CN109233206A - Plant fiber/epoxy resin composite material preparation method of rub resistance abrasion - Google Patents
Plant fiber/epoxy resin composite material preparation method of rub resistance abrasion Download PDFInfo
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- CN109233206A CN109233206A CN201811039553.2A CN201811039553A CN109233206A CN 109233206 A CN109233206 A CN 109233206A CN 201811039553 A CN201811039553 A CN 201811039553A CN 109233206 A CN109233206 A CN 109233206A
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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
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
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- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/61—Polyamines polyimines
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- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
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- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
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Abstract
The invention discloses a kind of rub resistances to wear natural fiber/epoxy resin composite material preparation method.Plant fiber be chopped after processing and is added in aq. polyethyleneimine, is handled by magnetic agitation and ultrasound, plant fiber is taken out and is filtered；Filtered plant fiber is added to the aqueous solution of graphite oxide microplate, magnetic agitation and ultrasonic treatment again, filtration drying is taken out and obtains modified plant fibers；Just mixing is proportionally carried out under epoxy resin and curing agent room temperature under mechanical stirring, adds the modified plant fibers of step 2 acquisition, mixture is then imported into mold precuring resolidification in ultrasonic water bath；It is cooled to room temperature after solidification, taking out batten is plant fiber/epoxy resin composite material.Plant fiber/epoxy resin composite material of the invention has good mechanical property, can be effectively reduced its coefficient of friction and wear rate with metal to the material that rubs, can be effectively reduced the temperature of friction surface.
Description
Technical field
The invention belongs to technical field of composite material manufacturing, relate to a kind of plant fiber/asphalt mixtures modified by epoxy resin of rub resistance abrasion
The preparation method of resin composite material.
Technical background
Plant fiber density is small, price is low, resourceful and renewable, in addition to being widely used in textile material and fuel
Outside, start in recent years to automobile parts industry, space material, the fields such as sports apparatus and construction material are marched.At present research compared with
The plant fibers such as more sisal fiber, awns flaxen fiber, bamboo fibre and coir fibre, due on specific modulus and specific strength with inorganic
Synthetic fibers are close, and process is more green, will not cause the allergic reaction (such as glass fibre) of skin and respiratory tract, because
And it is widely used in preparing plant fiber/resin composite materials.
Epoxy resin is the common basis material for preparing high-performance composite materials, and epoxy resin is compound with carbon fibre material,
The rocket tail piece that mechanical strength is big, impact flexibility is high and heat resistance is good can be prepared；Epoxy resin and fiber cloth carry out
Lamination can manufacture the insulation fabric part of motor and electric appliance；Epoxy resin with glass fibre is compound manufactures corrosion-resistant container.Ring
Oxygen resin becomes that prepare plant fiber compound with excellent adhesion strength, high cohesive force and excellent corrosion resistance etc.
The desired matrix of material.
Plant fiber there are it is easy to moisture absorption, with matrix resin poor compatibility the disadvantages of, so as to cause plant fiber/epoxy resin
The application of composite material is restricted.Especially plant fiber is added in resin, the friction and wear behavior of composite material can be made
Sharply decline, this is mainly due to during the fretting wear with other materials, due to plant fiber and resin matrix
Compatibility is poor, and plant fiber is easy to be stripped out from resin, further speeds up the abrasion of composite material of plant fiber.This
Outside, the plant fiber being stripped out is easy fast since a large amount of hydrophilic radical is contained on surface in the fretting wear of air atmosphere
Speed water suction, further speeds up the abrasion of metallic rubbing pairs.
Summary of the invention
In order to solve the problems, such as background technique, the invention proposes a kind of plant fiber/rings of rub resistance abrasion
The preparation method of epoxy resin composite material.It is and low after natural fiber is carried out fast and effective and environmentally friendly processing by the method for the present invention
Warm cured epoxy resin system progress is compound, and the uneven of sample is prevented by ultrasonic disperse and die flip and is layered out
It is existing, so that there is good antifriction for metallic rubbing pairs using plant fiber/epoxy resin composite material of this method preparation
Polishing machine is wiped, and the composite material that the mechanical property of material is prepared compared with conventional method increases.
