CN109177401A - A kind of complete biodegradable inflation film, preparation method and its application - Google Patents
A kind of complete biodegradable inflation film, preparation method and its application Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
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- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/008—Wide strips, e.g. films, webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2009/00—Layered products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- 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
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
Abstract
The present invention provides a kind of complete biodegradable inflation film, preparation method and its application, film includes the internal layer successively contacted, middle layer and outer layer；Based on parts by weight, internal layer includes polylactic acid, poly terephthalic acid-adipic acid-butanediol ester, talcum powder, opening agent and carbon black；Middle layer and outer layer include polylactic acid, poly terephthalic acid-adipic acid-butanediol ester and titanium dioxide；It also respectively include monooctadecyl acid glycerine ester, tributyl 2-acetylcitrate, ethylene bis stearic acid amide and chain extender in three layers；Opening agent is erucyl amide or oleamide；Chain extender is Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer and/or phenylethylene-maleic anhydride-glycidyl methacrylate copolymer.Film has higher tension fracture elongation rate, anti-pendulum impact strength, tensile strength, Young's modulus and heat sealing strength, and keeps complete biodegradable characteristic.
Description
Technical field
The invention belongs to technical field of polymer materials more particularly to a kind of complete biodegradable inflation films, its preparation
Method and its application.
Background technique
Different from traditional petroleum-based plastics, poly terephthalic acid-adipic acid-butanediol ester (PBAT) is provided by petroleum base
Aliphatic aromatic copolyesters made of source is made of two kinds of comonomers, and one is rigid BT segment (terephthalic acid (TPA) fourths two
Alcohol ester) by terephthalic acid (TPA) and 1,4-butanediol monomer composition, one is BA sections flexible (tetramethylene adipates) by adipic acid
With 1,4- butanediol monomer composition.PBAT has the degradability and the preferable mechanical property of aromatic polyester of aliphatic polyester concurrently.
Polylactic acid (PLA) is that lactic acid obtained by being fermented as plant amylum is polymerized, this is a kind of renewable resource, and
With biodegradation character, have very important significance to protection environment.Under the situation that petroleum-based energy day is becoming tight, exploitation
Research PLA resin is particularly important.The performance of PLA itself is similar to general-purpose plastics polypropylene, as modulus is high, tensile strength is big
It is good with processability.But the brittleness of PLA is serious, impact strength is less than 5KJ/m2, serious to limit answering extensively for it
With.
Therefore, energetically carrying out study on the modification both at home and abroad for the serious disadvantage of the brittleness of PLA, be blended using multicomponent
The toughness that modified method improves PLA is current technical way, how to obtain existing high tenacity, and has and biological can drop
The PLA resin for solving performance is to prepare the requirement of the products such as degradable film for package.
PBAT have biodegradable, up to 700% or so tension fracture elongation rate and low elastic modulus, thus it
It is considered as a selection well of toughening PLA.Their blend is still biodegradable, and can theoretically be divided
It Ju You not the high intensity of PLA and the high ductibility and toughness of PBAT.However, PLA and being simply mixed for other components generally can not
Generate satisfactory performance because be between usual two component it is thermodynamically incompatible, this is because the molecule segment of component
Between unfavorable interaction cause that its is unmixing or Interface Adhesion is poor.In order to improve compatibility and the increase of blend polymer
Interface adhesiveness between matrix and dispersed phase usually improves compatibility using reactive compatibilization or addition expanding material, to obtain
Ideal performance.
World inventions patent WO2018/028513A1 disclosed in Xiong Kai et al. disclose a kind of biodegradable films and its
Preparation method, this method is by PBAT, PLA, talcum powder or calcium carbonate, epoxy analog copolymer, adds through twin-screw extrusion, then through blow molding
The biodegradable inflation film of vertically and horizontally tearing strength equilibrium is made in work.
Qin Wen it is raw et al. application No. is 201710167009.5 Chinese invention patents to disclose a kind of enhanced full life
Object degradable material and preparation method thereof, this method is by PBAT, PLA, carbon nanotube, silane or titanate coupling agent, through twin-screw
It squeezes out, then is processed through blow molding, be remarkably improved the tensile strength and elongation at break of film.
Meter Qing Hua et al. application No. is the Chinese invention patents of 201710572627.8 and 201710572630.X to disclose
A kind of ultrathin transparent full-biodegradable film blown film grade material and preparation method thereof, this method is by PBAT, PLA, activeness and quietness
Transparent agent, activeness and quietness transparent agent can choose inorganic hydrophobic nano-silica, or organically Acker Ma AX-8900
Or ADX-1200s resin compatilizer or Hangzhou love one or more of gram CE-AZ01 expanding material, then with epoxidized soybean oil or have
Machine silicone oil is processed through twin-screw extrusion, then through blow molding, obtains the ultra-thin super transparent full-biodegradable film of 5 micron thickness, can use
In packaging film, shopping bag, mulch.
Weraporn Pivsa-Art et al. periodical Energy Procedia (2011,9:581-588.) have studied by
PLA/PBSA weight ratio is fixed as 80/20, and being separately added into weight ratio later is 10%, 20%, 30%, 40% and 50%
PBAT, blending extrusion and Blown Film, when PBAT additional amount is 20%, PLA/PBSA/PBAT blend has studies have shown that
Maximum tensile strength and impact strength, scanning electron microscope, which is shown, has excellent compatibility between PLA/PBSA/PBAT blend.
Jeff Schneider et al. periodical Journal of Applied Polymer Science (2016, DOI:
10.1002/APP.43310.) report the modified PLA/PBAT film of epoxy lactide, the results showed that the film tool being modified
There is good physical and mechanical property.
Worasak Phetwarotai et al. is in periodical Journal of Thermal Analysis and
Calorimetry (2016,126:1797-1808.) reports PLA, PBAT, nucleating agent talcum powder (Talc) and expanding material hexichol
Dicyclohexylmethane diisocyanate (MDI) is blended and Blown Film, portion rate PLA/PBAT/Talc/MDI (phr/phr/phr/phr)
Respectively 100/0/0/0,90/10/0/0,90/10/1/0,90/10/1/1,90/10/1/3,90/10/1/5,90/10/1/7,
The result shows that talcum powder is the good nucleating agent of PLA, the addition of Talc and PBAT significantly increase the nucleation rate of PLA, still
The addition of expanding material MDI, and form the crystallization behavior that more long-chain compounds will hinder PLA.
