TW202136398A - 積層薄膜 - Google Patents
積層薄膜 Download PDFInfo
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- TW202136398A TW202136398A TW109145258A TW109145258A TW202136398A TW 202136398 A TW202136398 A TW 202136398A TW 109145258 A TW109145258 A TW 109145258A TW 109145258 A TW109145258 A TW 109145258A TW 202136398 A TW202136398 A TW 202136398A
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- film
- coating layer
- laminated film
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- 239000002245 particle Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
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- 238000010030 laminating Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 69
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 64
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 36
- 239000000377 silicon dioxide Substances 0.000 description 26
- 238000000576 coating method Methods 0.000 description 23
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- 238000006243 chemical reaction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 14
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- NZZFYRREKKOMAT-UHFFFAOYSA-N diiodomethane Chemical compound ICI NZZFYRREKKOMAT-UHFFFAOYSA-N 0.000 description 7
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- 230000000052 comparative effect Effects 0.000 description 6
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 6
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- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 4
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- 238000004458 analytical method Methods 0.000 description 4
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- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 3
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
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- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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- 239000006096 absorbing agent Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
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- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
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- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 2
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- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- KJFMBFZCATUALV-UHFFFAOYSA-N phenolphthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2C(=O)O1 KJFMBFZCATUALV-UHFFFAOYSA-N 0.000 description 2
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- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
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- 229920000305 Nylon 6,10 Polymers 0.000 description 1
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- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229920002319 Poly(methyl acrylate) Polymers 0.000 description 1
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- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000000304 alkynyl group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
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- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
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- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical group C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
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- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
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- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
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- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
