CN107459830A - One kind is based on the bionical interface modifier enhancing bamboo fibre of poly-dopamine and poly butylene succinate interface compatibility technology - Google Patents
One kind is based on the bionical interface modifier enhancing bamboo fibre of poly-dopamine and poly butylene succinate interface compatibility technology Download PDFInfo
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- CN107459830A CN107459830A CN201710809176.5A CN201710809176A CN107459830A CN 107459830 A CN107459830 A CN 107459830A CN 201710809176 A CN201710809176 A CN 201710809176A CN 107459830 A CN107459830 A CN 107459830A
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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
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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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
- C08L2203/00—Applications
- C08L2203/30—Applications used for thermoforming
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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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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Abstract
The invention discloses a kind of biomimetic modification bamboo fiber reinforcement poly butylene succinate（PBS）The preparation method of composite, methods described include：1）Screen bamboo fibre to keep below 380 μm of length, then with Dopamine hydrochloride solution immersion treatment；2）After to immersion trishydroxymethylaminomethane is added in mixed system（Tris）Regulation PH is in alkalescent, normal temperature and pressure stirring, filters and be dried to obtain the poly-dopamine modified lithium bamboo fibre that moisture is less than 1%；3）Modified bamboo fibre is kept into mass ratio 1 with PBS pellets:1 is well mixed in high speed mixer, is subsequently poured into double screw extruder and is granulated, and composition granule compression molding in hot press will then be blended, the Temperature fall in cold press, obtains being modified bamboo fibre/PBS composites after the demoulding afterwards.The method according to the invention, dopamine have biocompatibility, small to fiber destruction, and modifying process does not need complicated container, and production method is easy, safety and environmental protection, significantly improves the mechanical property of composite.
Description
Technical field
It is more particularly to a kind of to use poly-dopamine to increase as modifying agent the present invention relates to high-molecular biologic modifying agent field
The technology of strong interface compatibility between bamboo fibre and plastics.
Background technology
The shellfish attachment proteins of seashells secretion has superpower adhesive capacity, can be allowed to be firmly attached to reef,
The various solid substrate surfaces such as hull, even experience all sorts of seawater scouring and also do not fall off.3,4- dihydroxyphenylalanines（DOPA）It is
The main component of shellfish attachment proteins, while be also the amino acid that a kind of side base is catechu phenol functional group.Catechu phenol functional group has
There is the multi-functional and close diversity of chemistry, enhance the bonding force and cohesive force between shellfish attachment proteins and base material, be shellfish
The major function member of attachment proteins.
Poly butylene succinate is a kind of biodegradable polymer of industrial applications.The polybutadiene of single component
There is the problems such as poor mechanical property in sour butanediol ester, seriously constrain its extensive use in the industry in use.For
Improve this problem, it is the most frequently used method to prepare fibre reinforced composites, and conventional fiber includes organic fiber and inorganic fibre
Dimension.Lifang Liu etc. prepare composite using tossa enhancing poly butylene succinate.Result of study shows compound
The mechanical strength of material, which has, to be obviously improved, and when fiber content is 20%, composite has optimal mechanical strength and mould
Amount.Yihe Zhang etc. prepare basalt fibre/poly butylene succinate composite, and result of study shows, with fiber
The increase of load capacity, the stretching of material and bending property significantly improve.Jicai Liang etc. use carbon fiber and poly-succinic fourth
Diol ester prepares composite, finds that every mechanical property of composite is all greatly improved after research.Make a general survey of state
The inside and outside research on fibre reinforced composites, the research on bamboo fibre is few, and bamboo fibre is natural product, nothing
Poison is harmless, can be degradable in natural environment, has very high researching value.
Due to substantial amounts of hydroxyl be present in cellulose and hemicellulose, so the surface of bamboo generally has very strong pole
Property, it is hydrophilic, and the surface of plastics is nonpolar, hydrophobic.Preparing bamboo fibre/poly butylene succinate composite
When the problem of often running into interface poor compatibility between the two, poor interface compatibility constrains application and the hair of composite
Exhibition, solve interface compatibility poor between bamboo fibre and plastics with obtain the degradable biological composite material of function admirable into
For the focus studied both at home and abroad.