Sutinee Girdthep et al. is in periodical European Polymer Journal (2016,82:244-259.)
When reporting addition silver-carrying nano kaolinite in PLA/PBAT film, the degradation time of film can be delayed.
Department roc et al. reports in periodical " plastics science and technology " (2015,43 (10): 68-72.) with dibenzoyl peroxide
It (BOP) is interfacial compatibilizer, PLA and PBAT blending extrusion and Blown Film, portion rate PLA/PBAT/ antioxidant 1010/BOP
It (phr/phr/phr/phr) is respectively 55/45/0.5/1,45/55/0.5/1,35/65/0.5/1, the results showed that, film has
Stronger tensile strength and tearing strength, when increasing to a certain extent to PBAT, film just has preferable elongation at break.
In the case where our times advocates major premise that is environmentally protective, improving the ecological environment, Biodegradable film has wide
Development space.Polylactic acid is modified, researchs and produces that performance is more preferable, the lower Biodegradable film of price is poly- cream from now on
The development trend of sour film applications.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of complete biodegradable inflation film, preparation method and its
Using film tension fracture elongation rate with higher and anti-pendulum impact strength.
The present invention provides a kind of complete biodegradable inflation films, including internal layer, middle layer and the outer layer successively contacted；
Based on parts by weight, the internal layer includes 10~25 parts of polylactic acid, poly terephthalic acid-adipic acid-butanediol ester
61.8~88.95 parts, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, 0.05~0.2 part of chain extender,
0.1~1 part of opening agent, 0.1~2 part of lubricant and 0.2~2 part of carbon black；
Middle layer includes 10~25 parts of polylactic acid, poly terephthalic acid -52.8~83.25 parts of adipic acid-butanediol ester, increase-volume
0.1~2 part of agent, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 6~12 parts of titanium dioxide；
Outer layer includes 15~30 parts of polylactic acid, poly terephthalic acid -53.8~82.65 parts of adipic acid-butanediol ester, increase-volume
0.1~2 part of agent, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 2~6 parts of titanium dioxide；
The expanding material is monooctadecyl acid glycerine ester；Plasticizer is tributyl 2-acetylcitrate；Lubricant is that ethylene is double
Stearic amide；Opening agent is erucyl amide or oleamide；Nucleating agent is talcum powder；Chain extender is Styrene And Chloroalkyl Acrylates-first
The copolymer and/or phenylethylene-maleic anhydride-glycidyl methacrylate copolymer of base Glycidyl Acrylate.
Preferably, the complete biodegradable inflation film with a thickness of 0.05~0.06mm.
Preferably, the polylactic acid is the polylactic acid of model REVODE110；
Poly terephthalic acid-adipic acid-the butanediol ester is poly terephthalic acid-adipic acid-fourth of model TH801T
Diol ester.
Preferably, the model ADR4368 and/or ADR4370 of the chain extender.
The present invention provides a kind of preparation methods of complete biodegradable inflation film described in above-mentioned technical proposal, including with
Lower step:
By 10~25 parts of polylactic acid, poly terephthalic acid -61.8~88.95 parts of adipic acid-butanediol ester, expanding material 0.1
~2 parts, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, 0.05~0.2 part of chain extender, 0.1~1 part of opening agent and carbon black 0.2
~2 parts of mixing, melting, extruding pelletization obtain inner layer resin；
By 10~25 parts of polylactic acid, poly terephthalic acid -52.8~83.25 parts of adipic acid-butanediol ester, expanding material 0.1
~2 parts, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 6~12 parts of titanium dioxide mixing, melt
Melt, extruding pelletization, obtains middle layer resin；
By 15~30 parts of polylactic acid, poly terephthalic acid -53.8~82.65 parts of adipic acid-butanediol ester, expanding material 0.1
~2 parts, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 2~6 parts of titanium dioxide mixing, melting,
Extruding pelletization obtains outermost resin；
By inner layer resin, middle layer resin and outermost resin co-extrusion, Blown Film, complete biodegradable inflation film is obtained.
Preferably, the temperature of the extruding pelletization an are as follows: area: 120~140 DEG C, 2nd area: 150~170 DEG C, 3rd area: 160
~180 DEG C, 4th area: 170~190 DEG C, 5th area: 170~190 DEG C, 6th area: 170~190 DEG C, 7th area: 170~190 DEG C, 8th area:
170~190 DEG C, 9th area: 170~190 DEG C, tenth area: 170~190 DEG C, head: 170~190 DEG C.
Preferably, when the Blown Film, the temperature of internal layer an are as follows: area: 155~160 DEG C, 2nd area: 165~170 DEG C, three
Area: 165~180 DEG C, 4th area: 165~180 DEG C, 5th area: 160~175 DEG C；
The set temperature in middle layer an are as follows: area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, four
Area: 165~180 DEG C, 5th area: 160~175 DEG C；
The set temperature of outer layer an are as follows: area: 155-160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area:
165~180 DEG C, 5th area: 160~175 DEG C.
The present invention provides a kind of complete biodegradable bag, the complete biodegradable film as described in above-mentioned technical proposal or on
The complete biodegradable film for stating the preparation of preparation method described in technical solution is made.
