CN106987082A - A kind of antibiotic plastic suitable for keyboard - Google Patents
A kind of antibiotic plastic suitable for keyboard Download PDFInfo
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- CN106987082A CN106987082A CN201710192532.3A CN201710192532A CN106987082A CN 106987082 A CN106987082 A CN 106987082A CN 201710192532 A CN201710192532 A CN 201710192532A CN 106987082 A CN106987082 A CN 106987082A
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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
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a kind of antibiotic plastic suitable for keyboard, belong to plastic products technology field.A kind of antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：40 65 parts of 100 120 parts of ABS matrix resins, 15 25 parts of makrolon, 2 10 parts of ethylene acrylic acid co polymer, 15 parts of polyvinyl alcohol, 2 10 parts of ethylene propylene diene rubber, 48 parts of antibacterial matrices, 10 15 parts of filler, 5 12 parts of dispersant, 0.2 0.6 parts of antioxidant, 0.3 0.7 parts of coupling agent, 0.2 0.6 parts of stabilizer and compatilizer.Antibacterial matrices are used in the keyboard case material of the present invention, broad-spectrum antibacterial property, antimicrobial sustained-release and the weatherability of plastics is improved, improves the mechanical property of antibiotic plastic.
Description
Technical field
The invention belongs to plastic products technology field, and in particular to a kind of antibiotic plastic suitable for keyboard.
Background technology
With Informatization Development, computer is popularized rapidly, and market survey is found, in some big public occasions of amount of flow,
Such as Internet bar, library, hospital etc., computer is as a kind of common equipment, and utilization rate is very high, but relevant unit lacks mostly
Effective cleaning disinfectant measure, the sanitary precaution consciousness of user in this regard is also very weak, therefore, computer (notebook) key
Disk turns into the source of the institute sheltered evil people and countenance evil practices and bacterial infection.If using the plastics with antibacterial functions, bacterium can be suppressed and existed
The growth of remote control face, reduction bacterium is to human injury.
Bacterium includes bacterium and mould, and bacterium includes gram-positive bacteria and Gram-negative bacteria again.Research finds that silver can
, can be with penetration cell film, into microorganism when principle is that silver touches the cell of microorganism effectively to suppress the growth of bacterium
It is interior, the activity of Microbe synthesis enzyme is reacted and destroyed with the thin base of microbial body internal protein, causes microorganism to lose and divides
Split multiplication capacity and dead.So if adding the silver-colored composition of activity in the plastic, you can to realize antibacterial effect, and the grain of silver
Footpath is smaller, and anti-microbial property is better.But the weatherability of traditional silver-containing antibacterial agent is poor, addition easily causes antibiotic property in ABS
It can decline and even fail, and common keyboard plastics machinery intensity is not high, is easily broken off, deforms.
The content of the invention
It is an object of the invention to overcome the shortcoming of above-mentioned technical problem there is provided a kind of antibiotic plastic suitable for keyboard,
The plastics can solve the problem that the existing keyboard antibacterial term of validity is shorter, and poor durability, weatherability are poor, antibacterial stability is relatively low lacks
Fall into, and with stronger mechanical property.
Realize that the technical scheme of the object of the invention is as follows：
A kind of antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：ABS matrix resins 100-
120 parts, 15-25 parts of makrolon, 2-10 parts of ethylene acrylic acid co polymer, 1-5 parts of polyvinyl alcohol, ethylene propylene diene rubber 2-10
Part, 4-8 parts of antibacterial matrices, 10-15 parts of filler, 5-12 parts of dispersant, 0.2-0.6 parts of antioxidant, 0.3-0.7 parts of coupling agent,
40-65 parts of 0.2-0.6 parts of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.2-0.8：
0.1-0.6：0.1-0.4 weight proportion weighs standby；
B, the zeolite powder is heated to 350-450 DEG C, the heat time is 1-2h, is down to after room temperature into the zeolite powder
The aseptic deionized water of 2-3 times of weight is added, is stirred, while being 4-6 with the pH value of vinegar acid-conditioning solution, at 30-40 DEG C
Stirred in water bath 10-35min, then continue to stir 5-15min toward the nano titanium oxide silver is added in zeolite powder solution, obtain
Mixed solution A；
C, the aseptic deionized water that the four acicular type zinc oxide crystal whisker and organopolysiloxane are put into 0.5-1.5 times of weight
In, 10-35min is stirred in 30-50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30-40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B
Continue to stir 15-30min in the mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 45-55 DEG C, vacuum is 0.05-0.09MPa, the time that is concentrated under reduced pressure, for 10-35min, obtains concentrate C, by the concentration
Thing C adds double screw extruder, is 150-230 DEG C in head temperature, and screw speed is extrusion under conditions of 300-600r/min,
It is water cooled but, then after drying and packaging, obtain the antibacterial matrices.
