CN110903632A - Keyboard antibacterial fluorescent protective film and preparation method thereof - Google Patents
Keyboard antibacterial fluorescent protective film and preparation method thereof Download PDFInfo
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- CN110903632A CN110903632A CN201911122104.9A CN201911122104A CN110903632A CN 110903632 A CN110903632 A CN 110903632A CN 201911122104 A CN201911122104 A CN 201911122104A CN 110903632 A CN110903632 A CN 110903632A
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- protective film
- keyboard
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- antibacterial
- fluorescent protective
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- 230000001681 protective effect Effects 0.000 title claims abstract description 38
- 230000000844 anti-bacterial effect Effects 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- -1 rare earth aluminate Chemical class 0.000 claims abstract description 20
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 19
- 229920005862 polyol Polymers 0.000 claims abstract description 19
- 150000003077 polyols Chemical class 0.000 claims abstract description 19
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 12
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 12
- 239000004970 Chain extender Substances 0.000 claims abstract description 11
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 10
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 7
- 239000004611 light stabiliser Substances 0.000 claims abstract description 4
- 238000003490 calendering Methods 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 24
- 239000011259 mixed solution Substances 0.000 claims description 12
- 239000011541 reaction mixture Substances 0.000 claims description 12
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 6
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical group [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 6
- 235000013539 calcium stearate Nutrition 0.000 claims description 6
- 239000008116 calcium stearate Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 6
- 230000003179 granulation Effects 0.000 claims description 6
- 238000004898 kneading Methods 0.000 claims description 6
- 239000004332 silver Substances 0.000 claims description 6
- 229910052709 silver Inorganic materials 0.000 claims description 6
- SHLNMHIRQGRGOL-UHFFFAOYSA-N barium zinc Chemical compound [Zn].[Ba] SHLNMHIRQGRGOL-UHFFFAOYSA-N 0.000 claims description 5
- 239000003381 stabilizer Substances 0.000 claims description 5
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical compound C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 claims description 4
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 4
- 229950000688 phenothiazine Drugs 0.000 claims description 4
- 229940111630 tea tree oil Drugs 0.000 claims description 4
- 239000010677 tea tree oil Substances 0.000 claims description 4
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 claims description 3
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 3
- 239000001506 calcium phosphate Substances 0.000 claims description 3
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 3
- 235000011010 calcium phosphates Nutrition 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 2
- PMMYEEVYMWASQN-IMJSIDKUSA-N cis-4-Hydroxy-L-proline Chemical compound O[C@@H]1CN[C@H](C(O)=O)C1 PMMYEEVYMWASQN-IMJSIDKUSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 241000894006 Bacteria Species 0.000 abstract description 4
- 230000003203 everyday effect Effects 0.000 abstract description 4
- 241000588724 Escherichia coli Species 0.000 abstract description 3
- 241000235342 Saccharomycetes Species 0.000 abstract description 3
- 241000191967 Staphylococcus aureus Species 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 2
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/664—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
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- 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
- C08J2375/06—Polyurethanes from polyesters
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- C08K2003/0806—Silver
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- C08K3/32—Phosphorus-containing compounds
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Abstract
The invention discloses an antibacterial fluorescent protective film for a keyboard, which is prepared from the following components in parts by weight: 30-65 parts of polymer polyol, 8-18 parts of chain extender, 0.1-0.6 part of antioxidant, 25-30 parts of toluene diisocyanate, 0.3-0.5 part of lubricant, 0.2-0.5 part of antibacterial agent, 4-8 parts of rare earth aluminate noctilucent powder and 0.1-0.4 part of light stabilizer. The invention also discloses a preparation method of the protective film, and the antibacterial agent is added into the protective film of the keyboard, so that people can effectively inhibit common harmful bacteria such as saccharomycetes, escherichia coli, staphylococcus aureus and the like when contacting the keyboard every day. In addition, the keyboard film is added with the rare earth aluminate noctilucent powder, so that the keyboard film has good antistatic effect and does not lose the noctilucent function.
Description
Technical Field
The invention belongs to the technical field of computer input equipment, and particularly relates to an antibacterial fluorescent protective film for a keyboard and a preparation method of the protective film.
