CN111909426A - Preparation method of full-biodegradable plastic garbage bag material - Google Patents
Preparation method of full-biodegradable plastic garbage bag material Download PDFInfo
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- CN111909426A CN111909426A CN202010814593.0A CN202010814593A CN111909426A CN 111909426 A CN111909426 A CN 111909426A CN 202010814593 A CN202010814593 A CN 202010814593A CN 111909426 A CN111909426 A CN 111909426A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F1/00—Refuse receptacles; Accessories therefor
- B65F1/0006—Flexible refuse receptables, e.g. bags, sacks
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- Manufacturing & Machinery (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
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- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides a preparation method of a full-biodegradable plastic garbage bag material, and relates to the technical field of biodegradable materials. The preparation method of the full-biodegradable plastic garbage bag material comprises the following raw materials in parts by weight: 40-50 parts of starch-based thermoplastic master batch, 50-60 parts of biodegradable high polymer and 2-10 parts of lubricant; the starch-based thermoplastic master batch comprises the following raw materials in parts by weight: 100-120 parts of plant starch, 10-30 parts of papermaking byproducts, 0.5-2 parts of lubricant, 1-3 parts of reaction auxiliary agent and 15-40 parts of plasticizer. According to the invention, starch is plasticized to prepare starch-based thermoplastic master batches, and then the starch-based thermoplastic master batches are mixed with other resins for granulation, the plasticized starch has many characteristics of plastic resins, and the compatibility with other plastic resins can be greatly increased, so that the addition amount can be increased, the addition amount can be increased to 40-50% according to the product requirements, the product compatibility is better, and the mechanical strength of the material can be obviously increased compared with the filling type addition mode in the prior art.
Description
Technical Field
The invention relates to the technical field of biodegradable materials, in particular to a preparation method of a full-biodegradable plastic garbage bag material.
Background
The plastic product brings convenience to human life and also brings serious threat to living environment. Because the polyolefin-based plastic is mainly prepared by taking polyolefin-based petroleum-based plastics (such as polyethylene, polypropylene and the like) as raw materials, the polyolefin-based products have long degradation time, are easy to generate white pollution, seriously damage the environment and harm the human health; in addition, plastics derived from petroleum resources are facing problems such as depletion of petroleum and increase in price, and with increasing awareness of environmental protection, how to treat plastic waste has become a global concern.
In contrast, environmental protection experts call for recycling of plastic products, but this involves processes such as sorting, washing, drying, crushing, and the like, which greatly increases the cost, and related legal regulations have been successively issued by related departments in various countries to limit the use of plastics, and although certain effects are achieved, the fundamental problems are not solved. The biodegradable high molecular material can be decomposed by microorganisms or enzymes in a short time and finally metabolized into CO2And H2O, does not cause any pollution to the environment,and can overcome the dependence on petroleum products. Therefore, the research and the popularization of the biodegradable material are the only way for developing the circular economy and realizing the sustainable development, and have very important social and economic values for the research.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a preparation method of a full-biodegradable plastic garbage bag material, which solves the defects and shortcomings in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a preparation method of a full-biodegradable plastic garbage bag material comprises the following raw materials in parts by weight: 40-50 parts of starch-based thermoplastic master batch, 50-60 parts of biodegradable high polymer and 2-10 parts of lubricant;
the starch-based thermoplastic master batch comprises the following raw materials in parts by weight: 100-120 parts of plant starch, 10-30 parts of papermaking byproducts, 0.5-2 parts of lubricant, 1-3 parts of reaction auxiliary agent and 15-40 parts of plasticizer;
the preparation method of the material comprises the following steps:
s1, preparing plant starch, papermaking byproducts, a lubricant, a reaction auxiliary agent and a plasticizer, and preparing starch-based thermoplastic masterbatch;
s2, uniformly mixing the starch-based thermoplastic master batch, the biodegradable high polymer and the lubricant, adding the mixture into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare the blown film material.
Preferably, the preparation of the starch-based thermoplastic masterbatch in the step 1 is as follows:
1) adding plant starch, papermaking byproducts, a lubricant, a reaction auxiliary agent and a plasticizer into a high-speed mixer, and uniformly mixing;
2) and adding the obtained mixture into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare the starch-based thermoplastic master batch.
