CN111019222A - Environment-friendly degradable plastic and preparation method thereof - Google Patents
Environment-friendly degradable plastic and preparation method thereof Download PDFInfo
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- CN111019222A CN111019222A CN201911372766.1A CN201911372766A CN111019222A CN 111019222 A CN111019222 A CN 111019222A CN 201911372766 A CN201911372766 A CN 201911372766A CN 111019222 A CN111019222 A CN 111019222A
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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
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- 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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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- 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 relates to the field of plastic products, and particularly discloses an environment-friendly degradable plastic and a preparation method thereof. The raw materials for preparation at least comprise 40-60 parts of resin, 5-10 parts of filler, 1-3 parts of stabilizer, 2-7 parts of coupling agent, 2-4 parts of lubricant and 20-30 parts of plant starch in parts by weight. The preparation method is simple in preparation process and low in cost, and the obtained plastic has good degradability and excellent mechanical property, has high practical significance and is worthy of popularization.
Description
Technical Field
The invention relates to the field of plastic products, in particular to an environment-friendly degradable plastic and a preparation method thereof.
Background
The plastic is used as an artificially synthesized high polymer material, and has the characteristics of good forming property, film forming property, insulating property, acid and alkali resistance, corrosion resistance, low air permeability, easy coloring, bright appearance and the like, so the plastic is widely applied to various aspects such as household electrical appliances, automobiles, furniture, packaging products, agricultural films and the like, and the mass use of the plastic generates a plurality of disposable plastic wastes which cannot be recycled, thereby causing increasingly serious white pollution, such as underground water pollution and soil pollution, damage to animal and plant resources and serious threat to the survival and health of human beings. At present, the production of plastics gradually draws close to the preparation of a degradable environment-friendly plastic.
The traditional high molecular resin is difficult to degrade by microorganisms due to the nature of the traditional high molecular resin, namely, the traditional high molecular resin cannot rot or mildew, and then the traditional high molecular resin is left in the existing life for a long time; therefore, the pollution problem of plastic garbage bags is getting more serious and the worldwide attention is drawn, in the prior art, a certain proportion of natural polymer materials which can be degraded by microorganisms, such as starch, cellulose, protein, chitin and the like, are added into polymer resin materials which can not be degraded by microorganisms, and the prepared products can be degraded by the microorganisms, but the plastic prepared by the technology has poor mechanical property and high cost, and is difficult to popularize and industrialize.
Therefore, the research on a degradable plastic with simple preparation process, low cost and strong mechanical property is the focus of attention of the technicians in the field.
Disclosure of Invention
In order to solve the technical problems, the first aspect of the invention provides an environment-friendly degradable plastic, which is prepared from at least the following raw materials in parts by weight: 40-60 parts of resin, 5-10 parts of filler, 1-3 parts of stabilizer, 2-7 parts of coupling agent, 2-4 parts of lubricant and 1-3 parts of antibacterial agent.
In a preferred embodiment of the present invention, the resin is one or more selected from polylactic acid, polyethylene resin, polypropylene resin, polystyrene resin, polyvinyl chloride resin, polytetrafluoroethylene, phenol resin, polyester resin, and polyamide resin.
As a preferred technical solution of the present invention, the resin is a combination of polylactic acid, polyethylene resin and polypropylene resin, wherein the mass ratio of polylactic acid, polyethylene resin and polypropylene resin is 1: (1-4): (0.5-2.5).
As a preferred technical solution of the present invention, the filler is one or more selected from light calcium carbonate, wollastonite powder, talc powder, barium sulfate, pyrophyllite powder, kaolin, fly ash, silicon carbide, boron nitride, and alumina.
In a preferred embodiment of the present invention, the stabilizer is one or more selected from benzoic acid, cadmium laurate and zinc laurate.
In a preferred embodiment of the present invention, the coupling agent is selected from one or more of silane coupling agents, titanate coupling agents, and aluminate coupling agents.
As a preferred technical solution of the present invention, the coupling agent is a combination of γ -aminopropyltriethoxysilane and isopropyltris (dodecylbenzenesulfonyl) titanate, wherein the mass ratio of isopropyltris (dioctylphosphato) titanate to isopropyltris (dodecylbenzenesulfonyl) titanate is 1: (0.5-2).
