CN112852059A - Biological degradation agent and preparation method thereof - Google Patents
Biological degradation agent and preparation method thereof Download PDFInfo
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- CN112852059A CN112852059A CN202110198866.8A CN202110198866A CN112852059A CN 112852059 A CN112852059 A CN 112852059A CN 202110198866 A CN202110198866 A CN 202110198866A CN 112852059 A CN112852059 A CN 112852059A
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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
- 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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- 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
- C08L2201/06—Biodegradable
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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
- C08L2205/02—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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- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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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)
- Fertilizers (AREA)
Abstract
The invention provides a biodegradation agent, which comprises 2-6% of manganese stearate, 0.4-1.2% of ferric stearate, 5-10% of copper stearate, 0.04-0.4% of silane coupling agent, 90-70% of low-density polyethylene or polypropylene and 0.06-0.5% of fertilizing agent. After the biodegradable additive is added, various performance indexes of the non-degradable conventional plastic meet the requirements when the non-degradable conventional plastic is used, the non-degradable conventional plastic can be quickly decomposed after the service life is over, and the mulching film can be completely degraded, so that the occurrence of white pollution is avoided, and meanwhile, the mulching film can have a certain fertilizing effect on the land after being degraded by adding the fertilizing agent.
Description
Technical Field
The invention mainly relates to the technical field of biodegradation, and particularly relates to a biodegradation agent and a preparation method thereof.
Background
Mulching films, i.e., ground covering films, are generally transparent or black polyethylene films, and also have green or silver films, and are used for ground covering to increase the temperature of soil, maintain the moisture of soil, maintain the structure of soil, prevent pests from attacking crops and diseases caused by certain microorganisms, and the like, and promote the growth of plants.
The traditional agricultural mulching film is difficult to degrade, the residual mulching film can block moisture transmission in soil and hinder root growth, the growth of crops is poor, great soil environment pollution is caused, the degradable mulching film can well solve the problems, but the degradation of the existing degradable mulching film is not thorough, so that the development of a biodegradation agent capable of completely degrading the mulching film is needed for the production of the mulching film.
Disclosure of Invention
The invention mainly provides a biodegradation agent and a preparation method thereof, which are used for solving the technical problems in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a biodegradation agent comprises manganese stearate, ferric stearate, copper stearate, silane coupling agent, low density polyethylene or polypropylene and fertility intensifier;
the manganese stearate accounts for 2-6% of the total weight of the biodegradation agent;
the usage of the ferric stearate accounts for 0.4-1.2% of the total weight of the biodegradation agent;
the use of the copper stearate accounts for 5-10% of the total weight of the biodegradation agent;
the use of the silane coupling agent accounts for 0.04 to 0.4 percent of the total weight of the biodegradation agent;
the low-density polyethylene or polypropylene accounts for 90-70% of the total weight of the biodegradation agent;
the fertilizer enhancer is used in an amount of 0.06-0.5% of the total weight of the biodegradation agent.
Further, the fertilizer synergist comprises potassium humate, magnesium humate and casein;
the potassium humate accounts for 20-40% of the total weight of the fertilizer enhancer;
the magnesium humate accounts for 20-40% of the total weight of the fertilizer enhancer;
the casein is used in 60-40 wt% of the fertilizer synergist.
Furthermore, the particle sizes of the copper stearate, the manganese stearate, the iron stearate, the potassium humate, the magnesium humate and the casein are all below 2 microns.
A preparation method of a biodegradation agent comprises the following steps:
s1: weighing the components in proportion;
s2: carrying out surface treatment on the copper stearate by using a silane coupling agent;
s3: putting the copper stearate, the manganese stearate, the iron stearate, the potassium humate, the magnesium humate, the casein and the low-density polyethylene which are subjected to the step S2 into a high-speed mixing device, and stirring and mixing to obtain a uniformly mixed material;
s4: granulating the material uniformly mixed in the step S3 by using a double-screw granulator;
s5: and naturally cooling the particles subjected to the S4, and then sealing and containing the particles by using an iron bucket lined with a plastic film.
Further, in the step S3, the rotation speed of the high-speed mixing device is 750rpm, the temperature is 60 ℃, and the mixing time is 15 minutes.