Preferably, the mixing speed of the high-speed mixer is 2000-4000r/min, the mixing time is 10-30min, the working temperature of the extruder is 90-150 ℃ and the extrusion speed is 0.5-2m/min when the starch-based thermoplastic master batch is prepared.
Preferably, the mixing time in the step 2 is 10-30min, the mixing speed is 1000-2000r/min, the working temperature of the parallel co-rotating twin-screw extruder is 100-150 ℃, and the extrusion speed is 1-4 m/min.
Preferably, the material comprises the following raw materials in parts by weight: 45 parts of starch-based thermoplastic master batch, 55 parts of biodegradable high polymer and 6 parts of lubricant.
Preferably, the starch-based thermoplastic master batch comprises the following raw materials in parts by weight: 110 parts of plant starch, 20 parts of papermaking byproducts, 1.2 parts of lubricant, 2 parts of reaction auxiliary agent and 27 parts of plasticizer.
Preferably, the biodegradable high polymer consists of PBAT and PLA, and the mass ratio of PBAT to PLA is 1: 1.
(III) advantageous effects
The invention provides a preparation method of a full-biodegradable plastic garbage bag material. The method has the following beneficial effects:
1. according to the invention, starch is plasticized to prepare starch-based thermoplastic master batches, and then the starch-based thermoplastic master batches are mixed with other resins for granulation, the plasticized starch has many characteristics of plastic resins, and the compatibility with other plastic resins can be greatly increased, so that the addition amount can be increased, the addition amount can be increased to 40-50% according to the product requirements, the product compatibility is better, and the mechanical strength of the material can be obviously increased compared with the filling type addition mode in the prior art.
2. The invention optimizes the preparation method aiming at the problem of poor strength of the material film bag product produced by the prior art, thereby leading the produced material to be capable of improving the tensile strength of the full-biodegradable film to be more than 25 Mpa.
3. Aiming at the problem of high cost of the existing full-biodegradable product, the prepared product has larger starch addition amount, and simultaneously introduces a paper-making byproduct with low price, so that the cost of the full-biodegradable product can be reduced by about 30 percent.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides a preparation method of a full-biodegradable plastic garbage bag material, which comprises the following raw materials in parts by weight: 40 parts of starch-based thermoplastic master batch, 50 parts of biodegradable high polymer and 2 parts of lubricant, wherein the biodegradable high polymer consists of PBAT and PLA, and the mass ratio of the PBAT to the PLA is 1: 1;
wherein, the starch-based thermoplastic masterbatch comprises the following raw materials in parts by weight: 100 parts of plant starch, 10 parts of papermaking byproducts, 0.5 part of lubricant, 1 part of reaction auxiliary agent and 15 parts of plasticizer;
the preparation method of the material comprises the following steps:
s1, preparing plant starch, papermaking byproducts, a lubricant, a reaction auxiliary agent and a plasticizer, and preparing starch-based thermoplastic masterbatch;
the preparation of the starch-based thermoplastic master batch comprises the following steps:
1) adding the plant starch, the papermaking byproducts, the lubricant, the reaction auxiliary agent and the plasticizer into a high-speed mixer, and uniformly mixing, wherein the mixing speed of the high-speed mixer is 2000-4000r/min, and the mixing time is 10-30 min;
2) adding the obtained mixed material into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare starch-based thermoplastic master batches, wherein when the starch-based thermoplastic master batches are prepared, the working temperature of the extruder is 90-150 ℃, and the extrusion speed is 0.5-2 m/min;
s2, uniformly mixing the starch-based thermoplastic master batch, the biodegradable high polymer and the lubricant, adding the mixture into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare the blown film material, wherein the mixing time is 10-30min, the mixing speed is 1000-2000r/min, the working temperature of the parallel co-rotating double-screw extruder is 100-150 ℃, and the extrusion speed is 1-4 m/min.
The invention mainly utilizes the anionic surface activity of the papermaking byproduct to be adsorbed on the surface of a starch particle, active groups on the organization structure can generate condensation action and generate hydrogen bond action with starch, so as to be combined with the starch, the molecular arrangement mode is changed under the action of a plasticizer, the intermolecular acting force is weakened, the starch is sheared by a parallel co-rotating twin-screw extruder, and the conversion from non-plasticization processing to thermoplasticity processing is realized in a high-temperature and high-pressure environment, so that a uniform material is formed by plasticization and extrusion.