As a preferable technical scheme of the invention, the lubricant is selected from one or more of aluminum stearate, stearic acid, lithium stearate, oxidized polyethylene, lead stearate, zinc stearate, butyl stearate and polyethylene wax.
As a preferable technical scheme, the plant starch is selected from one or more of rice starch, glutinous rice starch, corn starch, wheat starch, cassava starch, potato starch, sweet potato starch, Chinese yam starch, mung bean starch and broad bean starch.
The second aspect of the invention provides a preparation method of environment-friendly degradable plastic, which at least comprises the following steps: mixing and granulating the resin, the filler, the stabilizer, the coupling agent, the lubricant and the antibacterial agent, and then blowing and molding to obtain the composite material.
Has the advantages that: the invention provides an environment-friendly degradable plastic and a preparation method thereof, and by adopting specific proportions and material selection among polylactic acid, polyethylene resin, polypropylene resin, filler, stabilizer, coupling agent, lubricant and plant starch, the prepared plastic is pollution-free and environment-friendly in the actual use process, has good degradability and short degradation period, and responds to the call of social environment protection; in addition, the plastic prepared by the invention also has good mechanical properties, greatly reduces the probability of easy damage of the plastic in use, and improves the service life and the service performance of the plastic; finally, the preparation process is simple, the cost is low, the practical significance is high, and the method is worthy of popularization.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
In order to solve the technical problems, the first aspect of the invention provides an environment-friendly degradable plastic, which is prepared from at least the following raw materials in parts by weight: 40-60 parts of resin, 5-10 parts of filler, 1-3 parts of stabilizer, 2-7 parts of coupling agent, 2-4 parts of lubricant and 20-30 parts of plant starch.
In a more preferred embodiment, the environmentally-friendly degradable plastic provided by the invention is prepared from at least the following raw materials in parts by weight: 45-55 parts of resin, 6-8 parts of filler, 1.5-2.5 parts of stabilizer, 3-5 parts of coupling agent, 2.5-3.5 parts of lubricant and 22-28 parts of plant starch.
In a most preferred embodiment, the environmentally-friendly degradable plastic provided by the invention is prepared from at least the following raw materials in parts by weight: 50 parts of resin, 7 parts of filler, 2 parts of stabilizer, 4 parts of coupling agent, 3 parts of lubricant and 25 parts of plant starch.
Resin composition
The resin of the present invention is generally an organic polymer which has a softening or melting range after being heated, has a tendency to flow under an external force when softened, and is solid, semi-solid, or liquid at room temperature. In the present invention, any polymer compound that can be used as a raw material for processing plastic products is referred to as a resin.
In a preferred embodiment, the resin of the present invention is selected from one or more of polylactic acid, polyethylene resin, polypropylene resin, polystyrene resin, polyvinyl chloride resin, polytetrafluoroethylene, phenol resin, polyester resin, and polyamide resin.
In a more preferred embodiment, the resin of the present invention is a combination of polylactic acid, polyethylene resin and polypropylene resin, wherein the mass ratio of polylactic acid, polyethylene resin and polypropylene resin is 1: (1-4): (0.5-2.5).
In a more preferred embodiment, the resin of the present invention is a combination of polylactic acid, polyethylene resin and polypropylene resin, wherein the mass ratio of polylactic acid, polyethylene resin and polypropylene resin is 1: (2-3): (1-2).
In a most preferred embodiment, the resin of the present invention is a combination of polylactic acid, polyethylene resin and polypropylene resin, wherein the mass ratio of polylactic acid, polyethylene resin and polypropylene resin is 1: 2.6: 1.5.
the polyethylene of the invention is a thermoplastic resin prepared by polymerizing ethylene. The polyethylene is odorless, nontoxic, has wax-like hand feeling, excellent low-temperature resistance and good chemical stability, and can resist corrosion of most of acid and alkali.