The technical solution adopted by the present invention to solve the technical problems is to comprise the steps of:
Step 1: after plant fiber is carried out chopped processing, formation length is 1 centimetre or so, diameter distribution is 50
The chopped strand of~200um is added in 50 DEG C of aq. polyethyleneimine, is handled by magnetic agitation and ultrasound
Plant fiber is quickly removed filtering by 5min；
Filtered plant fiber is added to the aqueous solution of 70 DEG C of graphite oxide microplates, magnetic agitation and ultrasonic treatment again
10min takes out filtering, obtains modified plant fibers within dry 12 hours at 90 DEG C of temperature；
Step 2: just mixing is proportionally carried out under epoxy resin and curing agent room temperature under mechanical stirring, adds step
Then mixture is imported mold precuring 1 hour in 90 DEG C of ultrasonic water baths by two modified plant fibers obtained, then at 80 DEG C
Solidification 3~5 hours；
Step 3: being cooled to room temperature after solidification, and taking out batten is plant fiber/epoxy resin composite material.
Plant fiber is distinguishingly carried out processing modification with graphite oxide microplate by the present invention, is plant fiber/epoxy resin
Preparing for composite material provides the improvement result of mechanics machinery.
Processing method of the present invention, mainly using polyethyleneimine under aqueous conditions with the fiber of plant fibre surface
Element is crosslinked, and thicker adsorption layer is formed on its surface；There to be electronegative graphite oxide microplate again and there is electropositive
Fiber surface polyethyleneimine carry out effect form superficial layer, reduce the polarity and hydrophily on surface.
In the step 1, plant fiber selects coir and awns flaxen fiber.
In the step 1, the mass fraction of aq. polyethyleneimine is 10~15%, the degree of polymerization of polyethyleneimine
100 or so；The diameter distribution of graphite oxide microplate be 10~15um, graphite oxide microplate thickness distribution range be 50~
100nm, purity 99.92%, the mass fraction of graphite oxide microplate aqueous solution are 3~5%.
In the step 2, the mass ratio of the epoxy resin and curing agent is 2:1~3:1；Modified plant fibers account for
The 5%~15% of the quality summation of epoxy resin and curing agent.Preferably, the addition quality of modified plant fibers accounts for addition epoxy
10% mass fraction of resin and curing agent mixture.
In the step 2, the curing agent is 2- (1- piperazinyl) ethamine, benzylalcohol mixture.
In the step 2, the epoxy resin is using 4,4- (1- methyl Asia second) biphenol and (chloromethyl) epoxy second
Polymer or 2,2- [1,4 fourth diyl, two (Oxymethylene) diepoxide for example and the 2,3- glycidyl mixture of alkane.
In the step 2, in the curing process per a mold is overturn in half an hour, to prevent fiber formation bottom dense
Spend higher, the lower layer distributed of top concentration.
The epoxy resin solidifying system that the present invention uses, viscosity is higher under solidification temperature is lower and room temperature, with hot setting
System is compared, which can be effectively prevented the coking of plant fiber under hot conditions；In addition, higher viscosity is advantageous
In the stable dispersion of plant fiber in the epoxy, not easily settled formation layering.The plant fiber handled by above method
Surface is covered by polyethyleneimine, is conducive to increase the binding force between plant fiber and epoxy resin, to enhance composite wood
The mechanical strength of material.
The present invention is by the surface of graphite oxide microplate introduced plant fiber primarily to being formed in plant fibre surface micro-
The multi-scale enhancement system of micro-nano structure is conducive to the adhesion strength for further enhancing plant fiber and resin matrix, is conducive to multiple
Lubrication and antifriction during the abrasion of condensation material.
Graphite oxide microplate thermal conductivity of the present invention is fabulous, advantageously reduces generated frictional heat in friction,
Reduce fretting wear.
Implement to verify by embodiment, the short fine type plant fiber/epoxy resin composite wood prepared by the method for the invention
Material has good mechanical property, and tensile strength is greater than 36MPa, and elongation at break reaches 6.3~9.8%, and impact strength mentions
High by 22%~67%, coefficient of friction can be down to 0.22, and wear rate minimum is up to 96mm3/ 1000r, furthermore in the process of friction
The middle temperature that can be effectively reduced friction surface prevents being further exacerbated by for abrasion.
The beneficial effects of the present invention are:
(1) present invention uses plant fiber, from a wealth of sources and cheap, can degrade in a natural environment, is environment friend
Good property material.
