CN112549593A - Preparation process of polymer plastic film - Google Patents
Preparation process of polymer plastic film Download PDFInfo
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- CN112549593A CN112549593A CN202011274201.2A CN202011274201A CN112549593A CN 112549593 A CN112549593 A CN 112549593A CN 202011274201 A CN202011274201 A CN 202011274201A CN 112549593 A CN112549593 A CN 112549593A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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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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- 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
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- 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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/04—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to rubbers
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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
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- 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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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
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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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
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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
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
Abstract
The invention discloses a preparation process of a polymer plastic film, which has the technical scheme key points that: the preparation process of the polymer plastic film specifically comprises the following steps: step one, preparing raw materials: weighing 80-100 parts of polypropylene, 20-40 parts of polyethylene, 2-4 parts of antioxidant, 1-1.5 parts of coupling agent, 3-5 parts of surfactant, 10-12 parts of toughening agent, 8-10 parts of montmorillonite powder, 2-5 parts of lubricant and 12-15 parts of degradable material according to the mass parts; step two, mixing raw materials: placing polypropylene, polyethylene, a coupling agent, an antioxidant and a toughening agent into a stirrer according to parts by weight for mixing, so that all materials are fully dispersed and mixed; the added toughening agent improves the toughening effect, the thermal deformation temperature is unchanged or slightly reduced, the impact resistance is obviously improved, and the added degradation material ensures that the film has the functions and characteristics of the traditional plastic, can be split and degraded in the natural environment after the service life is reached, and is beneficial to environmental protection.
Description
Technical Field
The invention relates to the technical field of plastic film production and processing, in particular to a preparation process of a high-molecular plastic film.
Background
Films made from polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins are used for packaging, and as a film coating. Plastic packages and plastic package products have a larger share in the market, and particularly, composite plastic flexible packages are widely applied to the fields of food, medicine, chemical industry and the like, wherein the proportion of the plastic packages is the largest, such as beverage packages, quick-frozen food packages, steamed and cooked food packages, fast food packages and the like, and the plastic packages and the plastic package products bring great convenience to the life of people.
For example, chinese patent No. CN103965558A discloses a process for preparing an antioxidant plastic film, which comprises the following steps: a. adding polystyrene and polycarbonate into a stirrer by using a high-speed stirrer, starting the stirrer, heating to 80 ℃, adding an accelerator, a plasticizer and an antioxidant, continuing to stir at high temperature, heating to 120 ℃, adding pentaerythritol and cedar wood oil, uniformly stirring, cooling and discharging for later use to obtain a spare material; b. adding the standby materials into a double-screw extruder, heating and extruding for forming at the working temperature of 120-.
The preparation process of the plastic film has the advantages of good oxidation resistance, long service life and cost saving; however, the above-mentioned manufacturing process of plastic films still has some disadvantages, such as: the film can not be degraded after long use, so that the environment is polluted, and the toughness of the film is lower.
Disclosure of Invention
The invention aims to provide a preparation process of a high polymer plastic film, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the preparation process of the polymer plastic film specifically comprises the following steps:
step one, preparing raw materials: weighing 80-100 parts of polypropylene, 20-40 parts of polyethylene, 2-4 parts of antioxidant, 1-1.5 parts of coupling agent, 3-5 parts of surfactant, 10-12 parts of toughening agent, 8-10 parts of montmorillonite powder, 2-5 parts of lubricant and 12-15 parts of degradable material according to the mass parts;
step two, mixing raw materials: placing polypropylene, polyethylene, a coupling agent, an antioxidant and a toughening agent into a stirrer according to parts by weight for mixing, so that all materials are fully dispersed and mixed;
step three, crushing raw materials: putting the fully mixed raw materials in the step two into a crusher for crushing, and screening to obtain a bottom material after crushing;
step four, primary stirring and heating the raw materials: putting the bottom materials obtained in the third step and the surfactant in parts by weight into a stirrer for high-speed mixing and heating stirring;
step five, secondary stirring and heating of the raw materials: continuously adding the toughening agent and the montmorillonite powder in parts by weight into the step four, putting the mixture into the stirrer again for high-speed mixing, heating and stirring to obtain a premix;
step six, high-temperature melting: continuously stirring the premix and the degradable material according to the weight part in a stirrer for antipyresis until the premix and the degradable material are molten liquid;
step seven, blow molding: sending the molten liquid into a blow molding machine, adjusting the pressure and thickness of blow molding, obtaining a film through a blow molding machine, and cooling the film.
