins.
Below, sheet material of the present invention is described.
Sheet material of the present invention be meant with veneer sheet, fiberboard be representative in small pieces lignocellulose materials such as timber, be mixed into tackiness agent, heating and pressurizing and the plate that forms.
Sheet material of the present invention is meant in small pieces lignocellulose material and adds the content that is mixed into from the composition of paddy rice spent pulping liquor more than 30 weight %, be preferably more than 50 weight %, the tackiness agent that good especially is more than 60 weight %, make the ratio of nonvolatile component wherein reach 0.5～40 weight %, heating and pressurizing and the plate that forms.
As above-mentioned tackiness agent, be preferably and use aforesaid tackiness agent of the present invention, also can use paddy rice spent pulping liquor.And, also can be also with other timber tackiness agents of a part.
Described tackiness agent interpolation of the present invention is mixed in the small pieces lignocellulose material, and heating and pressurizing becomes plate, just can make veneer sheet, fiberboard etc. and possess practicality and well behaved lignocellulose sheet material.In small pieces lignocellulose material, add tackiness agent of the present invention, reach the degree of 0.5～40 weight %, generally be preferably and add 1～20 weight % for making wherein nonvolatile component.
Sheet material of the present invention possesses on an equal basis with the board product of having used timber in the past with tackiness agent, or better mechanical strength.
In addition, when making lignocellulose sheet material of the present invention, the condition of heating and pressurizing etc. can be according to routine.Also can use additives such as water-resisting agent, releasing agent and sanitas, these additives can add in advance and are mixed in the tackiness agent, also can add respectively with tackiness agent when making sheet material.
It is not clear at present that tackiness agent of the present invention possesses the reason of superperformance, may be because the cause of peculiar hemicellulose of paddy rice and lignin component.
Contain a large amount of xylans as hemicellulose in the paddy rice, great majority change furfural into through wood sugars behind the xylan hydrolysis.Furfural can be used as the aldehyde source of furane resin, resol and uses, and industrial, paddy rices such as the cob of corn, wheat straw, rice husk, bagasse are utilized as good raw material.When carrying out the alkaline pulp boiling, change hydroxy acid from most of aldehyde composition of hemicellulose into by peeling reaction, xylan demonstrates very strong resistivity to peeling reaction.The reason that tackiness agent of the present invention can be brought into play superperformance is exactly because xylan or its resolvent have been used effectively as the aldehyde source.
In addition, the xylogen of paddy rice possesses the special construction shown in the formula (1) (formula (2) is for being included in the xylogen in the softwood tree mostly, and formula (3) is for being included in the xylogen in the deciduous tree mostly)
Because the ortho position of xylogen about the phenol skeleton of paddy rice do not have methoxyl group, thus can carry out the addition reaction of formaldehyde at an easy rate, and, can easily form oligopolymer by cocondensation with phenol.
In the tackiness agent of the present invention, describe with the optimal tri hydroxy methyl phenol reason preferably that to be example react the methylol body of spent pulping liquor and aldehydes matter.The tri hydroxy methyl phenol and the spent pulping liquor composition dehydrating condensation of formula (4) expression, the phenolic monomers and the spent pulping liquor composition of formula (5) expression form easily by the mutual polymeric oligopolymer of methylene radical.Yet the necessary methylol body of crosslinking reaction remains in the phenol skeleton.Like this, a spot of phenol and formaldehyde just can be utilized effectively, by the crosslinking reaction formation gel-type resin constituent of methylol.
Wherein, R, R
1Expression spent pulping liquor composition.
The optimum regime that carries out an invention
Below, by embodiment the present invention is described in more detail, but the present invention is not limited in these embodiment.
In embodiment and the comparative example, with formic acid the pH value of sample is adjusted to 5～7, the gel filtration chromatography instrument of producing with Shimadzu Seisakusho Ltd. (pillar is シ マ ズ LC post GPC-801 1500) is under the condition of THF1cc/min at carrier then, measures the graph of molecular weight distribution and the weight-average molecular weight of the component that dissolves in THF (tetrahydrofuran (THF)) by detector.The content of the methylol body of phenolic monomers is represented with the area % of graph of molecular weight distribution among the present invention.