In a preferred embodiment, the polyethylene of the present invention is a low density polyethylene commercially available from a manufacturer including, but not limited to, the chinese petrochemical group, the metallocene petrochemical company, model number M2607F.
In a preferred embodiment, the polypropylene resin of the present invention is commercially available from a manufacturer including, but not limited to, the petrochemical group of China, the Brand petrochemical company, model number EP3T 56F-M.
In a preferred embodiment, the polylactic acid of the present invention is commercially available from a source including, but not limited to, Zhejiang Hainan biomaterial, Inc. under the REVODE190 designation.
Filler material
The filler of the invention generally refers to materials filled in other objects; in chemical products, the filler is also called filler, which is a solid material for improving the processing performance and the mechanical property of products and reducing the cost.
In a preferred embodiment, the filler of the present invention is selected from one or more of light calcium carbonate, wollastonite powder, talc, barium sulfate, pyrophyllite powder, kaolin, fly ash, silicon carbide, boron nitride and alumina.
In a preferred embodiment, the filler of the present invention is light calcium carbonate and talc powder, wherein the mass ratio of the light calcium carbonate to the talc powder is 1: (1-3).
In a most preferred embodiment, the filler of the present invention is light calcium carbonate and talc powder, wherein the mass ratio of the light calcium carbonate to the talc powder is 1: 2.
in a preferred embodiment, the particle size of the talc powder of the present invention is 1250-3000 mesh.
In a most preferred embodiment, the talc powder of the present invention has a particle size of 2000 mesh and is commercially available from a source including, but not limited to, Jiangsu Yifeng powder materials GmbH, model YF-888.
In a preferred embodiment, the light calcium carbonate of the present invention has a particle size of 800-2000 mesh.
In a most preferred embodiment, the light calcium carbonate of the present invention has a particle size of 1250 mesh and is commercially available from a manufacturer including, but not limited to, jiujiang new materials ltd.
Stabilizer
The stabilizer of the invention mainly refers to a reagent for keeping high polymer plastics, rubber, synthetic fibers and the like stable and preventing decomposition and aging of the high polymer plastics, rubber, synthetic fibers and the like.
In a preferred embodiment, the stabilizing agent of the present invention is selected from one or more of benzoic acid, cadmium laurate and zinc laurate.
In a most preferred embodiment, the stabilizing agent of the present invention is zinc laurate.
Coupling agent
The coupling agent is a substance with two functional groups with different properties, and the molecular structure of the coupling agent is mainly characterized in that molecules contain two groups with different chemical properties, one group is an inorganophilic group and is easy to react with the surface of an inorganic substance; the other is an organophilic group which is capable of chemically reacting with or forming hydrogen bonds soluble in synthetic resins or other polymers. Therefore, the coupling agent is called as a molecular bridge and is used for improving the interface action between inorganic matters and organic matters, so that the properties of the composite material, such as physical properties, electrical properties, thermal properties, optical properties and the like, are greatly improved.
In a preferred embodiment, the coupling agent of the present invention is selected from one or more of silane coupling agents, titanate coupling agents, and aluminate coupling agents.
As examples of the silane coupling agent, there may be mentioned vinyltrichlorosilane, propenyltriethoxysilane, vinyltrimethoxysilane, vinyltris (β -methoxyethoxysilane), gamma-methacryloyltrimethoxysilane, gamma-aminopropyltriethoxysilane, gamma-ethylenediaminotriethoxysilane, and ethylenediamine methyltriethoxysilane.
As examples of the titanate-based coupling agent, there may be mentioned: isopropyl tris (isostearoyl) titanate, isopropyl tris (dioctylphosphoryl) titanate, titanium dioctylphosphoryl oxoacetate, titanium dioctylphosphoryl ethylenetitanate, isopropyl bis (methacryloyl) isostearoyl titanate, isopropyl tris (dioctylphosphoryl) titanate, isopropyl tris (dodecylbenzenesulfonyl) titanate, and isopropyl tris (n-ethylamino) titanate.
