JP2992903B2 - Flame retardant resin composition - Google Patents
Flame retardant resin compositionInfo
- Publication number
- JP2992903B2 JP2992903B2 JP28463890A JP28463890A JP2992903B2 JP 2992903 B2 JP2992903 B2 JP 2992903B2 JP 28463890 A JP28463890 A JP 28463890A JP 28463890 A JP28463890 A JP 28463890A JP 2992903 B2 JP2992903 B2 JP 2992903B2
- Authority
- JP
- Japan
- Prior art keywords
- resin composition
- weight
- ethylene
- parts
- flame
- 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
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、燃焼時でも有毒なハロゲン系ガスを発生し
ない難燃性電源・ケーブルを製造するための被覆用の難
燃性樹脂組成物に関する。Description: TECHNICAL FIELD The present invention relates to a flame-retardant resin composition for coating for producing a flame-retardant power source / cable that does not generate toxic halogen-based gas even when burned. .
［従来の技術］ 従来より、電線・ケーブルの難燃化が望まれており、
ハロゲン含有樹脂やハロゲン系難燃剤を配合した樹脂組
成物が電線等の被覆用材料として用いられてきた。[Prior art] Conventionally, flame retardancy of electric wires and cables has been desired.
A resin composition containing a halogen-containing resin or a halogen-based flame retardant has been used as a material for covering electric wires and the like.
しかしながら、これらは加熱・燃焼時に、機器への腐
食性や人体への有害性を有するハロゲン系ガスを発生す
るため、ハロゲンを含有しないエチレン・アクリルエラ
ストマーに水酸化マグネシウムや水酸化アルミニウム等
の無機系難燃剤を添加した樹脂組成物が開発された（特
開昭62〜186411号）。However, these generate halogen-based gases that are corrosive to equipment and harmful to the human body when heated and burned. A resin composition to which a flame retardant has been added has been developed (JP-A-62-186411).
［発明が解決しようとする課題］ しかし、このようにエチレン・アクリルエラストマー
に無機系難燃剤を添加して得た難燃性樹脂組成物におい
ては、この組成物を成形した後にただちに架橋・硬化さ
せないと、未硬化成形物が常温で流動して型くずれを生
じる（いわゆるコールドフロー）という問題があった。
さらに、このような樹脂組成物を成形・硬化させたもの
では、抗張力の向上が望めないという問題もあった。[Problems to be Solved by the Invention] However, in a flame-retardant resin composition obtained by adding an inorganic flame retardant to an ethylene-acryl elastomer as described above, the composition is not crosslinked and cured immediately after molding. Thus, there has been a problem that the uncured molded product flows at room temperature and loses its shape (so-called cold flow).
Further, there is a problem that an improvement in tensile strength cannot be expected in the case of molding and curing such a resin composition.
本発明の課題は、上記のような従来の難燃性樹脂組成
物の欠点を解消し得て、優れた難燃性を有するのみなら
ず、耐コールドフロー性を高め（コールドフローを抑
え）るとともに、抗張力の大きい電線・ケーブル被覆用
の難燃性樹脂組成物を提供する処にある。An object of the present invention is to solve the above-mentioned drawbacks of the conventional flame-retardant resin composition, and not only to have excellent flame retardancy, but also to enhance cold flow resistance (suppress cold flow). It is another object of the present invention to provide a flame-retardant resin composition for covering electric wires and cables having high tensile strength.
［課題を解決するための手段及び作用］ 本発明の難燃性樹脂組成物は、エチレン、メチルアク
リレート及び重合性有機カルボン酸よりなるアクリル系
エラストマー60〜90重量部並びにエチレン−メタクリル
酸共重合体40〜10重量部からなるベース樹脂100重量部
に、水酸化アルミニウムを50〜300重量部配合してな
る。Means and Action for Solving the Problems The flame-retardant resin composition of the present invention comprises 60 to 90 parts by weight of an acrylic elastomer composed of ethylene, methyl acrylate and a polymerizable organic carboxylic acid, and an ethylene-methacrylic acid copolymer 50 to 300 parts by weight of aluminum hydroxide is mixed with 100 parts by weight of a base resin composed of 40 to 10 parts by weight.
