JPS6088048A - Low-smoking flame-retardant resin composition - Google Patents

Low-smoking flame-retardant resin composition

Info

Publication number
JPS6088048A
JPS6088048A JP19729883A JP19729883A JPS6088048A JP S6088048 A JPS6088048 A JP S6088048A JP 19729883 A JP19729883 A JP 19729883A JP 19729883 A JP19729883 A JP 19729883A JP S6088048 A JPS6088048 A JP S6088048A
Authority
JP
Japan
Prior art keywords
low
parts
weight
resin composition
retardant resin
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.)
Pending
Application number
JP19729883A
Other languages
Japanese (ja)
Inventor
Mamoru Kondo
守 近藤
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 JP19729883A priority Critical patent/JPS6088048A/en
Publication of JPS6088048A publication Critical patent/JPS6088048A/en
Pending legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、燃焼時、発煙量が著しく少ない難燃樹脂組成
物に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a flame-retardant resin composition that emits significantly less smoke when burned.

〔発明の背景〕[Background of the invention]

在来のポリオレフィン系樹脂の難燃化は、ハロゲンを含
む難燃剤と三酸化アンチモンの併用によって為されるこ
とが多い。しかし、この様な組成物はハロゲンが含まれ
ていることから高度の難燃性を示すが、燃焼時発煙量が
多く、問題であった。
Flame retardation of conventional polyolefin resins is often achieved by the combined use of halogen-containing flame retardants and antimony trioxide. However, although such a composition exhibits a high degree of flame retardancy because it contains halogen, it generates a large amount of smoke when burned, which is a problem.

燃焼時発煙量が少ない組成物として、ポリオレフィン系
樹脂に水酸化アルミニウム等の水和無機化合物を多量に
添加したものが提案されている。
A composition in which a large amount of a hydrated inorganic compound such as aluminum hydroxide is added to a polyolefin resin has been proposed as a composition that generates less smoke during combustion.

この組成物は、発煙性に関しては上記ハロゲンを含む難
燃剤と三酸化アンチモンを併用した組成物に比べ、発煙
量は少ないが、それでも満足出来る低発煙性、難燃性が
得られず実用に供されていない。
In terms of smoke generation, this composition produces less smoke than a composition that uses a combination of the above-mentioned halogen-containing flame retardant and antimony trioxide. It has not been.

〔発明の要約〕[Summary of the invention]

本発明は、上記の点に鑑みて為されkもので、低圧法低
密度ポリエチレン100重量部、水和無機化合物が50
〜200重量部、赤リンが5〜50重量部含有する樹脂
組成物を提供するものである。本発明の樹脂組成物は十
分な高難燃性と低発煙性を有するものである。
The present invention has been made in view of the above points, and consists of 100 parts by weight of low-pressure low-density polyethylene and 50 parts by weight of a hydrated inorganic compound.
-200 parts by weight, and a resin composition containing 5 to 50 parts by weight of red phosphorus. The resin composition of the present invention has sufficiently high flame retardancy and low smoke emission.

〔発明の詳細な説明〕[Detailed description of the invention]

本発明において、低圧法低密度ポリエチレンを用いると
他のポリオレフィンを用いるより著しく発煙量が少なく
なる。
In the present invention, when low-pressure low-density polyethylene is used, the amount of smoke generated is significantly lower than when other polyolefins are used.

水和無機化合物として、水酸化アルミニウム、水酸化マ
グネシウム、塩基性炭酸マグネシウム、水酸化カルシウ
ム、水酸化バリウム等が挙げられるが、特に水酸化アル
ミニウム、水酸化マグネシウムがより高い難燃性が得ら
れ、好ましい。
Examples of hydrated inorganic compounds include aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, calcium hydroxide, barium hydroxide, etc., but especially aluminum hydroxide and magnesium hydroxide have higher flame retardancy. preferable.

赤リンは、樹脂に含有された状態において元素リンとし
て存在するもので、樹脂に混練する際は赤リンの粒子表
面で酸化環元反応が起こらないように、生成したリン酸
分の吸湿性により表面に水分が何着しないように、また
、温度を上げることにより発火しないように、微粒子赤
リンの表面を樹脂で被覆したものを混練する。又、赤リ
ンを糊剤等で混練したものを樹脂と混合させることによ
っても、樹脂に含有させることが可能である。
Red phosphorus exists as elemental phosphorus when it is contained in resin, and when kneading it into resin, it is mixed with the hygroscopicity of the generated phosphoric acid to prevent an oxidation ring reaction from occurring on the surface of the red phosphorus particles. The surface of fine red phosphorus particles coated with a resin is kneaded to prevent moisture from adhering to the surface and to prevent ignition by increasing the temperature. It is also possible to incorporate red phosphorus into the resin by kneading it with a sizing agent or the like and mixing it with the resin.

