CN107880525A - A kind of keyboard protective film - Google Patents
A kind of keyboard protective film Download PDFInfo
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- CN107880525A CN107880525A CN201711113628.2A CN201711113628A CN107880525A CN 107880525 A CN107880525 A CN 107880525A CN 201711113628 A CN201711113628 A CN 201711113628A CN 107880525 A CN107880525 A CN 107880525A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2425/02—Homopolymers or copolymers of hydrocarbons
- C08J2425/04—Homopolymers or copolymers of styrene
- C08J2425/06—Polystyrene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
- C08K2003/3054—Ammonium sulfates
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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Abstract
The invention discloses a kind of keyboard protective film, belong to technical field of polymer materials.Count in parts by weight, 35~45 parts of TPU are weighed successively, 3~5 parts of plasticizer, 2~4 parts of age resistor, 8~12 parts of mixed extracts, 5~10 parts of mixed essential oils, 4~6 parts of modified glass-fibers, 15~20 parts of polystyrene, 2~5 parts of ammonium sulfate, 5~8 parts of nano-silver powders and 1~3 part of dispersant, ammonium sulfate is crushed, sieving, obtain ammonium sulfate powder, by TPU, plasticizer, age resistor, mixed extract, mixed essential oil, modified glass-fiber, polystyrene, ammonium sulfate powder, nano-silver powder and dispersant are added in mixer, and the water of 0.5~0.8 times of TPU mass is added into mixer, after being stirred, obtain mixture, mixture is extruded in double screw extruder, obtain blank, by blank casting film-forming, obtain keyboard protective film.Keyboard protective film prepared by the present invention has excellent anti-microbial property, while has preferable mechanical property.
Description
Technical field
The invention discloses a kind of keyboard protective film, belong to technical field of polymer materials.
Background technology
Keyboard membrane is made using TPU elastomeric materials by fashion IT.The bottom absorption of TPU smooth feel silica gel
Power integrates the high-grade keyboard membrane of two big material advantages.The material that TPU is used as keyboard membrane is being proper in early days, but it
Also there is the shortcomings that unconquerable such as：It is more crisp be easily pulled off, compactness difference is not fixed easily.
Increasingly perfect with information system, medical institutions carry out with no paper at all just in wider array of field, the covering of computer
Face expands day by day, and the computor-keyboard and the microbiological pollution of mouse to accompany with this, also increasingly attracts attention.There is scholar's tune
Look into and find that each button contaminating microorganisms of keyboard averagely may be up to 20.1CFU.
ICU patient causes its hospital infection high due to factors such as underlying diseases are serious, store period is more, hypoimmunities
Hair, especially Multidrug resistant bacteria such as MRSA and Acinetobacter baumannii.It is many in the hospital infection of ICU patient to intersect biography between patient
Broadcast, the hand of medical worker has played very crucial instrumentality between hospital environment and patient, and it is sudden and violent to even result in hospital infection
Hair.Substantial amounts of contaminating microorganisms, norovirus, clostridium difficile, Acinetobacter baumannii etc. in hospital environment and body surface be present,
It can for a long time be survived in all kinds of body surfaces of hospital, turn into the important hidden danger of hospital infection and dangerous link.It is each at present
The increasingly popularization of hospital information system, computer progressively instead of the position of case record, but equally also bring new problem：
The serious pollution problem of the microorganism of computer keyboard and mouse.Research finds that the germ contamination of surface of keyboard may be up to（153±
369）CFU/ is per key, and it can be used as intermediary by the hand of medical worker and be broadcast to the patient of hypoimmunity and causes to infect.
Research finds that its microorganism pollution degree can effectively be reduced by periodically sterilizing computor-keyboard using special ultraviolet, and regular ultraviolet shines
The keyboard penetrated can keep no bacteria pollution state for a long time.Also studies have found that, can be with the computor-keyboard film with antibacterial action
Effectively reduce the microbial contamination of surface of keyboard.But the problem of anti-microbial property is bad also be present in traditional computor-keyboard film,
Therefore also need to study it.