本発明においては、エチレン、メチルアクリレート及
び重合性有機カルボン酸よりなるアクリル系エラストマ
ー並びにエチレン−メタクリル酸共重合体によりベース
樹脂を構成しているので、樹脂組成物は、耐コールドフ
ロー性が高く、抗張力も大きい。In the present invention, since the base resin is composed of an acrylic elastomer composed of ethylene, methyl acrylate and a polymerizable organic carboxylic acid and an ethylene-methacrylic acid copolymer, the resin composition has a high cold flow resistance, High tensile strength.
本発明におけるアクリル系エラストマーは、エチレ
ン、メチルアクリレート及び重合性有機カルボン酸より
なり、下記一般式で示される。The acrylic elastomer in the present invention comprises ethylene, methyl acrylate and a polymerizable organic carboxylic acid, and is represented by the following general formula.
このようなアクリル系エラストマーとしては、デュポ
ン社製のベイマックＢ−124、ベイマックHG、ベイマッ
クＧ、ベイマックＮ−123等（いずれも商品名）が例示
される。 Examples of such an acrylic elastomer include Baymac B-124, Baymac HG, Baymac G, and Baymac N-123 (all trade names) manufactured by DuPont.
本発明におけるエチレン−メタクリル酸共重合体は、
下記一般式で示される。The ethylene-methacrylic acid copolymer in the present invention,
It is represented by the following general formula.
このようなエチレン−メタクリル酸共重合体として
は、デュポン社製のニュクレル等が例示される。 Examples of such an ethylene-methacrylic acid copolymer include Nuclel manufactured by DuPont.
水酸化アルミニウムとしては、特に限定はないが、粒
子径が0.5〜1.0μｍでステアリン酸などで表面処理をし
たものが好ましい。このようなものとしては、例えば、
昭和電工社製のハイジライトＨ−42S、ハイジライトＨ
−43Sがある。The aluminum hydroxide is not particularly limited, but preferably has a particle diameter of 0.5 to 1.0 μm and is surface-treated with stearic acid or the like. Such things include, for example,
Heidilite H-42S and Heidilite H manufactured by Showa Denko
There is -43S.
本発明の難燃性樹脂組成物における各成分の割合は次
の通りである。The ratio of each component in the flame-retardant resin composition of the present invention is as follows.
アクリル系エラストマー及びエチレン−メタクリル酸
共重合体からなるベース樹脂においては、エチレン−メ
タクリル酸共重合体が10〜40重量％含有されている。エ
チレン−メタクリル酸共重合体の含有量が10重量％未満
だと、充分な補強効果が得られず、耐コールドフロー性
に劣るだけでなく抗張力が向上しない。エチレン−メタ
クリル酸共重合体の含有量が40重量％を超えると、押出
し成形加工性や伸びが劣る。エチレン−メタクリル酸共
重合体の好ましい含有量は、20〜30重量％である。The base resin composed of an acrylic elastomer and an ethylene-methacrylic acid copolymer contains 10 to 40% by weight of an ethylene-methacrylic acid copolymer. If the content of the ethylene-methacrylic acid copolymer is less than 10% by weight, a sufficient reinforcing effect cannot be obtained, and not only is the cold flow resistance inferior, but also the tensile strength is not improved. When the content of the ethylene-methacrylic acid copolymer exceeds 40% by weight, extrusion processability and elongation are poor. The preferred content of the ethylene-methacrylic acid copolymer is 20 to 30% by weight.
水酸化アルミニウムは、ベース樹脂100重量部に対し
て50〜300重量部配合する。50重量部未満だと、充分な
難燃性を付与することができない。300重量部を超える
と、押出し成形加工性、抗張力、伸び等が低下する。水
酸化アルミニウムの好ましい配合量は、ベース樹脂100
重量部に対して60〜150重量部である。Aluminum hydroxide is added in an amount of 50 to 300 parts by weight based on 100 parts by weight of the base resin. If it is less than 50 parts by weight, sufficient flame retardancy cannot be provided. If it exceeds 300 parts by weight, extrusion processability, tensile strength, elongation, etc., will be reduced. The preferred amount of aluminum hydroxide is 100 base resin.
