CN202965375U - Low-temperature-resistant bi-oriented stretching polyester film - Google Patents
Low-temperature-resistant bi-oriented stretching polyester film Download PDFInfo
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- CN202965375U CN202965375U CN2012206842160U CN201220684216U CN202965375U CN 202965375 U CN202965375 U CN 202965375U CN 2012206842160 U CN2012206842160 U CN 2012206842160U CN 201220684216 U CN201220684216 U CN 201220684216U CN 202965375 U CN202965375 U CN 202965375U
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Abstract
The utility model relates to the technical field of polyester films and particularly relates to a low-temperature-resistant bi-oriented stretching polyester film. The defect of potential safety hazards caused by that the conventional polyester film becomes crisp and is very easy to blow out when being used in an extreme low-temperature (less than -40 DEG C) condition can be solved. The polyester film disclosed by the utility model comprises a base material layer; and low-temperature-resistant layers are respectively arranged at two sides of the base material layer. The low-temperature-resistant bi-oriented stretching polyester film provided by the utility model can be safely used in the extreme low-temperature condition, and has good low temperature resistance.
Description
Technical field
The utility model relates to the polyester film technical field, is specifically related to a kind of low temperature resistant biaxially oriented polyester film.
Background technology
Biaxially oriented polyester film is take PET (PET), polybutylene terephthalate (PBT) or PEN (PEN) resin as raw material, adopt extrusion molding to make sheet, then the thin-film material (BOPET, BOPBT or BOPEN) of making through biaxial tension.Biaxially oriented polyester film not only has good mechanical performance, and has a good rigidly, the advantages such as intensity is high, transparency good, mist degree is low, glossiness is high, well-pressed, folding are widely used in printing, aluminize, composite packaging, protect the fields such as card, medical treatment, insulating materials, photosensitive material, tape, optical instrument.
In market, modal biaxially oriented polyester film is BOPET.The long-term serviceability temperature of traditional polyester film is-40-150 ℃ between, lower than using under-40 ℃ of conditions, material easily occurs and become fragile, even potential safety hazard, appear in the phenomenon such as explosion.Therefore invent a kind of low temperature resistant biaxially oriented polyester film, can widen the application of polyester film, have very important realistic meaning.
Summary of the invention
Use under extreme low temperature (lower than-40 ℃) environment in order to solve existing polyester film, material becomes fragile, and very easily causes explosion, thereby the defective of potential safety hazard occurs, the invention provides a kind of low temperature resistant biaxially oriented polyester film and preparation method thereof.Low temperature resistant biaxially oriented polyester film provided by the invention can be used safely under the environment of extreme low temperature, has outstanding lower temperature resistance, toughness and explosion-proof preferably, and its preparation method technique is simple, easy operating.
In order to solve the problems of the technologies described above, the present invention adopts following technical proposals:
The invention provides a kind of low temperature resistant biaxially oriented polyester film, described polyester film comprises substrate layer, and described substrate layer both sides are provided with low temperature resistant layer; Described low temperature resistant layer comprises the polyester material of 20-60%, the thermoplastic elastomer (TPE) of 20-60% and the low temperature toughening compositions of 5-20%, and described substrate layer comprises the low temperature toughening compositions of polyester material and the 5-20% of 80-95%, and described percentage is weight percentage.
Further, described low temperature resistant layer comprises the polyester material of 30-55%, the thermoplastic elastomer (TPE) of 30-55% and the low temperature toughening compositions of 8-15%, and described substrate layer comprises the low temperature toughening compositions of polyester material and the 8-15% of 85-92%.
Further, described polyester material is selected from a kind of in PET (PET), polybutylene terephthalate (PBT) or PEN (PEN).
Further, described thermoplastic elastomer (TPE) is selected from the combination of a kind of in SBS (SBS), styrene-ethylene-butylene-styrene block copolymer (SEBS), ethylene-octene copolymer (POE), ethylene-vinyl acetate copolymer (EVA), thermoplastic polyurethane (TPU) or at least two kinds.The above-mentioned material mechanical property is excellent, has every excellent properties such as high resiliency, ageing-resistant, oil resistivity, possesses again the characteristics that common plastics is easy to process and processing mode is wide simultaneously.