Further, the antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：ABS matrixes
105-115 parts of resin, 17-23 parts of makrolon, 4-9 parts of ethylene acrylic acid co polymer, 2-4 parts of polyvinyl alcohol, ethylene-propylene-diene monomer
3-8 parts of glue, 5-7 parts of antibacterial matrices, 11-14 parts of filler, 6-10 parts of dispersant, 0.3-0.5 parts of antioxidant, coupling agent 0.4-
0.6 part, stabilizer 0.3-0.6 is prepared from：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.3-0.7：
0.2-0.5：0.2-0.3 weight proportion weighs standby；
B, the zeolite powder is heated to 350-450 DEG C, the heat time is 1-2h, is down to after room temperature into the zeolite powder
The aseptic deionized water of 2.2-2.8 times of weight is added, is stirred, while be 4.5-5.5 with the pH value of vinegar acid-conditioning solution,
30-40 DEG C of stirred in water bath 10-35min, then continue to stir 5- toward the nano titanium oxide silver is added in zeolite powder solution
15min, obtains mixed solution A；
C, the aseptic deionized water that the four acicular type zinc oxide crystal whisker and organopolysiloxane are put into 0.8-1.3 times of weight
In, 10-35min is stirred in 30-50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30-40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B
Continue to stir 15-30min in the mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 45-55 DEG C, vacuum is 0.05-0.09MPa, the time that is concentrated under reduced pressure, for 10-35min, obtains concentrate C, by the concentration
Thing C adds double screw extruder, is 150-230 DEG C in head temperature, and screw speed is extrusion under conditions of 300-600r/min,
It is water cooled but, then after drying and packaging, obtain the antibacterial matrices.
Further, the antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：ABS matrixes
110 parts of resin, 20 parts of makrolon, 6 parts of ethylene and acrylic acid copolymer, 3 parts of polyvinyl alcohol, 5 parts of ethylene propylene diene rubber, antibacterial
50 parts of 6 parts of master batch, 12 parts of filler, 8 parts of dispersant, 0.4 part of antioxidant, 0.5 part of coupling agent, 0.4 part of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.5：0.4：
0.25 weight proportion weighs standby；
B, the zeolite powder is heated to 350-450 DEG C, the heat time is 1-2h, is down to after room temperature into the zeolite powder
The aseptic deionized water of 2.5 times of weight is added, is stirred, while being 5 with the pH value of vinegar acid-conditioning solution, at 30-40 DEG C
Stirred in water bath 10-35min, then continue to stir 5-15min toward the nano titanium oxide silver is added in zeolite powder solution, obtain mixed
Close solution A；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 1.2 times of weight,
10-35min is stirred in 30-50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30-40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B
Continue to stir 15-30min in the mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 45-55 DEG C, vacuum is 0.05-0.09MPa, the time that is concentrated under reduced pressure, for 10-35min, obtains concentrate C, by the concentration
Thing C adds double screw extruder, is 150-230 DEG C in head temperature, and screw speed is extrusion under conditions of 300-600r/min,
It is water cooled but, then after drying and packaging, obtain the antibacterial matrices.
Further, the filler is talcum powder, calcium carbonate or attapulgite.
Further, the dispersant is that Tissuemat E, titanium dioxide and maleic anhydride inoculated polypropylene wax are pressed into 1:
0.5-0.8：0.2-0.5 weight proportion is mixed.
Further, the antioxidant is the 6- tert-butyl group -3- methylphenols or 2,4-DTBP；It is described anti-
Oxidant can catch reactive radical species, interrupt chain reaction, delay the oxidizing process and speed of plastics.
Further, the coupling agent is silane coupler.
Further, the stabilizer is lead sulfate tribasic, dibasic phosphite lead, lead stearate or O-phthalic
Lead plumbate；The stabilizer can increase the stability of plastics, can slow down reaction, keep chemical balance, reduce surface tension, prevent
Only light, thermal decomposition or oxidation Decomposition etc. are acted on.
