CN109401053A - A kind of food dustproof cover antibiotic plastic and preparation method thereof - Google Patents
A kind of food dustproof cover antibiotic plastic and preparation method thereof Download PDFInfo
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- CN109401053A CN109401053A CN201811236411.5A CN201811236411A CN109401053A CN 109401053 A CN109401053 A CN 109401053A CN 201811236411 A CN201811236411 A CN 201811236411A CN 109401053 A CN109401053 A CN 109401053A
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- titanium dioxide
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- dustproof cover
- solution
- modifying titanium
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- 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
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- 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
- 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
Abstract
The invention discloses a kind of food dustproof cover antibiotic plastic, raw material includes: 80-100 parts of mixed resin, 20-40 parts of filler, 0.03-0.05 parts of antioxidant, 1-3 parts of compatilizer, 2-4 parts of lubricant, 2-4 parts of additive by weight；Wherein, mixed resin is polypropylene, POE resin, polyvinyl chloride, and filler is modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide.The invention also discloses the preparation methods of above-mentioned food dustproof cover plastic material.Antibiotic property of the present invention is good, and impact resistance is high.
Description
Technical field
The present invention relates to plastics arts more particularly to a kind of food dustproof cover antibiotic plastic and preparation method thereof.
Background technique
Polypropylene is a kind of thermoplastic resin as prepared by propylene polymerization.It is divided into isotactic poly- third by methyl arrangement position
Alkene, random polypropylene and three kinds of syndiotactic polypropylene.Polypropylene is usually translucent colorless solid, odorless nontoxic.Heat-resisting, corrosion resistant
Erosion, product can be its outstanding advantages with moise-heat sterilization.Density is small, is most light general-purpose plastics.But more easy to aging, uvioresistant
Performance is low, easy to aging.The organic solvents such as common acid, alkali almost do not work to it, can be used for tableware and packaging material for food,
Such as food dustproof cover.Due to food dustproof cover Long Term Contact food, bacterium easy to breed needs to carry out antimicrobial treatment to it,
But the food dustproof cover with antibacterial functions is less at present.
Summary of the invention
Technical problems based on background technology, the invention proposes a kind of food dustproof cover antibiotic plastic and its systems
Preparation Method, antibiotic property of the present invention is good, and impact resistance is high.
A kind of food dustproof cover antibiotic plastic proposed by the present invention, raw material include: mixed resin 80- by weight
100 parts, 20-40 parts of filler, 0.03-0.05 parts of antioxidant, 1-3 parts of compatilizer, 2-4 parts of lubricant, 2-4 parts of additive；Wherein,
Mixed resin is polypropylene, POE resin, polyvinyl chloride, and filler is modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide.
Preferably, in the preparation process of modifying titanium dioxide, ethyl alcohol is added in polyvinylpyrrolidone, tetrabutyl titanate
In be uniformly mixed so as to obtain solution A；Glacial acetic acid, silver nitrate, water and ethyl alcohol are mixed, pH=2.5-3 is adjusted and obtains solution B；Solution A is dripped
It is added in solution B, is stirred continuously, is placed at room temperature for during being added dropwise, calcining obtains modifying titanium dioxide.
Preferably, in the preparation process of modifying titanium dioxide, solution A is added drop-wise to by solution B with 1-2 drops/sec of speed
In.
Preferably, in the preparation process of modifying titanium dioxide, mixing speed 300-400r/min.
Preferably, in the preparation process of modifying titanium dioxide, it is placed at room temperature for 20-24h.
Preferably, in the preparation process of modifying titanium dioxide, calcination temperature is 400-500 DEG C, calcination time 1.5-
2h。
Preferably, in the preparation process of modifying titanium dioxide, pH is adjusted with aqueous hydrochloric acid solution.
Preferably, in the preparation process of modifying titanium dioxide, bulking value (g/ml) ratio of silver nitrate, tetrabutyl titanate
For 1-2:50.