The present invention provides a kind of complete biodegradable inflation films, including internal layer, middle layer and the outer layer successively contacted；With
Parts by weight meter, the internal layer include 10~25 parts of polylactic acid, poly terephthalic acid-adipic acid-butanediol ester 61.8~88.95
Part, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, 0.05~0.2 part of chain extender, opening agent 0.1~
1 part, 0.1~2 part of lubricant and 0.2~2 part of carbon black；Middle layer includes 10~25 parts of polylactic acid, poly terephthalic acid-adipic acid-
52.8~83.25 parts of butanediol ester, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, chain extender 0.05
~0.2 part and 6~12 parts of titanium dioxide；Outer layer includes 15~30 parts of polylactic acid, poly terephthalic acid-adipic acid-butanediol ester
53.8~82.65 parts, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender
With 2~6 parts of titanium dioxide；The expanding material is monooctadecyl acid glycerine ester；Plasticizer is tributyl 2-acetylcitrate；Lubricant is
Ethylene bis stearic acid amide；Opening agent is erucyl amide or oleamide；Nucleating agent is talcum powder；Chain extender is styrene-the third
Olefin(e) acid-glycidyl methacrylate copolymer and/or the copolymerization of phenylethylene-maleic anhydride-glycidyl methacrylate
Object.The present invention uses poly terephthalic acid-toughener of the adipic acid-butanediol ester as polylactic acid, monooctadecyl acid glycerine ester
For expanding material, with Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer and/or phenylethylene-maleic anhydride-methyl
The copolymer of Glycidyl Acrylate is chain extender, adds auxiliary agent, and collaboration use can effectively improve complete biodegradable and blow
Mould the tension fracture elongation rate and anti-pendulum impact strength of film.The collaboration of chain extender and expanding material uses, and can be improved film
Melt strength while, ensure that the processable mobility of film, and under the synergistic effect of other auxiliary agents, improve titanium dioxide
Or dispersibility of the carbon black in PLA/PBAT blown film resin.Film tensile strength also with higher, Young's modulus and heat seal are strong
Degree, and keep complete biodegradable characteristic.The results showed that lateral tensile strength is 20.3~23.7MPa, it is longitudinal
Tensile strength is 27.4~33.6MPa；Lateral elongation at break is 310.9~560.7%, and longitudinal elongation at break is
169.8~284.1%；Lateral Young's modulus is 393.7~782.4MPa, longitudinal Young's modulus is 541.8~
1182.3MPa；Lateral angle tear strength is 65.6~113.7KN/m, longitudinal angle tear strength is 85.9~
121.4KN/m；Heat sealing strength is 21.3~26.1N/15mm；Anti- pendulum impact strength is 0.82~1.18J.
Specific embodiment
The present invention provides a kind of complete biodegradable inflation films, including internal layer, middle layer and the outer layer successively contacted；
Based on parts by weight, the internal layer includes 10~25 parts of polylactic acid, poly terephthalic acid-adipic acid-butanediol ester
61.8~88.95 parts, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, 0.05~0.2 part of chain extender,
0.1~1 part of opening agent, 0.1~2 part of lubricant and 0.2~2 part of carbon black；
Middle layer includes 10~25 parts of polylactic acid, poly terephthalic acid -52.8~83.25 parts of adipic acid-butanediol ester, increase-volume
0.1~2 part of agent, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 6~12 parts of titanium dioxide；
Outer layer includes 15~30 parts of polylactic acid, poly terephthalic acid -53.8~82.65 parts of adipic acid-butanediol ester, increase-volume
0.1~2 part of agent, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 2~6 parts of titanium dioxide；
The expanding material is monooctadecyl acid glycerine ester；Plasticizer is tributyl 2-acetylcitrate；Lubricant is that ethylene is double
Stearic amide；Opening agent is erucyl amide or oleamide；Nucleating agent is talcum powder；Chain extender is Styrene And Chloroalkyl Acrylates-first
The copolymer (ADR-4368) and/or phenylethylene-maleic anhydride-glycidyl methacrylate of base Glycidyl Acrylate are total to
Polymers (ADR-4370).
The present invention uses poly terephthalic acid-toughener of the adipic acid-butanediol ester as polylactic acid, monooctadecyl acid the third three
Alcohol ester is expanding material, with Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer and/or phenylethylene-maleic anhydride-
The copolymer of glycidyl methacrylate is chain extender, adds auxiliary agent, and collaboration use can effectively improve biology drop completely
Solve the tension fracture elongation rate and anti-pendulum impact strength of inflation film.The collaboration of chain extender and expanding material uses, and can be improved
While the melt strength of film, the processable mobility of film ensure that, and under the synergistic effect of other auxiliary agents, improve titanium
The dispersibility of white powder or carbon black in PLA/PBAT blown film resin.
In the present invention, the polylactic acid is preferably model REVODE110.Poly terephthalic acid-adipic acid-the fourth two
Alcohol ester is preferably poly terephthalic acid-adipic acid-butanediol ester of model TH801T.
In the present invention, the poly terephthalic acid-adipic acid-butanediol ester (PBAT) is adipic acid and terephthalic acid (TPA)
With the copolyesters of butanediol, the characteristic of polyadipate fourth diester (PBA) and polybutylene terephthalate (PBT) is had both, it is existing
Preferable ductility and elongation at break, also there is preferable heat resistance and impact property, additionally have excellent biodegrade
Property, it is that best one of degradable material is applied in very active and market in current biodegradable plastic research.But PBAT and poly-
The compatibility of lactic acid PLA is poor, lacks the entanglement between strand, and split-phase is easy in blown film process, and film is laterally drawn
Intensity deficiency is stretched, blown film film bubble is caused to crack.
In the present invention, the expanding material is monooctadecyl acid glycerine ester (GMS), is yellowish waxy solid or piece
Shape also contains a small amount of diester and three esters in addition to containing monoesters, tasteless, odorless, nontoxic；There is hydrophily in its chemical structure
Hydroxyl and lipophilic chain alkyl functional group, can be improved the compatibility of PLA and PBAT, play the work of expanding material and lubricant
With advantageously reducing the viscosity of PLA/PBAT blend, improve the processing fluidity of the co-mixing system, especially blown film is processed
There is melt strength and melt flow rate (MFR) control rationally from the mobility on die head of film blowing machine in distraction procedure melt in journey
The blown film range of work of effect.
In the present invention, the chain extender be Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer and/or
Phenylethylene-maleic anhydride-glycidyl methacrylate copolymer；Contain epoxy-functional in chain extender, can with PBAT,
The terminal hydroxy group and carboxyl of PLA reacts, and is integrated to the multi-functional of the end of different macromolecular glucos (carboxyl and hydroxyl in polyester)
Additive increases the average molar mass of polymer to extend polymer molecular chain, and also can be used as altogether
Reactive compatibilizer in mixed object, PLA and PBAT strand is linked together, and improves PLA and PBAT molecular entanglement, is improved
The melt strength and viscosity of PLA/PBAT blend improve the compatibility of PLA and PBAT.
The present invention uses chain extender and expanding material GMS collaboration, while improving co-mixing system melt strength, ensure that
The processable mobility of film, and titanium dioxide or carbon black are improved in PLA/PBAT blown film resin under the synergistic effect of other auxiliary agents
In dispersibility.