Further, the compatilizer is ABS-g-MAH.
The preparation method of above-mentioned plastics can be prepared using industry universal method, for example：Each original is weighed by proportioning
Material, after being well mixed, melting mixing, extruding pelletization obtain the antibiotic plastic for being applied to keyboard.
Part material used in the present invention is described as follows：
ABS matrix resins refer to acrylonitrile-butadiene-styrene copolymer, and ABS is Acrylonitrile Butadiene
Styrene acronym, it is a kind of intensity height, good toughness, thermoplastics type's high polymer material easily processed into type, due to
Its high comprehensive performance, purposes is mainly used as engineering material than wide, it can also be used to family life apparatus.
Makrolon, abbreviation PC is the high molecular polymer containing carbonate group in strand, and makrolon is colourless
Bright, heat-resisting, shock resistance is fire-retardant BI grades, there is good mechanical performance in commonly used temperature.With performance close to poly- methyl-prop
E pioic acid methyl ester is compared, and the impact resistance of makrolon is good, and refractive index is high, good processability, and insulating properties is high.
Ethylene acrylic acid co polymer, abbreviation EAA is a kind of polymer with thermoplasticity and high caking property, due to hydroxyl
The presence of group and the effect of hydrogen bond, the crystallization of polymer are suppressed, and the linear of main chain is destroyed, therefore improves EAA's
The transparency and toughness.
Polyvinyl alcohol is organic matter volume, and white plates, cotton-shaped or pulverulent solids are tasteless, pollution-free.Can be at 80-90 DEG C
Dissolved in water.Polyvinyl alcohol is important industrial chemicals, there is good wearability, and cohesive force is extremely strong, oil resistant and chemicals.
Ethylene propylene diene rubber is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon.Ethylene propylene diene rubber has low
The high fillibility of density, resistance to ag(e)ing and caking property etc..
Zeolite powder, which is that natural Zeolite Rock is levigate, to be formed, and color is white.Zeolite has adsorptivity, ion exchangeable, urged
Change and the performance such as acidproof heat-proof, therefore be widely used as adsorbent, ion-exchanger and catalyst, it can also be used to gas it is dry
In terms of dry, purification and sewage disposal.
The composite effect of photocatalysis antibacterial function and silver ion for sterilization of the nano titanium oxide silver with titanium dioxide, it is former
Manage and be：Silver will be carried in nano titanium oxide, silver ion is embedded in titanium dioxide lattice, it is electricity to constitute with titanium dioxide and inertia silver
The short-circuit micro cell of pole, the hole produced by titanium dioxide electrodes is by bacterium and oxidation operation, and silver ion is having for electronics
Titanium component reduction will be aoxidized by imitating acceptor, so as to reduce the compound of hole and electronics, the photocatalysis for significantly improving titanium dioxide is anti-
Answer efficiency.On the other hand, silver ion can be stabilized in titanium dioxide lattice, silver-colored sustained release during achievable use, together
When also enhance light contact light dark place antibiotic property.Nano titanium oxide silver has antibacterial wide spectrum, sterilizing rate height, is difficult production
Raw drug-fast feature, 50 nanometers of its granularity light rain is splendid to the sterilization effect of Escherichia coli, gold-coloured staphylococci.
The antibacterial ring width of four acicular type zinc oxide crystal whisker is 5.75mm, due to the particularity of structure, shows it special
Sophisticated nano active, reunion will not be produced, be dispersible nano material, be conducive to the performance of its anti-microbial property, with height
Effect, wide spectrum, lasting antibacterial and depollution of environment effect.
Organopolysiloxane is also known as silicone, lazy with nontoxic, tasteless, good biocompatibility, without hypersensitive, physiology
Property, high-low temperature resistant, non-ignitable, good permeability, unique solution permeability and physicochemical stability the features such as.
Tissuemat E is white plates or particle, and dispersant is done in color masterbatch processing, is had with ABS matrix resins fine
Intermiscibility, and with very excellent external lubrication and internal lubrication effect；It is female as the heavy colour of a variety of thermoplastic resins
Expect dispersant and filling master batch, the lubrication dispersing agent of degradable master batch, HDPE, PP and PVC etc. processing characteristics, surface light can be improved
Pool property, lubricity and heat endurance.
