CN107033832A - A kind of wood-based plate is with without aldehyde composite adhesive and preparation method thereof - Google Patents
A kind of wood-based plate is with without aldehyde composite adhesive and preparation method thereof Download PDFInfo
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- CN107033832A CN107033832A CN201710332752.1A CN201710332752A CN107033832A CN 107033832 A CN107033832 A CN 107033832A CN 201710332752 A CN201710332752 A CN 201710332752A CN 107033832 A CN107033832 A CN 107033832A
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3215—Polyhydroxy compounds containing aromatic groups or benzoquinone groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3228—Polyamines acyclic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
- C08G18/6415—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63 having nitrogen
- C08G18/6446—Proteins and derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/6505—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6523—Compounds of group C08G18/3225 or C08G18/3271 or polyamines of C08G18/38
- C08G18/6529—Compounds of group C08G18/3225 or polyamines of C08G18/38
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/6547—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen the low-molecular compounds being compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- Organic Chemistry (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The present invention relates to a kind of wood-based plate with without aldehyde composite adhesive and preparation method thereof；It is prepared from by the raw material of following parts by weight：80 120 parts of cotton dregs, 800 1200 parts of deionized water, 5 10 parts of ammoniacal liquor, 48 parts of hydrochloric acid, natural modified dose 10 20 parts, 20 40 parts of urea, 10 30 parts of jelly powder, 20 30 parts of crosslinking enhancer, 10 15 parts of filler；Preparation process of the present invention does not pollute indoor environment without the harmful substances such as formaldehyde, the formaldehydeless release of wood-based plate of splicing；Oily processed side product is carried for raw material using cottonseed, production cost is saved, and is helped to alleviate soybean protein raw material disparities between supply and demand, is improved adhesive cohesive strength and water proofing property；Raw material comes from renewable resource, meets environmental protection and continuable development principle.
Description
Technical field
The present invention relates to a kind of based Wood Adhesives and preparation method thereof, and in particular to a kind of wood-based plate is combined gluing with without aldehyde
Agent and preparation method thereof.
Background technology
In recent years, the industry development of China's wood-based plate is rapid, and 2015 annual productions are 2.87 billion cubic meters.As the public is to household
The continuous enhancing of environmental consciousness, the requirement that country and professional standard are limited the quantity wood-based panel product Form aldehyde release is progressively strict, product
Environmental protection grade requirement reach E1 grades, portioned product is already close to E0 grades of formaldehyde limitation requirement.Due to gluing used in wood-based plate
Agent is mainly formaldehyde system thermosetting resin, and the design feature of itself is determined carries out technology and control in any case no matter
It is all the presence of certain Form aldehyde release theoretically or from practical application.Therefore, research and development function admirable is formaldehydeless
Addition adhesive is the basic method for solving Formaldehyde.
It is the focus studied at present without aldehyde adhesive to prepare bio-based using plant and animal albumen, is concentrated mainly on soybean
The research of albumen adhesive, is typically to be formed by bean powder or soybean protein addition crosslinking agent and auxiliary agent modulation, by being produced to soybean
Product (soy meal or separation soybean protein) are denatured and chemical modification, and soybean protein is transformed into by natural polymer to be had
The cross-linked network of synthetic resin feature.Soybean prod also can as synthetic resin filler or modifying agent, reduce formaldehyde
Deng the burst size of volatile materials, improve in adhesive the content of renewable component and reduce cost.
The primary raw material dregs of beans of soy protein adhesives is the maximum plant protein material of current consumption, mainly for the production of
Protide feed, China's protide feedstuff breach in 2015 is 24,000,000 tons or so, it was predicted that to the year two thousand twenty, breach will
Up to 40,000,000 tons, therefore it is significant to develop and use other protein resources.From the point of view of current actual conditions, dregs of beans is tight
It is pretty, and cotton dregs utilization rate is not high.The market price of dregs of beans in 2015 is 2767 yuan/ton, and cotton dregs are 2305 yuan/ton, cotton dregs conduct
A kind of preferable, new albumen adhesive development of raw materials has a high potential.
