JP4132111B2 - Adding chemicals when kneading rubber - Google Patents
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- JP4132111B2 JP4132111B2 JP28555696A JP28555696A JP4132111B2 JP 4132111 B2 JP4132111 B2 JP 4132111B2 JP 28555696 A JP28555696 A JP 28555696A JP 28555696 A JP28555696 A JP 28555696A JP 4132111 B2 JP4132111 B2 JP 4132111B2
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【０００１】
【発明の属する技術分野】
本発明はゴム混練り時の配合薬品の投入法およびゴム用配合剤組成物に関する。
【０００２】
【従来の技術】
ゴム製品を製造するとき、原料ゴムに混合して使用される配合薬品の選択いかんがゴム製品の加工性能、製品性能を左右する。原料ゴムの性能を満足させるために配合する基本配合では、配合薬品の種類は５〜６種であるが、実用配合ともなると１０種以上、場合によっては２０種類もの配合薬品を組み合わせることもある。
その配合薬品は、一般にその効果からつぎのように分類されている。すなわち、加硫剤、加硫促進剤、加硫促進助剤、加硫遅延剤、老化防止剤、充填剤、軟化剤、可塑剤、粘着付与剤、滑剤、しゃく解剤、着色剤、発泡剤、硬化剤、分散剤、加工助剤、溶剤などである。
ゴム配合においては、ブロック状ゴムを硫黄、カーボンブラックなどの多くの配合薬品とともにバンバリーミキサーと呼ばれるいる混練ミキサーに投入して混練する。
通常、この混練の際にアロマオイル、スピンドルオイル、溶融ステアリン酸などの液状配合薬品とワックス、老化防止剤、レジンなどの粉状、粒状材料とを別に投入されている。しかしながら、粉状、粒状配合薬品の場合、事前の計量作業やプレブレンド作業が発生する。また、配合投入時に配合薬品が飛散し、そのため作業環境が悪化したり、配合量の精度が悪くなるなど作業上のトラブルが発生して問題がある。
【０００３】
【発明が解決しようとする課題】
本発明が解決しようとする課題は、上述の従来のゴム配合における粉状、粒状配合薬品のゴム混練ミキサーへの投入における問題点を解決することであり、配合薬品の事前計量やプレブレンド作業を削減して配合薬品の飛散をなくし、配合量の精度と作業環境が改善されたゴム混練り時の配合薬品の投入法および新規なゴム用配合剤組成物を提供することである。
【０００４】
【課題を解決するための手段】
本発明者は、前記課題を解決すべく種々の検討を重ねた結果、アロマオイルなどの液状配合薬品にあらかじめ一定量の非液状薬品をスラリー状に混合したものを液状供給装置を用いて投入することにより課題を解決することを見出して、本発明を完成するに至った。
【０００５】
本発明のゴム混練り時の配合薬品の投入法は、ゴム混練りにおいて非液状のゴム用配合剤を液状のゴム用配合薬品によりスラリー状に混合してなるゴム用配合剤組成物をゴム混 練ミキサーに投入することを特徴とする。老化防止剤、および樹脂からなる群から選ばれた少なくとも一種の非液状のゴム用配合剤１００重量部と、パラフィン系オイル、熔融ステアリン酸、オクチルオレートおよびテルペン系オイルからなる群から選ばれた少なくとも一種の液状のゴム用配合薬品５０〜２００重量部からなる。
【０００６】
本発明のゴム用配合剤組成物は、老化防止剤、および樹脂からなる群から選ばれた少なくとも一種の非液状のゴム用配合剤１００重量部と、パラフィン系オイル、熔融ステアリン酸、オクチルオレートおよびテルペン系オイルからなる群から選ばれた少なくとも一種の液状のゴム用配合薬品５０〜２００重量部とからなるスラリー状に混合してなることを特徴とする。
【０００７】
【発明の実施の態様】
本発明のゴム配合薬品の投入法に用いる非液状のゴム用配合剤としては、ＭＢ（２−メルカプトベンズイミダゾール）、ＭＢＺ（２−メルカプトベンズイミダゾール）、ＭＭＢ（２−メルカプトメチルベンズイミダゾール）、ＤＰ（Ｎ，Ｎ’−ジフェニルーｐ−フェニレンジアミン）、ＲＤ（ポリ（２，２，４−トリメチル−１，２−ジヒドロキノリン）、ＮＳ−６（２．２’−メチレンビス（４−メチルー６−ｔｅｒｔ−ブチルフェノール）、６Ｃ（ジメチルブチルーＮ−フェニルーｐ−フェニレンジアミン）などの老化防止剤；アルキルフェノールホルムアルデヒド樹脂、シクロペンタジエン樹脂、キシレン樹脂、アセテレン樹脂、ロジン、テルペン樹脂などの粘着付与剤または接着剤どの樹脂類などがあげられる。
