CN101392065A - Inorganic antibacterial plastic film and preparation method thereof - Google Patents
Inorganic antibacterial plastic film and preparation method thereof Download PDFInfo
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- CN101392065A CN101392065A CNA2007100460471A CN200710046047A CN101392065A CN 101392065 A CN101392065 A CN 101392065A CN A2007100460471 A CNA2007100460471 A CN A2007100460471A CN 200710046047 A CN200710046047 A CN 200710046047A CN 101392065 A CN101392065 A CN 101392065A
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- silver ions
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- inorganic antiseptic
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Abstract
The invention discloses an inorganic antimicrobial plastic film and a preparation method thereof and relates to the application of an inorganic nano antimicrobial with silver, in particular to an application method of an inorganic silver ion antimicrobial with large silver carrying capacity and stable discoloration performance in plastic films. The inorganic silver ion antimicrobial with large silver carrying capacity and stable performances of discoloration and the like, which is adopted by the invention, is well dispensed in a polyethylene resin, and excellent transparence, appearance characteristics and mechanical properties as well as good broad spectrum antibacterial property of final film products are obtained by improving the production technologies and equipment of extrusion and blow molding.
Description
Technical field
The present invention relates to a kind of application of inorganic nano carrying silver antimicrobials, the application method of silver ions inorganic antiseptic in plastics film that particularly a kind of silver carrying amount is big and discoloration is stable.
Background technology
Disinfecting, antimicrobialization, the cleaning of living environment of daily product become a kind of social development trend at present.The antiseptic-germicide that uses in the antibiotic plastic can be classified as mineral-type, organic class and natural class.There is the toxicity safe differential in organic class antiseptic-germicide, and poor chemical stability can make the resistance of microorganisms; Easily the migration poor durability is particularly heat-resisting poor, and many antibiotic plastics antibiotic composition under processing high temperature easily decomposes.Natural antimicrobial agent is easily charing decomposition at high temperature, and range of application is narrow, and antibacterial effect is poor.Inorganic antiseptic combines by high efficiency, the broad spectrum of the inorganic antibacterial material inherent is stable and antimicrobial component, has successfully overcome above shortcoming.Day nineteen eighty-three, this product river fuel Co., Ltd. released silver base inorganic antibacterial agent-Zeomic first in the whole world, after it exchanges the sodium ion in silver ions and the zeolite lattice, silver ions is loaded on the zeolite, form the novel inorganic anti-biotic material, this material is applied in the plastics film preparation well.But because this product granularity is big at present, be generally 1 micron, the transparency that influences plastics film is simultaneously easy to change, flavescence blackening easily in prolonged preservation and the use.
Summary of the invention
The present invention for solve the above-mentioned state of the art develop a kind of transparency well the every stable performance of not yellowing contain the silver ions inorganic antibacterial plastic film.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: a kind of inorganic antibacterial plastic film and preparation method thereof, and its step is as follows;
1, a kind of silver ions inorganic antiseptic of preparation, general molecular formula: AgZr
2(PO4)
3, wherein the silver ions weight percent is 2～15%, the zirconium phosphate weight percent is 85%～98%.Adopt conventional fine chemistry industry flow process, temperature of reaction is 60 ℃～90 ℃, and the reaction times is 2～4 hours, and raw material is solubility zirconates zirconium oxychloride, Silver Nitrate.The pH value of control solution is greater than 10 when synthetic; Clean dry to 980～1200 ℃ of antibiotic powder calcinings 2 hours, obtains median size at 70nm ~ 150nm sheet N-type waferN.
2, adopt molecular weight 6000～10000 polyolefine hyper-dispersants, silver ions inorganic antiseptic coating is handled.
3, adding 0.2%～1.0% silver ions inorganic antiseptic in vinyon adopts the blend screw rod to extrude to make the polyethylene master batch that contains silver ions inorganic antiseptic 20%.
4, in extruding film-blowing process, contain silver ions inorganic antiseptic polyethylene master batch 1%～5% more than the interpolation.
