CN110014671A - A kind of high light transmission impact resins-screw type nano-fiber composite film, preparation method and its application - Google Patents
A kind of high light transmission impact resins-screw type nano-fiber composite film, preparation method and its application Download PDFInfo
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- CN110014671A CN110014671A CN201910308315.5A CN201910308315A CN110014671A CN 110014671 A CN110014671 A CN 110014671A CN 201910308315 A CN201910308315 A CN 201910308315A CN 110014671 A CN110014671 A CN 110014671A
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- screw type
- epoxy resin
- light transmission
- high light
- nanofiber
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0076—Electro-spinning characterised by the electro-spinning apparatus characterised by the collecting device, e.g. drum, wheel, endless belt, plate or grid
Abstract
The present invention provides a kind of light transmission impact resins-screw type nano-fiber composite film, preparation method and its applications, and composite membrane includes epoxy resin；And it is filled in the nanofiber array of the screw type orientation in the epoxy resin.The present invention has the nanofiber array of screw type orientation by filling in epoxy resin, and interface cohesion is very good between the nanofiber array and epoxy resin of screw type orientation, and the special construction of screw type enhances the shock resistance of composite membrane；And the arrangement mode of the nanofiber array of screw type orientation makes variation less obvious that the nuance because of refraction index generates.Composite membrane also has preferable tensile strength.The light transmittance of composite membrane is 88~90%；Compared with pure epoxy resin, when nanofiber-filled volume content is 3%, the shock resistance of composite membrane promotes 70%；Tensile strength in the orthogonal both direction of composite membrane reaches 40MPa.
Description
Technical field
The invention belongs to electrostatic spinning and composite membrane technology field more particularly to a kind of high light transmission impact resins-spirals
Type nano-fiber composite film, preparation method and its application.
Background technique
With the development of science and technology, just novel translucent material is sought, more to meet the technology of modern industrial and agricultural production
More to attract people's attention.High light transmission composite material as a kind of novel composite material by widespread demand in vehicle window, exhibition room,
Tunnel etc. has very big market prospects.
Currently, being broadly divided into particle and fiber as light transmissive composite materials reinforced phase.As paper pulp is 8 μm by Kagawa
Glass particle is compound with epoxy resin, has obtained removing the composite material of light transmittance >=85% (volume fraction 0.1) in visible light,
And the study found that when glass particle refraction index and resin matrix difference it is very small, about 10-3When, it is available
The preferable composite material of optical property.Also, with the increase of volume fraction, light transmittance is reduced.Diameter is by H.Yano etc.
The bacteria cellulose fibre of 50nm and transparent epoxy resin, polyacrylic resin are compound, have obtained that light transmission is excellent to answer
Close film；Composite membrane reaches 80% in the section 500~800nm, the light transmittance of the epoxy resin of 65% fiber content, with pure epoxy tree
Lipid phase ratio, transmission loss is less than 10%.Diameter is the nylon electrospinning fibre of 50~200nm and transparent by Bergshoef etc.
Epoxy resin-matrix bluk recombination maintains the transparency of composite material, but since the content of fiber is only 4%, composite material
Mechanical performance is not significantly improved.
Translucency and the excellent composite material of mechanical performance in order to obtain, those skilled in the art are up for further grinding
Study carefully, to expand the application range of composite material.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of high light transmission impact resins-screw type nanofiber is compound
Film, preparation method and its application, the composite membrane have compared with high impact properties, and have higher light transmittance.
The present invention provides a kind of high light transmission impact resins-screw type nano-fiber composite films, including epoxy resin；
And it is filled in the nanofiber array of the screw type orientation in the epoxy resin.
Preferably, the material of the nanofiber of screw type orientation be selected from polyoxyethylene, nylon, polyurethane, polylactic acid,
Polystyrene, poly lactide-glycolide acid, polylactide, polycaprolactone, polymethyl methacrylate, gathers polyvinyl alcohol
One of vinylidene and polyvinylpyrrolidone are a variety of.