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- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- YLLIGHVCTUPGEH-UHFFFAOYSA-M potassium;ethanol;hydroxide Chemical compound [OH-].[K+].CCO YLLIGHVCTUPGEH-UHFFFAOYSA-M 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
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- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
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- 238000004804 winding Methods 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D123/10—Homopolymers or copolymers of propene
- C09D123/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
- C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/06—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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Abstract
課題在於提供一種顯示優異的撥水•撥油性,且基材薄膜與塗布層的接著性為良好的積層薄膜。
解決手段為一種積層薄膜,其係在基材薄膜上積層至少1層塗布層的積層薄膜,前述塗布層包含酸改質聚烯烴與疏水性氧化物粒子而成,前述酸改質聚烯烴的酸值為1mgKOH/g以上60mgKOH/g以下。較佳為相對於前述塗布層表面的水之接觸角為100度以上的積層薄膜。
Description
本發明係關於積層薄膜。更詳細而言係關於具有撥水•撥油性的塗布積層薄膜。
表面顯示撥水•撥油性的材料,在需要防汙性的領域中在工業上是重要的。為了達成防汙性,必須使汙染物質與材料表面的相互作用降低,通常,一般是藉由進行材料表面的撥水化、撥油化而達成。
以往,就用以展現撥水性的撥水處理方法而言,已知:對薄膜表面賦予表面能量比水低的氟系樹脂或矽系樹脂等的方法、還有在薄膜表面形成微細的凹凸的方法等(例如,參照專利文獻1~4)。
然而,一般而言,用以對薄膜表面賦予撥水性的塗布方法,有與基材的接著性低、塗布層容易脫落這樣的問題。又,一般而言,即便可形成具有顯示撥水且撥油性的表面之薄膜亦難以保持薄膜的透明性等,作為薄膜材料的特性未必充分。
[先前技術文獻]
[專利文獻]
專利文獻1:日本特開2000-284102號公報
專利文獻2:日本特開2002-113805號公報
專利文獻3:日本特開2018-103534號公報
專利文獻4:日本特開2007-138027號公報
[發明欲解決之課題]
本發明係以該以往技術的課題為背景。即,本發明的目的在於提供一種顯示優異的撥水•撥油性,且基材薄膜與塗布層的接著性為良好的積層薄膜。
本發明人等仔細檢討的結果,發現藉由以下所示的手段,可解決上述課題,而完成本發明。即,本發明包含以下的構成。
1.一種積層薄膜,其係在基材薄膜上積層至少1層塗布層的積層薄膜,前述塗布層包含酸改質聚烯烴與疏水性氧化物粒子而成,前述酸改質聚烯烴的酸值為1mgKOH/g以上60mgKOH/g以下。
2.如上述第1點所記載之積層薄膜,其中前述疏水性氧化物粒子的1次粒子平均直徑為5nm~300nm。
3.如上述第1或第2點所記載之積層薄膜,其中相對於前述塗布層的固體成分而言之疏水性氧化物粒子的固體成分含量為10~90質量%。
4.如上述第1至第3點中任一點所記載之積層薄膜,其中前述酸改質聚烯烴為酸改質聚丙烯。
5.如上述第1至第4點中任一點所記載之積層薄膜,其中相對於前述塗布層表面的水之接觸角為100度以上。
6.如上述第1至第5點中任一點所記載之積層薄膜,其中基材薄膜為聚對苯二甲酸乙二酯薄膜、聚萘二甲酸乙二酯薄膜、或聚醯亞胺薄膜。
