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WO2011079492A1 - Substance pour film multi-composant complètement biodégradable, et procédé d'élaboration correspondant - Google Patents

Substance pour film multi-composant complètement biodégradable, et procédé d'élaboration correspondant Download PDF

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Publication number
WO2011079492A1
WO2011079492A1 PCT/CN2010/001055 CN2010001055W WO2011079492A1 WO 2011079492 A1 WO2011079492 A1 WO 2011079492A1 CN 2010001055 W CN2010001055 W CN 2010001055W WO 2011079492 A1 WO2011079492 A1 WO 2011079492A1
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WIPO (PCT)
Prior art keywords
parts
film material
acid
pla
fully biodegradable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2010/001055
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English (en)
Chinese (zh)
Inventor
董丽松
吕渭川
韩常玉
冉祥海
边俊甲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun Institute of Applied Chemistry of CAS
Tianjin Greenbio Material Co Ltd
Original Assignee
Changchun Institute of Applied Chemistry of CAS
Tianjin Greenbio Material Co Ltd
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Publication of WO2011079492A1 publication Critical patent/WO2011079492A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/256—Sheets, plates, blanks or films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0059—Degradable
    • B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • 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
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/005—Stabilisers against oxidation, heat, light, ozone
    • 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
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0075—Antistatics
    • 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
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0083—Nucleating agents promoting the crystallisation of the polymer matrix
    • 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
    • C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
    • 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
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/52—Phosphorus bound to oxygen only
    • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
    • C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
    • 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

Definitions

  • Multi-component thin film material capable of complete biodegradation and preparation method thereof
  • the present invention is in the field of polymer modification and processing, and more particularly, the present invention discloses a fully biodegradable multicomponent film material and a process for its preparation. Background technique
  • PHA Polyhydroxydecanoate
  • biodegradable polymer materials such as polylactic acid and polyglycolic acid obtained by chemical synthesis, the diversified performance of PHA structural diversity makes it a distinct advantage in applications.
  • PHA poly-3-hydroxybutyrate
  • PHA a good combination of properties is its copolymer, such as 3-hydroxybutyric acid-3-hydroxyvaleric acid copolymer (PHBV), 3-hydroxybutyric acid-4-hydroxybutyric acid copolymer (P3, 4HB) . Since the copolymerization destroys the regularity of the molecular chain, the melting point of the polymer and the defects caused by crystallization are lowered, and the mechanical properties and processability of the copolymer are improved.
  • BIOPOL and ENMAT are PHBV special resins introduced by ICI and Ningbo Tianan, respectively.
  • SOGREEN is Tianjin Guoyun Company Introduced P3, 4HB special resin.
  • copolymers can improve their mechanical properties and processability by adjusting the content of comonomers. Therefore, they are beneficial to the wide application of PHA completely biodegradable polymer materials.
  • PHA completely biodegradable polymer materials.
  • materials such as medicine and tissue engineering materials, such as Chinese patent CN1556836A, CN1501992A and It is described in CN1784467A.
  • Polylactic acid is another fully biodegradable polymer material obtained by fermenting lactic acid as a monomer from plant polysaccharides, and lactic acid is subjected to polycondensation or ring-opening polymerization of lactide to obtain PLA. It can be seen that PLA and PHA are different from other general polymer materials in that they utilize renewable plant resources and have biodegradable properties. The development of PHA and PLA is one of the effective ways to alleviate the depleting oil resources and protect the ecological environment.
  • PLA is the largest biodegradable polymer material currently produced at the largest scale, and has a high cost performance compared to other biodegradable polymer materials. NatureWorks USA has an annual production capacity of 140,000 tons of PLA. In China, Zhejiang Hisun Biomaterials Co., Ltd. has built a demonstration production line with an annual output of 5,000 tons of PLA, and is able to provide PLA products at home and abroad.
  • the multi-component composition such as PHA or PLA is blended and modified to form a biodegradable polymer material, which can obviously improve the thermoplastic processing performance of the single component, and can be prepared into a film material by using the existing polymer processing equipment. Used in packaging, catering, agriculture and other fields, it has a very broad application prospect.