Preferably, in the preparation process of modifying titanium dioxide, in solution A, polyvinylpyrrolidone, tetrabutyl titanate,
The volume ratio of ethyl alcohol is 0.5-1:8-9:30-35.
Preferably, in the preparation process of modifying titanium dioxide, in solution B, the volume ratio of glacial acetic acid, water and ethyl alcohol is 3-
3.5:8-9:30-35.
Preferably, in the preparation process of modifying titanium dioxide, the volume ratio of solution A and solution B is 0.8-1:1.
Preferably, polypropylene, POE resin, the weight ratio of polyvinyl chloride are 8-9:1-2:0.5-1.
Preferably, modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide weight ratio be 8-12:15-30:4-6.
Preferably, antioxidant is antioxidant BHT.
Preferably, compatilizer is maleic anhydride inoculated polypropylene.
Preferably, lubricant is stearic acid and white oil, wherein the weight ratio of stearic acid and white oil is 1:1-1.5.
Preferably, additive is hexadecyltrimethylammonium chloride.
The invention also discloses the preparation method of above-mentioned food dustproof cover plastic material, include the following steps: to mix
Base-material, filler, antioxidant, compatilizer, lubricant, additive mix, and it is dust-proof to obtain food through double screw extruder extrusion particle
Lid uses plastic material.
The present invention selects tetrabutyl titanate to prepare titanium dioxide, and nitric acid galactic longitude suitable process is added in the solution and is prepared into
To titanium dioxide, so that titanium dioxide has porous structure, silver is distributed in duct, and silver and titanium dioxide cooperate, collaboration
Synergy can adsorb bacterium concentration to greatly increase anti-microbial property of the invention, and poriferous titanium dioxide has absorption property
Sterilization, bactericidal effect and suction-operated are synergistic, greatly increase bactericidal property of the invention；And titanium dioxide has uvioresistant
Linearly energy cooperates with silver, can increase uvioresistant and anti-aging property of the invention；Hexadecyltrimethylammonium chloride
It cooperates with modifying titanium dioxide, antibiotic property of the invention can be further increased；Kaolin also has adsorptivity, with modification
Titanium dioxide matches, and can further increase antibiotic property of the invention；Modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide
It is cooperated with proper ratio, shock resistance and anti-flammability of the invention can be increased；Polypropylene, POE resin, polyvinyl chloride
It is cooperated with proper ratio, the mechanical performances such as shock resistance of the invention can be increased；Antioxidant BHT and modifying titanium dioxide phase
Cooperation, increases anti-aging, antioxygenic property of the invention；Maleic anhydride inoculated polypropylene, stearic acid and white oil cooperate, and promote
It is evenly dispersed into each substance, further increase mechanical performance of the invention；Above-mentioned each substance with proper ratio cooperate so that
The present invention has good antibiotic property and mechanical performance.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of food dustproof cover antibiotic plastic, raw material include: 90 parts of mixed resin by weight, 30 parts of filler, are resisted
0.04 part of oxygen agent, 2 parts of compatilizer, 3 parts of lubricant, 3 parts of additive；Wherein, mixed resin is polypropylene, POE resin, polychlorostyrene second
Alkene, filler are modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide.
The preparation method of above-mentioned food dustproof cover plastic material includes the following steps: mixed resin, filler, antioxygen
Agent, compatilizer, lubricant, additive mix, and squeeze out particle through double screw extruder and obtain food dustproof cover plastic material.