[發明之效果]
本發明的積層薄膜至少具備基材層與塗布層,藉由在前述塗布層中包含酸改質聚烯烴,而與基材薄膜的接著性為良好。又,藉由使塗布層包含疏水性氧化物粒子、或具有特定低酸值的酸改質聚烯烴,積層薄膜的塗布層表面之撥水•撥油性為良好。
[用以實施發明的形態]
以下詳述本發明。本發明係提供一種顯示優異的防汙性且具有有用的撥水•撥油性的積層薄膜。即,可提供一種積層薄膜,其係在基材薄膜上積層塗布層的積層薄膜,藉由前述塗布層為包含酸值為1mgKOH/g以上60mgKOH/g以下的酸改質聚烯烴與疏水性氧化物粒子的塗布層,而在薄膜最外表面顯示優異的撥水性及撥油性,且亦能與基材薄膜牢固地接著,還具有高透明性。
(基材薄膜)
本發明中之積層薄膜具有基材薄膜。此基材薄膜的材質未特別限定,但從可撓性等處理性的觀點來看,較佳為樹脂薄膜。就構成樹脂薄膜的樹脂而言,可列舉例如聚乙烯、聚丙烯、聚苯乙烯或二烯系聚合物等的聚烯烴類、聚對苯二甲酸乙二酯、聚對苯二甲酸丙二酯、聚對苯二甲酸丁二酯、聚萘二甲酸乙二酯等的聚酯類、尼龍6、尼龍6,6、尼龍6,10、尼龍12等的聚醯胺類、聚甲基丙烯酸甲酯、聚甲基丙烯酸酯類、聚丙烯酸甲酯、聚丙烯酸酯類等的丙烯酸酯系樹脂、聚丙烯酸系樹脂、聚甲基丙烯酸系樹脂、聚胺基甲酸酯系樹脂、乙酸纖維素、乙基纖維素等的纖維素系樹脂、聚芳酯、聚芳醯胺、聚碳酸酯、聚伸苯硫醚、聚伸苯醚、聚碸、聚醚碸、聚醚醚酮、聚醚醯亞胺、聚醯亞胺、聚醯胺醯亞胺、聚苯并咪唑、聚苯并唑、聚苯并噻唑等的芳香族系烴系聚合物、聚四氟乙烯、聚偏二氟乙烯等的氟系樹脂、環氧樹脂、酚樹脂、酚醛清漆樹脂、苯并𠯤樹脂等。此等之中,從透明性與尺寸安定性的觀點來看,較佳為由聚酯樹脂、丙烯酸酯樹脂而成的薄膜。就聚酯樹脂而言,具體來說,可列舉聚對苯二甲酸乙二酯、聚對苯二甲酸丙二酯、聚對苯二甲酸丁二酯、聚萘二甲酸乙二酯等。此等之中,從物性的觀點來看,較佳為聚對苯二甲酸乙二酯、聚萘二甲酸乙二酯及聚醯亞胺,從物性與成本的平衡這樣的觀點來看,特佳為聚對苯二甲酸乙二酯。
基材薄膜可為單層,亦可基層二種以上的層。積層二種以上的層時,可積層同種或不同種的薄膜。又,亦可使樹脂組成物積層於基材薄膜。再者,只要在發揮本發明的效果之範圍內,則可因應需要使基材薄膜中含有各種添加劑。就添加劑而言,可列舉例如抗氧化劑、耐光劑、抗凝膠化劑、有機濕潤劑、抗靜電劑、紫外線吸收劑、界面活性劑等。基材薄膜由二種以上的層所構成時,可因應各層的功能含有添加物。為了使基材薄膜的滑動性、捲繞性等的處理性提升,亦可使基材薄膜中含有惰性粒子。
本發明中,基材薄膜的厚度未特別限定,但較佳為5μm以上300μm以下。更佳為10μm以上280μm以下,進一步較佳12μm以上260μm以下。若為5μm以上則在塗布層的積層時容易塗布,若為300μm以下則在成本方面有利。
基材薄膜的表面可以未處理的狀態使用,但為了使與塗布層的接著性提升,亦可為施有表面處理者。具體來說,可使用設置錨塗層、或進行電漿處理、電暈處理、火焰處理等的表面處理者。
(疏水性氧化物粒子)
本發明中之積層薄膜的塗布層含有疏水性氧化物粒子。此疏水性氧化物粒子只要為具有疏水性者則未特別限定,可為例如藉由表面處理將親水性氧化物粒子進行疏水化者。即,可使用對於親水性氧化物粒子以矽烷偶合劑等的任意試劑進行表面處理,將其表面進行疏水化者。
氧化物的種類未特別限定。可使用例如矽石(二氧化矽)、氧化鋁、氧化鈦、氧化鋯等的至少1種。此等可為經由任意化合物所合成者,亦可使用周知或市售者。尤其矽石(二氧化矽)的粒子係後述的疏水化為容易而為較佳。
以矽石粒子為代表之氧化物粒子的疏水化方法,適合使用利用矽油、矽烷偶合劑及矽氮烷等周知的各種試劑之表面處理。尤其,從顯示優異的撥水•撥油性這樣的觀點來看,更佳為在表面導入以1H,1H,2H,2H-全氟辛基、1H,1H,2H,2H-全氟癸基、1H,1H,2H,2H-全氟己基、3,3,3-三氟丙基等為代表之氟系官能基、以甲基、乙基、正丙基、異丙基、正丁基、異丁基、第二丁基、第三丁基、辛基等為代表之烷基、或烯基、炔基、乙烯基、環己基、苯乙烯基、苯基、三甲基矽基等。其中,基於顯示更優異的撥水•撥油性,較佳為導入有三甲基矽基的疏水性氧化物粒子,特佳為導入有三甲基矽基的疏水性矽石。就對應於此的市售品而言,可列舉前述「AEROSIL(註冊商標) R812」、「AEROSIL(註冊商標) R812S」(皆為Evonik Degussa公司製)等。