In the present invention, the plasticizer is tributyl 2-acetylcitrate (ATBC).Plasticizer can effectively improve polylactic acid
The tension fracture elongation rate of film and anti-pendulum impact strength, maintain the flexibility of film, solve courier bag film brittleness
Defect.
In the present invention, the lubricant is ethylene bis stearic acid amide, is conducive to polydactyl acid blown film proper tree
The extrusion of rouge and the blow molding processing of inflation film, improve the surface smoothness of film.
In the present invention, the opening agent is erucyl amide (EA) or oleamide；The opening agent can be improved film and open
Mouth property, the mutual bonding for the double-layer films for avoiding inflation film caused in roll-in wrapup procedure.
The nucleating agent is talcum powder.The talcum powder be it is a kind of environmental protection, have excellent performance, cheap auxiliary agent；It is moulding
Talcum powder is added in material film, the efficient nucleation agent of polylactic acid is can be used as, reduces the size of the crystal grain of polylactic acid, is improved
Grain density, improves thin film strength and heat resistance, significantly improves waterproof performance and anti-aging property also.
In the present invention, the carbon black is used to improve the light blocking performance of courier bag film, avoids visible light transmissive, protects mail
Safety.The white of film can be improved in the titanium dioxide, while covering courier bag black inner, is conducive to improve courier bag
Aesthetic appearance.
In the present invention, the thickness of the complete biodegradable inflation film is preferably 0.05~0.06mm.
It is that the complete biodegradable that canescence internal layer is black is thin that the complete biodegradable inflation film, which is a kind of outer layer,
Film.Each component used in the film is completely biologically degraded, and the film application field is extensive, and alternative PE is made various
Environmentally friendly express packaging bag, wide market.The industrialization of biodegradation material and courier bag is conducive to the energy and material resources
The needs of long term growth solve white pollution, push the development of Novel environment-friendlymaterial material industry, anticipate with great economy and society
Justice.
The present invention provides a kind of preparation methods of complete biodegradable inflation film described in above-mentioned technical proposal, including with
Lower step:
By 10~25 parts of polylactic acid, poly terephthalic acid -61.8~88.95 parts of adipic acid-butanediol ester, expanding material 0.1
~2 parts, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, 0.05~0.2 part of chain extender, 0.1~1 part of opening agent and carbon black 0.2
~2 parts of mixing, melting, extruding pelletization obtain inner layer resin；
By 10~25 parts of polylactic acid, poly terephthalic acid -52.8~83.25 parts of adipic acid-butanediol ester, expanding material 0.1
~2 parts, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 6~12 parts of titanium dioxide mixing, melt
Melt, extruding pelletization, obtains middle layer resin；
By 15~30 parts of polylactic acid, poly terephthalic acid -53.8~82.65 parts of adipic acid-butanediol ester, expanding material 0.1
~2 parts, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 2~6 parts of titanium dioxide mixing, melting,
Extruding pelletization obtains outermost resin；
By inner layer resin, middle layer resin and outermost resin co-extrusion, Blown Film, complete biodegradable inflation film is obtained.
In the present invention, the inner layer resin, middle layer resin and outermost resin pass through double screw extruder extruding pelletization；It squeezes
When being granulated out, the set temperature of double screw extruder an are as follows: area: 120~140 DEG C, 2nd area: 150~170 DEG C, 3rd area: 160~
180 DEG C, 4th area: 170~190 DEG C, 5th area: 170~190 DEG C, 6th area: 170~190 DEG C, 7th area: 170~190 DEG C, 8th area:
170~190 DEG C, 9th area: 170~190 DEG C, tenth area: 170~190 DEG C, head: 170~190 DEG C, screw speed: 200~
400rpm。
Blown Film uses film-forming machine.When Blown Film, the set temperature of inflation film manufacturing machine are as follows:
Internal layer: an area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165~180 DEG C,
5th area: 160~175 DEG C；
Middle layer: an area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165~180 DEG C,
5th area: 160~175 DEG C；
Outer layer: an area: 155-160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165~180 DEG C,
5th area: 160~175 DEG C；
Mould body: 160~175 DEG C；Die orifice: 160~175 DEG C；
Internal layer screw speed: 50~300rpm, middle layer screw speed: 50~300rpm, outer layer screw speed: 50~
300rpm, 10~20m/min of hauling speed, blow-up ratio 2~6.
The present invention uses three-layer co-extruded technology, the composition ratio of each layer PLA and PBAT of reasonably optimizing, so that inside and outside three layers
The composition ratio of PLA and PBAT avoids lamination occur between each layer in range relatively；A variety of auxiliary agents are cooperateed with and are made
With, while guaranteeing when blown film processing blown film temperature and melt strength consistency during each layer coextrusion film blowing, and advantageously ensure that
The mechanical property of film.
The present invention provides a kind of complete biodegradable bag, the complete biodegradable film as described in above-mentioned technical proposal or on
The complete biodegradable film for stating the preparation of preparation method described in technical solution is made.
In the present invention, the preparation method of the complete biodegradable bag preferably includes following steps:
By complete biodegradable film printing, winding, the film after being printed；
It is synchronous that release film is covered into glue surface by gluing during the packaging film feeding after the printing, then heat seal is cut, and is obtained
To complete biodegradable bag.
In the present invention, through being glued mouth gluing during the packaging film feeding after the printing, sealing compound is coated in film
Edge, while being synchronized in the glue surface of coating sealing compound and release film is covered into glue surface.The temperature of the heat seal is preferably 300
~400 DEG C；The speed cut is preferably 100~150/min.
In order to further illustrate the present invention, thin to a kind of complete biodegradable provided by the invention below with reference to embodiment
Film, preparation method and its application are described in detail, but they cannot be interpreted as limiting the scope of the present invention.
PLA in following embodiment is bought by Zhejiang Hisun Biomaterials Co., Ltd, model
REVODE110；PBAT is bought by Xinjiang Lanshan Tunhe Polyester Co., Ltd, model TH801T；Chain extender selects BASF AG
Purchase, model ADR-4370 or ADR-4368.Film stretchability can be the mark of GB/T 1010.3-2006 in following embodiment
What standard was tested；Tearing toughness is tested according to the standard of QB/T 1130-91；Heat sealing strength is according to ASTM
The standard of F88-05 is tested.
