CN109517580A - A kind of preparation method of bamboo liquid-glue original polypeptide composite adhesive - Google Patents
A kind of preparation method of bamboo liquid-glue original polypeptide composite adhesive Download PDFInfo
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- CN109517580A CN109517580A CN201811335106.1A CN201811335106A CN109517580A CN 109517580 A CN109517580 A CN 109517580A CN 201811335106 A CN201811335106 A CN 201811335106A CN 109517580 A CN109517580 A CN 109517580A
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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
- C09J197/00—Adhesives based on lignin-containing materials
- C09J197/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C09J189/00—Adhesives based on proteins; Adhesives based on derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/05—Polymer mixtures characterised by other features containing polymer components which can react with one another
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Abstract
The present patent application discloses a kind of preparation method of bamboo liquid-glue original polypeptide composite adhesive, 1) it by bamboo powder investment lye in reaction kettle the following steps are included: carrying out an alkali thermal degradation reaction, obtaining bamboo liquid；2) leather shavings is added into the bamboo liquid of reaction kettle, carries out secondary shavings alkali thermal degradation reaction, obtains bamboo liquid-glue original mixed degradation liquid；3) bamboo liquid-glue original mixed degradation liquid is subjected to mechanism filter-pressing, collects filtrate；4) it adjusts filtrate pH and crosslinking agent and plasticizer is added, be stirred to react to obtain bamboo liquid-glue original polypeptide composite adhesive.The preparation method of above-mentioned bamboo liquid-glue original polypeptide composite adhesive utilizes biomass resource, low production cost.
Description
Technical field
The invention belongs to based Wood Adhesives technical fields, and in particular to a kind of system of bamboo liquid-glue original polypeptide composite adhesive
Preparation Method.
Background technique
China's based Wood Adhesives usage amount is big, and market prospects are good, and especially market is continuously increased environment-friendly type laminate demand.
In the based Wood Adhesives of the prior art, aldehydes adhesive still accounts for based Wood Adhesives leading position, and the most commonly used is Lauxites, phenolic aldehyde
Resin and melamine formaldehyde resin, although the cost of material of these based Wood Adhesives is lower, wherein volatile formaldehyde
Content is larger, brings potential hazard to people's health, causes environmental pollution.Moreover, the raw material of production aldehydes adhesive comes
From in non-renewable resources such as petroleum, with fossil resource peter out and the enhancing of people's environmental consciousness, research and develop low-methoxyl
The dynamics of aldehyde or formaldehydeless based Wood Adhesives is constantly reinforced.It wherein, is base stock exploitation without aldehyde green ring with biomass
The based Wood Adhesives of guarantor become a big hot spot direction of current wood adhesive exploitation, i.e., are industries without aldehyde biomass adhesive
One of new material.For example, CN108359407A discloses a kind of modified vegetable protein adhesive, by including following parts by weight
Component is prepared: 25~35 parts of the vegetable protein dregs of rice, 0.5~1.5 part of polypropylene fibre of dopamine modification, glycerine three shrinks
2~6 parts of glycerin ether, 65~75 parts of water.CN106753221A discloses a kind of modified vegetable protein adhesive, active constituent packet
Include the vegetable protein dregs of rice, PEI (polyethyleneimine), TA (tannic acid).The starting point of above-mentioned two patent application is all with soybean, cotton
These agricultural product of seed, peanut or sunflower are raw material, are processed into the vegetable protein dregs of rice (powder), with the modified polypropylene fibre of dopamine
Or the mechanical property of TA/PEI enhancing adhesive.But binding force between protein molecular contained by these agricultural product is weak, mechanical property
Can be low, and consumption agricultural product are unrealistic to agriculture area difficult, that food is deficient, and reinforcing agent also increases production cost.
Summary of the invention
Biomass resource, the bamboo liquid-of low production cost are utilized the technical problem to be solved by the invention is to provide a kind of
The preparation method of collagen polypeptide composite adhesive.
Technical solution of the invention is as follows: a kind of preparation method of bamboo liquid-glue original polypeptide composite adhesive, it includes
Following steps:
1) bamboo powder is put into lye in reaction kettle, carries out an alkali thermal degradation reaction, obtains bamboo liquid；
2) leather shavings is added into the bamboo liquid of reaction kettle, carries out secondary shavings alkali thermal degradation reaction, it is former to obtain bamboo liquid-glue
Mixed degradation liquid；
3) bamboo liquid-glue original mixed degradation liquid is subjected to mechanism filter-pressing, collects filtrate；
4) it adjusts filtrate pH and crosslinking agent and plasticizer is added, be stirred to react to obtain bamboo liquid-glue original polypeptide composite adhesive.
