CN102585447A - White polyester film and preparation method thereof - Google Patents
White polyester film and preparation method thereof Download PDFInfo
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- CN102585447A CN102585447A CN2011104176292A CN201110417629A CN102585447A CN 102585447 A CN102585447 A CN 102585447A CN 2011104176292 A CN2011104176292 A CN 2011104176292A CN 201110417629 A CN201110417629 A CN 201110417629A CN 102585447 A CN102585447 A CN 102585447A
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- polyester film
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- 229920006267 polyester film Polymers 0.000 title claims abstract description 57
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 75
- 229920000728 polyester Polymers 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 37
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 26
- 238000005266 casting Methods 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 21
- 230000004927 fusion Effects 0.000 claims description 20
- 238000001035 drying Methods 0.000 claims description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 238000009998 heat setting Methods 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 13
- 239000006185 dispersion Substances 0.000 claims description 12
- 239000006096 absorbing agent Substances 0.000 claims description 10
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 10
- 239000012964 benzotriazole Substances 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 238000005453 pelletization Methods 0.000 claims description 10
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 8
- 230000003179 granulation Effects 0.000 claims description 8
- 239000011787 zinc oxide Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 150000001412 amines Chemical class 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 21
- 238000002310 reflectometry Methods 0.000 abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000004383 yellowing Methods 0.000 abstract 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- 238000010298 pulverizing process Methods 0.000 description 6
- 239000004135 Bone phosphate Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 5
- 229920002565 Polyethylene Glycol 400 Polymers 0.000 description 4
- -1 terepthaloyl moietie Chemical compound 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 3
- YAXWOADCWUUUNX-UHFFFAOYSA-N 1,2,2,3-tetramethylpiperidine Chemical class CC1CCCN(C)C1(C)C YAXWOADCWUUUNX-UHFFFAOYSA-N 0.000 description 3
- 229920002799 BoPET Polymers 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 description 3
- CDXVUROVRIFQMV-UHFFFAOYSA-N oxo(diphenoxy)phosphanium Chemical compound C=1C=CC=CC=1O[P+](=O)OC1=CC=CC=C1 CDXVUROVRIFQMV-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 239000008116 calcium stearate Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000007520 diprotic acids Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229960003511 macrogol Drugs 0.000 description 2
- HRRDCWDFRIJIQZ-UHFFFAOYSA-N naphthalene-1,8-dicarboxylic acid Chemical compound C1=CC(C(O)=O)=C2C(C(=O)O)=CC=CC2=C1 HRRDCWDFRIJIQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 2
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 2
- MNAHQWDCXOHBHK-UHFFFAOYSA-N 1-phenylpropane-1,1-diol Chemical compound CCC(O)(O)C1=CC=CC=C1 MNAHQWDCXOHBHK-UHFFFAOYSA-N 0.000 description 1
- MMEDJBFVJUFIDD-UHFFFAOYSA-N 2-[2-(carboxymethyl)phenyl]acetic acid Chemical compound OC(=O)CC1=CC=CC=C1CC(O)=O MMEDJBFVJUFIDD-UHFFFAOYSA-N 0.000 description 1
- NLSFWPFWEPGCJJ-UHFFFAOYSA-N 2-methylprop-2-enoyloxysilicon Chemical compound CC(=C)C(=O)O[Si] NLSFWPFWEPGCJJ-UHFFFAOYSA-N 0.000 description 1
- UOBYKYZJUGYBDK-UHFFFAOYSA-N 2-naphthoic acid Chemical compound C1=CC=CC2=CC(C(=O)O)=CC=C21 UOBYKYZJUGYBDK-UHFFFAOYSA-N 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- WZELXJBMMZFDDU-UHFFFAOYSA-N Imidazol-2-one Chemical class O=C1N=CC=N1 WZELXJBMMZFDDU-UHFFFAOYSA-N 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003053 piperidines Chemical class 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Abstract
Provided are a white polyester film and a preparation method thereof. The white polyester film is formed by pure polyester and a functional master batch in the two-direction drawing process. The functional master batch occupies 12% to 65% of that of the pure polyester and is composed of a first functional master batch and a second functional master batch, and the weight ratio of the first functional master batch and the second functional master batch ranges from 1.0:1 to 150:1. The film keeps high reflectivity and high hidden performance, has excellent ageing-resistant performance, and is capable of effectively preventing yellowing degradation, and simple in preparation method and process. The prepared white polyester film can be widely used in liquid crystal display industry and solar battery industry.