The present invention adopts stable silver ions inorganic antiseptics such as the big and discoloration of silver carrying amount that Shanghai Bonaweilai New Material Co., Ltd. provides, be distributed to it in polyvinyl resin well, and by improvement extrude, blowing production technique, equipment obtain the good transparency of final film article, appearance characteristics, mechanical property and good broad spectrum antibacterial, mechanical mechanics property of its relevant antibacterial plastic film meets GB/T 4456-1996 " packaging polyethylene blown film " standard.The antibacterial effect of its film: antibiotic rate index in 24 hours: contain antiseptic-germicide 0.2～1.0%, antibiotic rate〉90%.Its security LD
50〉=5000mg/kg; Its long-lasting film 57 ℃ of water-baths soak 3 week the back antibiotic rates still 〉=more than 90%.
Embodiment
In this product development process, adopt antiseptic-germicide and PE resin to annotate the principle of melting, be the combination of kneading and extrusioning blowing process.Technological line is mainly undertaken by following four steps:
(1) preparation of the antibiotic powder of inorganic nano silver-loaded zirconium phosphate
With zirconium oxychloride and phosphoric acid is raw material, makes the zirconium phosphate carrier with heating reflux method, controls its pattern and size.With zirconium phosphate carrier washes clean, reheat carries out the exchange and the absorption of silver ions with deionized water, and drying, calcining, comminution by gas stream are handled again.
(2) solve the inorganic nano antiseptic powder
When carrying out comminution by gas stream, dispersion agent is added in the micronizer mill by bypass liquid charging opening, utilize the motion of high velocity air, dispersion agent is formed film attached to the surface of antiseptic-germicide uniformly, prevent the secondary agglomeration of antiseptic-germicide, improve dispersed.
Groundwork is to select suitable dispersion agent and addition, and the adding speed of dispersion agent.
(3) mother particles of antibacterial plastics makes
Inorganic nano antiseptic powder and PE resin consolute are made plastic master batch, adopt silane coupling agent, solve both associativity and compatibility problem.
To add in the high-speed mixer through the inorganic nano antiseptic powder of dispersion treatment, open high-speed mixer, slowly add coupling agent, and make to mix by the liquid charging opening.The closing high-speed mixing machine adds Plastic Resin and dispersing auxiliary.Open high-speed mixer once more to mixing.Raw materials mixed added melt-processed becomes highly enriched mother particles of antibacterial plastics in the twin screw extruder.Groundwork is to select suitable coupling agent, dispersion agent and addition, the synergy that various auxiliary agents are used, and appropriate complete processing.
(4) reform of technology
In blown film, curtain coating process, adjust each machined parameters and guarantee that the interpolation of antibacterial matrices in the film-blowing process do not have influence to the resin mechanical property, make giving full play to of antibacterial antiplaque agent performance simultaneously, and assurance goods good surface appearance and transparency, groundwork is to determine film formulation, the addition of blown film casting technique parameter and antibacterial matrices.
1. determine rational formula
Consider that film product finally can satisfy the needs of social every profession and trade, according to market study, antibacterial film adopts high density polyethylene, multiple preparation materials such as low density polyethylene, polyethylene PP, EVA.Need add various auxiliary agents such as surface slip agent, oxidation inhibitor for improving some performance of processing film process and the finished product.
According to our factory's experience of film processed in the past, original scheme is specifically selected general or film grade resins, and melt index (g/10min) 0.2～2.8 is strict guarantee quality product and good workability, and the antibacterial matrices base material also should match.
In the trial-manufacturing process of reality, for taking into account the best uniform distribution of nano-antibacterial master batch, the every mechanics of machinery index that guarantees film again is unaffected, when processing polyethylene kind product, if can be with linear low density polyethylene (LLDPE) and its blend, can effectively improve the conclusion of the dispersiveness of antiseptic-germicide, optimum proportion LDPE is 20%, and LLDPE is 15%.
2. complete processing
The control of table 1 processing temperature
3. antibacterial matrices addition
The antibacterial matrices addition is advisable with 15%, so both can reduce cost, and guarantees the antibiotic rate of antimicrobial product again〉90% while, every machinery of film, mechanical performance index all can reach the standard-required of GB/T 4456 and GB 2410 after tested.