Further, described low temperature toughening compositions comprises the polyester material of 60-80%, the plasticizer of 5-38%, the antioxidant of 0.1-1%, the compatilizer of 1-20%.
Above-mentioned low temperature toughening compositions can reduce macromolecular material fragility, improve shock resistance;
Described plasticizer is selected from dioctyl adipate (DOA), tricresyl phosphate (TCP) or phosphate toluene diphenyl ester (CDP).
Described antioxidant is selected from irgasfos 168 (tricresyl phosphite (2, the 4-di-tert-butyl-phenyl) ester), antioxidant 1010 (four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester), (3-(3 for antioxidant 1076, the combination of a kind of the 5-di-tert-butyl-hydroxy phenyl) propionic acid n-octadecane alcohol ester), antioxidant 1035(sulfo-diethylene two [3-(3,5-di-tert-butyl-hydroxy phenyl) propionic esters]) or at least two kinds.
Described compatilizer is selected from maleic anhydride graft POE(percent grafting 〉=0.5%), maleic anhydride graft PP(percent grafting 〉=0.5%), glycidyl methacrylate graft POE(percent grafting 〉=0.5%) or glycidyl methacrylate graft PP(percent grafting 〉=0.5%) in a kind of.
Further, described low temperature toughening compositions comprises the polyester material of 60-80%, the plasticizer of 10-20%, the antioxidant of 0.1-1%, the compatilizer of 5-20%.
Further, the thickness of described polyester film is 14-350 μ m, and the thickness of described low temperature resistant layer is 2-25 μ m, and the thickness of described substrate layer is 10-320 μ m.Preferably, described low temperature resistant layer is 1:5-32 with the ratio of substrate layer thickness, and is further preferred, and described low temperature resistant layer is 1:8-32 with the ratio of substrate layer thickness, 1:10,1:12,1:15,1:18,1:20,1:25,1:30.
Further, the thickness of described polyester film is 50-300 μ m, 100-250 μ m, 150 μ m, 188 μ m, 200 μ m, 250 μ m, or 280 μ m; The thickness of described low temperature resistant layer is 4-20 μ m, 8-16 μ m, 9 μ m, 10 μ m, 13 μ m, or 15 μ m; The thickness of described substrate layer is 20-300 μ m, 50-250 μ m, 100 μ m, 150 μ m, 200 μ m, 250 μ m, 132 μ m, 168 μ m, 195 μ m, or 132 μ m.
Further, the thickness of described polyester film is 100-140 μ m, and the thickness of described low temperature resistant layer is 10-20 μ m; The thickness of described substrate layer is 80-100 μ m.This low temperature resistant biaxially oriented polyester film thinner thickness, simple in structure, mechanical property and resistance to low temperature are better.
Further, the thickness of described low temperature resistant layer is 4-12 μ m; The thickness of described substrate layer is 32-150 μ m, and described low temperature resistant layer is 1:8-32 with the ratio of substrate layer thickness.This low temperature resistant biaxially oriented polyester film thinner thickness, simple in structure, and the proportion control of low temperature resistant layer and substrate layer thickness is at 1:8-32, and mechanical property and resistance to low temperature are better.
Further, described low temperature resistant layer comprises PET or the PBT of 30-55%, the SBS of 30-55%, SEBS or POE, and the low temperature toughening compositions of 8-15%, described substrate layer comprises PET or the PBT of 85-92%, the low temperature toughening compositions of 8-15%; Described low temperature toughening compositions comprises the PET of 60-80% or DOA or the TCP of PBT, 5-15%, antioxidant 1035 or the antioxidant 1076 of 0.1-1%, the maleic anhydride graft POE of 12-25% or glycidyl methacrylate graft PP.