China produces ten thousand tons of cottonseed 800-1000 per year, oil-containing 30-35%, albumen in the about 50-55% of benevolence containing cotton, cotton benevolence in cottonseed
35-38%.Cotton dregs, which are cottonseeds, soaks the byproduct of extract oil through precompressed extraction or direct solvent, protein content up to more than 50%,
But never it is utilized effectively, main cause is wherein to contain gossypol, growth of animal, therefore cotton can be influenceed after gossypol is edible
Dregs of rice addition in feed is only 3%-4%, and many places are cotton dregs as fertilizer returning to the field.Cottonseed can be direct by dephenolize technology
Dephenolization cottonseed protein is produced as high-quality protein feed, but as based Wood Adhesives synthesis material, cotton dregs need not move through dephenolize
Process, can directly be utilized.
The content of the invention
To solve the above problems, the invention provides a kind of wood-based plate with without aldehyde composite adhesive and preparation method thereof；It is
It is a kind of by primary raw material of non-dephenolize cotton dregs, technological operation is simple, bonding property is excellent, without aldehyde environmental protection composite wood adhesive
And preparation method thereof.
The present invention is adopted the following technical scheme that：
A kind of wood-based plate is prepared from without aldehyde composite adhesive by the raw material of following parts by weight：
80-120 parts of cotton dregs, 800-1200 parts of deionized water, 5-10 parts of ammoniacal liquor, 4-8 parts, natural modified dose 10-20 of hydrochloric acid
Part, 20-40 parts of urea, 10-30 parts of jelly powder, 20-30 parts of crosslinking enhancer, 10-15 parts of filler.
Described natural modified dose is vegetable oil polyol；
The vegetable oil polyol preparation method is：Vegetable oil is reacted with peroxy acid to 2-4 in a solvent small at 50-60 DEG C
Shi Shengcheng epoxidized vegetable oils, epoxidized vegetable oil and alcohol, deionized water and catalyst are reacted 1-2 hours at the boil, will
Product obtains vegetable oil-based polyols after being neutralized with alkalescent material；The viscosity of the vegetable oil-based polyols is 2000-
5000mPas, hydroxyl value is 150-220mgKOH/g.
The vegetable oil is cottonseed oil, soybean oil, rapeseed oil, castor oil, olive oil, sesame oil, safflower oil, linseed
The one or more of oil, rice bran oil or palm oil.
The peroxy acid be peroxyformic acid, Peracetic acid, trichloroperacetic acid or one kind in benzyloxy peroxyformic acid or
It is several.
The solvent is the one or more in formic acid, acetic acid or chloroform.
The alcohol is methanol and one kind in isopropanol, chloroform, four kinds of mixtures of formic acid or acetic acid, and methanol is in every kind of mixing
Ratio in thing is not higher than volume ratio 20%.
The catalyst is sulfuric acid, phosphoric acid, hydrochloric acid, fluoboric acid, p-methyl benzenesulfonic acid or the bentonite of acid activation or montmorillonite
In one kind.
The alkalescent material is one kind in ammoniacal liquor, calcium carbonate, sodium acid carbonate or magnesium carbonate.
The crosslinking enhancer is the mixture end-blocking using sodium hydrogensulfite or sodium hydrogensulfite and ethyl acetoacetate
Toluene di-isocyanate(TDI), methyl diphenylene diisocyanate, poly- methyl diphenylene diisocyanate, isophorone diisocyanate
One or more in ester or polymethylene multi-phenenyl isocyanate.
The filler is flour, starch, tapioca starch, diatomite, kaolin, bentonite, talcum powder, wood powder or cellulose powder
Middle one or more.
The above-mentioned method without aldehyde composite adhesive is prepared the invention further relates to a kind of, is comprised the following steps：
(1) cotton dregs after extract oil are dried, ground with grinder, sieved through 100 eye mesh screens, the cotton dregs after must grinding
Powder.
(2) the cotton dregs powder after deionized water, grinding, ammoniacal liquor are added into reactor, after stirring 1 hour, centrifuges (3500r/
Min) handle 15 minutes, take supernatant to add hydrochloric acid, stir 20 minutes, centrifugation (3500r/min) is handled 15 minutes, obtains cottonseed
Albumen curd.