Embodiment 1～5
In the reaction vessel that condenser and stirrer are housed, add nonvolatile component and be 50 weight %, pH value and be 13 concentrated solution Y by the bamboo spent pulping liquor of kraft process acquisition, add the phenol of specified amount and the formaldehyde of specified amount then, 70 ℃ of regularly reactions, make adhesive A～E.The consumption of phenol and formaldehyde and reaction times etc. are as shown in table 1.In the nonvolatile component of weight-average molecular weight, tackiness agent from the calculated value of the composition of paddy rice spent pulping liquor also by shown in the table 1,
Table 1
| Embodiment | The kind of tackiness agent | Create conditions | Adhesive properties | |||
| Phenols 1) | F/P2) | Reaction times (hr.) | Weight-average molecular weight | Composition 3 from waste liquid) | ||
| 1 | A | 100 | 2.2 | 3.5 | 1350 | 40 |
| 2 | B | 100 | 2.2 | 1.5 | 680 | 40 |
| 3 | C | 40 | 2.5 | 2.5 | 1349 | 56 |
| 4 | D | 20 | 3.0 | 3 | 1180 | 75 |
| 5 | E | 20 | 4.0 | 2 | 1190 | 72 |
1) corresponding to the weight % of the phenols of spent pulping liquor and nonvolatile component
2) formaldehyde is to the mol ratio of phenols
3) the weight % of the nonvolatile component of the rice section spent pulping liquor in the tackiness agent nonvolatile component
(corresponding to the calculated value of the weight % of the nonvolatile component of the used spent pulping liquor of tackiness agent nonvolatile component)
Embodiment 6～8
Get the concentrated solution of the various paddy rice spent pulping liquors shown in the table 2,, add 150 weight % phenols therein and be 3 formaldehyde, after 4 hours, make tackiness agent F～H 70 ℃ of reactions to the mol ratio of phenols corresponding to the nonvolatile component of spent pulping liquor.The weight-average molecular weight of these tackiness agents is as shown in table 2.
Comparative example 1～3
Outside the spent pulping liquor of utilization except using paddy rice, the method that other are identical with embodiment 6～8 makes adhesives I～K.The weight-average molecular weight of these tackiness agents is also represented by table 2.
Table 2
| The kind of tackiness agent | The kind of spent pulping liquor | Weight-average molecular weight | |
| Embodiment 6 | F | The bamboo kraft process | 1260 |
| Embodiment 7 | G | The wheat straw alkaline process | 1480 |
| Embodiment 8 | H | The rice straw alkaline process | 1090 |
| Comparative example 1 | I | The Manila hemp alkaline process | 1320 |
| Comparative example 2 | J | Flax alkaline process | 1430 |
| Comparative example 3 | K | The softwood tree kraft process | 1130 |
Comparative example 4
In the reaction vessel that condenser and stirrer are housed, add aldehydes matter, the mol ratio of aldehydes matter is 2 formalin, is 0.33 sodium hydroxide to the mol ratio of aldehydes matter,, make aerodux Z 80 ℃ of reactions 3.5 hours.With in the formic acid and tackiness agent Z, make its pH value be adjusted into 5～7 after, using the weight-average molecular weight of the component that dissolves in THF that the method identical with embodiment 1 record is 950, this tackiness agent Z is equivalent to the standard plate tackiness agent.
Embodiment 9～11
In the reaction vessel that condenser and stirrer are housed, add aldehydes matter, the mol ratio of aldehydes matter is 3 formalin, is 0.33 sodium hydroxide to the mol ratio of aldehydes matter, 70 ℃ of reactions 30 minutes, make the resultant of reaction X of aldehydes matter and formaldehyde.The graph of molecular weight distribution of this resultant of reaction X as shown in Figure 1.Among the resultant of reaction X methylol body burden of phenolic monomers be adjacent methylolphenol 8%, to methylolphenol+2,6-hydroxymethyl-phenol 8%, 2,4-hydroxymethyl-phenol 11%, tri hydroxy methyl phenol 29% amount to 56%.In addition, weight-average molecular weight is 172.
