JPH0217341B2 - - Google Patents

Info

Publication number
JPH0217341B2
JPH0217341B2 JP10226685A JP10226685A JPH0217341B2 JP H0217341 B2 JPH0217341 B2 JP H0217341B2 JP 10226685 A JP10226685 A JP 10226685A JP 10226685 A JP10226685 A JP 10226685A JP H0217341 B2 JPH0217341 B2 JP H0217341B2
Authority
JP
Japan
Prior art keywords
fluoroolefin
heat
copolymer
weight
parts
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
Application number
JP10226685A
Other languages
English (en)
Other versions
JPS61258727A (ja
Inventor
Keiji Ueno
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 Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP10226685A priority Critical patent/JPS61258727A/ja
Priority to EP86106548A priority patent/EP0203457B1/en
Priority to DE8686106548T priority patent/DE3673066D1/de
Publication of JPS61258727A publication Critical patent/JPS61258727A/ja
Priority to US07/188,724 priority patent/US4960624A/en
Publication of JPH0217341B2 publication Critical patent/JPH0217341B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
    • H01B3/445Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C61/00Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
    • B29C61/003Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F259/00Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
    • C08F259/08Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/18Homopolymers or copolymers or tetrafluoroethene
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/441Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18PTFE, i.e. polytetrafluoroethylene, e.g. ePTFE, i.e. expanded polytetrafluoroethylene
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/30Nc systems
    • G05B2219/49Nc machine tool, till multiple
    • G05B2219/49293Switch between dual, double slide or double spindle mode

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Description

【発明の詳細な説明】
〔産業上の利用分野〕 本発明は二種以上のフツ素樹脂を混合したフツ
素エラストマー熱収縮チユーブの低温性を改善す
ることを目的とする。 〔従来の技術〕 フツ素エラストマーは、優れた耐熱性、耐油
性、耐薬品性を活かして、ガスケツト、パツキン
グ、ホース等の用途に使用されている。かかる特
性から端末保護用熱収縮チユーブなどの電気絶縁
材料としての要求も高い。しかし、従来から用い
られているフツ素エラストマーでは、電気絶縁特
性や機械的強度に劣るといつた種々の欠点があ
り、改善が望まれていた。近年、特に電気絶縁特
性に優れたフツ素エラストマーとして、テトラフ
ルオロエチレン−プロピレン系共重合体が開発さ
れた。テトラフルオロエチレン−プロピレン系共
重合体としては、主成分のテトラフルオロエチレ
ンとプロピレンに加え、これらのものと共重合可
能な成分、例えばエチレン、イソブチレン、アク
リル酸及びそのアルキルエステル、メタクリル酸
およびそのアルキルエステル、フツ化ビニル、フ
ツ化ビニリデン、ヘキサフルオロプロペン、クロ
ロエチルビニルエーテル、クロロトリフルオロエ
チレン、パーフルオロアルキルビニルエーテル等
を適当量含有したものでも良い。所がかかる共重
合体を絶縁体として電線熱収縮チユーブ等に使用
する場合、機械的強度が低く、そのままでは使用
出来ないものであつた。且つ熱収縮チユーブとし
てヒートセツト性(チユーブを膨張させそのまま
の形状を保持させる)を付与する為に、結晶性ポ
リマーを添加する必要があり、結晶性フツ素樹脂
として、エチレン−テトラフルオロエチレン共重
合体、テトラフルオロエチレン−ヘキサフルオロ
プロピレン共重合体、ポリフツ化ビニリデン、フ
ツ化ビニリデン−フルオロオレフイン共重合体等
を用い該フツ素エラストマーとのブレンドを検討
した。 〔発明が解決しようとする問題点〕 しかるに、これらのフツ素樹脂とのブレンドに
より機械的強度の改善は計れるものの、低温性が
悪化し、通常の絶縁用熱収縮チユーブとして要求
される−10℃の低温試験にも合格せず、使用出来
ないものであつた。本発明は、この低温性を改善
すべく鋭意検討した結果、到達したものである。 〔問題点を解決するための手段〕 本発明は、テトラフルオロエチレン−プロピレ
ン系共重合体100重量部にフツ化ビニリデン−フ
ルオロオレフイン共重合体を10重量部以上100重
量部未満と架橋促進剤を配合し電子線照射により
架橋せしめた組成物を用いたことを特徴とするフ
ツ素エラストマー熱収縮チユーブである。本発明
において用いられるフツ化ビニリデン−フルオロ
オレフイン共重合体は、フルオロオレフインが1
〜20モル%のものである。この様なフルオロフレ
フインとしては六フツ化プロピレン又は四フツ化
エチレンが加工性等の点で好ましい。フツ化ビニ
リデン−フルオロオレフイン共重合体がテトラフ
ルオロエチレン−プロピレン共重合体100重量部
に対して、10重量部以上である理由は、10重量部
未満では、熱収縮チユーブとして十分にヒートセ
ツト出来ない為である。一方、フツ化ビニリデン
−フルオロオレフイン共重合体の添加量が100重
量部未満である理由は、100重量部以上の添加で
は、電子線照射による低温性改善の効果が現われ
ないか、むしろ悪くなる為である。 以下に具体例をもつて本発明について説明す
る。 〔実施例〕 実施例 1〜4 第1表に示した樹脂組成物を内径4mm、肉厚
0.5mmのサイズで押出した後、2MeVの電子線加
速器で10Mrad電子線を照射した。該チユーブを
150℃の加熱炉で加熱した後、内径が6mmになる
様外径制御用ダイス中で内圧をかけ、冷却後熱収
縮チユーブと成した。該熱収縮チユーブを180℃
−5分恒温槽に入れ収縮させた後、低温脆化試験
を行ないチユーブが破壊しない最低温度を測定し
た。低温脆化試験の結果を第1表に示した。 比較例 1〜5 第1表に示した樹脂組成物で実施例と同様にし
て熱収縮チユーブを作成し、低温脆化試験を行な
つた。 その結果、テトラフルオロエチレン−プロピレ
ン系共重合体単独ではヒートセツト出来ず、熱収
縮チユーブには出来なかつた。 〔発明の効果〕 第1表に示した様に、テトラフルオロエチレン
−プロピレン系共重合体、フツ化ビニリデン−フ
ルオロオレフイン共重合体各々単独及びテトラフ
ルオロエチレン−プロピレン系共重合体100重量
部に対し、フツ化ビニリデン−フルオロオレフイ
ン共重合体を100重量部以上添加した樹脂組成物
では、電子線照射しても、低温性がむしろ悪くな
るか、変化が見られなかつた。一方、本発明にな
る樹脂組成物では、いずれも電子線照射により、
低温性の改善が見られ、−10℃での使用が可能と
なつた。
【表】
【表】 ** フルオロオレフインとして六フツ化プロピレ
ン 8モル%
*** フルオロオレフインとして四フツ化エチレン
7モル%