(2) method of present invention processing fiber is quick and carries out under aqueous conditions, and organic solvent, more ring is not used
It protects.
(3) precuring that the present invention prepares composite material uses ultrasonic curing system, and constantly overturning in the curing process
Mold facilitates plant fiber in the epoxy evenly dispersed, prevents plant fiber from sinking to the bottom, and it is high to form bottom concentration, top
The low layered material of portion's concentration.
(4) plant fiber/epoxy resin composite material prepared by the present invention with good mechanical strength and has lower
Coefficient of friction and wear rate, be conducive to its using and promoting in automobile and building field.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as this hair
Bright range is only limitted to example.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
The embodiment of the present invention is as follows:
Embodiment 1
Step 1: coir be chopped after processing, formation length is 1 centimetre or so, diameter distribution be 100~
The chopped strand of 200um is added in 50 DEG C of the aq. polyethyleneimine of 10% mass fraction, by magnetic agitation and is surpassed
Sound carries out processing 5min, plant fiber is quickly removed filtering, then 70 DEG C of graphite oxides of fiber 3% mass fraction of addition are micro-
The aqueous solution of piece, magnetic agitation and ultrasonic treatment 10min, take out filtering, obtain modified plant fibers within dry 12 hours at 90 DEG C.
Step 2: will first carry out under mechanical stirring just mixing with the mass ratio of 2:1 under epoxy resin and curing agent room temperature,
The modified fibre for adding 10% mass fraction, is then introduced into mold, precuring 1 hour in 90 DEG C of ultrasonic water bath,
Solidify 5 hours at 80 DEG C again.Solidification terminates, and is cooled to room temperature, and takes out batten, is labeled as embodiment 1.
The contrast test result of the test mechanical property and friction and wear behavior of the present embodiment and comparative example 1 see the table below.
Table 1
Note: friction and wear test is 304 stainless steels to the material that rubs；Wear surface temperature terminates in frictional wear experiment
Afterwards, it by infrared non-contact thermometer, is measured in the place apart from surface 10cm, takes five point tests, be then averaged
Value.
Embodiment 2
Step 1: coir be chopped after processing, formation length is 1 centimetre or so, diameter distribution be 100~
The chopped strand of 200um is added in 50 DEG C of the aq. polyethyleneimine of 15% mass fraction, by magnetic agitation and is surpassed
Sound carries out processing 5min, plant fiber is quickly removed filtering, then 70 DEG C of graphite oxides of fiber 5% mass fraction of addition are micro-
The aqueous solution of piece, magnetic agitation and ultrasonic treatment 10min, take out filtering, obtain modified plant fibers within dry 12 hours at 90 DEG C.
Step 2: will first carry out under mechanical stirring just mixing with the mass ratio of 3:1 under epoxy resin and curing agent room temperature,
The modified fibre for adding 15% mass fraction, is then introduced into mold, precuring 1 hour in 90 DEG C of ultrasonic water bath,
Solidify 4 hours at 80 DEG C again.Solidification terminates, and is cooled to room temperature, and takes out batten, multiple labeled as modified plant fibers/epoxy resin
Condensation material.
The contrast test result of the test mechanical property and friction and wear behavior of the present embodiment and comparative example 1 see the table below.
Table 2
| Detection project | Execution standard | Comparative example 1 | Comparative example 2 | Embodiment 2 |
| Tensile strength (MPa) | GB/T1040-2006 | 28 | 25 | 42 |
| Elongation at break (%) | GB/T1040-2006 | 7.3 | 10.2 | 6.3 |
| Bending strength (Mpa) | GB/T9341-2008 | 38.9 | 31.7 | 56.4 |
| Impact strength (KJ/m2) | GB/T1843-2008 | 5.8 | 6.4 | 8.6 |
| Coefficient of friction | GB 10006-88 | 0.42 | 0.53 | 0.32 |
| Wear (mm3/1000r) | GB/T 5478-2008 | 197 | 157 | 106 |
| Wear surface temperature (DEG C) | Infrared ray non-contact | 79 | 77 | 61 |
Note: friction and wear test is 304 stainless steels to the material that rubs；Wear surface temperature terminates in frictional wear experiment
Afterwards, it by infrared non-contact thermometer, is measured in the place apart from surface 10cm, takes five point tests, be then averaged
Value.
