CN105729967B - A kind of compound barrier high-strength membrane of multilayer PLA - Google Patents
A kind of compound barrier high-strength membrane of multilayer PLA Download PDFInfo
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- CN105729967B CN105729967B CN201610145386.4A CN201610145386A CN105729967B CN 105729967 B CN105729967 B CN 105729967B CN 201610145386 A CN201610145386 A CN 201610145386A CN 105729967 B CN105729967 B CN 105729967B
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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
- 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
- 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
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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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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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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- 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
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The present invention relates to a kind of compound barrier high-strength membrane of multilayer PLA, obtain by MULTILAYER COMPOSITE, including the PLA hydrophobic membrane of outer layer, intermediate layer PLA barrier film layer, bottom PLA strengthen film.It is further characterized in that：PLA hydrophobic intensity film and intermediate layer PLA the barrier film layer of outer layer, PUR film layer is equipped between intermediate layer PLA barrier film layer and bottom PLA elastic membrane.The composite membrane has excellent intensity, barrier properties for gases and thermal insulation, and materials environmental protection, available for multi-field packaging.
Description
Technical field
The present invention relates to a kind of preparation method of film, more particularly to a kind of there is excellent in strength, the poly- breast of excellent barrier
The preparation method of sour environmental protection composite membrane.
Background technology
Although plastic material possesses more excellent performance and wide applicability, but it is from oil product and can not drop
Solution, in crisis of resource and environmental pollution serious today all the more, finds function admirable and reproducible alternative materials then turns into mesh
The most important thing of preceding Material Field research.
At present, film consumption is increasing, although and widely used plastic foil such as PE films, PP films, PET film etc. have well
Mechanical property, and prepare simple, but can not degrade, cause serious white pollution.
In degradation material, starch because its cheap price and extensive source further investigate and by modified and
It is compound to be prepared for a variety of lives and industrial goods, such as starch basement membrane, starch dishware.But starch has its natural defect, it
Poor mechanical property, performance is unstable, can only apply to the field low to mechanical property requirements.And the appearance of PLA changes this
One present situation.PLA（PLA）It is aliphatic polyester, with lactic acid（2 hydroxy propanoic acid）For basic structural unit.PLA can pass through fermentation
The natural materials such as corn are made, and can be also made using lactic acid polycondensation.PLA and its end product can naturally divide under composting conditionses
Solution turns into CO2And water, solid waste discharge amount is reduced, is a kind of biogenic material of environmental protection.Although PLA
With good biodegradability, machinability, excellent mechanical property, but its property is crisp frangible, lack flexibility with it is flexible
Property, largely limit the application of polylactic acid membrane.
For film needs, in addition to being had higher requirements to mechanical property, feature is also proposed in some special dimensions
Requirement, such as need waterproof, trapping, antibacterial, antirust in food and medicine packaging field, simple degradation material film is difficult reality
Existing functionalization.The excellent multifunctional membrane of processability is a kind of common in field of film preparation by the way of multi-layer co-extruded
Means, a kind of medical multilayer co-extrusion film manufacturing method, passes through interior sealing, core layer and heat-resistant layer as disclosed in CN104191584A
It is compound, provide good mechanics and heat resistance for film.CN103481616A discloses a kind of antistatic PP TYPE
And preparation method thereof, the composite membrane causes composite membrane to have using the organic collocation melting co-extrusion film forming of a variety of barrier anti-static materials
Excellent intensity and barrier antistatic behaviour.
By way of multilayer coordinates, with reference to different layers characteristic be superimposed, come realize including more preferable intensity, toughness or
Other features such as elasticity, barrier, anti-flammability are undoubtedly a kind of very simple and practical method.In the present invention, lead to
The collocation of excessive layer function polylactic acid membrane, to realize excellent film-strength and barrier.
The content of the invention
The invention aims to individual layer polylactic acid membrane intensity difference and the defect of barrier can not be realized there is provided one kind
The preparation method of composite membrane with excellent in strength and barrier.