Preferably, the surfactant is one of a natural polymer surfactant or a synthetic polymer surfactant.
Preferably, the coupling agent is one of chromium complex coupling, silane coupling agent and titanate coupling agent.
Preferably, the toughening agent is one of maleic anhydride-EVA, maleic anhydride-SBS and maleic anhydride-EPDM.
Preferably, the antioxidant is one of a 2-methyl-4-hydroxy-5-tert-butylphenyl antioxidant, a dilauryl thiodipropionate antioxidant and a tris (nonylphenyl) phosphite antioxidant.
Preferably, the degradable material is formed by mixing polylactic acid, biodegradable PET and polybutylene succinate/hexanoate, and the mass ratio of the polylactic acid to the biodegradable PET to the polybutylene succinate/hexanoate is 2: 3: 1.
preferably, in the third step, the pulverizer pulverizes for 3 to 5 minutes, and filters through a sieve of 80 to 110 meshes.
Preferably, the rotation speed of the stirrer in the step five is 500-700 rpm, and the heating temperature is 80-100 ℃.
Preferably, in the sixth step, the temperature for high-temperature melting is 260-280 ℃.
Preferably, the pressure of the blowing in the sixth step is 0.8-1.0MPa, and the thickness of the plastic film is 4-8 filaments.
Compared with the prior art, the invention has the beneficial effects that:
in the preparation process of the polymer plastic film, the coupling agent added in the processing process can reduce the viscosity of a melt, improve the dispersion degree of the filler to improve the processing performance, further ensure that a product obtains good surface quality and mechanical performance, the added toughening agent improves the toughening effect, ensures that the thermal deformation temperature is unchanged or slightly reduced, obviously improves the impact resistance, and the added degradation material ensures that the film has the functions and characteristics of the traditional plastic and can split and degrade in the natural environment through the action of microorganisms in soil and water or the action of ultraviolet rays in sunlight after the service life is reached, and finally enters the ecological environment again in a reduction form to reduce the environmental pollution.
Drawings
FIG. 1 is a block diagram of the process flow of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings 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 of the 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.
Example 1.
The preparation process of the polymer plastic film specifically comprises the following steps:
step one, preparing raw materials: weighing 80 parts of polypropylene, 20 parts of polyethylene, 2 parts of antioxidant, 1-part of coupling agent, 3 parts of surfactant, 10 parts of toughening agent, 8 parts of montmorillonite powder, 2 parts of lubricant and 12 parts of degradable material according to the mass parts;
step two, mixing raw materials: placing polypropylene, polyethylene, a coupling agent, an antioxidant and a toughening agent into a stirrer according to parts by weight for mixing, so that all materials are fully dispersed and mixed;
step three, crushing raw materials: putting the fully mixed raw materials in the step two into a crusher for crushing, and screening to obtain a bottom material after crushing;
step four, primary stirring and heating the raw materials: putting the bottom materials obtained in the third step and the surfactant in parts by weight into a stirrer for high-speed mixing and heating stirring;
step five, secondary stirring and heating of the raw materials: continuously adding the toughening agent and the montmorillonite powder in parts by weight into the step four, putting the mixture into the stirrer again for high-speed mixing, heating and stirring to obtain a premix;
step six, high-temperature melting: continuously stirring the premix and the degradable material according to the weight part in a stirrer for antipyresis until the premix and the degradable material are molten liquid;
step seven, blow molding: sending the molten liquid into a blow molding machine, adjusting the pressure and thickness of blow molding, obtaining a film through a blow molding machine, and cooling the film.
In this embodiment, the surfactant is preferably a natural polymer surfactant.