The problem of to improve interface compatibility difference between bamboo fibre and poly butylene succinate, related researcher is main
It has studied by different interface modifiers to improve the compatibility at interface between the two, strengthen the properties of composite, it is existing
The method of modifying that stage mainly uses includes alkali process, and acetylation process, adds silane coupler and addition maleic anhydride connects
Branch modification.Although these methods enhance the interface compatibility between bamboo fibre and poly butylene succinate, but break
The structure of bamboo fibre itself is broken, meanwhile, certain waste liquid can be produced after these auxiliary agent uses, causes the destruction of environment.Therefore,
It is extremely urgent to find a kind of nontoxic, biodegradable modifying agent.
Inspired by shellfish attachment proteins adhesion principles, can use it to be modified bamboo fibre, so as to strengthen bamboo fibre
Bond strength between peacekeeping poly butylene succinate.But if shellfish attachment proteins is extracted directly from shellfish, then not
Only operating difficulties and cost is very high, without feasibility, researcher by studying the structure of shellfish attachment proteins,
The biomimetic modification agent poly-dopamine that there is same functional unit with it is synthesized.It is more that Song etc. prepares one kind using dopamine
The nitrogen-doped graphene aeroge of function, find that by the graphene oxide of poly-dopamine cladding graphene film can be increased after research
Dispersiveness, and the assembling for its 3D structure provides framework.Zhong Wang etc. using dopamine improve montmorillonite with
The interface compatibility of soybean protein film, and add by the chelation of catechol group and iron ion the crosslinking of polymer
Property, obtain the separation soybean protein film with very strong water resistance, heat endurance and mechanical performance.On fiber-reinforced composite material
Expect, the catechu phenol functional group in dopamine can react to form hydrogen bond with the free hydroxyl of fiber surface, and polymeric matrix is by C-H chains
Covering, gather so as to enhance the adhesion between Fiber In Composite Material and plastic matrix interface, Alain Bourmaud etc. and utilize
Dopamine is as modifying agent, to increase the bond strength between hemp/PLLA composite material interface, through poly-dopamine modified lithium
Afterwards, the mechanical property such as tensile strength of composite is all remarkably reinforced, illustrate poly-dopamine use add hemp and
The interface bond strength of PLLA, plays a part of increase-volume.Chuang Luo etc. improve galapectite using poly-dopamine
Compatibility between nanotube and PLLA interface, the excellent halloysite nanotubes/PLLA of processability
Composite.The every mechanical property and cell compatibility that modified composite is found after research are all lifted.Junya Yuan
Deng interface compatibility poor between poly-dopamine reinforced TFE fabric fibre and phenolic resin matrix is utilized, so as to prepare
The composite of excellent performance.Obtained composite and unmodified obtained composite phase behind poly-dopamine modified lithium interface
Than its interface bond strength is obviously improved.
The content of the invention
The problem of based on described in background of invention technology, the present invention is proposed using poly-dopamine as interface modifier, right
Bamboo fibre surface is modified, and reduces the polarity of fiber surface, to strengthen between bamboo fibre and poly butylene succinate interface
Compatibility, produce it is a kind of there is premium properties, without noxious material, biodegradable composite.
One kind proposed by the present invention uses poly-dopamine to strengthen bamboo fibre and poly-succinic acid-butanediol as interface modifier
The technique for applying of compatibility between ester interface, its specific steps mainly include：Modification of the poly-dopamine to bamboo powder, and bamboo powder/poly-
The compression molding of succinic acid-butanediol ester composite.Its optimum process key parameter is that the concentration of poly-dopamine modified lithium bamboo powder is
1.0mg/mL, polymerization pH value are 8.5.It is 50% to prepare the bamboo powder of composite and the mass percent of poly butylene succinate：
50%, hot pressing temperature is 145 DEG C, hot pressing pressure 4MPa, and temperature of colding pressing is 20 DEG C, hot pressing pressure 4MPa.
Beneficial effect of the present invention
Bamboo-plastic composite material is cheap, reusable, good stability of the dimension, intensity and hardness height, antiseptic insect-repelling etc.
Advantage.Development bamboo-plastic composite material can not only realize wood substituted by bamboo, give full play to the advantage of China's bamboo timber resource, alleviate China
The nervous situation of timber shortage, can also recycle plastics, improve the utilization rate of waste or used plastics, efficiently solve " white dirt
Dye " problem, improves the ecological environment.
Because interface compatibility poor between bamboo fibre and plastics constrains the application and development of bamboo-plastic composite material, tradition
It has been out of question for the environmental pollution caused by noxious material release in the modifying agent of interface compatibility between reinforcing fiber and plastics
The fact.For the present invention using poly-dopamine as modifying agent, nontoxic pollution-free can be degradable in nature, reduces back
Harvest sheet and difficulty, meet feature and the requirement of environmentally friendly material.