Then, with the concentrated solution of the used identical paddy rice spent pulping liquor of embodiment 4～6 in add resultant of reaction X, corresponding to the aldehydes matter ratio among the resultant of reaction X of the non-volatile component of spent pulping liquor is 15 weight %, in 70 ℃ of reactions 2 hours, makes tackiness agent L～N.Its weight-average molecular weight is as shown in table 3.In addition, the graph of molecular weight distribution of the rice straw spent pulping liquor tackiness agent of tackiness agent N as shown in Figure 2.
Table 3
| The kind of tackiness agent | The kind of spent pulping liquor | Weight-average molecular weight | |
| Embodiment 9 | L | The bamboo kraft process | 1190 |
| Embodiment 10 | M | The wheat straw alkaline process | 1420 |
| Embodiment 11 | N | The rice straw alkaline process | 1040 |
[strength trial of veneer sheet]
Following embodiment 12～25 and 5～8 pairs of tackiness agents of the present invention of comparative example are as the intensity of veneer sheet with tackiness agent, and utilize the intensity of the veneer sheet that the manufacture method of lignocellulose sheet material of the present invention makes to measure.
What veneer sheet used is will build the disintegration material with the blade of annular blade (pallman) to be cut into the absolutely dry thin slice of 0.5mm, with gunite gun after the tackiness agent of 10 weight % as nonvolatile component added in coating on this thin slice of 340g, put it in the square forming box of 22cm and be shaped, (target proportion is 0.7g/cm with the dividing plate of 1cm
2), be 50kgf/cm at pressure
2, temperature is heating 15 minutes under 20 ℃ the condition.
In addition, molding is cut into the test film of 5 * 20cm, 3 pieces of test films is tested according to the standard of JIS A 5,908 5.5.
Embodiment 12～22
Use the adhesive A～H of the present invention and the L～N of embodiment 1～11 preparation, make the beautiful plate of layer, measure its flexural strength.Test result is as shown in table 4.
Comparative example 5～8
Use the adhesives I～K and the Z of comparative example 1～3 preparation, make veneer sheet, measure its flexural strength.Test result is as shown in table 4.
Embodiment 23
Use aforementioned bamboo spent pulping liquor concentrated solution Y as tackiness agent, make veneer sheet, measure its flexural strength, test result is as shown in table 4.
Embodiment 24,25
Mix aforementioned bamboo spent pulping liquor concentrated solution Y and aforementioned aerodux Z, make bamboo spent pulping liquor nonvolatile component wherein account for 40 weight %, make tackiness agent O; Make bamboo spent pulping liquor nonvolatile component wherein account for 60 weight %, make tackiness agent P.Use these tackiness agents to make veneer sheet, measure their flexural strength, test result is as shown in table 4.