Embodiment 3
Step 1: coir be chopped after processing, formation length is 1 centimetre or so, diameter distribution be 100~
The chopped strand of 200um is added in 50 DEG C of the aq. polyethyleneimine of 12% mass fraction, by magnetic agitation and is surpassed
Sound carries out processing 5min, plant fiber is quickly removed filtering, then 70 DEG C of graphite oxides of fiber 4% mass fraction of addition are micro-
The aqueous solution of piece, magnetic agitation and ultrasonic treatment 10min, take out filtering, obtain modified plant fibers within dry 12 hours at 90 DEG C.
Step 2: it will first be carried out under mechanical stirring under epoxy resin and curing agent room temperature with the mass ratio of 2.5:1 just mixed
It closes, adds the modified fibre of 12% mass fraction, be then introduced into mold, precuring 1 is small in 90 DEG C of ultrasonic water bath
When, then solidify 3 hours at 80 DEG C.Solidification terminates, and is cooled to room temperature, and takes out batten, is labeled as modified plant fibers/epoxy resin
Composite material.
The contrast test result of the test mechanical property and friction and wear behavior of the present embodiment and comparative example 1 see the table below.
Table 3
Note: friction and wear test is 304 stainless steels to the material that rubs；Wear surface temperature terminates in frictional wear experiment
Afterwards, it by infrared non-contact thermometer, is measured in the place apart from surface 10cm, takes five point tests, be then averaged
Value.
Embodiment 4
Step 1: after awns flaxen fiber is carried out chopped processing, formation length is 1 centimetre or so, diameter distribution is 100
The chopped strand of~200um is added in 50 DEG C of the aq. polyethyleneimine of 15% mass fraction, by magnetic agitation and
Ultrasound carries out processing 5min, plant fiber is quickly removed filtering, then fiber is added to 70 DEG C of graphite oxides of 3% mass fraction
The aqueous solution of microplate, magnetic agitation and ultrasonic treatment 10min, take out filtering, obtain within dry 12 hours improved plant fibre at 90 DEG C
Dimension.
Step 2: will first carry out under mechanical stirring just mixing with the mass ratio of 3:1 under epoxy resin and curing agent room temperature,
The modified fibre for adding 15% mass fraction, is then introduced into mold, precuring 1 hour in 90 DEG C of ultrasonic water bath,
Solidify 3 hours at 80 DEG C again.Solidification terminates, and is cooled to room temperature, and takes out batten, multiple labeled as modified plant fibers/epoxy resin
Condensation material.
The contrast test result of the test mechanical property and friction and wear behavior of the present embodiment and comparative example 1 see the table below.
Table 4
| Detection project | Execution standard | Comparative example 1 | Comparative example 2 | Embodiment 4 |
| Tensile strength (MPa) | GB/T1040-2006 | 28 | 25 | 45 |
| Elongation at break (%) | GB/T1040-2006 | 7.3 | 10.2 | 9.8 |
| Bending strength (Mpa) | GB/T9341-2008 | 38.9 | 31.7 | 46.1 |
| Impact strength (KJ/m2) | GB/T1843-2008 | 5.8 | 6.4 | 9.7 |
| Coefficient of friction | GB 10006-88 | 0.42 | 0.53 | 0.36 |
| Wear (mm3/1000r) | GB/T 5478-2008 | 197 | 157 | 110 |
| Wear surface temperature (DEG C) | Infrared ray non-contact | 79 | 77 | 71 |
Note: friction and wear test is 304 stainless steels to the material that rubs；Wear surface temperature terminates in frictional wear experiment
Afterwards, it by infrared non-contact thermometer, is measured in the place apart from surface 10cm, takes five point tests, be then averaged
Value.
Embodiment 5
Step 1: after awns flaxen fiber is carried out chopped processing, formation length is 1 centimetre or so, diameter distribution is 100
The chopped strand of~200um is added in 50 DEG C of the aq. polyethyleneimine of 10% mass fraction, by magnetic agitation and
Ultrasound carries out processing 5min, plant fiber is quickly removed filtering, then fiber is added to 70 DEG C of graphite oxides of 5% mass fraction
The aqueous solution of microplate, magnetic agitation and ultrasonic treatment 10min, take out filtering, obtain within dry 12 hours improved plant fibre at 90 DEG C
Dimension.
