CN104962227B - A kind of full biomass based Wood Adhesives and preparation method and application - Google Patents
A kind of full biomass based Wood Adhesives and preparation method and application Download PDFInfo
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- CN104962227B CN104962227B CN201510384784.7A CN201510384784A CN104962227B CN 104962227 B CN104962227 B CN 104962227B CN 201510384784 A CN201510384784 A CN 201510384784A CN 104962227 B CN104962227 B CN 104962227B
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- furfuryl alcohol
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Abstract
The invention discloses a kind of full biomass based Wood Adhesives and preparation method and application, described full biomass based Wood Adhesives are the tannin/furfuryl alcohol compound systems obtained as raw material through polycondensation cross-linking reaction with tannin and furfuryl alcohol, and over dry tannin is 1 with the mass ratio of furfuryl alcohol：1~1.5.Preparation method includes the preparation of tannin concentrate, tannin/furfuryl alcohol compound system preparation process.The application of the present invention is application of the described full biomass based Wood Adhesives in the building materials for preparing formaldehydeless release.The present invention replaces powdery tannin using tannin concentrate, not only reduces energy consumption and the pollution of dry run, while remaining the autoreactivity characteristic of tannin.The present invention substitutes traditional formaldehyde series adhesive with full biomass based Wood Adhesives, thoroughly eliminates Form aldehyde release problem, and reduces dependence of the wood working industry to petroleum chemicals.
Description
Technical field
The invention belongs to wood deep processing technical field, and in particular to a kind of full biomass based Wood Adhesives and its preparation side
Method and application.
Background technology
Particieboard is used widely in fields such as building, the productions of home decoration building materials, plate fitment.Big absolutely portion on market
Divide particieboard still using formaldehyde series synthetic resin（Lauxite, phenolic resin and Trimeric β peptide）To make
Standby.Though particieboard intensity prepared by the series plastics is good, weatherability is strong, inevitably there is Form aldehyde release, mainly
Problem be the presence of the defects such as the high and raw material of production cost is non-renewable.In today of consumer's " talking aldehyde discoloration ", find a kind of
The method of above-mentioned technical problem can be solved and product is very important.
Content of the invention
The first object of the present invention is to provide a kind of full biomass based Wood Adhesives；Second purpose is described in offer
The preparation method of full biomass based Wood Adhesives；3rd purpose is the application of the full biomass based Wood Adhesives for providing described.
The first object of the present invention is achieved in that described full biomass based Wood Adhesives are to be with furfuryl alcohol with tannin
The tannin that raw material is obtained through polycondensation cross-linking reaction/furfuryl alcohol compound system, over dry tannin are 1 with the mass ratio of furfuryl alcohol：1~1.5.
The second object of the present invention is achieved in that including the preparation of tannin concentrate, tannin/furfuryl alcohol compound system and prepares
Step, specifically includes：
Prepared by A, tannin concentrate：Will be enriched in tannin bark broken after, with water method for extracting under the conditions of 90 ~ 110 DEG C
Backflow 2 ~ 3h of extracting obtains the tannin aqueous solution, obtains tannin concentrate after concentration；
Prepared by B, tannin/furfuryl alcohol compound system：Furfuryl alcohol is added to, by formula rate, the tannin concentration that step A is prepared
In liquid, stir and evenly mix, regulation system pH value obtains object full biomass based Wood Adhesives for 10 ~ 12.
The third object of the present invention is achieved in that described full biomass based Wood Adhesives are preparing low no formaldehyde
Application in the building materials of release.
Tannin is the water extract of plant, is the complicated polyphenolic substance produced in plant body, is the main component of tannin extract,
It is divided into hydrolysable tannins and Condesed tannins, the tannin raw material involved by this patent hydrolyzes preshrunk liquid for Condesed tannins.Condensing
The oligomer that class tannin is made up of the different flavonoids unit of the degree of polycondensation is constituted, with chemical constitution as phenols（As 1 institute of formula
Show）, the tannin of different tree species, respective proportion are different.
Formula 1（Tannin flavonoids monomer structure）
Alkalescence condition places an order would rather be to realize from polycondensation, and as shown in Equation 2, this is the theoretical foundation of tannin based Wood Adhesives.