【０００８】
本発明のゴム配合薬品の投入法に用いる液状のゴム用配合薬品としては、アロマオイル、スピンドルオイルなどのパラフィン系オイル、熔融ステアリン酸、テルペン系オイル、オクチルオレートなどがあげられる。
【０００９】
本発明のゴム配合薬品の投入法は、上記の非液状のゴム用配合剤の１種または２種以上を１種または２種以上の液状のゴム用配合薬品にスラリー状態にしたゴム用配合剤組成物を調製し、該組成物を用いて投入する。
非液状のゴム用配合剤を液状のゴム用配合薬品にスラリー状態にしたゴム用配合剤組成物としては、たとえば、老化防止剤溶解アロマオイル、粘着付与剤溶解アロマオイル、老化防止剤溶解スピンドルオイル、粘着付与剤溶解スピンドルオイル、老化防止剤溶解アロマオイル、老化防止剤溶解テルペン系オイルなどが提供できる。
これらのゴム用配合剤組成物の単独または複数を原料ゴムとともにバンバリーミキサーに投入し混練りする。
【００１０】
【実施例】
以下に実施例、比較例を示して本発明を更に詳細に説明する。
【００１１】
実施例１
アロマオイル １００重量部、
テルぺン系オイル １００重量部、
からなる液状のゴム用配合薬品に
老化防止剤（６Ｃ） １００重量部、
からなる非液状のゴム用配合剤をスラリー状に混合してゴム用配合剤組成 物（ａ）を調製した。
【００１２】
実施例２
スピンドルオイル １００重量部、
オクチルオレート １００重量部、
からなる液状のゴム用配合薬品に
老化防止剤（６Ｃ） １００重量部、からなる非液状のゴム用配合剤をスラリー状に混合してゴム用配合剤組成物（ｂ）を調製した。
【００１３】
実施例３
アロマオイル １００重量部、
溶融ステアリン酸 １００重量部、
からなる液状のゴム用配合薬品に
老化防止剤（６Ｃ） １００重量部、
からなる非液状のゴム用配合剤をスラリー状に混合してゴム用配合剤組成 物（ｃ）を調製した。
【００１４】
実施例４
テルペン系オイル １００重量部、
からなる液状のゴム用配合薬品に
樹脂（シクロペンジエン樹脂） ２００重量部、
からなる非液状のゴム用配合剤をスラリー状に混合してゴム用配合剤組成 物（ｄ）を調製した。
【００１５】
比較例１
テルペン系オイル ４０重量部、
からなる液状のゴム用配合薬品に
樹脂（シクロペンジエン樹脂） １００重量部、
からなる非液状のゴム用配合剤を混合してゴム配合剤組成物を調製した。
得られた組成物は湿った粉状であった。
【００１６】
比較例２
テルペン系オイル ２０重量部、
からなる液状のゴム用配合薬品に
樹脂（シクロペンジエン樹脂） １００重量部、
からなる非液状のゴム用配合剤を混合してゴム配合剤組成物を調製した。
得られた組成物は液状とならず粉状であった。
【００１７】
実施例、比較例で得られた配合剤組成物のスラリー性をつぎの基準で評価した。結果を表１に示す。
○：非液状のゴム用配合剤が液状のゴム用配合薬品の中に均一に分散してスラリー液状となる。
×：非液状のゴム用配合剤と液状のゴム用配合物が分離したままで均一な液状とならない。
【００１８】
【表１】
これらのゴム用配合剤組成物を用いて、本発明の混練時のゴム配合剤の投入法による未加硫ゴムシートの作製を図１に基づいて説明する。
１はバンバリーミキサーであり、このチャンバー２内にＡより原料ゴム１２０重量部、混合槽Ｂから調製されたゴム用配合剤組成物を１９．２重量部をバンバリーミキサー１に投入して混練する。バンバリーミキサーの直下には平行なロール６、７からなるロール機構８が設置され、この機構８はバンバリーミキサー１から排出されたゴムを例えば８ｍｍ程度扱い易い肉厚のゴムシート９とする。
【００２０】
【発明の効果】
本発明のゴム配合薬品の投入法により、従来の混練りミキサーへのゴム配合薬品投入時の粉状、粒状配合薬品の飛散、そのための作業環境が悪化が解消された。また、配合薬品の固化によるトラブルがなくなり、配合薬品の配合量の精度がよくなり、品質の安定したゴム製品が提供できるようになった。
【図面の簡単な説明】
【図１】本発明のゴム配合薬品の投入法を説明する図である。
【符号の説明】
１ 混練ミキサー
２ チャンバー
４、５ ローター
６、７ ゴムロール
Ａ、原料ゴム
Ｂ，混合槽（液状供給装置）
８、ロール機構
９、ゴムシート
４４、溜まったゴムバンク
１１、コンベヤー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for charging compounding chemicals during rubber kneading and a compounding composition for rubber.