Description
Technical field
The present invention relates to white polyester film, more particularly, the present invention relates to a kind of ageing-resistant white polyester film and preparation method thereof.
Background technology
Polyester film (PET film) be a kind of performance than more comprehensive film, compare advantage such as it has, and transmittance is good, glossy, superior, obdurability and resistance to impact shock, and dimensional stabilizing with other thermoplastic plastics.White polyester film is because high brightness, reflection characteristic and excellent disguise have unique application at aspects such as advertisement tag, pictorial display and solar cells, particularly in the FPD industry, as the reflectance coating of backlight source module and indispensable.Method as exhibit high brilliance mainly contains: 1. in polyester film, add inorganic particulates such as permanent white, utilize the interface of polyester and inorganic particulate and be that luminous reflectance is carried out at the hole interface of the small hole that nuclear generated with the particle; 2. in polyester film, adding with the inconsistent resin of polyester and with it is that karyomorphism becomes small hole, utilizes this hole interface to carry out luminous reflectance.
In recent years; Along with the application of white polyester film in liquid-crystal display industry and solar cell industry constantly enlarges; White polyester film is prone to hydrothermal aging and thermo-oxidative ageing take place under hot conditions, causes the problem of polyester film xanthochromia degraded also more and more to draw attention.More than 25 years, this requires the PET film of one of solar cell backboard important composition to have excellent ageing-resistant performance at the outdoor application time limit for solar cell backboard particularly, performance requriements, and this is that the common PET film is beyond one's reach.Therefore, how solving the problem that under hot conditions, is prone to take place hydrothermal aging and thermo-oxidative ageing that existing white polyester film exists in application, is the problem that industry is paid special attention to.
Summary of the invention
The technical problem that the present invention will solve is: a kind of white polyester film is provided, and this film has excellent ageing-resistant performance when keeping high-reflectivity and highly concealed type, can stop the xanthochromia degraded of polyester film effectively.
Another technical problem that the present invention will solve is: the preparation method that a kind of white polyester film is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is following:
A kind of white polyester film; Make through stretch processes by pure polyester and functional master batch; Said functional master batch is 12%～65% of a pure weight polyester; Functional master batch is made up of first functional master batch and second functional master batch, and the weight ratio of first functional master batch and second functional master batch is 1.0:1～150:1.
Above-mentioned polyester film, said first functional master batch is made up of 35～70% pure polyester, 27～55% titanium oxide and 3～10% permanent white, zinc oxide or zirconium white; Said first functional master batch is prepared by following method:
(1) with pure polyester drying and crushing;
(2) material and titanium oxide, permanent white, zinc oxide or the zirconium white that step (1) are obtained mix;
(3) mixture that step (2) is obtained is processed first functional master batch through the twin screw extruder extruding pelletization.
Above-mentioned polyester film, said second functional master batch is made up of 87～99.8% pure polyester, 0.1～5% stablizer, 0.05～5% dispersion agent and 0.05～3% ultraviolet absorbers; Said second functional master batch is prepared by following method:
(1) with pure polyester drying and crushing;
(2) stablizer, dispersion agent and ultraviolet absorbers are mixed;
(3) mixture that material that step (1) is obtained and step (2) obtain is added to fusion in the twin screw extruder, granulation, processes second functional master batch.
Above-mentioned polyester film, said stablizer are metallic salt or phosphoric acid ester.
Above-mentioned polyester film, said dispersion agent are polyethylene glycols or silicane.
Above-mentioned polyester film, said ultraviolet absorbers are benzotriazole category or hindered amines.
A kind of preparation method of white polyester film, it carries out as follows:
(1) melt extrudes: extrude through co-extrusion die head after pure polyester and functional master batch are pre-mixed drying, fusion;
(2) casting sheet: melt forms unformed polyester casting sheet on the cooling roller that rotates, the thickness of polyester casting sheet is 1500 μ m～5000 μ m;
(3) two-way stretch: after the preheating of cooled polyester casting sheet, 2.0～4.4 times of longitudinal stretchings, cross directional stretch is 2.5～4.5 times again;
(4) typing rolling: the film heat setting type after will stretching, rolling after cooling obtains white polyester film.
Above-mentioned preparation method, said to melt extrude temperature be 240 ℃ ~ 300 ℃.