Brief description of the drawings
Fig. 1 is the manufacturing process that poly-dopamine modified lithium bamboo fibre prepares composite.
Embodiment
The present invention is modified using poly-dopamine as interface modifier to bamboo fibre surface, enhancing bamboo fibre and poly- fourth
Compatibility between succinate adipate interface, the excellent degradable biological composite of processability, the manufacturing step being related to are shown in
Accompanying drawing 1.
Embodiment 1
（1）Test material.
Bamboo fibre, combination grain are 40-60 mesh, and fibre length is less than 380 μm, purchases and Anhui Sen Tai wood mouldings group share
Co., Ltd；Poly butylene succinate（PBS）, flow index 2.0g/10 min, percent crvstallinity 32%, density
1.24g/cm3, it is purchased from Shanghai Zhaohe High Molecule Co., Ltd.；Dopamine hydrochloride (98.5%) and three（Methylol）Methylamino first
Alkane (99.9%), is purchased from Beijing Suo Laibao Science and Technology Ltd；Hydrochloric acid, solid paraffin and deionized water, it is purchased from Beijing Chinese medicines group
Chemical reagent Beijing Co., Ltd.All material is not further purified when in use.
（2）Testing equipment.
DLZ-6510 type vacuum drying chambers, Shanghai Dong Lu experimental instruments and equipment limiteds；The type laboratory blenders of HJB-S 450
Machine, Shanghai favour are mechanical ＆ electronic equipment corporation, Ltd；SHR-A type high speed mixers, Zhangjagang City lead to sand sculpture material Machinery Co., Ltd.；
SJSH30 type double screw extruders, Nanjing Rubber-Plastic Machinery Plant；Low speed pulverizer, Ai Weien Shanghai Machinery Co., Ltd.；SYSMEN-
II types intelligent control tests press, and China Forestry Science Research Institute's timber industry is supervised；QD type hot presses, the gloomy machinery of Qingdao state
Co., Ltd；The omnipotent test machine for mechanism of CMT5504 types, this beautiful secret service industry System Co., Ltd；QUANTA200 type scanning electrons
Microscope, Dutch PHILIPS Co..
（3）Modification of the poly-dopamine to bamboo fibre.
Bamboo fibre is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C first, and being added to concentration after dried is
In 0.5mg/mL dopamine hydrochloride solution, by three（Methylol）Aminomethane solution is added in mixed solution, will be mixed
The pH value of solution is adjusted to 8.5.Then, by mixed solution with 300r/min speed high-speed stirred 48 hours at room temperature,
It is observed that after dopamine auto polymerization, the color of mixed solution is changed into dark-brown from colourless.After stirring terminates, pass through suction filtration
Bamboo fibre after being handled, the uncoated poly-dopamine on bamboo fibre is gone with the washing of distillation, washed for several times until molten
Untill liquid becomes clarification.Finally, the bamboo fibre obtained after washing is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C, obtained
To the bamboo fibre after poly-dopamine modified lithium is handled.
（4）The preparation of bamboo fibre/poly butylene succinate composite.
The poly butylene succinate that bamboo fibre and mass fraction that mass fraction is 50% are 50% is added into speed is
Mixed 5 minutes in 2900rpm high speed mixer.Then mixture is dried 2 hours in 103 DEG C of vacuum drying chamber, done
Dry good mixture by double screw extruder melt compound, and temperature curve is 135/140/145/145/135 DEG C, screw rod
Rotating speed is 180rpm；After material cooling a diameter of 2mm little particles, the little particle after processing are broken into low speed pulverizer
2 small rear progress are dried in 103 DEG C of vacuum drying chamber by hand to mat formation, and then carry out hot pressing using intelligent control experiment press,
Hot pressing temperature is 145 DEG C, hot pressing pressure 4MPa, duration 6min.Hot pressing terminates afterwards rapidly to take molded slab
Under, progress normal temperature cold pressing on hot press is put into, temperature of colding pressing is 20 DEG C, pressure 4MPa, duration 6min, and cold pressing is completed
Bamboo powder/poly butylene succinate composite is can obtain afterwards, the density of composite is 1.28 g/cm3, and size is
270×270×4 mm3.Finally, according to associated test standards, test specimen is cut into required size.
（5）Test result.
Compared with composite prepared by the bamboo fibre treated without poly-dopamine, through the DOPA that concentration is 0.5mg/mL
Composite prepared by the treated bamboo fibre of amide hydrochloride, its bending strength improve 20.3%, and bending modulus improves
18.5%, tensile strength improves 37.1%, and stretch modulus improves 13.3%, and impact strength improves 42.4%.
