JP2002146036A - Rubber composition for tire, method for producing the composition, and tire - Google Patents
Rubber composition for tire, method for producing the composition, and tireInfo
- Publication number
- JP2002146036A JP2002146036A JP2000342150A JP2000342150A JP2002146036A JP 2002146036 A JP2002146036 A JP 2002146036A JP 2000342150 A JP2000342150 A JP 2000342150A JP 2000342150 A JP2000342150 A JP 2000342150A JP 2002146036 A JP2002146036 A JP 2002146036A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- tire
- butadiene rubber
- composition
- kneading
- 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.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 35
- 239000005060 rubber Substances 0.000 title claims abstract description 35
- 239000000203 mixture Substances 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229920002857 polybutadiene Polymers 0.000 claims abstract description 38
- 239000005062 Polybutadiene Substances 0.000 claims abstract description 37
- 238000004898 kneading Methods 0.000 claims abstract description 22
- 239000012763 reinforcing filler Substances 0.000 claims abstract description 15
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 14
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 14
- 229920001194 natural rubber Polymers 0.000 claims abstract description 14
- 229920003051 synthetic elastomer Polymers 0.000 claims description 9
- 239000005061 synthetic rubber Substances 0.000 claims description 9
- 150000001993 dienes Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000006229 carbon black Substances 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 10
- 230000020169 heat generation Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- 229920000459 Nitrile rubber Polymers 0.000 description 3
- 239000003963 antioxidant agent Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 2
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000008117 stearic acid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- GPGYUCLLCSXTQN-UHFFFAOYSA-N (4-anilinophenyl)-(4-methylpentan-2-yl)azanium;octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(O)=O.C1=CC(NC(C)CC(C)C)=CC=C1NC1=CC=CC=C1 GPGYUCLLCSXTQN-UHFFFAOYSA-N 0.000 description 1
- OWRCNXZUPFZXOS-UHFFFAOYSA-N 1,3-diphenylguanidine Chemical compound C=1C=CC=CC=1NC(=N)NC1=CC=CC=C1 OWRCNXZUPFZXOS-UHFFFAOYSA-N 0.000 description 1
- 102100039851 DNA-directed RNA polymerases I and III subunit RPAC1 Human genes 0.000 description 1
- 101710112289 DNA-directed RNA polymerases I and III subunit RPAC1 Proteins 0.000 description 1
- 101001024616 Homo sapiens Neuroblastoma breakpoint family member 9 Proteins 0.000 description 1
- 102100037013 Neuroblastoma breakpoint family member 9 Human genes 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- -1 for example Polymers 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、タイヤ用ゴム組成
物の製造方法、タイヤ用ゴム組成物、およびタイヤに関
し、とりわけ、タイヤの低発熱性およびグリップ性能を
維持しつつ、耐摩耗性能を向上させうるタイヤ用ゴム組
成物の製造方法、タイヤ用ゴム組成物、およびこの組成
物をトレッドゴムに用いたタイヤに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a rubber composition for a tire, a rubber composition for a tire, and a tire, and more particularly, to improving abrasion resistance while maintaining low heat build-up and grip performance of the tire. The present invention relates to a method for producing a rubber composition for a tire, a rubber composition for a tire, and a tire using the composition for a tread rubber.
【０００２】[0002]
【従来の技術】従来より、ゴム補強用充填剤としては、
高い補強性と優れた耐摩耗性能を付与するカーボンブラ
ックが多く用いられている。空気入りタイヤの耐摩耗性
能をより大きく向上させるためには、カーボンブラック
の充填量をより多くすることや、より粒子径の小さいカ
ーボンブラックを使用することが考えられる。しかし、
いずれの場合においてもカーボンブラックによるヒステ
リシスロスが大きくなり、発熱性が高くなる。2. Description of the Related Art Conventionally, fillers for reinforcing rubber have been:
Carbon black, which provides high reinforcing properties and excellent wear resistance, is widely used. In order to further improve the abrasion resistance of the pneumatic tire, it is conceivable to increase the filling amount of carbon black or use carbon black having a smaller particle diameter. But,
In either case, the hysteresis loss due to carbon black increases, and the heat buildup increases.