Preferably, the epoxy resin is the asphalt mixtures modified by epoxy resin to the light transmittance of wavelength 400~800nm visible light 80% or more
Rouge.
Preferably, the nanofiber array of the screw type orientation accounts for the 1~10% of composite membrane volume fraction.
Preferably, the diameter of the nanofiber in the nanofiber array of the screw type orientation is 200nm~2 micron；
The spacing of adjacent nano fiber is 5~10 μm.
Preferably, the epoxy group content of the epoxy resin is 5780~6060mmol/kg, and epoxy molal weight is 165
~173g, viscosity are 2.5~4.5Pa.S, density 1.18g/cm3。
Preferably, the light transmittance of the composite membrane is 88~90%.
The present invention provides a kind of impact resins of high light transmission described in above-mentioned technical proposal-screw type nano-fiber composite films
Preparation method, comprising the following steps:
Epoxy resin and polyetheramine are mixed with mass ratio for 2:0.95~1.05, epoxy resin cure liquid is obtained；
On the nanofiber array that epoxy resin cure liquid is spread over to screw type orientation, constant temperature processing 45 at 50~70 DEG C
~55h obtains high light transmission impact resins-screw type nano-fiber composite film.
The present invention provides a kind of weatherstrip window or explosion proof window, the impact resins of the high light transmission as described in above-mentioned technical proposal-spiral shell
The composite membrane of the preparation of preparation method described in rotation type nano-fiber composite film or above-mentioned technical proposal is made；
The thickness of the weatherstrip window or explosion proof window is greater than 0.3cm.
The present invention provides a kind of safeguard film for cellular phone, the impact resins of the high light transmission as described in above-mentioned technical proposal-screw type
The composite membrane of the preparation of preparation method described in nano-fiber composite film or claim 8 is made；
The thickness of the safeguard film for cellular phone is less than or equal to 0.5mm.
The present invention provides a kind of high light transmission impact resins-screw type nano-fiber composite films, including epoxy resin；And
It is filled in the nanofiber array of the screw type orientation in the epoxy resin.The present invention has spiral shell by filling in epoxy resin
The nanofiber array of rotation type orientation, interface cohesion is very good between the nanofiber array and epoxy resin of screw type orientation,
The special construction of screw type enhances the shock resistance of composite membrane；And the arrangement mode of the nanofiber array of screw type orientation
So that variation less obvious generated by the nuance of refraction index.Composite membrane also has preferable tensile strength.It is real
Test the result shows that: the light transmittance of composite membrane be 88~90%；Compared with pure epoxy resin, nanofiber-filled volume content is
When 3%, the shock resistance of composite membrane promotes 70%；Tensile strength in the orthogonal both direction of composite membrane reaches
40MPa。
Detailed description of the invention
Fig. 1 is the process schematic of the nanofiber array of preparation screw type orientation provided by the invention；
Fig. 2 is the three-dimensional knot of high light transmission impact resins-screw type nano-fiber composite film prepared by the embodiment of the present invention 1
Structure schematic diagram；
Fig. 3 is screw type nano fibrous membrane and high light transmission impact resins-screw type Nanowire in the embodiment of the present invention 1
Tie up the photo of composite membrane；
Fig. 4 is the light transmittance test result of pure epoxy resin film and composite membrane；
Fig. 5 is pure epoxy resin film in the embodiment of the present invention 1, the composite membrane and embodiment for filling screw type nano fibrous membrane
The tensile property test result of filling one-dimensional order nano fibrous membrane in 2；
Fig. 6 is the shock resistance test chart of the composite membrane of pure epoxy resin film of the present invention and the preparation of embodiment 1；
Fig. 7 is resin-screw type nano-fiber composite film, pure epoxy resin film, tempering glass prepared by the embodiment of the present invention 1
The impact test test chart of glass film.
Specific embodiment
The present invention provides a kind of high light transmission impact resins-screw type nano-fiber composite films, including epoxy resin；
And it is filled in the nanofiber array of the screw type orientation in the epoxy resin.