Compared with prior art, the present invention having substantive distinguishing features and significant progress following prominent:
The preparation method of a kind of alkaline process bamboo liquid-glue original polypeptide composite adhesive disclosed by the invention, using in hot pressing
Bamboo fibre and polypeptide form graceful Maillard reaction, and supplement crosslinking agent obtains the netted glue of macromolecular, improves bonding force.Adhesive is real
Bonding wood materials can be formed good adhesive strength, mentioned by existing formaldehydeless, non-volatility solvent, the preferable technical effect of water resistance
High adhesive physical chemistry function.
Preferably, the step 1) bamboo powder be then bamboo object is dried by dioxygen water washing, grind it is obtained.Further
Preferably, the weight ratio of bamboo object and hydrogen peroxide is 1: (0.8~1.2) washs 20~40min.Specifically, the processing of the bamboo powder
Mode are as follows: 1) be 3~4 with pH by bamboo object, the dioxygen water washing that mass fraction is 1~3%；2) it dries after washing to water content and is
20~25wt%, being then ground to granularity is 30~50 mesh to get bamboo powder.The present invention using natural bamboo object as Raw material processing at
Bamboo powder can not only reduce the production cost of adhesive, moreover it is possible to bring good environment benefit and economic benefit.
It is further preferred that the bamboo age of the bamboo object is lower than 2 years.Due to the structural constituent phase of the bamboo object lower than 2 Nian Zhuling
Closely, degradation condition is close, so being easy degradation, degradation efficiency is high.
It is further preferred that the bamboo object is dry bamboo, bamboo branch, the leaf of bamboo or bamboo shoot shell.Bamboo does, bamboo branch, the leaf of bamboo or bamboo shoot shell are easy
Acquisition generates a large amount of bamboo object after annual harvesting, applies it in bamboo industry chain, may advantageously facilitate bamboo industry transition and upgrade,
Improve the source development and application of bamboo goods and materials.
Preferably, step 2) the leather shavings is the chrome tanning leather wet blue leather shaving for discarding tannery, deburring, does
It is used after dry, crushing.Specifically, the processing method of the shavings are as follows: 1) by tannery discard chrome tanning leather wet blue leather shaving,
Deburring, dry scrap；2) drying to water content is 20~25wt%, is crushed to length as 2~4mm use.It is discarded using natural
Chrome tanning leather wet blue leather manufacture the adhesive, can not only reduce the production cost of adhesive, moreover it is possible to good environment be brought to imitate
Benefit and economic benefit.
Preferably, the weight ratio of the bamboo powder and leather shavings is 1: (1.5~2.5).
Preferably, the raw material of a degradation reaction of step 1) is composed of the following parts by weight: bamboo powder 100
Part, NaOH5~10 part, 200~250 parts of water.Bamboo powder be then bamboo object is dried by dioxygen water washing, grind it is obtained；Bamboo object
For bamboo is dry, bamboo branch, the leaf of bamboo or bamboo shoot shell.An alkali thermal degradation, an alkali heat drop are first carried out to bamboo powder using NaOH in above-mentioned raw materials
Solution still has excessive lye in bamboo liquid after the reaction was completed, and the alkali thermal degradation reaction of leather shavings can be completed in step 2),
In this way without in addition addition lye, easy to operate, low in cost.Lye can certainly be prepared using KOH, equally can be realized
Degradation.
Preferably, the temperature of a degradation reaction of step 1) is 140~150 DEG C, and pressure is 0.35~0.5MPa, instead
It is 60~90min between seasonable.
Preferably, the temperature of the secondary degradation reaction of the step 2) is 110~120 DEG C, 0.15~0.2MPa of pressure, reaction
Time is 60~120min.
Preferably, filtrate is yellowish-brown transparency liquid in the step 3), and viscosity is 100~150mPas, and solid content is
30~35%.
Preferably, the step 4) reaction temperature is 50~80 DEG C, and the reaction time is 40~80min.