The content of the invention
The present invention solves the technical problem of：For conventional keyboard film anti-microbial property it is bad the problem of, there is provided one
Kind keyboard protective film.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of keyboard protective film, it is made up of the raw material of following parts by weight：
35~45 parts of TPU
3~5 parts of plasticizer
2~4 parts of age resistor
8~12 parts of mixed extract
5~10 parts of mixed essential oil
4~6 parts of modified glass-fiber
15~20 parts of polystyrene
2~5 parts of ammonium sulfate
1~3 part of dispersant
5~8 parts of nano-silver powder
The TPU is：TPUE rubber；
The preparation method of the mixed extract：
By tealeaves and granatum in mass ratio 3：1~3：2 mixing, and add argy wormwood and the tealeaves matter of 0.5~0.6 times of tea quality
2~4h is boiled in the water of 4~5 times of amount, heating, filters, and concentration, obtains mixed extract；
The preparation method of the mixed essential oil is：
By ginger oil and sage oil in mass ratio 1：2~1：5 mixing, and add the black pepper of 0.3~0.4 times of sage oil quality
Oil, after being stirred, obtain mixed essential oil；
The preparation method of the modified glass-fiber is：
By glass fibre and water in mass ratio 1：8~1：12 mixing, and the silane for adding 0.4~0.6 times of glass fiber quality is even
Join agent, after being stirred, add the nano titanium oxide of 0.2~0.4 times of glass fiber quality, sonic oscillation, filter, dry,
Obtain modified glass-fiber；
The preparation method of the keyboard protective film is：
（1）Formed by raw material and weigh each component；
（2）Ammonium sulfate is crushed, sieves, obtains ammonium sulfate powder, by TPU, plasticizer, age resistor, mixed extract, mixing essence
Oil, modified glass-fiber, polystyrene, ammonium sulfate powder, nano-silver powder and dispersant are added in mixer, and into mixer
The water of 0.5~0.8 times of TPU mass is added, after being stirred, mixture is obtained, mixture is extruded in double screw extruder, obtained
Blank, by blank casting film-forming, obtain keyboard protective film.
The plasticizer is dioctyl phthalate, in di-n-octyl phthalate or dicyclohexyl phthalate
Any one.
The age resistor is antioxidant 4010NA, any one or a few mixing in antioxidant 264 or antioxidant 4010
Thing.
The dispersant is dispersant NNO, any one in dispersant 5040 or Dispersant MF.
The silane coupler is silane resin acceptor kh-550, in silane coupler KH-560 or Silane coupling reagent KH-570
Any one.
The beneficial effects of the invention are as follows：
（1）The present invention adds modified glass-fiber when preparing keyboard protective film, and first, the addition of glass fibre can strengthen keyboard
Each intermolecular active force in film system is protected, so that the mechanical property of product is improved, secondly fiberglass surfacing is inhaled
Attached nano titanium oxide, after being added in protection film system, it can be sterilized under illumination effect, so that the antibiotic property of product
It can get a promotion, and nano titanium oxide can change smooth fiberglass surfacing structure after fiberglass surfacing absorption
For coarse structure, it is affiliated to so as to be advantageous to the winding of the strand of the macromolecular organic matter such as TPU, avoids product from being sent out in loading process
Raw sliding, makes product mechanical property be further enhanced；
（2）The present invention adds polystyrene and ammonium sulfate when preparing keyboard protective film, on the one hand, polystyrene is adding keyboard
After protecting in film system, the hydrophobic performance of diaphragm can be improved, while can also be densified protection membrane superficial tissue, avoids micro- life
Thing adheres to, so that the anti-microbial property of product is improved, on the other hand, the ammonium sulfate of addition can be in extrusion and forming process
Gas is produced, so that long-living many equally distributed micro-bubbles in protection film system, nano-silver powder can enter micro-bubble
In, and then be evenly distributed in protection film system, and nano-emulsion lug structure is formed on film surface, this nano-emulsion lug structure can change
The contact angle on film surface, product hydrophobic performance is improved, avoids microorganism from adhering to, so that the anti-microbial property of product further carries
It is high；
（3）The present invention adds mixed essential oil when preparing keyboard protective film, on the one hand, the addition of mixed essential oil can be to surface of keyboard
Bacterium play inhibitory action, so as to improve the anti-microbial property of product, on the other hand, due to mixed essential oil portion in use
Divide volatilization, inhibitory action can be played to the bacterium in environment, so that the anti-microbial property of product further improves.