Further, described low temperature resistant layer comprises PET or the PEN of 30-55%, the TPU of 30-55%, EVA or POE, and the low temperature toughening compositions of 8-15%, described substrate layer comprises PET or the PEN of 85-92%, the low temperature toughening compositions of 8-15%; Described low temperature toughening compositions comprises the PET of 60-80% or CDP or the TCP of PEN, 15-35%, the irgasfos 168 of 0.1-1% or antioxidant 1010, the maleic anhydride graft PP of 1-8% or glycidyl methacrylate graft POE.
The thickness of described low temperature resistant layer is 4-20 μ m, and material is the PET section of 30-55%, the SBS material of 30-55% and the low temperature toughening compositions of 8-15%; The thickness of described substrate layer is 20-300 μ m, and material is the low temperature toughening compositions of 85% PET section and 15%; Described low temperature toughening compositions comprises 80% PET section, 5% DOA, 1% antioxidant 1035,14% maleic anhydride graft POE(percent grafting 〉=0.5%).
On the other hand, the present invention also provides the preparation method of above-mentioned low temperature resistant biaxially oriented polyester film, and described preparation method comprises the steps:
(1) with polyester material, plasticizer, antioxidant, compatilizer mixing, prepare low temperature resistant toughening compositions by double-screw extruding pelletizing; It is 250-320 ℃ that double screw extruder is respectively distinguished temperature, and engine speed is 200-800rpm, and the strainer screen aperture is 20-100 μ m;
(2) the low temperature resistant toughening compositions of low temperature resistant layer material polyester slice, thermoplastic elastomer (TPE) and step (1) gained is put into drying in a crystallizing and drying tower, the low temperature resistant toughening compositions of substrate layer raw material polyester slice and step (1) gained is put in another crystallizing and drying tower dry, entering respectively two extruders after drying melt extrudes, by the triple extrusion die head casting film-forming, cooling slab, longitudinal stretching, cross directional stretch, thermal finalization processing, rolling, cut, obtain described low temperature resistant biaxially oriented polyester film.
Further, in described step (2), the baking temperature of crystallizing and drying tower is that be 4-6h 140-170 ℃ of drying time, and cooling slab temperature is 15-20 ℃; The longitudinal stretching temperature is 80-95 ℃, and longitudinal stretching is than being 2.5-3.2; The cross directional stretch temperature is 100-125 ℃, and cross directional stretch is than being 2.8-3.2; Heat setting temperature is 250-280 ℃, and heat-setting time is 0.5-2min.
Compared with prior art, low temperature resistant biaxially oriented polyester film provided by the invention can use under lower than-40 ℃ for a long time, has mechanical property, resistance to low temperature and explosion-proof performance preferably.Low temperature resistant biaxially oriented polyester film provided by the invention uses not explosion suddenly under low temperature (40 ℃) condition.Preparation method's technique of low temperature resistant biaxially oriented polyester film provided by the invention is simple, easy operating.
Description of drawings
Fig. 1 is the structural representation of low temperature resistant biaxially oriented polyester film provided by the invention;
Wherein, 1 is substrate layer, and 2 is low temperature resistant layer.
The specific embodiment
As shown in Figure 1, low temperature resistant biaxially oriented polyester film provided by the invention comprises substrate layer 1, and the both sides of described substrate layer 1 are provided with low temperature resistant layer 2; The thickness of described polyester film is 14-350 μ m, and the thickness of described low temperature resistant layer 2 is 2-25 μ m, and the thickness of described substrate layer 1 is 10-320 μ m.Low temperature resistant layer is preferably 1:8-32 with the substrate layer thickness proportion.
The present invention's material and facility used is current material and equipment, and for example: polyester slice and thermoplastic elastomer (TPE) are product common on market; Described plasticizer, antioxidant and compatilizer also can be buied on market.
