JPH1036572A - Flame retardant rubber composition and its production - Google Patents
Flame retardant rubber composition and its productionInfo
- Publication number
- JPH1036572A JPH1036572A JP19480496A JP19480496A JPH1036572A JP H1036572 A JPH1036572 A JP H1036572A JP 19480496 A JP19480496 A JP 19480496A JP 19480496 A JP19480496 A JP 19480496A JP H1036572 A JPH1036572 A JP H1036572A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- flame
- rubber composition
- expandable graphite
- retardant rubber
- 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.)
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- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電線・電纜、ホー
ス、ガスケット、シーラント、ゴムパッキン等の工業用
ゴム用途に用いられる難燃性ゴム組成物である。TECHNICAL FIELD The present invention relates to a flame-retardant rubber composition used for industrial rubber applications such as electric wires and cables, hoses, gaskets, sealants, and rubber packings.
【０００２】[0002]
【従来の技術】従来より、鱗片状及び土塊状の粒状形態
を持つ膨脹性黒鉛を難燃性付与剤として利用する試みが
なされてきた。しかし、その膨脹性黒鉛の持つ特異な粒
状形態がもたらす、ゴム配合物への分散の悪さによる種
々の問題、例えば、押出製品の表面に見られる表面肌荒
れ、型物製品の表面に見られる斑点発生等の問題、さら
には機械的強度の低下等から、膨脹性黒鉛の持つ難燃性
を十分に活かすことが出来なかった。2. Description of the Related Art Hitherto, attempts have been made to utilize expandable graphite having a flake-like or earth-like granular form as a flame retardant. However, various problems due to poor dispersion in the rubber compound caused by the unique granular morphology of the expandable graphite, for example, surface roughening on the surface of an extruded product, spotting on the surface of a molded product However, due to the problems such as the mechanical strength and the like, the flame retardancy of the expandable graphite cannot be fully utilized.
【０００３】[0003]
【発明が解決しようとする課題】本発明はかかる課題に
鑑みてなされたもので、その目的は、ゴムに膨脹性黒鉛
が均一に分散された難燃性ゴム組成物を提供することで
ある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a flame-retardant rubber composition in which expandable graphite is uniformly dispersed in rubber.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、この様な
状況に鑑み、鋭意検討を重ねた結果、ゴムに膨脹性黒鉛
を均一に分散させるため、予備練り混練法により、予め
ゴムと膨脹性黒鉛とのマスターバッチを製造し、しかる
後に該マスターバッチとゴムとを混練することで、ゴム
配合物中に膨脹性黒鉛が均一に分散された難燃性ゴム組
成物を製造出来ることを見い出し、本発明を完成させる
に至った。Means for Solving the Problems In view of such a situation, the present inventors have made intensive studies, and as a result, in order to uniformly disperse the expandable graphite in the rubber, a preliminary kneading and kneading method has been used. By producing a masterbatch with expandable graphite and then kneading the masterbatch and rubber, it is possible to produce a flame-retardant rubber composition in which expandable graphite is uniformly dispersed in a rubber compound. They have found and completed the present invention.
【０００５】即ち本発明は、ゴム１００重量部に対し、
膨脹性黒鉛１０〜２００重量部よりなるマスターバッチ
を予め製造し、ゴム１００重量部に対し、膨脹性黒鉛１
〜３０重量部になるよう該マスターバッチを用いてなる
ことを特徴とする難燃性ゴム組成物及びその製造方法で
ある。That is, the present invention relates to 100 parts by weight of rubber,
A masterbatch composed of 10 to 200 parts by weight of the expandable graphite was prepared in advance, and 100 parts by weight of the rubber was added to the expandable graphite 1.
A flame-retardant rubber composition and a method for producing the same, wherein the master batch is used in an amount of up to 30 parts by weight.
【０００６】以下、本発明を詳細に説明する。Hereinafter, the present invention will be described in detail.