Embodiment
By tealeaves and granatum in mass ratio 3：1~3：2 are mixed in beaker, and tea quality 0.5 is added into beaker
~0.6 times of argy wormwood and the water of 4~5 times of tea quality, beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 95
~100 DEG C, under conditions of rotating speed is 280~350r/min, after heating stirring boils 2~4h, filtering, mixed liquor is obtained, will be mixed
Liquid moves into Rotary Evaporators, is 55~65 DEG C in temperature, and rotating speed is 120~180r/min, gives as security the bar that pressure is 600~800kPa
Under part, 60~80min of spin concentration, mixed extract is obtained；By ginger oil and sage oil in mass ratio 1：2~1：5 are mixed in burning
In bottle, and the black pepper oil of 0.3~0.4 times of sage oil quality is added into flask, flask immigration digital display is tested the speed constant temperature magnetic
Power agitator, it is 75~85 DEG C in temperature, under conditions of rotating speed is 300~350r/min, is stirred 35~50min, obtains mixed
Close essential oil；By glass fibre and water in mass ratio 1：8~1：12 mixing, and add the silane of 0.4~0.6 times of glass fiber quality
Coupling agent, under conditions of temperature is 75~90 DEG C, after 6~8h of mixing immersion, add 0.2~0.4 times of glass fiber quality
Nano titanium oxide, in frequency be 45~50kHz under conditions of 15~25min of sonic oscillation, filtering, filter cake is obtained, by filter cake
Drying box is moved into, under conditions of temperature is 85~95 DEG C, 60~90min is dried, obtains modified glass-fiber；In parts by weight
Meter, 35~45 parts of TPU is weighed successively, 3~5 parts of plasticizer, 2~4 parts of age resistor, 8~12 parts of mixed extracts, 5~10 parts mixed
Close essential oil, 4~6 parts of modified glass-fibers, 15~20 parts of polystyrene, 2~5 parts of ammonium sulfate, 5~8 parts of nano-silver powders and 1~3
Part dispersant, ammonium sulfate is added in pulverizer, is crushed, and is crossed 120~160 mesh sieves, is obtained ammonium sulfate powder；By TPU, plasticizer,
Age resistor, mixed extract, mixed essential oil, modified glass-fiber, polystyrene, ammonium sulfate powder, nano-silver powder and dispersant
Add in mixer, and the water of 0.5~0.8 times of TPU mass is added into mixer, in the bar that rotating speed is 400~480r/min
Be stirred 45~60min under part, obtain mixture, by mixture move into double screw extruder in, in temperature be 180~220 DEG C
Under conditions of extrude, obtain blank, by blank casting film-forming, obtain keyboard protective film.The TPU is：TPUE
Rubber.The plasticizer is dioctyl phthalate, is appointed in di-n-octyl phthalate or dicyclohexyl phthalate
Meaning is a kind of.The age resistor is antioxidant 4010NA, any one or a few mixing in antioxidant 264 or antioxidant 4010
Thing.The dispersant is dispersant NNO, any one in dispersant 5040 or Dispersant MF.The silane coupler is silane
Any one in coupling agent KH-550, silane coupler KH-560 or Silane coupling reagent KH-570.