It is 60 to 150 parts by weight based on parts by weight.
なお、本発明の難燃性樹脂組成物には、上記した必須
の成分のほかに、公知の架橋剤、架橋促進剤、老化防止
剤等を適宜配合することができる。The flame-retardant resin composition of the present invention may appropriately contain known crosslinking agents, crosslinking accelerators, antioxidants, and the like, in addition to the above-mentioned essential components.
［実施例］ 以下、実施例及び比較例により本発明を詳細に説明す
る。EXAMPLES Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples.
実施例１〜５及び比較例１〜５ 第１表に示す割合（重量部）で各成分を配合し、これ
を混練した後に、170℃で25分間プレスしてシートを成
形した。このシートから試験片を作成し、難燃性、抗張
力及び伸びを測定した。Examples 1 to 5 and Comparative Examples 1 to 5 The components were blended in the proportions (parts by weight) shown in Table 1, kneaded, and then pressed at 170 ° C. for 25 minutes to form a sheet. A test piece was prepared from this sheet, and the flame retardancy, tensile strength and elongation were measured.
上記とは別に、混練後に樹脂組成物をシリンダーに入
れて多芯ケーブルのコア上に押出し被覆し（押出し成形
加工性の測定）、この被覆ケーブルをドラムに巻取り、
型くずれの有無を観察した（耐コールドフロー性の測
定）。次に、これを被鉛加硫して、難燃性ケーブルを得
た。Separately from the above, after kneading, the resin composition is put into a cylinder, extruded and coated on the core of the multi-core cable (measurement of extrusion processability), and the coated cable is wound around a drum,
The presence or absence of mold collapse was observed (measurement of cold flow resistance). Next, it was subjected to lead vulcanization to obtain a flame-retardant cable.
各特性の測定結果を第１表に併記した。 Table 1 also shows the measurement results of each characteristic.
第１表からは明らかなように、実施例１〜５の樹脂組
成物は、難燃性に優れるのみならず、耐コールドフロー
性、押出し成形加工性、抗張力及び伸びにおいても優れ
ていた。 As is clear from Table 1, the resin compositions of Examples 1 to 5 were excellent not only in flame retardancy but also in cold flow resistance, extrusion processability, tensile strength and elongation.
これに対し、比較例１の組成物は、水酸化アルミニウ
ムが少ないため、難燃性に劣っていた。比較例２の組成
物は、エチレン−メタクリル酸共重合体が少ないため、
耐コールドフロー性に劣り、抗張力も向上していなかっ
た。比較例３の組成物は、エチレン−メタクリル酸共重
合体が多すぎるため、押出し成形加工性と伸びが劣って
いた。比較例４の組成物は、エチレン−メタクリル酸共
重合体を含んでいないため、耐コールドフロー性に劣
り、抗張力も向上していなかった。比較例５の組成物
は、水酸化アルミニウムが多すぎるため、押出し成形加
工性、抗張力及び伸びが低下していた。On the other hand, the composition of Comparative Example 1 was inferior in flame retardancy due to a small amount of aluminum hydroxide. Since the composition of Comparative Example 2 had a small amount of ethylene-methacrylic acid copolymer,
Poor cold flow resistance and no improvement in tensile strength. The composition of Comparative Example 3 was inferior in extrusion moldability and elongation because the amount of the ethylene-methacrylic acid copolymer was too large. Since the composition of Comparative Example 4 did not contain an ethylene-methacrylic acid copolymer, the composition had poor cold flow resistance and did not improve tensile strength. Since the composition of Comparative Example 5 contained too much aluminum hydroxide, the extrusion processability, tensile strength, and elongation were reduced.