Table 4
| The kind of tackiness agent | The kind of waste liquid | Adhesive properties | The physical properties of sheet material | |||
| Phenols 1) | Component of effluent 2) | Proportion (g/cm 2) | Flexural strength (kgf/cm 2) | |||
| Embodiment 12 | A | Bamboo | 100 | 40 | 0.76 | 214 |
| Embodiment 13 | B | Bamboo | 100 | 40 | 0.76 | 143 |
| Embodiment 14 | C | Bamboo | 40 | 56 | 0.76 | 226 |
| Embodiment 15 | D | Bamboo | 20 | 75 | 0.75 | 198 |
| Embodiment 16 | E | Bamboo | 20 | 72 | 0.75 | 146 |
| Embodiment 17 | F | Bamboo | 15 | 80 | 0.75 | 173 |
| Embodiment 18 | G | Wheat straw | 15 | 80 | 0.76 | 158 |
| Embodiment 19 | H | Rice straw | 15 | 80 | 0.77 | 148 |
| Embodiment 20 | L | Bamboo | 15 | 80 | 0.75 | 227 |
| Embodiment 21 | M | Wheat straw | 15 | 80 | 0.76 | 211 |
| Embodiment 22 | N | Rice straw | 15 | 80 | 0.77 | 189 |
| Embodiment 23 | Y | Bamboo | 0 | 100 | 0.77 | 109 |
| Embodiment 24 | O | Bamboo | 96 | 40 | 0.75 | 168 |
| Embodiment 25 | P | Bamboo | 43 | 60 | 0.76 | 159 |
| Comparative example 5 | I | Manila hemp | 15 | 80 | 0.73 | 41 |
| Comparative example 6 | J | Flax | 15 | 80 | 0.76 | 52 |
| Comparative example 7 | K | Softwood tree | 15 | 80 | 0.72 | 32 |
| Comparative example 8 | Z | Aerodux | 0.76 | 218 | ||
1) corresponding in the tackiness agent from the composition of spent pulping liquor, from the composition % of aldehydes matter
2) in the tackiness agent nonvolatile component from the amount of spent pulping liquor composition
Can draw to draw a conclusion from above embodiment and comparative example:
(1) in the tackiness agent nonvolatile component from the composition of paddy rice spent pulping liquor more than 30%, even more than 50%, even more than 80%, also can give play to identical with aerodux, or better intensity characteristic.
(2) weight-average molecular weight be 120～500, nonvolatile component can give play to the better intensity performance for the aldehydes matter of methylol body and the resultant of reaction of formaldehyde and the tackiness agent that the spent pulping liquor reaction gets more than 20% with phenolic monomers.
(3) even only also can make sheet material as tackiness agent with paddy rice spent pulping liquor.
(4) if formaldehyde to the mol ratio of aldehydes matter in 1.8～3.5 scope, can give play to the better intensity performance.
(5) weight-average molecular weight can have been given play to good strength property at the tackiness agent more than 500.
The possibility of utilizing on the industry
Adhesive of the present invention and sheet material possess following effect, industrially have certain value.
(1) adhesive of the present invention can have been given play to aerodux was identical in the past, or better strength character.
(2) cost of material of adhesive of the present invention is very low, and makes easily, so very favourable economically.
(3) adhesive of the present invention can have been given play to particularly preferred strength character as lignocellulosic materials such as laminate, fiberboard, clamping plate with adhesive.
(4) adhesive of the present invention is applicable to the using method identical with in the past thermosetting resin adhesive.
(5) adhesive of the present invention has solved the problem of environmental pollution that spent pulping liquor causes.
(6) can also effectively utilize resource.
(7) sheet material of the present invention can be made into the lignocellulose sheet material with good mechanical strength.
(8) sheet material of the present invention can make lignocellulose sheet material with extremely cheap raw material, so very economical.
(9) sheet material of the present invention used production equipment and manufacturing process when making the lignocellulose sheet material used general adhesive is identical.
(10) sheet material of the present invention is compared with adhesive with timber in the past, and the consumption of formaldehyde is few, so very safe to human body.
Simple declaration to figure
Fig. 1 represents the graph of molecular weight distribution of resultant of reaction X.Peak 1 among Fig. 1 is that adjacent methylolphenol, peak 2 are that 6-hydroxymethyl-phenol, peak 3 are 2 to methylolphenol and 2, the 4-hydroxymethyl-phenol, and peak 4 is a tri hydroxy methyl phenol.
Fig. 2 represents the graph of molecular weight distribution of rice straw paper adhesive.
Claims (9)
1. a tackiness agent is characterized in that, is made up of the resultant of reaction of spent pulping liquor and aldehydes matter and formaldehyde, is the composition from paddy rice spent pulping liquor more than the 30 weight % of nonvolatile component.
2. tackiness agent as claimed in claim 1, its feature are that also the 50-95 weight % of nonvolatile component is the composition from paddy rice spent pulping liquor.
3. tackiness agent as claimed in claim 1 or 2, its feature are that also described paddy rice spent pulping liquor is the liquid of process boiling under alkaline condition.