The preparation method who the invention provides low temperature resistant biaxially oriented polyester film comprises the steps:
(1) with polyester slice, plasticizer, antioxidant, compatilizer mixing, prepare low temperature resistant toughening compositions by double-screw extruding pelletizing; It is 250-320 ℃ that double screw extruder is respectively distinguished temperature, and engine speed is 200-800rpm, and the strainer screen aperture is 20-100 μ m;
(2) the low temperature resistant toughening compositions of low temperature resistant layer material polyester slice, thermoplastic elastomer (TPE) and step (1) gained is put into drying in a crystallizing and drying tower, the low temperature resistant toughening compositions of substrate layer raw material polyester slice and step (1) gained is put in another crystallizing and drying tower dry, entering respectively two extruders after drying melt extrudes, by the triple extrusion die head casting film-forming, cooling slab, longitudinal stretching, cross directional stretch, thermal finalization processing, rolling, cut, obtain described low temperature resistant biaxially oriented polyester film.
Prepare according to the method described above low temperature resistant biaxially oriented polyester film provided by the invention, method of testing is as follows:
Hot strength and elongation at break: according to the GB/T1040-2006 standard, the INSTRON universal testing machine that adopts U.S. Instron company to produce, hot strength and the elongation at break of test polyester film, probe temperature is respectively 25 ℃ ,-40 ℃.
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, the thickness of described low temperature resistant layer is 10 μ m, and material is 60% PET section, 20% SBS material and 20% low temperature toughening compositions; The thickness of described substrate layer is 168 μ m, and material is the low temperature toughening compositions of 80% PET section and 20%; Described low temperature toughening compositions comprises the antioxidant 1010 of 60% PET section, 30% DOA, 0.5% irgasfos 168 and 0.5%, 9% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 1.
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 13 μ m, and material is 40% PBT section, 40% SEBS material and 20% low temperature toughening compositions; The thickness of described substrate layer is 224 μ m, and material is the low temperature toughening compositions of 85% PBT section and 15%; Described low temperature toughening compositions comprises the antioxidant 1035 of 65% PBT section, 30% TCP, 0.5% irgasfos 168 and 0.5%, 4% maleic anhydride graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 1.
Embodiment 3
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 15 μ m, and material is 35% PET section, 60% EVA material and 5% low temperature toughening compositions; The thickness of described substrate layer is 195 μ m, and material is the low temperature toughening compositions of 90% PET section and 10%; Described low temperature toughening compositions comprises the antioxidant 1076 of 70% PEN section, 28% CDP, 0.5% irgasfos 168 and 0.5%, 1% glycidyl methacrylate graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 1.
Embodiment 4
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 9 μ m, and material is 20% PET section, 60% POE material and 20% low temperature toughening compositions; The thickness of described substrate layer is 132 μ m, and material is the low temperature toughening compositions of 94% PET section and 6%; Described low temperature toughening compositions comprises 62% PET section, 25% CDP, 0.25% antioxidant 1010 and 0.25% antioxidant 1035,12.5% glycidyl methacrylate graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 1.
Table 1 embodiment 1-4 gained film and pure PET film performance test table
Embodiment 5
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, the thickness of described low temperature resistant layer is 4 μ m, and material is 30% PET section, 55% SBS material and 15% low temperature toughening compositions; The thickness of described substrate layer is 20 μ m, and material is the low temperature toughening compositions of 85% PET section and 15%; Described low temperature toughening compositions comprises 80% PET section, 5% DOA, 1% antioxidant 1035,14% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 2.
Embodiment 6
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 8 μ m, and material is 55% PBT section, 35% SEBS material and 10% low temperature toughening compositions; The thickness of described substrate layer is 84 μ m, and material is the low temperature toughening compositions of 95% PBT section and 5%; Described low temperature toughening compositions comprises 75% PBT section, 23% TCP, 1% antioxidant 1076,1% glycidyl methacrylate graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 2.
Embodiment 7
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 16 μ m, and material is 40% PEN section, 52% POE material and 8% low temperature toughening compositions; The thickness of described substrate layer is 250 μ m, and material is the low temperature toughening compositions of 90% PET section and 10%; Described low temperature toughening compositions comprises 60% PEN section, 19.9% CDP, 0.1% antioxidant 1010,20% maleic anhydride graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 2.