Embodiment 2
A kind of food dustproof cover antibiotic plastic, raw material include: 80 parts of mixed resin by weight, 40 parts of filler, are resisted
0.03 part of oxygen agent BHT, 3 parts of maleic anhydride inoculated polypropylene, 2 parts of lubricant, 4 parts of hexadecyltrimethylammonium chloride；Wherein,
Mixed resin is polypropylene, POE resin, polyvinyl chloride, and filler is modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide；
In the preparation process of modifying titanium dioxide, polyvinylpyrrolidone, tetrabutyl titanate are added in ethyl alcohol and are mixed
Obtain solution A, wherein polyvinylpyrrolidone, tetrabutyl titanate, ethyl alcohol volume ratio be 0.5:9:30；By glacial acetic acid, nitric acid
Silver, water and ethyl alcohol mix, and adjust pH=3 with aqueous hydrochloric acid solution and obtain solution B, wherein the volume ratio of glacial acetic acid, water and ethyl alcohol is
3:9:30；Solution A is added drop-wise in solution B with 2 drops/sec of speed, is stirred continuously during being added dropwise, with the speed of 300r/min
Stirring, is placed at room temperature for for 24 hours, is warming up to 400 DEG C, calcining 2h obtains modifying titanium dioxide, wherein silver nitrate, tetrabutyl titanate
For bulking value (g/ml) than being 1:50, the volume ratio of solution A and solution B is 1:1.
The preparation method of above-mentioned food dustproof cover plastic material includes the following steps: mixed resin, filler, antioxygen
Agent, compatilizer, lubricant, additive mix, and squeeze out particle through double screw extruder and obtain food dustproof cover plastic material.
Embodiment 3
A kind of food dustproof cover antibiotic plastic, raw material include: 100 parts of mixed resin by weight, 20 parts of filler, are resisted
0.05 part of oxygen agent BHT, 1 part of maleic anhydride inoculated polypropylene, 4 parts of lubricant, 2 parts of hexadecyltrimethylammonium chloride；Wherein,
Mixed resin is polypropylene, POE resin, polyvinyl chloride, and filler is modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide；
In the preparation process of modifying titanium dioxide, polyvinylpyrrolidone, tetrabutyl titanate are added in ethyl alcohol and are mixed
Obtain solution A, wherein polyvinylpyrrolidone, tetrabutyl titanate, ethyl alcohol volume ratio be 1:8:35；By glacial acetic acid, nitric acid
Silver, water and ethyl alcohol mix, and adjust pH=2.5 with aqueous hydrochloric acid solution and obtain solution B, wherein the volume ratio of glacial acetic acid, water and ethyl alcohol
For 3.5:8:35；Solution A is added drop-wise in solution B with 1 drop/sec of speed, is stirred continuously during being added dropwise, with 400r/min's
Speed stirring, is placed at room temperature for 20h, is warming up to 500 DEG C, calcining 1.5h obtains modifying titanium dioxide, wherein silver nitrate, metatitanic acid are just
Than being 2:50, the volume ratio of solution A and solution B is 0.8:1 for the bulking value (g/ml) of butyl ester；
Polypropylene, POE resin, the weight ratio of polyvinyl chloride are 9:1:1；
Modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide weight ratio be 8:30:4；
Lubricant is stearic acid and white oil, wherein the weight ratio of stearic acid and white oil is 1:1.5.
The preparation method of above-mentioned food dustproof cover plastic material includes the following steps: mixed resin, filler, antioxygen
Agent, compatilizer, lubricant, additive mix, and squeeze out particle through double screw extruder and obtain food dustproof cover plastic material.
Embodiment 4
A kind of food dustproof cover antibiotic plastic, raw material include: 85 parts of mixed resin by weight, 35 parts of filler, are resisted
0.035 part of oxygen agent BHT, 2.5 parts of maleic anhydride inoculated polypropylene, 2.5 parts of lubricant, hexadecyltrimethylammonium chloride 3.5
Part；Wherein, mixed resin is polypropylene, POE resin, polyvinyl chloride, and filler is modifying titanium dioxide, kaolin, nanometer hydrogen-oxygen
Change magnesium；
In the preparation process of modifying titanium dioxide, polyvinylpyrrolidone, tetrabutyl titanate are added in ethyl alcohol and are mixed
Obtain solution A, wherein polyvinylpyrrolidone, tetrabutyl titanate, ethyl alcohol volume ratio be 0.6:8.8:31；By glacial acetic acid, nitre
Sour silver, water and ethyl alcohol mix, and adjust pH=2.8 with aqueous hydrochloric acid solution and obtain solution B, wherein the volume of glacial acetic acid, water and ethyl alcohol
Than for 3.1:8.8:31；Solution A is added drop-wise in solution B with 2 drops/sec of speed, is stirred continuously during being added dropwise, with 330r/
The speed of min stirs, and is placed at room temperature for 23h, is warming up to 420 DEG C, calcining 1.8h obtains modifying titanium dioxide, wherein silver nitrate, titanium
Than being 1.3:50, the volume ratio of solution A and solution B is 0.95:1 for the bulking value (g/ml) of sour N-butyl；
Polypropylene, POE resin, the weight ratio of polyvinyl chloride are 8:2:0.5；
Modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide weight ratio be 12:15:6；
Lubricant is stearic acid and white oil, wherein the weight ratio of stearic acid and white oil is 1:1.