In a preferred embodiment, the coupling agent of the present invention is a combination of gamma-aminopropyltriethoxysilane (CAS: 919-30-2) and isopropyltris (dodecylbenzenesulfonyl) titanate (CAS: 61417-55-8), wherein the mass ratio of gamma-aminopropyltriethoxysilane to isopropyltris (dodecylbenzenesulfonyl) titanate is 1: (0.5-2).
In a most preferred embodiment, the coupling agent of the present invention is a combination of gamma-aminopropyltriethoxysilane and isopropyltris (dodecylbenzenesulfonyl) titanate, wherein the mass ratio of gamma-aminopropyltriethoxysilane to isopropyltris (dodecylbenzenesulfonyl) titanate is 1: (1-1.8).
In a more preferred embodiment, the coupling agent of the present invention is a combination of gamma-aminopropyltriethoxysilane and isopropyltris (dodecylbenzenesulfonyl) titanate, wherein the mass ratio of gamma-aminopropyltriethoxysilane to isopropyltris (dodecylbenzenesulfonyl) titanate is 1: 1.5.
lubricant agent
The lubricant is used for reducing the friction resistance of a friction pair and slowing down the abrasion of the friction pair. The lubricant can also play a role in cooling, cleaning, pollution prevention and the like on the friction pair. Suitable additives may be added to certain lubricants in order to improve the lubricating properties. When the lubricant is selected, various factors such as the motion condition, material, surface roughness, working environment and working condition of the friction pair, the performance of the lubricant and the like are generally considered.
In a preferred embodiment, the lubricant according to the invention is selected from one or more of the group consisting of aluminium stearate, stearic acid, lithium stearate, oxidized polyethylene, lead stearate, zinc stearate, butyl stearate, polyethylene wax.
In a more preferred embodiment, the lubricant of the present invention is a combination of butyl stearate and polyethylene wax, wherein the mass ratio of butyl stearate to polyethylene wax is 1: (3-6).
In a more preferred embodiment, the lubricant of the present invention is a combination of butyl stearate and polyethylene wax, wherein the mass ratio of butyl stearate to polyethylene wax is 1: (3.5-5.5).
In a most preferred embodiment, the lubricant of the present invention is a combination of butyl stearate and polyethylene wax, wherein the mass ratio of butyl stearate to polyethylene wax is 1: 4.
plant starch
The plant starch is rich in starch and other saccharides, and is a high-molecular carbohydrate stored in plant bodies and can be decomposed into components such as glucose, maltose and the like.
In a preferred embodiment, the plant starch of the present invention is selected from one or more of rice starch, glutinous rice starch, corn starch, wheat starch, tapioca starch, potato starch, sweet potato starch, yam starch, mung bean starch, broad bean starch.
In a more preferred embodiment, the plant starch of the present invention is a combination of potato starch and wheat starch, wherein the mass ratio of potato starch to wheat starch is 1: (1.3-3.2).
In a more preferred embodiment, the plant starch of the present invention is a combination of potato starch and wheat starch, wherein the mass ratio of potato starch to wheat starch is 1: 1.6.
in experiments, the inventor of the application finds that the degradability of a plastic product is improved and environmental pollution is avoided by compounding polylactic acid, polyethylene and polypropylene, reasonably and effectively controlling the mass ratio of the polylactic acid, the polyethylene and the polypropylene and combining plant starch; the light calcium carbonate and the talcum powder are further added, and the particle size and the proportion of the light calcium carbonate and the talcum powder are regulated and controlled, so that the rigidity, the surface hardness, the dimensional stability and the impact strength of a plastic product can be obviously improved, and the nucleation crystallinity of a high polymer material can be improved; however, the dispersibility of the filler in a high polymer system is poor, and experiments show that the dispersibility is improved when the long-carbon-chain titanate coupling agent and the aminosilane coupling agent are compounded, and the probable reason is that the coupling agent can effectively reduce the surface energy of the filler, improve the dispersibility of an inorganic material in a high polymer material, reduce the viscosity of a filling system, increase the filling amount and further reduce the cost, and particularly the ratio of the coupling agent to the filler is controlled to be (2-7): (5-10), the dispersion effect of the filler is optimal; in addition, the molecular structure of the long carbon chain can be chemically crosslinked or physically wound with polymer molecules, and finally, the inorganic material and the polymer are well combined, so that the tensile strength, the elongation and the impact strength of the material are improved, but the content of the coupling agent is too much, so that the plastic product is easy to show unevenness and smoothness, and when the mass ratio of the gamma-aminopropyltriethoxysilane to the isopropyl tri (dodecylbenzenesulfonyl) titanate is controlled to be 1: (0.5-2), the smoothness and surface effect of the plastic product are better.
