CN111253648A - Photodegradable plastic - Google Patents
Photodegradable plastic Download PDFInfo
- Publication number
- CN111253648A CN111253648A CN201811464520.2A CN201811464520A CN111253648A CN 111253648 A CN111253648 A CN 111253648A CN 201811464520 A CN201811464520 A CN 201811464520A CN 111253648 A CN111253648 A CN 111253648A
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- CN
- China
- Prior art keywords
- agent
- antibacterial
- photodegradable
- plastic
- performance synthetic
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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
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a photodegradable plastic, which is prepared by mixing inorganic nano calcium carbonate particles serving as a carrier with an antibacterial agent under the action of a surface coating agent to prepare inorganic nano antibacterial master batches, melting and blending a photodegradable agent, the prepared antibacterial master batches, an olefin raw material, a solubilizer, a plasticizer, a cross-linking agent and a dispersing agent by a double screw extruder at the temperature of 180 ℃ at a certain ratio, introducing the photodegradable agent into a main chain of the olefin raw material, cooling and granulating to prepare the high-performance synthetic photodegradable antibacterial plastic, wherein the density of the prepared high-performance synthetic photodegradable antibacterial plastic is 1.05-1.3g/cm3, the tensile strength is not less than 15MPa, the elongation at break is not less than 400%, and the decomposition degree is not less than 99%. The product is widely used in the industries of master batches, packaging films, food packaging bags, disposable lunch boxes, medical treatment and the like.
Description
Technical Field
The invention relates to the technical field of chemical industry, and mainly relates to a high-performance synthetic photodegradable antibacterial plastic.
Background
The existing photodegradable antibacterial plastic is a novel high-performance low-cost degradable plastic, is widely applied to products with service lives such as master batches, packaging films, food packaging bags, disposable meal boxes, medical treatment and the like, has the advantages that the degradation time can be controlled according to the amount of the added auxiliary agent, the degradation is complete, and the prepared material has high air permeability, antibacterial performance and good application effect. At present, the preparation of the degradable plastic is still blank at home, only American manufacturing is available at home and abroad, and a preparation process of high-performance and low-cost high-performance synthetic photodegradable antibacterial plastic is urgently needed to produce the product and meet market demands.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a photodegradable plastic, produces a high-performance synthetic photodegradable antibacterial plastic with high performance and low cost, and meets the requirements of industries such as master batch, packaging films, food packaging bags, disposable lunch boxes, medical treatment and the like.
The preparation method mainly comprises the steps of mixing inorganic nano calcium carbonate particles serving as carriers with an antibacterial agent under the action of a surface coating agent to prepare inorganic nano antibacterial master batches, carrying out melt blending on a photodegradant, the prepared antibacterial master batches, an olefin raw material, a solubilizer, a plasticizer, a cross-linking agent and a dispersing agent by a double screw extruder at the temperature of 180 ℃ according to a certain proportion, introducing the photodegradant into a main chain of the olefin raw material, cooling and carrying out grain cutting to prepare the high-performance synthetic photodegradable antibacterial plastic, wherein the antibacterial plastic has an antibacterial effect on bacteria such as escherichia coli, staphylococcus and the like, the density of the prepared high-performance synthetic photodegradable antibacterial plastic is 1.05-1.3g/cm3, the tensile strength is not less than 15MPa, the elongation at break is not less than 400%, and the decomposition degree is not less than 99%.
The antibacterial agent is one or two of hinokitiol and glucosamine benzene.
The surface coating agent is one or more of stearic acid, sodium stearate and sodium dodecyl benzene sulfonate.
The ratio of the inorganic nano calcium carbonate particles to the surface coating agent and the antibacterial agent is 80: 1.5: 1.
The photodegradable agent is one or more of tetraphenyl ketone, cerium stearate and aluminum stearate.
The solubilizer is one or more of polyethylene wax, chlorinated polypropylene and grafted polypropylene.
The plasticizer is one or two of polyalcohol benzoate and dimethyl phthalate.
The crosslinking agent is one or two of organic peroxide and vinyl siloxane.
The dispersing agent is one or two of hydroxyethylidene diphosphate and hydroxyethylidene diphosphate sodium.