【０００７】本発明におけるゴムは、特に限定するもの
ではなく、例えば天然ゴム（ＮＲ）あるいはスチレン・
ブタジエンゴム（ＳＢＲ）、ブタジエンゴム（ＢＲ）、
ブチルゴム（ＩＩＲ）、クロロプレンゴム（ＣＲ）、ア
クリロニトリル・ブタジエンゴム（ＮＢＲ）、エチレン
・プロピレン・ジエンゴム（ＥＰＤＭ）等の各種合成ゴ
ムが挙げられる。[0007] The rubber in the present invention is not particularly limited. For example, natural rubber (NR) or styrene.
Butadiene rubber (SBR), butadiene rubber (BR),
Various synthetic rubbers such as butyl rubber (IIR), chloroprene rubber (CR), acrylonitrile / butadiene rubber (NBR), and ethylene / propylene / diene rubber (EPDM) are exemplified.
【０００８】本発明における膨脹性黒鉛は、六方晶系の
六角板状偏平結晶で、鱗片状及び土塊状の粒状形態を有
している。膨脹性黒鉛は、平均粒径が１００〜４００μ
ｍ程度の比較的大粒径の結晶で、室温から８００〜１０
００℃への急速な加熱によって、結晶Ｃ軸方向に１００
〜３００倍程度の加熱膨脹を生じる性質を有する。加熱
膨脹時にそれぞれの粒子が多孔質の炭化物を形成し、そ
の結果、酸素の侵入及び熱伝導を遮断することで難燃性
効果を有するものである。The expandable graphite in the present invention is a hexagonal hexagonal plate-like flat crystal, and has a flake-like and earth-like granular form. Expandable graphite has an average particle size of 100 to 400 μm.
m is a crystal with a relatively large particle size of about
By rapid heating to 00 ° C., 100
It has the property of causing a thermal expansion of about 300 times. Each particle forms a porous carbide when heated and expanded, and as a result, has a flame-retardant effect by blocking intrusion of oxygen and heat conduction.
【０００９】本発明におけるマスターバッチは、ゴム１
００重量部に対し膨脹性黒鉛１０〜２００重量部よりな
るものであるが、膨脹性黒鉛が１０重量部未満の場合、
難燃性ゴム組成物の製造に用いるマスターバッチの配合
比率が高くなり、その他の配合剤の分散の均一性が阻害
される恐れがある。膨脹性黒鉛が２００重量部を越える
場合は、マスターバッチ製造における混練作業におい
て、スコーチトラブルの恐れがあり、好ましくない。In the present invention, the master batch is rubber 1
It is composed of 10 to 200 parts by weight of expandable graphite with respect to 00 parts by weight, but when the amount of expandable graphite is less than 10 parts by weight,
The mixing ratio of the masterbatch used in the production of the flame-retardant rubber composition may increase, and the uniformity of dispersion of other compounding agents may be impaired. If the amount of the expandable graphite exceeds 200 parts by weight, scorch trouble may occur in the kneading operation in the production of a master batch, which is not preferable.
【００１０】本発明において、膨脹性黒鉛の均一な分散
を可能とする手段として、予め予備練り混練法によりゴ
ムと膨脹性黒鉛とのマスターバッチを製造し、しかる後
に該マスターバッチとゴムとを混練し、膨脹性黒鉛が均
一に分散された難燃性ゴム組成物を製造する方法につい
て規定するものである。該マスターバッチは、ゴムと膨
脹性黒鉛との混合物からのみ構成されることが重要であ
り、予備練り混練配合中に、軟化剤及び／又は可塑剤を
添加させてはならない。しかし、円滑な予備練り混練を
助ける目的から少量のワックス類等の加工助剤を添加す
ることについては何等妨げるものではない。難燃性ゴム
組成物中の膨脹性黒鉛の配合量は、ゴム１００重量部に
対し、１〜３０重量部である。分散性、難燃性を考慮す
ると５重量部〜２０重量部が好ましい。この膨脹性黒鉛
の添加が１重量部未満では、十分な難燃性が得られず、
３０重量部を越えると、本発明を持ってしても十分な分
散が出来ないため、肌荒れ不良、機械的強度の著しい低
下が発生する。In the present invention, as a means for uniformly dispersing the expandable graphite, a master batch of rubber and the expandable graphite is manufactured in advance by a preliminary kneading and kneading method, and then the master batch and the rubber are kneaded. The present invention also specifies a method for producing a flame-retardant rubber composition in which expandable graphite is uniformly dispersed. It is important that the masterbatch consists only of a mixture of rubber and expandable graphite, and that no softener and / or plasticizer should be added during the pre-kneading compounding. However, addition of a small amount of a processing aid such as wax for the purpose of assisting smooth preliminary kneading and kneading does not hinder at all. The compounding amount of the expandable graphite in the flame-retardant rubber composition is 1 to 30 parts by weight based on 100 parts by weight of the rubber. In consideration of dispersibility and flame retardancy, 5 to 20 parts by weight is preferable. If the amount of the expandable graphite is less than 1 part by weight, sufficient flame retardancy cannot be obtained,
If the amount exceeds 30 parts by weight, sufficient dispersion cannot be achieved even with the present invention, so that rough skin is poor and mechanical strength is significantly reduced.