Embodiment 2
（1）Test material.
Bamboo fibre, combination grain are 40-60 mesh, and fibre length is less than 380 μm, purchases and Anhui Sen Tai wood mouldings group share
Co., Ltd；Poly butylene succinate（PBS）, flow index 2.0g/10 min, percent crvstallinity 32%, density
1.24g/cm3, it is purchased from Shanghai Zhaohe High Molecule Co., Ltd.；Dopamine hydrochloride (98.5%) and three（Methylol）Methylamino first
Alkane (99.9%), is purchased from Beijing Suo Laibao Science and Technology Ltd；Hydrochloric acid, solid paraffin and deionized water, it is purchased from Beijing Chinese medicines group
Chemical reagent Beijing Co., Ltd.All material is not further purified when in use.
（2）Testing equipment.
DLZ-6510 type vacuum drying chambers, Shanghai Dong Lu experimental instruments and equipment limiteds；The type laboratory blenders of HJB-S 450
Machine, Shanghai favour are mechanical ＆ electronic equipment corporation, Ltd；SHR-A type high speed mixers, Zhangjagang City lead to sand sculpture material Machinery Co., Ltd.；
SJSH30 type double screw extruders, Nanjing Rubber-Plastic Machinery Plant；Low speed pulverizer, Ai Weien Shanghai Machinery Co., Ltd.；SYSMEN-
II types intelligent control tests press, and China Forestry Science Research Institute's timber industry is supervised；QD type hot presses, the gloomy machinery of Qingdao state
Co., Ltd；The omnipotent test machine for mechanism of CMT5504 types, this beautiful secret service industry System Co., Ltd；QUANTA200 type scanning electrons
Microscope, Dutch PHILIPS Co..
（3）Modification of the poly-dopamine to bamboo fibre.
Bamboo fibre is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C first, and being added to concentration after dried is
In 1.0mg/mL dopamine hydrochloride solution, by three（Methylol）Aminomethane solution is added in mixed solution, will be mixed
The pH value of solution is adjusted to 8.5.Then, by mixed solution with 300r/min speed high-speed stirred 48 hours at room temperature,
It is observed that after dopamine auto polymerization, the color of mixed solution is changed into dark-brown from colourless.After stirring terminates, pass through suction filtration
Bamboo fibre after being handled, the uncoated poly-dopamine on bamboo fibre is gone with the washing of distillation, washed for several times until molten
Untill liquid becomes clarification.Finally, the bamboo fibre obtained after washing is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C, obtained
To the bamboo fibre after poly-dopamine modified lithium is handled.
（4）The preparation of bamboo fibre/poly butylene succinate composite.
The poly butylene succinate that bamboo fibre and mass fraction that mass fraction is 50% are 50% is added into speed is
Mixed 5 minutes in 2900rpm high speed mixer.Then mixture is dried 2 hours in 103 DEG C of vacuum drying chamber, done
Dry good mixture by double screw extruder melt compound, and temperature curve is 135/140/145/145/135 DEG C, screw rod
Rotating speed is 180rpm；After material cooling a diameter of 2mm little particles, the little particle after processing are broken into low speed pulverizer
2 small rear progress are dried in 103 DEG C of vacuum drying chamber by hand to mat formation, and then carry out hot pressing using intelligent control experiment press,
Hot pressing temperature is 145 DEG C, hot pressing pressure 4MPa, duration 6min.Hot pressing terminates afterwards rapidly to take molded slab
Under, progress normal temperature cold pressing on hot press is put into, temperature of colding pressing is 20 DEG C, pressure 4MPa, duration 6min, and cold pressing is completed
Bamboo powder/poly butylene succinate composite is can obtain afterwards, the density of composite is 1.28 g/cm3, and size is
270×270×4 mm3.Finally, according to associated test standards, test specimen is cut into required size.
（5）Test result.
Compared with composite prepared by the bamboo fibre treated without poly-dopamine, through the DOPA that concentration is 1.0mg/mL
Composite prepared by the treated bamboo fibre of amide hydrochloride, its bending strength improve 34.3%, and bending modulus improves
23.4%, tensile strength improves 65.5%, and stretch modulus improves 41.3%, and impact strength improves 63.4%.
Embodiment 3
（1）Test material.