The second aspect of the invention provides a preparation method of an environment-friendly degradable plastic, which at least comprises the following steps: mixing and granulating the resin, the filler, the stabilizer, the coupling agent, the lubricant and the antibacterial agent, and then blowing and molding to obtain the composite material.
Examples
Example 1
Embodiment 1 provides an environment-friendly degradable plastic, which is prepared from 50 parts by weight of resin, 7 parts by weight of filler, 2 parts by weight of stabilizer, 4 parts by weight of coupling agent, 3 parts by weight of lubricant and 25 parts by weight of plant starch.
The resin is a combination of polylactic acid, polyethylene resin and polypropylene resin, wherein the mass ratio of the polylactic acid to the polyethylene resin to the polypropylene resin is 1: 2.6: 1.5.
the polyethylene is low-density polyethylene, and the manufacturer is China petrochemical group famous petrochemical company with the model number of M2607F.
The polypropylene resin purchasing manufacturer is China petrochemical group famous petrochemical company with the model number of EP3T 56F-M.
The polylactic acid purchasing manufacturer is Zhejiang Haizhen biomaterial GmbH, and the trade name is REVODE 190.
The filler is light calcium carbonate and talcum powder, wherein the mass ratio of the light calcium carbonate to the talcum powder is 1: 2.
the grain size of the light calcium carbonate is 1250 meshes.
The particle size of the talcum powder is 2000 meshes.
The stabilizing agent is zinc laurate.
The coupling agent is a combination of gamma-aminopropyltriethoxysilane and isopropyl tris (dodecylbenzenesulfonyl) titanate, wherein the mass ratio of the gamma-aminopropyltriethoxysilane to the isopropyl tris (dodecylbenzenesulfonyl) titanate is 1: 1.5.
the lubricant is a combination of butyl stearate and polyethylene wax, wherein the mass ratio of the butyl stearate to the polyethylene wax is 1: 4.
the plant starch is a combination of potato starch and wheat starch, wherein the mass ratio of the potato starch to the wheat starch is 1: 1.6.
example 2
Embodiment 2 provides an environment-friendly degradable plastic, which is prepared from 40 parts by weight of resin, 5 parts by weight of filler, 1 part by weight of stabilizer, 2 parts by weight of coupling agent, 2 parts by weight of lubricant and 20 parts by weight of plant starch.
The resin is a combination of polylactic acid, polyethylene resin and polypropylene resin, wherein the mass ratio of the polylactic acid to the polyethylene resin to the polypropylene resin is 1: 2.6: 1.5.
the polyethylene is low-density polyethylene, and the manufacturer is China petrochemical group famous petrochemical company with the model number of M2607F.
The polypropylene resin purchasing manufacturer is China petrochemical group famous petrochemical company with the model number of EP3T 56F-M.
The polylactic acid purchasing manufacturer is Zhejiang Haizhen biomaterial GmbH, and the trade name is REVODE 190.
The filler is light calcium carbonate and talcum powder, wherein the mass ratio of the light calcium carbonate to the talcum powder is 1: 2.
the grain size of the light calcium carbonate is 1250 meshes.
The particle size of the talcum powder is 2000 meshes.
The stabilizing agent is zinc laurate.
The coupling agent is a combination of gamma-aminopropyltriethoxysilane and isopropyl tris (dodecylbenzenesulfonyl) titanate, wherein the mass ratio of the gamma-aminopropyltriethoxysilane to the isopropyl tris (dodecylbenzenesulfonyl) titanate is 1: 1.5.
the lubricant is a combination of butyl stearate and polyethylene wax, wherein the mass ratio of the butyl stearate to the polyethylene wax is 1: 4.
the plant starch is a combination of potato starch and wheat starch, wherein the mass ratio of the potato starch to the wheat starch is 1: 1.6.
example 3
Embodiment 3 provides an environment-friendly degradable plastic, which is prepared from, by weight, 60 parts of resin, 10 parts of filler, 3 parts of stabilizer, 7 parts of coupling agent, 4 parts of lubricant and 30 parts of plant starch.