Embodiment 1
The present invention provides a kind of complete biodegradable film, constituent and the mass fraction proportion of formula are as follows:
Inner layer resin: PLA20 parts；71.25 parts of PBAT；0.6 part of carbon black；2 parts of expanding material GMS；2 parts of plasticizer A TBC；
1 part of Lubricate EBS；EA1 parts of opening agent；0.15 part of 4370 type ADR of chain extender；2 parts of nucleating agent talcum powder.
PLA, PBAT, carbon black, GMS, ATBC, EA, EBS, ADR and talcum powder are weighed by the above formula, each component is carried out
Mechanical blending 5 minutes, mixed raw material is added twin-screw extrude, the condition of extruding pelletization are as follows: double screw extruder
Set temperature are as follows: an area: 120~140 DEG C, 2nd area: 150~170 DEG C, 3rd area: 160~180 DEG C, 4th area: 170~190 DEG C,
5th area: 170~190 DEG C, 6th area: 170~190 DEG C, 7th area: 170~190 DEG C, 8th area: 170~190 DEG C, head: 170~190
DEG C, screw speed: 100~300rpm.
Middle layer resin: PLA20 parts；64.95 parts of PBAT；10 parts of titanium dioxide；1 part of expanding material GMS；Plasticizer A TBC 3
Part；1 part of Lubricate EBS；0.05 part of 4370 type ADR of chain extender；
PLA, PBAT, titanium dioxide, GMS, ATBC, EBS and ADR are weighed by the above formula, each component is subjected to mechanical blending 5
Minute, mixed raw material is added twin-screw extrude, the condition of extruding pelletization are as follows: the set temperature of double screw extruder
Are as follows: an area: 120~140 DEG C, 2nd area: 150~170 DEG C, 3rd area: 160~180 DEG C, 4th area: 170~190 DEG C, 5th area: 170~
190 DEG C, 6th area: 170~190 DEG C, 7th area: 170~190 DEG C, 8th area: 170~190 DEG C, head: 170~190 DEG C, screw rod turns
Speed: 100~300rpm.
Outermost resin: PLA25 parts；66.8 parts of PBAT；4 parts of titanium dioxide；1 part of expanding material GMS；2 parts of plasticizer A TBC；
1 part of Lubricate EBS；0.2 part of 4370 type ADR of chain extender；
PLA, PBAT, titanium dioxide, GMS, ATBC, EBS and ADR are weighed by the above formula, each component is subjected to mechanical blending 5
Minute, mixed raw material is added twin-screw extrude, the condition of extruding pelletization are as follows: the set temperature of double screw extruder
Are as follows: an area: 120~140 DEG C, 2nd area: 150~170 DEG C, 3rd area: 160~180 DEG C, 4th area: 170~190 DEG C, 5th area: 170~
190 DEG C, 6th area: 170~190 DEG C, 7th area: 170~190 DEG C, 8th area: 170~190 DEG C, head: 170~190 DEG C, screw rod turns
Speed: 100~300rpm.
By obtained internal layer, middle layer, the resin dedicated air blast baking in constant temperature oven at 80 DEG C respectively of outer three layers of blown film
Dry 5 hours, be added separately to later three-layer co-extruded inflation film manufacturing machine it is interior, in, in outer hopper.
The set temperature of inflation film manufacturing machine are as follows:
Internal layer: an area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165~180 DEG C,
5th area: 160~175 DEG C；
Middle layer: an area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165~180 DEG C,
5th area: 160~175 DEG C；
Outer layer: an area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165~180 DEG C,
5th area: 160~175 DEG C；
Mould body: 160~175 DEG C；Die orifice: 160~175 DEG C.
Internal layer screw speed: 50~300rpm, middle layer screw speed: 50~300rpm, outer layer screw speed: 50~
300rpm, 10~20m/min of hauling speed, blow-up ratio are 2~6.
Plastics thickness control is listed in table 1 in 0.05~0.06mm, the mechanical property of testing film, test result.
The performance test results of the complete biodegradable film of 1 embodiment of the present invention 1~5 of table preparation
As can be seen from Table 1: using courier bag film provided by the invention, as the content of PBAT increases, can be improved altogether
The tension fracture elongation rate and anti-pendulum impact strength of mixed object, but its tensile strength, Young's modulus and tearing strength are in certain journey
It is reduced on degree.
Embodiment 2:
The present invention provides a kind of complete biodegradable film, constituent and the mass fraction proportion of formula are as follows:
Inner layer resin: PLA10 parts；81.9 parts of PBAT；0.6 part of carbon black；1 part of expanding material GMS；2 parts of plasticizer A TBC；
1 part of Lubricate EBS；EA1 parts of opening agent；0.1 part of 4368 type ADR of chain extender；2.4 parts of nucleating agent talcum powder.
Middle layer resin: PLA10 parts；74.9 parts of PBAT；10 parts of titanium dioxide；1 part of expanding material GMS；3 parts of plasticizer A TBC；
1 part of Lubricate EBS；0.1 part of 4368 type ADR of chain extender.
Outermost resin: PLA15 parts；76.3 parts of PBAT；4 parts of titanium dioxide；0.5 part of expanding material GMS；Plasticizer A TBC 3
Part；1 part of Lubricate EBS；0.2 part of 4368 type ADR of chain extender.
The mixing and processing conditions of inside and outside each layer blown film resin are same as Example 1.
The set temperature of inflation film manufacturing machine is same as Example 1.
Plastics thickness control is listed in table 1 in 0.05~0.06mm, the mechanical property of testing film, test result.
Embodiment 3:
The present invention provides a kind of complete biodegradable film, constituent and the mass fraction proportion of formula are as follows:
Inner layer resin: 25 parts of PLA；66.85 parts of PBAT；0.6 part of carbon black；1 part of expanding material GMS；Plasticizer A TBC 2
Part；1 part of Lubricate EBS；1 part of opening agent EA；0.15 part of 4370 type ADR of chain extender；2.4 parts of nucleating agent talcum powder.