4. tackiness agent as claimed in claim 1, its feature also are, are spent pulping liquor and aldehydes matter and the formaldehyde resultant of reaction under the alkaline condition more than the pH9, and formaldehyde to the mol ratio of phenolic monomers in the scope of 1.2-5.0.
5. tackiness agent as claimed in claim 4, its feature also be, described formaldehyde to the mol ratio of phenolic monomers in the scope of 1.8-3.5.
6. as claim 4 or 5 described tackiness agents, its feature also is, is getting for the aldehydes matter of the methylol body of phenolic monomers and the resultant of reaction and the spent pulping liquor reaction of formaldehyde more than 20% of 120-500, nonvolatile component by weight-average molecular weight.
7. tackiness agent as claimed in claim 6, its feature are that also the weight-average molecular weight of the resultant of reaction of described aldehydes matter and formaldehyde is 150-300, and nonvolatile component is the methylol body of phenolic monomers more than 40%.
8. tackiness agent as claimed in claim 1, its feature also be, the weight-average molecular weight that described tackiness agent is neutralized to the component that dissolves in tetrahydrofuran (THF) behind the pH5-7 is 500-2000.
9. a lignocellulose sheet material is characterized in that, adds each described tackiness agent among the claim 1-8 in small pieces lignocellulose material, makes nonvolatile component wherein reach 0.5-40 weight %, then heating and pressurizing and making.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31363695 | 1995-11-06 | ||
| JP313636/95 | 1995-11-06 | ||
| JP313636/1995 | 1995-11-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1207114A CN1207114A (en) | 1999-02-03 |
| CN1113947C true CN1113947C (en) | 2003-07-09 |
Family
ID=18043710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96199505A Expired - Fee Related CN1113947C (en) | 1995-11-06 | 1996-11-06 | Adhesive and boards made by using the same |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1113947C (en) |
| WO (1) | WO1997017412A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998050467A1 (en) * | 1997-05-05 | 1998-11-12 | Tsuyoshi Kono | Resin composition and board made by using the same |
| KR19990068760A (en) * | 1999-06-14 | 1999-09-06 | 김성호 | Adhesive bond and there manufacture method for building materials |
| JP2011099083A (en) * | 2009-11-09 | 2011-05-19 | Kono Shinsozai Kaihatsu Kk | Epoxy resin |
| CN102618196B (en) * | 2011-01-27 | 2013-10-16 | 中国林业科学研究院木材工业研究所 | Biomass adhesive, preparation method of the biomass adhesive and bonded wood plate |
| US9890130B2 (en) | 2013-02-15 | 2018-02-13 | Empire Technology Development Llc | Phenolic epoxy compounds |
| US9868683B2 (en) | 2013-06-13 | 2018-01-16 | Empire Technology Development Llc | Multi-functional phenolic resins |
| US10106494B2 (en) | 2013-12-02 | 2018-10-23 | Empire Technology Development Llc | Gemini surfactant and their use |
| CN104293258B (en) * | 2014-03-10 | 2016-05-18 | 黄淮学院 | A kind of method of papermaking wastewater recycling and the adhesive that adopts the method to produce |
| CN110894409A (en) * | 2018-09-12 | 2020-03-20 | 上海昶法新材料有限公司 | Modified phenolic resin adhesive for building template paper and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324747A (en) * | 1979-02-20 | 1982-04-13 | Reichhold Limited | Pulp waste liquor-phenolic resin binder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51148731A (en) * | 1975-06-17 | 1976-12-21 | Eidai Co Ltd | A process for preparing lignin-phenol co-condensation resin adhesive |
-
1996
- 1996-11-06 CN CN96199505A patent/CN1113947C/en not_active Expired - Fee Related
- 1996-11-06 WO PCT/JP1996/003240 patent/WO1997017412A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324747A (en) * | 1979-02-20 | 1982-04-13 | Reichhold Limited | Pulp waste liquor-phenolic resin binder |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997017412A1 (en) | 1997-05-15 |
| CN1207114A (en) | 1999-02-03 |
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