Example two:
the embodiment of the invention provides a preparation method of a full-biodegradable plastic garbage bag material, which comprises the following raw materials in parts by weight: 45 parts of starch-based thermoplastic master batch, 55 parts of biodegradable high polymer and 6 parts of lubricant, wherein the biodegradable high polymer consists of PBAT and PLA, and the mass ratio of the PBAT to the PLA is 1: 1;
wherein, the starch-based thermoplastic masterbatch comprises the following raw materials in parts by weight: 110 parts of plant starch, 20 parts of papermaking byproducts, 1.2 parts of lubricant, 2 parts of reaction auxiliary agent and 27 parts of plasticizer;
the preparation method of the material comprises the following steps:
s1, preparing plant starch, papermaking byproducts, a lubricant, a reaction auxiliary agent and a plasticizer, and preparing starch-based thermoplastic masterbatch;
the preparation of the starch-based thermoplastic master batch comprises the following steps:
1) adding the plant starch, the papermaking byproducts, the lubricant, the reaction auxiliary agent and the plasticizer into a high-speed mixer, and uniformly mixing, wherein the mixing speed of the high-speed mixer is 2000-4000r/min, and the mixing time is 10-30 min;
2) adding the obtained mixed material into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare starch-based thermoplastic master batches, wherein when the starch-based thermoplastic master batches are prepared, the working temperature of the extruder is 90-150 ℃, and the extrusion speed is 0.5-2 m/min;
s2, uniformly mixing the starch-based thermoplastic master batch, the biodegradable high polymer and the lubricant, adding the mixture into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare the blown film material, wherein the mixing time is 10-30min, the mixing speed is 1000-2000r/min, the working temperature of the parallel co-rotating double-screw extruder is 100-150 ℃, and the extrusion speed is 1-4 m/min.
Example three:
the embodiment of the invention provides a preparation method of a full-biodegradable plastic garbage bag material, which comprises the following raw materials in parts by weight: 50 parts of starch-based thermoplastic master batch, 60 parts of biodegradable high polymer and 10 parts of lubricant, wherein the biodegradable high polymer consists of PBAT and PLA, and the mass ratio of the PBAT to the PLA is 1: 1;
wherein, the starch-based thermoplastic masterbatch comprises the following raw materials in parts by weight: 120 parts of plant starch, 30 parts of papermaking byproducts, 2 parts of lubricant, 3 parts of reaction auxiliary agent and 40 parts of plasticizer;
the preparation method of the material comprises the following steps:
s1, preparing plant starch, papermaking byproducts, a lubricant, a reaction auxiliary agent and a plasticizer, and preparing starch-based thermoplastic masterbatch;
the preparation of the starch-based thermoplastic master batch comprises the following steps:
1) adding the plant starch, the papermaking byproducts, the lubricant, the reaction auxiliary agent and the plasticizer into a high-speed mixer, and uniformly mixing, wherein the mixing speed of the high-speed mixer is 2000-4000r/min, and the mixing time is 10-30 min;
2) adding the obtained mixed material into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare starch-based thermoplastic master batches, wherein when the starch-based thermoplastic master batches are prepared, the working temperature of the extruder is 90-150 ℃, and the extrusion speed is 0.5-2 m/min;
s2, uniformly mixing the starch-based thermoplastic master batch, the biodegradable high polymer and the lubricant, adding the mixture into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare the blown film material, wherein the mixing time is 10-30min, the mixing speed is 1000-2000r/min, the working temperature of the parallel co-rotating double-screw extruder is 100-150 ℃, and the extrusion speed is 1-4 m/min.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A preparation method of a full-biodegradable plastic garbage bag material is characterized by comprising the following steps: the material comprises the following raw materials in parts by weight: 40-50 parts of starch-based thermoplastic master batch, 50-60 parts of biodegradable high polymer and 2-10 parts of lubricant;
the starch-based thermoplastic master batch comprises the following raw materials in parts by weight: 100-120 parts of plant starch, 10-30 parts of papermaking byproducts, 0.5-2 parts of lubricant, 1-3 parts of reaction auxiliary agent and 15-40 parts of plasticizer;
the preparation method of the material comprises the following steps:
s1, preparing plant starch, papermaking byproducts, a lubricant, a reaction auxiliary agent and a plasticizer, and preparing starch-based thermoplastic masterbatch;
s2, uniformly mixing the starch-based thermoplastic master batch, the biodegradable high polymer and the lubricant, adding the mixture into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare the blown film material.