Bamboo fibre, combination grain are 40-60 mesh, and fibre length is less than 380 μm, purchases and Anhui Sen Tai wood mouldings group share
Co., Ltd；Poly butylene succinate（PBS）, flow index 2.0g/10 min, percent crvstallinity 32%, density
1.24g/cm3, it is purchased from Shanghai Zhaohe High Molecule Co., Ltd.；Dopamine hydrochloride (98.5%) and three（Methylol）Methylamino first
Alkane (99.9%), is purchased from Beijing Suo Laibao Science and Technology Ltd；Hydrochloric acid, solid paraffin and deionized water, it is purchased from Beijing Chinese medicines group
Chemical reagent Beijing Co., Ltd.All material is not further purified when in use.
（2）Testing equipment.
DLZ-6510 type vacuum drying chambers, Shanghai Dong Lu experimental instruments and equipment limiteds；The type laboratory blenders of HJB-S 450
Machine, Shanghai favour are mechanical ＆ electronic equipment corporation, Ltd；SHR-A type high speed mixers, Zhangjagang City lead to sand sculpture material Machinery Co., Ltd.；
SJSH30 type double screw extruders, Nanjing Rubber-Plastic Machinery Plant；Low speed pulverizer, Ai Weien Shanghai Machinery Co., Ltd.；SYSMEN-
II types intelligent control tests press, and China Forestry Science Research Institute's timber industry is supervised；QD type hot presses, the gloomy machinery of Qingdao state
Co., Ltd；The omnipotent test machine for mechanism of CMT5504 types, this beautiful secret service industry System Co., Ltd；QUANTA200 type scanning electrons
Microscope, Dutch PHILIPS Co..
（3）Modification of the poly-dopamine to bamboo fibre.
Bamboo fibre is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C first, and being added to concentration after dried is
In 1.5mg/mL dopamine hydrochloride solution, by three（Methylol）Aminomethane solution is added in mixed solution, will be mixed
The pH value of solution is adjusted to 8.5.Then, by mixed solution with 300r/min speed high-speed stirred 48 hours at room temperature,
It is observed that after dopamine auto polymerization, the color of mixed solution is changed into dark-brown from colourless.After stirring terminates, pass through suction filtration
Bamboo fibre after being handled, the uncoated poly-dopamine on bamboo fibre is gone with the washing of distillation, washed for several times until molten
Untill liquid becomes clarification.Finally, the bamboo fibre obtained after washing is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C, obtained
To the bamboo fibre after poly-dopamine modified lithium is handled.
（4）The preparation of bamboo fibre/poly butylene succinate composite.
The poly butylene succinate that bamboo fibre and mass fraction that mass fraction is 50% are 50% is added into speed is
Mixed 5 minutes in 2900rpm high speed mixer.Then mixture is dried 2 hours in 103 DEG C of vacuum drying chamber, done
Dry good mixture by double screw extruder melt compound, and temperature curve is 135/140/145/145/135 DEG C, screw rod
Rotating speed is 180rpm；After material cooling a diameter of 2mm little particles, the little particle after processing are broken into low speed pulverizer
2 small rear progress are dried in 103 DEG C of vacuum drying chamber by hand to mat formation, and then carry out hot pressing using intelligent control experiment press,
Hot pressing temperature is 145 DEG C, hot pressing pressure 4MPa, duration 6min.Hot pressing terminates afterwards rapidly to take molded slab
Under, progress normal temperature cold pressing on hot press is put into, temperature of colding pressing is 20 DEG C, pressure 4MPa, duration 6min, and cold pressing is completed
Bamboo powder/poly butylene succinate composite is can obtain afterwards, the density of composite is 1.28 g/cm3, and size is
270×270×4 mm3.Finally, according to associated test standards, test specimen is cut into required size.
（5）Test result.
Compared with composite prepared by the bamboo fibre treated without poly-dopamine, through the DOPA that concentration is 1.5mg/mL
Composite prepared by the treated bamboo fibre of amide hydrochloride, its bending strength improve 23.9%, and bending modulus improves
16.1%, tensile strength improves 50.2%, and stretch modulus improves 37.3%, and impact strength improves 49.6%.
Embodiment 4
（1）Test material.
Bamboo fibre, combination grain are 40-60 mesh, and fibre length is less than 380 μm, purchases and Anhui Sen Tai wood mouldings group share
Co., Ltd；Poly butylene succinate（PBS）, flow index 2.0g/10 min, percent crvstallinity 32%, density
1.24g/cm3, it is purchased from Shanghai Zhaohe High Molecule Co., Ltd.；Dopamine hydrochloride (98.5%) and three（Methylol）Methylamino first
Alkane (99.9%), is purchased from Beijing Suo Laibao Science and Technology Ltd；Hydrochloric acid, solid paraffin and deionized water, it is purchased from Beijing Chinese medicines group
Chemical reagent Beijing Co., Ltd.All material is not further purified when in use.