【０００３】一方、低発熱性およびグリップ性能と耐摩
耗性能とを両立させる充填剤として、含水ケイ酸が知ら
れている。しかし、含水ケイ酸は、同程度の比表面積を
有するカーボンブラックと比較してゴム組成物の貯蔵弾
性率が小さく、そのため、グリップ性能を低下させる。
貯蔵弾性率を高める方法としては、含水ケイ酸の増量ま
たは比表面積の増大などが考えられるが、これらの方法
では発熱性が高くなる。On the other hand, hydrated silicic acid is known as a filler which achieves both low heat build-up, grip performance and wear resistance. However, hydrated silicic acid has a lower storage modulus of the rubber composition than carbon black having a similar specific surface area, and therefore lowers grip performance.
As a method for increasing the storage elastic modulus, an increase in the amount of hydrous silicic acid or an increase in the specific surface area can be considered, but these methods increase heat generation.
【０００４】これらの問題点を解決すべく、従来から種
々の提案がなされているが、発熱性、グリップ性能およ
び耐摩耗性能のバランスが高度にとれたゴム組成物は、
いまだに存在しないのが現状である。[0004] Various proposals have been made to solve these problems, but a rubber composition having a high balance between heat generation, grip performance and abrasion resistance has been proposed.
At present it does not yet exist.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、このような
状況下で、タイヤの低発熱性およびグリップ性能を維持
しつつ、耐摩耗性能を向上させうるタイヤ用ゴム組成物
の製造方法、タイヤ用ゴム組成物、およびこの組成物を
用いたタイヤを提供することを目的とする。SUMMARY OF THE INVENTION The present invention provides a method of producing a rubber composition for a tire capable of improving abrasion resistance while maintaining low heat build-up and grip performance of the tire under such circumstances. It is an object to provide a rubber composition for tires and a tire using the composition.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、混練り工
程においてブタジエンゴムの混入時間を遅らせる手法に
より、ブタジエンゴム中に含まれる補強用充填剤量を少
なくすることで、ブタジエンゴムのエントロピー変化を
小さくし、かつブタジエンゴムを適度に分散させること
で、ブタジエンゴムのリニアな構造に由来する耐摩耗性
能の良さを最大限に生かすことができ、低発熱性および
グリップ性能を維持しつつ、耐摩耗性能を向上させうる
ことを見出した。Means for Solving the Problems The inventors of the present invention reduced the amount of reinforcing filler contained in butadiene rubber by a method of delaying the mixing time of butadiene rubber in the kneading step, thereby increasing the entropy of butadiene rubber. By reducing the change and dispersing the butadiene rubber appropriately, it is possible to make the most of the good wear resistance derived from the linear structure of the butadiene rubber, while maintaining low heat generation and grip performance, It has been found that the wear resistance performance can be improved.
【０００７】すなわち、本発明は、（Ａ）天然ゴムおよ
び／またはブタジエンゴム以外のジエン系合成ゴム、
（Ｂ）ブタジエンゴム、ならびに（Ｃ）補強用充填剤を
含有するタイヤ用ゴム組成物の混練り工程において、ま
ず、天然ゴムおよび／またはブタジエンゴム以外のジエ
ン系合成ゴム（Ａ）を混練りし、ついで、ブタジエンゴ
ム（Ｂ）および補強用充填剤（Ｃ）を同時に混入し、ま
たは、補強用充填剤（Ｃ）を混入したのちにブタジエン
ゴム（Ｂ）を混入し、かつ、ブタジエンゴム（Ｂ）を、
天然ゴムおよび／またはブタジエンゴム以外のジエン系
合成ゴム（Ａ）の混練り開始後、全混練り時間の９０％
までの時間内に混入することを特徴とするタイヤ用ゴム
組成物の製造方法、前記の製造方法によって得られるタ
イヤ用ゴム組成物および前記のゴム組成物をトレッドに
用いたタイヤに関する。That is, the present invention provides (A) a diene-based synthetic rubber other than natural rubber and / or butadiene rubber;
In the kneading step of (B) butadiene rubber and (C) a rubber composition for a tire containing a reinforcing filler, first, a diene-based synthetic rubber (A) other than natural rubber and / or butadiene rubber is kneaded. Then, butadiene rubber (B) and reinforcing filler (C) are mixed at the same time, or butadiene rubber (B) is mixed after reinforcing filler (C) is mixed, and butadiene rubber (B) is mixed. ),
90% of the total kneading time after the start of kneading the diene-based synthetic rubber (A) other than natural rubber and / or butadiene rubber
The present invention relates to a method for producing a rubber composition for a tire, wherein the rubber composition is mixed within the time until the above, a rubber composition for a tire obtained by the above-mentioned production method, and a tire using the rubber composition for a tread.