Titanium dioxide is the odorless, tasteless white powder of soft texture, and its covering power is big, strong coloring force and good dispersion, extensively
It is general to be used in plastic manufacturing industry.
Maleic anhydride inoculated polypropylene wax, produce filled polypropylene when add maleic anhydride inoculated polypropylene, can be very big
Ground improves filler and polypropylene compatibility and the dispersiveness of filler.Therefore can effectively reinforcer it is scattered in polypropylene, from
And improve stretching and the impact strength of filled polypropylene.It has stronger phase interaction with antioxidant, coupling agent, stabilizer etc.
With antioxidant, coupling agent, stabilizer etc. can be promoted scattered in ABS matrix resins.
The 6- tert-butyl group -3- methylphenols are as plastic antioxidants, and it is to catch reactive radical species that it, which is acted on, makes chain reaction
Interrupt, it is therefore an objective to delay the oxidizing process and speed of plastics.
2,4-DTBP is mainly for the manufacture of natural rubber and rubber polymer age resistor, plastics antioxidant, fuel
Stabilizer etc..
Lead sulfate tribasic is white powder, there is excellent heat resistance and electrical insulating property, and light resistance is good, is suitable for high temperature and adds
Work.
Dibasic phosphite lead, to micro- brown grain powder, there is very prominent weatherability, electrical insulating property to be white
And stability, the ability with inoxidizability and shielding ultraviolet rays.
Lead stearate is white powder, water insoluble, is dissolved in hot ethanol, benzene and turpentine oil, is heated in organic solvent molten
Solve and turn into jelly after cooling, meet strong acid and resolve into stearic acid and corresponding salt, there is hygroscopicity, lead stearate has well
Lubricity and photo and thermal stability.
Lead phthalate has good heat endurance and electric insulating quality.
ABS-g-MAH is that maleic anhydride grafted ABS resin compatilizer is made by reactive extrusion technology, passes through the horse of introducing
Carry out acid anhydrides active group, the compatibility of plastic raw materials can be improved, improve the impact strength and tensile strength of plastics.
Compared with prior art, the present invention has the advantages that：The present invention with the addition of antibacterial for the plastics of keyboard
Master batch, makes obtained plastics have good antibacterial functions, consumption is seldom with regard to that can play obvious antibacterial action.With four needle-like oxygen
It is antibacterial matrices made from primary raw material to change zinc whisker, nano titanium oxide silver, organopolysiloxane and zeolite, can be killed thin
Bacterium, virus, and elimination bacterium, the residue of virus can be thoroughly decomposed using photocatalysis；The antibacterial matrices particle is carefully list
Dispersing nanoparticles, uniform particle sizes, strong antibacterial, antibacterial range is wide, durable antibacterial effect, and antibacterial matrices rate of release is stable
It is long-acting.
The present invention is using ABS matrix resins as body material, with higher impact strength, add appropriate makrolon,
Ethylene acrylic acid co polymer, polyvinyl alcohol and ethylene propylene diene rubber, can further improve the combination property of the plastics of the present invention；
Add component and ABS matrix resins, makrolon, the second such as filler, dispersant, antioxidant, coupling agent, stabilizer and compatilizer
Synergistic function occurs for the components such as alkene acrylic copolymer, polyvinyl alcohol, ethylene propylene diene rubber, antibacterial matrices, improves each
Compatibility between raw material, makes the mechanical property of the plastics of the present invention improve therewith, improves impact strength, and products obtained therefrom
Not only antibacterial effect is not disturbed by ultraviolet, also has good inoxidizability with the matrix material of plastics, with the stabilizer
It is used in combination, the advantage of additive property can be produced, improves its heat resisting temperature and the stability to ultraviolet.
Embodiment
The present invention is described in detail with reference to specific embodiment.Ratio that this powder is previously mentioned, " part ", if do not had
Special mark, is defined by weight.