Further, in the step S4, the twin-screw pelletizer has an aspect ratio of 40, the temperature of the second zone is set to the highest temperature, i.e., 180 ℃, and the set temperature is maintained, the temperature of the first zone is set to be 10 ℃ lower than the temperature of the second zone, the temperatures of the third zone and the fourth zone are set to be the same as the temperature of the second zone, and the temperatures of the head are gradually decreased in a gradient from the fifth zone to the head, and the temperature of the head is maintained at a constant temperature.
Compared with the prior art, the invention has the beneficial effects that:
the biodegradable additive can endow various plastic products with biodegradable performance, namely, after the biodegradable additive is added, the nondegradable conventional plastic meets the requirements of various performance indexes in use, can be rapidly decomposed after the service life is over, and can completely degrade the mulching film, so that the occurrence of white pollution is avoided, and meanwhile, the mulching film can have a certain fertilizing effect on the land after being degraded by adding the fertilizing agent.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
The composition of the biological degradation agent comprises manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polypropylene and a fertility intensifier;
the use of manganese stearate accounts for 2% of the total weight of the biodegradation agent;
the usage of ferric stearate accounts for 0.4 percent of the total weight of the biodegradation agent;
the use of copper stearate accounts for 5% of the total weight of the biodegradation agent;
the use of the silane coupling agent accounts for 0.04 percent of the total weight of the biodegradation agent;
the use of low-density polypropylene accounts for 92.5 percent of the total weight of the biodegradation agent;
the fertilizer enhancer is 0.06 percent of the total weight of the biodegradation agent.
Wherein the fertilizer synergist comprises potassium humate, magnesium humate and casein;
the use of potassium humate accounts for 20 percent of the total weight of the fertilizer enhancer;
the usage of the magnesium humate accounts for 20 percent of the total weight of the fertilizer enhancer;
the use of casein accounts for 60 percent of the total weight of the fertilizer enhancer;
preparing a biodegradation agent, namely weighing the components of manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polypropylene, potassium humate, magnesium humate and casein according to a proportion, performing surface treatment on the copper stearate by using the silane coupling agent, and putting the treated copper stearate, the treated manganese stearate, the treated iron stearate, the treated potassium humate, the treated magnesium humate, the treated casein and the low-density polypropylene into a high-speed mixing device to be stirred and mixed to prepare a uniformly mixed material;
the rotating speed of the high-speed mixing equipment is 750rpm, the temperature is 60 ℃, the mixing time is 15 minutes, the materials mixed by the high-speed mixing equipment are made into particles with uniform size through a double-screw granulator, and finally, the particles are hermetically contained by an iron barrel lined with a plastic film.
Example 2
The composition of the biological degradation agent comprises manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene and a fertilizer enhancer;
the use of manganese stearate accounts for 3% of the total weight of the biodegradation agent;
the usage of ferric stearate accounts for 0.6 percent of the total weight of the biodegradation agent;
the use of copper stearate accounts for 6% of the total weight of the biodegradation agent;
the use of the silane coupling agent accounts for 0.1 percent of the total weight of the biodegradation agent;
the use of low density polyethylene accounts for 90.1% of the total weight of the biodegradation agent;
the fertilizer enhancer is 0.2% of the total weight of the biodegradation agent.
Wherein the fertilizer synergist comprises potassium humate, magnesium humate and casein;
the use of potassium humate accounts for 30 percent of the total weight of the fertilizer enhancer;
the usage of the magnesium humate accounts for 20 percent of the total weight of the fertilizer enhancer;
the casein is used in 50% of the total weight of the fertilizer enhancer;
preparing a biodegradation agent, namely weighing the components of manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene, potassium humate, magnesium humate and casein according to a proportion, performing surface treatment on the copper stearate by using the silane coupling agent, and putting the treated copper stearate, the treated manganese stearate, the treated iron stearate, the treated potassium humate, the treated magnesium humate, the treated casein and the low-density polyethylene into a high-speed mixing device to be stirred and mixed to prepare a uniformly mixed material;
the rotating speed of the high-speed mixing equipment is 600rpm, the temperature is 80 ℃, the mixing time is 10 minutes, the materials mixed by the high-speed mixing equipment are made into particles with uniform size through a double-screw granulator, and finally, the particles are hermetically contained by an iron barrel lined with a plastic film.