The preparation method of above-mentioned food dustproof cover plastic material includes the following steps: mixed resin, filler, antioxygen
Agent, compatilizer, lubricant, additive mix, and squeeze out particle through double screw extruder and obtain food dustproof cover plastic material.
Embodiment 5
A kind of food dustproof cover antibiotic plastic, raw material include: 95 parts of mixed resin by weight, 25 parts of filler, are resisted
Oxygen agent BHT 0.045,1.5 parts of maleic anhydride inoculated polypropylene, 3.5 parts of lubricant, 2.5 parts of hexadecyltrimethylammonium chloride；
Wherein, mixed resin is polypropylene, POE resin, polyvinyl chloride, and filler is modifying titanium dioxide, kaolin, nanometer hydroxide
Magnesium；
In the preparation process of modifying titanium dioxide, polyvinylpyrrolidone, tetrabutyl titanate are added in ethyl alcohol and are mixed
Obtain solution A, wherein polyvinylpyrrolidone, tetrabutyl titanate, ethyl alcohol volume ratio be 0.8:8.2:33；By glacial acetic acid, nitre
Sour silver, water and ethyl alcohol mix, and adjust pH=2.6 with aqueous hydrochloric acid solution and obtain solution B, wherein the volume of glacial acetic acid, water and ethyl alcohol
Than for 3.3:8.2:33；Solution A is added drop-wise in solution B with 1 drop/sec of speed, is stirred continuously during being added dropwise, with 370r/
The speed of min stirs, and is placed at room temperature for 21h, is warming up to 480 DEG C, calcining 1.6h obtains modifying titanium dioxide, wherein silver nitrate, titanium
Than being 1.7:50, the volume ratio of solution A and solution B is 0.85:1 for the bulking value (g/ml) of sour N-butyl；
Polypropylene, POE resin, the weight ratio of polyvinyl chloride are 8.5:1.5:0.7；
Modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide weight ratio be 10:25:5；
Lubricant is stearic acid and white oil, wherein the weight ratio of stearic acid and white oil is 1:1.3.
The preparation method of above-mentioned food dustproof cover plastic material includes the following steps: mixed resin, filler, antioxygen
Agent, compatilizer, lubricant, additive mix, and squeeze out particle through double screw extruder and obtain food dustproof cover plastic material.
Reference examples 1: not filled, hexadecyltrimethylammonium chloride, other are the same as embodiment 5.
Reference examples 2: being not added modifying titanium dioxide, other are the same as embodiment 5.
Reference examples 3: modifying titanium dioxide is changed to common nonporous silica titanium, other are the same as embodiment 5.
Reference examples 4: being changed to Argent grain for modifying titanium dioxide, other are the same as embodiment 5.