The present invention fills in the epoxy by using the nanofiber array that screw type is orientated, and the orientation of screw type makes
Tensile strength and the light transmittance for obtaining composite membrane are preferable.
High light transmission impact resins-screw type nano-fiber composite film provided by the invention includes epoxy resin.The ring
Oxygen resin is the epoxy resin to the light transmittance of wavelength 400~800nm visible light 80% or more.The epoxy of the epoxy resin
Base content is 5780~6060mmol/kg, and epoxy molal weight is 165~173g, and viscosity is 2.5~4.5Pa.S, and density is
1.18g/cm3。
High light transmission impact resins-screw type nano-fiber composite film provided by the invention includes being filled in the asphalt mixtures modified by epoxy resin
The nanofiber array of screw type orientation in rouge.In the present invention, the material of the nanofiber of the screw type orientation is selected from
Polyoxyethylene, nylon, polyurethane, polylactic acid, polystyrene, polyvinyl alcohol, poly lactide-glycolide acid, polylactide,
One of polycaprolactone, polymethyl methacrylate, Kynoar and polyvinylpyrrolidone are a variety of.
In the present invention, the nanofiber array of the screw type orientation accounts for the 1~10% of composite membrane volume fraction.It is described
The diameter of nanofiber in the nanofiber array of screw type orientation is 200nm~2 micron.
In the present invention, the nanofiber array of screw type orientation preferably according to application No. is
It is prepared by the screw type oriented nanofibers array preparation method that the Chinese patent of CN201710800650.8 is recorded.Referring to figure
The process schematic of 1, Fig. 1 nanofiber array film being orientated for preparation screw type provided by the invention.The screw type orientation
Nanofiber array be preferably made in accordance with the following methods:
1) at room temperature, polymer is added in the solvent that cooperation finishes, is stirred, obtains the spinning of required mass fraction
Solution；
2) dedicated spinning reception device is mounted on electrostatic spinning apparatus, the dedicated spinning reception device is filled by receiving
Bottom set plate, reception device supporting element, electrode, motor, transmission shaft, fluted disc shape receive substrate composition, and motor is controlled by outside, energy
It is enough that the angle of substrate rotation setting is received with active toothed disk shape by transmission shaft to realize that angle is fed with constant rate；Fluted disc shape
It receives substrate and is higher than electrode in vertical direction, electrode is grounded；Then spinning nozzle is installed on bracket, adjusts spinning nozzle
Height and position make the vertical face spinning reception device in its front end, spinning nozzle rear end passes through solution delivery tube and syringe pump
It is connected, spinning nozzle current-carrying part is connect with high-voltage DC power supply；
3) spinning solution is fed by syringe pump, adjusts high-voltage DC power supply voltage, start spinning；
4) after fiber, which is paved with, to be received substrate and reach required thickness in monolayer, stop spinning, control fluted disc shape receives substrate
The angle of obtained nanofiber array feeding setting is driven, during feeding, the circumference flank profil that fluted disc shape receives substrate exists
Guarantee nanofiber array under the premise of the distributional pattern that fluted disc shape receives in substrate is constant, pullling nanofiber makes its fracture
Electrode is left to which orientation angles feeding occur as fluted disc shape receives substrate；Spinning process is restarted after feeding, is obtained
There is the nanofiber array of relative angle feeding to one layer of orientation；
5) step 4) process is repeated, the nanofiber array of screw type orientation is obtained.
In the present invention, the polymer is preferably selected from polyoxyethylene, nylon, polyurethane, polylactic acid, polystyrene, gathers
Vinyl alcohol, poly lactide-glycolide acid, polylactide, polycaprolactone, polymethyl methacrylate, Kynoar and
One of polyvinylpyrrolidone is a variety of.The solvent requirement can dissolve selected polymer, at normal temperature easily quickly
Volatilization；The solvent is preferably selected from dimethylformamide and/or tetrahydrofuran；The mass fraction of the spinning solution is preferably 20
~30%；In specific embodiment, the mass fraction of the spinning solution is 25%.