【００１１】本発明においては、マスターバッチに使用
されるゴムと難燃性ゴム組成物に用いるゴムとは、同種
又は異種のゴムであることを制限をするものではなく、
用途・目的に応じて、使い分ければ良い。In the present invention, the rubber used for the masterbatch and the rubber used for the flame-retardant rubber composition are not limited to the same or different rubbers.
It can be used properly depending on the purpose and purpose.
【００１２】本発明における軟化剤は、特に限定するも
のでは無く、例えば、菜種油、大豆油、綿実油、ひまし
油、あまに油、パインオイル、パインタール等に代表さ
れる植物油系軟化剤やパラフィン系プロセスオイル、ナ
フテン系プロセスオイル、芳香族系プロセスオイル等に
代表される鉱物油系軟化剤等が挙げられる。また、可塑
剤は、特に限定するものではなく、例えば、ジ−（２−
エチルヘキシル）フタレート、ジ−（２−エチルヘキシ
ル）セバケート、ジ−（２−エチルヘキシル）アジペー
ト、ジブチルフタレート、トリ−（２−エチルヘキシ
ル）トリメリテート、トリ・クレジル・ホスフェート等
が挙げられる。さらに、ワックス類は特に限定するもの
ではなく、例えば、パラフィンワックス、木ロウ、蜜ロ
ウ等が挙げられる。[0012] The softener in the present invention is not particularly limited. For example, vegetable oil softeners represented by rapeseed oil, soybean oil, cottonseed oil, castor oil, linseed oil, pine oil, pine tar, etc., and paraffin-based processes. Mineral oil-based softeners represented by oils, naphthene-based process oils, aromatic process oils, and the like. The plasticizer is not particularly limited. For example, di- (2-
Ethylhexyl) phthalate, di- (2-ethylhexyl) sebacate, di- (2-ethylhexyl) adipate, dibutyl phthalate, tri- (2-ethylhexyl) trimellitate, tri-cresyl phosphate, and the like. Further, the wax is not particularly limited, and examples thereof include paraffin wax, wood wax, and beeswax.
【００１３】本発明におけるマスターバッチの製造方法
は、特に限定するものではなく、例えば、混練機器はバ
ンバリーミキサー、インターミックス、ニーダー、オー
プンロール等の混練機器を使用することができる。例え
ば、バンバリーミキサーによる混練の場合は、該混練機
器にゴムを投入し、投入直後に上昇した負荷トルクの動
きに注意し、膨脹性黒鉛の投入と共に一旦上昇したトル
クが再び低下を始め、安定になった段階で混練を止め、
マスターバッチとして取り出す。オープンロールの場合
も、例えばオープンロールでゴムバンドを作り、ロール
上部のバンクが円滑に動いている状態で、所定の膨脹性
黒鉛を徐々に添加し、マスターバッチとして取り出す。
この混練において、混練中のゴムの粘弾性を維持し、膨
脹性黒鉛の均一な分散を行うために、必要に応じて、混
練機器に冷却水を通す等、一般に用いられている混練操
作を行うことができる。The method for producing a master batch in the present invention is not particularly limited. For example, a kneading device such as a Banbury mixer, an intermix, a kneader, or an open roll can be used. For example, in the case of kneading with a Banbury mixer, rubber is charged into the kneading equipment, and the movement of the load torque that has risen immediately after the charging is noticed. Stop kneading when it becomes
Take out as a master batch. Also in the case of an open roll, for example, a rubber band is formed by an open roll, and while the bank at the top of the roll is moving smoothly, predetermined expandable graphite is gradually added and taken out as a master batch.