In this embodiment, preferably, the coupling agent is a chromium complex coupling.
In this embodiment, preferably, the toughening agent is maleic anhydride grafted EVA.
In this embodiment, the antioxidant is preferably 2-methyl-4-hydroxy-5-tert-butylphenyl antioxidant.
In this embodiment, preferably, the degradable material is formed by mixing polylactic acid, biodegradable PET, and polybutylene succinate/hexanoate, and a mass ratio of the polylactic acid to the biodegradable PET to the polybutylene succinate/hexanoate is 2: 3: 1.
in this embodiment, preferably, in the third step, the pulverizer pulverizes for 3 minutes, and filters the pulverized material through a 80-mesh sieve.
In this embodiment, preferably, in the fifth step, the rotation speed of the stirrer is 500 rpm, and the heating temperature is 80 ℃.
In this embodiment, preferably, in the sixth step, the temperature of the high-temperature melting is 260 ℃.
In this embodiment, preferably, the pressure of the pressure for blowing in the sixth step is 0.8MPa, and the thickness of the plastic film is 4 filaments.
Example 2
The preparation process of the polymer plastic film specifically comprises the following steps:
step one, preparing raw materials: taking 90 parts of polypropylene, 30 parts of polyethylene, 3 parts of antioxidant, 1.2 parts of coupling agent, 4 parts of surfactant, 11 parts of toughening agent, 9 parts of montmorillonite powder, 4 parts of lubricant and 14 parts of degradable material according to the mass parts;
step two, mixing raw materials: placing polypropylene, polyethylene, a coupling agent, an antioxidant and a toughening agent into a stirrer according to parts by weight for mixing, so that all materials are fully dispersed and mixed;
step three, crushing raw materials: putting the fully mixed raw materials in the step two into a crusher for crushing, and screening to obtain a bottom material after crushing;
step four, primary stirring and heating the raw materials: putting the bottom materials obtained in the third step and the surfactant in parts by weight into a stirrer for high-speed mixing and heating stirring;
step five, secondary stirring and heating of the raw materials: continuously adding the toughening agent and the montmorillonite powder in parts by weight into the step four, putting the mixture into the stirrer again for high-speed mixing, heating and stirring to obtain a premix;
step six, high-temperature melting: continuously stirring the premix and the degradable material according to the weight part in a stirrer for antipyresis until the premix and the degradable material are molten liquid;
step seven, blow molding: sending the molten liquid into a blow molding machine, adjusting the pressure and thickness of blow molding, obtaining a film through a blow molding machine, and cooling the film.
In this embodiment, the surfactant is preferably a synthetic polymer surfactant.
In this embodiment, the coupling agent is preferably a silane coupling agent.
In this embodiment, preferably, the toughening agent is maleic anhydride-SBS.
In this embodiment, the antioxidant is preferably dilauryl thiodipropionate antioxidant.
In this embodiment, preferably, the degradable material is formed by mixing polylactic acid, biodegradable PET, and polybutylene succinate/hexanoate, and a mass ratio of the polylactic acid to the biodegradable PET to the polybutylene succinate/hexanoate is 3: 2: 1.5.
in this embodiment, preferably, in the third step, the pulverizer pulverizes for 4 minutes, and filters the pulverized material through a 90-mesh sieve.
In this embodiment, preferably, in the fifth step, the rotation speed of the stirrer is 600 rpm, and the heating temperature is 90 ℃.
In this embodiment, preferably, in the sixth step, the temperature of high-temperature meltingIs composed of270 degrees celsius.
In this embodiment, preferably, the pressure of the pressure for blowing in the sixth step is 0.9MPa, and the thickness of the plastic film is 6 filaments.