Claims (1)

  1. 【特許請求の範囲】 1 テトラフルオロエチレン−プロピレン系共重
    合体100重量部に対しフルオロオレフインが1〜
    20モル%含有するフツ化ビニリデン−フルオロオ
    レフイン(フルオロオレフインが1〜20モル%)
    共重合体10重量部以上100重量部未満および架橋
    促進剤を配合してなり電子線照射により架橋せし
    めた組成物からなることを特徴とするフツ素エラ
    ストマー熱収縮チユーブ。 2 フツ化ビニリデン−フルオロオレフイン共重
    合体におけるフルオロオレフインが六フツ化プロ
    ピレン又は四フツ化エチレンである特許請求の範
    囲第1項記載のフツ素エラストマー熱収縮チユー
    ブ。
JP10226685A 1985-05-14 1985-05-14 フツ素エラストマ−熱収縮チユ−ブ Granted JPS61258727A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP10226685A JPS61258727A (ja) 1985-05-14 1985-05-14 フツ素エラストマ−熱収縮チユ−ブ
EP86106548A EP0203457B1 (en) 1985-05-14 1986-05-14 Fluoroelastomer composition and heat shrinkable articles comprising same
DE8686106548T DE3673066D1 (de) 1985-05-14 1986-05-14 Fluorelastomerzusammensetzung und diese enthaltende waermeschrumpfbare gegenstaende.
US07/188,724 US4960624A (en) 1985-05-14 1988-04-29 Fluoroelastomer composition and heat shrinkable articles comprising same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10226685A JPS61258727A (ja) 1985-05-14 1985-05-14 フツ素エラストマ−熱収縮チユ−ブ

Publications (2)

Publication Number Publication Date
JPS61258727A JPS61258727A (ja) 1986-11-17
JPH0217341B2 true JPH0217341B2 (ja) 1990-04-20

Family

ID=14322790

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10226685A Granted JPS61258727A (ja) 1985-05-14 1985-05-14 フツ素エラストマ−熱収縮チユ−ブ

Country Status (1)

Country Link
JP (1) JPS61258727A (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63278955A (ja) * 1987-05-12 1988-11-16 Hitachi Cable Ltd 含ふっ素エラストマ架橋成形体の製造方法
JPH01255522A (ja) * 1988-04-06 1989-10-12 Sumitomo Electric Ind Ltd 耐熱耐油熱収縮チューブおよび絶縁電線
JP3029203B2 (ja) * 1989-11-15 2000-04-04 株式会社フジクラ 架橋ポリエチレン電力ケーブルの接続部及び端末部

Also Published As

Publication number Publication date
JPS61258727A (ja) 1986-11-17

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