Embodiment 1
A kind of antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：100 parts of ABS matrix resins,
15 parts of makrolon, 2 parts of ethylene acrylic acid co polymer, 1 part of polyvinyl alcohol, 2 parts of ethylene propylene diene rubber, 4 parts of antibacterial matrices, filler
40 parts of 10 parts, 5 parts of dispersant, 0.2 part of antioxidant, 0.3 part of coupling agent, 0.2 part of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.2：0.1：
0.1 weight proportion weighs standby；
B, the zeolite powder is heated to 350 DEG C, the heat time is 1h, is down to after room temperature and adds 2 into the zeolite powder
The aseptic deionized water of times of weight, stirs, while being 4 with the pH value of vinegar acid-conditioning solution, in 30 DEG C of stirred in water bath
10min, then continue to stir 5min toward the nano titanium oxide silver is added in zeolite powder solution, obtain mixed solution A；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 0.5 times of weight,
10min is stirred in 30 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 15min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 45 DEG C, vacuum is 0.05MPa, the time that is concentrated under reduced pressure, for 10min, obtains concentrate C, the concentrate C is added into double spiral shells
Bar extruder, head temperature be 150 DEG C, screw speed be 300r/min under conditions of extrude, it is water cooled but, then by drying
After packaging, the antibacterial matrices are obtained.
Wherein, the filler is talcum powder；The dispersant is to be grafted Tissuemat E, titanium dioxide and maleic anhydride to gather
Propylene wax presses 1:0.5：0.2 weight proportion is mixed；The antioxidant is the 6- tert-butyl group -3- methylphenols；The idol
Connection agent is silane coupler；The stabilizer is lead sulfate tribasic；The compatilizer is ABS-g-MAH.
Embodiment 2
A kind of antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：120 parts of ABS matrix resins,
25 parts of makrolon, 10 parts of ethylene acrylic acid co polymer, 5 parts of polyvinyl alcohol, 10 parts of ethylene propylene diene rubber, 8 parts of antibacterial matrices, fill out
65 parts of 15 parts of material, 12 parts of dispersant, 0.6 part of antioxidant, 0.7 part of coupling agent, 0.6 part of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.8：0.6：
0.4 weight proportion weighs standby；
B, the zeolite powder is heated to 450 DEG C, the heat time is 2h, is down to after room temperature and adds 3 into the zeolite powder
The aseptic deionized water of times of weight, stirs, while being 6 with the pH value of vinegar acid-conditioning solution, in 40 DEG C of stirred in water bath
35min, then continue to stir 15min toward the nano titanium oxide silver is added in zeolite powder solution, obtain mixed solution A；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 1.5 times of weight,
35min is stirred in 50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 30min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 55 DEG C, vacuum is 0.09MPa, the time that is concentrated under reduced pressure, for 35min, obtains concentrate C, the concentrate C is added into double spiral shells
Bar extruder, head temperature be 230 DEG C, screw speed be 600r/min under conditions of extrude, it is water cooled but, then by drying
After packaging, the antibacterial matrices are obtained.
Wherein, the filler is calcium carbonate；The dispersant is to be grafted Tissuemat E, titanium dioxide and maleic anhydride to gather
Propylene wax presses 1:0.8：0.5 weight proportion is mixed；The antioxidant is 2,4- DI-tert-butylphenol compounds；The coupling
Agent is silane coupler；The stabilizer is dibasic phosphite lead；The compatilizer is ABS-g-MAH.
Embodiment 3
A kind of antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：105 parts of ABS matrix resins,
17 parts of makrolon, 4 parts of ethylene acrylic acid co polymer, 2 parts of polyvinyl alcohol, 3 parts of ethylene propylene diene rubber, 5 parts of antibacterial matrices, filler
45 parts of 11 parts, 6 parts of dispersant, 0.3 part of antioxidant, 0.4 part of coupling agent, 0.3 part of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.3：0.2：
0.2 weight proportion weighs standby；
B, the zeolite powder is heated to 350 DEG C, the heat time is 1h, is down to after room temperature and is added into the zeolite powder
The aseptic deionized water of 2.2 times of weight, stirs, while being 4.5 with the pH value of vinegar acid-conditioning solution, in 30 DEG C of water-bath
10min is stirred, then continues to stir 5min toward the nano titanium oxide silver is added in zeolite powder solution, mixed solution A is obtained；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 0.8 times of weight,
10min is stirred in 30 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 15min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 45 DEG C, vacuum is 0.05MPa, the time that is concentrated under reduced pressure, for 10min, obtains concentrate C, the concentrate C is added into double spiral shells
Bar extruder, head temperature be 150 DEG C, screw speed be 300r/min under conditions of extrude, it is water cooled but, then by drying
After packaging, the antibacterial matrices are obtained.