本發明中之疏水性氧化物粒子的大小,一次粒子平均直徑較佳為5nm以上300nm以下,更佳為5nm以上200nm以下,進一步較佳為5nm以上150nm以下,特佳為5nm以上100nm以下,最佳為5nmm以上75nm以下。藉由將一次粒子平均直徑設為上述範圍,即便在基材薄膜積層塗布層時亦可保持作為積層薄膜的透明性而為較佳。又,本發明中亦可將粒徑不同的複數種疏水性氧化物粒子混合而使用。此外,本發明中,一次粒子平均直徑的大小可使用掃描型電子顯微鏡、穿透型電子顯微鏡等由顯微鏡之形態觀察的結果來決定。具體來說,在此等的顯微鏡觀察中將任意選擇的20個粒子之直徑的平均當作一次粒子平均直徑。不定形的粒子的一次粒子平均直徑可以圓等效直徑的方式計算。圓等效直徑係將所觀察之粒子的面積除以π,算出平方根並乘以2倍而得的值。
本發明中,作為具有疏水性氧化物粒子表面之撥水•撥油性的官能基之修飾率的指標,可利用X線光電子分光裝置(ESCA)之測定結果。具體來說,可針對10nm左右的深度區域求出原子組成比率,且針對構成具有撥水•撥油性的官能基之特定原子,例如碳原子的比率進行比較。本發明中,從顯示優異的撥水•撥油性這樣的觀點來看,較佳為例如在導入有三甲基矽基的疏水性矽石的情況下,碳原子的比率為8at%以上。
(酸改質聚烯烴)
本發明中之酸改質聚烯烴未特別限定,作為前驅物的聚烯烴,較佳可列舉LDPE(低密度聚乙烯)、HDPE(高密度聚乙烯)、LDPE(低密度聚乙烯)等的聚乙烯、聚丙烯、丙烯•乙烯嵌段共聚物、丙烯•α-烯烴嵌段共聚物等。
可列舉如前述之聚烯烴的至少一部分為聚烯烴、不飽和羧酸改質聚烯烴者,較佳為酸改質聚丙烯、酸改質聚乙烯,進一步較佳為不飽和羧酸改質聚丙烯、不飽和羧酸改質聚乙烯。不飽和羧酸改質聚烯烴係使聚烯烴與不飽和羧酸進行接枝反應而使聚烯烴進行改質者,可列舉例如馬來酸酐改質聚丙烯、馬來酸酐改質聚乙烯等。就不飽和羧酸而言,可列舉例如馬來酸、富馬酸、丙烯酸、甲基丙烯酸、此等的酸酐等,其中較佳為馬來酸酐、馬來酸。酸改質聚烯烴的酸值較佳為1mgKOH/g以上60mgKOH/g以下,更佳為1mgKOH/g以上35mgKOH/g以下,進一步較佳為1mgKOH/g以上25mgKOH/g以下,特佳為1mgKOH/g以上20mgKOH/g以下。藉由使用滿足前述酸值的酸改質聚烯烴,可維持對基材薄膜的塗布性,同時確保適當的疏水性。
(塗布層中的成分)
本發明中之塗布層中,可包含上述疏水性氧化物粒子以外的成分。具體來說,可列舉黏結劑成分、抗氧化劑、耐光劑、抗凝膠化劑、有機濕潤劑、抗靜電劑、紫外線吸收劑、界面活性劑等,可因應需要適當含有此等成分。
黏結劑成分只要為可與基材薄膜良好地接著的成分,則未特別限定。較佳為使用例如聚酯樹脂、聚丙烯樹脂、聚胺基甲酸酯樹脂、環氧樹脂、丙烯酸樹脂等。當然,包含酸改質聚烯烴作為黏結劑成分的1種為特佳的態樣。
塗布層中的疏水性氧化物粒子,能夠以可展現積層薄膜的撥水•撥油性的任意比例使用,但較佳為就固體成分而言設為塗布層的10~90質量%。進一步較佳為20~80質量%,特佳為30~70質量%。藉由以前述比例使用疏水性氧化物粒子,在積層薄膜中可展現優異的撥水•撥油性。
(塗布液)
本發明中,藉由直接或隔著其他層將塗布層積層在基材薄膜上,而得到積層薄膜。用以形成此塗布層的塗布液,在疏水性氧化物粒子的分散液包含酸改質聚烯烴的情況下,可就這樣直接使用,但亦可包含單獨或複數種其他黏結劑成分等形成前述塗布層的各種成分、或適當的溶媒。
(積層薄膜的製造步驟)
本發明的積層薄膜的製造中,塗布的方法未特別限制。可依照例如輥塗布、凹版塗布、棒塗、刮刀塗布、旋轉塗布、噴塗、刷毛塗布等周知的方法進行製作。以此等的方法進行塗布之際所使用的溶媒未特別限定,可適當選擇例如水、醇類、酮類、正己烷、環己烷、甲苯、乙酸丁酯、二醇類等有機溶媒而使用。此等溶媒可單獨使用,亦可混合複數而使用。疏水性氧化物粒子對於溶媒的分散量,能夠以可得到均勻的分散液的任意比例來選擇。在塗布後進行乾燥的方法,可為自然乾燥或加熱乾燥之任一者,但從工業上的製造這樣的觀點來看,更佳為加熱乾燥。乾燥溫度只要為不對基材薄膜、塗布層的含有成分造成影響的範圍則未特別限定,但通常較佳為200℃以下,更佳為50℃以上160℃以下。乾燥方法未特別限定,可使用熱板、熱風烘箱等使薄膜乾燥之周知的方法。關於乾燥時間,係依據乾燥溫度等其他條件適當選擇,但只要為不對基材薄膜、塗布層的含有成分造成影響的範圍即可。