In this kneading, in order to maintain the viscoelasticity of the rubber during kneading and uniformly disperse the expandable graphite, kneading operations generally used such as passing cooling water through a kneading device are performed as necessary. be able to.
【００１４】本発明における難燃性ゴム組成物の製造
は、混練機器を特に限定するものではなく、例えばマス
ターバッチの製造と同様、一般に用いられているバンバ
リーミキサー、インターミックス、ニーダー、オープン
ロール等の混練機器が使用出来る。また混練法について
も、特に定めるものでは無いが、マスターバッチに用い
たゴムと難燃性ゴム組成物に用いるゴムとの均一なブレ
ンドを図る意味で、出来るだけ初期に両者の混練を完了
させるべく努める、すなわちゴムの素練り時にマスター
バッチも合わせて投入し、混練することが望ましい。The production of the flame-retardant rubber composition in the present invention is not particularly limited to the kneading equipment. For example, similarly to the production of a master batch, generally used Banbury mixers, intermixes, kneaders, open rolls, etc. Kneading equipment can be used. Also, the kneading method is not particularly limited, but in order to achieve a uniform blend of the rubber used for the master batch and the rubber used for the flame-retardant rubber composition, in order to complete the kneading of the two as early as possible. It is desirable to make efforts, that is, to mix and knead the master batch together with the rubber during mastication.
【００１５】本発明においては、得られた難燃性ゴム組
成物は、通常使用される加硫方式ならびに加硫機により
加硫が出来る。In the present invention, the obtained flame-retardant rubber composition can be vulcanized by a commonly used vulcanization method and vulcanizer.
【００１６】本発明では、難燃性ゴム組成物の膨脹性黒
鉛については、その配合量を規定するが、その他の配合
剤について、制限するものでは無く、通常使用されてい
るものが使用出来る。例えば、老化防止剤、補強性充填
剤、加工助剤、加硫剤、加硫促進剤等を添加しても良
い。In the present invention, the compounding amount of the expandable graphite of the flame-retardant rubber composition is specified, but the other compounding agents are not limited, and those commonly used can be used. For example, an anti-aging agent, a reinforcing filler, a processing aid, a vulcanizing agent, a vulcanization accelerator and the like may be added.
【００１７】[0017]
【実施例】以下、本発明を実施例により詳細に説明する
が、これは本発明の理解を助けるための例であり、本発
明の要旨を越えない限りこれら実施例により制限を受け
るものではない。EXAMPLES The present invention will be described in more detail with reference to the following Examples, which are merely examples for assisting the understanding of the present invention, and are not limited by these Examples without departing from the gist of the present invention. .
【００１８】＜押出成形品の評価＞難燃性ゴム組成物を
ブラベンダー社製プラスチコーダー押出機械を用い、５
ｍｍφ口金、スクリュー回転数２０ｒｐｍで棒状に押出
成形し、その成形品の表面状態（表面肌、光沢性）を目
視により評価した。<Evaluation of Extruded Product> The flame-retardant rubber composition was prepared using a plastic coder extruder manufactured by Brabender Co., Ltd.
It was extruded into a rod shape at a diameter of 20 mm and a screw rotation speed of 20 rpm, and the surface state (surface skin, gloss) of the molded product was visually evaluated.