Background
The keyboard is a common computer input device, but bacteria are easily accumulated on the keyboard due to the fact that the keyboard is contacted with hands every day, the keyboard protective film on the market at present is only made of simple silica gel materials and cannot inhibit bacterial breeding, and meanwhile, the existing keyboard protective film does not have antistatic performance although containing fluorescent particles, so that an antibacterial fluorescent protective film capable of inhibiting bacterial breeding and resisting static electricity is urgently needed at present.
Disclosure of Invention
The invention aims to provide an antibacterial fluorescent protective film for a keyboard, and solves the problems that the keyboard film in the prior art cannot inhibit bacterial breeding and does not have a fluorescent anti-static function.
The invention also aims to provide a preparation method of the protective film.
The technical scheme adopted by the invention is that the keyboard antibacterial fluorescent protective film is prepared from the following components in parts by weight: 30-65 parts of polymer polyol, 8-18 parts of chain extender, 0.1-0.6 part of antioxidant, 25-30 parts of toluene diisocyanate, 0.3-0.5 part of lubricant, 0.2-0.5 part of antibacterial agent, 4-8 parts of rare earth aluminate noctilucent powder and 0.1-0.4 part of light stabilizer.
The invention is also characterized in that:
the polymer polyol is polybutylene adipate.
The antioxidant is one of phenylenediamine antioxidant, diphenylamine antioxidant, phenyl- α -naphthylamine antioxidant and phenothiazine antioxidant.
The antibacterial agent is one of silver-loaded calcium phosphate, silver-loaded glass beads and tea tree oil.
The chain extender is one or more than one of propylene glycol, 1, 4-butanediol, dimethylene phenyl glycol or 1, 4-cyclohexanediol.
The lubricant is calcium stearate.
The invention adopts another technical scheme that a preparation method of the keyboard antibacterial fluorescent protective film adopts the keyboard antibacterial fluorescent protective film, and comprises the following specific steps:
step 1: prefabricated building block
Adding 0.1-0.6 part of antioxidant, 0.1-0.4 part of light stabilizer, 0.2-0.5 part of antibacterial agent, 0.3-0.5 part of lubricant and 4-8 parts of rare earth aluminate noctilucent powder into 30-65 parts of polymer polyol for mixing to obtain a polymer polyol mixed solution;
step 2: mixing
Measuring the polymer polyol mixed solution obtained in the step 1 and 25-30 parts of toluene diisocyanate by a mass flow meter, and filling the mixture into a single-screw mixing device for mixing to obtain a primary reaction mixture;
and step 3: reaction of
And (3) pouring the reaction mixture obtained in the step (2) and 8-18 parts of chain extender into a co-rotating double-screw continuous reaction extruder for reaction, pouring the mixture obtained by granulation into a casting extruder for blending and extrusion to obtain an extrudate, calendering the extrudate, cooling to room temperature, drawing and coiling to obtain the keyboard antibacterial fluorescent protective film.
The invention is also characterized in that:
in the step 3, the reaction temperature is 120-240 ℃, the pressure is 3-6MPa, the screw rotation speed is 240-320rpm, the kneading frequency is 5-10 times/S, and the screw length-diameter ratio is 46.
The thickness of the keyboard antibacterial fluorescent protective film is 0.2-0.5 mm.
The invention has the beneficial effects that:
the antibacterial keyboard protective film manufactured by the invention has the advantages that the antibacterial agent is added into the keyboard protective film, so that people can effectively inhibit common harmful bacteria such as saccharomycetes, escherichia coli, staphylococcus aureus and the like when contacting the keyboard every day. In addition, the keyboard film is added with the rare earth aluminate noctilucent powder, so that the keyboard film has good antistatic effect and does not lose the noctilucent function.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example 1
Firstly, 0.1 part of phenylenediamine antioxidant is added; 0.1 part of barium zinc stabilizer; 0.2 parts of tea tree oil; 0.3 part of calcium stearate; adding 4 parts of rare earth aluminate noctilucent powder into 30 parts of poly-butanediol adipate, and mixing to obtain a polymer polyol mixed solution; then pouring the polymer polyol mixed solution and 25 parts of toluene diisocyanate into a single-screw mixing device for mixing after being measured by a mass flow meter to obtain a primary reaction mixture; then pouring the reaction mixture and 8 parts of chain extender propylene glycol into a co-rotating twin-screw continuous reaction extruder for reaction, wherein the reaction temperature is 120 ℃, the pressure is 3MPa, the screw rotating speed is 240rpm, the kneading frequency is 6 times/S, and the length-diameter ratio of the screw is 46; pouring the mixture obtained by granulation into a casting extruder for blending extrusion to obtain an extrudate, and carrying out calendering on the extrudate, wherein the calendering is to send the extrudate into a three-stage calendering roller, the temperature of a first calendering roller is set to be 200 ℃, the temperature of a second calendering roller is set to be 160 ℃, and the temperature of a third calendering roller is set to be 140 ℃; cooling to room temperature, and dragging and coiling at the speed of 1m/min to obtain the keyboard antibacterial protective film with the thickness of 0.2 mm.