Above-mentioned preparation method, said film heat setting temperature is 170 ℃ ~ 200 ℃.
The beneficial effect that the present invention obtains is embodied in:
(1) the present invention uses through the combination of consumption, first functional master batch and second functional master batch of function masterbatch; Guaranteed that film has high brightness, highly reflective and covering property of height; Having stoped polyester is thermal ageing and thermo-oxidative ageing under hot conditions; Make film have excellent ageing-resistant performance, and then improved the service efficiency of product.
(2) the present invention is through prepare first functional master batch and second functional master batch in advance; Required additive is scattered among the pure polyester equably; Avoided the dispersion of these additives in polyester film inhomogeneous; Guaranteed that these additives and polyester film have better consistency, made polyester film each item performance stable and uniform more.
Embodiment
Among the present invention, said pure polyester is the polymkeric substance of diprotic acid and divalent alcohol, wherein; Diprotic acid can be the straight chain fat diacid, but mainly is aromatic diacid, like terephthalic acid, to phenylene-diacetic acid, to naphthalic acid etc.; Preferred terephthalic acid and to naphthalic acid, more preferably terephthalic acid; Divalent alcohol mainly is that carbonatoms is 2～4 aliphatic diol, like terepthaloyl moietie, Ucar 35, butyleneglycol etc., and preferred terepthaloyl moietie and butyleneglycol, more preferably terepthaloyl moietie.Except mentioned component, PET Resin/Poyester Chips Bottle Grade can also be to add a spot of m-phthalic acid, phthalic acid, cyclohexanedimethanol, dihydroxyphenyl propane or 2, the modified copolyester of materials such as 6-naphthalic acid.Being fit to pure polyester of the present invention is polyethylene terephthalate.
First functional master batch of the present invention is made up of 35～70% pure polyester, 27～55% titanium oxide, other inorganic particulates of 3～10%; Other inorganic particulates can be selected from one or more among permanent white, zinc oxide, zirconium white, aluminum oxide, titanium oxide, the White tin oxide; Consider polyester film whiteness and concealed requirement, other inorganic particulates are preferably by permanent white, zinc oxide or zirconium white.Wherein, the particle diameter of titanium oxide is controlled between 1.0～100 μ m, because add the whitening that micron-sized titanium oxide can guarantee film, higher light stability and reflectivity.
Second functional master batch of the present invention is made up of 87～99.8% polyester, 0.1～5% stablizer, 0.05～5% dispersion agent and 0.05～3% ultraviolet absorbers.
Stablizer of the present invention can be a metallic salt, like lead sulfate tribasic, dibasic lead phosphite, calcium stearate and dimercapto 2-ethyl hexyl ethanoate dioctyltin, and preferred lead sulfate tribasic and dibasic lead phosphite; Also can be phosphoric acid ester, like triphenylphosphate and phosphorous acid diphenyl ester, preferred phosphorous acid diphenyl ester.
Dispersion agent of the present invention is polyethylene glycols or silicane, like Macrogol 200, PEG 400, vinyl silanes, aminosilane, methacryloxy silane etc., preferred dispersing property excellent and with polyester consistency PEG 400 preferably.
Ultraviolet absorbers of the present invention; Can be hindered amines; Like piperidine derivative, imidazolone derivatives and azacycloalkyl ketone derivatives etc., can be benzotriazole category, like 2-(2 ˊ-hydroxyl-5 ˊ-aminomethyl phenyl) benzotriazole and 2-(2 ˊ-hydroxyl-3 ˊ; 5 ˊ-two uncle phenyl)-and 5-chlorination benzotriazole, the tetramethyl piperidine analog derivative and 2-(2 ˊ-hydroxyl-5 ˊ-aminomethyl phenyl) benzotriazole that preferably have better thermostability and polyester consistency.
First functional master batch of the present invention can be made by following method: by weight percentage; 35～55% dried pure PET Resin/Poyester Chips Bottle Grades are pulverized; Mix with 27～55% titanium oxide, 3～10% inorganic particulate; In twin screw extruder, carry out the surface treatment extruding pelletization under the molten state, process first functional master batch.
Second functional master batch of the present invention can be made by following method: by weight percentage; 87～99.8% dried pure PET Resin/Poyester Chips Bottle Grades are pulverized; Mix with 0.1～5% the stablizer that mixes in advance, 0.05～5% dispersion agent and 0.05～3% ultraviolet absorbers; In twin screw extruder, carry out the surface treatment extruding pelletization under the molten state, process second functional master batch.