【００１９】＜引張試験＞得られた難燃性ゴム組成物を
三重工業（株）製スチーム加熱式プレス加硫機を用い、
１７０℃×１０分×５０ｋｇ／ｃｍ2で加硫し、厚さ２
ｍｍの試料を得た。この試料を用い、ＪＩＳ Ｋ ６３
０１（１９７５）に準拠し、３号ダンベル、引張速度５
００ｍｍ／分にて、引張強さ（ＴB）、伸び（ＥB）を測
定した。<Tensile test> The obtained flame-retardant rubber composition was subjected to a steam heating press vulcanizer manufactured by Mie Kogyo Co., Ltd.
Vulcanized at 170 ° C. × 10 minutes × 50 kg / cm 2 , thickness 2
mm sample was obtained. Using this sample, JIS K63
01 (1975), No. 3 dumbbell, pulling speed 5
At 00 mm / min, the tensile strength (T B ) and elongation (E B ) were measured.
【００２０】＜難燃性（酸素指数）＞引張試験と同様な
試料を用い、ＪＩＳ Ｋ ７２０１（１９７２）に準拠
して酸素指数を測定した。<Flame Retardancy (Oxygen Index)> Using the same sample as in the tensile test, the oxygen index was measured according to JIS K 7201 (1972).
【００２１】＜表面斑点数＞引張試験と同様な試料を用
い、分散性の不良を示す銀色の斑点の数を１ｃｍ2範囲
で、目視にて測定した。<Number of surface spots> Using the same sample as in the tensile test, the number of silver spots showing poor dispersibility was visually measured within a range of 1 cm 2 .
【００２２】製造例１ マスターバッチの製造 表１に示す配合に従い、オープンロール（東洋精機
（株）製 ８インチロール、回転比；前ロール１５ｒｐ
ｍ／後ロール１７ｒｐｍ）を用い、初めにゴムのバンク
（ゴムの溜まり）を作り、且つバンクのスムースな回転
が続くようロール間隙の調整を行い、次に膨脹性黒煙を
徐々に加えロール温度５０℃で１５分間混練しマスター
バッチを得た。これにより、８種類のマスターバッチを
得た。Production Example 1 Production of Masterbatch According to the composition shown in Table 1, an open roll (8 inch roll manufactured by Toyo Seiki Co., Ltd., rotation ratio; front roll 15 rp)
m / back roll 17 rpm), first make a bank of rubber (rubber pool), and adjust the roll gap so that smooth rotation of the bank continues, and then gradually add inflatable black smoke to roll temperature. The mixture was kneaded at 50 ° C. for 15 minutes to obtain a master batch. Thus, eight types of master batches were obtained.
【００２３】[0023]
【表１】 [Table 1]
【００２４】実施例１ 表２に示す配合に従い、製造例１で製造されたマスター
バッチ−１と各種原料とをオープンロールにて混練し、
難燃性ゴム組成物を得た。この混練は、初めに原料ゴム
をロールに巻き付け、マスターバッチを少量づつ添加し
た後、一旦分出して薄通し作業を行い、次に、表２に示
す各種配合剤を段々と加え、ロール温度５０℃で２０分
間混練し、難燃性ゴム組成物を得た。亜鉛華、加硫促進
剤ＥＴＵについては、ゴム組成物のスコーチ安定性を図
るため、混練作業の最後に添加した。Example 1 According to the composition shown in Table 2, the master batch-1 produced in Production Example 1 and various raw materials were kneaded with an open roll,
A flame-retardant rubber composition was obtained. In this kneading, first, the raw rubber is wound around a roll, a master batch is added little by little, and then once separated and tightly squeezed, and then various compounding ingredients shown in Table 2 are gradually added, and a roll temperature of 50 is added. The mixture was kneaded at 20 ° C for 20 minutes to obtain a flame-retardant rubber composition. Zinc white and the vulcanization accelerator ETU were added at the end of the kneading operation in order to achieve scorch stability of the rubber composition.
【００２５】この難燃性ゴム組成物を用い、押出成形品
の評価、引張試験、表面斑点数、難燃性（酸素指数）等
を測定・評価し、その結果を表２に示した。押出成形品
の表面状態は平滑肌で光沢に優れ、引張試験、表面斑点
数、難燃性（酸素指数）等も満足するものであった。Using this flame-retardant rubber composition, evaluation of extruded products, tensile test, number of surface spots, flame retardancy (oxygen index), etc. were measured and evaluated. The results are shown in Table 2. The surface condition of the extruded product was smooth and excellent in gloss, and satisfied the tensile test, the number of surface spots, the flame retardancy (oxygen index), and the like.