【０００８】[0008]
【発明の実施の形態】本発明においては、ゴム成分とし
て、天然ゴムおよび／またはブタジエンゴム以外のジエ
ン系合成ゴム（以下、「天然ゴムなど」という）（Ａ）
ならびにブタジエンゴム（Ｂ）を用いる。DETAILED DESCRIPTION OF THE INVENTION In the present invention, as a rubber component, a diene-based synthetic rubber other than natural rubber and / or butadiene rubber (hereinafter referred to as "natural rubber") (A)
And butadiene rubber (B).
【０００９】ブタジエンゴム以外のジエン系合成ゴムと
しては、たとえば、スチレン−ブタジエンゴム（ＳＢ
Ｒ）、イソプレン合成ゴム（ＩＲ）、アクリロニトリル
−ブタジエンゴム（ＮＢＲ）、イソブチレン−イソプレ
ンゴム（ＩＩＲ）、クロロプレンゴム（ＣＲ）などがあ
げられ、単独で、または２種以上を組み合わせて用いる
ことができる。As a diene-based synthetic rubber other than butadiene rubber, for example, styrene-butadiene rubber (SB
R), isoprene synthetic rubber (IR), acrylonitrile-butadiene rubber (NBR), isobutylene-isoprene rubber (IIR), chloroprene rubber (CR), etc., and can be used alone or in combination of two or more. .
【００１０】ブタジエンゴム（Ｂ）としては、各種ブタ
ジエンゴムを用いることができる。ブタジエンゴム
（Ｂ）の配合量は、天然ゴムなど（Ａ）との合計量の好
ましくは１〜５０重量％、より好ましくは１０〜３０重
量％とすることができる。ブタジエンゴム（Ｂ）が１重
量％未満では耐摩耗性能が低下する傾向があり、５０重
量％以上では発熱性が高くなる傾向がある。Various butadiene rubbers can be used as the butadiene rubber (B). The compounding amount of the butadiene rubber (B) can be preferably 1 to 50% by weight, more preferably 10 to 30% by weight, based on the total amount of the butadiene rubber (A) and the like. If the butadiene rubber (B) is less than 1% by weight, the abrasion resistance tends to decrease, and if it is 50% by weight or more, the heat buildup tends to increase.
【００１１】本発明においては、補強用充填剤（Ｃ）を
用いる。補強用充填剤（Ｃ）としては、従来タイヤ用ゴ
ム組成物において慣用されるもののなかから任意に選択
して用いることができるが、主としてカーボンブラック
やシリカ粒子が好ましく、とくにカーボンブラックが好
ましい。In the present invention, a reinforcing filler (C) is used. The reinforcing filler (C) can be arbitrarily selected from those conventionally used in rubber compositions for tires, and is preferably mainly carbon black or silica particles, and particularly preferably carbon black.