Example 1
By tealeaves and granatum in mass ratio 3：2 are mixed in beaker, and into beaker add 0.6 times of tea quality argy wormwood and
The water that 5 times of tea quality, beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 100 DEG C, rotating speed 350r/min
Under conditions of, after heating stirring boils 4h, filtering, obtain mixed liquor, mixed liquor moved into Rotary Evaporators, in temperature be 65 DEG C,
Rotating speed is 180r/min, gives as security pressure under conditions of 800kPa, spin concentration 80min, to obtain mixed extract；By ginger oil and rat-tail
Careless oil in mass ratio 1：5 are mixed in flask, and the black pepper oil of 0.4 times of sage oil quality is added into flask, by flask
Move into digital display to test the speed constant temperature blender with magnetic force, be 85 DEG C in temperature, under conditions of rotating speed is 350r/min, be stirred 50min,
Obtain mixed essential oil；By glass fibre and water in mass ratio 1：12 mixing, and add the silane coupled of 0.6 times of glass fiber quality
Agent, under conditions of temperature is 90 DEG C, after mixing immersion 8h, the nano titanium oxide of 0.4 times of glass fiber quality is added, in
Frequency is sonic oscillation 25min under conditions of 50kHz, filtering, obtains filter cake, filter cake is moved into drying box, in temperature be 95 DEG C
Under the conditions of, 90min is dried, obtains modified glass-fiber；Count in parts by weight, weigh 45 parts of TPU successively, 5 parts of plasticizer, 4 parts anti-
Old agent, 12 parts of mixed extracts, 10 parts of mixed essential oils, 6 parts of modified glass-fibers, 20 parts of polystyrene, 5 parts of ammonium sulfate, 8 parts are received
Rice silver powder and 3 parts of dispersants, ammonium sulfate is added in pulverizer, crushed, crossed 160 mesh sieves, obtain ammonium sulfate powder；By TPU, plasticising
Agent, age resistor, mixed extract, mixed essential oil, modified glass-fiber, polystyrene, ammonium sulfate powder, nano-silver powder and scattered
Agent is added in mixer, and the water of 0.8 times of TPU mass is added into mixer, is stirred under conditions of rotating speed is 480r/min
60min is mixed, obtains mixture, mixture is moved into double screw extruder, is extruded under conditions of being 220 DEG C in temperature, obtains base
Material, by blank casting film-forming, obtains keyboard protective film.The TPU is：TPUE rubber.The plasticizer is
Dioctyl phthalate.The age resistor is antioxidant 4010NA.The dispersant is dispersant NNO.It is described silane coupled
Agent is silane resin acceptor kh-550.
Example 2
By tealeaves and granatum in mass ratio 3：2 are mixed in beaker, and into beaker add 0.6 times of tea quality argy wormwood and
The water that 5 times of tea quality, beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 100 DEG C, rotating speed 350r/min
Under conditions of, after heating stirring boils 4h, filtering, obtain mixed liquor, mixed liquor moved into Rotary Evaporators, in temperature be 65 DEG C,
Rotating speed is 180r/min, gives as security pressure under conditions of 800kPa, spin concentration 80min, to obtain mixed extract；By ginger oil and rat-tail
Careless oil in mass ratio 1：5 are mixed in flask, and the black pepper oil of 0.4 times of sage oil quality is added into flask, by flask
Move into digital display to test the speed constant temperature blender with magnetic force, be 85 DEG C in temperature, under conditions of rotating speed is 350r/min, be stirred 50min,
Obtain mixed essential oil；Number meter by weight, weighs 45 parts of TPU successively, 5 parts of plasticizer, 4 parts of age resistor, 12 parts of mixed extracts, 10 parts
Mixed essential oil, 6 parts of glass fibres, 20 parts of polystyrene, 5 parts of ammonium sulfate, 8 parts of nano-silver powders and 3 parts of dispersants, by ammonium sulfate plus
Enter in pulverizer, crush, cross 160 mesh sieves, obtain ammonium sulfate powder；By TPU, plasticizer, age resistor, mixed extract, mixing essence
Oil, glass fibre, polystyrene, ammonium sulfate powder, nano-silver powder and dispersant are added in mixer, and are added into mixer
The water that 0.8 times of TPU mass, 60min is stirred under conditions of rotating speed is 480r/min, mixture is obtained, mixture is moved into
In double screw extruder, extruded under conditions of being 220 DEG C in temperature, obtain blank, by blank casting film-forming, obtain keyboard protective film.
The TPU is：TPUE rubber.The plasticizer is dioctyl phthalate.The age resistor is anti-
Old agent 4010NA.The dispersant is dispersant NNO.The silane coupler is silane resin acceptor kh-550.