【００２６】[0026]
【表２】 [Table 2]
【００２７】実施例２〜実施例７ 表１、表２に示す配合に従い、実施例１と同様に難燃性
ゴム組成物の製造を行い、押出成形品の評価、引張試
験、表面斑点数、難燃性（酸素指数）等を測定・評価
し、その結果を表２に示した。押出成形品の表面状態は
平滑肌で光沢に優れ、引張試験、表面斑点数、難燃性
（酸素指数）等も満足するものであった。Examples 2 to 7 In accordance with the formulations shown in Tables 1 and 2, a flame-retardant rubber composition was produced in the same manner as in Example 1, and the extruded product was evaluated, a tensile test, the number of surface spots, The flame retardancy (oxygen index) and the like were measured and evaluated, and the results are shown in Table 2. The surface condition of the extruded product was smooth and excellent in gloss, and satisfied the tensile test, the number of surface spots, the flame retardancy (oxygen index), and the like.
【００２８】比較例１、比較例２ 表１、表３に示すように、マスターバッチを用いずに、
実施例１と同様に難燃性ゴム組成物の製造を行い、押出
成形品の評価、引張試験、表面斑点数、難燃性（酸素指
数）等を測定・評価し、その結果を表３に示した。押出
成形品の評価、引張試験、表面斑点数等は満足するもの
が得られなかった。Comparative Examples 1 and 2 As shown in Tables 1 and 3, without using a master batch,
A flame-retardant rubber composition was manufactured in the same manner as in Example 1, and the evaluation of the extruded product, the tensile test, the number of surface spots, and the flame retardancy (oxygen index) were measured and evaluated. The results are shown in Table 3. Indicated. Satisfactory evaluation, tensile test, number of surface spots, etc. of the extruded product were not obtained.
【００２９】[0029]
【表３】 [Table 3]
【００３０】比較例３ 表１、表３の配合に従い、実施例１と同様に難燃性ゴム
組成物の製造を行い、押出成形品の評価、引張試験、表
面斑点数、難燃性（酸素指数）等を測定・評価し、その
結果を表３に示した。難燃性（酸素指数）等は満足する
ものが得られなかった。Comparative Example 3 A flame-retardant rubber composition was produced in the same manner as in Example 1 in accordance with the formulations shown in Tables 1 and 3, and the extruded product was evaluated, a tensile test, the number of surface spots, and the flame retardancy (oxygen Index) and the like were measured and evaluated, and the results are shown in Table 3. No satisfactory flame retardancy (oxygen index) was obtained.
【００３１】比較例４、比較例５ 表１、表３の配合に従い、実施例１と同様に難燃性ゴム
組成物の製造を行い、押出成形品の評価、引張試験、表
面斑点数、難燃性（酸素指数）等を測定・評価し、その
結果を表３に示した。押出成形品の評価、表面斑点数、
引張試験等は満足するものが得られなかった。Comparative Examples 4 and 5 A flame-retardant rubber composition was produced in the same manner as in Example 1 in accordance with the formulations shown in Tables 1 and 3, and the extruded product was evaluated, a tensile test, the number of surface spots, The flammability (oxygen index) and the like were measured and evaluated, and the results are shown in Table 3. Extrusion product evaluation, surface spot count,
Satisfactory tensile tests were not obtained.
【００３２】参考例１、参考例２ 表３の配合に従い、実施例１と同様に難燃性ゴム組成物
の製造を行い、押出成形品の評価、引張試験、表面斑点
数、難燃性（酸素指数）等を測定・評価し、その結果を
表３に示した。難燃性（酸素指数）等は満足するものが
得られなかった。Reference Example 1 and Reference Example 2 According to the composition shown in Table 3, a flame-retardant rubber composition was produced in the same manner as in Example 1, and an extruded product was evaluated, a tensile test, the number of surface spots, and the flame retardancy ( (Oxygen index) and the like were measured and evaluated, and the results are shown in Table 3. No satisfactory flame retardancy (oxygen index) was obtained.