本発明にふ・いて水和無機化合物と赤リンを併用するの
は、高難燃性の組成物が得られる為で、水和無機化合物
単独では低発煙性を示すものの難燃性の点で満足すべき
ものではなく、赤リン単独でも難燃性で満足出来ない。
The reason why a hydrated inorganic compound and red phosphorus are used together in the present invention is that a highly flame-retardant composition can be obtained. This is not satisfactory, and even red phosphorus alone has unsatisfactory flame retardancy.

水和無機化合物と赤リンのポリオレフィン100重量部
に対する含有量は、それぞれ50〜200重量部及び5
〜50重敏部で、水和無機化合物が200重量部を超え
、又、赤リンが50重量部を超えた場合は組成物の機械
的特性の低下が大きく使用出来なくなり、それぞれが5
0重量部及び5重量部未満の場合は十分な難燃性が得ら
れない。
The contents of the hydrated inorganic compound and red phosphorus are 50 to 200 parts by weight and 5 parts by weight, respectively, based on 100 parts by weight of the polyolefin.
~50 parts by weight, if the hydrated inorganic compound exceeds 200 parts by weight, and if the red phosphorus exceeds 50 parts by weight, the mechanical properties of the composition will deteriorate so much that it cannot be used, and each
If the amount is 0 parts by weight or less than 5 parts by weight, sufficient flame retardancy cannot be obtained.

特に、水利無機化合物と赤リンの含有比率が無機化合物
5に対して赤リン1の割合のとき、高い難燃性が得られ
好ましい。
In particular, when the content ratio of the water conserving inorganic compound and red phosphorus is 1 part red phosphorus to 5 parts inorganic compound, high flame retardance can be obtained, which is preferable.

本発明の組成物には、水利無機化合物、赤リンの他に、
適宜、老化防止剤、着色剤、加工助剤、架橋剤、架橋助
剤、軟化剤、紫外線劣化防止剤等を加えてもよい。
In addition to the water conserving inorganic compound and red phosphorus, the composition of the present invention includes:
Anti-aging agents, colorants, processing aids, cross-linking agents, cross-linking aids, softeners, ultraviolet deterioration inhibitors, etc. may be added as appropriate.

〔実施例〕〔Example〕

第1表に示す各種配合について、バンバリーミキサ−を
用いて混合し、然る後1 mm及び2 mmmレシート
熱プレスを用い作成した。
The various formulations shown in Table 1 were mixed using a Banbury mixer, and then prepared using a 1 mm and 2 mm receipt heat press.

得られたこれらプレスシートについて下記の各種試験を
行なった。結果は第1表に91記する通りである。
The following various tests were conducted on the obtained press sheets. The results are shown in Table 1.

(1)難燃性 2 mmmレシートついて、Jl、S K7201に従
って酸素指数を測定し、難燃性を評価した。
(1) Flame retardancy The oxygen index of the 2 mm receipt was measured according to Jl, SK7201 to evaluate the flame retardancy.

(11)抗張力及び伸 l mmmレシートついて、JIS C300516に
従って、抗張力及び仲を測定した。
(11) Tensile strength and elongation The tensile strength and elongation of the mmmm receipt were measured according to JIS C300516.

0ii)発煙性 1+nn+厚シートについて、NBSスモークチェンバ
ーを用いて発煙量を測定した。無炎及び発炎の二条性で
行ない最大発煙量をめた。最大発煙量は次式で計算し、
値の小さい方が発煙量は少ない。
0ii) Smoke generation rate Regarding the 1+nn+ thick sheet, the amount of smoke generation was measured using an NBS smoke chamber. The maximum amount of smoke was determined by conducting two tests, one without flame and one with flame. The maximum smoke amount is calculated using the following formula,
The smaller the value, the less smoke is produced.