2. The method for preparing the material of the full biodegradable plastic garbage bag according to claim 1, wherein the method comprises the following steps: the preparation of the starch-based thermoplastic masterbatch in the step 1 is specifically as follows:
1) adding plant starch, papermaking byproducts, a lubricant, a reaction auxiliary agent and a plasticizer into a high-speed mixer, and uniformly mixing;
2) and adding the obtained mixture into a parallel co-rotating double-screw extruder for plasticizing and granulating to prepare the starch-based thermoplastic master batch.
3. The method for preparing the material of the full biodegradable plastic garbage bag according to claim 2, wherein the method comprises the following steps: the mixing speed of the high-speed mixer is 2000-4000r/min, the mixing time is 10-30min, the working temperature of the extruder is 90-150 ℃ and the extrusion speed is 0.5-2m/min when the starch-based thermoplastic master batch is prepared.
4. The method for preparing the material of the full biodegradable plastic garbage bag according to claim 1, wherein the method comprises the following steps: the mixing time in the step 2 is 10-30min, the mixing speed is 2000r/min, the working temperature of the parallel co-rotating twin-screw extruder is 100-150 ℃, and the extrusion speed is 1-4 m/min.
5. The method for preparing the material of the full biodegradable plastic garbage bag according to claim 1, wherein the method comprises the following steps: the material comprises the following raw materials in parts by weight: 45 parts of starch-based thermoplastic master batch, 55 parts of biodegradable high polymer and 6 parts of lubricant.
6. The method for preparing the material of the full biodegradable plastic garbage bag according to claim 1, wherein the method comprises the following steps: the starch-based thermoplastic master batch comprises the following raw materials in parts by weight: 110 parts of plant starch, 20 parts of papermaking byproducts, 1.2 parts of lubricant, 2 parts of reaction auxiliary agent and 27 parts of plasticizer.
7. The method for preparing the material of the full biodegradable plastic garbage bag according to claim 1, wherein the method comprises the following steps: the biodegradable high polymer consists of PBAT and PLA, and the mass ratio of the PBAT to the PLA is 1: 1.
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| CN202010814593.0A CN111909426A (en) | 2020-08-13 | 2020-08-13 | Preparation method of full-biodegradable plastic garbage bag material |
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Citations (6)
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| CN108794816A (en) * | 2018-07-03 | 2018-11-13 | 寿光金远东变性淀粉有限公司 | A kind of biomass thermal plastic composite materials and preparation method thereof |
| CN110396283A (en) * | 2019-07-12 | 2019-11-01 | 上海昶法新材料有限公司 | A kind of biodegradable articles and preparation method thereof |
| CN110408180A (en) * | 2019-08-19 | 2019-11-05 | 南京工业大学 | A kind of Biodegradable polyester material and preparation method thereof that lignin-starch composition master batch is compound |
| CN110894344A (en) * | 2018-09-12 | 2020-03-20 | 上海昶法新材料有限公司 | Papermaking waste modified antibacterial degradable garbage bag and preparation method thereof |
| CN111073228A (en) * | 2019-12-27 | 2020-04-28 | 上海昶法新材料有限公司 | Biodegradable garbage bag and preparation method thereof |
-
2020
- 2020-08-13 CN CN202010814593.0A patent/CN111909426A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108285622A (en) * | 2018-02-05 | 2018-07-17 | 东莞市鑫海环保材料有限公司 | Biodegradable material and preparation method thereof |
| CN108794816A (en) * | 2018-07-03 | 2018-11-13 | 寿光金远东变性淀粉有限公司 | A kind of biomass thermal plastic composite materials and preparation method thereof |
| CN110894344A (en) * | 2018-09-12 | 2020-03-20 | 上海昶法新材料有限公司 | Papermaking waste modified antibacterial degradable garbage bag and preparation method thereof |
| CN110396283A (en) * | 2019-07-12 | 2019-11-01 | 上海昶法新材料有限公司 | A kind of biodegradable articles and preparation method thereof |
| CN110408180A (en) * | 2019-08-19 | 2019-11-05 | 南京工业大学 | A kind of Biodegradable polyester material and preparation method thereof that lignin-starch composition master batch is compound |
| CN111073228A (en) * | 2019-12-27 | 2020-04-28 | 上海昶法新材料有限公司 | Biodegradable garbage bag and preparation method thereof |
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Application publication date: 20201110 |