  • Patent 7,208,535, PHA compositions and methods for their use in the production of PHA films
  • the patent discloses The composition and technique of the blown film formation of PHBV
  • U.S. Patent 5,763,513, L-lactic acid polymer composition, molded product and film,
  • a two-way stretch film forming technique for PLA is disclosed
  • US Patent No. 6,808,795 “Polyhydroxyalkanoate copolymer and poly lactic acid polymer compositions for laminates and films”
  • the patent discloses PHA And PLA multilayer composite thin Membrane.
  • the object of the present invention is to provide a novel fully biodegradable multicomponent film material and a process for the preparation thereof, in view of the deficiencies of the prior art.
  • the multi-component composite modification technology can significantly improve the melt viscosity and strength of the system to meet the needs of the blow molding process. At the same time, it can effectively improve the mechanical properties, dimensional stability and other properties of the film product.
  • the combination of such multi-component composite modification technology and blow molding processing technology can effectively reduce the cost of the obtained film, which will facilitate the packaging of film materials, catering and There are a wide range of applications in agriculture and other fields. Description of the invention
  • the present invention provides a novel fully biodegradable multicomponent film material and a preparation method thereof.
  • the multi-component composite modification technology can reduce the processing temperature and significantly improve the melt viscosity and strength of the system, thereby meeting the processing needs of the blown film formation process. At the same time, it can effectively improve the mechanical properties, dimensional stability and other properties of the film product.
  • the combination of such multi-component composite modification technology and blow molding technology can effectively reduce the cost of the resulting film, and will facilitate the wide application of film materials in packaging, catering and agriculture.
  • the fully biodegradable multicomponent film material disclosed herein comprises polylactic acid
  • PLA its number average molecular weight 30,000-200,000, hereinafter abbreviated as "PLA”
  • PLA 3-hydroxybutyric acid-4-hydroxybutyric acid copolymer
  • P3, 4HB the copolymer P3, 4HB 4-hydroxybutyric acid ( The content of 4HB) is 5-40 mol%, hereinafter referred to as "P3, 4HB”
  • plasticizer wherein the mass ratio of PLA, P3, 4HB, and plasticizer is 100: 5-40: 2-15 .
  • the copolymer P3, 4HB is absent, or although P3, 4HB is contained but the content of 4-hydroxybutyric acid 4HB is less than 5 mol%, the obtained film has poor toughness and tear resistance, and the obtained film is poor. The flatness is also poor. However, if the content of 4-hydroxybutyric acid 4HB in the copolymer P3, 4HB exceeds 40 mol%, the copolymer does not exist in the form of pellets or powder, but exists in the form of a bulk material, which causes blow molding. Processing cannot be implemented smoothly.
  • a plasticizer allows the PLA and the copolymer P3, 4HB to be blown into a film, but if the amount of the plasticizer exceeds 15 parts by mass (relative to 100 parts by mass of PLA), it may occur upon twin-screw granulation. The granule phenomenon and the openness of the obtained film are lowered, failing to meet the quality requirements.
  • the above fully biodegradable multicomponent film material preferably further contains a heat resistant stabilizer.
  • the heat resistant stabilizer is used in an amount of 0.1 to 2 parts by mass based on 100 parts by mass of the PLA. Heat resistant stabilizers, high material processing temperatures. If the amount of the heat-resistant stabilizer added is less than 0.1 part by mass, the effect of increasing the processing temperature of the material cannot be effectively achieved, but if the amount of the heat-resistant stabilizer exceeds 2 parts by mass (relative to 100 parts by mass of PLA), the result The film may have more gel points and cannot meet the quality requirements.
  • the above fully biodegradable multicomponent film material preferably further contains a lubricant.
  • the lubricant is used in an amount of 0.1 to 2 parts by mass based on 100 parts by mass of the PLA.
  • the lubricant can improve the processing fluidity. If there is no lubricant, the material viscosity is higher under the same processed cake, so the phase increase is required: 03 ⁇ 43 ⁇ 4, which will increase the energy.
  • PLA and P3, 4HB are not highly crystalline, and in the preparation of the fully biodegradable multicomponent film material of the present invention, it is preferred to further add a nucleating agent to the material.