The purpose of the present invention is achieved through the following technical solutions：
A kind of compound barrier high-strength membrane of multilayer PLA, is obtained by MULTILAYER COMPOSITE, includes the PLA hydrophobic membrane of outer layer
Layer, intermediate layer PLA barrier film layer, bottom PLA enhancing film layer.It is further characterized in that：The PLA hydrophobic film layer of outer layer
Film layer is obstructed with intermediate layer PLA, hot melt is equipped between intermediate layer PLA barrier film layer and bottom PLA enhancing film layer
Adhesive film.
Further, the PLA hydrophobic film layer be with PLA, PLA graft glycidyl methacrylate,
POSS modifiers, reinforcer are primary raw material, and adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming；Wherein,
In major ingredient, the mass fraction of PLA is between 40%-80%, the quality point of PLA graft glycidyl methacrylate
Number is between 8%-15%, and the mass fraction of POSS modifiers is between 2%-5%, and the mass fraction of reinforcer is between 8%-25%
Between, auxiliary agent antioxidant, waterproofing agent, the consumption of anti ultraviolet agent are all between the 2-4% of PLA quality.
Further, the POSS modifiers are eight arms（3- hydroxy-3-methyl Butyldimethyl siloxy groups）POSS, English
It is entitled:Octa (3-hydroxy-3-methylbutyldimethylsiloxy) POSS, POSS is a kind of with octahedra cage
The silica structure of shape structure, polyhedral oligomeric silsesquioxane（POSS）Having 8 on the corner of cage structure can be changed
The group R of property.R group is the methyl butyl dimethyl siloxane of 3- hydroxyls -3 in the present invention, and its molecular structural formula is as follows：
Further, described PLA graft glycidyl methacrylate is to access metering system on PLA surface
Acid glycidyl ester segment.Cut-in method can using melting access method, i.e., using PLA and GMA as
Raw material, using dibenzoyl peroxide as catalyst, adds double screw extruder, 210 DEG C of extrusion fusion-grafting copolymerization connect after blending
Branch degree is between 0.8%-2%, it is preferred that grafting degree is between 1.2%-1.8%.The material has good toughness after grafting
And the compatibility excellent with PLA, the toughness of PLA can be effectively improved, composite has excellent toughness and breach punching
Hitting property.
Further, the reinforcer is the one or more in vistanex, and typically, vistanex is polyethylene
Resin, linear low density polyethylene resin, polystyrene, ethylene-vinyl acetate copolymer etc..
Further, the PLA barrier film layer is with PLA, graphene graft, ethylene-vinyl alcohol copolymer tree
Fat is primary raw material, and adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming, wherein, in major ingredient, PLA
Mass fraction is between 40%-80%, and the mass fraction of ethylene-vinyl alcohol copolymer resin is between 20%-40%, graphene
The mass fraction of graft is between 2.5%-4%, and auxiliary agent antioxidant, waterproofing agent, the consumption of anti ultraviolet agent are all PLA matter
Between the 2-4% of amount.
The graphene graft is that graphene is grafted polyisoprene, and its typical preparation method is：Bei perylenes acid anhydride envelope processed
The polyisoprene at end, i.e., in the building-up process of polyisoprene by control n-BuLi rate of charge different from monomer from
And the polyisoprene of different molecular weight is prepared, Jia Ru perylene acid anhydride molecules enter to polyisoprene chain under the conditions of same anhydrous and oxygen-free
Row end-blocking；Thereafter, the polyisoprene chain that graphene Yu perylenes acid anhydride is blocked in solution environmental carries out the non-covalent knot of pi-pi bond accumulation
Close, so that the graphene grafting polyisoprene needed for preparing.Wherein, the grafting degree of polyisoprene（Calculated using mass ratio）
Between 0.5%-1.2%.The graphene graft can also be synthesized with other living polymerization modes.