（2）Testing equipment.
DLZ-6510 type vacuum drying chambers, Shanghai Dong Lu experimental instruments and equipment limiteds；The type laboratory blenders of HJB-S 450
Machine, Shanghai favour are mechanical ＆ electronic equipment corporation, Ltd；SHR-A type high speed mixers, Zhangjagang City lead to sand sculpture material Machinery Co., Ltd.；
SJSH30 type double screw extruders, Nanjing Rubber-Plastic Machinery Plant；Low speed pulverizer, Ai Weien Shanghai Machinery Co., Ltd.；SYSMEN-
II types intelligent control tests press, and China Forestry Science Research Institute's timber industry is supervised；QD type hot presses, the gloomy machinery of Qingdao state
Co., Ltd；The omnipotent test machine for mechanism of CMT5504 types, this beautiful secret service industry System Co., Ltd；QUANTA200 type scanning electrons
Microscope, Dutch PHILIPS Co..
（3）Modification of the poly-dopamine to bamboo fibre.
Bamboo fibre is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C first, and being added to concentration after dried is
In 2.0mg/mL dopamine hydrochloride solution, by three（Methylol）Aminomethane solution is added in mixed solution, will be mixed
The pH value of solution is adjusted to 8.5.Then, by mixed solution with 300r/min speed high-speed stirred 48 hours at room temperature,
It is observed that after dopamine auto polymerization, the color of mixed solution is changed into dark-brown from colourless.After stirring terminates, pass through suction filtration
Bamboo fibre after being handled, the uncoated poly-dopamine on bamboo fibre is gone with the washing of distillation, washed for several times until molten
Untill liquid becomes clarification.Finally, the bamboo fibre obtained after washing is dried 48 hours in the vacuum drying chamber that temperature is 80 DEG C, obtained
To the bamboo fibre after poly-dopamine modified lithium is handled.
（4）The preparation of bamboo fibre/poly butylene succinate composite.
The poly butylene succinate that bamboo fibre and mass fraction that mass fraction is 50% are 50% is added into speed is
Mixed 5 minutes in 2900rpm high speed mixer.Then mixture is dried 2 hours in 103 DEG C of vacuum drying chamber, done
Dry good mixture by double screw extruder melt compound, and temperature curve is 135/140/145/145/135 DEG C, screw rod
Rotating speed is 180rpm；After material cooling a diameter of 2mm little particles, the little particle after processing are broken into low speed pulverizer
2 small rear progress are dried in 103 DEG C of vacuum drying chamber by hand to mat formation, and then carry out hot pressing using intelligent control experiment press,
Hot pressing temperature is 145 DEG C, hot pressing pressure 4MPa, duration 6min.Hot pressing terminates afterwards rapidly to take molded slab
Under, progress normal temperature cold pressing on hot press is put into, temperature of colding pressing is 20 DEG C, pressure 4MPa, duration 6min, and cold pressing is completed
Bamboo powder/poly butylene succinate composite is can obtain afterwards, the density of composite is 1.28 g/cm3, and size is
270×270×4 mm3.Finally, according to associated test standards, test specimen is cut into required size.
（5）Test result.
Compared with composite prepared by the bamboo fibre treated without poly-dopamine, through the DOPA that concentration is 2.0mg/mL
Composite prepared by the treated bamboo fibre of amide hydrochloride, its bending strength improve 12.4%, and bending modulus improves
13.7%, tensile strength improves 41.9%, and stretch modulus improves 26.7%, and impact strength improves 39.0%.
It is those skilled in the art known technology in addition to technical characteristic described in specification.
Claims (3)
1. preparing composite using poly-dopamine modified lithium bamboo fibre, it includes the method for modifying and preparation technology parameter of material.
2. poly-dopamine modified lithium bamboo fibre prepares the method for modifying of composite according to claim 1, it is characterised in that：With
Poly-dopamine carries out surface modification to bamboo fibre, modified bamboo fibre passes through heat with poly butylene succinate as modifying agent
The process of composite is made in pressure and cold-press process.
3. poly-dopamine modified lithium bamboo fibre prepares the preparation technology parameter of composite according to claim 1, its feature exists
In：Dopamine hydrochloride solution concentration, hot pressing temperature, hot pressing time, hot pressing pressure, bamboo fibre dosage, poly-succinic acid-butanediol
Ester dosage.