The proportion of the photodegradable agent, the antibacterial master batch, the olefin raw material, the solubilizer, the plasticizer, the cross-linking agent and the dispersing agent is 0.3: 1: 100: 0.5.
The method has the main beneficial effects that: the product has antibacterial effect due to the antibacterial agent.
Because the surface coating agent is adopted, the antibacterial agent and the inorganic nano calcium carbonate particles are uniformly coated.
Due to the adoption of the photodegradable agent, the degradation time of the product is controllable, the degradation is thorough, and the prepared plastic has high air permeability.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
Example 1
Mixing inorganic nano calcium carbonate particles, a surface coating agent and an antibacterial agent in a ratio of 80: 1.5: 1 in a stirring kettle, keeping the temperature at 60-70 ℃, and stirring for 2 hours to obtain the inorganic nano antibacterial master batch. The photodegradable agent, the antibacterial master batch, the olefin raw material, the solubilizer, the plasticizer, the cross-linking agent and the dispersant are put into a double screw extruder according to the proportion of 0.3: 1: 100: 0.5 to be melted and blended, the heating temperature is 170-180 ℃, the materials are extruded out after blending and cooled, and then the materials are cut into granules to prepare the high-performance synthetic photodegradable antibacterial plastic
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A photodegradable plastic mainly comprises the processes of inorganic material coating, melt blending, cooling, granulating and the like, and is characterized in that: inorganic nano calcium carbonate particles are adopted as a carrier and mixed with an antibacterial agent under the action of a surface coating agent to prepare inorganic nano antibacterial master batches, a photodegradant, the prepared antibacterial master batches, an olefin raw material, a solubilizer, a plasticizer, a cross-linking agent and a dispersing agent are melted and blended by a double screw extruder at the temperature of 170 ℃ and 180 ℃ according to a certain proportion, the photodegradant is introduced into the main chain of the olefin raw material, and the high-performance synthetic photodegradable antibacterial plastic is prepared by cooling and granulating, wherein the density of the prepared high-performance synthetic photodegradable antibacterial plastic is 1.05-1.3g/cm3, the tensile strength is more than or equal to 15MPa, the elongation at break is more than or equal to 400 percent, and the decomposition degree is more than or equal to 99 percent.
2. The high-performance synthetic photodegradation plastic as claimed in claim 1, wherein: the antibacterial agent is one or two of hinokitiol and glucosamine benzene.
3. The high-performance synthetic photodegradation plastic as claimed in claim 1, wherein: the surface coating agent is one or more of stearic acid, sodium stearate and sodium dodecyl benzene sulfonate.
4. The high-performance synthetic photodegradation plastic as claimed in claim 1, 2 and 3, wherein: the ratio of the inorganic nano calcium carbonate particles to the surface coating agent and the antibacterial agent in the antibacterial master batch is 80: 1.5: 1.
5. The high-performance synthetic photodegradation plastic as claimed in claim 1, wherein: the photodegradable agent is one or more of tetraphenyl ketone, cerium stearate and aluminum stearate.
6. The high-performance synthetic photodegradation plastic as claimed in claim 1, wherein: the solubilizer is one or more of polyethylene wax, chlorinated polypropylene and grafted polypropylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464520.2A CN111253648A (en) | 2018-12-03 | 2018-12-03 | Photodegradable plastic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811464520.2A CN111253648A (en) | 2018-12-03 | 2018-12-03 | Photodegradable plastic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111253648A true CN111253648A (en) | 2020-06-09 |
Family
ID=70953738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811464520.2A Pending CN111253648A (en) | 2018-12-03 | 2018-12-03 | Photodegradable plastic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111253648A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111944226A (en) * | 2020-09-04 | 2020-11-17 | 苏州高松美姿自动化科技有限公司 | Photodegradable plastic packaging bag environment-friendly material and preparation method thereof |
-
2018
- 2018-12-03 CN CN201811464520.2A patent/CN111253648A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111944226A (en) * | 2020-09-04 | 2020-11-17 | 苏州高松美姿自动化科技有限公司 | Photodegradable plastic packaging bag environment-friendly material and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200609 |
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| WD01 | Invention patent application deemed withdrawn after publication |