First functional master batch of the present invention and second functional master batch all adopt the method that is pre-mixed, and can guarantee additive stabilized uniform dispersion in polyester, avoid the gathering and the precipitate and separate of additive in polyester fusion drawn process.
The thickness of polyester film according to the invention is at 0.02mm～0.35mm, preferred 0.05mm～0.30mm, more preferably 0.075mm～0.25mm.
The preparation method of white polyester film of the present invention comprises the steps:
(1) pure PET Resin/Poyester Chips Bottle Grade, first functional master batch and second functional master batch being pre-mixed dry back fusion extrudes through co-extrusion die head;
(2) melt forms unformed polyester casting sheet on the cooling roller that rotates, and the thickness of polyester casting sheet is 1500 μ m～5000 μ m.
(3) with after the cooled sheet preheating, 2.4～4.4 times of longitudinal stretchings, 2.5～4.5 times of cross directional stretchs;
(4) the film heat setting type after will stretching, rolling after cooling obtains white polyester film.
The temperature that melt extrudes described in the present invention is 240 ℃ ~ 300 ℃, and described film heat setting temperature is 170 ℃ ~ 200 ℃
Below in conjunction with specific embodiment the present invention is specified, but the present invention is not limited thereto.
Embodiment 1
With the pure polyester drying and crushing of 70g, mix with the titanium oxide of 27g and the zirconium white of 3g then, through the twin screw extruder extruding pelletization, process first functional master batch, subsequent use.
Pure polyester drying and crushing with 99.8g; The aminosilane of 0.1g lead sulfate tribasic, 0.05g and the 2-of 0.05g (2 ˊ-hydroxyl-3 ˊ, 5 ˊ-two uncle phenyl)-5-chlorination benzotriazole are mixed; Polyester after mixture and the pulverizing is added to fusion in the twin screw extruder, granulation, processes second functional master batch, subsequent use.
With first functional master batch with contain second functional master batch by the 150:1 mixed evenly after, press the 12:88 mixed with pure PET Resin/Poyester Chips Bottle Grade again, fusion in twin screw extruder; Be cast on the cooling roller of rotation; Obtain the amorphous casting sheet that thickness is about 1500 μ m, this casting sheet is preheating to 100 ℃ through infrared, carry out longitudinal stretching with the multiplying power of 2.4:1; Sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine; Multiplying power with 2.5:1 under about 110 ℃ condition is carried out cross directional stretch, through polyester film heat setting type under about 180 ℃ of conditions of biaxial stretch-formed orientation, finally through overcooling; Processes such as rolling obtain white polyester film, survey its optics, mechanics and hydrothermal aging performance.
Embodiment 2
With the pure polyester drying and crushing of 56g, mix with the titanium oxide of 40g and the zinc oxide of 4g then, through the twin screw extruder extruding pelletization, process first functional master batch, subsequent use.
Pure polyester drying and crushing with 98g; The PEG 400 of 1.0g calcium stearate, 0.5g and the 2-of 0.5g (2 ˊ-hydroxyl-5 ˊ-aminomethyl phenyl) benzotriazole are mixed; Polyester after mixture and the pulverizing is added to fusion in the twin screw extruder, granulation, processes second functional master batch, subsequent use.
With first functional master batch and second functional master batch press the 120:1 mixed evenly after, press the 20:80 mixed with pure PET Resin/Poyester Chips Bottle Grade again, fusion in twin screw extruder; Be cast on the cooling roller of rotation; Obtain the amorphous casting sheet that thickness is about 2000 μ m, this casting sheet is preheating to 100 ℃ through infrared, carry out longitudinal stretching with the multiplying power of 2.8:1; Sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine; Multiplying power with 2.9:1 under about 110 ℃ condition is carried out cross directional stretch, through polyester film heat setting type under about 170 ℃ of conditions of biaxial stretch-formed orientation, finally through overcooling; Processes such as rolling obtain white polyester film, survey its optics, mechanics and hydrothermal aging performance.
Embodiment 3
With the pure polyester drying and crushing of 50g, mix with the titanium oxide of 44g and the zirconium white of 6g then, through the twin screw extruder extruding pelletization, process first functional master batch, subsequent use.