Preferably, the step 4) crosslinking agent is epoxychloropropane.Above-mentioned crosslinking agent is added, it is netted to can get macromolecular
Glue, bonding force are greatly enhanced, and viscosity reaches 200-250mPas, meet the standard requirements of existing based Wood Adhesives.
Preferably, the step 4) plasticizer is glycerol, a kind of in diethylene glycol (DEG), tributyl citrate or any two kinds are mixed
It closes.
Preferably, adjusting liquid pH with 10wt% sulfuric acid in the step 4) is 3.5~5.5.
Preferably, crosslinking agent accounts for the 1.0~2.0% of filtrate weight in the step 4), and plasticizer accounts for the 2.0 of filtrate weight
~4.0%.
Preferably, step 3) the filters pressing device therefor is plate and frame filter press.Plate and frame filter press model BMS4/420-
UB, pressure 6kg.
The present invention have following remarkable advantage and the utility model has the advantages that
1) contain a large amount of plant celluloses (i.e. bamboo fibre) in bamboo object, under alkaline condition using the bamboo powder made of bamboo object
Obtained bamboo liquid of degrading can increase water resistance, bonding force, intensity and the mechanical property of adhesive；And containing a large amount of dynamic in leather
Object albumen degrades to obtain collagen polypeptide using leather shavings, and bamboo powder, leather shavings are degraded in succession and liquefied jointly, bamboo is obtained
Liquid-glue original mixed degradation liquid, graceful Maillard reaction occurs for bamboo fibre and collagen polypeptide in hot pressing degradation process, so that product viscosity mentions
Height, the composite adhered glue synthesized can become the substitute of aldehydes adhesive completely；
2) bamboo powder degradation needs more violent condition, and leather shavings degradation condition is milder, first high temperature and pressure polybase
Condition is degraded bamboo object next time, then puts into shavings in the bamboo liquid degraded to bamboo object, and secondary under conditions of low-temp low-pressure lacks alkali
Degradation shavings, energy and material needed for can saving reaction of being degraded in order according to the two degradation condition and alkali number in this way, and
And the yield of degradation reaction is high, high-efficient；
3) buying NaOH, crosslinking agent, plasticizer are only needed before preparation, raw material type, dosage are few and cheap, and main
Reaction raw materials are using natural abandoned biomass resource, including the discarded chrome tanning of natural or discarded bamboo object and tannery, skin
Leather, wet blue leather, in this way reduction production cost, realize that abandoned biomass regenerated resourcesization utilize, reduce waste discharge, reduce environment
Pollution, meets the requirement of the environmentally protective sustainable development of current era；
4) reaction condition of preparation method is simple, easy to operate to be easy, and only needs mechanism filter-pressing that can remove big portion after degradation
Divide impurity, then adding crosslinking agent can get the netted glue of macromolecular, further increase the viscosity of adhesive；
5) present invention can form good adhesive strength to bonding wood materials, and the standard that viscosity reaches existing based Wood Adhesives is wanted
It asks, there is good water resistance, bonding force, intensity and mechanical property, the physical chemistry function of adhesive can be significantly increased
Energy；And adhesive is prepared, using the effect for realizing formaldehydeless non-volatility solvent.
Specific embodiment
In order to deepen the understanding of the present invention, the present invention is further described below in conjunction with specific embodiment, but not
It limit the invention in any way.
Plurality of raw materials involved in the present invention, wherein bamboo powder is then to dry bamboo object, the system of grinding by dioxygen water washing
?；Leather shavings is will to use after the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, drying, crushing；NaOH, epoxy
Chloropropane, glycerol, diethylene glycol (DEG), tributyl citrate are from market purchasing.
The present invention relates to a variety of instrument and equipments, autoclave, plate and frame filter press, these instrument and equipments are adopted from market
Purchase.
Occur multiple parameters in the present invention, such as partial size, temperature, pressure, time, mass fraction, viscosity, unit (such as mesh,
DEG C, MPa, min, %, mPas) be unified in the upper limit after mark, such as 30~50 mesh, 140~150 DEG C, 0.35~0.5MPa, 60
~90min, 30~35%, 100~150mPas.It is, of course, also possible to using unit is marked after upper limit value and lower limit value, such as
30 mesh~50 mesh, 140 DEG C~150 DEG C, 0.35mPa~0.5MPa, 60min~90min, 30%~35%, 100mPas~
150mPa·s.The expression way of both parameter areas, in embodiment to two upper limit of parameter, lower limit endpoint values
And intermediate value, it all can tape unit after numerical value.