A kind of multilayer PLA composite barrier film as claimed in claim 1, it is characterised in that：The PLA strengthens film
Layer is, using PLA, polycaprolactone, nanometer reinforcer, PLA grafted maleic anhydride as primary raw material, to add a small amount of auxiliary agent bag
Antioxidant, waterproofing agent, anti ultraviolet agent film forming are included, wherein, in major ingredient, the mass fraction of PLA gathers oneself between 30%-60%
The mass fraction of lactone is between 30%-60%, and the mass fraction of nanometer reinforcer is between 2.5%-4%, PLA grafting
The mass fraction of maleic anhydride is between 10-20%, and auxiliary agent antioxidant, waterproofing agent, the consumption of anti ultraviolet agent are all PLA matter
Between the 2-4% of amount.Wherein, the nanometer reinforcer can be times in nano imvite, nano titanium oxide, nano-cellulose
Meaning is a kind of.
Further, the PLA that each layer of heretofore described composite membrane is used is Pfansteihl, D-ALPHA-Hydroxypropionic acid or L, D- breast
Acid composition, the molecular weight most preferably 300000-500000g/mol of the PLA, is again 150000-300000g/mol, then
Secondary is 80000-150000g/mol.
Further, the PUR film layer is EVA hot-melt adhesive.
Further, PLA barrier film layer of the present invention, PLA hydrophobic film layer, PLA enhancing film layer are using single
It is adhesively fixed after only extrusion molding with PUR.
Further, the thickness of the PLA hydrophobic membrane is between 0.2-0.5mm, and the thickness of PLA barrier film layer is situated between
Between 0.3-0.6mm, the thickness of PLA elastic membrane between 0.2-0.5mm, the thickness of EVA hot-melt adhesive film layer between
Between 0.1-0.3mm.
The beneficial effect of the invention is, the compound of three strata lactic acid composite films solves asking for intensity and functionalization
Topic, the PLA hydrophobic film layer on upper strata biases toward the barrier of hydrophobic effect and steam, and POSS addition may be such that surface hydrophobic
Greatly improve, water contact angle reaches more than 110 °, and the PLA hydrophobic film layer in middle level is coordinated due to graphene sheet layer formation network
The barrier of ethylene-vinyl alcohol copolymer, makes the film have good barrier properties for gases, meanwhile, the presence of enhancing film is enhanced
This is combined film strength, and introduces hot melt adhesive layer on the one hand because EVA is less than the fusing point of each tunic of PLA, can be added using pressurization
The fixed each layer of temperature, is on the other hand also beneficial to compound film strength.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of embodiment 1.
Fig. 2 is the cross section structure schematic diagram of embodiment 2.
Embodiment
Illustrative embodiment of the invention described in detail below.But these implementations are only exemplary purpose, and
The invention is not restricted to this.
Embodiment 1
A kind of reference picture 1, the compound barrier high-strength membrane of multilayer PLA, is obtained by MULTILAYER COMPOSITE, includes the poly- breast of outer layer
Sour hydrophobic film layer 1, intermediate layer PLA barrier film layer 3, bottom PLA enhancing film layer 5.It is further characterized in that：The poly- breast of outer layer
EVA hot-melt adhesive film layer 2, intermediate layer PLA barrier film layer are equipped between sour hydrophobic film layer and intermediate layer PLA barrier film layer
EVA hot-melt adhesive film layer 4 is equipped between bottom PLA enhancing film layer.
The thickness of the PLA hydrophobic film layer 1 is 0.4mm, and the thickness of PLA barrier film layer 3 is 0.5mm, PLA
The thickness for strengthening film layer 5 is 0.35mm, and the thickness of EVA hot-melt adhesive film layer 2,4 is 0.2mm.