Formula 2（The self-condensation reaction that tannin occurs under alkalescence condition）
Domestic existing document shows, powder tannin was more or less for wood-based plate in more than ten year of past
Prepare, prepared by the especially production of glued board, comparatively, the powdery tannin resin of foreign study has successfully expanded to wood shavings
The woodwork production field such as plate.The tannin resin of studies in China exploitation is not 100% pure living beings resin, but tannin portion
The tannin base synthetic resin for dividing fortified phenol or resorcinol to prepare with blending method, the tannin addition of this resin is very
Limited, and the resin presence solidification phenomenon after being blended is indefinite, hardening time is asynchronous, and the active phase is short, and bonding strength is low, formaldehyde
Burst size does not obtain the problems such as basic solution.Full biomass particieboard 100% according to the present invention is come by biomass material
Prepare, be not simple interpolation powdery tannin in formaldehyde series plastics, but tannin concentrate is directly used, then add one
Quantitative furfuryl alcohol, adjusts system pH, adds obtained a kind of full biomass based Wood Adhesives after curing agent, and for digging
Prepared by the production of card.In the present invention, furfuryl alcohol used comes from the byproduct of agricultural crop straw processing.
Full biomass particieboard is, and to be primary raw material with full biomass based Wood Adhesives and wood particle act in curing agent
One class particieboard of lower preparation.The particieboard has excellent mechanical strength, and formaldehydeless release, is fully able to reach GB/T
17657-1999《Test methods of evaluating the properties of wood-based panels and surface decorated wood-based panels》The requirement of national standard.
The know-why of the present invention is polycondensation cross-linking reaction occurs using tannin with furfuryl alcohol, generates and can be used for particieboard system
Standby full biomass tannin resin adhesive（As shown in Equation 3）.
Formula 3（The reaction occurred between furfuryl alcohol and tannin）
Compared with traditional tannin based Wood Adhesives, the present invention replaces powdery tannin using tannin concentrate, not only reduces
The energy consumption of dry run and pollution, while remain the autoreactivity characteristic of tannin.The present invention is with full biomass based Wood Adhesives
Substitute traditional formaldehyde series adhesive, thoroughly eliminate Form aldehyde release problem, and reduce wood working industry to petroleum chemicals according to
Rely.
Specific embodiment
With reference to embodiment, the present invention is further illustrated, but never in any form the present invention is any limitation as,
Based on present invention teach that any conversion for being made or replacement, belong to protection scope of the present invention.
Full biomass based Wood Adhesives of the present invention, are obtained as raw material through polycondensation cross-linking reaction with tannin with furfuryl alcohol
Tannin/furfuryl alcohol compound system, the mass ratio of over dry tannin and furfuryl alcohol is 1：1~1.5.
Described full biomass based Wood Adhesives outward appearance be brown liquid, wherein solid masses percentage composition be 40 ~
60%, viscosity is 450 ~ 550mPaS, and pH value is 10 ~ 12.
The preparation method of full biomass based Wood Adhesives of the present invention, it is characterised in that including tannin concentrate system
Standby, tannin/furfuryl alcohol compound system preparation process, specifically includes：
Prepared by A, tannin concentrate：Will be enriched in tannin bark broken after, with water method for extracting under the conditions of 90 ~ 110 DEG C
Backflow 2 ~ 3h of extracting obtains the tannin aqueous solution, obtains tannin concentrate after concentration；
Prepared by B, tannin/furfuryl alcohol compound system：Furfuryl alcohol is added to, by formula rate, the tannin concentration that step A is prepared
In liquid, stir and evenly mix, regulation system pH value obtains object full biomass based Wood Adhesives for 10 ~ 12.
Described tannin concentrate performance indications are：Outward appearance is brown liquid, and solid masses percentage composition is 40 ~ 55%,
Viscosity is 300 ~ 450mPaS, and pH value is 5.0 ~ 5.5.
Described furfuryl alcohol is the byproduct for coming from the processing of farming stalk.
The application of full biomass based Wood Adhesives of the present invention is being prepared for described full biomass based Wood Adhesives
Application in the building materials of low no Form aldehyde release.
Application of the described full biomass based Wood Adhesives in the particieboard for preparing low no Form aldehyde release.
Described full biomass based Wood Adhesives prepare the particieboard of low no Form aldehyde release includes adhesive modulation, wood shavings
Plate preparation process, specifically includes：
A, adhesive modulation：Full biomass based Wood Adhesives are taken, adds the solidification of over dry tannin weight/mass percentage composition 6 ~ 20%
Agent, stirs；
Prepared by B, particieboard：
1）The full biomass based Wood Adhesives for adding curing agent are uniformly mixed with wood particle, wherein full biomass wood
Material adhesive addition is the 8 ~ 15% of over dry wood shavings mass percent, and wood shavings moisture content is 1 ~ 9%；
2）Wood shavings after mixing are prepared object nothing through shaping-precompressed-hot-press solidifying operation of mating formation
The particieboard of Form aldehyde release.