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| CN201710809176.5A CN107459830A (en) | 2017-09-10 | 2017-09-10 | One kind is based on the bionical interface modifier enhancing bamboo fibre of poly-dopamine and poly butylene succinate interface compatibility technology |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108060575A (en) * | 2018-02-02 | 2018-05-22 | 山西农业大学 | A kind of surface-functionalized method of modifying of natural plant fibre |
| CN108486888A (en) * | 2018-04-08 | 2018-09-04 | 北京化工大学 | A kind of surface biomimetic method of modifying of High performance polyimide fibres and application |
| CN109732733A (en) * | 2019-01-23 | 2019-05-10 | 湖南桃花江竹材科技股份有限公司 | Integratively formed bamboo sleeper and preparation method thereof |
| CN109747008A (en) * | 2019-01-23 | 2019-05-14 | 湖南桃花江竹材科技股份有限公司 | A kind of bamboo sleeper of assembled formation and preparation method thereof |
| CN110105781A (en) * | 2019-04-26 | 2019-08-09 | 北京林业大学 | One kind enhancing bamboo powder/polyethylene interface compatibility technology based on the bionical interface modification of polyacrylamide base dopamine |
| CN111663324A (en) * | 2020-05-07 | 2020-09-15 | 安徽绿之态新材料有限公司 | Modified plant fiber and wear-resistant tableware containing same |
| CN111773933A (en) * | 2020-06-28 | 2020-10-16 | 健帆生物科技集团股份有限公司 | Polylactic acid dialysis membrane, preparation method thereof and dialyzer |
| CN112048150A (en) * | 2019-06-06 | 2020-12-08 | 广西大学 | Carbon fiber cloth and fibrilia cloth reinforced unsaturated resin material and preparation method thereof |
| CN112940467A (en) * | 2021-03-16 | 2021-06-11 | 晋江市新迪新材料科技有限公司 | Preparation method of bamboo-based fiber reinforced full-biodegradable composite material |
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| CN113085319A (en) * | 2021-03-16 | 2021-07-09 | 晋江市新迪新材料科技有限公司 | Full-biodegradable composite material for tableware and tableware using same |
| CN114045042A (en) * | 2021-11-22 | 2022-02-15 | 益阳桃花江竹业发展有限公司 | Bamboo-plastic composite material for container bottom plate and preparation method thereof |
| CN114571552A (en) * | 2022-03-09 | 2022-06-03 | 阜南佳利工艺品股份有限公司 | Bamboo gluing forming process for improving gluing strength of bamboo |
| CN114703668A (en) * | 2022-04-28 | 2022-07-05 | 东莞职业技术学院 | Fiber and preparation method and application thereof |
| CN114836018A (en) * | 2022-06-20 | 2022-08-02 | 深圳市博彩新材料科技有限公司 | Pearlescent PC color master batch with reinforcing and toughening effects and preparation method thereof |
| CN115179380A (en) * | 2022-07-15 | 2022-10-14 | 浙江农林大学 | Preparation method of emerald green mildew-resistant anti-cracking round bamboo |
| CN115247307A (en) * | 2022-08-29 | 2022-10-28 | 安徽东锦服饰有限公司 | Preparation method of breathable blended fabric |
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| CN116476498A (en) * | 2023-04-24 | 2023-07-25 | 苏州大学 | Biodegradable silk/jute reinforced PBS composite material and preparation method thereof |
| CN117624853A (en) * | 2024-01-23 | 2024-03-01 | 天津永续新材料有限公司 | Bamboo powder modified polylactic acid-based biodegradable composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108060575A (en) * | 2018-02-02 | 2018-05-22 | 山西农业大学 | A kind of surface-functionalized method of modifying of natural plant fibre |
| CN108486888A (en) * | 2018-04-08 | 2018-09-04 | 北京化工大学 | A kind of surface biomimetic method of modifying of High performance polyimide fibres and application |
| EP3904029A4 (en) * | 2019-01-23 | 2022-03-02 | Hunan Taohuajiang Bamboo Science & Technology Co., Ltd. | Bamboo railroad sleeper integrally formed by means of one-step molding, and preparation method thereof |
| CN109732733A (en) * | 2019-01-23 | 2019-05-10 | 湖南桃花江竹材科技股份有限公司 | Integratively formed bamboo sleeper and preparation method thereof |