［発明の効果］ 以上のように、本発明の樹脂組成物は、難燃性に優れ
ているのはもちろん、耐コールドフロー性及び抗張力に
おいても優れているので、電線・ケーブル被覆用の難燃
性樹脂組成物として広い範囲で極めて実用的である。[Effects of the Invention] As described above, the resin composition of the present invention is excellent not only in flame retardancy but also in cold flow resistance and tensile strength. It is extremely practical in a wide range as a conductive resin composition.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C08K 23/08 C08K 3/22 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) C08K 23/08 C08K 3/22
Claims (1)
有機カルボン酸よりなるアクリル系エラストマー60〜90
重量部並びにエチレン−メタクリル酸共重合体40〜10重
量部からなるベース樹脂100重量部に、水酸化アルミニ
ウムを50〜300重量部配合してなる電線・ケーブル被覆
用の難燃性樹脂組成物。An acrylic elastomer comprising ethylene, methyl acrylate and a polymerizable organic carboxylic acid.
A flame-retardant resin composition for covering electric wires and cables, comprising 50 to 300 parts by weight of aluminum hydroxide mixed with 100 parts by weight of a base resin consisting of 40 to 10 parts by weight of an ethylene-methacrylic acid copolymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28463890A JP2992903B2 (en) | 1990-10-22 | 1990-10-22 | Flame retardant resin composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28463890A JP2992903B2 (en) | 1990-10-22 | 1990-10-22 | Flame retardant resin composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04159346A JPH04159346A (en) | 1992-06-02 |
| JP2992903B2 true JP2992903B2 (en) | 1999-12-20 |
Family
ID=17681064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28463890A Expired - Fee Related JP2992903B2 (en) | 1990-10-22 | 1990-10-22 | Flame retardant resin composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2992903B2 (en) |
-
1990
- 1990-10-22 JP JP28463890A patent/JP2992903B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04159346A (en) | 1992-06-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3553348A (en) | Polymeric blends for insulation composition | |
| JPS60124644A (en) | Oil-resistant flame-retardant composition | |
| JP2992903B2 (en) | Flame retardant resin composition | |
| JP2005133036A (en) | Non-halogen flame retardant thermoplastic resin composition and electric wire and cable using the same | |
| DE112009001623T5 (en) | Flame retardant composition, insulated electrical wire and harness using the composition | |
| JP2961386B2 (en) | Flame retardant resin composition | |
| JPH06322276A (en) | Flame-retardant composition and electric wire and cable | |
| US3039989A (en) | Curable polyethylene containing basic lead carbonate and a peroxide curing agent | |
| JP2648874B2 (en) | Heat-resistant polyolefin composition | |
| JPH0822716A (en) | High dielectric constant insulating rubber material | |
| JP2869817B2 (en) | Flame retardant composition | |
| JPH11140246A (en) | Abrasion resistant flame retarding resin composition, its production and insulated wire | |
| JPH10279736A (en) | Abrasion-resistant and flame retardant resin composition, its production and insulated wire | |
| UA69475C2 (en) | Composite insulating material | |
| JPS6326906A (en) | Flame resisting electrically insulating composition | |
| JP2582395B2 (en) | Flame retardant composition | |
| JPH08127673A (en) | Chloroprene-based rubber composition | |
| JP2554657B2 (en) | Flame retardant chlorine polyethylene composition | |
| JPH07179705A (en) | Method for crosslinking fluororubber composition and its crosslinked molded product | |
| JPH04334811A (en) | Flame retardant electric insulating composite | |
| JP2527103B2 (en) | Flame retardant electrical insulation composition | |
| JPS565841A (en) | Crosslinked composition of flame-retardant polyolefin-based resin | |
| JP2002338755A (en) | Nonhalogen flame-retardant resin composition and electric wire/cable using the same | |
| JPH03227337A (en) | Flame retardant composition and flame retardant cable | |
| JPS62117202A (en) | Vulcanized ep rubber insulated power cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081022 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091022 Year of fee payment: 10 |
|
| LAPS | Cancellation because of no payment of annual fees |