JP4503204B2 - Renewable vinyl chloride resin composition and molded body - Google Patents
Renewable vinyl chloride resin composition and molded body Download PDFInfo
- Publication number
- JP4503204B2 JP4503204B2 JP2001221190A JP2001221190A JP4503204B2 JP 4503204 B2 JP4503204 B2 JP 4503204B2 JP 2001221190 A JP2001221190 A JP 2001221190A JP 2001221190 A JP2001221190 A JP 2001221190A JP 4503204 B2 JP4503204 B2 JP 4503204B2
- Authority
- JP
- Japan
- Prior art keywords
- resin composition
- vinyl chloride
- chloride resin
- stearate
- molded body
- 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 - Fee Related
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- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
【０００１】
【従来の技術】
屋外用電線が永年架渉されていると、熱や端末から硫酸ミストを含む雨水が浸入して前記電線が応力腐食断線を起こすことは広く知られており、その対策として図１に示すように導体１と絶縁体２との間、特に撚り導体の場合は素線間の隙間を含めてＥＶＡ（エチレン酢酸ビニル共重合体）、あるいはＰＶＣ−ＶＡ（塩化ビニル・酢酸ビニル共重合体）を主体とするコンパウンド３を充填している。
【０００２】
上記のように応力腐食断線対策を施した水密屋外用ビニル絶縁電線（以下、水密ＯＷという）でも永年架渉されていると、風雪、紫外線、熱、硫酸ミストなど種々の環境による攻撃を受け絶縁劣化を起こすので一定期間経過すると取り替え回収される。
【０００３】
このように回収された水密ＯＷの導体は、１００％近く素材としてリサイクルされるが、回収絶縁被覆材の方は、上記水密充填したコンパウンドとの分離が困難で、回収絶縁被覆材には上記水密充填コンパウンドが８％程度混在している。
【０００４】
【発明が解決しようとする課題】
このように水密充填コンパウンドが混在している回収絶縁被覆材をそのまま押出し成形すると、押出し成形品の表面が平滑にならない。
【０００５】
そこで本発明者等は、予め一定割合でステアリン酸鉛を添加した塩化ビニル樹脂組成物を調製し、この塩化ビニル樹脂組成物でもって水密ＯＷを試作し、試作した水密ＯＷの絶縁被覆を剥ぎ取って裁断し、これを２０mmの小型押出機（Ｌ／Ｄ＝２０，スクリュー３０ｒｐｍ，シリンダー１８５℃）で幅１０mm×厚さ１mmの帯を成形したところ外観と物理的特性とも良好なものを得ることができた。
【０００６】
この発明は、上記知見に基づくもので、水密ＯＷの回収絶縁被覆材をそのまま押出成形しリサイクルした場合でも外観および物理的特性の良い塩化ビニル樹脂組成物とその成形品を提供することを課題とする。
【０００７】
【課題を解決するための手段】
上記課題を解決するためにこの発明は、塩化ビニル樹脂組成物に、ステアリン酸鉛、ステアリン酸亜鉛、ステアリン酸バリウム、ステアリン酸カルシウム、ステアリン酸マグネシウム、二塩基性ステアリン酸鉛などの金属石鹸の群から少なくとも一つを、０．３乃至３重量％、好ましくは０．４乃至２重量％添加し加熱混練してなる。
【０００８】
上記の如く構成するこの発明によれば、塩化ビニル樹脂組成物に上記特定の添加剤を特定量添加することにより水密ＯＷの回収絶縁被覆材をそのまま押出成形した場合でも外観、物理的特性とも遜色のない塩化ビニル樹脂組成物が得られる。
【０００９】
【発明の実施の形態】
次にこの発明の実施形態を説明する。塩化ビニル樹脂組成物だけのものと、ステアリン酸鉛の添加量を０．２％から３．５％まで段階的に増量した塩化ビニル樹脂組成物を作製し、更に、上記各塩化ビニル樹脂組成物にＥＶＡを主体とする水密充填コンパウンドを８％添加したものと、添加しないものを準備して、各塩化ビニル樹脂組成物を２０mm小型押出成形機（Ｌ／Ｄ＝２０，スクリュー３０ｒｐｍ，シリンダー１８５℃）にて幅１０mm×厚さ１mmの帯を成形して外観を観察し、サンプルを採取して引っ張り強さおよび伸び試験を行った結果を表１に示す。
【００１０】
なお、外観は表面が滑らかなものは○、表面に凹凸があるものは×、引っ張り強さ１０ＭＰa 、伸び１００％の目標値をクリヤーしたものは○、できなかったものは×とした。表１の結果から、ステアリン酸鉛を適切な範囲で添加することにより外観を滑らかにする効果があることが分る。
【００１１】
【表１】
なお、表１はステアリン酸鉛を添加したサンプルによる試験結果を示しているが、ステアリン酸亜鉛、ステアリン酸バリウム、ステアリン酸カルシウム、ステアリン酸マグネシウム、二塩基性ステアリン酸鉛、金属石鹸についても同様の効果を得ることができる。
【００１３】
また、上記の如く得られた再生塩化ビニル樹脂組成物を電気導体に被覆することにより実用上遜色のない絶縁電線が得られる。
【００１４】
【発明の効果】
以上説明した如くこの発明によれば、水密ＯＷの回収絶縁被覆材を再利用して実用上遜色のない塩化ビニル樹脂組成物と絶縁電線が得られる。
【図面の簡単な説明】
【図１】水密屋外用ビニル絶縁電線の断面図
【符号の説明】
１ 導体
２ 絶縁体
３ コンパウンド[0001]
[Prior art]
It has been widely known that when outdoor electric wires have been negotiated for a long time, rainwater containing sulfuric acid mist infiltrates from heat and terminals and the electric wires cause stress corrosion disconnection, as shown in FIG. Mainly EVA (ethylene vinyl acetate copolymer) or PVC-VA (vinyl chloride / vinyl acetate copolymer) between
[0002]