(撥水•撥油性)
本發明之積層薄膜的撥水•撥油性可以周知的方法進行評價。具體來說,撥水性可藉由使用水的接觸角測定而進行評價,又,撥油性可藉由使用二碘甲烷的接觸角測定而進行評價。本發明中較佳的相對於水之接觸角的範圍為100度以上,更佳為120度以上。若水的接觸角為100度以上則顯示優異的撥水性,因而較佳,若為120度以上,則顯示與以聚四氟乙烯(PTFE)為代表之以往的氟系樹脂薄片同等以上的撥水性,因而更佳。相對於水之接觸角的上限係與下述相對於二碘甲烷之接觸角有關聯,但較佳為180度以下。又,本發明中較佳的二碘甲烷的接觸角的範圍為60度以上,更佳為90度以上。若二碘甲烷的接觸角為60度以上,則從能賦予可抑制油汙等的撥油性的觀點來看為較佳,若為90度以上,則顯示與以往的氟系樹脂薄片同等以上的撥油性,因而更佳。上限係與相對於水之接觸角的程度有關聯,但較佳為180度以下。
[實施例]
以下,列舉具體的實施例進一步說明本發明,但本發明不受此等實施例的態樣限定。首先,說明本發明中採用的評價方法。
(接觸角測定)
針對所製作的積層薄膜的塗布層表面,測定相對於溶劑之接觸角。接觸角測定中,使用協和界面科學股份有限公司製的全自動接觸角計DM-701。測定溶劑係使用純水與二碘甲烷。水的接觸角(以下有時省略為WCA)係滴下1.8μL的水滴,在60秒後進行測定。二碘甲烷的接觸角(以下有時省略為DCA)係滴下0.9μL的二碘甲烷的液滴,在30秒後進行測定。
(接著性測定)
薄膜與塗布層的接著性係藉由測定剝離強度來確認。剝離強度係使用Japan Instrumentation System Co., Ltd.的JSV-H1000進行測定(單位:N/cm)。此外,本發明的實施例中,將2N/cm以上當作合格。
(一次粒子平均直徑的測定)
疏水性氧化物粒子的一次粒子平均直徑係由掃描型電子顯微鏡或穿透型電子顯微鏡之觀察的結果來決定。具體來說,在此等的顯微鏡觀察中將任意選擇的20個粒子之直徑的平均當作一次粒子平均直徑。不定形的粒子的一次粒子平均直徑可以圓等效直徑的方式計算。圓等效直徑係將所觀察之粒子的面積除以π,算出平方根並乘以2倍而得的值。
(酸值的測定方法)
本發明之酸值(mgKOH/g-resin)係中和1g的酸改質聚烯烴所需要的KOH量,依據JIS K0070(1992)的試驗方法進行測定。具體來說,使1g的酸改質聚烯烴溶解於100g的經溫度調整至100℃的二甲苯後,在相同溫度下將酚酞作為指示劑,以0.1mol/L氫氧化鉀乙醇溶液[商品名稱「0.1mol/L乙醇性氫氧化鉀溶液」,和光純藥(股)製]進行滴定。此時,將滴定所需要的氫氧化鉀量換算成mg而算出酸值(mgKOH/g)。
(疏水性氧化物粒子的ESCA測定)
將疏水性氧化物粒子分散液滴下至潔淨的鋁箔上,使其乾燥,在鋁箔上形成疏水性氧化物粒子薄膜。此時,以儘可能不產生表面汙染的方式迅速使其乾燥,立刻進行取樣而供給至表面組成分析。
裝置係使用K-Alpha+
(Thermo Fisher Scientific公司製)。測定條件的細節係顯示如下。此外,解析時,背景值的去除係以shirley法進行。又,表面組成比係設為3處以上未檢測出基材的Al的部位之測定結果的平均值。
•測定條件
激發X線:單色化AlKα線
X線輸出:12kV,6mA
光電子脫離角度:90度
光點大小:400μmΦ
通過能量:50eV
間距(step):0.1eV
<馬來酸酐改質聚丙烯A-1的製造例>
製造例1
在1L的高壓釜中添加100質量份的聚丙烯、150質量份的甲苯及3質量份的馬來酸酐、1質量份的過氧化二第三丁基,升溫至140℃後,進一步攪拌1小時。反應結束後,將反應液投入大量的甲基乙基酮中,使樹脂析出。將此樹脂進一步以甲基乙基酮清洗數次,去除未反應的馬來酸酐。藉由將所得到之樹脂進行減壓乾燥,得到酸改質聚烯烴之馬來酸酐改質聚丙烯(酸值6mgKOH/g,重量平均分子量60,000,Tm80℃)。
<馬來酸酐改質聚丙烯B-1的製造例>
在1L的高壓釜中添加100質量份的聚丙烯、150質量份的甲苯及8.5質量份的馬來酸酐、4質量份的過氧化二第三丁基,升溫至140℃後,進一步攪拌1小時。反應結束後,將反應液投入大量的甲基乙基酮中,使樹脂析出。將此樹脂進一步以甲基乙基酮清洗數次,去除未反應的馬來酸酐。藉由將所得到之樹脂進行減壓乾燥,得到酸改質聚烯烴之馬來酸酐改質聚丙烯(酸值12.7mgKOH/g,重量平均分子量60,000,Tm80℃)。