The PLA hydrophobic film layer 1 be with PLA, PLA graft glycidyl methacrylate,（3- hydroxyls-
3- methyl butyl dimethyl siloxanes）POSS, ethylene-vinyl acetate copolymer are primary raw material, and adding a small amount of auxiliary agent includes
Antioxidant, waterproofing agent, anti ultraviolet agent film forming；Wherein, in major ingredient, the mass fraction of PLA is 65%, PLA grafting methyl-prop
The mass fraction of olefin(e) acid ethylene oxidic ester is 12%,（3- hydroxy-3-methyl Butyldimethyl siloxy groups）POSS mass fraction
For 4%, the mass fraction of ethylene-vinyl acetate copolymer is 19%, and auxiliary agent antioxidant, waterproofing agent, the consumption of anti ultraviolet agent are all
The 3% of PLA quality.
The PLA barrier film layer 3 is with PLA, graphene grafting polyisoprene, ethylene-vinyl alcohol copolymer
Resin is primary raw material, and adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming, wherein, in major ingredient, PLA
Mass fraction be 60%, the mass fraction of ethylene-vinyl alcohol copolymer resin is the quality point of graphene graft between 37%
Number is 3%, and auxiliary agent antioxidant, waterproofing agent, anti ultraviolet agent, the consumption of film forming agent are all the 3% of PLA quality.
The PLA enhancing film layer 5 is with PLA, polycaprolactone, nano imvite, PLA grafted maleic anhydride
For primary raw material, adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming, wherein, in major ingredient, the matter of PLA
It is 45% to measure fraction, and the mass fraction of polycaprolactone is 40%, and the mass fraction of nano imvite is 3%, PLA grafted maleic
The mass fraction of acid anhydride is 12%, and auxiliary agent antioxidant, waterproofing agent, anti ultraviolet agent, the consumption of film forming agent are all the 3% of PLA quality.
Embodiment 2
A kind of reference picture 2, the compound barrier high-strength membrane of multilayer PLA, is obtained by MULTILAYER COMPOSITE, includes the poly- breast of outer layer
Sour hydrophobic film layer 1 ', intermediate layer PLA barrier film layer 3 ', bottom PLA enhancing film layer 5 '.It is further characterized in that：Outer layer
EVA hot-melt adhesive film layer 2 ', the resistance of intermediate layer PLA are equipped between PLA hydrophobic film layer and intermediate layer PLA barrier film layer
EVA hot-melt adhesive film layer 4 is equipped between membrane layer and bottom PLA enhancing film layer.
The thickness of the PLA hydrophobic film layer 1 ' is 0.35mm, and the thickness of PLA barrier film layer 3 ' is 0.55mm, is gathered
The thickness of lactic acid enhancing film layer 5 ' is 0.3mm, and the thickness of EVA hot-melt adhesive film layer 2 ', 4 ' is 0.15mm.
The PLA hydrophobic film layer 1 ' be with PLA, PLA graft glycidyl methacrylate,（3- hydroxyls
Base -3- methyl butyl dimethyl siloxanes）POSS, ethylene-vinyl acetate copolymer are primary raw material, add a small amount of auxiliary agent bag
Include antioxidant, waterproofing agent, anti ultraviolet agent film forming；Wherein, in major ingredient, the mass fraction of PLA is 62%, PLA grafting methyl
The mass fraction of glycidyl acrylate is 12%,（3- hydroxy-3-methyl Butyldimethyl siloxy groups）POSS quality point
Number is 4%, and the mass fraction of ethylene-vinyl acetate copolymer is 22%, auxiliary agent antioxidant, waterproofing agent, anti ultraviolet agent consumption all
For the 3% of PLA quality.
The PLA barrier film layer 3 ' is with PLA, graphene grafting polyisoprene, ethylene-vinyl alcohol copolymer
Resin is primary raw material, and adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming, wherein, in major ingredient, PLA
Mass fraction be 70%, the mass fraction of ethylene-vinyl alcohol copolymer resin is the quality point of graphene graft between 27%
Number is 3%, and auxiliary agent antioxidant, waterproofing agent, anti ultraviolet agent, the consumption of film forming agent are all the 3% of PLA quality.