Even if the water-tight outdoor vinyl insulated wire (hereinafter referred to as water-tight OW) with countermeasures against stress-corrosion disconnection as described above has been negotiated for many years, it is insulated against various environmental attacks such as wind and snow, ultraviolet rays, heat, and sulfuric acid mist. Since it deteriorates, it is replaced and collected after a certain period of time.
[0003]
The collected watertight OW conductor is recycled as nearly 100% of the material, but the recovered insulation coating material is more difficult to separate from the watertight filled compound, and the recovered insulation coating material has the above watertightness. About 8% of filling compound is mixed.
[0004]
[Problems to be solved by the invention]
When the recovered insulating coating material in which the watertight filling compound is mixed is extruded as it is, the surface of the extruded product is not smooth.
[0005]
Therefore, the present inventors prepared a vinyl chloride resin composition to which lead stearate was added in a certain ratio in advance, made a prototype of watertight OW with this vinyl chloride resin composition, and stripped off the insulation coating of the prototyped watertight OW. When a band of 10 mm width x 1 mm thickness is formed using a 20 mm small extruder (L / D = 20, screw 30 rpm, cylinder 185 ° C.), a good appearance and physical properties are obtained. I was able to.
[0006]
This invention is based on the above knowledge, and it is an object of the present invention to provide a vinyl chloride resin composition having good appearance and physical properties and a molded product thereof even when the watertight OW recovered insulation coating material is extruded and recycled as it is. To do.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention relates to a vinyl chloride resin composition from a group of metal soaps such as lead stearate, zinc stearate, barium stearate, calcium stearate, magnesium stearate, and dibasic lead stearate. At least one is added in an amount of 0.3 to 3% by weight, preferably 0.4 to 2% by weight and kneaded with heating.
[0008]
According to the present invention configured as described above, both the appearance and physical characteristics are inferior even when the watertight OW recovered insulating coating material is directly extruded by adding a specific amount of the specific additive to the vinyl chloride resin composition. A vinyl chloride resin composition free from the above is obtained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described. A vinyl chloride resin composition having only a vinyl chloride resin composition and a stepwise increase in the amount of lead stearate added from 0.2% to 3.5% was prepared. 8% water-tight filling compound mainly composed of EVA and one not added were prepared, and each vinyl chloride resin composition was 20 mm small extruder (L / D = 20, screw 30 rpm, cylinder 185 ° C.) ), A band having a width of 10 mm × thickness of 1 mm was formed, the appearance was observed, a sample was taken, and the results of tensile strength and elongation tests were shown in Table 1.