Relevant mechanical mechanics property index test result meet the requirements (table 2).
Table 2 mechanical mechanics property index test result
| Project | Index |
| Tensile strength (vertical, horizontal) Mpa | ≥18 |
| Elongation at break (vertical, horizontal) % | ≥270 |
| Shock strength | Sample number 〉=5 of not breaking |
Claims (1)
1. inorganic antibacterial plastic film and preparation method thereof is characterized in that step is as follows;
(1) a kind of silver ions inorganic antiseptic of preparation, general molecular formula: AgZr
2(PO4)
3, wherein the silver ions weight percent is 2～15%, the zirconium phosphate weight percent is 85%～98%.Adopt conventional fine chemistry industry flow process, temperature of reaction is 60 ℃～90 ℃, and the reaction times is 2～4 hours, and raw material is solubility zirconates zirconium oxychloride, Silver Nitrate.The pH value of control solution is greater than 10 when synthetic, clean dry, to antibiotic powder calcine 2 hours 980～1200 ℃, obtain median size at 70nm ~ 150nm sheet N-type waferN;
(2) adopt molecular weight 6000～10000 polyolefine hyper-dispersants, silver ions inorganic antiseptic coating is handled;
(3) adding 0.2%～1.0% silver ions inorganic antiseptic in vinyon adopts the blend screw rod to extrude to make the polyethylene master batch that contains silver ions inorganic antiseptic 20%;
(4) in extruding film-blowing process, contain silver ions inorganic antiseptic polyethylene master batch 1%～5% more than the interpolation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100460471A CN101392065A (en) | 2007-09-17 | 2007-09-17 | Inorganic antibacterial plastic film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100460471A CN101392065A (en) | 2007-09-17 | 2007-09-17 | Inorganic antibacterial plastic film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101392065A true CN101392065A (en) | 2009-03-25 |
Family
ID=40492593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100460471A Pending CN101392065A (en) | 2007-09-17 | 2007-09-17 | Inorganic antibacterial plastic film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101392065A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516627A (en) * | 2011-12-03 | 2012-06-27 | 广东聚缘塑料科技有限公司 | Silver-ion antibacterial plastic |
| CN103524858A (en) * | 2012-07-03 | 2014-01-22 | 合肥中科绿色家电科技有限公司 | Antibacterial coloring composition and preparation method thereof |
| CN104786527A (en) * | 2015-03-29 | 2015-07-22 | 安徽松泰包装材料有限公司 | Preparation technology of spiral film for corn flake package |
| CN109016762A (en) * | 2018-08-20 | 2018-12-18 | 珠海高先手术用品科技有限公司 | Antibacterial plastic film and its application |
| CN111902044A (en) * | 2018-03-29 | 2020-11-06 | 富士胶片株式会社 | Antibacterial composition, antibacterial film, and base material with antibacterial film |
-
2007
- 2007-09-17 CN CNA2007100460471A patent/CN101392065A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102516627A (en) * | 2011-12-03 | 2012-06-27 | 广东聚缘塑料科技有限公司 | Silver-ion antibacterial plastic |
| CN103524858A (en) * | 2012-07-03 | 2014-01-22 | 合肥中科绿色家电科技有限公司 | Antibacterial coloring composition and preparation method thereof |
| CN104786527A (en) * | 2015-03-29 | 2015-07-22 | 安徽松泰包装材料有限公司 | Preparation technology of spiral film for corn flake package |
| CN111902044A (en) * | 2018-03-29 | 2020-11-06 | 富士胶片株式会社 | Antibacterial composition, antibacterial film, and base material with antibacterial film |
| US11877577B2 (en) | 2018-03-29 | 2024-01-23 | Fujifilm Corporation | Antibacterial composition, antibacterial film, and antibacterial film-attached substrate |
| CN109016762A (en) * | 2018-08-20 | 2018-12-18 | 珠海高先手术用品科技有限公司 | Antibacterial plastic film and its application |
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| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090325 |