最大発煙量−−t、og上 A−L キT 8 ft”)+ A : サンプルの表面積(6,25
1n2) L :光路長(3ft)、T:最小光透過率
(%)低圧法低密度ポリエチレンに水酸化アルミニウム
と赤リンを含有させた組成物(実施例1及び2)は無炎
及び有炎条件における発煙量が少ないが、同じポリエチ
レンであっても高圧法低密度ポリエチレン、低、用法高
密度ポリエチレンを用いた組成物(比較例1及び2)は
発煙量が著しく多い。ポリエチレンに代りEVA (エ
チレン酢酸ビニル共爪合体)(比較例3)、或は、EE
A (エチレンエチルアクリレート共重合体)(比較例
4・)を用いた場合も発煙量が著しく多い。低圧法低密
度ポリエチレンに従来から使用されている備:燃剤であ
るデカブロモジフェニルエーテルと三酸化アンチモンを
配合した組成物(比較例5)も発煙量が多い。
Maximum smoke amount - t, og A - L Ki T 8 ft”) + A: Surface area of sample (6,25
1n2) L: Optical path length (3 ft), T: Minimum light transmittance (%) The compositions (Examples 1 and 2) containing aluminum hydroxide and red phosphorus in low-pressure low-density polyethylene were flameless and flameless. Although the amount of smoke generated under these conditions is small, even if the same polyethylene is used, the compositions using high-pressure process low-density polyethylene and low-use high-density polyethylene (Comparative Examples 1 and 2) have a significantly large amount of smoke. Instead of polyethylene, EVA (ethylene-vinyl acetate joint) (comparative example 3) or EE
When A (ethylene ethyl acrylate copolymer) (Comparative Example 4) was used, the amount of smoke generated was also significantly large. A composition (Comparative Example 5) containing decabromodiphenyl ether, a fuel agent, and antimony trioxide, which has been conventionally used in low-pressure low-density polyethylene, also produces a large amount of smoke.

低圧法低密度ポリエチレンに水酸化アルミニウムと赤リ
ンを配合した組成物のうち、水酸化アルミニウムが重量
部未満で、赤リンが重量部未満である組成物(比較例3
)、水酸化アルミニウムが重量部超で、赤リンが重量部
超である組成物は、それぞれ実施例1及び2に比べ、難
燃性(酸素指数)が低いこと及び抗張力・伸びが劣るこ
とがわかる。
Among compositions in which aluminum hydroxide and red phosphorus are blended with low-pressure low-density polyethylene, a composition in which aluminum hydroxide is less than parts by weight and red phosphorus is less than parts by weight (Comparative Example 3)
), compositions containing more than parts by weight of aluminum hydroxide and more than parts by weight of red phosphorus have lower flame retardancy (oxygen index) and inferior tensile strength and elongation compared to Examples 1 and 2, respectively. Recognize.

Claims (3)

【特許請求の範囲】[Claims] (1)低圧法低密度ポリエチレン100重量部に、水和
無機化合物が50〜200重量部、赤リンが5〜50重
量部含有されて成ることを特徴とする低煙性難燃樹脂組
成物。
(1) A low-smoke flame-retardant resin composition comprising 100 parts by weight of low-pressure low-density polyethylene, 50 to 200 parts by weight of a hydrated inorganic compound, and 5 to 50 parts by weight of red phosphorus.
(2)水和無機化合物が、水酸化アルミニウムである特
許請求の範囲第(1)項記載の低煙性難燃樹脂組成物。
(2) The low smoke flame retardant resin composition according to claim (1), wherein the hydrated inorganic compound is aluminum hydroxide.
(3)水和無機化合物が、水酸化マグネシウムである特
許請求の範囲第(1)項記載の低煙性難燃樹脂組成物。
(3) The low smoke flame retardant resin composition according to claim (1), wherein the hydrated inorganic compound is magnesium hydroxide.
JP19729883A 1983-10-20 1983-10-20 Low-smoking flame-retardant resin composition Pending JPS6088048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19729883A JPS6088048A (en) 1983-10-20 1983-10-20 Low-smoking flame-retardant resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19729883A JPS6088048A (en) 1983-10-20 1983-10-20 Low-smoking flame-retardant resin composition

Publications (1)

Publication Number Publication Date
JPS6088048A true JPS6088048A (en) 1985-05-17

Family

ID=16372129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19729883A Pending JPS6088048A (en) 1983-10-20 1983-10-20 Low-smoking flame-retardant resin composition

Country Status (1)

Country Link
JP (1) JPS6088048A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6222839A (en) * 1985-07-23 1987-01-31 Showa Electric Wire & Cable Co Ltd Flame-retardant composition
JPS6259649A (en) * 1985-09-10 1987-03-16 Sumitomo Electric Ind Ltd Flame retardant rubber composition
JPH0479880U (en) * 1990-11-26 1992-07-13

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6222839A (en) * 1985-07-23 1987-01-31 Showa Electric Wire & Cable Co Ltd Flame-retardant composition
JPS6259649A (en) * 1985-09-10 1987-03-16 Sumitomo Electric Ind Ltd Flame retardant rubber composition
JPH0479880U (en) * 1990-11-26 1992-07-13

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