(3) deionized water, natural modified dose, urea are added into reactor, is warming up to 60-70 DEG C, add described cottonseed
Albumen curd, stirring is completely dissolved it, adds jelly powder, and host is made in dissolving after stirring.
(4) in use, host, crosslinking enhancer, uniform filling are mixed.
The present invention prepare without aldehyde composite adhesive, with following features：
(1) preparation process is without harmful substances such as formaldehyde, and indoor ring is not polluted in the formaldehydeless release of wood-based plate of splicing
Border；
(2) oily processed side product is carried for raw material using cottonseed, save production cost, help to alleviate soybean protein raw material confession
Contradiction is sought, added value of product is improved, raw material comes from renewable resource, meets environmental protection and continuable development principle；
(3) modifying agent used is the polyalcohol of plant oil modified preparation, and degree of functionality is higher, is conducive to increase solidification glue-line
Crosslink density, its fatty Long carbon chain is favorably improved the hydrolytic stability of adhesive and assigns adhesive certain toughness.Raw material
From renewable resource, meet environmental protection and continuable development principle；
(4) crosslinking enhancer used can extend the working life of adhesive after impregnation, meet work for blocked isocyanate
Factory's different demands.The isocyanates of end-blocking discharges isocyanate groups at 70-100 DEG C, can meet wood-based plate hot pressing requirement.It is different
Cyanate group can react with the group in vegetable oil-based polyols, urea, gossypol, cottonseed protein, generate netted hand over
It is coupled structure through in protein conformation, improves adhesive cohesive strength and water proofing property.
(5) adhesive for preparing of the present invention has suitable viscosity and storage period, is glued glued board and can reach national standard
GB17657-1999《Wood-based plate and face artificial board physicochemical property experimental method》Middle II classes glued board requirement.
Embodiment
Vegetable oil polyol preparation method described in the present embodiment is：Each component consumption described in the present embodiment is with parts by weight
Meter：
10 portions of cottonseed oils and 20 parts of peroxyformic acids are reacted into 3 hours generation epoxidation cottons in 200 parts of formic acid at 50-60 DEG C
Seed oil, by 10 portions of epoxidation cottonseed oils and 15 parts of alcohol, (methanol and isopropanol mixture, volume ratio are 1：5), 80 parts of deionized waters
And 3 parts of p-methyl benzenesulfonic acid are reacted 1.5 hours at the boil, and cottonseed based oil is obtained after product is neutralized with ammoniacal liquor.Gained
The viscosity of cottonseed based oil is 3850mPas, and hydroxyl value is 205mgKOH/g.
Embodiment 1：
80 parts of cotton dregs after extract oil are dried, ground with grinder, are sieved through 100 eye mesh screens, the cotton dregs after must grinding
Powder.Cotton dregs powder after 800 parts of deionized waters, 80 parts of grindings, 5 parts of ammoniacal liquor are added into reactor, are stirred at room temperature 1 hour, with
3500r/min centrifugation is handled 15 minutes, takes supernatant to add 4 parts of hydrochloric acid, is stirred 20 minutes, with 3500r/min speed
Centrifugal treating 15 minutes, the cottonseed protein curdled milk after must centrifuging.By 200 parts of deionized waters, 10 parts of cottonseed oil modified polyalcohols, 20
Part urea adds reactor, is warming up to 60-70 DEG C, adds cottonseed protein curdled milk, and stirring is completely dissolved it, adds 10 parts of gelatin
Powder, host is made in dissolving after stirring.In use, adding 20 parts of poly- methyl diphenylene diisocyanates of end-blocking, 10 in host
Part flour, composite adhesive is produced after uniform mixing.The performance indications of adhesive are shown in Table 1.