  • the nucleating agent is used in an amount of 0.1 to 2 parts by mass based on 100 parts by mass of the PLA.
  • the addition of a nucleating agent helps the material to crystallize rapidly after being blow molded, so that the molten material is rapidly converted into a solid state to prevent the film from sticking.
  • the amount of the nucleating agent exceeds 2 parts by mass (relative to 100 parts by mass of PLA), the resulting film may lose transparency and the performance at the hem may be deteriorated, failing to meet the quality requirements.
  • plasticizers are: dioctyl phthalate, diethyl phthalate, diisooctyl phthalate, tributyl citrate, acetyl citrate tris(2-ethylhexyl) Ester), butyl hexanoyl citrate, di(2-ethylhexyl) adipate, polyethylene glycol, polypropylene glycol oxalate, epoxidized soybean oil, etc., one or two, If you choose two, you should keep the total number of copies unchanged;
  • the above heat-resistant stabilizer is: montmorillonite, silica, kaolin, zinc oxide, magnesium oxide, calcium stearate, succinic anhydride, cis-diol dianhydride, and one or more of butylene oxide. If two or more are selected, the total number of copies should be kept unchanged;
  • the above antioxidant is one of triphenyl phosphite, ethyl phosphite or bisphenol A phosphite; the above lubricant is stearic acid amide, oleic acid amide, erucic acid amide, zinc stearate, ethylene double One of stearyl amide (a sulfhydryl difatty amide);
  • the nucleating agent is one of dibenzylidene sorbitol, terephthalic acid, aluminum hydroxide, aluminum oxide, talc, and boron nitride;
  • the above antistatic agent is one of a fatty amine (e.g., laurylamine), decyl sulfonate, glycerol monolaurate, and glycerol dilaurate.
  • a fatty amine e.g., laurylamine
  • decyl sulfonate e.g., decyl sulfonate
  • glycerol monolaurate e.g., g., g., g., laurylamine
  • glycerol dilaurate e.g., glycerol dilaurate
  • the invention also discloses a method for preparing the above fully biodegradable multi-component film material, in particular, the above components are stirred in a high-speed mixer for 3-10 minutes, then subjected to twin-screw extrusion granulation, and then single The screw extrusion blown film unit blows into a film, and the thickness of the film product can be controlled at 15-100 ⁇ m.
  • the twin screw extrusion system temperature is set to:
  • the single screw extrusion blow filming temperature is set to:
  • Main engine speed 50-110 rpm.
  • a stable bubble can be formed to achieve blown film formation, and the obtained film material has the following mechanical properties: longitudinal tensile strength 30-50 MPa, transverse tensile strength 25-40 MPa, longitudinal elongation at break 50-300%, transverse elongation at break 40-250%, right angle tear strength 80-130MPa.
  • the TE-35 twin-screw extruder of Nanjing Keya Plastic Equipment Co., Ltd. was selected, with a length to diameter ratio of 48.
  • the Dalian JJ Huayang Plastic Machinery Co., Ltd. SJM-Z30X30 blown film unit was selected, with a length to diameter ratio of 30.
  • PLA 100 parts (number average molecular weight is 30,000), P3, 4HB 5 parts (4HB content 5 mol%), 2 parts of diethyl phthalate, 0.1 part of silicon, 0.1 part of triphenyl phosphite, 0.1 part of stearamide, 0.1 part of dibenzylidene sorbitol, laurel 0.1 part of the amine, the above components were stirred in a high-speed mixer for 3 minutes, and after twin-screw granulation, the film was blown by single-screw extrusion to obtain a film product of ⁇ .
  • the twin screw extrusion system temperature is set to:
  • the single screw extrusion blow filming temperature is set to:
  • Main engine speed 50 rpm.
  • PLA 100 parts (number average molecular weight is 200,000), P3, 4HB 40 parts (4HB content 40 mol%), 15 parts of dioctyl phthalate, 2 parts of montmorillonite, 2 parts of oleic acid amide, 2 parts of terephthalic acid, 2 parts of decyl sulfonate, After the above components were stirred in a high-speed mixer for 10 minutes, the film was subjected to twin-screw granulation, and the film was blown by single-screw extrusion to obtain a film of 15 ⁇ m.