The PLA enhancing film layer 5 ' is with PLA, polycaprolactone, nano titanium oxide, PLA grafted maleic
Acid anhydride is primary raw material, and adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming, wherein, in major ingredient, PLA
Mass fraction is 50%, and the mass fraction of polycaprolactone is 36%, and the mass fraction of nano imvite is 3%, PLA grafting Malaysia
The mass fraction of acid anhydrides is 11%, and auxiliary agent antioxidant, waterproofing agent, anti ultraviolet agent, the consumption of film forming agent are all PLA quality
3%。
Embodiment 2 more strengthens the thickness of middle PLA hydrophobic film layer compared with embodiment 1, is conducive to composite membrane barrier
Improve, its intensity is substantially similar, and the specific data of two embodiments are as follows：
Claims (6)
1. a kind of compound barrier high-strength membrane of multilayer PLA, is obtained by MULTILAYER COMPOSITE, including outer layer PLA hydrophobic film layer,
Intermediate layer PLA barrier film layer, bottom PLA enhancing film layer, are further characterized in that：The PLA hydrophobic film layer of outer layer is with
Interbed PLA obstructs film layer, and hot melt adhesive film is equipped between intermediate layer PLA barrier film layer and bottom PLA enhancing film layer
Layer；
It is further characterized in that：The PLA hydrophobic film layer be with PLA, PLA graft glycidyl methacrylate,
Eight arms（3- hydroxy-3-methyl Butyldimethyl siloxy groups）POSS, reinforcer are primary raw material, and adding a small amount of auxiliary agent includes resisting
Oxygen agent, waterproofing agent, anti ultraviolet agent film forming；The PLA barrier film layer is with PLA, graphene graft, ethylene-vinyl
Alcohol copolymer resin is primary raw material, and adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming；Reinforcer is poly-
It is a kind of or several in vinyl, linear low density polyethylene resin, polystyrene, ethylene-vinyl acetate copolymer resin
Plant arbitrary proportion collocation；
It using PLA, polycaprolactone, nanometer reinforcer, PLA grafted maleic anhydride is main that PLA enhancing film layer, which is,
Raw material, adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming；Nanometer reinforcer can be nano imvite, nanometer
One kind in titanium dioxide, nano-cellulose.
2. the compound barrier high-strength membrane of a kind of multilayer PLA as claimed in claim 1, it is characterised in that：The PLA is dredged
The thickness of water film is between 0.2-0.5mm, and the thickness of PLA barrier film layer is between 0.3-0.6mm, and PLA increases
The thickness of strong film layer is between 0.2-0.5mm.
3. the compound barrier high-strength membrane of a kind of multilayer PLA as claimed in claim 1, it is characterised in that：The PLA is dredged
Water film is with PLA, PLA graft glycidyl methacrylate, eight arms（3- hydroxy-3-methyl Butyldimethyls
Siloxy group）POSS, reinforcer are primary raw material, and adding a small amount of auxiliary agent includes antioxidant, waterproofing agent, anti ultraviolet agent film forming；Its
In, in major ingredient, the mass fraction of PLA is between 40%-80%, the matter of PLA graft glycidyl methacrylate
Fraction is measured between 8%-15%, eight arms（3- hydroxy-3-methyl Butyldimethyl siloxy groups）POSS mass fraction between
Between 2%-5%, the mass fraction of reinforcer is between 8%-25%, and auxiliary agent antioxidant, waterproofing agent, the consumption of anti ultraviolet agent are all
Between the 2-4% of PLA quality.