[0002]
[Prior art]
When manufacturing rubber products, the choice of compounding chemicals used by mixing with the raw rubber affects the processing performance and product performance of the rubber products. In the basic composition blended to satisfy the performance of the raw rubber, there are 5 to 6 kinds of compounded chemicals. However, when it is a practical composition, 10 or more kinds, and sometimes 20 kinds of compounded chemicals may be combined.
The compounding chemicals are generally classified as follows based on their effects. Vulcanizing agents, vulcanization accelerators, vulcanization acceleration aids, vulcanization retarders, anti-aging agents, fillers, softeners, plasticizers, tackifiers, lubricants, peptizers, colorants, foaming agents , Curing agents, dispersants, processing aids, solvents and the like.
In rubber compounding, block rubber is put into a kneading mixer called a Banbury mixer together with many compounding chemicals such as sulfur and carbon black and kneaded.
Normally, liquid compounding chemicals such as aroma oil, spindle oil, and molten stearic acid and powdered and granular materials such as wax, anti-aging agent, and resin are charged separately during the kneading. However, in the case of powdered and granular compounded chemicals, prior weighing work and pre-blending work are required. In addition, the compounded chemicals are scattered at the time of compounding, which causes problems such as a working environment that deteriorates and accuracy of the compounding amount deteriorates.
[0003]
[Problems to be solved by the invention]
The problem to be solved by the present invention is to solve the problems in the introduction of powdered and granular compounded chemicals into the rubber kneading mixer in the above-mentioned conventional rubber compounding. An object of the present invention is to provide a new rubber compounding agent composition and a method for charging compounding chemicals during rubber kneading, which eliminates scattering of compounding chemicals and improves the accuracy of the compounding amount and the working environment.
[0004]
[Means for Solving the Problems]
As a result of repeating various studies to solve the above problems, the present inventor uses a liquid supply device to add a liquid compounded chemical such as aroma oil, in which a predetermined amount of a non-liquid chemical is mixed in a slurry state. As a result, the present inventors have found that the problem can be solved and have completed the present invention.
[0005]
The method of adding the compounding chemical at the time of rubber kneading of the present invention is as follows: a rubber compounding composition obtained by mixing a non-liquid rubber compounding agent in a slurry state with a liquid rubber compounding chemical in rubber kneading. It is characterized by being put into a kneading mixer . - aging inhibitor, and at least a rubber compounding agent for 100 parts by weight of the non-liquid one selected from the group consisting of contact and the resin is selected from the group consisting of paraffin oil, melted stearate, octyl oleate and terpene oil Further, it comprises 50 to 200 parts by weight of at least one liquid rubber compounding chemical.
[0006]
Rubber compounding agent composition of the present invention, anti-aging agents, contact and a rubber compounding agent for 100 parts by weight of at least one non-liquid selected from the group consisting of resin, paraffinic oils, molten stearic acid, octyl oleate And at least one liquid rubber compounding chemical selected from the group consisting of terpene oils and mixed in a slurry form comprising 50 to 200 parts by weight.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Non-liquid rubber compounding agents used in the method of charging the rubber compounding chemical of the present invention include MB (2-mercaptobenzimidazole), MBZ (2-mercaptobenzimidazole), MMB (2-mercaptomethylbenzimidazole), DP (N, N′-diphenyl-p-phenylenediamine), RD (poly (2,2,4-trimethyl-1,2-dihydroquinoline), NS-6 (2.2′-methylenebis (4-methyl-6-tert) - butylphenol), 6C (antioxidant such dimethylbutyl over N- phenyl-p- phenylenediamine); a Le kills phenol formaldehyde resins, cyclopentadiene resins, xylene resins, Aseteren resins, rosin, tackifier or adhesive, such as terpene resins etc. agents which resins, and the like.
[0008]
Examples of the liquid rubber compounding chemical used in the method of introducing the rubber compounding chemical of the present invention include paraffinic oils such as aroma oil and spindle oil, molten stearic acid, terpene oil, and octyl oleate.
[0009]
The method of charging the rubber compounding chemical according to the present invention includes a rubber compounding agent in which one or more of the above non-liquid rubber compounding agents are slurried into one or two or more liquid rubber compounding chemicals. A composition is prepared and charged using the composition.
The rubber compounding agent composition of the rubber compounding agent for non-liquid and slurried state Rubber compounding chemicals liquid, for example, - aging inhibitor dissolved aromatic oil, tackifiers dissolved aromatic oil, - aging inhibitor dissolved spindle oil, tackifiers dissolved spindle oil, - aging inhibitor dissolved aromatic oils, such as antioxidant dissolved terpene oil can be provided.
