JPH0552259B2 - - Google Patents

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Publication number
JPH0552259B2
JPH0552259B2 JP8104486A JP8104486A JPH0552259B2 JP H0552259 B2 JPH0552259 B2 JP H0552259B2 JP 8104486 A JP8104486 A JP 8104486A JP 8104486 A JP8104486 A JP 8104486A JP H0552259 B2 JPH0552259 B2 JP H0552259B2
Authority
JP
Japan
Prior art keywords
resistance
resin
thermoplastic polyester
heat
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP8104486A
Other languages
Japanese (ja)
Other versions
JPS62238736A (en
Inventor
Koichi Katayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP8104486A priority Critical patent/JPS62238736A/en
Publication of JPS62238736A publication Critical patent/JPS62238736A/en
Publication of JPH0552259B2 publication Critical patent/JPH0552259B2/ja
Granted legal-status Critical Current

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Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は耐熱性複合フイルムに関する。さらに
詳しくは耐薬品性、耐ストレスクラツク性が優れ
た耐熱性複合フイルムに関するものである。 〔従来技術〕 芳香族ポリスルホン樹脂は、耐熱性、難燃性、
剛性などの優れた樹脂でフイルムや成形品として
多方面に利用されているが、耐楽品性(特に耐フ
レオン性)が劣り、耐衝撃性も不充分でストレス
クラツクを起こしやすく応用範囲が限定されてい
る。 一方熱可塑性ポリエステル樹脂は、機械強度、
耐薬品性などが優れた樹脂で、特にポリエチレン
テレフタレート樹脂の二軸延伸フイルムは強靭で
耐熱性もある程度あり電気・電子分野を中心に広
く利用されている。しかし耐熱性は現在の水準で
はまだ不充分で大幅な向上が求められている。 一般に樹脂の耐薬品性や耐ストレスクラツク性
を向上させる方法として、耐薬品性や耐ストレス
クラツク性の優れた樹脂とのポリマーブレンド及
びガラス繊維のような繊維状強化材の配合等が知
られており芳香族ポリスルホン樹脂についても試
みられているがいずれも改良効果が不充分で芳香
族ポリスルホン樹脂の良好な耐熱性、剛性等を維
持しなおかつ耐薬品性、耐ストレスクラツク性を
充分向上させたものは得られていない。 又樹脂の耐熱性を向上させる方法として、高耐
熱樹脂や無機質強化材等の配合が有効であるが、
熱可塑性ポリエステル樹脂については充分なもの
は得られていない。 〔発明の目的〕 本発明は、耐熱性、耐薬品性、耐ストレスクラ
ツク性が優れたフイルムを得べく鋭意検討した結
果、フイルムを芳香族ポリスルホン樹脂の層と熱
可塑性ポリエステル樹脂の層から成る複合構造と
する事により、耐薬品性、耐ストルスクラツク性
の優れた耐熱性フイルムを得る事を見出し到達し
たものである。 〔発明の構成〕 本発明は、芳香族ポリスルホン樹脂の層と熱可
塑性ポリエステル樹脂の層から構成される事を特
徴とする耐熱性複合フイルムに関するものであ
る。 本発明で用いられる芳香族ポリスルホン樹脂
は、その構造単位に芳香核結合とスルホン結合を
含む熱可塑性重合体として定義され、例えば次の
構造式から成るものが挙げられる。 一方熱可塑性ポリエステル樹脂は、その構造単
位に芳香核結合とエステル結合、アルキレン鎖を
含む熱可塑性重合体として定義され、例えば次の
構造式から成るものが挙げられる。 本発明で用いられる芳香族ポリスルホン樹脂、
熱可塑性ポリエステル樹脂は、目的に応じ滑剤、
耐熱安定剤、耐候安定剤、顔料、染料等の添加剤
や難燃剤、無機質充填剤、さらに流動性改良等の
目的でポリアミド樹脂、ポリカーボネート樹脂、
ポリフエニレンスルフイド樹脂等の熱可塑性樹脂
を加えても良い。 本発明の複合フイルムの構成は限定されるもの
ではないが、代表的な構成として次の構成が挙げ
られる。 (以下芳香族ポリスルホン樹脂をPSFと、熱可
塑性ポリエステル樹脂をTPEと略記する。) (6) PSF/TPE (7) TPE/PSF/TPE (8) PSF/TPE/PSF (9) TPE/PSF/TPE/PSF/TPE より優れた物性を得る為には、両外表面を熱可
塑性ポリエステル樹脂層とするのが好ましい。又
複合フイルムにおける芳香族ポリスルホン樹脂、
熱可塑性ポリエステル樹脂各種の厚み及び厚み比
率は目的に応じ自由に選ぶ事ができる。 本発明の実施方法は、共押出法、熱圧着法、化
学接着法(接着剤、溶剤等)等通常の方法が用い
られる。なお熱可塑性ポリエステル樹脂層は非結
晶状態、結晶状態、二軸延伸状態いずれでも良い
が、より良好な物性を得るには二軸延伸状態とす
るのが好ましい。さらに各樹脂層は接着性向上の
為物理的、化学的処理等をしてもかまわない。又
本発明の複合フイルムは目的に応じハードコー
ト、バリアーコート等の表面コートやマツト処理
等の表面処理を実施しても差しつかえなく、熱可
塑性ポリエステル樹脂層を放射線照射等で架橋さ
せても良い。 〔発明の効果〕 本発明によつて得られた耐熱性複合フイルム
は、芳香族ポリスルホン樹脂の層と熱可塑性ポリ
エステル樹脂の層から成る複合構造とした事か
ら、芳香族ポリスルホン樹脂の欠点である耐薬品
性(特に耐フレオン性)、耐ストレスクラツク性
を熱可塑性ポリエステル樹脂の層が補完する形と
なり、耐熱性、耐薬品性、耐ストレスクラツク性
の優れたフイルムとなつたもので、製造方法も公
知の方法が利用でき工業上有利である。 本発明の耐熱性複合フイルムは、モータースロ
ツトライナー、トランス用絶縁フイルム等電気・
電子部品や機構部品の用途に適する。 〔実施例〕 芳香族ポリスルホン樹脂(ICI社製ポリエーテ
ルスルホン4100G)をTダイ法で押出製膜し厚さ
100μのフイルムを作製した。このフイルムに厚
さ50μの二軸延伸ポリエチレンテレフタレートフ
イルム(PETと略記する)を熱圧着し、(10)に示
す構成を有する厚さ200μの複合フイルムを得た。 (10) PET(50μ)/ポリエーテルスルホン(100μ) /PET(50μ) この複合フイルムについてフレオン(ダイキン
(株)製ダイフロン22)浸漬及び加熱条件下における
耐ストレスクラツク試験を実施した。その結果を
表−1に示す。 試験方法は、フイルムを10mmφの円筒状に固定
し各条件下に放置してクレージングやクラツクの
発生を観察するもので、条件はフレオン浸漬試験
が−41℃(液状)1時間浸漬、加熱試験が常圧空
気中175℃時間放置である。
[Industrial Field of Application] The present invention relates to a heat-resistant composite film. More specifically, the present invention relates to a heat-resistant composite film with excellent chemical resistance and stress crack resistance. [Prior art] Aromatic polysulfone resin has heat resistance, flame retardancy,
It is a resin with excellent rigidity and is used in a wide range of applications as films and molded products, but it has poor wear resistance (especially freon resistance), insufficient impact resistance, and is prone to stress cracks, limiting its range of applications. Limited. On the other hand, thermoplastic polyester resin has mechanical strength,
It is a resin with excellent chemical resistance, and biaxially stretched films made of polyethylene terephthalate resin are particularly strong and have a certain degree of heat resistance, and are widely used mainly in the electrical and electronic fields. However, the current level of heat resistance is still insufficient and significant improvement is required. In general, methods to improve the chemical resistance and stress crack resistance of resins include blending polymers with resins that have excellent chemical resistance and stress crack resistance, and adding fibrous reinforcing materials such as glass fibers. Attempts have also been made on aromatic polysulfone resins, but the improvement effects have been insufficient, and it has been difficult to maintain the good heat resistance, rigidity, etc. of aromatic polysulfone resins while sufficiently improving chemical resistance and stress crack resistance. I haven't gotten what I asked for. Also, as a method to improve the heat resistance of resins, it is effective to blend high heat resistant resins and inorganic reinforcing materials.
