CN106753030A - Ultrabranching polyamide modified tannin adhesive and preparation method thereof, glued board and its application - Google Patents
Ultrabranching polyamide modified tannin adhesive and preparation method thereof, glued board and its application Download PDFInfo
- Publication number
- CN106753030A CN106753030A CN201710007806.7A CN201710007806A CN106753030A CN 106753030 A CN106753030 A CN 106753030A CN 201710007806 A CN201710007806 A CN 201710007806A CN 106753030 A CN106753030 A CN 106753030A
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- CN
- China
- Prior art keywords
- ultrabranching polyamide
- adhesive
- tannin
- polyamide modified
- modified tannin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27D—WORKING VENEER OR PLYWOOD
- B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
- B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
- B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
Abstract
The invention discloses a kind of ultrabranching polyamide modified tannin adhesive, its component includes ultrabranching polyamide solid and tannin powder, and wherein ultrabranching polyamide content is 1 6%wt of tannin content.Also disclose a kind of ultrabranching polyamide modified tannin adhesive base rubber plywood, the application of the preparation method of ultrabranching polyamide modified tannin adhesive and ultrabranching polyamide modified tannin adhesive in glued board is prepared.The present invention is using the dissaving polymer with a large amount of active function groups as crosslinking agent, to improve the degree of cross linking and condensation degree of dissolved between tannin molecule, reach the purpose for improving bonding strength and water resistance, compared to adhesive before modified, dry glue intensity can improve more than 27%, and wet bonding strength can improve more than 33%.
Description
Technical field
It is modified the present invention relates to a kind of ultrabranching polyamide modified tannin adhesive and preparation method thereof, ultrabranching polyamide
The application of tannin adhesive glued board and ultrabranching polyamide modified tannin adhesive in glued board is prepared, belongs to adhesive neck
Domain.
Background technology
Current China artifical plate product is applied to Furniture manufacturing manufacture and interior decoration design mostly, and wherein Lauxite is accounted for
The overwhelming majority of whole adhesive usage amount.Lauxite and its modified product are that condensation of the class containing formaldehyde is adhesive,
Free formaldehyde can be constantly discharged during the production and use of article of furniture, the living environment and quality of the life to people are caused
Influence.Research shows that the harmful substances such as the formaldehyde in domestic environment have stimulation to human organ such as eyes, respiratory tract and mucous membrane etc.
Effect, can also cause the diseases such as tracheitis, hepatic disease, carcinogenic and malignant tumour.Although by improving production technology as added
Formaldehyde catching agent, adjustment charge ratio, aggregation technique etc. can reduce Form aldehyde release, but China's adhesive industry exists in itself
Various development problems and drawback, the dispersion of one side industry production is single and technique falls behind, and such as most manufacturer's equipment are old
Old backwardness, production efficiency is low, and product quality is poor or even unqualified, and workman's production safety is without guarantee；Supervise in another aspect market
Pipe is ineffective, and such as " three wastes " discharge does not meet national requirements for environmental protection, and part index of correlation lacks effective examination requirements and standard.With
Upper a series of problems causes that adhesive industry has the wasting of resources and problem of environmental pollution, is unfavorable for upgrading and transformation and the hair of industry
Exhibition innovation.In recent years, some seminar and enterprise overcome the problem of Form aldehyde release using isocyanates adhesive, but because into
This and industrial adaptability and restrict large-scale popularization and application.Renewable resource is made full use of to research and develop the gluing of environmental protection
Agent has been increasingly becoming countries in the world wood processing industry circle focus of attention.Glue is prepared by raw material of environmental-friendly natural biomass resource
Stick is the hot subject in current wood adhesive field.The characteristic that the tannin of natural polyphenol structure has similar phenol can use
Carry out fortified phenol, the tannin adhesive with glue performance with the similar phenolic resin of ageing-resistant performance is prepared in research and development.But by
The a series of defect of tannin is exposed in tannin structure in itself and characteristic, such as the degree of cross linking is low and working life is short, glue-line physical force
And water resistance difference etc..
The content of the invention
It is an object of the invention to provide a kind of ultrabranching polyamide modified tannin adhesive that can improve bonding strength.
The present invention is achieved by the following technical solutions：A kind of ultrabranching polyamide modified tannin adhesive, its component
Including ultrabranching polyamide solid and tannin powder, wherein ultrabranching polyamide content is the 1-6%wt of tannin content.
Further, the adhesive is using preceding addition water, the glue that solid content is 42-55%wt is tuned into, with 30%
NaOH solution adjusts the pH=6-9 of glue.
Further, the adhesive is modulating uniform using the curing agent of preceding addition glue mass ratio 2.0-4.5%.
Further, the tannin be from larch, red bayberry, acacia mearnsii or Acacia mangiumwilld extract Condesed tannins and
Its mixture.