Middle layer resin: 25 parts of PLA；58.9 parts of PBAT；10 parts of titanium dioxide；1 part of expanding material GMS；Plasticizer A TBC 4
Part；1 part of Lubricate EBS；0.1 part of 4370 type ADR of chain extender；
Outermost resin: 30 parts of PLA；60.3 parts of PBAT；4 parts of titanium dioxide；0.5 part of expanding material GMS；Plasticizer A TBC 4
Part；1 part of Lubricate EBS；0.2 part of 4370 type ADR of chain extender.
Internal layer, the mixing in middle layer and each layer blown film resin of outer layer and processing conditions are same as Example 1.
The set temperature of inflation film manufacturing machine is same as Example 1.
Plastics thickness control is listed in table 1 in 0.05~0.06mm, the mechanical property of testing film, test result.
Embodiment 4:
The present invention provides a kind of complete biodegradable film, constituent and the mass fraction proportion of formula are as follows:
Inner layer resin: 15 parts of PLA；77.7 parts of PBAT；0.6 part of carbon black；0.5 part of expanding material GMS；Plasticizer A TBC 2
Part；1 part of Lubricate EBS；EA1 parts of opening agent；0.2 part of 4370 type ADR of chain extender；2 parts of nucleating agent talcum powder.
Middle layer resin: PLA20 parts；61.8 parts of PBAT；12 parts of titanium dioxide；1 part of expanding material GMS；4 parts of plasticizer A TBC；
1 part of Lubricate EBS；0.2 part of 4370 type ADR of chain extender；
Outermost resin: 20 parts of PLA；70.9 parts of PBAT；4 parts of titanium dioxide；1 part of expanding material GMS；3 parts of plasticizer A TBC；
1 part of Lubricate EBS；0.1 part of 4370 type ADR of chain extender.
Internal layer, the mixing in middle layer and each layer blown film resin of outer layer and processing conditions are same as Example 1.
The set temperature of inflation film manufacturing machine is same as Example 1.
Plastics thickness control is listed in table 1 in 0.05~0.06mm, the mechanical property of testing film, test result.
Embodiment 5:
The present invention provides a kind of complete biodegradable film, constituent and the mass fraction proportion of formula are as follows:
Inner layer resin: PLA15 parts；76.85 parts of PBAT；0.6 part of carbon black；1 part of expanding material GMS；3 parts of plasticizer A TBC；
1 part of Lubricate EBS；EA0.5 parts of opening agent；ADR0.05 parts of 4370 type of chain extender；2 parts of nucleating agent talcum powder.
Middle layer resin: PLA20 parts；65.3 parts of PBAT；10 parts of titanium dioxide；0.5 part of expanding material GMS；Plasticizer A TBC 3
Part；1 part of Lubricate EBS；0.2 part of 4370 type ADR of chain extender；
Outermost resin: PLA25 parts；66.9 parts of PBAT；4 parts of titanium dioxide；1 part of expanding material GMS；2 parts of plasticizer A TBC；
1 part of Lubricate EBS；0.1 part of 4370 type ADR of chain extender.
Internal layer, the mixing in middle layer and outer layer blown film resin and processing conditions are same as Example 1.
The set temperature of inflation film manufacturing machine is same as Example 1.
Plastics thickness control is listed in table 1 in 0.05~0.06mm, the mechanical property of testing film, test result.
Comparative example 1
The embodiment of the present invention 5 is compared, plasticizer selects polyethylene glycol to substitute tributyl 2-acetylcitrate, the composition of formula
Ingredient and mass fraction proportion are as follows:
Inner layer resin: PLA15 parts；76.85 parts of PBAT；0.6 part of carbon black；1 part of expanding material GMS；Plasticizer polyethylene glycol
3 parts of (1500 grams/mol of molecular weight)；1 part of Lubricate EBS；0.5 part of opening agent EA；0.05 part of 4370 type ADR of chain extender；At
2 parts of core agent talcum powder.
Middle layer resin: PLA20 parts；65.3 parts of PBAT；10 parts of titanium dioxide；0.5 part of expanding material GMS；The poly- second two of plasticizer
3 parts of alcohol (1500 grams/mol of molecular weight)；1 part of Lubricate EBS；0.2 part of 4370 type ADR of chain extender；
Outermost resin: PLA25 parts；66.9 parts of PBAT；4 parts of titanium dioxide；1 part of expanding material GMS；Plasticizer polyethylene glycol
2 parts of (1500 grams/mol of molecular weight)；1 part of Lubricate EBS；0.1 part of 4370 type ADR of chain extender.
Plastics thickness control is listed in table 2 in 0.05~0.06mm, the mechanical property of testing film, test result.
Comparative example 2
As the comparative example of embodiment 3, complete biodegradable film of the invention, formula removes chain extender, forms
Ingredient and mass fraction proportion are as follows:
Inner layer resin: PLA25 parts；67 parts of PBAT；0.6 part of carbon black；1 part of expanding material GMS；2 parts of plasticizer A TBC；Profit
1 part of lubrication prescription EBS；EA1 parts of opening agent；2.4 parts of nucleating agent talcum powder.
Middle layer resin: PLA25 parts；59 parts of PBAT；10 parts of titanium dioxide；1 part of expanding material GMS；4 parts of plasticizer A TBC；Profit
1 part of lubrication prescription EBS；
Outermost resin: 30 parts of PLA；60.5 parts of PBAT；4 parts of titanium dioxide；0.5 part of expanding material GMS；Plasticizer A TBC 4
Part；1 part of Lubricate EBS.
Internal layer, the mixing in middle layer and each layer blown film resin of outer layer and processing conditions are same as Example 1.
The set temperature of inflation film manufacturing machine is same as Example 1.
Plastics thickness control is listed in table 2 in 0.05~0.06mm, the mechanical property of testing film, test result.
The performance test results of the film of 2 comparative example 1~2 of table preparation
It is compared by comparative example 1 with the analysis result of embodiment 5, it can be found that only changing plasticizer by acetyl tributyl citrate
After tributyl is polyethylene glycol, the tensile strength of film bag product performance, elongation at break, angle tear strength, heat sealing strength,
Anti- pendulum impact strength all declines about 10% or so, illustrates tributyl 2-acetylcitrate compared with polyethylene glycol in co-mixing system of the present invention
In have more excellent plasticizing effect.