Curing agent described in step A is one or more in hexamethylenetetramine, nitroform or polyformaldehyde.
Step B 2）Described in hot-press solidifying hot pressing temperature be 180 ~ 210 DEG C, hot pressing time be 25 ~ 35 s/mm, heat
Pressure unit pressure is 3.5 ~ 4.5MPa.
Full biomass based Wood Adhesives of the present invention are using timber tannin concentrate and furfuryl alcohol resin complex
System, outward appearance are brown liquid, solids content：40～60%, pH：10～12, viscosity：450～550 mPas, its preparation method
As follows：1）Prepared by tannin concentrate：Tannin concentrate, wherein solids content are obtained after water extracting and pre-concentration technique：40～
55%, pH：Between 5.0～5.5, viscosity：300～450 mPas；2）Prepared by tannin/furfuryl alcohol compound system：Quantitative furfuryl alcohol is added
Enter in tannin concentrate, mechanical agitation is mixed up to abundant at ambient temperature, then be 10 with NaOH regulation system pH value
～12.
The modulation of full biomass based Wood Adhesives of the present invention is to be slowly added to 6 in tannin/furfuryl alcohol compound system
～20% curing agent, obtains homogeneous, stable full biomass based Wood Adhesives after continuously stirred 5～10 minutes.
Full biomass wood shavings board fabrication method of the present invention, is to substitute traditional formaldehyde system with biomass wood adhesive
Row adhesive, wherein biomass wood adhesive are mainly formed by tannin concentrate, furfuryl alcohol modulation.The full biomass plane of the present invention
Card manufacture method includes：1）After tannin concentrate is mixed in proportion with furfuryl alcohol, adjustment mixed liquor pH value is 10～12, adds
The curing agent of over dry tannin weight 6～20%, stirs；2）To add the tannin/furfuryl alcohol compound resin of curing agent with wooden
Wood shavings uniformly mix, and wherein tannin adhesive addition is the 8～15% of over dry wood shavings weight, and wood shavings moisture content is 1～9%；3）
Mixed wood shavings are through shaping of mating formation -- precompressed -- operation such as hot-press solidifying, wherein 180～210 DEG C of hot pressing temperature, hot pressing time
For 25～35 s/mm, hot pressing unit pressure is 3.5～4.5 MPa.
With specific embodiment, the present invention will be further described below：
Embodiment 1
1）Prepared by tannin concentrate：Will be enriched in tannin bark broken after, with water method for extracting under the conditions of 90～100 DEG C
Backflow extracting 3 hours, and the tannin aqueous solution is concentrated into 40% aqueous solution, the property of the tannin concentrate by pre- condensing technique
Can index be：Outward appearance is brown liquid, solids content：40%、pH：5.0, viscosity：300 mPas.
2）Prepared by tannin/furfuryl alcohol compound system：Tannin concentrate is added toward in container, in mechanical agitation power once
Property add furfuryl alcohol, the ratio of over dry tannin and furfuryl alcohol is 1:1, fully mix, be 10 with NaOH regulation system pH value, should
Tannin adhesive outward appearance is brown liquid, solids content：40%、pH：10th, viscosity：450 mPas.
3）Adhesive system is modulated：6% hexamethylenetetramine is slowly added in tannin/furfuryl alcohol compound system, is persistently stirred
Standby after mixing 5 minutes.
4）Prepared by full biomass particieboard：1., after mixing tannin concentrate with furfuryl alcohol in proportion, it is 10 to adjust its pH, stirs
Mix uniform, the hexamethylenetetramine of addition over dry tannin weight 6%；2. will add the tannin/furfuryl alcohol compound resin of curing agent with
Wood particle uniformly mixes, and wherein tannin adhesive addition is the 8% of over dry wood shavings weight, and wood shavings moisture content is 1.5%；3. mix
Wood shavings after conjunction are through shaping of mating formation -- precompressed -- operation such as hot-press solidifying, wherein 180～210 DEG C of hot pressing temperature, hot pressing time is
25～35 s/mm, hot pressing unit pressure are 3.5～4.5MPa.