Further, the ultrabranching polyamide be aliphatic ultrabranching polyamide, aromatic series ultrabranching polyamide or
Aliphatic and aromatic series mixing ultrabranching polyamide.
Further, the curing agent is paraformaldehyde, hexamethylenetetramine or trishydroxymethylnitromethane.
Present invention also offers a kind of ultrabranching polyamide modified tannin adhesive base rubber plywood, it is above-mentioned to be that veneer is coated
Hot pressing is formed after ultrabranching polyamide modified tannin adhesive.
Present invention also offers the preparation method of above-mentioned ultrabranching polyamide modified tannin adhesive：Its step includes：
（1）1-6 in mass ratio：100 weigh ultrabranching polyamide solid and tannin powder, and addition water to mass concentration is after mixing
42-55%, is stirred, and the pH=6-9 of glue is adjusted with 30% NaOH solution；
（2）The curing agent of glue mass ratio 2.0-4.5% is added in ultrabranching polyamide modified tannin adhesive, is stirred.
Present invention also offers application of the above-mentioned ultrabranching polyamide modified tannin adhesive in glued board is prepared, its step
Suddenly include：
A is dried：Veneer drying to moisture content is less than 8%；
B gluings：Ultrabranching polyamide modified tannin adhesive, the g/m of glue-spread 260 are coated on veneer2, an ageing 15min left sides
The right side, assembly；
C hot pressing：Hot pressing temperature is 140 DEG C, and hot pressing time is 1.2min/mm, and hot pressing pressure is 1.0-1.2MPa.
The present invention using the dissaving polymer with a large amount of active function groups as crosslinking agent, with improve tannin molecule it
Between the degree of cross linking and condensation degree of dissolved, the purpose for improving bonding strength and water resistance is reached, compared to adhesive before modified, dry glue
Intensity can improve more than 27%, and wet bonding strength can improve more than 33%.
Specific embodiment
For a better understanding of the present invention, technical scheme is described in detail with instantiation below, but originally
Invention is not limited thereto.
Embodiment 1
First, in mass ratio 1：100 weigh ultrabranching polyamide solid and Baybery tannin powder, add water dense to quality after mixing
It is 45% to spend, and is stirred, and the pH=6 of glue is adjusted with 30% NaOH solution, the use of 3% hexamethylenetetramine of preceding addition is solidification
Agent；Then moisture content is dried the veneers to less than 8%, the g/m of glue-spread 2602, ageing 15min or so, assembly.Hot pressing temperature is
140 DEG C, hot pressing time is 1.2min/mm, and hot pressing pressure is 1.0-1.2MPa.Unmodified tannin adhesive manufacture glued board is done
Intensity is 0.58MPa, and wet strength is 0.49 MPa, the gluing of the glued board manufactured after ultrabranching polyamide modified tannin adhesive
Intensity reaches more than 0.85MPa, and amplification is up to 46.0%, and wet strength is up to 63.0% up to 0.80 more than MPa, amplification.
Embodiment 2
First, in mass ratio 2：100 weigh ultrabranching polyamide powder and Baybery tannin powder, add water dense to quality after mixing
It is 50% to spend, and is stirred, and the pH=6 of glue is adjusted with 30% NaOH solution, the use of 3.8% hexamethylenetetramine of preceding addition is solid
Agent；Then moisture content is dried the veneers to less than 8%, the g/m2 of glue-spread 260, is aged 15min or so, assembly.Hot pressing temperature
It it is 140 DEG C, hot pressing time is 1.2min/mm, hot pressing pressure is 1.0-1.2MPa.Unmodified tannin adhesive manufactures glued board
Dry strength is 0.58MPa, and wet strength is 0.49 MPa, the glue of the glued board manufactured after ultrabranching polyamide modified tannin adhesive
Close intensity and reach more than 0.76MPa, amplification is up to 31.0%, and wet strength is up to 53.0% up to 0.75 more than MPa, amplification.
Embodiment 3
First, in mass ratio 4：100 weigh ultrabranching polyamide powder and larch tannin powder, and water to quality is added after mixing
Concentration is 55%, is stirred, and adjusts pH=8, the use of 4.2% trishydroxymethylnitromethane of preceding addition is curing agent；Then by veneer
Dry to moisture content and be less than 8%, the g/m of glue-spread 2902, ageing 15min or so, assembly.Hot pressing temperature is 135 DEG C, during hot pressing
Between be 1.2min/mm, hot pressing pressure is 1.0-1.2MPa.Unmodified tannin adhesive manufacture glued board dry strength is 0.51MPa,
Wet strength is 0.46 MPa, and the bonding strength of the glued board manufactured after ultrabranching polyamide modified tannin adhesive reaches 0.75MPa
More than, amplification is up to 47.0%, and wet strength is up to 56.0% up to 0.72 more than MPa, amplification.