<馬來酸酐改質聚丙烯C-1的製造例>
在1L的高壓釜中添加100質量份的聚丙烯、150質量份的甲苯及22質量份的馬來酸酐、4質量份的過氧化二第三丁基,升溫至140℃後,進一步攪拌1小時。反應結束後,將反應液投入大量的甲基乙基酮中,使樹脂析出。將此樹脂進一步以甲基乙基酮清洗數次,去除未反應的馬來酸酐。藉由將所得到之樹脂進行減壓乾燥,得到酸改質聚烯烴之馬來酸酐改質聚丙烯(酸值22.9mgKOH/g,重量平均分子量60,000,Tm80℃)。
<馬來酸酐改質聚丙烯溶液A-2、B-2、C-2的製造例>
在反應容器中量取25g的馬來酸酐改質聚丙烯A-1,於其中添加475g的環己烷與甲基乙基酮的混合溶媒(混合質量比=9:1),攪拌1小時以上,藉此得到固體成分濃度為5質量%的馬來酸酐改質聚丙烯溶液A-2。同樣地,針對馬來酸酐改質聚丙烯B-1、C-1,亦同樣地進行而製作固體成分濃度為5質量%的溶液,分別作為馬來酸酐改質聚丙烯溶液B-2、C-2。
<矽石粒子分散液D的製造例>
作為疏水性矽石,使用表面具有三甲基矽基之市售的AEROSIL(註冊商標)R812S(Evonik公司製,一次粒子平均直徑7nm)。在反應容器中量取25g的R812S,於其中添加475g的環己烷與甲基乙基酮的混合溶媒(混合質量比=9:1),攪拌12小時以上。之後藉由使用超音波均質機10分鐘,得到固體成分濃度為5質量%的矽石粒子分散液D。
<矽石粒子分散液E的製造例>
作為疏水性矽石,使用以二甲基二氯矽烷改質之市售的矽石粒子AEROSIL(註冊商標)R972(Evonik公司製,一次粒子平均直徑60nm)。在反應容器中量取25g的R972,於其中添加475g的環己烷與甲基乙基酮的混合溶媒(混合質量比=9:1),攪拌12小時以上。之後藉由使用超音波均質機10分鐘,得到固體成分濃度為5質量%的矽石粒子分散液E。
<矽石粒子分散液F的製造例>
在反應容器1中混合100質量份的四乙氧基矽烷及339質量份的乙醇。在反應容器2中混合179質量份的乙醇、14質量份的氨水(25%)、125質量份的去離子水後,將反應容器2的內容物滴下而移動至反應容器1。此時,為了防止激烈的反應,花費10分鐘滴下。滴下結束後,將反應溶液在20℃下放置48小時。之後,以蒸餾將氨與水餾去,製作矽石粒子分散液(平均一次粒子直徑260nm)。之後,添加150質量份的六甲基二矽氮烷,在65℃加熱2天,藉此製作以三甲基矽基修飾之矽石微粒子分散液。為了確認矽石微粒子分散液的固體成分濃度,在鋁杯(1.3克)中量取5克的矽石微粒子分散液,藉由在150℃的烘箱中加熱24小時以上而去除殘留溶媒的乙醇與水。計量去除後的鋁杯為1.55克,因此可計算矽石微粒子分散液5克中的固體成分為0.25克,確認矽石微粒子分散液的固體成分濃度為5質量%。之後,為了製作塗布液,將矽石微粒子分散液的乙醇去除,追加與所去除的乙醇為等量之環己烷與甲基乙基酮的混合溶媒(混合質量比=9:1),得到以環己烷/甲基乙基酮=9/1為溶劑之固體成分濃度為5質量%的矽石粒子分散液F。
<塗布液的製造例>
在反應容器中添加40質量份的馬來酸酐改質聚丙烯溶液A-2、40質量份的矽石粒子分散液E、20質量份的環己烷與甲基乙基酮的混合溶媒(混合質量比=9:1),在室溫攪拌1小時,藉此製作塗布液。
<塗布薄膜的製作>
(實施例1)
使用棒塗機#3,以棒塗方式將前述塗布液塗布在聚對苯二甲酸乙二酯(以下有時記載為PET薄膜)製的薄膜亦即TOYOBO ESTER(註冊商標)Film(型號:E5100,厚度:75μm)的電暈處理面後,在120℃使其乾燥1分鐘,藉此得到塗布薄膜。
<實施例2~12>
以下,如表1般變更塗布液中之酸改質聚丙烯溶液的種類與摻合量、矽石粒子分散液的種類與摻合量,藉此得到實施例2~12的塗布薄膜。
[表1]
酸改質PP與矽石粒子的含有率係記載塗布液中之各個固體成分質量%。
酸改質 PP溶液 | 酸改質 PP酸值(mgKOH/g) | 酸改質PP (質量%) | 矽石粒子 分散液 | 矽石粒子 粒徑(nm) | 矽石粒子 (質量%) | WCA (度) | DCA (度) | PET薄膜與塗布層的 剝離強度(N/cm) | |
實施例1 | A-2 | 6.0 | 2.0 | D | 7 | 2.0 | 151.7 | 105.3 | 2.2 |