Wherein, the filler is attapulgite；The dispersant is to be grafted Tissuemat E, titanium dioxide and maleic anhydride
Polypropylene wax presses 1:0.5：0.2 weight proportion is mixed；The antioxidant is the 6- tert-butyl group -3- methylphenols；It is described
Coupling agent is silane coupler；The stabilizer is lead phthalate；The compatilizer is ABS-g-MAH.
Embodiment 4
A kind of antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：115 parts of ABS matrix resins,
23 parts of makrolon, 9 parts of ethylene acrylic acid co polymer, 4 parts of polyvinyl alcohol, 8 parts of ethylene propylene diene rubber, 7 parts of antibacterial matrices, filler
60 parts of 14 parts, 10 parts of dispersant, 0.5 part of antioxidant, 0.6 part of coupling agent, 0.5 part of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.7：0.5：
0.3 weight proportion weighs standby；
B, the zeolite powder is heated to 450 DEG C, the heat time is 2h, is down to after room temperature and is added into the zeolite powder
The aseptic deionized water of 2.8 times of weight, stirs, while being 5.5 with the pH value of vinegar acid-conditioning solution, in 40 DEG C of water-bath
35min is stirred, then continues to stir 15min toward the nano titanium oxide silver is added in zeolite powder solution, mixed solution A is obtained；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 1.3 times of weight,
35min is stirred in 50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 30min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 55 DEG C, vacuum is 0.09MPa, the time that is concentrated under reduced pressure, for 35min, obtains concentrate C, the concentrate C is added into double spiral shells
Bar extruder, head temperature be 230 DEG C, screw speed be 600r/min under conditions of extrude, it is water cooled but, then by drying
After packaging, the antibacterial matrices are obtained.
Wherein, the filler is talcum powder；The dispersant is to be grafted Tissuemat E, titanium dioxide and maleic anhydride to gather
Propylene wax presses 1:0.8：0.5 weight proportion is mixed；The antioxidant is the 6- tert-butyl group -3- methylphenols；The idol
Connection agent is silane coupler；The stabilizer is lead sulfate tribasic；The compatilizer is ABS-g-MAH.
Embodiment 5
A kind of antibiotic plastic suitable for keyboard, is mainly made by the raw material of following parts by weight：110 parts of ABS matrix resins,
20 parts of makrolon, 6 parts of ethylene and acrylic acid copolymer, 3 parts of polyvinyl alcohol, 5 parts of ethylene propylene diene rubber, 6 parts of antibacterial matrices, fill out
50 parts of 12 parts of material, 8 parts of dispersant, 0.4 part of antioxidant, 0.5 part of coupling agent, 0.4 part of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.5：0.4：
0.25 weight proportion weighs standby；
B, the zeolite powder is heated to 380 DEG C, the heat time is 1.5h, is down to after room temperature and is added into the zeolite powder
The aseptic deionized water of 2.5 times of weight, stirs, while being 5 with the pH value of vinegar acid-conditioning solution, is stirred in 35 DEG C of water-bath
Mix 15min, then continue to stir 10min toward the nano titanium oxide silver is added in zeolite powder solution, obtain mixed solution A；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 1.2 times of weight,
25min is stirred in 40 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 35 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 20min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the water-bath temperature in rotary evaporator
Spend for 50 DEG C, vacuum is 0.06MPa, the time that is concentrated under reduced pressure, for 25min, obtains concentrate C, the concentrate C is added into double spiral shells
Bar extruder, head temperature be 200 DEG C, screw speed be 400r/min under conditions of extrude, it is water cooled but, then by drying
After packaging, the antibacterial matrices are obtained.
Wherein, the filler is calcium carbonate；The dispersant is to be grafted Tissuemat E, titanium dioxide and maleic anhydride to gather
Propylene wax presses 1:0.6：0.4 weight proportion is mixed；The antioxidant is the 6- tert-butyl group -3- methylphenols；The idol
Connection agent is silane coupler；The stabilizer is dibasic phosphite lead；The compatilizer is ABS-g-MAH.
Inventor is also tested the present invention suitable for the antibiotic plastic of keyboard, and test data is as follows：
Comparative example 1：Specific raw material is substantially the same manner as Example 1, and difference is：Antibacterial matrices use conventional antibacterial
Agent.
Comparative example 2：Dispersant, antioxidant, coupling agent, stabilizer and compatilizer are conventional auxiliary agent, and without anti-
Starter grain.