Embodiment 1
1) prepared by bamboo liquid: the bamboo by 100 parts by weight lower than 2 Nian Zhuling does, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell pass through pH for 3, matter
Amount score is 1%, 100 parts by weight dioxygen water washing 30min, then dries, is crushed to 30 mesh, obtains bamboo powder；Weigh following weight
Measure number component: 100 parts of bamboo powder, NaOH5 part, 200 parts of water, investment autoclave, under the conditions of 140 DEG C, 0.35MPa into
Degradation reaction 90min of row, cooling, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 2mm, obtains leather shavings；Take 150 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 110 DEG C, 0.15MPa
Under the conditions of carry out secondary degradation reaction 120min, cool down, obtain bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 100mPas,
Solid content is 33%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate being poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is
3.5,50 DEG C are warming up to, liquid is added and weighs 1.0% epoxychloropropane and 2.0% glycerol, is stirred to react 80min, obtains viscosity
For 200mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 35%.
Embodiment 2
1) prepared by bamboo liquid: by 100 parts by weight, bamboo branch, the leaf of bamboo dry lower than the discarded bamboo of 2 Nian Zhuling and Compositions of Bamboo Shoot Shell are by pH
4, mass fraction 3%, 80 parts by weight dioxygen water washing 30min, then dry, are crushed to 50 mesh, obtain bamboo powder；It weighs as follows
The component of parts by weight: 100 parts of bamboo powder, NaOH10 parts, 250 parts of water, autoclave is put into, under the conditions of 150 DEG C, 0.5MPa
A degradation reaction 90min is carried out, cools down, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 4mm, obtains leather shavings；Take 250 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 120 DEG C, 0.2MPa item
Secondary degradation reaction 60min is carried out under part, is cooled down, is obtained bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 150mPas,
Solid content is 35%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate is poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is 4,
80 DEG C are warming up to, liquid is added and weighs 2.0% epoxychloropropane and 4.0% diethylene glycol (DEG), is stirred to react 80min, obtaining viscosity is
200mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 40%.
Embodiment 3
1) prepared by bamboo liquid: the bamboo by 100 parts by weight lower than 2 Nian Zhuling does, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell pass through pH for 3, matter
Amount score is 2%, 120 parts by weight dioxygen water washing 30min, then dries, is crushed to 40 mesh, obtains bamboo powder；Weigh following weight
Measure number component: 100 parts of bamboo powder, 8 parts of NaOH, 220 parts of water, put into autoclave, under the conditions of 140 DEG C, 0.4MPa into
Degradation reaction 75min of row, cooling, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 3mm, obtains leather shavings；Take 200 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 115 DEG C, 0.18MPa
Under the conditions of carry out secondary degradation reaction 90min, cool down, obtain bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 120mPas,
Solid content is 34%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate being poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is
4.5,60 DEG C are warming up to, liquid is added and weighs 1.5% epoxychloropropane and 3.0% tributyl citrate, is stirred to react 60min,
Acquisition viscosity is 200mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 35%.
Embodiment 4
1) prepared by bamboo liquid: the bamboo by 100 parts by weight lower than 1 Nian Zhuling does, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell pass through pH for 3, matter
Amount score is 3%, 100 parts by weight dioxygen water washing 30min, then dries, is crushed to 35 mesh, obtains bamboo powder；Weigh following weight
Measure number component: 100 parts of bamboo powder, NaOH6 part, 220 parts of water, investment autoclave, under the conditions of 140 DEG C, 0.45MPa into
Degradation reaction 90min of row, cooling, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 2mm, obtains leather shavings；Take 150 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 115 DEG C, 0.18MPa
Under the conditions of carry out secondary degradation reaction 100min, cool down, obtain bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 100mPas,
Solid content is 33%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate being poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is
3.5,60 DEG C are warming up to, liquid is added and weighs 1.0% epoxychloropropane and 2.0% glycerol, is stirred to react 60min, obtains viscosity
For 200mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 35%.