  • the twin screw extrusion system temperature is set to:
  • the single screw extrusion blow filming temperature is set to:
  • Main engine speed 110 rpm.
  • the mechanical properties of the obtained film material are as follows: longitudinal tensile strength 50 MPa, transverse tensile strength 40 MPa, longitudinal elongation at break 300%, transverse elongation at break 250%, right angle tear strength 130 MPa o
  • Example 3 Weigh the components in the following parts by mass: PLA 100 parts (number average molecular weight 100,000), P3, 4HB 10 parts (4HB content 10 mol%), diisooctyl phthalate 10 parts, kaolin 1 part 1 part of ethyl phosphite, 1 part of erucic acid amide, 2 parts of aluminum hydroxide, 0.5 parts of glycerol monolaurate, the above components were stirred in a high-speed mixer for 5 minutes, after twin-screw granulation, A single screw extrusion blown film can obtain a film of 60 ⁇ m.
  • the temperature range of the twin-screw extrusion system is:
  • the single screw extrusion blown film temperature range is:
  • Main engine speed 80 rpm.
  • the mechanical properties of the obtained film material are as follows: longitudinal tensile strength 45 MPa,
  • a single-screw extrusion blown film can obtain a film of 40 ⁇ m.
  • the temperature range of the twin-screw extrusion system is:
  • the single screw extrusion blown film temperature range is:
  • Main engine speed 80 rpm.
  • the mechanical properties of the obtained film materials are as follows: longitudinal tensile strength 38 MPa, transverse tensile strength 30 MPa, longitudinal elongation at break 190%, transverse elongation at break 150%, right angle tear strength 130 MPa o
  • PLA 100 parts (number average molecular weight 80,000), P3, 4HB 30 parts (4HB content 25 mol%), acetyl citrate tris(2-ethylhexyl ester) 10 parts , 0.5 parts of magnesium oxide, 1 part of ethyl pitylate, 0.2 parts of ethylene bisstearamide, 1 part of talc, 0.3 parts of glycerol dilaurate, and the above components are stirred in a high-speed mixer for 5 minutes. Thereafter, after twin-screw granulation, the film was blown by single-screw extrusion, and a film of 40 ⁇ m was obtained.
  • the mechanical properties of the obtained film material are as follows: longitudinal tensile strength 32 MPa, transverse tensile strength 28 MPa, longitudinal elongation at break 250%, transverse elongation at break 200%, right angle tear strength 120 MPa o
  • longitudinal tensile strength 32 MPa longitudinal tensile strength 32 MPa
  • transverse tensile strength 28 MPa longitudinal elongation at break 250%
  • transverse elongation at break 200% transverse elongation at break 200%
  • PLA 100 parts (number average molecular weight 80,000), P3, 4HB 15 parts (4HB content 7 mol%), di(2-ethylhexyl) adipate 10 parts 0.5 parts of maleic acid tin, 1 part of ethyl phosphite, 0.2 parts of ethylene bisstearamide, 1 part of talc, 0.3 parts of glycerol dilaurate, and the above components are stirred in a high-speed mixer After 5 minutes, after twin-screw granulation, the film was blown by single-screw extrusion, and a film product of 40 ⁇ m was obtained.
  • the mechanical properties of the obtained film material were as follows: longitudinal tensile strength 35 MPa, transverse tensile strength 30 MPa, longitudinal elongation at break 130%, transverse elongation at break 100%, right angle tear strength HOMPao Example 7
  • PLA 100 parts (number average molecular weight 80,000), P3, 4HB 25 parts (4HB content 15 mol%), polyethylene glycol 5 parts, polypropylene glycol oxalate 5 Butene 0.5 parts of dibutyltin, 1 part of ethyl phosphite, 0.2 part of ethylene bisstearamide, 1 part of talc, 0.3 parts of glycerol dilaurate, and the above components were stirred in a high-speed mixer for 5 minutes. After twin-screw granulation, a single-screw extrusion blown film can obtain a film product of 50 ⁇ m.