4. the compound barrier high-strength membrane of a kind of multilayer PLA as claimed in claim 1, it is characterised in that：The PLA resistance
Membrane layer is that, using PLA, graphene graft, ethylene-vinyl alcohol copolymer resin as primary raw material, addition is helped on a small quantity
Agent bag
Include antioxidant, waterproofing agent, anti ultraviolet agent film forming, wherein, in major ingredient, the mass fraction of PLA between 40%-80%,
The mass fraction of ethylene-vinyl alcohol copolymer resin between 20%-40%, the mass fraction of graphene graft between
2.5%-
Between 4%, auxiliary agent antioxidant, waterproofing agent, anti ultraviolet agent, the consumption of film forming agent are all between the 2-4% of PLA quality.
5. the compound barrier high-strength membrane of a kind of multilayer PLA as claimed in claim 1, it is characterised in that：The PLA increases
Strong film layer is, using PLA, polycaprolactone, nanometer reinforcer, PLA grafted maleic anhydride as primary raw material, to add few
Amount is helped
Agent includes antioxidant, waterproofing agent, anti ultraviolet agent, film forming agent film forming, wherein, in major ingredient, the mass fraction of PLA between
Between 30%-60%, the mass fraction of polycaprolactone is between 30%-60%, and the mass fraction of nanometer reinforcer is between 2.5%-4%
Between, the mass fraction of PLA grafted maleic anhydride between 10-20%, auxiliary agent antioxidant, waterproofing agent, anti ultraviolet agent, into
The consumption of film is all between the 2-4% of PLA quality.
6. the compound barrier high-strength membrane of a kind of multilayer PLA as claimed in claim 1, it is characterised in that：The hot melt adhesive film
Layer is EVA hot-melt adhesive.
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| CN106927128A (en) * | 2017-03-29 | 2017-07-07 | 合肥天沃能源科技有限公司 | A kind of food freshness protection package and preparation method |
| CN109177400B (en) * | 2018-06-19 | 2020-05-19 | 宁波鸿雁包装材料有限公司 | High tensile strength film and production method thereof |
| CN109651785A (en) * | 2018-12-27 | 2019-04-19 | 中国科学院宁波材料技术与工程研究所 | A kind of reflectorized material and preparation method thereof |
| CN110181871A (en) * | 2019-05-07 | 2019-08-30 | 广东瑞远新材料有限公司 | A kind of environment-friendly biodegradable composite soft tube and preparation method thereof |
| CN112678313A (en) * | 2020-12-21 | 2021-04-20 | 东莞市力山纸业有限公司 | Waterproof and moistureproof corrugated carton and using method thereof |
| CN115433383B (en) * | 2022-09-05 | 2023-05-09 | 南通大学 | Biodegradable polylactic acid barrier film with multilayer structure and preparation method thereof |
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| CN102906123A (en) * | 2010-02-11 | 2013-01-30 | Fp创新研究中心 | Nanocomposite biomaterials of nanocrystalline cellulose (ncc) and polylactic acid (pla) |
| EP2660040A1 (en) * | 2012-05-03 | 2013-11-06 | Bayer MaterialScience AG | Multi-layered compound material for producing blanks for coins |
| CN104448567A (en) * | 2014-12-22 | 2015-03-25 | 河北科技大学 | Method for improving mechanical performance of composite material by grafting hyperbranched polyamide on plant fiber surface |
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| JP2015030171A (en) * | 2013-08-01 | 2015-02-16 | 株式会社クレハ | Heat-shrinkable multilayered film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906123A (en) * | 2010-02-11 | 2013-01-30 | Fp创新研究中心 | Nanocomposite biomaterials of nanocrystalline cellulose (ncc) and polylactic acid (pla) |
| EP2660040A1 (en) * | 2012-05-03 | 2013-11-06 | Bayer MaterialScience AG | Multi-layered compound material for producing blanks for coins |
| CN104448567A (en) * | 2014-12-22 | 2015-03-25 | 河北科技大学 | Method for improving mechanical performance of composite material by grafting hyperbranched polyamide on plant fiber surface |
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