Embodiment 8
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 20 μ m, and material is 45% PET section, 43% TCP material and 12% low temperature toughening compositions; The thickness of described substrate layer is 260 μ m, and material is the low temperature toughening compositions of 94% PET section and 6%; Described low temperature toughening compositions comprises 60% PET section, 25% CDP, 0.5% irgasfos 168,14.5% glycidyl methacrylate graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 2.
Table 2 embodiment 5-8 gained film performance test table
Embodiment 9
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, the thickness of described low temperature resistant layer is 2 μ m, and material is 35% PET section, 58% SBS material and 7% low temperature toughening compositions; The thickness of described substrate layer is 10 μ m, and material is the low temperature toughening compositions of 82% PET section and 18%; Described low temperature toughening compositions comprises 72% PET section, 20% DOA, 1% irgasfos 168,7% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 3.
Embodiment 10
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 25 μ m, and material is 25% PBT section, 57% EVA material and 18% low temperature toughening compositions; The thickness of described substrate layer is 300 μ m, and material is the low temperature toughening compositions of 83% PBT section and 17%; Described low temperature toughening compositions comprises 69% PBT section, 20% TCP, 1% irgasfos 168,10% maleic anhydride graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 3.
Embodiment 11
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 6 μ m, and material is 45% PET section, 42% EVA material and 13% low temperature toughening compositions; The thickness of described substrate layer is 88 μ m, and material is the low temperature toughening compositions of 92% PET section and 8%; Described low temperature toughening compositions comprises 66% PEN section, 30% CDP, 1% irgasfos 168,3% glycidyl methacrylate graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 3.
Embodiment 12
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 5 μ m, and material is 25% PET section, 60% POE material and 15% low temperature toughening compositions; The thickness of described substrate layer is 40 μ m, and material is the low temperature toughening compositions of 84% PET section and 16%; Described low temperature toughening compositions comprises 70% PET section, 15% CDP, 0.2% antioxidant 1010,14.8% glycidyl methacrylate graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 3.
Table 3 embodiment 9-12 gained film performance test table
Embodiment 13
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, the thickness of described low temperature resistant layer is 7 μ m, and material is 36% PET section, 50% SBS material and 14% low temperature toughening compositions; The thickness of described substrate layer is 216 μ m, and material is the low temperature toughening compositions of 82% PET section and 18%; Described low temperature toughening compositions comprises 70% PET section, 20% DOA, 0.6% irgasfos 168,9.4% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 4.
Embodiment 14
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 10 μ m, and material is 33% PBT section, 57% EVA material and 10% low temperature toughening compositions; The thickness of described substrate layer is 320 μ m, and material is the low temperature toughening compositions of 83% PBT section and 17%; Described low temperature toughening compositions comprises 64% PBT section, 16% TCP, 1% irgasfos 168,19% maleic anhydride graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 4.
Embodiment 15
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 15 μ m, and material is 40% PET section, 48% EVA material and 12% low temperature toughening compositions; The thickness of described substrate layer is 120 μ m, and material is the low temperature toughening compositions of 90% PET section and 10%; Described low temperature toughening compositions comprises 60% PEN section, 38% CDP, 1% irgasfos 168,1% glycidyl methacrylate graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 4.
Embodiment 16
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 20 μ m, and material is 35% PET section, 55% POE material and 10% low temperature toughening compositions; The thickness of described substrate layer is 160 μ m, and material is the low temperature toughening compositions of 84% PET section and 16%; Described low temperature toughening compositions comprises 70% PET section, 15% CDP, 0.2% antioxidant 1010,14.8% glycidyl methacrylate graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 4.
Table 4 embodiment 13-16 gained film performance test table
Embodiment 17
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 12 μ m, and described low temperature resistant layer comprises 55% polyester material PET, 30% thermoplastic elastomer (TPE) SEBS and 15% low temperature toughening compositions; The thickness of described substrate layer is 150 μ m, and described substrate layer comprises 85% polyester material PET and 15% low temperature toughening compositions; Described low temperature toughening compositions comprises 60% polyester material PET, 20% plasticizer tricresyl phosphate (TCP), 1% antioxidant, 19% compatilizer glycidyl methacrylate graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 5.