Example 2
The preparation method comprises the steps of firstly adding 0.3 part of phenyl- α -naphthylamine antioxidant, 0.2 part of barium zinc stabilizer, 0.3 part of silver-loaded calcium phosphate, 0.4 part of calcium stearate and 6 parts of rare earth aluminate noctilucent powder into 40 parts of poly-adipate butanediol to be mixed to obtain a polymer polyol mixed solution, then pouring the polymer polyol mixed solution and 26 parts of toluene diisocyanate into a single-screw mixing device to be mixed after the mass flow meter measurement to obtain a primary reaction mixture, then pouring the reaction mixture and 12 parts of chain extender 1, 4-butanediol into a co-rotating double-screw continuous reaction extruder to react, wherein the reaction temperature is 160 ℃, the pressure is 4MPa, the screw rotation speed is 280rpm, the kneading frequency is between 7 times/S, the screw length-diameter ratio is 46, pouring the mixture obtained through granulation into a casting extruder to be subjected to blending extrusion to obtain an extrudate, feeding the extrudate into a three-stage calendering roller, wherein the temperature of a first calendering roller is set to be 200 ℃, the temperature of a third calendering roller is set to be 160 ℃, the length-diameter ratio of the third calendering roller is set to be 140 ℃, cooling is carried out to be a keyboard, the keyboard is set to be cooled to be a keyboard, the thickness is set to be the thickness of a protective film, and the thickness of.
Example 3
Firstly, 0.4 part of phenothiazine antioxidant is added; 0.3 part of barium zinc stabilizer; 0.4 part of silver-loaded glass microspheres; 0.4 part of calcium stearate; adding 8 parts of rare earth aluminate noctilucent powder into 60 parts of polybutylene adipate and mixing to obtain a polymer polyol mixed solution; then pouring the polymer polyol mixed solution and 26 parts of toluene diisocyanate into a single-screw mixing device for mixing after being measured by a mass flow meter to obtain a primary reaction mixture; then pouring the reaction mixture and 15 parts of chain extender dimethylene phenyl glycol into a co-rotating twin-screw continuous reaction extruder for reaction, wherein the reaction temperature is 200 ℃, the pressure is 6MPa, the screw rotating speed is 320rpm, the kneading frequency is 8 times/S, and the length-diameter ratio of the screw is 46; pouring the mixture obtained by granulation into a casting extruder for blending extrusion to obtain an extrudate, and carrying out calendering on the extrudate, wherein the calendering is to send the extrudate into a three-stage calendering roller, the temperature of a first calendering roller is set to be 200 ℃, the temperature of a second calendering roller is set to be 160 ℃, and the temperature of a third calendering roller is set to be 140 ℃; cooling to room temperature, and dragging and coiling at the speed of 1m/min to obtain the keyboard antibacterial protective film with the thickness of 0.5 mm.
Example 4
Firstly, 0.6 part of phenothiazine antioxidant is added; 0.4 part of barium zinc stabilizer; 0.5 part of tea tree oil; 0.5 part of calcium stearate; adding 8 parts of rare earth aluminate noctilucent powder into 65 parts of polybutylene adipate for mixing to obtain a polymer polyol mixed solution; then pouring the polymer polyol mixed solution and 30 parts of toluene diisocyanate into a single-screw mixing device for mixing after being measured by a mass flow meter to obtain a primary reaction mixture; then pouring the reaction mixture and 18 parts of chain extender dimethylene phenyl glycol into a co-rotating twin-screw continuous reaction extruder for reaction, wherein the reaction temperature is 240 ℃, the pressure is 6MPa, the screw rotating speed is 320rpm, the kneading frequency is 10 times/S, and the length-diameter ratio of the screw is 46; pouring the mixture obtained by granulation into a casting extruder for blending extrusion to obtain an extrudate, and carrying out calendering on the extrudate, wherein the calendering is to send the extrudate into a three-stage calendering roller, the temperature of a first calendering roller is set to be 200 ℃, the temperature of a second calendering roller is set to be 160 ℃, and the temperature of a third calendering roller is set to be 140 ℃; cooling to room temperature, and dragging and coiling at the speed of 1m/min to obtain the keyboard antibacterial protective film with the thickness of 0.5 mm.