Example 3
The composition of the biological degradation agent comprises manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene and a fertilizer enhancer;
the use of manganese stearate accounts for 3% of the total weight of the biodegradation agent;
the usage of ferric stearate accounts for 0.6 percent of the total weight of the biodegradation agent;
the use of copper stearate accounts for 10% of the total weight of the biodegradation agent;
the use of the silane coupling agent accounts for 0.3 percent of the total weight of the biodegradation agent;
the use of low density polyethylene accounts for 85.8% of the total weight of the biodegradation agent;
the fertilizer enhancer is 0.3% of the total weight of the biodegradation agent.
Wherein the fertilizer synergist comprises potassium humate, magnesium humate and casein;
the use of potassium humate accounts for 20 percent of the total weight of the fertilizer enhancer;
the usage of the magnesium humate accounts for 20 percent of the total weight of the fertilizer enhancer;
the use of casein accounts for 60 percent of the total weight of the fertilizer enhancer;
preparing a biodegradation agent, namely weighing the components of manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene, potassium humate, magnesium humate and casein according to a proportion, performing surface treatment on the copper stearate by using the silane coupling agent, and putting the treated copper stearate, the treated manganese stearate, the treated iron stearate, the treated potassium humate, the treated magnesium humate, the treated casein and the low-density polyethylene into a high-speed mixing device to be stirred and mixed to prepare a uniformly mixed material;
the rotating speed of the high-speed mixing equipment is 800rpm, the temperature is 30 ℃, the mixing time is 20 minutes, the materials mixed by the high-speed mixing equipment are made into particles with uniform size through a double-screw granulator, and finally, the particles are hermetically contained by an iron barrel lined with a plastic film.
Example 4
The composition of the biological degradation agent comprises manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene and a fertilizer enhancer;
the use of manganese stearate accounts for 6 percent of the total weight of the biodegradation agent;
the usage of ferric stearate accounts for 1.2 percent of the total weight of the biodegradation agent;
the use of copper stearate accounts for 10% of the total weight of the biodegradation agent;
the use of the silane coupling agent accounts for 0.4 percent of the total weight of the biodegradation agent;
the use of low density polyethylene accounts for 81.9% of the total weight of the biodegradation agent;
the fertilizer enhancer is 0.5% of the total weight of the biodegradation agent.
Wherein the fertilizer synergist comprises potassium humate, magnesium humate and casein;
the use of potassium humate accounts for 30 percent of the total weight of the fertilizer enhancer;
the usage of the magnesium humate accounts for 40 percent of the total weight of the fertilizer enhancer;
the casein is used in 30% of the total weight of the fertilizer enhancer;
preparing a biodegradation agent, namely weighing the components of manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene, potassium humate, magnesium humate and casein according to a proportion, performing surface treatment on the copper stearate by using the silane coupling agent, and putting the treated copper stearate, the treated manganese stearate, the treated iron stearate, the treated potassium humate, the treated magnesium humate, the treated casein and the low-density polyethylene into a high-speed mixing device to be stirred and mixed to prepare a uniformly mixed material;
the rotating speed of the high-speed mixing equipment is 1000rpm, the temperature is 40 ℃, the mixing time is 10 minutes, the materials mixed by the high-speed mixing equipment are made into particles with uniform size through a double-screw granulator, and finally, the particles are hermetically contained by an iron barrel lined with a plastic film.
Example 5
The composition of the biological degradation agent comprises manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene and a fertilizer enhancer;
the use of manganese stearate accounts for 5% of the total weight of the biodegradation agent;
the usage of ferric stearate accounts for 1 percent of the total weight of the biodegradation agent;
the use of copper stearate accounts for 8% of the total weight of the biodegradation agent;
the use of the silane coupling agent accounts for 0.3 percent of the total weight of the biodegradation agent;
the use of low density polyethylene accounts for 15.2% of the total weight of the biodegradation agent;
the fertilizer enhancer is 0.5% of the total weight of the biodegradation agent.