Embodiment 18
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 10 μ m, and described low temperature resistant layer comprises 40% polyester material PET, 52% thermoplastic elastomer (TPE) (SBS) and 8% low temperature toughening compositions; The thickness of described substrate layer is 80 μ m, and described substrate layer comprises 92% polyester material PET and 8% low temperature toughening compositions; Described low temperature toughening compositions comprises 80% polyester material PET, 10% plasticizer DOA, 0.1% irgasfos 168,9.9% compatilizer maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 5.
Embodiment 19
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 10 μ m, and described low temperature resistant layer comprises 30% polyester material PBT, 55% thermoplastic elastomer (TPE) SEBS and 15% low temperature toughening compositions; The thickness of described substrate layer is 100 μ m, and described substrate layer comprises 92% polyester material PBT and 8% low temperature toughening compositions; Described low temperature toughening compositions comprises 80% polyester material PBT, 14% plasticizer tricresyl phosphate (TCP), 1% antioxidant 1010,5% compatilizer.Gained film correlated performance sees Table 5.
Embodiment 20
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 4 μ m, and described low temperature resistant layer comprises 45% polyester material PEN, 45% thermoplastic elastomer (TPE) POE and 10% low temperature toughening compositions; The thickness of described substrate layer is 128 μ m, and described substrate layer comprises 90% polyester material PEN and 8% low temperature toughening compositions; Described low temperature toughening compositions comprises 70% polyester material PEN, 10% plasticizer phosphate toluene diphenyl ester (CDP), 1% antioxidant, 20% compatilizer glycidyl methacrylate graft PP(percent grafting 〉=0.5%).Gained film correlated performance sees Table 5.
Table 5 embodiment 17-20 gained film performance test table
Embodiment 21
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 4 μ m, and described low temperature resistant layer comprises 30% PET, 55% SBS, 15% low temperature toughening compositions; The thickness of described substrate layer is 90 μ m, and described substrate layer comprises 85% PET, 15% low temperature toughening compositions; Described low temperature toughening compositions comprises 60% PET, 15% DOA, the maleic anhydride graft POE of 1% antioxidant 1035,24%.Gained film correlated performance sees Table 6.
Embodiment 22
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 16 μ m, and described low temperature resistant layer comprises 55% PBT, 30% SEBS, 15% low temperature toughening compositions; The thickness of described substrate layer is 140 μ m, and described substrate layer comprises 92% PET or PBT, 8% low temperature toughening compositions; Described low temperature toughening compositions comprises 80% PBT, 5% DOA or TCP, 0.1% antioxidant 1076,14.9% glycidyl methacrylate graft PP.Gained film correlated performance sees Table 6.
Embodiment 23
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 12 μ m, and described low temperature resistant layer comprises 50% PBT, 40% POE, 10% low temperature toughening compositions; The thickness of described substrate layer is 100 μ m, and described substrate layer comprises 90% PBT, 10% low temperature toughening compositions; Described low temperature toughening compositions comprises 77% PBT, 10.5% DOA or TCP, the glycidyl methacrylate graft PP of 0.5% antioxidant 1035,12%.Gained film correlated performance sees Table 6.
Embodiment 24
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 15 μ m, and described low temperature resistant layer comprises 50% PBT, 40% SEBS, 10% low temperature toughening compositions; The thickness of described substrate layer is 150 μ m, and described substrate layer comprises 85% PBT, 15% low temperature toughening compositions; Described low temperature toughening compositions comprises 64% PBT, 10% DOA, 1% antioxidant 1035 or antioxidant 1076,25% maleic anhydride graft POE.Gained film correlated performance sees Table 6.