【００３３】[0033]
【発明の効果】以上の説明から明らかなように、本発明
の難燃性ゴム組成物は、押出加工成形において平滑で光
沢のある押出成形品を提供し、また型加硫成形において
も、加硫物の表面に銀色斑点等の荒れのほとんどあるい
は全く認められないものを提供でき、電線・電纜、ホー
ス、ガスケット、シーラント、ゴムパッキン等、平滑な
表面状態や難燃性を必要とする用途に有用である。As is apparent from the above description, the flame-retardant rubber composition of the present invention provides a smooth and glossy extruded product in extrusion molding, and also provides a vulcanization molding in mold vulcanization molding. Can provide a surface with little or no roughness such as silver spots on the surface of the sulphate, and can be used for applications requiring a smooth surface condition and flame retardance, such as electric wires and cables, hoses, gaskets, sealants, and rubber packings. Useful.
Claims (2)
〜２００重量部よりなるマスターバッチを予め製造し、
ゴム１００重量部に対し、膨脹性黒鉛１〜３０重量部に
なるよう該マスターバッチを用いてなることを特徴とす
る難燃性ゴム組成物。An expansible graphite is used for 100 parts by weight of rubber.
Pre-producing a master batch consisting of ~ 200 parts by weight,
A flame-retardant rubber composition comprising using the masterbatch in an amount of 1 to 30 parts by weight of expandable graphite with respect to 100 parts by weight of rubber.
方法。2. A method for producing the flame-retardant rubber composition according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19480496A JP3661285B2 (en) | 1996-07-24 | 1996-07-24 | Flame retardant rubber composition and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19480496A JP3661285B2 (en) | 1996-07-24 | 1996-07-24 | Flame retardant rubber composition and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1036572A true JPH1036572A (en) | 1998-02-10 |
| JP3661285B2 JP3661285B2 (en) | 2005-06-15 |
Family
ID=16330543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19480496A Expired - Fee Related JP3661285B2 (en) | 1996-07-24 | 1996-07-24 | Flame retardant rubber composition and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3661285B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001316525A (en) * | 2000-05-02 | 2001-11-16 | Denki Kagaku Kogyo Kk | Chloroprene rubber composition |
| US7087670B2 (en) | 2000-05-19 | 2006-08-08 | Bayer Aktiengesellschaft | Flame-resistant intumescent mixtures |
| CN104011122A (en) * | 2011-12-29 | 2014-08-27 | 凡世通建筑产品公司 | Roofing membranes with expandable graphite as flame retardant |
| US10415249B2 (en) * | 2014-07-03 | 2019-09-17 | Firestone Building Products Co., LLC | EPDM roofing membranes with expandable graphite as flame retardant |
-
1996
- 1996-07-24 JP JP19480496A patent/JP3661285B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001316525A (en) * | 2000-05-02 | 2001-11-16 | Denki Kagaku Kogyo Kk | Chloroprene rubber composition |
| US7087670B2 (en) | 2000-05-19 | 2006-08-08 | Bayer Aktiengesellschaft | Flame-resistant intumescent mixtures |
| CN104011122A (en) * | 2011-12-29 | 2014-08-27 | 凡世通建筑产品公司 | Roofing membranes with expandable graphite as flame retardant |
| US9611639B2 (en) | 2011-12-29 | 2017-04-04 | Firestone Building Products Co., LLC | Roofing membranes with expandable graphite as flame retardant |
| US10829938B2 (en) | 2011-12-29 | 2020-11-10 | Firestone Building Products Company, Llc | Roofing membranes with expandable graphite as flame retardant |
| US10415249B2 (en) * | 2014-07-03 | 2019-09-17 | Firestone Building Products Co., LLC | EPDM roofing membranes with expandable graphite as flame retardant |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3661285B2 (en) | 2005-06-15 |
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