Step 2: will first carry out under mechanical stirring just mixing with the mass ratio of 2:1 under epoxy resin and curing agent room temperature,
The modified fibre for adding 10% mass fraction, is then introduced into mold, precuring 1 hour in 90 DEG C of ultrasonic water bath,
Solidify 5 hours at 80 DEG C again.Solidification terminates, and is cooled to room temperature, and takes out batten, multiple labeled as modified plant fibers/epoxy resin
Condensation material.
The contrast test result of the test mechanical property and friction and wear behavior of the present embodiment and comparative example 1 see the table below.
Table 5
| Detection project | Execution standard | Comparative example 1 | Comparative example 2 | Embodiment 5 |
| Tensile strength (MPa) | GB/T1040-2006 | 28 | 25 | 39 |
| Elongation at break (%) | GB/T1040-2006 | 7.3 | 10.2 | 8.4 |
| Bending strength (Mpa) | GB/T9341-2008 | 38.9 | 31.7 | 44.3 |
| Impact strength (KJ/m2) | GB/T1843-2008 | 5.8 | 6.4 | 7.1 |
| Coefficient of friction | GB 10006-88 | 0.42 | 0.53 | 0.35 |
| Wear (mm3/1000r) | GB/T 5478-2008 | 197 | 157 | 105 |
| Wear surface temperature (DEG C) | Infrared ray non-contact | 79 | 77 | 68 |
Note: friction and wear test is 304 stainless steels to the material that rubs；Wear surface temperature terminates in frictional wear experiment
Afterwards, it by infrared non-contact thermometer, is measured in the place apart from surface 10cm, takes five point tests, be then averaged
Value.
Embodiment 6
Step 1: after awns flaxen fiber is carried out chopped processing, formation length is 1 centimetre or so, diameter distribution is 100
The chopped strand of~200um is added in 50 DEG C of the aq. polyethyleneimine of 12% mass fraction, by magnetic agitation and
Ultrasound carries out processing 5min, plant fiber is quickly removed filtering, then fiber is added to 70 DEG C of graphite oxides of 4% mass fraction
The aqueous solution of microplate, magnetic agitation and ultrasonic treatment 10min, take out filtering, obtain within dry 12 hours improved plant fibre at 90 DEG C
Dimension.
Step 2: it will first be carried out under mechanical stirring under epoxy resin and curing agent room temperature with the mass ratio of 2.5:1 just mixed
It closes, adds the modified fibre of 12% mass fraction, be then introduced into mold, precuring 1 is small in 90 DEG C of ultrasonic water bath
When, then solidify 4 hours at 80 DEG C.Solidification terminates, and is cooled to room temperature, and takes out batten, is labeled as modified plant fibers/epoxy resin
Composite material.
The contrast test result of the test mechanical property and friction and wear behavior of the present embodiment and comparative example 1 see the table below.
Table 6
| Detection project | Execution standard | Comparative example 1 | Comparative example 2 | Embodiment 6 |
| Tensile strength (MPa) | GB/T1040-2006 | 28 | 25 | 41 |
| Elongation at break (%) | GB/T1040-2006 | 7.3 | 10.2 | 8.9 |
| Bending strength (Mpa) | GB/T9341-2008 | 38.9 | 31.7 | 48.3 |
| Impact strength (KJ/m2) | GB/T1843-2008 | 5.8 | 6.4 | 7.4 |
| Coefficient of friction | GB 10006-88 | 0.42 | 0.53 | 0.29 |
| Wear (mm3/1000r) | GB/T 5478-2008 | 197 | 157 | 96 |
| Wear surface temperature (DEG C) | Infrared ray non-contact | 79 | 77 | 68 |
Note: friction and wear test is 304 stainless steels to the material that rubs；Wear surface temperature terminates in frictional wear experiment
Afterwards, it by infrared non-contact thermometer, is measured in the place apart from surface 10cm, takes five point tests, be then averaged
Value.