The testing result of the particieboard that the present embodiment is prepared is as follows：
Burst size of methanal：2.8 mg/100g, internal bond strength：0.68 MPa, 23 MPa of MOR.
Embodiment 2
1）Prepared by tannin concentrate：Will be enriched in tannin bark broken after, with water method for extracting in 100～110 DEG C of conditions
Lower backflow extracting 2 hours, and the tannin aqueous solution is concentrated into 55% aqueous solution by pre- condensing technique, the tannin concentrate
Performance indications are：Outward appearance is brown liquid, solids content：40～55%, pH：5.0～5.5, viscosity：300～450 mPas.
2）Prepared by tannin/furfuryl alcohol compound system：Tannin concentrate is added toward in container, in mechanical agitation power once
Property add furfuryl alcohol, the ratio of over dry tannin and furfuryl alcohol is 1:1.5, fully mix, be 12 with NaOH regulation system pH value.
The tannin adhesive outward appearance is brown liquid, solids content： 60%、pH：12nd, viscosity： 550 mPas.
3）Adhesive system is modulated：20% nitroform is slowly added in tannin/furfuryl alcohol compound system, is persistently stirred
Standby after mixing 10 minutes.
4）Prepared by full biomass particieboard：1., after mixing tannin concentrate with furfuryl alcohol in proportion, it is 12 to adjust its pH, stirs
Mix uniform, the nitroform of addition over dry tannin weight 20%；2. will add the tannin/furfuryl alcohol compound resin of curing agent with
Wood particle uniformly mixes, and wherein tannin adhesive addition is the 15% of over dry wood shavings weight, and wood shavings moisture content is 1%；3. mix
Wood shavings after conjunction are through shaping of mating formation -- precompressed -- operation such as hot-press solidifying, wherein 180～210 DEG C of hot pressing temperature, hot pressing time
For 25～35 s/mm, hot pressing unit pressure is 3.5～4.5MPa.
The testing result of the particieboard that the present embodiment is prepared is as follows：
Burst size of methanal：2.3 mg/100g, internal bond strength：0.62 MPa, 19 Mpa of MOR.
Embodiment 3
1）Prepared by tannin concentrate：Will be enriched in tannin bark broken after, with water method for extracting in 95～105 DEG C of conditions
Lower backflow extracting 2.5 hours, and the tannin aqueous solution is concentrated into 50% aqueous solution, the tannin concentrate by pre- condensing technique
Performance indications be：Outward appearance is brown liquid, solids content：50%、pH：5.3, viscosity：400 mPas.
2）Prepared by tannin/furfuryl alcohol compound system：Tannin concentrate is added toward in container, in mechanical agitation power once
Property add furfuryl alcohol, the ratio of over dry tannin and furfuryl alcohol is 1:1.2, fully mix, be 11 with NaOH regulation system pH value,
The tannin adhesive outward appearance is brown liquid, solids content： 5 0%、pH：11st, viscosity：490 mPas.
3）Adhesive system is modulated：10% hexamethylenetetramine and poly- first is slowly added in tannin/furfuryl alcohol compound system
Aldehyde, standby after continuously stirred 8 minutes.
4）Prepared by full biomass particieboard：1., after mixing tannin concentrate with furfuryl alcohol in proportion, it is 11 to adjust its pH, stirs
Mix the hexamethylenetetramine and polyformaldehyde for uniformly adding over dry tannin weight 10%；2. tannin/the furfuryl alcohol of curing agent will be added
Compound resin is uniformly mixed with wood particle, and wherein tannin adhesive addition is the 10% of over dry wood shavings weight, wood shavings moisture content
For 5%；3. mixed wood shavings are through shaping of mating formation -- precompressed -- operation such as hot-press solidifying, wherein 180～210 DEG C of hot pressing temperature,
Hot pressing time is 25～35 s/mm, and hot pressing unit pressure is 3.5～4.5MPa.
The testing result of the particieboard that the present embodiment is prepared is as follows：
Burst size of methanal：3.5 mg/100g, internal bond strength：0.78 MPa, 28 MPa of MOR.
Embodiment 4
1）Prepared by tannin concentrate：Will be enriched in tannin bark broken after, with water method for extracting in 90～110 DEG C of conditions
Lower backflow extracting 2.8 hours, and the tannin aqueous solution is concentrated into 48% aqueous solution, the tannin concentrate by pre- condensing technique
Performance indications be：Outward appearance is brown liquid, solids content：47%、pH：5.4, viscosity：430 mPas.