One or more of these compounding compositions for rubber are introduced into a Banbury mixer together with the raw rubber and kneaded.
[0010]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.
[0011]
Example 1
100 parts by weight of aroma oil,
100 parts by weight of terpene oil,
100 parts by weight of an anti-aging agent (6C) in a liquid rubber compounding chemical comprising
A non-liquid rubber compounding agent comprising the above was mixed in a slurry to prepare a rubber compounding agent composition (a).
[0012]
Example 2
100 parts by weight of spindle oil,
100 parts by weight of octyl oleate ,
A rubber compounding agent composition (b) was prepared by mixing 100 parts by weight of an anti-aging agent (6C) in a slurry state with a liquid compounding compound for rubber.
[0013]
Example 3
100 parts by weight of aroma oil,
100 parts by weight of molten stearic acid,
100 parts by weight of an anti-aging agent (6C) in a liquid rubber compounding chemical comprising
A non-liquid rubber compounding agent comprising the above was mixed in a slurry to prepare a rubber compounding agent composition (c).
[0014]
Example 4
100 parts by weight of terpene oil,
200 parts by weight of a resin (cyclopentadiene resin) in a liquid rubber compounding chemical comprising
A non-liquid rubber compounding agent comprising the above was mixed in a slurry to prepare a rubber compounding agent composition (d).
[0015]
Comparative Example 1
40 parts by weight of terpene oil,
100 parts by weight of resin (cyclopentadiene resin) in a liquid rubber compounding chemical consisting of
A rubber compounding agent composition was prepared by mixing a non-liquid compounding agent for rubber.
The resulting composition was a wet powder.
[0016]
Comparative Example 2
20 parts by weight of terpene oil,
100 parts by weight of resin (cyclopentadiene resin) in a liquid rubber compounding chemical consisting of
A rubber compounding agent composition was prepared by mixing a non-liquid compounding agent for rubber.
The obtained composition was not liquid and was powdery.
[0017]
The slurry properties of the compounding agent compositions obtained in Examples and Comparative Examples were evaluated according to the following criteria. The results are shown in Table 1.
○: A non-liquid rubber compounding agent is uniformly dispersed in a liquid rubber compounding chemical to become a slurry liquid.
X: The non-liquid rubber compounding agent and the liquid rubber compound remain separated and do not become a uniform liquid.
[0018]
[Table 1]
The production of an unvulcanized rubber sheet by using the rubber compounding agent composition according to the present invention by the method of adding the rubber compounding agent during kneading will be described with reference to FIG.
1 is a Banbury mixer, and 120 parts by weight of the raw rubber from A and 19.2 parts by weight of the rubber compounding agent composition prepared from the mixing tank B are put into the Banbury mixer 1 and kneaded. A
[0020]
【The invention's effect】
According to the method of introducing the rubber compounding chemical of the present invention, the powdery and granular compound chemicals scattered when the rubber compounding chemical is charged into the conventional kneading mixer, and the working environment therefor have been eliminated. In addition, troubles due to solidification of compounded chemicals are eliminated, accuracy of the compounded chemicals is improved, and rubber products with stable quality can be provided.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view for explaining a method of charging a rubber compounding chemical of the present invention.
[Explanation of symbols]
1 Kneading
8,
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28555696A JP4132111B2 (en) | 1996-10-28 | 1996-10-28 | Adding chemicals when kneading rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28555696A JP4132111B2 (en) | 1996-10-28 | 1996-10-28 | Adding chemicals when kneading rubber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10128741A JPH10128741A (en) | 1998-05-19 |
| JP4132111B2 true JP4132111B2 (en) | 2008-08-13 |
Family
ID=17693082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28555696A Expired - Lifetime JP4132111B2 (en) | 1996-10-28 | 1996-10-28 | Adding chemicals when kneading rubber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4132111B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4402352B2 (en) * | 2002-12-24 | 2010-01-20 | 住友ゴム工業株式会社 | Extruder and extrusion method |
| CN102414268B (en) * | 2009-04-21 | 2015-04-01 | 株式会社普利司通 | A process for producing a resin-extended isoprene rubber, rubber composition obtained by the process, and a pneumatic tire |
| US20120108732A1 (en) * | 2009-04-28 | 2012-05-03 | Bridgestone Corporation | Dispersion liquid of chemical for rubbers, method for producing same, rubber wet master batch containing chemical for rubbers, rubber composition, and tire |
| EP3622843B1 (en) * | 2018-09-13 | 2023-01-25 | The Goodyear Tire & Rubber Company | Resin modified oil extended rubber |
-
1996
- 1996-10-28 JP JP28555696A patent/JP4132111B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10128741A (en) | 1998-05-19 |
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