In the nanofiber preparation process of screw type orientation, electrode is grounded always, and when spinning passes through high-voltage DC power supply
High-voltage potential is provided, a pair of electrodes surface that electric field is directed toward ground connection by spinning nozzle is generated.Spinning solution is fed by syringe pump
To spinning nozzle, and charge is taken at spinning nozzle and is moved along electric field line to a certain side of a pair of electrodes；Meanwhile solvent is in sky
In can constantly send out solute polymer is caused to solidify, the nanofiber charged；Electrode moment is moved in nanofiber, by
In the electrically charged influence of nanofiber institute, the electrode moment electrification contacted with nanofiber so that electric field deflects, leads to nanometer
Fiber is mobile to the other side；And so on, oriented nanofiber can be formed between electrode and in fluted disc shape reception substrate
Array.
After the array density required for spinning reaches nanofiber array, stops spinning and control
Motor makes fluted disc shape receive the angle that substrate feeding is set.It is higher than electrode in vertical direction since fluted disc shape receives substrate, receives
Rice fiber will break away from electrode in the case where fluted disc shape receives the wealthy effect of pullling of substrate circumferential teeth and it is kept to receive in fluted disc shape
Distributional pattern in substrate.Therefore, as fluted disc shape receives the feeding of substrate, the orientation of nanofiber array will also rotate one
Corresponding angle.After feeding, restart spinning process, one layer of orientation, which can be obtained, has receiving for relative angle feeding
Rice fiber array.This process is repeated, the nanofiber array film of screw type orientation is obtained.
In the present invention, the feed speed of the spinning solution is 0.2~0.8mL/h.High-voltage DC power supply be 10~
12KV.Controlling fluted disc shape and receiving the feeding angle of substrate is preferably 20~40 degree；In specific embodiment, control fluted disc shape receives base
The feeding angle at bottom is 30 degree.
In the present invention, the light transmittance of the high light transmission impact resins-screw type nano-fiber composite film be 88~
90%.
The present invention provides a kind of impact resins of high light transmission described in above-mentioned technical proposal-screw type nano-fiber composite films
Preparation method, comprising the following steps:
Epoxy resin and polyetheramine are mixed with mass ratio for 2:0.95~1.05, epoxy resin cure liquid is obtained；
On the nanofiber array that epoxy resin cure liquid is spread over to screw type orientation, constant temperature processing 45 at 50~70 DEG C
~55h obtains high light transmission impact resins-screw type nano-fiber composite film.
In the present invention, the epoxy resin and polyetheramine are preferably 2:1 mixing according to mass ratio.
The nanofiber array that screw type is orientated preferably is fixed in substrate by the present invention, then slow epoxy resin cure
Liquid is uniformly spread on nanofiber array.Constant temperature handles 48h more preferably at 60 DEG C.
The present invention provides a kind of weatherstrip window or explosion proof window, the impact resins of the high light transmission as described in above-mentioned technical proposal-spiral shell
The composite membrane of the preparation of preparation method described in rotation type nano-fiber composite film or above-mentioned technical proposal is made；
The thickness of the weatherstrip window or explosion proof window is greater than 0.3cm.
The present invention provides a kind of safeguard film for cellular phone, the impact resins of the high light transmission as described in above-mentioned technical proposal-screw type
The composite membrane of the preparation of preparation method described in nano-fiber composite film or above-mentioned technical proposal is made；
The thickness of the safeguard film for cellular phone is less than or equal to 0.5mm.
In order to further illustrate the present invention, below with reference to embodiment to a kind of high light transmission shock resistance tree provided by the invention
Rouge-screw type nano-fiber composite film, preparation method and its application are described in detail, but cannot be interpreted as them pair
The restriction of the scope of the present invention.