Example 3
By tealeaves and granatum in mass ratio 3：2 are mixed in beaker, and into beaker add 0.6 times of tea quality argy wormwood and
The water that 5 times of tea quality, beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 100 DEG C, rotating speed 350r/min
Under conditions of, after heating stirring boils 4h, filtering, obtain mixed liquor, mixed liquor moved into Rotary Evaporators, in temperature be 65 DEG C,
Rotating speed is 180r/min, gives as security pressure under conditions of 800kPa, spin concentration 80min, to obtain mixed extract；By ginger oil and rat-tail
Careless oil in mass ratio 1：5 are mixed in flask, and the black pepper oil of 0.4 times of sage oil quality is added into flask, by flask
Move into digital display to test the speed constant temperature blender with magnetic force, be 85 DEG C in temperature, under conditions of rotating speed is 350r/min, be stirred 50min,
Obtain mixed essential oil；By glass fibre and water in mass ratio 1：12 mixing, and add the silane coupled of 0.6 times of glass fiber quality
Agent, under conditions of temperature is 90 DEG C, after mixing immersion 8h, the nano titanium oxide of 0.4 times of glass fiber quality is added, in
Frequency is sonic oscillation 25min under conditions of 50kHz, filtering, obtains filter cake, filter cake is moved into drying box, in temperature be 95 DEG C
Under the conditions of, 90min is dried, obtains modified glass-fiber；Count in parts by weight, weigh 45 parts of TPU successively, 5 parts of plasticizer, 4 parts anti-
Old agent, 12 parts of mixed extracts, 10 parts of mixed essential oils, 6 parts of modified glass-fibers, 8 parts of nano-silver powders and 3 parts of dispersants, will
TPU, plasticizer, age resistor, mixed extract, mixed essential oil, modified glass-fiber, nano-silver powder and dispersant add mixer
In, and the water of 0.8 times of TPU mass is added into mixer, 60min is stirred under conditions of rotating speed is 480r/min, is obtained
Mixture, mixture is moved into double screw extruder, extruded under conditions of being 220 DEG C in temperature, obtain blank, blank is cast
Film forming, obtain keyboard protective film.The TPU is：TPUE rubber.The plasticizer is that phthalic acid two is pungent
Ester.The age resistor is antioxidant 4010NA.The dispersant is dispersant NNO.The silane coupler is silane coupler
KH-550。
Example 4
By tealeaves and granatum in mass ratio 3：2 are mixed in beaker, and into beaker add 0.6 times of tea quality argy wormwood and
The water that 5 times of tea quality, beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 100 DEG C, rotating speed 350r/min
Under conditions of, after heating stirring boils 4h, filtering, obtain mixed liquor, mixed liquor moved into Rotary Evaporators, in temperature be 65 DEG C,
Rotating speed is 180r/min, gives as security pressure under conditions of 800kPa, spin concentration 80min, to obtain mixed extract；By glass fibre with
Water in mass ratio 1：12 mixing, and the silane coupler of 0.6 times of glass fiber quality is added, under conditions of temperature is 90 DEG C,
After mixing immersion 8h, the nano titanium oxide of 0.4 times of glass fiber quality is added, the ultrasound under conditions of frequency is 50kHz
25min is vibrated, filtering, filter cake is obtained, filter cake is moved into drying box, under conditions of temperature is 95 DEG C, 90min is dried, obtains modification
Glass fibre；Count in parts by weight, weigh 45 parts of TPU successively, 5 parts of plasticizer, 4 parts of age resistor, 12 parts of mixed extracts, 6 parts
Modified glass-fiber, 20 parts of polystyrene, 5 parts of ammonium sulfate, 8 parts of nano-silver powders and 3 parts of dispersants, pulverizer is added by ammonium sulfate
In, crush, cross 160 mesh sieves, obtain ammonium sulfate powder；By TPU, plasticizer, age resistor, mixed extract, modified glass-fiber, gather
Styrene, ammonium sulfate powder, nano-silver powder and dispersant are added in mixer, and 0.8 times of TPU mass is added into mixer
Water, 60min is stirred under conditions of rotating speed is 480r/min, mixture is obtained, mixture is moved into double screw extruder,
Extruded under conditions of being 220 DEG C in temperature, obtain blank, by blank casting film-forming, obtain keyboard protective film.The TPU is：Thermoplasticity
Elastic polyurethane body rubber.The plasticizer is dioctyl phthalate.The age resistor is antioxidant 4010NA.Described point
Powder is dispersant NNO.The silane coupler is silane resin acceptor kh-550.