Wherein the fertilizer synergist comprises potassium humate, magnesium humate and casein;
the use of potassium humate accounts for 30 percent of the total weight of the fertilizer enhancer;
the usage of the magnesium humate accounts for 10 percent of the total weight of the fertilizer enhancer;
the use of casein accounts for 60 percent of the total weight of the fertilizer enhancer;
preparing a biodegradation agent, namely weighing the components of manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene, potassium humate, magnesium humate and casein according to a proportion, performing surface treatment on the copper stearate by using the silane coupling agent, and putting the treated copper stearate, the treated manganese stearate, the treated iron stearate, the treated potassium humate, the treated magnesium humate, the treated casein and the low-density polyethylene into a high-speed mixing device to be stirred and mixed to prepare a uniformly mixed material;
the rotating speed of the high-speed mixing equipment is 100rpm, the temperature is 40 ℃, the mixing time is 30 minutes, the materials mixed by the high-speed mixing equipment are made into particles with uniform size through a double-screw granulator, and finally, the particles are hermetically contained by an iron barrel lined with a plastic film.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that the present embodiments be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A biodegradation agent is characterized by comprising manganese stearate, ferric stearate, copper stearate, a silane coupling agent, low-density polyethylene or polypropylene and a fertility intensifier;
the manganese stearate accounts for 2-6% of the total weight of the biodegradation agent;
the usage of the ferric stearate accounts for 0.4-1.2% of the total weight of the biodegradation agent;
the use of the copper stearate accounts for 5-10% of the total weight of the biodegradation agent;
the use of the silane coupling agent accounts for 0.04 to 0.4 percent of the total weight of the biodegradation agent;
the low-density polyethylene or polypropylene accounts for 90-70% of the total weight of the biodegradation agent;
the fertilizer enhancer is used in an amount of 0.06-0.5% of the total weight of the biodegradation agent.
2. The biodegradation agent and the preparation method thereof according to claim 1, wherein said fertilizer enhancing agent comprises potassium humate, magnesium humate and casein;
the potassium humate accounts for 20-40% of the total weight of the fertilizer enhancer;
the magnesium humate accounts for 20-40% of the total weight of the fertilizer enhancer;
the casein is used in 60-40 wt% of the fertilizer synergist.
3. The biodegradation agent and the preparation method thereof according to claim 1, wherein the particle size of copper stearate, manganese stearate, iron stearate, potassium humate, magnesium humate and casein is less than 2 microns.
4. A preparation method of a biodegradation agent is characterized by comprising the following steps:
s1: weighing the components in proportion;
s2: carrying out surface treatment on the copper stearate by using a silane coupling agent;
s3: putting the copper stearate, the manganese stearate, the iron stearate, the potassium humate, the magnesium humate, the casein and the low-density polyethylene which are subjected to the step S2 into a high-speed mixing device, and stirring and mixing to obtain a uniformly mixed material;
s4: granulating the material uniformly mixed in the step S3 by using a double-screw granulator;
s5: and naturally cooling the particles subjected to the S4, and then sealing and containing the particles by using an iron bucket lined with a plastic film.
5. The biodegradation agent and the preparation method thereof according to claim 4, wherein in step S3, the rotation speed of the high speed mixing device is 750rpm, the temperature is 60 ℃, and the mixing time is 15 minutes.
6. The biodegradable agent and the process for preparing the same as claimed in claim 4, wherein in said step S4, the length to diameter ratio of said twin-screw pelletizer is 40, the temperature of the second zone is set to the highest temperature, i.e. 180 ℃ and the set temperature is maintained, the temperature of the first zone is set to be 10 ℃ lower than that of the second zone, the temperatures of the third zone and the fourth zone are set to be the same as that of the second zone, and the temperature of the head is maintained at a constant temperature by gradually decreasing the temperature from the fifth zone to the head.
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| CN202110198866.8A CN112852059A (en) | 2021-02-23 | 2021-02-23 | Biological degradation agent and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947179A (en) * | 2017-02-22 | 2017-07-14 | 阳光盛景（北京）生态科技股份有限公司 | A kind of degradative plastic film for filler of being degraded containing string |
| CN108219261A (en) * | 2018-01-26 | 2018-06-29 | 北京国瑞新源投资有限公司 | A kind of degradation material and preparation method thereof, degradable films and preparation method thereof |
| CN108811993A (en) * | 2018-07-10 | 2018-11-16 | 成都工业学院 | Mulch and its preparation method and application |
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- 2021-02-23 CN CN202110198866.8A patent/CN112852059A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106947179A (en) * | 2017-02-22 | 2017-07-14 | 阳光盛景（北京）生态科技股份有限公司 | A kind of degradative plastic film for filler of being degraded containing string |
| CN108219261A (en) * | 2018-01-26 | 2018-06-29 | 北京国瑞新源投资有限公司 | A kind of degradation material and preparation method thereof, degradable films and preparation method thereof |
| CN108811993A (en) * | 2018-07-10 | 2018-11-16 | 成都工业学院 | Mulch and its preparation method and application |
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Application publication date: 20210528 |