[0010]
As for the appearance, the surface was smooth, the surface was uneven, the surface was uneven, the tensile strength was 10 MPa, the elongation of 100% was cleared, and the surface was not. From the results in Table 1, it can be seen that there is an effect of smoothing the appearance by adding lead stearate in an appropriate range.
[0011]
[Table 1]
Table 1 shows the test results of the sample to which lead stearate was added, but the same effect was obtained with zinc stearate, barium stearate, calcium stearate, magnesium stearate, dibasic lead stearate, and metal soap. Can be obtained.
[0013]
Moreover, an insulated wire practically inferior can be obtained by coating the electric conductor with the regenerated vinyl chloride resin composition obtained as described above.
[0014]
【The invention's effect】
As described above, according to the present invention, a vinyl chloride resin composition and an insulated wire which are practically inferior can be obtained by reusing the watertight OW recovered insulation coating material.
[Brief description of the drawings]
[Fig. 1] Cross section of water-insulated outdoor vinyl insulated wire [Explanation of symbols]
1
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001221190A JP4503204B2 (en) | 2001-07-23 | 2001-07-23 | Renewable vinyl chloride resin composition and molded body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001221190A JP4503204B2 (en) | 2001-07-23 | 2001-07-23 | Renewable vinyl chloride resin composition and molded body |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2003026880A JP2003026880A (en) | 2003-01-29 |
| JP2003026880A5 JP2003026880A5 (en) | 2008-07-03 |
| JP4503204B2 true JP4503204B2 (en) | 2010-07-14 |
Family
ID=19054892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001221190A Expired - Fee Related JP4503204B2 (en) | 2001-07-23 | 2001-07-23 | Renewable vinyl chloride resin composition and molded body |
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|---|---|
| JP (1) | JP4503204B2 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04255744A (en) * | 1990-08-30 | 1992-09-10 | Rohm & Haas Co | Resin composition |
| JPH06107886A (en) * | 1992-09-28 | 1994-04-19 | Mitsubishi Plastics Ind Ltd | Stabilizer for preventing discoloration of recycling poly@(3754/24)vinyl chloride) feedstock and molding method using the same |
| JPH0794038A (en) * | 1993-05-31 | 1995-04-07 | Tatsuta Electric Wire & Cable Co Ltd | Vinyl chloride insulated wire for outdoor use |
| JPH1017744A (en) * | 1996-07-02 | 1998-01-20 | Mitsubishi Rayon Co Ltd | Vinyl chloride-based resin composition |
| JPH1053571A (en) * | 1996-03-22 | 1998-02-24 | Ciba Specialty Chem Holding Inc | Stabilizer for chlorine-containing polymer |
| JPH10316816A (en) * | 1997-05-21 | 1998-12-02 | Sekisui Chem Co Ltd | Vinyl chloride resin composition |
| JPH11203941A (en) * | 1998-01-14 | 1999-07-30 | Furukawa Electric Co Ltd:The | Manufacture of foaming vinyl sheath wire/cable |
-
2001
- 2001-07-23 JP JP2001221190A patent/JP4503204B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04255744A (en) * | 1990-08-30 | 1992-09-10 | Rohm & Haas Co | Resin composition |
| JPH06107886A (en) * | 1992-09-28 | 1994-04-19 | Mitsubishi Plastics Ind Ltd | Stabilizer for preventing discoloration of recycling poly@(3754/24)vinyl chloride) feedstock and molding method using the same |
| JPH0794038A (en) * | 1993-05-31 | 1995-04-07 | Tatsuta Electric Wire & Cable Co Ltd | Vinyl chloride insulated wire for outdoor use |
| JPH1053571A (en) * | 1996-03-22 | 1998-02-24 | Ciba Specialty Chem Holding Inc | Stabilizer for chlorine-containing polymer |
| JPH1017744A (en) * | 1996-07-02 | 1998-01-20 | Mitsubishi Rayon Co Ltd | Vinyl chloride-based resin composition |
| JPH10316816A (en) * | 1997-05-21 | 1998-12-02 | Sekisui Chem Co Ltd | Vinyl chloride resin composition |
| JPH11203941A (en) * | 1998-01-14 | 1999-07-30 | Furukawa Electric Co Ltd:The | Manufacture of foaming vinyl sheath wire/cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003026880A (en) | 2003-01-29 |
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