Embodiment 1
At room temperature, dimethylformamide is mixed using mass ratio 1:1 as solvent with tetrahydrofuran, then by polyurethane
Grain is added in solvent, makes its mass fraction 25%, then with magnetic stirrer 2 hours, obtain spinning solution；
Two electrodes are grounded, spinning nozzle rear end is connected by conduit with syringe pump, spinning nozzle conductive part tap
High-voltage DC power supply adjusts 10~12KV of high-voltage DC power supply；
It adjusts syringe pump and spinning solution is fed with the speed of 0.2~0.8mL/H, solution takes charge simultaneously at spinning nozzle
Along electric field line to other side electrode movement, meanwhile, constantly volatilization causes solute to solidify to solvent in the sky, the Nanowire charged
Dimension.Electrode moment is moved in nanofiber, the electrode moment electrification contacted with nanofiber, so that electric field deflects,
Nanofiber is mobile to the other side；And so on, it can be received in fluted disc shape and form oriented nanofiber array in substrate；
It controls fluted disc shape and receives 30 degree of angle of substrate feeding, continue spinning, pick feed 5min；
Preparation process continues 6 hours, and the nanofiber array of screw type orientation is obtained to the end of stroke, and gained screw type is received
The diameter of rice fiber array is about 1 μm, and the spacing of fiber is 5~10 μm.
Epoxy resin and polyetheramine are mixed with mass ratio for 2:1, epoxy resin cure liquid is obtained；The epoxy resin
Epoxy group content is 5780~6060mmol/kg, and epoxy molal weight is 165~173g, and viscosity is 2.5~4.5Pa.S, density
For 1.18g/cm3；
The annulus (annulus material is PLA, internal diameter 20mm, outer diameter 25mm, with a thickness of 5mm) obtained with 3D printing, will
The nanofiber array membrane pressure of the screw type orientation of above-mentioned preparation is fixed in substrate, equably by the epoxy resin cure liquid
On the nanofiber array for spreading over screw type orientation, constant temperature handles 48h at 60 DEG C, obtains high light transmission impact resins-spiral
Type nano-fiber composite film.
Fig. 2 is the three-dimensional mould of high light transmission impact resins-screw type nano-fiber composite film prepared by the embodiment of the present invention 1
Type figure.Fig. 3 is the screw type nano fibrous membrane and high light transmission impact resins-screw type nanofiber in the embodiment of the present invention 1
The photo of composite membrane；Wherein, (1) is the photo of screw type nano fibrous membrane；(2) it is received for high light transmission impact resins-screw type
The photo of rice composite fiber membrane.
Fig. 4 is the light transmittance test result of pure epoxy resin film and composite membrane.Pass through test, the light transmittance of pure epoxy resin
About 88%；The light transmittance of composite membrane is 87.5%, it is seen then that screw type nano fibrous membrane is filled in resin, is had substantially no effect on
The light transmittance of composite membrane.
Embodiment 2
The preparation process for filling the composite membrane of one-dimensional order nano fibrous membrane is as follows:
1) at room temperature, dimethylformamide is mixed using mass ratio 1:1 as solvent with tetrahydrofuran, then by nylon
Grain, which is added in solvent, makes its mass fraction 25%,
2) height and the position for adjusting spinning nozzle make the electrode of the vertical face left side ground in its front end, spinning nozzle rear end
It is connected by conduit with syringe pump, spinning nozzle conductive part taps high-voltage DC power supply, then by two electrodes of horizontal direction
Ground connection, two electrodes of vertical direction connect high potential, about 1~3KV；
3) 10~15KV of high-voltage DC power supply or so is adjusted, is then fed by syringe pump with the speed of 0.2~0.8mL/h
Spinning solution, solution take charge at spinning nozzle and move along electric field line to the right electrodes of ground connection, meanwhile, solvent is in the sky
Can constantly send out causes solute to solidify, and obtains moving to the moment of right electrodes in nanofiber with the nanofiber of point, due to
Nanofiber electrification, the electrode moment electrification contacted with nanofiber, so that electric field shifts, leads to nanofiber to the left
It is mobile；
4) step 3), 120 layers of superposition, the nylon nano fiber array unidirectionally stacked, the diameter of gained fiber are repeated
About 2 μm.