Embodiment 2：
100 parts of cotton dregs after extract oil are dried, ground with grinder, are sieved through 100 eye mesh screens, the cotton dregs after must grinding
Powder.Cotton dregs powder after 900 parts of deionized waters, 90 parts of grindings, 10 parts of ammoniacal liquor are added into reactor, are stirred at room temperature 1 hour, with
3500r/min centrifugation is handled 15 minutes, takes supernatant to add 8 parts of hydrochloric acid, is stirred 20 minutes, with 3500r/min speed
Centrifugal treating 15 minutes, the cottonseed protein curdled milk after must centrifuging.By 300 parts of deionized waters, 15 parts of soybean oil modified polyalcohols, 25
Part urea adds reactor, is warming up to 60-70 DEG C, adds cottonseed protein curdled milk, and stirring is completely dissolved it, adds 15 parts of gelatin
Powder, host is made in dissolving after stirring.In use, adding 25 parts of end-blocking polymethylene multi-phenenyl isocyanates, 15 in host
Part starch, composite adhesive is produced after uniform mixing.The performance indications of adhesive are shown in Table 1.
Embodiment 3：
120 parts of cotton dregs after extract oil are dried, ground with grinder, are sieved through 100 eye mesh screens, the cotton dregs after must grinding
Powder.Cotton dregs powder after 1000 parts of deionized waters, 100 parts of grindings, 10 parts of ammoniacal liquor are added into reactor, are stirred at room temperature 1 hour, with
3500r/min centrifugation is handled 15 minutes, takes supernatant to add 8 parts of hydrochloric acid, is stirred 20 minutes, with 3500r/min speed
Centrifugal treating 15 minutes, the cottonseed protein curdled milk after must centrifuging.By 200 parts of deionized waters, 20 parts of castor oil modified polyalcohols, 35
Part urea adds reactor, is warming up to 60-70 DEG C, adds cottonseed protein curdled milk, and stirring is completely dissolved it, adds 10 parts of gelatin
Powder, host is made in dissolving after stirring.In use, adding 30 parts of end-blocking polymethylene multi-phenenyl isocyanates, 10 in host
Part wood powder, composite adhesive is produced after uniform mixing.The performance indications of adhesive are shown in Table 1.
Verify example：
The composite adhesive prepared in above-described embodiment 1-3 is respectively adopted and suppresses three layers of glued board, board using poplar board used is thick
Spend for 1.6-1.7mm, breadth is 300 × 300mm, and moisture content is 10-12%.Using double spread, glue-spread is：300g/m2,
Ageing 20 minutes is closed after gluing, then precompressed 30 minutes under pressure 0.8MPa, 7.0 points of hot pressing under pressure 1.2-1.4MPa
Clock, 150 DEG C of hot pressing temperature.
The three layers of glued board prepared according to the method described above, according to national standard GB 17657-1999《Wood-based plate and face artificial board
Physicochemical property experimental method》Test specimen (is placed on dipping 3 hours, Ran Hou in 63 ± 3 DEG C of hot water by the requirement of middle II classes glued board
Cool down 10 minutes at room temperature) the wet shape bonding strength of test.Embodiment 1-3 plywood character testing result is as shown in table 2.As a result
Show, II class glued board requirements are met with glued board prepared by the composite adhesive of the present invention.
The adhesive performance indications of table 1
Normative reference：National standard GB14074-2006《Wood adhesive and its resin method of inspection》
The glued board of table 2 gluing strength test results
Normative reference：National standard GB17657-1999《Wood-based plate and face artificial board physicochemical property experimental method》.
Claims (4)
1. a kind of wood-based plate is with without aldehyde composite adhesive, it is characterised in that be made up of following component by weight：
80-120 parts of cotton dregs, 800-1200 parts of deionized water, 5-10 parts of ammoniacal liquor, 4-8 parts of hydrochloric acid, natural modified dose 10-20 parts, urine
Plain 20-40 parts, 10-30 parts of jelly powder, 20-30 parts of crosslinking enhancer, 10-15 parts of filler；
Described natural modified dose is vegetable oil polyol；
The crosslinking enhancer is the first of the mixture end-blocking using sodium hydrogensulfite or sodium hydrogensulfite and ethyl acetoacetate
Phenylene diisocyanate, methyl diphenylene diisocyanate, poly- methyl diphenylene diisocyanate, IPDI or
One or more in polymethylene multi-phenenyl isocyanate；
The filler is one in flour, starch, tapioca starch, diatomite, kaolin, bentonite, talcum powder, wood powder or cellulose powder
Plant or several.