Embodiment 4
First, in mass ratio 5：100 weigh ultrabranching polyamide powder and acacia mearnsii tannin powder, and water to quality is added after mixing
Concentration is 52%, is stirred, and the pH=8 of glue is adjusted with 30% NaOH solution, is using 3.2% hexamethylenetetramine of preceding addition
Curing agent；Then moisture content is dried the veneers to less than 8%, the g/m of glue-spread 2802, ageing 15min or so, assembly.Hot pressing temperature
It is 140 DEG C to spend, and hot pressing time is 1.2min/mm, and hot pressing pressure is 1.0-1.2MPa.Unmodified tannin adhesive manufacture is glued
Plate dry strength is 0.58MPa, and wet strength is 0.54 MPa, the glued board manufactured after ultrabranching polyamide modified tannin adhesive
Bonding strength reaches more than 0.75MPa, and amplification is up to 29.0%, and wet strength is up to 33.0% up to 0.72 more than MPa, amplification.
Embodiment 5
First, in mass ratio 6：100 weigh aromatic series ultrabranching polyamide powder and Acacia mangiumwilld tannin powder, are added after mixing
Water to mass concentration is 48%, is stirred, and the pH=9 of glue is adjusted with 30% NaOH solution, uses 3.6% 6 first of preceding addition
Urotropine is curing agent；Then moisture content is dried the veneers to less than 8%, the g/m of glue-spread 2802, ageing 15min or so, group
Base.Hot pressing temperature is 140 DEG C, and hot pressing time is 1.2min/mm, and hot pressing pressure is 1.0-1.2MPa.Unmodified tannin adhesive
Manufacture glued board dry strength is 0.49MPa, and wet strength is 0.46 MPa, is manufactured after ultrabranching polyamide modified tannin adhesive
The bonding strength of glued board reaches more than 0.75MPa, and amplification is up to 53.0%, and wet strength is up to up to 0.76 more than MPa, amplification
65.0%。
Embodiment 6
First, in mass ratio 6：50：50 weigh aliphatic and aromatic series ultrabranching polyamide mixture, Baybery tannin and yearning between lovers list
Peaceful powder, wherein aliphatic and aromatic series ultrabranching polyamide mass ratio are 2:3, it is 48% that water to mass concentration is added after mixing,
Stir, the pH=8 of glue is adjusted with 30% NaOH solution, the use of 4.2% paraformaldehyde of preceding addition is curing agent；Then will
Veneer drying to moisture content is less than 8%, the g/m of glue-spread 3002, ageing 15min or so, assembly.Hot pressing temperature is 140 DEG C, heat
The pressure time is 1.2min/mm, and hot pressing pressure is 1.0-1.2MPa.Unmodified tannin adhesive manufactures glued board dry strength
0.61MPa, wet strength is 0.52 MPa, and the bonding strength of the glued board manufactured after ultrabranching polyamide modified tannin adhesive reaches
More than 0.78MPa, amplification is up to 27.0%, and wet strength is up to 40.0% up to 0.73 more than MPa, amplification.
Embodiment 7
First, in mass ratio 5：100 weigh ultrabranching polyamide powder and Baybery tannin, and water to mass concentration is added after mixing
It is 42%, the pH=9 of glue is adjusted with 30% NaOH solution, the use of 3% hexamethylenetetramine of preceding addition is curing agent；Then will be single
Plate drying to moisture content is less than 8%, the g/m of glue-spread 2902, ageing 15min or so, assembly.Hot pressing temperature is 135 DEG C, hot pressing
Time is 1.2min/mm, and hot pressing pressure is 1.0-1.2MPa.Unmodified tannin adhesive manufactures glued board dry strength
0.54MPa, wet strength is 0.46 MPa, and the bonding strength of the glued board manufactured after ultrabranching polyamide modified tannin adhesive reaches
More than 0.85MPa, amplification is up to 57.0%, and wet strength is up to 69.0% up to 0.78 more than MPa, amplification.
Claims (9)
1. a kind of ultrabranching polyamide modified tannin adhesive, its component includes ultrabranching polyamide solid and tannin powder, its
Middle ultrabranching polyamide content is the 1-6%wt of tannin content.
2. ultrabranching polyamide modified tannin adhesive according to claim 1, it is characterised in that：The adhesive makes
With preceding addition water, the glue that solid content is 42-55%wt is tuned into, the pH=6-9 of glue is adjusted with 30% NaOH solution.
3. ultrabranching polyamide modified tannin adhesive according to claim 2, it is characterised in that：The adhesive makes
Modulate uniform with the curing agent of preceding addition glue mass ratio 2-4.5%.
4. ultrabranching polyamide modified tannin adhesive according to claim 1, it is characterised in that：The tannin is from falling
The Condesed tannins and its mixture extracted in Ye Song, red bayberry, acacia mearnsii or Acacia mangiumwilld.