Pure polyester drying and crushing with 96g; The Macrogol 200 of 2.0g dibasic lead phosphite, 1.0g and the tetramethyl piperidine analog derivative of 1.0g are mixed; Polyester after mixture and the pulverizing is added to fusion in the twin screw extruder, granulation, processes second functional master batch, subsequent use.
With first functional master batch and second functional master batch press the 90:1 mixed evenly after, press the 30:70 mixed with pure PET Resin/Poyester Chips Bottle Grade again.Fusion in twin screw extruder is cast on the cooling roller of rotation, obtains the amorphous casting sheet that thickness is about 2500 μ m; This casting sheet is preheating to 100 ℃ through infrared; Multiplying power with 3.1:1 is carried out longitudinal stretching, and the sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine, and the multiplying power with 3.2:1 under about 110 ℃ condition is carried out cross directional stretch; Polyester film heat setting type under about 180 ℃ of conditions through biaxial stretch-formed orientation; Finally through overcooling, processes such as rolling obtain white polyester film, survey its optics, mechanics and hydrothermal aging performance.
Embodiment 4
With the pure polyester drying and crushing of 35g, mix with the titanium oxide of 55g and the permanent white of 10g then, through the twin screw extruder extruding pelletization, process first functional master batch, subsequent use.
Pure polyester drying and crushing with 92.5g; The vinyl silanes of 3.0g triphenylphosphate, 3.0g and the 2-of 1.5g (2 ˊ-hydroxyl-5 ˊ-aminomethyl phenyl) benzotriazole are mixed; Polyester after mixture and the pulverizing is added to fusion in the twin screw extruder, granulation, processes second functional master batch, subsequent use.
With first functional master batch and second functional master batch press the 50:1 mixed evenly after, press the 40:60 mixed with pure PET Resin/Poyester Chips Bottle Grade again.Fusion in twin screw extruder is cast on the cooling roller of rotation, obtains the amorphous casting sheet that thickness is about 3000 μ m; This casting sheet is preheating to 100 ℃ through infrared; Multiplying power with 3.5:1 is carried out longitudinal stretching, and the sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine, and the multiplying power with 3.4:1 under about 110 ℃ condition is carried out cross directional stretch; Polyester film heat setting type under about 190 ℃ of conditions through biaxial stretch-formed orientation; Finally through overcooling, processes such as rolling obtain white polyester film, survey its optics, mechanics and hydrothermal aging performance.
Embodiment 5
With the pure polyester drying and crushing of 40g, mix with the titanium oxide of 50g and the zinc oxide of 10g then, through the twin screw extruder extruding pelletization, process first functional master batch, subsequent use.
Pure polyester drying and crushing with 90g; The PEG 400 of 4g lead sulfate tribasic, 4g and the 2-of 2g (2 ˊ-hydroxyl-3 ˊ, 5 ˊ-two uncle phenyl)-5-chlorination benzotriazole are mixed; Polyester after mixture and the pulverizing is added to fusion in the twin screw extruder, granulation, processes second functional master batch, subsequent use.
With first functional master batch and second functional master batch press the 20:1 mixed evenly after, press the 48:52 mixed with pure PET Resin/Poyester Chips Bottle Grade again.Fusion in twin screw extruder is cast on the cooling roller of rotation, obtains the amorphous casting sheet that thickness is about 4000 μ m; This casting sheet is preheating to 100 ℃ through infrared; Multiplying power with 4.0:1 is carried out longitudinal stretching, and the sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine, and the multiplying power with 4.0:1 under about 110 ℃ condition is carried out cross directional stretch; Polyester film heat setting type under about 190 ℃ of conditions through biaxial stretch-formed orientation; Finally through overcooling, processes such as rolling obtain white polyester film, survey its optics, mechanics and hydrothermal aging performance.
Embodiment 6
With the pure polyester drying and crushing of 41g, mix with the titanium oxide of 55g and the permanent white of 4g then, through the twin screw extruder extruding pelletization, process first functional master batch, subsequent use.
Pure polyester drying and crushing with 87g; The phosphorous acid diphenyl ester of 5g lead sulfate tribasic, 5g and the tetramethyl piperidine analog derivative of 3g are mixed; Polyester after mixture and the pulverizing is added to fusion in the twin screw extruder, granulation, processes second functional master batch, subsequent use.