Table 6 embodiment 21-24 gained film performance test table
Embodiment 25
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 25 μ m, and described low temperature resistant layer comprises 30% PET, 55% TPU, 15% low temperature toughening compositions; The thickness of described substrate layer is 200 μ m, and described substrate layer comprises 85% PET, 15% low temperature toughening compositions; Described low temperature toughening compositions comprises 60% PET or PEN, 35% CDP, 1% irgasfos 168 or antioxidant 1010,4% maleic anhydride graft PP.Gained film correlated performance sees Table 7.
Embodiment 26
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 20 μ m, and described low temperature resistant layer comprises 55% PEN, 30% EVA, 15% low temperature toughening compositions; The thickness of described substrate layer is 250 μ m, and described substrate layer comprises 92% PEN, 8% low temperature toughening compositions; Described low temperature toughening compositions comprises 80% PEN, 15% TCP, 0.1% irgasfos 168,4.9% glycidyl methacrylate graft POE.Gained film correlated performance sees Table 7.
Embodiment 27
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 20 μ m, and described low temperature resistant layer comprises 30% PEN, 55% POE, 15% low temperature toughening compositions; The thickness of described substrate layer is 140 μ m, and described substrate layer comprises 90% PEN, 10% low temperature toughening compositions; Described low temperature toughening compositions comprises 70% PET or PEN, 28.5% CDP or TCP, 0.5% antioxidant 1010,1% maleic anhydride graft PP.Gained film correlated performance sees Table 7.
Embodiment 28
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 15 μ m, and described low temperature resistant layer comprises 40% PEN, 50% EVA, 10% low temperature toughening compositions; The thickness of described substrate layer is 120 μ m, and described substrate layer comprises 88% PEN, 12% low temperature toughening compositions; Described low temperature toughening compositions comprises 80% PET or PEN, 11% CDP or TCP, 1% irgasfos 168 or antioxidant 1010,8% glycidyl methacrylate graft POE.Gained film correlated performance sees Table 7.
Table 7 embodiment 25-28 gained film performance test table
Embodiment 29
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 4 μ m, and material is 30% PET section, 55% SBS material and 15% low temperature toughening compositions; The thickness of described substrate layer is 32 μ m, and material is the low temperature toughening compositions of 88% PET section and 12%; Described low temperature toughening compositions comprises 80% PET section, 5% DOA, 1% antioxidant 1035,14% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 8.
Embodiment 30
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 20 μ m, and material is 55% PET section, 30% SBS material and 15% low temperature toughening compositions; The thickness of described substrate layer is 300 μ m, and material is the low temperature toughening compositions of 85% PET section and 15%; Described low temperature toughening compositions comprises 80% PET section, 5% DOA, 1% antioxidant 1035,14% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 8.
Embodiment 31
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 10 μ m, and material is 40% PET section, 50% SBS material and 10% low temperature toughening compositions; The thickness of described substrate layer is 180 μ m, and material is the low temperature toughening compositions of 85% PET section and 15%; Described low temperature toughening compositions comprises 80% PET section, 5% DOA, 1% antioxidant 1035,14% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 8.
Embodiment 32
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 15 μ m, and material is 52% PET section, 40% SBS material and 8% low temperature toughening compositions; The thickness of described substrate layer is 200 μ m, and material is the low temperature toughening compositions of 85% PET section and 15%; Described low temperature toughening compositions comprises 80% PET section, 5% DOA, 1% antioxidant 1035,14% maleic anhydride graft POE(percent grafting 〉=0.5%).Gained film correlated performance sees Table 8.
Table 8 embodiment 29-32 gained film performance test table
Comparative Examples 1
Prepare according to the method described above polyester film, the thickness of described low temperature resistant layer is 10 μ m, and material is 80% PET section, 10% SBS material and 10% low temperature toughening compositions; The thickness of described substrate layer is 168 μ m, and material is the low temperature toughening compositions of 98% PET section and 2%; Described low temperature toughening compositions comprises the antioxidant 1010 of 60% PET section, 30% DOA, 0.5% irgasfos 168 and 0.5%, 9% maleic anhydride graft POE(percent grafting 〉=0.5%).