Embodiment 5
1) prepared by bamboo liquid: by 100 parts by weight, bamboo branch, the leaf of bamboo dry lower than the discarded bamboo of 1 Nian Zhuling and Compositions of Bamboo Shoot Shell are by pH
4, mass fraction 2.5%, 80 parts by weight dioxygen water washing 30min, then dry, are crushed to 45 mesh, obtain bamboo powder；It weighs such as
The component of lower parts by weight: 100 parts of bamboo powder, NaOH8 parts, 250 parts of water, autoclave is put into, in 150 DEG C, 0.4MPa condition
Degradation reaction 70min of lower progress, cooling, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 4mm, obtains leather shavings；Take 250 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 115 DEG C, 0.2MPa item
Secondary degradation reaction 90min is carried out under part, is cooled down, is obtained bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 150mPas,
Solid content is 35%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate is poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is 4,
70 DEG C are warming up to, liquid is added and weighs 2.0% epoxychloropropane and 4.0% diethylene glycol (DEG), is stirred to react 70min, obtaining viscosity is
200mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 40%.
Embodiment 6
1) prepared by bamboo liquid: the bamboo by 100 parts by weight lower than 1 Nian Zhuling does, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell pass through pH for 3, matter
Amount score is 2.8%, 120 parts by weight dioxygen water washing 30min, then dries, is crushed to 40 mesh, obtains bamboo powder；It weighs as follows
The component of parts by weight: 100 parts of bamboo powder, 8 parts of KOH, 240 parts of water, autoclave is put into, under the conditions of 140 DEG C, 0.45MPa
A degradation reaction 65min is carried out, cools down, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 3mm, obtains leather shavings；Take 200 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 110 DEG C, 0.2MPa item
Secondary degradation reaction 80min is carried out under part, is cooled down, is obtained bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 120mPas,
Solid content is 34%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate being poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is
4.5, adjusting liquid pH with 10wt% sulfuric acid is 4.5, is warming up to 80 DEG C, and the epoxychloropropane and 3.0% that liquid weighs 1.5% is added
Tributyl citrate is stirred to react 50min, and acquisition viscosity is 200mPas, and the bamboo liquid-glue original polypeptide of solid content 35% is compound
Hot pressing glue.
Embodiment 7
1) prepared by bamboo liquid: by 100 parts by weight bamboos, dry, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell by pH are 3, mass fraction is
2.8%, 100 parts by weight dioxygen water washing 30min, then dries, is crushed to 40 mesh, obtains bamboo powder；Weigh following parts by weight
Component: 100 parts of bamboo powder, 8 parts of NaOH, 240 parts of water, put into autoclave, carry out one under the conditions of 140 DEG C, 0.45MPa
Secondary degradation reaction 65min, cooling, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 3mm, obtains leather shavings；Take 200 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 110 DEG C, 0.2MPa item
Secondary degradation reaction 80min is carried out under part, is cooled down, is obtained bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifies: bamboo liquid and shavings mixed liquor being taken out, filters pressing obtains filtrate；Filtrate is yellowish-brown
Transparency liquid, viscosity 140mPas, solid content 34%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate being poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is
3.5, be warming up to 80 DEG C, be added liquid weigh 1.5% epoxychloropropane, 1.0% glycerol and 1.0% diethylene glycol (DEG), be stirred to react
50min, acquisition viscosity are 235mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 35%.
Embodiment 8
1) prepared by bamboo liquid: the bamboo by 100 parts by weight lower than 2 Nian Zhuling does, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell pass through pH for 3, matter
Amount score is 2.8%, 90 parts by weight dioxygen water washing 30min, then dries, is crushed to 40 mesh, obtains bamboo powder；Weigh following weight
It measures the component of number: 100 parts of bamboo powder, 8 parts of NaOH, 240 parts of water, autoclave is put into, under the conditions of 140 DEG C, 0.45MPa
A degradation reaction 65min is carried out, cools down, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 3mm, obtains leather shavings；Take 200 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 110 DEG C, 0.2MPa item
Secondary degradation reaction 80min is carried out under part, is cooled down, is obtained bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 130mPas,
Solid content is 34%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate being poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is
4.5, be warming up to 80 DEG C, be added liquid weigh 2.0% epoxychloropropane, 1.0% glycerol and 1.0% tributyl citrate, stir
Reaction 50min is mixed, acquisition viscosity is 250mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 35%.