The protective films obtained in examples 1 to 4 were subjected to performance tests, and the test results were as follows:
TABLE 1
TABLE 2
The test temperature is 23.5 ℃, and all the antibacterial rates are over 99% as can be seen through antibacterial experiments, and the antibacterial keyboard protective film manufactured by the invention can effectively inhibit common harmful bacteria such as saccharomycetes, escherichia coli, staphylococcus aureus and the like when people contact the keyboard every day by adding the antibacterial agent into the keyboard protective film. In addition, the keyboard film is added with the rare earth aluminate noctilucent powder, so that the keyboard film has good antistatic effect and does not lose the noctilucent function.
Claims (9)
1. The antibacterial fluorescent protective film for the keyboard is characterized by being prepared from the following components in parts by weight: 30-65 parts of polymer polyol, 8-18 parts of chain extender, 0.1-0.6 part of antioxidant, 25-30 parts of toluene diisocyanate, 0.3-0.5 part of lubricant, 0.2-0.5 part of antibacterial agent, 4-8 parts of rare earth aluminate noctilucent powder and 0.1-0.4 part of barium zinc stabilizer.
2. The keyboard antibacterial fluorescent protective film according to claim 1, wherein the polymer polyol is polybutylene adipate.
3. The antibacterial fluorescent protective film for keyboards as claimed in claim 1, wherein said antioxidant is one of phenylenediamine-based antioxidants, diphenylamine-based antioxidants, phenyl- α -naphthylamine-based antioxidants and phenothiazine-based antioxidants.
4. The antibacterial fluorescent protective film for keyboards as claimed in claim 1, wherein said antibacterial agent is one of silver-loaded calcium phosphate, silver-loaded glass beads and tea tree oil.
5. The antibacterial fluorescent protective film for keyboards as claimed in claim 1, wherein said chain extender is one or more of propylene glycol, 1, 4-butanediol, dimethylene phenyl glycol or 1, 4-cyclohexanediol.
6. The keyboard antibacterial fluorescent protective film according to claim 1, wherein the lubricant is calcium stearate.
7. A preparation method of an antibacterial fluorescent protective film for a keyboard is characterized in that the antibacterial fluorescent protective film for the keyboard of any one of claims 1 to 6 is adopted, and the preparation method comprises the following specific steps:
step 1: prefabricated building block
Adding 0.1-0.6 part of antioxidant, 0.1-0.4 part of light stabilizer, 0.2-0.5 part of antibacterial agent, 0.3-0.5 part of lubricant and 4-8 parts of rare earth aluminate noctilucent powder into 30-65 parts of polymer polyol for mixing to obtain a polymer polyol mixed solution;
step 2: mixing
Measuring the polymer polyol mixed solution obtained in the step 1 and 25-30 parts of toluene diisocyanate by a mass flow meter, and filling the mixture into a single-screw mixing device for mixing to obtain a primary reaction mixture;
and step 3: reaction of
And (3) pouring the reaction mixture obtained in the step (2) and 8-18 parts of chain extender into a co-rotating double-screw continuous reaction extruder for reaction, pouring the mixture obtained by granulation into a casting extruder for blending and extrusion to obtain an extrudate, calendering the extrudate, cooling to room temperature, drawing and coiling to obtain the keyboard antibacterial fluorescent protective film.
8. The method for preparing the antibacterial fluorescent protective film for keyboards as claimed in claim 7, wherein the reaction temperature in step 3 is 120-240 ℃, the pressure is 3-6MPa, the screw rotation speed is 240-320rpm, the kneading frequency is 5-10/S, and the screw length-diameter ratio is 46.
9. The method for preparing the keyboard antibacterial fluorescent protective film according to claim 7, wherein the thickness of the keyboard antibacterial fluorescent protective film is 0.2-0.5 mm.
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