It is compared by comparative example 2 with the analysis result of embodiment 3, it can be found that after 4370 type ADR of chain extender is not added,
The tensile strength of film bag product performance, elongation at break, the anti-pendulum impact strength of angle tear strength all decline about 5%-10%
Left and right, heat sealing strength decline 20% or so illustrate that chain extender 4370 is imitated in co-mixing system of the present invention with more excellent chain extension
The comprehensive mechanical property of film bag can be improved in fruit.
As seen from the above embodiment, the present invention provides a kind of complete biodegradable inflation films, including what is successively contacted
Internal layer, middle layer and outer layer；Based on parts by weight, the internal layer includes 10~25 parts of polylactic acid, poly terephthalic acid-adipic acid-
61.8~88.95 parts of butanediol ester, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, chain extender 0.05
~0.2 part, 0.1~1 part of opening agent, 0.1~2 part of lubricant and 0.2~2 part of carbon black；Middle layer includes 10~25 parts of polylactic acid, gathers
Terephthalic acid (TPA) -52.8~83.25 parts of adipic acid-butanediol ester, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, lubricant
0.1~2 part, 0.05~0.2 part of chain extender and 6~12 parts of titanium dioxide；Outer layer includes 15~30 parts of polylactic acid, poly- terephthaldehyde
Acid -53.8~82.65 parts of adipic acid-butanediol ester, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~2 part of lubricant,
0.05~0.2 part and 2~6 parts of titanium dioxide of chain extender；The expanding material is monooctadecyl acid glycerine ester；Plasticizer is acetyl lemon
Sour tributyl；Lubricant is ethylene bis stearic acid amide；Opening agent is erucyl amide or oleamide；Nucleating agent is talcum powder；
Chain extender is Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer and/or phenylethylene-maleic anhydride-metering system
The copolymer of sour polyglycidyl.The present invention uses poly terephthalic acid-toughener of the adipic acid-butanediol ester as polylactic acid,
Monooctadecyl acid glycerine ester is expanding material, with Styrene And Chloroalkyl Acrylates-glycidyl methacrylate copolymer and/or benzene second
Alkene-maleic anhydride-methyl Glycidyl Acrylate copolymer is chain extender, adds auxiliary agent, and collaboration use can be mentioned effectively
The tension fracture elongation rate and anti-pendulum impact strength of high complete biodegradable inflation film.The collaboration of chain extender and expanding material makes
With while can be improved the melt strength of film, ensure that the processable mobility of film, and make in the collaboration of other auxiliary agents
Under, the dispersibility of titanium dioxide or carbon black in PLA/PBAT blown film resin is improved.Film tensile strength also with higher, poplar
Family name's modulus and heat sealing strength, and keep complete biodegradable characteristic.The results showed that lateral tensile strength be 20.3~
23.7MPa, longitudinal tensile strength are 27.4~33.6MPa；Lateral elongation at break is 310.9~560.7%, longitudinal
Elongation at break is 169.8~284.1%；Lateral Young's modulus is 393.7~782.4MPa, and longitudinal Young's modulus is
541.8~1182.3MPa；Lateral angle tear strength is 65.6~113.7KN/m, and longitudinal angle tear strength is 85.9
~121.4KN/m；Heat sealing strength is 21.3~26.1N/15mm；Anti- pendulum impact strength is 0.82~1.18J.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of complete biodegradable inflation film, including internal layer, middle layer and the outer layer successively contacted；
Based on parts by weight, the internal layer includes 10~25 parts of polylactic acid, poly terephthalic acid-adipic acid-butanediol ester 61.8
~88.95 parts, 0.1~2 part of expanding material, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, 0.05~0.2 part of chain extender, opening
0.1~1 part of agent, 0.1~2 part of lubricant and 0.2~2 part of carbon black；
Middle layer includes 10~25 parts of polylactic acid, poly terephthalic acid -52.8~83.25 parts of adipic acid-butanediol ester, expanding material
0.1~2 part, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 6~12 parts of titanium dioxide；
Outer layer includes 15~30 parts of polylactic acid, poly terephthalic acid -53.8~82.65 parts of adipic acid-butanediol ester, expanding material
0.1~2 part, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 2~6 parts of titanium dioxide；
The expanding material is monooctadecyl acid glycerine ester；Plasticizer is tributyl 2-acetylcitrate；Lubricant is that ethylene is double stearic
Sour amide；Opening agent is erucyl amide or oleamide；Nucleating agent is talcum powder；Chain extender is Styrene And Chloroalkyl Acrylates-methyl-prop
The copolymer and/or phenylethylene-maleic anhydride-glycidyl methacrylate copolymer of olefin(e) acid polyglycidyl.
2. complete biodegradable inflation film according to claim 1, which is characterized in that the complete biodegradable blow molding
Film with a thickness of 0.05~0.06mm.
3. complete biodegradable inflation film according to claim 1, which is characterized in that the polylactic acid is model
The polylactic acid of REVODE110；
Poly terephthalic acid-adipic acid-the butanediol ester is poly terephthalic acid-adipic acid-butanediol of model TH801T
Ester.
4. complete biodegradable inflation film according to claim 1, which is characterized in that the model of the chain extender
ADR4368 and/or ADR4370.
5. a kind of preparation method of any one of Claims 1 to 4 complete biodegradable inflation film, comprising the following steps:
By 10~25 parts of polylactic acid, poly terephthalic acid -61.8~88.95 parts of adipic acid-butanediol ester, expanding material 0.1~2
Part, 0.1~5 part of plasticizer, 0.1~3 part of nucleating agent, 0.05~0.2 part of chain extender, 0.1~1 part of opening agent and carbon black 0.2~2
Part mixing, melting, extruding pelletization obtain inner layer resin；
By 10~25 parts of polylactic acid, poly terephthalic acid -52.8~83.25 parts of adipic acid-butanediol ester, expanding material 0.1~2
Part, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 6~12 parts of titanium dioxide mixing, melt, squeeze
It is granulated out, obtains middle layer resin；
By 15~30 parts of polylactic acid, poly terephthalic acid -53.8~82.65 parts of adipic acid-butanediol ester, expanding material 0.1~2
Part, 0.1~5 part of plasticizer, 0.1~2 part of lubricant, 0.05~0.2 part of chain extender and 2~6 parts of titanium dioxide mixing, melt, squeeze
It is granulated out, obtains outermost resin；
By inner layer resin, middle layer resin and outermost resin co-extrusion, Blown Film, complete biodegradable inflation film is obtained.