Test example 1
By embodiment 5, reference examples 1-4, it is molded into the identical disk of area, thickness by the same way, disk is for resisting
The inspection of bacterium property, and respective mechanical performance is detected, it is as a result as follows:
| Project | Antibacterial circle diameter mm | Impact strength kJ/m2 |
| Reference examples 1 | Without inhibition zone | 40.3 |
| Reference examples 2 | 5.8 | 56.7 |
| Reference examples 3 | 5.0 | 58.2 |
| Reference examples 4 | 10.7 | 52.1 |
| Embodiment 5 | 20.1 | 75.4 |
As can be seen from the above table, the present invention has good antibiotic property, and has preferable shock resistance.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of food dustproof cover antibiotic plastic, which is characterized in that its raw material includes: mixed resin 80-100 by weight
Part, 20-40 parts of filler, 0.03-0.05 parts of antioxidant, 1-3 parts of compatilizer, 2-4 parts of lubricant, 2-4 parts of additive；Wherein, it mixes
Conjunction base-material is polypropylene, POE resin, polyvinyl chloride, and filler is modifying titanium dioxide, kaolin, nano-sized magnesium hydroxide.
2. food dustproof cover plastic material according to claim 1, which is characterized in that in the preparation of modifying titanium dioxide
Polyvinylpyrrolidone, tetrabutyl titanate are added in ethyl alcohol and are uniformly mixed so as to obtain solution A by Cheng Zhong；By glacial acetic acid, silver nitrate, water and
Ethyl alcohol mixes, and adjusts pH=2.5-3 and obtains solution B；Solution A is added drop-wise in solution B, is stirred continuously during being added dropwise, room temperature
It places, calcining obtains modifying titanium dioxide；Preferably, in the preparation process of modifying titanium dioxide, with 1-2 drops/sec of speed
Solution A is added drop-wise in solution B；Preferably, in the preparation process of modifying titanium dioxide, mixing speed 300-400r/
min；Preferably, in the preparation process of modifying titanium dioxide, it is placed at room temperature for 20-24h；Preferably, in modifying titanium dioxide
In preparation process, calcination temperature is 400-500 DEG C, calcination time 1.5-2h；Preferably, in the preparation of modifying titanium dioxide
Cheng Zhong adjusts pH with aqueous hydrochloric acid solution.
3. food dustproof cover plastic material according to claim 2, which is characterized in that in the preparation of modifying titanium dioxide
Cheng Zhong, silver nitrate, tetrabutyl titanate bulking value (g/ml) than be 1-2:50；Preferably, in the preparation of modifying titanium dioxide
In the process, in solution A, polyvinylpyrrolidone, tetrabutyl titanate, ethyl alcohol volume ratio be 0.5-1:8-9:30-35；It is preferred that
Ground, in the preparation process of modifying titanium dioxide, in solution B, the volume ratio of glacial acetic acid, water and ethyl alcohol is 3-3.5:8-9:30-
35；Preferably, in the preparation process of modifying titanium dioxide, the volume ratio of solution A and solution B is 0.8-1:1.
4. any one of -3 food dustproof cover plastic material according to claim 1, which is characterized in that polypropylene, POE tree
Rouge, polyvinyl chloride weight ratio be 8-9:1-2:0.5-1.
5. any one of -4 food dustproof cover plastic material according to claim 1, which is characterized in that modifying titanium dioxide,
Kaolin, nano-sized magnesium hydroxide weight ratio be 8-12:15-30:4-6.
6. any one of -5 food dustproof cover plastic material according to claim 1, which is characterized in that antioxidant is antioxidant
BHT。
7. any one of -6 food dustproof cover plastic material according to claim 1, which is characterized in that compatilizer is maleic acid
Acid anhydride graft polypropylene.
8. any one of -7 food dustproof cover plastic material according to claim 1, which is characterized in that lubricant is stearic acid
And white oil, wherein the weight ratio of stearic acid and white oil is 1:1-1.5.
9. any one of -8 food dustproof cover plastic material according to claim 1, which is characterized in that additive is hexadecane
Base trimethyl ammonium chloride.
10. a kind of preparation method of the food dustproof cover plastic material as described in claim any one of 1-9, which is characterized in that
Include the following steps: to mix mixed resin, filler, antioxidant, compatilizer, lubricant, additive, be squeezed through double screw extruder
Particle obtains food dustproof cover plastic material out.
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