The resin is a combination of polylactic acid, polyethylene resin and polypropylene resin, wherein the mass ratio of the polylactic acid to the polyethylene resin to the polypropylene resin is 1: 2.6: 1.5.
the polyethylene is low-density polyethylene, and the manufacturer is China petrochemical group famous petrochemical company with the model number of M2607F.
The polypropylene resin purchasing manufacturer is China petrochemical group famous petrochemical company with the model number of EP3T 56F-M.
The polylactic acid purchasing manufacturer is Zhejiang Haizhen biomaterial GmbH, and the trade name is REVODE 190.
The filler is light calcium carbonate and talcum powder, wherein the mass ratio of the light calcium carbonate to the talcum powder is 1: 2.
the grain size of the light calcium carbonate is 1250 meshes.
The particle size of the talcum powder is 2000 meshes.
The stabilizing agent is zinc laurate.
The coupling agent is a combination of gamma-aminopropyltriethoxysilane and isopropyl tris (dodecylbenzenesulfonyl) titanate, wherein the mass ratio of the gamma-aminopropyltriethoxysilane to the isopropyl tris (dodecylbenzenesulfonyl) titanate is 1: 1.5.
the lubricant is a combination of butyl stearate and polyethylene wax, wherein the mass ratio of the butyl stearate to the polyethylene wax is 1: 4.
the plant starch is a combination of potato starch and wheat starch, wherein the mass ratio of the potato starch to the wheat starch is 1: 1.6.
example 4
Example 4 is similar to example 1 except that the coupling agent is isopropyl tris (dodecylbenzenesulfonyl) titanate.
Example 5
Example 5 is similar to example 1 except that the coupling agent is gamma-aminopropyltriethoxysilane.
Example 6
Example 6 is similar to example 1 except that the coupling agent is a combination of gamma-aminopropyltriethoxysilane and isopropyl tris (dodecylbenzenesulfonyl) titanate in a mass ratio of 1: 0.1.
example 7
Example 7 is similar to example 1 except that the coupling agent is a combination of gamma-aminopropyltriethoxysilane and isopropyl tris (dodecylbenzenesulfonyl) titanate in a mass ratio of 1: 3.
example 8
Example 8 is similar to example 1 except that the light calcium carbonate has a particle size of 2000 mesh.
Example 9
Example 9 is similar to example 1 except that the talc has a particle size of 800 mesh.
Example 10
Example 10 is similar to example 1, except that the filler is precipitated calcium carbonate and talc, wherein the mass ratio of precipitated calcium carbonate to talc is 1: 0.5.
example 11
Example 11 is similar to example 1, except that the filler is precipitated calcium carbonate and talc, wherein the mass ratio of precipitated calcium carbonate to talc is 1: 4.
evaluation of Performance
The environmentally friendly degradable plastics prepared in examples 1 to 11 were tested for tensile properties according to GB/T1040.3-2006, the results of which are shown in Table 1 below.
TABLE 1
| Elongation at break/% | Tensile Strength/N/mm2 | Breaking Strength/N/mm2 | |
| Example 1 | 420.5 | 4.3 | 4.5 |
| Example 2 | 415 | 4.0 | 4.2 |
| Example 3 | 413 | 4.1 | 4.0 |
| Example 4 | 320 | 2.6 | 3.0 |
| Example 5 | 315 | 2.4 | 2.6 |
| Example 6 | 375 | 3.4 | 3.0 |
| Example 7 | 380 | 3.2 | 3.1 |
| Example 8 | 329 | 2.8 | 2.9 |
| Example 9 | 325 | 2.7 | 2.8 |
| Example 10 | 405 | 3.8 | 3.7 |
| Example 11 | 401 | 3.6 | 3.4 |
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (10)
1. The environment-friendly degradable plastic is characterized by at least comprising the following preparation raw materials in parts by weight: 40-60 parts of resin, 5-10 parts of filler, 1-3 parts of stabilizer, 2-7 parts of coupling agent, 2-4 parts of lubricant and 20-30 parts of plant starch.