Composite membrane and filling screw type nanometer of the present invention to pure epoxy resin film, filling one-dimensional order nano fibrous membrane
The composite membrane of tunica fibrosa carries out tension test, measures its mechanical property.Test result is shown in that Fig. 5, Fig. 5 are in the embodiment of the present invention 1
Pure epoxy resin film, fill screw type nano fibrous membrane composite membrane and embodiment 2 in filling one-dimensional order nano fibrous membrane
Tensile property test result.As can be seen from FIG. 5, the maximum stress for the tunica fibrosa tension test not being filled through is about 25.1MPa,
The composite membrane of filling one-dimensional order tunica fibrosa is about 47MPa in the maximum stress along fiber direction tension test, vertical
The maximum stress of fiber direction tension test is about 22.8MPa, although the composite membrane of filling one-dimensional order tunica fibrosa is on edge
Maximum stress is more than 40MPa in fiber direction tension test, but in the vertical direction tension test maximum stress with not
The pure resin film result of fiberfill fibers film is roughly the same.The composite membrane of screw type nano fibrous membrane is filled at orthogonal two
Tension test is carried out on direction, maximum stress all by 40MPa, shows preferable isotropism.Pure epoxy resin film is shown
Weaker tensile strength since nylon nano fiber has the tensile strength bigger than epoxy resin, about 300MPa, therefore is used
The composite membrane of nanofiber enhancing arranged in one direction shows strong anisotropic mechanical properties, i.e., along fiber side
To tensile strength be much larger than perpendicular to nanofiber tensile strength.With the composite membrane enhanced with the nanofiber of unidirectional array
It compares, the composite membrane with periodic spin structure shows isotropic mechanical performance and whole better mechanicalness
Can, i.e., increased ductility and tensile strength.
Embodiment 3
The present invention to be not filled by tunica fibrosa pure resin film, fill cross type tunica fibrosa composite membrane and filling spiral shell
The composite membrane of rotation type nano fibrous membrane carries out steel ball impact experiment, to measure its shock resistance.For being not filled by tunica fibrosa
Pure resin film, when steel ball drop height section concentrates on 20cm or so, film is cracked；For filling right-angled intersection fiber type
The composite membrane of film, when steel ball drop height section concentrates on 50cm or so, film is cracked；For filling screw type Nanowire
The composite membrane of film is tieed up, when steel ball drop height section concentrates on 70cm or so, film is cracked.Compared to being not filled by tunica fibrosa
Pure resin film and filling cross type tunica fibrosa composite membrane, the composite membrane of filling screw type nano fibrous membrane can bear
Impact absorbing energy is maximum, it was demonstrated that impact resistance is most strong.And the pure resin film for being not filled by tunica fibrosa, crackle are more smooth；
For filling the composite membrane of screw type nano fibrous membrane, crackle shows in a zigzag, to illustrate that composite membrane is not easy to break, inhale before being broken
Receipts energy is higher, and shock resistance is good.Fibrous composite (composite membrane) absorbs surge protection ring as protection membrane structure in advance
Oxygen resin mass, so that the shock resistance of sample promotes about 70% or so.Simultaneously, fibrous composite can be observed
The absorption peak continuously smooth of (composite membrane) runs through its whole thickness to the absorption of impact, this also illustrates that this fibrous composite is (multiple
Close film) there is good damping of shocks characteristic, and this is also result such as Fig. 6 closely bound up with its internal helicoid type microstructure
Shown, Fig. 6 is the shock resistance test chart of the composite membrane of pure epoxy resin film of the present invention and the preparation of embodiment 1.
The pure resin film for being not filled by tunica fibrosa, commercialization tempered glass film and filling spiral are covered each by glass slide
The composite membrane of type nano fibrous membrane carries out steel ball impact experiment, and steel ball falls from sustained height (about 80cm), when on glass slide not
Glass slide is broken when cover film, covering are not filled by the pure resin film of tunica fibrosa, covering commercialization tempered glass film, when covering is filled
When the composite membrane of screw type nano fibrous membrane, glass slide is intact, further illustrates resin-screw type nano-fiber composite film
Good shock resistance.As a result as shown in fig. 7, Fig. 7 is that resin-screw type nanofiber prepared by the embodiment of the present invention 1 is multiple
Close the impact test test chart of film, pure epoxy resin film, tempered glass film.