Example 3
The preparation process of the polymer plastic film specifically comprises the following steps:
step one, preparing raw materials: 100 parts of polypropylene, 40 parts of polyethylene, 4 parts of antioxidant, 1.5 parts of coupling agent, 5 parts of surfactant, 12 parts of toughening agent, 10 parts of montmorillonite powder, 5 parts of lubricant and 15 parts of degradable material are taken according to the mass parts;
step two, mixing raw materials: placing polypropylene, polyethylene, a coupling agent, an antioxidant and a toughening agent into a stirrer according to parts by weight for mixing, so that all materials are fully dispersed and mixed;
step three, crushing raw materials: putting the fully mixed raw materials in the step two into a crusher for crushing, and screening to obtain a bottom material after crushing;
step four, primary stirring and heating the raw materials: putting the bottom materials obtained in the third step and the surfactant in parts by weight into a stirrer for high-speed mixing and heating stirring;
step five, secondary stirring and heating of the raw materials: continuously adding the toughening agent and the montmorillonite powder in parts by weight into the step four, putting the mixture into the stirrer again for high-speed mixing, heating and stirring to obtain a premix;
step six, high-temperature melting: continuously stirring the premix and the degradable material according to the weight part in a stirrer for antipyresis until the premix and the degradable material are molten liquid;
step seven, blow molding: sending the molten liquid into a blow molding machine, adjusting the pressure and thickness of blow molding, obtaining a film through a blow molding machine, and cooling the film.
In this embodiment, the surfactant is preferably a natural polymer surfactant.
In this embodiment, preferably, the coupling agent is a titanate coupling agent.
In this embodiment, preferably, the toughening agent is maleic anhydride-EPDM.
In this embodiment, the antioxidant is preferably a tris (nonylphenyl) phosphite antioxidant.
In this embodiment, preferably, the degradable material is formed by mixing polylactic acid, biodegradable PET, and polybutylene succinate/hexanoate, and a mass ratio of the polylactic acid to the biodegradable PET to the polybutylene succinate/hexanoate is 2.5: 2.5: 1.5.
in this embodiment, preferably, in the third step, the pulverizer pulverizes for 5 minutes, and filters the pulverized material through a 110-mesh sieve.
In this embodiment, preferably, in the fifth step, the rotation number of the stirrer is 700 rpm, and the heating temperature is 100 ℃.
In this embodiment, preferably, in the sixth step, the temperature of the high-temperature melting is 280 ℃.
In this embodiment, preferably, the pressure of the pressure for blowing in the sixth step is 1.0MPa, and the thickness of the plastic film is 8 filaments.
The films were tested for their properties according to GB/T12026-1989 ((Heat-sealable biaxially stretched polypropylene film)), as shown in Table 1.
| 1. Detecting items | 2. Unit of | 3. Example 1 | 4. Example 2 | 5. Example 3 |
| 6. Tensile strength | 7. MPa | 8. 180 | 9. 185 | 10. 184 |
| 11. Impact strength | 12. J/cm | 13. 800 | 14. 836 | 15. 841 |
| 16. Tear strength | 17. N/mm | 18. 6 | 19. 7 | 20. 7 |
As can be seen from Table 1, the preparation process of the polymer plastic film disclosed in the embodiments 1-3 of the present invention has better tensile strength, impact strength and tear strength.
The working principle and the using process of the invention are as follows:
in the preparation process of the polymer plastic film, the coupling agent added in the processing process can reduce the viscosity of the melt, improve the dispersion degree of the filling agent to improve the processing performance, thereby the product obtains good surface quality and mechanical property, the added toughening agent improves the toughening effect, the thermal deformation temperature is not changed or slightly reduced, the impact resistance is obviously improved, and the added degradation material ensures that the film has the functions and characteristics of the traditional plastic and can also have the functions of the film and the plastic after the service life is reached through the action of microorganisms in soil and water or the action of ultraviolet rays in sunlight, is split and degraded in natural environment, finally enters the ecological environment again in a reduction form, reduces the environmental pollution, the raw materials are fully stirred through the second step, the fourth step and the fifth step, so that the uniformity of the raw materials of the polymer plastic film is improved, and the quality of the film is improved.