With first functional master batch and second functional master batch press the 1:1 mixed evenly after, press the 65:35 mixed with pure PET Resin/Poyester Chips Bottle Grade again.Fusion in twin screw extruder is cast on the cooling roller of rotation, obtains the amorphous casting sheet that thickness is about 5000 μ m; This casting sheet is preheating to 100 ℃ through infrared; Multiplying power with 4.4:1 is carried out longitudinal stretching, and the sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine, and the multiplying power with 4.5:1 under about 110 ℃ condition is carried out cross directional stretch; Polyester film heat setting type under about 200 ℃ of conditions through biaxial stretch-formed orientation; Finally through overcooling, processes such as rolling obtain white polyester film, survey its optics, mechanics and hydrothermal aging performance.
Comparative Examples 1
With pure polyester through after the drying crystalline with the masterbatch of forming by pure polyester, 55g titanium oxide, the 10g permanent white of 35g press the 52:48 mixed even after; Fusion in twin screw extruder is cast on the cooling roller of rotation, obtains the amorphous casting sheet that thickness is about 3000 μ m; This casting sheet is preheating to 100 ℃ through infrared; Multiplying power with 3.5:1 is carried out longitudinal stretching, and the sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine, and the multiplying power with 3.4:1 under about 110 ℃ condition is carried out cross directional stretch; Polyester film heat setting type under about 180 ℃ of conditions through biaxial stretch-formed orientation; Finally through overcooling, processes such as rolling obtain white polyester film, survey its optics, mechanics and hydrothermal aging performance.
Comparative Examples 2
With pure polyester with by second functional master batch of the ultraviolet absorbers of the dispersion agent of the stablizer of the pure polyester of 90g, 4g, 4g and 2g press the 97.7:2.3 mixed even after; Fusion in twin screw extruder is cast on the cooling roller of rotation, obtains the amorphous casting sheet that thickness is about 3000 μ m; This casting sheet is preheating to 100 ℃ through infrared; Multiplying power with 3.5:1 is carried out longitudinal stretching, and the sheet film behind the longitudinal stretching is delivered in the horizontal tenter machine, and the multiplying power with 3.4:1 under about 110 ℃ condition is carried out cross directional stretch; Polyester film heat setting type under about 180 ℃ of conditions through biaxial stretch-formed orientation; Finally through overcooling, processes such as rolling obtain transparent polyester film, survey its optics, mechanics and hydrothermal aging performance.
Table one: optical property and mechanical property contrast before and after aging
In the table, the testing method of each item performance is following:
1. reflectivity: the spectrophotometer U-3310 that makes with Hitachi tests.
2. tensile strength and elongation at break: according to the GB/T13542.2-2009 standard testing.
3. percent thermal shrinkage: according to the GB/T13542.2-2009 standard testing.
4. hydrothermal aging performance: with reference to the ASTMD-257 standard, wherein print is 85 ℃ of temperature, fixed temperature and humidity 2000h under humidity 85% condition (outer 25 years of respective chamber/chambers).
Claims (9)
1. white polyester film; It is made through stretch processes by pure polyester and functional master batch; It is characterized in that; Said functional master batch is 12%～65% of a pure weight polyester, and functional master batch is made up of first functional master batch and second functional master batch, and the weight ratio of first functional master batch and second functional master batch is 1.0:1～150:1.
2. white polyester film according to claim 1 is characterized in that, said first functional master batch is made up of 35～70% pure polyester, 27～55% titanium oxide and 3～10% permanent white, zinc oxide or zirconium white; Said first functional master batch is prepared by following method:
(1) with pure polyester drying and crushing;
(2) material and titanium oxide, permanent white, zinc oxide or the zirconium white that step (1) are obtained mix;
(3) mixture that step (2) is obtained is processed first functional master batch through the twin screw extruder extruding pelletization.
3. white polyester film according to claim 2 is characterized in that, said second functional master batch is made up of 87～99.8% pure polyester, 0.1～5% stablizer, 0.05～5% dispersion agent and 0.05～3% ultraviolet absorbers; Said second functional master batch is prepared by following method:
(1) with pure polyester drying and crushing;
(2) stablizer, dispersion agent and ultraviolet absorbers are mixed;
(3) mixture that material that step (1) is obtained and step (2) obtain is added to fusion in the twin screw extruder, granulation, processes second functional master batch.