Embodiment 9
1) prepared by bamboo liquid: the bamboo by 100 parts by weight lower than 1 Nian Zhuling does, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell pass through pH for 3, matter
Amount score is 2.8%, 110 parts by weight dioxygen water washing 30min, then dries, is crushed to 40 mesh, obtains bamboo powder；It weighs as follows
The component of parts by weight: 100 parts of bamboo powder, 8 parts of NaOH, 240 parts of water, autoclave is put into, in 140 DEG C, 0.45MPa condition
Degradation reaction 65min of lower progress, cooling, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 3mm, obtains leather shavings；Take 200 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 110 DEG C, 0.2MPa item
Secondary degradation reaction 80min is carried out under part, is cooled down, is obtained bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifying: bamboo liquid and shavings mixed liquor are taken out, and are 6kg with pressure, filter press cloth BMQ3/
The plate and frame filter press filters pressing of 320-250 (500 mesh), obtains filtrate；Filtrate be yellowish-brown transparency liquid, viscosity 145mPas,
Solid content is 34%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate is poured into reaction kettle, adjusting liquid pH with 10wt% sulfuric acid is 4,
Be warming up to 80 DEG C, be added liquid weigh 2% epoxychloropropane, 1.0% tributyl citrate and 1.0% diethylene glycol (DEG), stirring is anti-
50min is answered, acquisition viscosity is 240mPas, the bamboo liquid-glue original polypeptide compound thermal moulding of solid content 35%.
Embodiment 10
1) prepared by bamboo liquid: the bamboo by 100 parts by weight lower than 2 Nian Zhuling does, bamboo branch, the leaf of bamboo and Compositions of Bamboo Shoot Shell pass through pH for 3, matter
Amount score is 1%, 100 parts by weight dioxygen water washing 30min, then dries, is crushed to 30 mesh, obtains bamboo powder；Weigh following weight
It measures the component of number: 100 parts of bamboo powder, NaOH10 parts, 250 parts of water, autoclave is put into, under the conditions of 145 DEG C, 0.45MPa
A degradation reaction 80min is carried out, cools down, obtains bamboo liquid；
2) prepared by mixed degradation liquid: by the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, dry, pulverize to length
Degree is 2mm, obtains leather shavings；Take 200 parts of leather shavingss that the autoclave containing bamboo liquid is added, in 120 DEG C, 0.15MPa
Under the conditions of carry out secondary degradation reaction 120min, cool down, obtain bamboo liquid-glue original mixed degradation liquid；
3) bamboo liquid-glue primary liquid purifies: bamboo liquid and shavings mixed liquor being taken out, adjusting liquid pH with 10wt% sulfuric acid is
3.5, the plate and frame filter press filters pressing that with pressure be 6kg, filter press cloth is BMQ3/320-250 (500 mesh) obtains filtrate；Filtrate is Huang
Amber transparent liquid, viscosity 150mPas, solid content 33%；
4) prepared by bamboo liquid-glue original polypeptide compound adhesive: filtrate being poured into reaction kettle, is warming up to 50 DEG C, liquid is added and weighs 2.0%
Epoxychloropropane and 4.0% glycerol, be stirred to react 80min, acquisition viscosity is 250mPas, the bamboo liquid-glue of solid content 35%
Former polypeptide compound thermal moulding.
Application example
Poplar three-layer-poywood, plate thickness 2mm, two-sided sizing 200g/m are prepared with this adhesive2, pressing plate power 1.2MPa, temperature 120
DEG C, hot pressing time 90min.According to GB/T 14074-2006, " based Wood Adhesives and its resin are examined for the performance test of adhesive
Method " it carries out, reach GB/T 9846-2015 " normal plywood " standard.Adhesive fundamental analysis index such as table 1:
Table 1: adhesive fundamental analysis index
| Appearance | Viscosity/mPas | PH (10 times of dilution) | Solid content/% | Ash content | Dry glue water suction/% for 24 hours |
| Yellowish brown viscous liquid | 200~250 | 8.0~9.0 | 35~40 | 5.1~5.7 | 60~80 |
As can be seen from Table 1, ash content is only 5.1~5.7%, indicates that additional object is seldom.Dry glue absorbs water for 24 hours as 60~
80%, indicate medium hydrophily, hydrophilic expansion after bonding.The standard that viscosity, pH, solid content all reach existing based Wood Adhesives is wanted
It asks, thus bamboo liquid-glue original polypeptide composite adhesive produced by the present invention can replace aldehydes adhesive completely.