Comparative example in above-mentioned each table is as follows:
1 preparation method of comparative example:
Be prepared as follows one group of original standard sample: after coir is carried out chopped processing, formation length is 1 li
Rice or so, diameter distribution be 100~200um chopped strand, first by under epoxy resin and curing agent room temperature with the matter of 2:1
Amount mixing just than progress under mechanical stirring, adds coir, and coir accounts for the 10% of epoxy resin and curing agent gross mass,
It is then introduced into mold, the precuring 1 hour under conditions of 90 DEG C, then solidify 5 hours at 80 DEG C.Solidification terminates, and is cooled to
Room temperature takes out batten, is labeled as comparative example 1.
2 preparation method of comparative example:
According to document " Manjula R, Raju N V, Chakradhar R, et al.Effect of Thermal
Aging and Chemical Treatment on Tensile Properties of Coir Fiber[J].Journal
Of Natural Fibers, 2017,15 (1): 1-10. " the method is modified coir, and 10% modification coconut palm is fine
Dimension is added in the mixture of epoxy resin and curing agent, strong stirring, imports mold, precuring 1 is small under conditions of 90 DEG C
When, then solidify 5 hours at 80 DEG C.Solidification terminates, and is cooled to room temperature, and takes out batten, is labeled as comparative example 2.
Son and comparison example are relatively rear, it is apparent that plant fiber/ring that the present invention prepares through the foregoing embodiment
Epoxy resin composite material has good mechanical property, can be effectively reduced its coefficient of friction and abrasion with metal to the material that rubs
Rate can be effectively reduced the temperature of friction surface, and there is it to protrude significant technical effect.
Claims (7)
1. a kind of plant fiber/epoxy resin composite material preparation method of rub resistance abrasion, it is characterised in that comprising following
Step:
Step 1: plant fiber be chopped after processing, formation length is 1 centimetre or so, diameter distribution be 50~
The chopped strand of 200um is added in 50 DEG C of aq. polyethyleneimine, is handled by magnetic agitation and ultrasound
Plant fiber is taken out and is filtered by 5min；
Filtered plant fiber is added to the aqueous solution of 70 DEG C of graphite oxide microplates, magnetic agitation and ultrasonic treatment 10min again,
Filtering is taken out, obtains modified plant fibers within dry 12 hours at 90 DEG C of temperature；
Step 2: just mixing is proportionally carried out under epoxy resin and curing agent room temperature under mechanical stirring, step 2 is added and obtains
Then mixture is imported mold precuring 1 hour in 90 DEG C of ultrasonic water baths by the modified plant fibers obtained, then in 80 DEG C of solidifications
3~5 hours；
Step 3: being cooled to room temperature after solidification, and taking out batten is plant fiber/epoxy resin composite material.
2. a kind of plant fiber/epoxy resin composite material preparation method of rub resistance abrasion according to claim 1,
It is characterized by: plant fiber selects coir and awns flaxen fiber in the step 1.
3. a kind of plant fiber/epoxy resin composite material preparation method of rub resistance abrasion according to claim 1,
It is characterized by: the mass fraction of aq. polyethyleneimine is 10~15%, the polymerization of polyethyleneimine in the step 1
Degree is 100 or so；The diameter distribution of graphite oxide microplate is 10~15um, and graphite oxide microplate thickness distribution range is 50
~100nm, purity 99.92%, the mass fraction of graphite oxide microplate aqueous solution are 3~5%.
4. a kind of plant fiber/epoxy resin composite material preparation method of rub resistance abrasion according to claim 1,
It is characterized by: the mass ratio of the epoxy resin and curing agent is 2:1~3:1 in the step 2；Modified plant fibers
Account for the 5%~15% of the quality summation of epoxy resin and curing agent.
5. a kind of plant fiber/epoxy resin composite material preparation method of rub resistance abrasion according to claim 1,
It is characterized by: the curing agent is 2- (1- piperazinyl) ethamine, benzylalcohol mixture in the step 2.
6. a kind of plant fiber/epoxy resin composite material preparation method of rub resistance abrasion according to claim 1,
It is characterized by: the epoxy resin is using 4,4- (1- methyl Asia second) biphenol and (chloromethyl) ring in the step 2
Polymer or 2,2- [1,4 fourth diyl, two (Oxymethylene) diepoxide for example and the 2,3- glycidyl mixture of oxidative ethane.
7. a kind of plant fiber/epoxy resin composite material preparation method of rub resistance abrasion according to claim 1,
It is characterized by: in the step 2, in the curing process per mold of overturning in half an hour.
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