4. white polyester film according to claim 3 is characterized in that, said stablizer is metallic salt or phosphoric acid ester.
5. white polyester film according to claim 4 is characterized in that, said dispersion agent is polyethylene glycols or silicane.
6. white polyester film according to claim 5 is characterized in that, said ultraviolet absorbers is benzotriazole category or hindered amines.
7. method for preparing like claim 1,2,3,4,5 or 6 said white polyester films, it is characterized in that: it carries out as follows:
(1) melt extrudes: extrude through co-extrusion die head after pure polyester and functional master batch are pre-mixed drying, fusion;
(2) casting sheet: melt forms unformed polyester casting sheet on the cooling roller that rotates, the thickness of polyester casting sheet is 1500 μ m～5000 μ m;
(3) two-way stretch: after the preheating of cooled polyester casting sheet, 2.0～4.4 times of longitudinal stretchings, cross directional stretch is 2.5～4.5 times again;
(4) typing rolling: the film heat setting type after will stretching, rolling after cooling obtains white polyester film.
8. preparation method according to claim 7 is characterized in that, said to melt extrude temperature be 240 ℃ ~ 300 ℃.
9. preparation method according to claim 8 is characterized in that, said film heat setting temperature is 170 ℃ ~ 200 ℃.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924905A (en) * | 2016-04-28 | 2016-09-07 | 佛山杜邦鸿基薄膜有限公司 | Polyester film |
| CN115625870A (en) * | 2022-11-30 | 2023-01-20 | 江苏康辉新材料科技有限公司 | Super-weather-resistant white polyester film and preparation method thereof |
| CN116814048A (en) * | 2023-06-29 | 2023-09-29 | 常州勤邦新材料科技有限公司 | Functional master batch for producing UV-resistant polyester chips |
| CN116836524A (en) * | 2023-07-31 | 2023-10-03 | 常州勤邦新材料科技有限公司 | Polyester functional master batch for producing high-reflection backboard film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381508A (en) * | 2008-10-27 | 2009-03-11 | 南京金中达新材料有限公司 | White biaxial stretching polyester film and production method thereof |
| CN101733925A (en) * | 2009-10-26 | 2010-06-16 | 申达集团有限公司 | Method for preparing polyester film for photovoltaic cell backplane |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381508A (en) * | 2008-10-27 | 2009-03-11 | 南京金中达新材料有限公司 | White biaxial stretching polyester film and production method thereof |
| CN101733925A (en) * | 2009-10-26 | 2010-06-16 | 申达集团有限公司 | Method for preparing polyester film for photovoltaic cell backplane |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105924905A (en) * | 2016-04-28 | 2016-09-07 | 佛山杜邦鸿基薄膜有限公司 | Polyester film |
| CN115625870A (en) * | 2022-11-30 | 2023-01-20 | 江苏康辉新材料科技有限公司 | Super-weather-resistant white polyester film and preparation method thereof |
| CN116814048A (en) * | 2023-06-29 | 2023-09-29 | 常州勤邦新材料科技有限公司 | Functional master batch for producing UV-resistant polyester chips |
| CN116836524A (en) * | 2023-07-31 | 2023-10-03 | 常州勤邦新材料科技有限公司 | Polyester functional master batch for producing high-reflection backboard film |
| CN116836524B (en) * | 2023-07-31 | 2024-04-02 | 常州勤邦新材料科技有限公司 | Polyester functional master batch for producing high-reflection backboard film |
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| CN102585447B (en) | 2014-05-14 |
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Effective date of registration: 20240326 Address after: 230041 Lekai Industrial Park, zone a, Xinzhan Industrial Park, Xinzhan District, Hefei City, Anhui Province Patentee after: HEFEI LUCKY SCIENCE & TECHNOLOGY INDUSTRY Co.,Ltd. Country or region after: China Patentee after: LUCKY HEALTHCARE CO.,LTD. Patentee after: Tianjin Lekai Film Technology Co.,Ltd. Address before: 230041 Lekai Industrial Park, zone a, Xinzhan Industrial Park, Xinzhan District, Hefei City, Anhui Province Patentee before: HEFEI LUCKY SCIENCE & TECHNOLOGY INDUSTRY Co.,Ltd. Country or region before: China Patentee before: BAODING LUCKY FILM Co.,Ltd. Patentee before: Tianjin Lucky Film Co.,Ltd. |