The sample of the embodiment of the present invention and comparative example is molded into standard batten to be tested according to following standard, its moderate resistance
Bacterium and antifungi test are carried out according to standard QB/T2591-2003, and detection bacterium is staphylococcus aureus, Escherichia coli two
Kind；Detection mould is aspergillus niger, Aspergillus terreus, aflatoxin, aspergillus oryzae, aspergillus parasiticus, Citreoviridin, seven kinds of penicillic acid.
Test result such as table 1 below：
Table 1
It can be obtained from above-mentioned data, antibacterial matrices of the invention effectively and ABS matrix resins are compatible, and can be effectively improved
The intensity of keyboard case material, and obtained keyboard case material has strong antibacterial and strong antimycotic performance.The present invention's
Tensile strength, bending strength, the bending modulus of plastics have the trend of increase, namely the rigidity of material becomes big.Material it is linear
The coefficient of expansion is in reduction trend with notch impact strength, and antibiotic plastic made from embodiment 3 and embodiment 5 has reached QB/
The antibacterium of highest ranking and antifungi rank in T2591-2003.In addition, made from 1-5 of the embodiment of the present invention and comparative example 1
Antibiotic plastic surface is good, comfortable feel, and frosting out-of-flatness made from comparative example 2, matt, and feel is poor.
In order to verify the weatherability and slow release of plastics anti-microbial property, the sample in 1-5 of the embodiment of the present invention is randomly selected
Standard batten is molded into, performance test is carried out according to the standard in following table：
| Testing standard | ASTMD2565(G155-1) |
| Light source | XENONArcLamp |
| Temperature | 63±2℃ |
| Humidity | 50 ± 2% |
| Radiation intensity | 0.35W/m2at340nm |
| Test period | 72H |
The performance test results are as shown in table 2 below：
Table 2
| Category of test | Before experiment | After first round experiment | After second wheel experiment | After third round experiment |
| Antibacterium (%) | 99.1 | 99.1 | 99.1 | 99 |
| Antifungi (level) | 0 | 0 | 0 | 0 |
The present invention is applied to the antibiotic plastic good weatherability of keyboard, the work(with sustained-release antibacterial it can be seen from upper table 2
Energy.
In summary, antibiotic plastic of the invention not only has a less linear expansion coefficient, larger bending modulus and
Preferable impact strength, the rigidity of material is good, also with strong antibacterium and Anti-mildew capability, and with slow release, anti-microbial property
Persistently.
Described above is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
The equal change or modification change completed under bright patent claim, the technical spirit suggested by all present invention, all should belong to
Cover the scope of the claims in the present invention.
Claims (9)
1. a kind of antibiotic plastic suitable for keyboard, it is characterised in that be mainly made by the raw material of following parts by weight：ABS matrixes
100-120 parts of resin, 15-25 parts of makrolon, 2-10 parts of ethylene acrylic acid co polymer, 1-5 parts of polyvinyl alcohol, ethylene-propylene-diene monomer
2-10 parts of glue, 4-8 parts of antibacterial matrices, 10-15 parts of filler, 5-12 parts of dispersant, 0.2-0.6 parts of antioxidant, coupling agent 0.3-
40-65 parts of 0.7 part, 0.2-0.6 parts of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.2-0.8：0.1-
0.6：0.1-0.4 weight proportion weighs standby；
B, the zeolite powder is heated to 350-450 DEG C, the heat time is 1-2h, is down to after room temperature and is added into the zeolite powder
The aseptic deionized water of 2-3 times of weight, stirs, while being 4-6 with the pH value of vinegar acid-conditioning solution, in 30-40 DEG C of water
Stir 10-35min in bath, then continue to stir 5-15min toward the nano titanium oxide silver is added in zeolite powder solution, must mix
Solution A；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 0.5-1.5 times of weight,
10-35min is stirred in 30-50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30-40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 15-30min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the bath temperature in rotary evaporator is
45-55 DEG C, vacuum is 0.05-0.09MPa, and the time that is concentrated under reduced pressure, for 10-35min, obtains concentrate C, the concentrate C is added
Enter double screw extruder, be 150-230 DEG C in head temperature, screw speed is extrusion under conditions of 300-600r/min, through water
Cooling, then after drying and packaging, obtain the antibacterial matrices.
2. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that mainly by following parts by weight
Raw material be made：105-115 parts of ABS matrix resins, 17-23 parts of makrolon, 4-9 parts of ethylene acrylic acid co polymer, polyethylene
2-4 parts of alcohol, 3-8 parts of ethylene propylene diene rubber, 5-7 parts of antibacterial matrices, 11-14 parts of filler, 6-10 parts of dispersant, antioxidant 0.3-
45-60 parts of 0.5 part, 0.4-0.6 parts of coupling agent, 0.3-0.5 parts of stabilizer and compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.3-0.7：0.2-
0.5：0.2-0.3 weight proportion weighs standby；
B, the zeolite powder is heated to 350-450 DEG C, the heat time is 1-2h, is down to after room temperature and is added into the zeolite powder
The aseptic deionized water of 2.2-2.8 times of weight, stirs, while being 4.5-5.5 with the pH value of vinegar acid-conditioning solution, in 30-
40 DEG C of stirred in water bath 10-35min, then continue to stir 5- toward the nano titanium oxide silver is added in zeolite powder solution
15min, obtains mixed solution A；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 0.8-1.3 times of weight,
10-35min is stirred in 30-50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30-40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 15-30min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the bath temperature in rotary evaporator is
45-55 DEG C, vacuum is 0.05-0.09MPa, and the time that is concentrated under reduced pressure, for 10-35min, obtains concentrate C, the concentrate C is added
Enter double screw extruder, be 150-230 DEG C in head temperature, screw speed is extrusion under conditions of 300-600r/min, through water
Cooling, then after drying and packaging, obtain the antibacterial matrices.
3. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that mainly by following parts by weight
Raw material be made：110 parts of ABS matrix resins, 20 parts of makrolon, 6 parts of ethylene acrylic acid co polymer, 3 parts of polyvinyl alcohol, ternary
5 parts of EP rubbers, 6 parts of antibacterial matrices, 12 parts of filler, 8 parts of dispersant, 0.4 part of antioxidant, 0.5 part of coupling agent, stabilizer
0.4 part and 50 parts of compatilizer；
The antibacterial matrices are prepared from by the following steps：
A, zeolite powder, nano titanium oxide silver, four acicular type zinc oxide crystal whisker and organopolysiloxane pressed 1:0.5：0.4：0.25
Weight proportion weigh it is standby；
B, the zeolite powder is heated to 350-450 DEG C, the heat time is 1-2h, is down to after room temperature and is added into the zeolite powder
The aseptic deionized water of 2.5 times of weight, stirs, while being 5 with the pH value of vinegar acid-conditioning solution, in 30-40 DEG C of water-bath
Middle stirring 10-35min, then continue to stir 5-15min toward the nano titanium oxide silver is added in zeolite powder solution, it must mix molten
Liquid A；
C, the four acicular type zinc oxide crystal whisker and organopolysiloxane be put into the aseptic deionized water of 1.2 times of weight, in 30-
10-35min is stirred in 50 DEG C, mixed liquid B is obtained；
D, mixed solution A is continually maintained in 30-40 DEG C of water-bath, be while stirring added drop-wise to the mixed solution B described
Continue to stir 15-30min in mixed solution A, after dripping, obtain composite solution；
E, composite solution made from step d is put into rotary evaporator be concentrated under reduced pressure, the bath temperature in rotary evaporator is
45-55 DEG C, vacuum is 0.05-0.09MPa, and the time that is concentrated under reduced pressure, for 10-35min, obtains concentrate C, the concentrate C is added
Enter double screw extruder, be 150-230 DEG C in head temperature, screw speed is extrusion under conditions of 300-600r/min, through water
Cooling, then after drying and packaging, obtain the antibacterial matrices.
4. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that the filler is talcum
Powder, calcium carbonate or attapulgite.
5. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that the dispersant is will be poly-
Ethylene waxes, titanium dioxide and maleic anhydride inoculated polypropylene wax press 1:0.5-0.8：0.2-0.5 weight proportion is mixed.
6. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that the antioxidant is 6-
The tert-butyl group -3- methylphenols or 2,4- DI-tert-butylphenol compounds.
7. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that the coupling agent is silane
Coupling agent.
8. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that the stabilizer is three salt
Base lead sulfate, dibasic phosphite lead, lead stearate or lead phthalate.
9. a kind of antibiotic plastic suitable for keyboard according to claim 1, it is characterised in that the compatilizer is ABS-
g-MAH。
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Application publication date: 20170728 |