2. The environmentally friendly degradable plastic according to claim 1, wherein the resin is selected from one or more of polylactic acid, polyethylene resin, polypropylene resin, polystyrene resin, polyvinyl chloride resin, polytetrafluoroethylene, phenolic resin, polyester resin and polyamide resin.
3. The environment-friendly degradable plastic according to claim 2, wherein the resin is a combination of polylactic acid, polyethylene resin and polypropylene resin, and the mass ratio of the polylactic acid to the polyethylene resin to the polypropylene resin is 1: (1-4): (0.5-2.5).
4. The environment-friendly degradable plastic according to claim 1, wherein the filler is selected from one or more of light calcium carbonate, wollastonite powder, talcum powder, barium sulfate, pyrophyllite powder, kaolin, fly ash, silicon carbide, boron nitride and aluminum oxide.
5. The environment-friendly degradable plastic according to claim 1, wherein the stabilizer is selected from one or more of benzoic acid, cadmium laurate and zinc laurate.
6. The environment-friendly degradable plastic according to claim 1, wherein the coupling agent is selected from one or more of silane coupling agent, titanate coupling agent and aluminate coupling agent.
7. The environment-friendly degradable plastic according to claim 6, wherein the coupling agent is a combination of gamma-aminopropyltriethoxysilane and isopropyltris (dodecylbenzenesulfonyl) titanate, wherein the mass ratio of isopropyltris (dioctylphosphato) titanate to isopropyltris (dodecylbenzenesulfonyl) titanate is 1: (0.5-2).
8. The environmentally friendly degradable plastic according to claim 1, wherein the lubricant is selected from one or more of aluminum stearate, stearic acid, lithium stearate, oxidized polyethylene, lead stearate, zinc stearate, butyl stearate, polyethylene wax.
9. The environment-friendly degradable plastic as claimed in claim 1, wherein the plant starch is selected from one or more of rice starch, glutinous rice starch, corn starch, wheat starch, tapioca starch, potato starch, sweet potato starch, yam starch, mung bean starch and broad bean starch.
10. The method for preparing environmentally friendly and degradable plastic according to any one of claims 1 to 9, wherein the preparation method at least comprises the following steps: mixing and granulating the resin, the filler, the stabilizer, the coupling agent, the lubricant and the antibacterial agent, and then blowing and molding to obtain the composite material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911372766.1A CN111019222A (en) | 2019-12-27 | 2019-12-27 | Environment-friendly degradable plastic and preparation method thereof |
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| CN201911372766.1A CN111019222A (en) | 2019-12-27 | 2019-12-27 | Environment-friendly degradable plastic and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063149A (en) * | 2020-09-18 | 2020-12-11 | 深圳市百奥降解材料科技有限公司 | Degradable plastic with good stability and preparation method thereof |
| US20220192405A1 (en) * | 2020-12-17 | 2022-06-23 | Honey-Can-Do International, LLC | Wheat plastic clothes hanger |
| CN117304667A (en) * | 2023-11-03 | 2023-12-29 | 深圳前海蜗牛妈妈科技有限公司 | High-temperature-resistant PLA composite material and application thereof in preparation of packaging material |
-
2019
- 2019-12-27 CN CN201911372766.1A patent/CN111019222A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112063149A (en) * | 2020-09-18 | 2020-12-11 | 深圳市百奥降解材料科技有限公司 | Degradable plastic with good stability and preparation method thereof |
| US20220192405A1 (en) * | 2020-12-17 | 2022-06-23 | Honey-Can-Do International, LLC | Wheat plastic clothes hanger |
| CN117304667A (en) * | 2023-11-03 | 2023-12-29 | 深圳前海蜗牛妈妈科技有限公司 | High-temperature-resistant PLA composite material and application thereof in preparation of packaging material |
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