5. the ultrabranching polyamide modified tannin adhesive according to any one of claim 1-4, it is characterised in that：It is described
Ultrabranching polyamide is aliphatic ultrabranching polyamide, aromatic series ultrabranching polyamide or aliphatic and aromatic series mixing over-expense
Change polyamide.
6. ultrabranching polyamide modified tannin adhesive according to claim 3, it is characterised in that：The curing agent is many
Polyformaldehyde, hexamethylenetetramine or trishydroxymethylnitromethane.
7. a kind of ultrabranching polyamide modified tannin adhesive base rubber plywood, is that veneer coats any one of claim 1-6 institutes
Hot pressing is formed after the ultrabranching polyamide modified tannin adhesive stated.
8. the preparation method of the ultrabranching polyamide modified tannin adhesive any one of claim 1-6：Its step bag
Include：
（1）1-6 in mass ratio：100 weigh ultrabranching polyamide solid and tannin powder, and addition water to mass concentration is after mixing
42-55%, is stirred, and the pH=6-9 of glue is adjusted with 30% NaOH solution；
（2）Adhesive adds consolidating for glue mass ratio 2.0-4.5% using preceding in ultrabranching polyamide modified tannin adhesive
Agent, stirs.
9. the ultrabranching polyamide modified tannin adhesive any one of claim 1-6 in glued board is prepared should
With its step includes：
A is dried：Veneer drying to moisture content is less than 8%；
B gluings：Ultrabranching polyamide modified tannin adhesive is coated on veneer, the g/m2 of glue-spread 260, ageing 15min is left
The right side, assembly；
C hot pressing：Hot pressing temperature is 140 DEG C, and hot pressing time is 1.2min/mm, and hot pressing pressure is 1.0-1.2MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710007806.7A CN106753030A (en) | 2017-01-05 | 2017-01-05 | Ultrabranching polyamide modified tannin adhesive and preparation method thereof, glued board and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710007806.7A CN106753030A (en) | 2017-01-05 | 2017-01-05 | Ultrabranching polyamide modified tannin adhesive and preparation method thereof, glued board and its application |
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| CN106753030A true CN106753030A (en) | 2017-05-31 |
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ID=58950842
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| CN201710007806.7A Pending CN106753030A (en) | 2017-01-05 | 2017-01-05 | Ultrabranching polyamide modified tannin adhesive and preparation method thereof, glued board and its application |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393999A (en) * | 2018-03-25 | 2018-08-14 | 南京林业大学 | Tannin base adhesive particieboard and preparation method thereof |
| CN108929652A (en) * | 2018-08-08 | 2018-12-04 | 西南林业大学 | Based Wood Adhesives and preparation method thereof |
| CN109181612A (en) * | 2018-09-14 | 2019-01-11 | 齐鲁工业大学 | A kind of water resistance biology base adhesive and preparation method thereof |
| CN114532261A (en) * | 2022-02-07 | 2022-05-27 | 西双版纳云博水产养殖开发有限公司 | Semi-viscous fish egg debonder and application thereof in artificial propagation of sinocyclocheilus grahami |
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| ZA801583B (en) * | 1979-03-30 | 1981-03-25 | Gen Chemical Corp Ltd | Process for the preparation of adhesive compositions and adhesive compositions prepared thereby |
| CN103242656A (en) * | 2013-05-09 | 2013-08-14 | 北京大学 | Multi-component super-molecular hydrogel and preparation method thereof |
| CN103275668A (en) * | 2013-05-09 | 2013-09-04 | 北京大学 | Application of multi-component super-molecule hydrogel as adhesion agent |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393999A (en) * | 2018-03-25 | 2018-08-14 | 南京林业大学 | Tannin base adhesive particieboard and preparation method thereof |
| CN108929652A (en) * | 2018-08-08 | 2018-12-04 | 西南林业大学 | Based Wood Adhesives and preparation method thereof |
| CN109181612A (en) * | 2018-09-14 | 2019-01-11 | 齐鲁工业大学 | A kind of water resistance biology base adhesive and preparation method thereof |
| CN109181612B (en) * | 2018-09-14 | 2021-02-02 | 齐鲁工业大学 | Water-resistant bio-based adhesive and preparation method thereof |
| CN114532261A (en) * | 2022-02-07 | 2022-05-27 | 西双版纳云博水产养殖开发有限公司 | Semi-viscous fish egg debonder and application thereof in artificial propagation of sinocyclocheilus grahami |
| CN114532261B (en) * | 2022-02-07 | 2022-11-04 | 西双版纳云博水产养殖开发有限公司 | Semi-viscous fish egg debonding agent and application thereof in artificial propagation of sinocyclocheilus grahami |
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