| CN109747008A (en) * | 2019-01-23 | 2019-05-14 | 湖南桃花江竹材科技股份有限公司 | A kind of bamboo sleeper of assembled formation and preparation method thereof |
| EP3904027A4 (en) * | 2019-01-23 | 2022-03-09 | Hunan Taohuajiang Bamboo Science & Technology Co., Ltd. | Assembled bamboo sleeper and preparation method therefor |
| CN110105781A (en) * | 2019-04-26 | 2019-08-09 | 北京林业大学 | One kind enhancing bamboo powder/polyethylene interface compatibility technology based on the bionical interface modification of polyacrylamide base dopamine |
| CN112048150A (en) * | 2019-06-06 | 2020-12-08 | 广西大学 | Carbon fiber cloth and fibrilia cloth reinforced unsaturated resin material and preparation method thereof |
| CN111663324A (en) * | 2020-05-07 | 2020-09-15 | 安徽绿之态新材料有限公司 | Modified plant fiber and wear-resistant tableware containing same |
| CN111773933A (en) * | 2020-06-28 | 2020-10-16 | 健帆生物科技集团股份有限公司 | Polylactic acid dialysis membrane, preparation method thereof and dialyzer |
| CN111773933B (en) * | 2020-06-28 | 2022-06-24 | 健帆生物科技集团股份有限公司 | Polylactic acid dialysis membrane, preparation method thereof and dialyzer |
| CN112940467A (en) * | 2021-03-16 | 2021-06-11 | 晋江市新迪新材料科技有限公司 | Preparation method of bamboo-based fiber reinforced full-biodegradable composite material |
| CN112980158A (en) * | 2021-03-16 | 2021-06-18 | 晋江市新迪新材料科技有限公司 | Bamboo-based fiber reinforced full-biodegradable composite material |
| CN113085319A (en) * | 2021-03-16 | 2021-07-09 | 晋江市新迪新材料科技有限公司 | Full-biodegradable composite material for tableware and tableware using same |
| CN114045042A (en) * | 2021-11-22 | 2022-02-15 | 益阳桃花江竹业发展有限公司 | Bamboo-plastic composite material for container bottom plate and preparation method thereof |
| CN114045042B (en) * | 2021-11-22 | 2022-11-25 | 益阳桃花江竹业发展有限公司 | Bamboo-plastic composite material for container bottom plate and preparation method thereof |
| CN114571552A (en) * | 2022-03-09 | 2022-06-03 | 阜南佳利工艺品股份有限公司 | Bamboo gluing forming process for improving gluing strength of bamboo |
| CN114571552B (en) * | 2022-03-09 | 2023-01-24 | 阜南佳利工艺品股份有限公司 | Bamboo gluing forming process for improving bamboo gluing strength |
| CN114703668A (en) * | 2022-04-28 | 2022-07-05 | 东莞职业技术学院 | Fiber and preparation method and application thereof |
| CN114703668B (en) * | 2022-04-28 | 2023-09-19 | 东莞职业技术学院 | Fiber and preparation method and application thereof |
| CN114836018A (en) * | 2022-06-20 | 2022-08-02 | 深圳市博彩新材料科技有限公司 | Pearlescent PC color master batch with reinforcing and toughening effects and preparation method thereof |
| CN115179380A (en) * | 2022-07-15 | 2022-10-14 | 浙江农林大学 | Preparation method of emerald green mildew-resistant anti-cracking round bamboo |
| CN115179380B (en) * | 2022-07-15 | 2023-09-12 | 浙江农林大学 | Preparation method of emerald green mildew-resistant and crack-resistant round bamboo |
| CN115247307A (en) * | 2022-08-29 | 2022-10-28 | 安徽东锦服饰有限公司 | Preparation method of breathable blended fabric |
| CN116200015A (en) * | 2023-03-09 | 2023-06-02 | 安徽农业大学 | Preparation method of bamboo powder-PBS composite material |
| CN116476498A (en) * | 2023-04-24 | 2023-07-25 | 苏州大学 | Biodegradable silk/jute reinforced PBS composite material and preparation method thereof |
| CN116476498B (en) * | 2023-04-24 | 2024-09-20 | 苏州大学 | Biodegradable silk/jute reinforced PBS composite material and preparation method thereof |
| CN117624853A (en) * | 2024-01-23 | 2024-03-01 | 天津永续新材料有限公司 | Bamboo powder modified polylactic acid-based biodegradable composite material and preparation method thereof |
| CN117624853B (en) * | 2024-01-23 | 2024-04-05 | 天津永续新材料有限公司 | Bamboo powder modified polylactic acid-based biodegradable composite material and preparation method thereof |
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