2）Prepared by tannin/furfuryl alcohol compound system：Tannin concentrate is added toward in container, in mechanical agitation power once
Property add furfuryl alcohol, the ratio of over dry tannin and furfuryl alcohol is 1:1.4, fully mix, be 12 with NaOH regulation system pH value,
The tannin adhesive outward appearance is brown liquid, solids content： 60%、pH：12nd, viscosity： 550 mPas.
3）Adhesive system is modulated：It is slowly added to 18% polyformaldehyde in tannin/furfuryl alcohol compound system, continuously stirred 9 points
Standby after clock.
4）Prepared by full biomass particieboard：1., after mixing tannin concentrate with furfuryl alcohol in proportion, it is 12 to adjust its pH, stirs
Mix uniform, the polyformaldehyde of addition over dry tannin weight 18%；2. will add the tannin/furfuryl alcohol compound resin of curing agent with wooden
Wood shavings uniformly mix, and wherein tannin adhesive addition is the 12% of over dry wood shavings weight, and wood shavings moisture content is 1～9%；3. mix
Wood shavings afterwards are through shaping of mating formation -- precompressed -- operation such as hot-press solidifying, wherein 180～210 DEG C of hot pressing temperature, hot pressing time are 25
～35 s/mm, hot pressing unit pressure are 3.5～4.5MPa.
The testing result of the particieboard that the present embodiment is prepared is as follows：
Burst size of methanal：4.2 mg/100g, internal bond strength：0.76 MPa, 23 MPa of MOR.
Embodiment 5
1）Prepared by tannin concentrate：Will be enriched in tannin bark broken after, with water method for extracting under the conditions of 90～95 DEG C
Backflow extracting 3 hours, and the tannin aqueous solution is concentrated into 40% aqueous solution, the property of the tannin concentrate by pre- condensing technique
Can index be：Outward appearance is brown liquid, solids content：45%、pH：5.1, viscosity：350 mPas.
2）Prepared by tannin/furfuryl alcohol compound system：Tannin concentrate is added toward in container, in mechanical agitation power once
Property add furfuryl alcohol, the ratio of over dry tannin and furfuryl alcohol is 1:1.3, fully mix, be 11 with NaOH regulation system pH value,
The tannin adhesive outward appearance is brown liquid, solids content：55%、pH：11st, viscosity：540 mPas.
3）Adhesive system is modulated：15% hexamethylenetetramine and three nitre are slowly added in tannin/furfuryl alcohol compound system
Methylmethane, standby after continuously stirred 7 minutes.
4）Prepared by full biomass particieboard：1., after mixing tannin concentrate with furfuryl alcohol in proportion, it is 11 to adjust its pH, stirs
Mix the hexamethylenetetramine and nitroform for uniformly adding over dry tannin weight 15%；2. will add the tannin of curing agent/
Furfuryl alcohol compound resin is uniformly mixed with wood particle, and wherein tannin adhesive addition is the 9% of over dry wood shavings weight, and wood shavings contain
Water rate is 2%；3. mixed wood shavings are through shaping of mating formation -- precompressed -- operation such as hot-press solidifying, wherein hot pressing temperature 180～210
DEG C, hot pressing time is 25～35 s/mm, and hot pressing unit pressure is 3.5～4.5MPa.
The testing result of the particieboard that the present embodiment is prepared is as follows：
Burst size of methanal：3.1 mg/100g, internal bond strength：0.75 MPa, 19 MPa of MOR.
Claims (4)
1. a kind of full biomass based Wood Adhesives, it is characterised in that described full biomass based Wood Adhesives be with tannin and furfuryl alcohol
The tannin obtained through polycondensation cross-linking reaction for raw material/furfuryl alcohol compound system, over dry tannin are 1 with the mass ratio of furfuryl alcohol:1~1.5；
The preparation method of the full biomass based Wood Adhesives includes the preparation of tannin concentrate, tannin/furfuryl alcohol compound system preparation process,
Specifically include：
Prepared by A, tannin concentrate：Will be enriched in tannin bark broken after, flowed back under the conditions of 90 ~ 110 DEG C with water method for extracting
2 ~ 3h of extracting obtains the tannin aqueous solution, obtains tannin concentrate after concentration, and the tannin concentrate performance indications are：Outward appearance is palm fibre
Brown liquid, solid masses percentage composition are 40 ~ 55%, and viscosity is 300 ~ 450mPaS, and pH value is 5.0 ~ 5.5；
Prepared by B, tannin/furfuryl alcohol compound system：Furfuryl alcohol is added to, by formula rate, the tannin concentrate that step A is prepared
In, stirring and evenly mixing, regulation system pH value obtains object full biomass based Wood Adhesives for 10 ~ 12 and produces for particieboard, institute
Full biomass based Wood Adhesives outward appearance is stated for brown liquid, wherein solid masses percentage composition is 40 ~ 60%, viscosity is 450 ~
550mPaS, pH value are 10 ~ 12.