  • the mechanical properties of the obtained film material were as follows: longitudinal tensile strength 38 MPa, transverse tensile strength 30 MPa, longitudinal elongation at break 240%, transverse elongation at break 160%, and right angle tear strength 128 MPa.
  • PLA 100 parts (number average molecular weight 80,000), P3, 4HB 25 parts (4HB content 15 mol%), polypropylene glycol oxalate 10 parts, epoxy soybean oil 5 Parts, 0.5 parts of butylene oxide, 1 part of bisphenol A phosphite, 0.2 part of ethylene bisstearamide, 1 part of boron nitride, 0.3 parts of dilaurate, 0.3 parts of the above components at high speed After stirring for 5 minutes in a mixer, after twin-screw granulation, the film was blown by single-screw extrusion to obtain a film product of 45 ⁇ m.
  • the mechanical properties of the obtained film materials are as follows: longitudinal tensile strength 36 MPa, transverse tensile strength
  • the twin screw extrusion system temperature is set to: One zone: 70 °C
  • the single screw extrusion blow filming temperature is set to:
  • Main engine speed 50 rpm.
  • the twin screw extrusion system temperature is set to:
  • the single screw extrusion blow filming temperature is set to:
  • Main engine speed 50 rpm.
  • the components were weighed according to the following parts: PLA 100 parts, number average molecular weight 80,000, P3, 4HB 15 parts, 4HB content 7 mol%, acetylated tributyl citrate 18 parts, maleic anhydride 0.5 Serving, 0.2 parts of ethyl phosphite, 0.2 parts of sulfhydryl di-fatty acid amide, 1 part of talc, 0.3 parts of glycerol dilaurate, and the above components were stirred in a high-speed mixer for 5 minutes, and then made by twin-screw. Granules, granules appear, single-screw extrusion blown film, film opening properties are reduced, failing to meet quality requirements. Comparative Example 3
  • PLA 100 parts, number average molecular weight 80,000, P3, 4HB 15 parts, 4HB content 7 mol%, di(2-ethylhexyl) adipate 10 parts, cis 0.5 parts of dibutyltin butene, 0.2 parts of ethyl phosphite, 0.2 parts of sulfhydryl di-fatty acid amide, 1 part of talc, 0.3 parts of glycerol dilaurate, and the above components were stirred in a high-speed mixer for 5 minutes. After twin-screw granulation, the single-screw extrusion blown film, the single-screw three-zone temperature settings are:

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Abstract

La présente invention concerne une substance pour film multi-composant complètement biodégradable, et un procédé d'élaboration correspondant. Cette substance pour film multi-composant complètement biodégradable comprend de l'acide polylactique (PLA), un copolymère d'acide 3-hydroxybutyrique et d'acide 4-hydroxybutyrique (P3, 4HB), un plastifiant, un stabilisant résistant à la chaleur, un antioxydant, un lubrifiant, un agent de nucléation, et un agent anti-électrostatique. Le rapport massique entre acide polylactique (PLA), copolymère d'acide 3-hydroxybutyrique et d'acide 4-hydroxybutyrique (P3, 4HB), plastifiant, stabilisant résistant à la chaleur, antioxydant, lubrifiant, agent de nucléation et agent anti-électrostatique est de 100: 5-40: 2-15: 0,1-2: 0,1-2: 0,1-2: 0,1-2: 0,1-2.
PCT/CN2010/001055 2009-12-28 2010-07-14 Substance pour film multi-composant complètement biodégradable, et procédé d'élaboration correspondant Ceased WO2011079492A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200910245118A CN101824210A (zh) 2009-12-28 2009-12-28 一种可完全生物分解的多组分薄膜材料及其制备方法
CN200910245118.X 2009-12-28

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Cited By (4)

* Cited by examiner, † Cited by third party
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CN102848569A (zh) * 2012-10-03 2013-01-02 广东华业包装材料有限公司 3-羟基丁酸-4-羟基丁酸共聚物双向拉伸薄膜的生产方法
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CN117820769A (zh) * 2024-01-05 2024-04-05 中化泉州石化有限公司 一种渔网线专用的海洋防污、长余辉发光聚丙烯及其制备方法
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