2. a kind of wood-based plate as claimed in claim 1 is with without aldehyde composite adhesive, it is characterised in that the vegetable oil polyol
Preparation method is：Vegetable oil and peroxy acid are reacted into 2-4 hours generation epoxidized vegetable oils in a solvent at 50-60 DEG C, by ring
Oxidation vegetable oil reacts 1-2 hours at the boil with alcohol, deionized water and catalyst, after product is neutralized with alkalescent material
To vegetable oil-based polyols；
The vegetable oil is cottonseed oil, soybean oil, rapeseed oil, castor oil, olive oil, sesame oil, safflower oil, linseed oil, rice
The one or more of oil extracted from rice husks or palm oil；
The peroxy acid is the one or more in peroxyformic acid, Peracetic acid, trichloroperacetic acid or benzyloxy peroxyformic acid；
The solvent is the one or more in formic acid, acetic acid or chloroform；
The alcohol is methanol and one kind in isopropanol, chloroform, four kinds of mixtures of formic acid or acetic acid, and methanol is in every kind of mixture
Ratio be not higher than volume ratio 20%；
During the catalyst is sulfuric acid, phosphoric acid, hydrochloric acid, fluoboric acid, p-methyl benzenesulfonic acid or the bentonite of acid activation or montmorillonite
It is a kind of；
The alkalescent material is one kind in ammoniacal liquor, calcium carbonate, sodium acid carbonate or magnesium carbonate.
3. a kind of wood-based plate as claimed in claim 1 is with without aldehyde composite adhesive, it is characterised in that the vegetable oil based polyatomic
The viscosity of alcohol is 2000-5000mPas, and hydroxyl value is 150-220mgKOH/g.
4. prepare method of a kind of wood-based plate without aldehyde composite adhesive as claimed in claim 1, it is characterised in that step is such as
Under：
1) cotton dregs after extract oil are dried, ground with grinder, sieved through 100 eye mesh screens, the cotton dregs powder after must grinding；
2) the cotton dregs powder after deionized water, grinding, ammoniacal liquor are added into reactor, after stirring 1 hour, 3500r/min centrifuges 15 points
Clock, takes supernatant to add hydrochloric acid, stirs 20 minutes, and 3500r/min is centrifuged 15 minutes, obtains cottonseed protein curdled milk；
3) deionized water, natural modified dose, urea are added into reactor, is warming up to 60-70 DEG C, added described cottonseed protein and coagulate
Breast, stirring is completely dissolved it, adds jelly powder, and host is made in dissolving after stirring；
4) it is made in use, host, crosslinking enhancer, uniform filling are mixed without aldehyde composite adhesive.
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| CN201710332752.1A CN107033832B (en) | 2017-05-12 | 2017-05-12 | Formaldehyde-free composite adhesive for artificial board and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112920771A (en) * | 2021-01-28 | 2021-06-08 | 山东农业大学 | Self-crosslinking cottonseed protein adhesive and preparation method thereof |
| CN114012857A (en) * | 2021-10-15 | 2022-02-08 | 廊坊民丰木业有限公司 | Preparation method of high-performance magnesium-based inorganic flame-retardant shaving board |
| CN114350313A (en) * | 2022-01-10 | 2022-04-15 | 南京林业大学 | Cottonseed protein-glycosyl environment-friendly adhesive as well as preparation method and application thereof |
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| CN112920771A (en) * | 2021-01-28 | 2021-06-08 | 山东农业大学 | Self-crosslinking cottonseed protein adhesive and preparation method thereof |
| CN112920771B (en) * | 2021-01-28 | 2022-03-25 | 山东农业大学 | Self-crosslinking cottonseed protein adhesive and preparation method thereof |
| CN114012857A (en) * | 2021-10-15 | 2022-02-08 | 廊坊民丰木业有限公司 | Preparation method of high-performance magnesium-based inorganic flame-retardant shaving board |
| CN114350313A (en) * | 2022-01-10 | 2022-04-15 | 南京林业大学 | Cottonseed protein-glycosyl environment-friendly adhesive as well as preparation method and application thereof |
| CN114350313B (en) * | 2022-01-10 | 2022-09-23 | 南京林业大学 | Cottonseed protein-glycosyl environment-friendly adhesive as well as preparation method and application thereof |
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