2. full biomass based Wood Adhesives according to claim 1, it is characterised in that described furfuryl alcohol is for coming from farming straw
The byproduct of stalk processing.
3. a kind of application of full biomass based Wood Adhesives described in claim 1, it is characterised in that the full biomass timber glue
Application of the glutinous agent in the particieboard for preparing low no Form aldehyde release.
4. the application of full biomass based Wood Adhesives according to claim 3, it is characterised in that described full biomass timber
Adhesive prepares the particieboard of low no Form aldehyde release includes adhesive modulation, particieboard preparation process, specifically includes：
A, adhesive modulation：Full biomass based Wood Adhesives are taken, the curing agent of over dry tannin weight/mass percentage composition 6 ~ 20% are added,
Stir；The curing agent is one or more in hexamethylenetetramine, nitroform or polyformaldehyde；
Prepared by B, particieboard：
1）The full biomass based Wood Adhesives for adding curing agent are uniformly mixed with wood particle, wherein full biomass timber glue
Glutinous agent addition is the 8 ~ 15% of over dry wood shavings mass percent, and wood shavings moisture content is 1 ~ 9%；
2）Wood shavings after mixing are prepared object low no formaldehyde through shaping-precompressed-hot-press solidifying operation of mating formation release
The particieboard that puts, the hot pressing temperature of hot-press solidifying is 180 ~ 210 DEG C, and hot pressing time is 25 ~ 35s/mm, and hot pressing unit pressure is
3.5~4.5MPa.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105399944A (en) * | 2015-11-11 | 2016-03-16 | 西南林业大学 | Tannin resin for grinding wheel binding agent |
| CN107641495B (en) * | 2017-10-19 | 2019-07-12 | 中国林业科学研究院木材工业研究所 | A kind of vegetable protein adhesive and its preparation method and application |
| CN108943307B (en) * | 2018-07-04 | 2021-07-09 | 西南林业大学 | Biomass particle board and preparation method thereof |
| CN109320676B (en) * | 2018-10-16 | 2021-04-02 | 西南林业大学 | High-hardness tannin-furfuryl alcohol (TF) resin modified by glyoxal and epoxy resin for grinding wheel binder and preparation method |
| CN110154459A (en) * | 2019-05-21 | 2019-08-23 | 西南林业大学 | A kind of high intensity palm fibrous composite and preparation method |
| CN110499141A (en) * | 2019-08-29 | 2019-11-26 | 贵州大学 | A kind of biomass crosslinking agent modified oil tea oil cake adhesive and preparation method and application |
| CN111063876B (en) * | 2019-12-31 | 2020-11-13 | 中南林业科技大学 | Graphene/tannin extract furfuryl alcohol resin derived carbon negative electrode material, and preparation method and application thereof |
| CN112080236B (en) * | 2020-09-25 | 2022-02-18 | 西南林业大学 | Tannin-based wood adhesive with good heat resistance and water resistance and preparation method thereof |
| CN112321785A (en) * | 2020-10-23 | 2021-02-05 | 北京林业大学 | Tannin-based shellfish bionic wood adhesive |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053386A (en) * | 1991-03-07 | 1991-07-31 | 中国林业科学研究院木材工业研究所 | Fire-resistant-chipboard |
| CN103881113A (en) * | 2014-03-04 | 2014-06-25 | 西南林业大学 | Preparation of environment-friendly tannin furan resin and application of resin in production of impregnated papers |
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2015
- 2015-06-30 CN CN201510384784.7A patent/CN104962227B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053386A (en) * | 1991-03-07 | 1991-07-31 | 中国林业科学研究院木材工业研究所 | Fire-resistant-chipboard |
| CN103881113A (en) * | 2014-03-04 | 2014-06-25 | 西南林业大学 | Preparation of environment-friendly tannin furan resin and application of resin in production of impregnated papers |
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