Claims (10)
1. a kind of preparation method of bamboo liquid-glue original polypeptide composite adhesive, which is characterized in that it the following steps are included:
1) bamboo powder is put into lye in reaction kettle, carries out an alkali thermal degradation reaction, obtains bamboo liquid；
2) leather shavings is added into the bamboo liquid of reaction kettle, carries out secondary shavings alkali thermal degradation reaction, obtains the mixing of bamboo liquid-glue original
Degradation solution；
3) bamboo liquid-glue original mixed degradation liquid is subjected to mechanism filter-pressing, collects filtrate；
4) it adjusts filtrate pH and crosslinking agent and plasticizer is added, be stirred to react to obtain bamboo liquid-glue original polypeptide composite adhesive.
2. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the bamboo
Powder be then bamboo object is dried by dioxygen water washing, grind it is obtained.
3. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the skin
Leather shavings is will to use after the discarded chrome tanning leather wet blue leather shaving of tannery, deburring, drying, crushing.
4. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the bamboo
The weight ratio of powder and leather shavings is 1: (1.5~2.5).
5. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the step
The raw material of a rapid 1) degradation reaction is composed of the following parts by weight: 100 parts of bamboo powder, NaOH5~10 part, water 200~
250 parts.
6. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the step
The temperature of a rapid 1) degradation reaction is 140~150 DEG C, and pressure is 0.35~0.5MPa, and the reaction time is 60~90min.
7. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the step
The temperature of rapid 2) secondary degradation reaction is 110~120 DEG C, 0.15~0.2MPa of pressure, and the reaction time is 60~120min.
8. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the step
Rapid 4) reaction temperature is 50~80 DEG C, and the reaction time is 40~80min.
9. the preparation method of bamboo liquid-glue original polypeptide composite adhesive described in claim 1, which is characterized in that the step 4)
Middle crosslinking agent is epoxychloropropane, and plasticizer is glycerol, a kind of in diethylene glycol (DEG), tributyl citrate or any two kinds mix.
10. the preparation method of bamboo liquid-glue original polypeptide composite adhesive according to claim 1, which is characterized in that the step
It is 3.5~5.5 that rapid 4) middle use 10wt% sulfuric acid, which adjusts liquid pH, and crosslinking agent accounts for the 1.0~2.0% of filtrate weight, and plasticizer accounts for
The 2.0~4.0% of filtrate weight.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111574955A (en) * | 2020-06-04 | 2020-08-25 | 四川大学 | Bamboo dust catalytic liquefaction composite adhesive and preparation method thereof |
| CN114634792A (en) * | 2022-04-18 | 2022-06-17 | 北京纳威光合科技有限公司 | Flexible package adhesive taking hydrolyzed collagen as basic raw material and preparation method thereof |
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| CN101864090A (en) * | 2009-02-27 | 2010-10-20 | 罗门哈斯公司 | The carbohydrate curable binder composition of polymer modification |
| US20140134909A1 (en) * | 2012-11-13 | 2014-05-15 | Johns Manville | Viscosity modified formaldehyde-free binder compositions |
| CN103917602A (en) * | 2011-09-02 | 2014-07-09 | 克瑙夫绝缘私人有限公司 | Carbohydrate based binder system and method of its production |
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| CN101287788A (en) * | 2005-07-26 | 2008-10-15 | 可耐福保温材料有限公司 | Binders and materials made therewith |
| CN101864090A (en) * | 2009-02-27 | 2010-10-20 | 罗门哈斯公司 | The carbohydrate curable binder composition of polymer modification |
| CN103917602A (en) * | 2011-09-02 | 2014-07-09 | 克瑙夫绝缘私人有限公司 | Carbohydrate based binder system and method of its production |
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| CN111574955A (en) * | 2020-06-04 | 2020-08-25 | 四川大学 | Bamboo dust catalytic liquefaction composite adhesive and preparation method thereof |
| CN111574955B (en) * | 2020-06-04 | 2021-05-14 | 四川大学 | Bamboo dust catalytic liquefaction composite adhesive and preparation method thereof |
| CN114634792A (en) * | 2022-04-18 | 2022-06-17 | 北京纳威光合科技有限公司 | Flexible package adhesive taking hydrolyzed collagen as basic raw material and preparation method thereof |
| CN114634792B (en) * | 2022-04-18 | 2023-09-22 | 北京纳威光合科技有限公司 | Flexible package adhesive taking hydrolyzed collagen as basic raw material and preparation method thereof |
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