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 (10)
1. A preparation process of a high polymer plastic film is characterized by comprising the following steps: the preparation process of the polymer plastic film specifically comprises the following steps:
step one, preparing raw materials: weighing 80-100 parts of polypropylene, 20-40 parts of polyethylene, 2-4 parts of antioxidant, 1-1.5 parts of coupling agent, 3-5 parts of surfactant, 10-12 parts of toughening agent, 8-10 parts of montmorillonite powder, 2-5 parts of lubricant and 12-15 parts of degradable material according to the mass parts;
step two, mixing raw materials: placing polypropylene, polyethylene, a coupling agent, an antioxidant and a toughening agent into a stirrer according to parts by weight for mixing, so that all materials are fully dispersed and mixed;
step three, crushing raw materials: putting the fully mixed raw materials in the step two into a crusher for crushing, and screening to obtain a bottom material after crushing;
step four, primary stirring and heating the raw materials: putting the bottom materials obtained in the third step and the surfactant in parts by weight into a stirrer for high-speed mixing and heating stirring;
step five, secondary stirring and heating of the raw materials: continuously adding the toughening agent and the montmorillonite powder in parts by weight into the step four, putting the mixture into the stirrer again for high-speed mixing, heating and stirring to obtain a premix;
step six, high-temperature melting: continuously stirring the premix and the degradable material according to the weight part in a stirrer for antipyresis until the premix and the degradable material are molten liquid;
step seven, blow molding: sending the molten liquid into a blow molding machine, adjusting the pressure and thickness of blow molding, obtaining a film through a blow molding machine, and cooling the film.
2. The process for preparing a polymeric plastic film according to claim 1, wherein: the surfactant is one of natural polymer surfactant or synthetic polymer surfactant.
3. The process for preparing a polymeric plastic film according to claim 1, wherein: the coupling agent is one of chromium complex coupling, silane coupling agent and titanate coupling agent.
4. The process for preparing a polymeric plastic film according to claim 1, wherein: the toughening agent is one of maleic anhydride connected EVA, maleic anhydride connected SBS and maleic anhydride connected EPDM.
5. The process for preparing a polymeric plastic film according to claim 1, wherein: the antioxidant is one of 2-methyl-4-hydroxy-5-tert-butylphenyl antioxidant, dilauryl thiodipropionate antioxidant and tris (nonylphenyl) phosphite antioxidant.
6. The process for preparing a polymeric plastic film according to claim 1, wherein: the degradable material is formed by mixing polylactic acid, biodegradable PET and polybutylene succinate/hexanoate, wherein the mass ratio of the polylactic acid to the biodegradable PET to the polybutylene succinate/hexanoate is 2: 3: 1.
7. the process for preparing a polymeric plastic film according to claim 1, wherein: in the third step, the crushing time of the crusher is 3-5 minutes, and the crushed material is filtered through a sieve with 80-110 meshes.
8. The process for preparing a polymeric plastic film according to claim 1, wherein: the revolution of the stirrer in the step five is 500-700 rpm, and the heating temperature is 80-100 ℃.
9. The process for preparing a polymeric plastic film according to claim 1, wherein: in the sixth step, the temperature of the high-temperature melting is 260 ℃ to 280 ℃.
10. The process for preparing a polymeric plastic film according to claim 1, wherein: the pressure of the blow molding pressure in the sixth step is 0.8-1.0MPa, and the thickness of the plastic film is 4-8 filaments.
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| TWI775537B (en) * | 2021-07-21 | 2022-08-21 | 南亞塑膠工業股份有限公司 | Biodegradable wrap film |
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| CN103951877A (en) * | 2014-04-02 | 2014-07-30 | 合肥杰事杰新材料股份有限公司 | Injection moulding blow molding polypropylene material and preparation method thereof |
| CN106674695A (en) * | 2016-12-29 | 2017-05-17 | 福州永鑫塑料包装用品有限公司 | Novel high-polymer plastic film and preparation technique thereof |
| CN107118435A (en) * | 2017-05-15 | 2017-09-01 | 安徽国登管业科技有限公司 | Polypropylene blending modified material and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI775537B (en) * | 2021-07-21 | 2022-08-21 | 南亞塑膠工業股份有限公司 | Biodegradable wrap film |
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