The polyester slice too high levels of the substrate layer of above-mentioned polyester film and low temperature resistant layer, the thermoplastic elastic body burden of low temperature resistant layer is too low, and gained film resistance to low temperature is relatively poor, and correlated performance sees Table 9.
Comparative Examples 2
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 13 μ m, and material is 5% PBT section, 70% SEBS material and 25% low temperature toughening compositions; The thickness of described substrate layer is 224 μ m, and material is the low temperature toughening compositions of 60% PBT section and 40%; Described low temperature toughening compositions comprises the antioxidant 1035 of 65% PBT section, 30% TCP, 0.5% irgasfos 168 and 0.5%, 4% maleic anhydride graft PP(percent grafting 〉=0.5%).
The polyester slice content of the substrate layer of above-mentioned polyester film and low temperature resistant layer is too low, the thermoplastic elastomer (TPE) too high levels of low temperature resistant layer, and the content of low temperature toughening compositions is also too high, and gained film resistance to low temperature is relatively poor, and correlated performance sees Table 9.
Comparative Examples 3
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 15 μ m, and material is 35% PET section, 60% EVA material and 5% low temperature toughening compositions; The thickness of described substrate layer is 195 μ m, and material is the low temperature toughening compositions of 90% PET section and 10%; Described low temperature toughening compositions comprises 25% PEN section, 45% CDP, 1% irgasfos 168,29% glycidyl methacrylate graft POE(percent grafting 〉=0.5%).
Plasticizer and compatibilizer content in the low temperature toughening compositions of the substrate layer of above-mentioned polyester film and low temperature resistant layer are too high, cause gained film cost to improve, and the film cost performance reduces, and correlated performance sees Table 9.
Comparative Examples 4
Prepare according to the method described above low temperature resistant biaxially oriented polyester film, wherein, the thickness of described low temperature resistant layer is 9 μ m, and material is 25% PET section, 60% POE material and 15% low temperature toughening compositions; The thickness of described substrate layer is 132 μ m, and material is the low temperature toughening compositions of 94% PET section and 6%; Described low temperature toughening compositions comprises 90% PET section, 1% CDP, 0.5% antioxidant 1010,8.5% glycidyl methacrylate graft POE(percent grafting 〉=0.5%).
Polyester slice too high levels in the low temperature toughening compositions of the substrate layer of above-mentioned polyester film and low temperature resistant layer, plasticizer loading is too low, causes gained film resistance to low temperature to reduce, the mechanical performance variation, correlated performance sees Table 9.
Table 9 Comparative Examples 1-4 gained film performance test table
Can draw according to the data of table 1 to table 9, low temperature resistant biaxially oriented polyester film provided by the invention is compared with Comparative Examples with pure PET film, can use for a long time under lower than-40 ℃, has outstanding mechanical property, resistance to low temperature and explosion-proof performance; Data by table 7 and table 8 can draw, and the performance of the polyester film of above-described embodiment 25-32 gained is especially excellent.
The above is only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.Every equalization that content is done according to the present invention changes and modifies, and all is encompassed in the scope of the claims of the present invention.
Claims (3)
1. a low temperature resistant biaxially oriented polyester film, is characterized in that, described polyester film comprises substrate layer, and described substrate layer both sides are provided with low temperature resistant layer; The thickness of described polyester film is 14-350 μ m, and the thickness of described low temperature resistant layer is 2-25 μ m, and the thickness of described substrate layer is 10-320 μ m.
2. low temperature resistant biaxially oriented polyester film according to claim 1, is characterized in that, the thickness of described polyester film is 100-140 μ m, and the thickness of described low temperature resistant layer is 10-20 μ m; The thickness of described substrate layer is 80-100 μ m.
3. low temperature resistant biaxially oriented polyester film according to claim 1, is characterized in that, the thickness of described low temperature resistant layer is 4-12 μ m; The thickness of described substrate layer is 32-150 μ m.
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