實施例2 | A-2 | 6.0 | 1.0 | D | 7 | 1.0 | 153.7 | 92.0 | 2.8 |
實施例3 | A-2 | 6.0 | 1.0 | D | 7 | 2.0 | 151.6 | 107.0 | 2.3 |
實施例4 | A-2 | 6.0 | 0.5 | D | 7 | 0.5 | 150.6 | 101.3 | 3.2 |
實施例5 | A-2 | 6.0 | 0.2 | D | 7 | 0.2 | 153.5 | 101.2 | 3.4 |
實施例6 | A-2 | 6.0 | 0.2 | D | 7 | 0.1 | 152.6 | 101.4 | 3.7 |
實施例7 | B-2 | 12.7 | 2.0 | D | 7 | 2.0 | 151.3 | 79.3 | 3.4 |
實施例8 | B-2 | 12.7 | 1.0 | D | 7 | 2.0 | 151.7 | 120.1 | 2.5 |
實施例9 | C-2 | 22.9 | 2.0 | D | 7 | 2.0 | 150.8 | 103.6 | 5.2 |
實施例10 | C-2 | 22.9 | 1.0 | D | 7 | 2.0 | 151.7 | 120.2 | 2.5 |
實施例11 | A-2 | 6.0 | 2.0 | E | 60 | 2.0 | 133.4 | 94.6 | 3.1 |
實施例12 | A-2 | 6.0 | 2.0 | F | 260 | 2.0 | 120.5 | 90.2 | 2.7 |
(比較例1)
使用棒塗機#3將馬來酸酐改質聚丙烯溶液A-2(固體成分5質量%)塗布在PET薄膜E5100的電暈處理面後,在120℃使其乾燥1分鐘,藉此得到塗布薄膜。
(比較例2)
除了將實施例1中之馬來酸酐改質聚丙烯溶液A-2變更為同濃度的無改質聚丙烯系溶液,且未摻合矽石微粒子分散液之外,與實施例1同樣地進行而得到塗布薄膜。將比較例1、2的評價結果記載於表2。
[表2]
酸改質PP與矽石粒子的含有率係記載塗布液中之各個固體成分質量%。
比較例2並非酸改質PP溶液,而為無改質PP溶液。
酸改質 PP溶液 | 酸改質PP酸值(mgKOH/g) | 酸改質PP (質量%) | 矽石粒子 (質量%) | WCA (度) | DCA (度) | PET薄膜與塗布層的 剝離強度(N/cm) | |
比較例1 | A-2 | 6.0 | 5 | 0 | 99.6 | 53.7 | 5以上 |
比較例2 | 無改質PP溶液 | 0 | 5 | 0 | 105.3 | 57.9 | 0.5 |
此處,將以ESCA分析上述矽石粒子分散液D~F所含之矽石粒子表面的結果示於表3。
[表3]
(單位:at%)
[產業上利用之可能性]
粒子分散液 | 粒子表面的ESCA分析結果 | |||||
Si | C | O | N | Al | Cl | |
D(R812S) | 33.0 | 8.4 | 58.6 | <0.1 | <0.1 | <0.1 |
E(R972) | 31.3 | 8.5 | 60.6 | <0.1 | <0.1 | 0.2 |
F | 30.1 | 14.2 | 55.7 | <0.1 | <0.1 | <0.1 |
根據本發明,可提供一種具有優異的撥水•撥油性,且顯示防汙性的積層薄膜。本發明之積層薄膜可期待在包裝、被覆、離型原料等用途的應用,因此為有用。
無。
無。
無。
Claims (6)
- 一種積層薄膜,其係在基材薄膜上積層至少1層塗布層的積層薄膜,該塗布層包含酸改質聚烯烴與疏水性氧化物粒子而成,該酸改質聚烯烴的酸值為1.0mgKOH/g以上60mgKOH/g以下。
- 如請求項1之積層薄膜,其中該疏水性氧化物粒子的1次粒子平均直徑為5nm~300nm。
- 如請求項1或2之積層薄膜,其中相對於該塗布層的固體成分而言之疏水性氧化物的固體成分含量為10~90質量%。
- 如請求項1至3中任一項之積層薄膜,其中該酸改質聚烯烴為酸改質聚丙烯。
- 如請求項1至4中任一項之積層薄膜,其中相對於該塗布層表面的水之接觸角為100度以上。
- 如請求項1至5中任一項之積層薄膜,其中基材薄膜為聚對苯二甲酸乙二酯薄膜、聚萘二甲酸乙二酯薄膜、或聚醯亞胺薄膜。
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