6. preparation method according to claim 5, which is characterized in that the temperature of the extruding pelletization are as follows: an area: 120~
140 DEG C, 2nd area: 150~170 DEG C, 3rd area: 160~180 DEG C, 4th area: 170~190 DEG C, 5th area: 170~190 DEG C, 6th area:
170~190 DEG C, 7th area: 170~190 DEG C, 8th area: 170~190 DEG C, 9th area: 170~190 DEG C, tenth area: 170~190 DEG C, machine
Head: 170~190 DEG C.
7. preparation method according to claim 5, which is characterized in that when the Blown Film, the temperature of internal layer are as follows: one
Area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165~180 DEG C, 5th area: 160~175
℃；
The set temperature in middle layer an are as follows: area: 155~160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165
~180 DEG C, 5th area: 160~175 DEG C；
The set temperature of outer layer an are as follows: area: 155-160 DEG C, 2nd area: 165~170 DEG C, 3rd area: 165~180 DEG C, 4th area: 165
~180 DEG C, 5th area: 160~175 DEG C.
8. a kind of complete biodegradable bag, by any one of Claims 1 to 4 complete biodegradable film or claim 5
The complete biodegradable film of any one of~7 preparation method preparations is made.
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN113881110A (en) * | 2020-07-02 | 2022-01-04 | 北京工商大学 | Full-biodegradable composite film, preparation method and express delivery bag thereof |
| CN113956546A (en) * | 2021-11-08 | 2022-01-21 | 蚌埠天成包装科技股份有限公司 | Preparation method of starch-based fully-degradable blown film composition |
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| CN114311914A (en) * | 2021-12-13 | 2022-04-12 | 佛山碧嘉高新材料科技有限公司 | Biodegradable multilayer co-extrusion low-density heat-insulation sheet and preparation method and application thereof |
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| CN110172233A (en) * | 2019-05-31 | 2019-08-27 | 淄博中南医药包装材料股份有限公司 | 100% biodegradable toughening handbag and preparation method thereof |
| CN110330773A (en) * | 2019-07-19 | 2019-10-15 | 深圳利琒环保材料有限公司 | A kind of controllable full-biodegradable mulch and preparation method thereof |
| CN110654095A (en) * | 2019-09-27 | 2020-01-07 | 深圳万达杰环保新材料股份有限公司 | Biodegradable film and method for producing same |
| CN111055564A (en) * | 2019-11-16 | 2020-04-24 | 青岛东海包装产业有限公司 | Degradable heat sealing film for compounding and preparation method thereof |
| CN111471287A (en) * | 2020-04-29 | 2020-07-31 | 常州绿之源高分子材料有限公司 | Fully-degradable polylactic acid single-sided matte film and preparation method thereof |
| CN111471287B (en) * | 2020-04-29 | 2022-05-17 | 常州绿之源高分子材料有限公司 | Fully-degradable polylactic acid single-sided matte film and preparation method thereof |
| CN113881110B (en) * | 2020-07-02 | 2022-11-15 | 北京工商大学 | Full-biodegradable composite film, preparation method and express delivery bag thereof |
| CN113881110A (en) * | 2020-07-02 | 2022-01-04 | 北京工商大学 | Full-biodegradable composite film, preparation method and express delivery bag thereof |
| CN111978691A (en) * | 2020-09-11 | 2020-11-24 | 中国科学院长春应用化学研究所 | Biodegradable mulching film and preparation method thereof |
| CN112210196A (en) * | 2020-10-10 | 2021-01-12 | 莱涤新材料(宁波)有限公司 | Biodegradable polylactic acid product and preparation method thereof |
| CN112521735A (en) * | 2020-10-30 | 2021-03-19 | 中船重工鹏力（南京）塑造科技有限公司 | PLA heat-resistant straw and preparation method thereof |
| CN112522992A (en) * | 2020-12-04 | 2021-03-19 | 厦门艾美森新材料科技股份有限公司 | Degradable kraft paper buffer air cushion film with good waterproofness and preparation method thereof |
| CN112606511A (en) * | 2020-12-15 | 2021-04-06 | 厦门长塑实业有限公司 | High-barrier degradable biaxially oriented film and preparation method thereof |
| CN112606511B (en) * | 2020-12-15 | 2022-08-16 | 厦门长塑实业有限公司 | High-barrier degradable biaxially oriented film and preparation method thereof |
| CN112662147A (en) * | 2020-12-23 | 2021-04-16 | 青岛润兴塑料新材料有限公司 | High-performance ternary compound biodegradable film |
| CN112708247A (en) * | 2020-12-28 | 2021-04-27 | 生刚 | Resin modification for producing winding film by biodegradable material and preparation method thereof |
| CN112550930A (en) * | 2021-01-04 | 2021-03-26 | 安徽沪通环保包装科技有限公司 | Convenient square-bottom bag and manufacturing method thereof |
| CN113172975A (en) * | 2021-04-06 | 2021-07-27 | 温州银润包装有限公司 | Multilayer composite co-extrusion film and manufacturing process thereof |
| CN113214516A (en) * | 2021-05-06 | 2021-08-06 | 吉翔宝（太仓）离型材料科技发展有限公司 | Environment-friendly degradable release film |
| CN113956546A (en) * | 2021-11-08 | 2022-01-21 | 蚌埠天成包装科技股份有限公司 | Preparation method of starch-based fully-degradable blown film composition |
| CN114015210A (en) * | 2021-11-29 | 2022-02-08 | 江苏碧升生物新材料有限公司 | Biodegradable film blowing resin and preparation method of film |
| CN114311914A (en) * | 2021-12-13 | 2022-04-12 | 佛山碧嘉高新材料科技有限公司 | Biodegradable multilayer co-extrusion low-density heat-insulation sheet and preparation method and application thereof |
| CN115386206A (en) * | 2022-09-23 | 2022-11-25 | 中国科学院长春应用化学研究所 | Resin for blow molding, preparation method thereof and blown film |
| CN115386206B (en) * | 2022-09-23 | 2024-02-13 | 中国科学院长春应用化学研究所 | Resin for blow molding, preparation method thereof and blown film |
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