No satisfactory thermoplastic polyester resin has been obtained. [Object of the Invention] As a result of intensive studies to obtain a film with excellent heat resistance, chemical resistance, and stress crack resistance, the present invention has been developed to create a film consisting of a layer of aromatic polysulfone resin and a layer of thermoplastic polyester resin. We have discovered that a heat-resistant film with excellent chemical resistance and stress crack resistance can be obtained by creating a composite structure. [Structure of the Invention] The present invention relates to a heat-resistant composite film characterized by comprising a layer of aromatic polysulfone resin and a layer of thermoplastic polyester resin. The aromatic polysulfone resin used in the present invention is defined as a thermoplastic polymer containing aromatic nuclear bonds and sulfone bonds in its structural units, and includes, for example, those having the following structural formula. On the other hand, a thermoplastic polyester resin is defined as a thermoplastic polymer containing an aromatic nuclear bond, an ester bond, and an alkylene chain in its structural units, and includes, for example, those having the following structural formula. Aromatic polysulfone resin used in the present invention,
Thermoplastic polyester resin can be used as a lubricant or as a lubricant depending on the purpose.
Additives such as heat stabilizers, weather stabilizers, pigments and dyes, flame retardants, inorganic fillers, and polyamide resins, polycarbonate resins, etc. for the purpose of improving fluidity, etc.
A thermoplastic resin such as polyphenylene sulfide resin may also be added. Although the structure of the composite film of the present invention is not limited, typical structures include the following structure. (Hereinafter, aromatic polysulfone resin will be abbreviated as PSF, and thermoplastic polyester resin will be abbreviated as TPE.) (6) PSF/TPE (7) TPE/PSF/TPE (8) PSF/TPE/PSF (9) TPE/PSF/ In order to obtain better physical properties than TPE/PSF/TPE, it is preferable to form thermoplastic polyester resin layers on both outer surfaces. Also aromatic polysulfone resin in composite film,
The thickness and thickness ratio of various thermoplastic polyester resins can be freely selected depending on the purpose. The present invention can be carried out using conventional methods such as coextrusion, thermocompression bonding, and chemical bonding (adhesives, solvents, etc.). The thermoplastic polyester resin layer may be in an amorphous state, a crystalline state, or a biaxially stretched state, but it is preferably in a biaxially stretched state to obtain better physical properties. Furthermore, each resin layer may be subjected to physical or chemical treatment to improve adhesion. Furthermore, depending on the purpose, the composite film of the present invention may be subjected to surface coating such as hard coating or barrier coating, or surface treatment such as matte treatment, and the thermoplastic polyester resin layer may be crosslinked by radiation irradiation, etc. . [Effects of the Invention] Since the heat-resistant composite film obtained by the present invention has a composite structure consisting of a layer of aromatic polysulfone resin and a layer of thermoplastic polyester resin, it does not have resistance, which is a drawback of aromatic polysulfone resin. The thermoplastic polyester resin layer complements chemical resistance (especially freon resistance) and stress crack resistance, resulting in a film with excellent heat resistance, chemical resistance, and stress crack resistance. Known methods can be used and are industrially advantageous. The heat-resistant composite film of the present invention can be used in electrical applications such as motor slot liners and insulating films for transformers.
Suitable for use in electronic parts and mechanical parts. [Example] Aromatic polysulfone resin (polyethersulfone 4100G manufactured by ICI) was extruded into a film using the T-die method, and the thickness was
A 100μ film was produced. A biaxially stretched polyethylene terephthalate film (abbreviated as PET) with a thickness of 50 μm was thermocompression bonded to this film to obtain a composite film with a thickness of 200 μm having the structure shown in (10). (10) PET (50μ) / Polyethersulfone (100μ) / PET (50μ) About this composite film Freon (Daikin
Daiflon Co., Ltd. 22) A stress crack resistance test was conducted under immersion and heating conditions. The results are shown in Table-1. The test method is to fix the film in a cylindrical shape with a diameter of 10 mm, leave it under various conditions, and observe the occurrence of crazing or cracking. It was left at 175℃ in normal pressure air for an hour.

