JPS6148540B2 - - Google Patents
Info
- Publication number
- JPS6148540B2 JPS6148540B2 JP13727781A JP13727781A JPS6148540B2 JP S6148540 B2 JPS6148540 B2 JP S6148540B2 JP 13727781 A JP13727781 A JP 13727781A JP 13727781 A JP13727781 A JP 13727781A JP S6148540 B2 JPS6148540 B2 JP S6148540B2
- Authority
- JP
- Japan
- Prior art keywords
- etfe
- pfa
- parts
- weight
- present
- 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
Links
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 claims description 14
- 229920013653 perfluoroalkoxyethylene Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims 1
- 239000011342 resin composition Substances 0.000 claims 1
- 229920011301 perfluoro alkoxyl alkane Polymers 0.000 description 8
- 230000008646 thermal stress Effects 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006367 Neoflon Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229920006355 Tefzel Polymers 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- QHSJIZLJUFMIFP-UHFFFAOYSA-N ethene;1,1,2,2-tetrafluoroethene Chemical compound C=C.FC(F)=C(F)F QHSJIZLJUFMIFP-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Description
本発明は、熱応力亀裂性を改良した四弗化エチ
レン―エチレン共重合樹脂（ETFE）組成物に関
するものである。
従来、ETFE組成物は、物理化学的、機械的、
熱的、電気的諸特性に優れ、かつ押出射出その他
の成型法による加工も容易なことから広く工業用
或は消費機関関係の成型材料として使用されつつ
あるが、最近応力のかかつた状態で高温にさらさ
れることにより亀裂を生じ、更にこれが成長して
破壊に至ること（これを熱応力亀裂と称する）が
見出された。
本発明は、かかる状況に鑑み、ETFE本来の優
れた物理的、化学的、機械的、熱的、電気的諸特
性を損なうことなく熱応力亀裂性を改良する新規
なETFE組成物の提供を目的とするものである。
本発明のETFE組成物は、ETFEを基体とし、
該基体100重量部に対し四弗化エチレン―パーフ
ロロアルコキシエチレン共重合体（PFA）を0.5
重量部以上加てなることを特徴とするものであ
る。
本発明において、ETFEは一般式
で表されるものであり、ダイキン工業(株)からはネ
オフロンETFEなる商品名にて、Du Pont社から
はテフゼルなる商品名にて市販されている。
PFAは一般式、
で表されるものであり、Du Pont社からテフロン
PFAなる商品名で市販されている。
本発明は、ETFE基体100重量部に対しPFAを
0.5重量部以上添加することにより熱応力亀裂性
を改良するものであり、PFAが0.5共重合以下で
はその効果が認め難い。PFAの上限は特に限定
しないが、高価であることから少ない程経済的に
有利である。
以下本発明の実施例を比較例と対比して説明す
る。
第１表の各例に示すような配合割合（重量部）
でもつてETFEとPFA計量し、Ｖ―ブレンダ中
で混合し、続いて厚さ１mmのシートにプレス成形
した。
このシートを４つ折りにして200℃の恒温槽中
に１時間放置した後、亀裂発生の有無を調べた。
この結果は第１表に示す通りである。
The present invention relates to a tetrafluoroethylene-ethylene copolymer resin (ETFE) composition with improved thermal stress cracking properties. Traditionally, ETFE compositions are characterized by physicochemical, mechanical,
Because it has excellent thermal and electrical properties and is easy to process using extrusion injection and other molding methods, it is becoming widely used as a molding material for industrial and consumer machinery. It has been found that exposure to heat causes cracks, which grow further and lead to fracture (this is called a thermal stress crack). In view of this situation, the present invention aims to provide a novel ETFE composition that improves thermal stress cracking properties without impairing the excellent physical, chemical, mechanical, thermal, and electrical properties inherent to ETFE. That is. The ETFE composition of the present invention has ETFE as a base,
0.5 parts of tetrafluoroethylene-perfluoroalkoxyethylene copolymer (PFA) per 100 parts by weight of the base material.
It is characterized in that it is added in an amount of at least part by weight. In the present invention, ETFE has the general formula It is commercially available from Daikin Industries, Ltd. under the trade name Neoflon ETFE, and from Du Pont under the trade name Tefzel. PFA is a general formula, It is expressed by Teflon from Du Pont.
It is commercially available under the trade name PFA. In the present invention, PFA is added to 100 parts by weight of ETFE substrate.
Addition of 0.5 parts by weight or more improves thermal stress cracking properties, and the effect is difficult to recognize when PFA is copolymerized with less than 0.5 parts. There is no particular upper limit to the amount of PFA, but since it is expensive, it is economically advantageous to have less PFA. Examples of the present invention will be described below in comparison with comparative examples. Mixing ratio (parts by weight) as shown in each example in Table 1
ETFE and PFA were then weighed, mixed in a V-blender, and then press-formed into a 1 mm thick sheet. This sheet was folded into four and left in a constant temperature bath at 200° C. for 1 hour, and then the presence or absence of cracks was examined.
The results are shown in Table 1.
【表】【table】
【表】
以上説明してきた通り、本発明によればETFE
の良好な特性を損なうことなく熱応力亀裂性を改
良することができ、その工業的価値は極めて大な
るものがある。[Table] As explained above, according to the present invention, ETFE
Thermal stress cracking properties can be improved without impairing the good properties of the material, and its industrial value is extremely large.
Claims (1)
とし、該基体100重量部に対し四弗化エチレン―
パーフロロアルコキシエチレン共重合体を0.5重
量部以上加えたことを特徴とする四弗化エチレン
―エチレン共重合樹脂組成物。1 Tetrafluoroethylene-ethylene copolymer resin is used as a base, and tetrafluoroethylene-ethylene is added to 100 parts by weight of the base.
A tetrafluoroethylene-ethylene copolymer resin composition characterized in that 0.5 parts by weight or more of a perfluoroalkoxyethylene copolymer is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13727781A JPS5838740A (en) | 1981-08-31 | 1981-08-31 | Tetrafluoroethylene-ethylene copolymer resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13727781A JPS5838740A (en) | 1981-08-31 | 1981-08-31 | Tetrafluoroethylene-ethylene copolymer resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5838740A JPS5838740A (en) | 1983-03-07 |
| JPS6148540B2 true JPS6148540B2 (en) | 1986-10-24 |
Family
ID=15194908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13727781A Granted JPS5838740A (en) | 1981-08-31 | 1981-08-31 | Tetrafluoroethylene-ethylene copolymer resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838740A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5051479A (en) * | 1989-04-03 | 1991-09-24 | E. I. Du Pont De Nemours And Company | Melt processable TFE copolymers with improved processability |
| US6146923A (en) * | 1993-04-09 | 2000-11-14 | Tadahiro Ohmi | Method of smoothing fluorine-containing resin molded article and smoothed molded article |
| US6790912B2 (en) | 2001-12-11 | 2004-09-14 | 3M Innovative Properties Company | Extrudable fluoropolymer blends |
-
1981
- 1981-08-31 JP JP13727781A patent/JPS5838740A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5838740A (en) | 1983-03-07 |
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