As seen from the above embodiment, the present invention provides a kind of high light transmission impact resins-screw type nanofiber is compound
Film, including epoxy resin；And it is filled in the nanofiber array of the screw type orientation in the epoxy resin.The present invention passes through ring
In oxygen resin filling have screw type orientation nanofiber array, screw type orientation nanofiber array and epoxy resin it
Between interface cohesion it is very good, the special construction of screw type enhances the shock resistance of composite membrane；And the nanometer of screw type orientation
The arrangement mode of fiber array makes variation less obvious that the nuance because of refraction index generates.Composite membrane also has
Preferable tensile strength.The results showed that the light transmittance of composite membrane is 88~90%；Compared with pure epoxy resin, Nanowire
When dimension packing volume content is 3%, the shock resistance of composite membrane promotes 70%；In the orthogonal both direction of composite membrane
Tensile strength reaches 40MPa.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of high light transmission impact resins-screw type nano-fiber composite film, including epoxy resin；
And it is filled in the nanofiber array of the screw type orientation in the epoxy resin.
2. high light transmission impact resins-screw type nano-fiber composite film according to claim 1, which is characterized in that institute
The material for stating the nanofiber of screw type orientation is selected from polyoxyethylene, nylon, polyurethane, polylactic acid, polystyrene, polyethylene
Alcohol, poly lactide-glycolide acid, polylactide, polycaprolactone, polymethyl methacrylate, Kynoar and poly- second
One of alkene pyrrolidone is a variety of.
3. high light transmission impact resins-screw type nano-fiber composite film according to claim 1, which is characterized in that institute
Stating epoxy resin is the epoxy resin to the light transmittance of wavelength 400~800nm visible light 80% or more.
4. high light transmission impact resins-screw type nano-fiber composite film according to claim 1, which is characterized in that institute
The nanofiber array for stating screw type orientation accounts for the 1~10% of composite membrane volume fraction.
5. high light transmission impact resins-screw type nano-fiber composite film according to claim 1, which is characterized in that institute
The diameter for stating the nanofiber in the nanofiber array of screw type orientation is 200nm~2 micron；The spacing of adjacent nano fiber
It is 5~10 μm.
6. high light transmission impact resins-screw type nano-fiber composite film according to claim 1, which is characterized in that institute
State epoxy resin epoxy group content be 5780~6060mmol/kg, epoxy molal weight be 165~173g, viscosity be 2.5~
4.5Pa.S, density 1.18g/cm3。
7. high light transmission impact resins-screw type nano-fiber composite film according to claim 1, which is characterized in that institute
The light transmittance for stating composite membrane is 88~90%.
8. a kind of preparation side of any one of claim 1~7 high light transmission impact resins-screw type nano-fiber composite film
Method, comprising the following steps:
Epoxy resin and polyetheramine are mixed with mass ratio for 2:0.95~1.05, epoxy resin cure liquid is obtained；
By epoxy resin cure liquid spread over screw type orientation nanofiber array on, at 50~70 DEG C constant temperature processing 45~
55h obtains high light transmission impact resins-screw type nano-fiber composite film.
9. a kind of weatherstrip window or explosion proof window, by any one of the claim 1~7 high light transmission impact resins-screw type nanometer
The composite membrane of the preparation of preparation method described in composite fiber membrane or claim 8 is made；
The thickness of the weatherstrip window or explosion proof window is greater than 0.3cm.
10. a kind of safeguard film for cellular phone, by any one of the claim 1~7 high light transmission impact resins-screw type nanofiber
The composite membrane of the preparation of preparation method described in composite membrane or claim 8 is made；
The thickness of the safeguard film for cellular phone is less than or equal to 0.5mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308315.5A CN110014671A (en) | 2019-04-17 | 2019-04-17 | A kind of high light transmission impact resins-screw type nano-fiber composite film, preparation method and its application |
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Application publication date: 20190716 |