【表】 この複合フイルムは試験後も含め層間はく離、
形状・外観変化等はなかつた。
[Table] This composite film showed no interlayer peeling even after the test.
There was no change in shape or appearance.

Claims (1)

【特許請求の範囲】[Claims] 1 芳香族ポリスルホン樹脂の層と熱可塑性ポリ
エステル樹脂の層から構成される事を特徴とする
耐熱性複合フイルム。
1. A heat-resistant composite film comprising a layer of aromatic polysulfone resin and a layer of thermoplastic polyester resin.
JP8104486A 1986-04-10 1986-04-10 Heat-resistant composite film Granted JPS62238736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8104486A JPS62238736A (en) 1986-04-10 1986-04-10 Heat-resistant composite film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8104486A JPS62238736A (en) 1986-04-10 1986-04-10 Heat-resistant composite film

Publications (2)

Publication Number Publication Date
JPS62238736A JPS62238736A (en) 1987-10-19
JPH0552259B2 true JPH0552259B2 (en) 1993-08-04

Family

ID=13735433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8104486A Granted JPS62238736A (en) 1986-04-10 1986-04-10 Heat-resistant composite film

Country Status (1)

Country Link
JP (1) JPS62238736A (en)

Also Published As

Publication number Publication date
JPS62238736A (en) 1987-10-19

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