Comparative example：The keyboard protective film in certain digital shop.
The gained of example 1 to 4 keyboard protective film and comparative example product are subjected to performance detection, specific detection method is as follows：
The method of sampling：20 buttons commonly used using the aseptic cotton carrier for being soaked with nertralizer to keyboard are sampled, and are inoculated with blood agar
Flat board, MRSA ID and MDRAB ID flat boards, observe cultivation results after being incubated 48h in 37 DEG C of incubators and carry out bacterium colony counting, record
Whether MRSA and MDRAB are detected.
Detection is divided into 3 stages, and before the 1st stage is cleaning, two all computor-keyboards of ICU are sampled；2nd stage
To intervene the stage, keyboard protective film is equipped with for all computor-keyboards, and formulates the standard practice instructions of diaphragm cleaning and sterilizing,
All keyboard protective films are asked to change and clean daily；3rd stage for cleaning after, replacing keyboard protective film using 3h after carry out
Sampling.
Specific testing result is as shown in table 1：
Table 1
From the testing result of table 1, present invention gained keyboard protective film has good antibiotic property.
Claims (5)
- A kind of 1. keyboard protective film, it is characterised in that：It is made up of the raw material of following parts by weight：35~45 parts of TPU3~5 parts of plasticizer2~4 parts of age resistor8~12 parts of mixed extract5~10 parts of mixed essential oil4~6 parts of modified glass-fiber15~20 parts of polystyrene2~5 parts of ammonium sulfate1~3 part of dispersant5~8 parts of nano-silver powderThe TPU is：TPUE rubber；The preparation method of the mixed extract：By tealeaves and granatum in mass ratio 3：1~3：2 mixing, and add argy wormwood and the tealeaves matter of 0.5~0.6 times of tea quality 2~4h is boiled in the water of 4~5 times of amount, heating, filters, and concentration, obtains mixed extract；The preparation method of the mixed essential oil is：By ginger oil and sage oil in mass ratio 1：2~1：5 mixing, and add the black pepper of 0.3~0.4 times of sage oil quality Oil, after being stirred, obtain mixed essential oil；The preparation method of the modified glass-fiber is：By glass fibre and water in mass ratio 1：8~1：12 mixing, and the silane for adding 0.4~0.6 times of glass fiber quality is even Join agent, after being stirred, add the nano titanium oxide of 0.2~0.4 times of glass fiber quality, sonic oscillation, filter, dry, Obtain modified glass-fiber；The preparation method of the keyboard protective film is：（1）Formed by raw material and weigh each component；（2）Ammonium sulfate is crushed, sieves, obtains ammonium sulfate powder, by TPU, plasticizer, age resistor, mixed extract, mixing essence Oil, modified glass-fiber, polystyrene, ammonium sulfate powder, nano-silver powder and dispersant are added in mixer, and into mixer The water of 0.5~0.8 times of TPU mass is added, after being stirred, mixture is obtained, mixture is extruded in double screw extruder, obtained Blank, by blank casting film-forming, obtain keyboard protective film.
- A kind of 2. keyboard protective film according to claim 1, it is characterised in that：The plasticizer is that phthalic acid two is pungent Any one in ester, di-n-octyl phthalate or dicyclohexyl phthalate.
- A kind of 3. keyboard protective film according to claim 1, it is characterised in that：The age resistor is antioxidant 4010NA, The mixture of any one or a few in antioxidant 264 or antioxidant 4010.
- A kind of 4. keyboard protective film according to claim 1, it is characterised in that：The dispersant is dispersant NNO, is disperseed Any one in agent 5040 or Dispersant MF.
- A kind of 5. keyboard protective film according to claim 1, it is characterised in that：The silane coupler is silane coupler Any one in KH-550, silane coupler KH-560 or Silane coupling reagent KH-570.
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| CN201711113628.2A CN107880525A (en) | 2017-11-13 | 2017-11-13 | A kind of keyboard protective film |
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| CN201711113628.2A CN107880525A (en) | 2017-11-13 | 2017-11-13 | A kind of keyboard protective film |
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