【００１２】前記カーボンブラックのチッ素吸着比表面
積は８０〜２８０ｍ2／ｇであることが好ましい。カー
ボンブラックのチッ素吸着比表面積が８０ｍ2／ｇ未満
では耐摩耗性能が低下する傾向があり、２８０ｍ2／ｇ
をこえると発熱性が高くなる傾向がある。The carbon black preferably has a nitrogen adsorption specific surface area of 80 to 280 m 2 / g. If the nitrogen adsorption specific surface area of the carbon black is less than 80 m 2 / g, the abrasion resistance tends to decrease, and 280 m 2 / g
Exceeding the range tends to increase the heat buildup.
【００１３】前記シリカのチッ素吸着比表面積は１００
〜２８０ｍ2／ｇであることが好ましい。シリカのチッ
素吸着比表面積が１００ｍ2／ｇ未満では耐摩耗性能が
低下する傾向があり、２８０ｍ2／ｇをこえると発熱性
が高くなる傾向がある。The silica has a nitrogen adsorption specific surface area of 100.
It is preferably from 〜280 m 2 / g. If the nitrogen adsorption specific surface area of silica is less than 100 m 2 / g, the abrasion resistance tends to decrease, and if it exceeds 280 m 2 / g, the heat generation tends to increase.
【００１４】補強用充填剤（Ｃ）の配合量は、天然ゴム
など（Ａ）とブタジエンゴム（Ｂ）の合計量１００重量
部に対して、好ましくは２０〜２００重量部、より好ま
しくは５０〜１００重量部とすることができる。補強用
充填剤（Ｃ）の配合量が２０重量部未満では耐摩耗性能
が低下する傾向があり、２００重量部をこえると発熱性
が高くなる傾向がある。本発明においては（Ｃ）成分の
補強用充填剤は単独で用いてもよく、または２種以上組
み合わせて用いてもよい。The amount of the reinforcing filler (C) is preferably 20 to 200 parts by weight, more preferably 50 to 200 parts by weight, based on 100 parts by weight of the total amount of the natural rubber (A) and the butadiene rubber (B). It can be 100 parts by weight. If the amount of the reinforcing filler (C) is less than 20 parts by weight, the abrasion resistance tends to decrease, and if it exceeds 200 parts by weight, the heat generation tends to increase. In the present invention, the reinforcing filler of the component (C) may be used alone or in combination of two or more.
【００１５】本発明のタイヤ用ゴム組成物の製造方法に
おいては、まず、天然ゴムなど（Ａ）を混練りし、つぎ
に、ブタジエンゴム（Ｂ）および補強用充填剤（Ｃ）を
混入し、混練りする。In the method for producing a rubber composition for a tire according to the present invention, (A) such as a natural rubber is first kneaded, and then a butadiene rubber (B) and a reinforcing filler (C) are mixed. Knead.
【００１６】ブタジエンゴム（Ｂ）は、天然ゴムなど
（Ａ）の混練り開始後、全混練り時間の９０％まで、好
ましくは１０〜９０％、より好ましくは４０〜８０％の
時間内に混入する。ここで、全混練り時間とは、加硫剤
や加硫促進剤などの加硫系材料を混入したのちの混練り
時間を除く混練り時間である。全混練り時間を仮に１０
分間とすると、ブタジエンゴム（Ｂ）の混入時期は、好
ましくは１〜９分後、より好ましくは４〜８分後であ
る。１分後よりも早く混入すると耐摩耗性能が向上しに
くく、逆に９分を過ぎてから混入すると低発熱性、グリ
ップ性能および耐摩耗性能がいずれも低下する傾向があ
る。The butadiene rubber (B) is mixed up to 90% of the total kneading time, preferably 10 to 90%, more preferably 40 to 80% after the kneading of the natural rubber or the like (A) is started. I do. Here, the total kneading time is a kneading time excluding a kneading time after mixing a vulcanizing material such as a vulcanizing agent or a vulcanization accelerator. Total kneading time is 10
In terms of minutes, the mixing time of the butadiene rubber (B) is preferably after 1 to 9 minutes, more preferably after 4 to 8 minutes. If it is mixed more than 1 minute later, the abrasion resistance performance is hardly improved. Conversely, if mixed after 9 minutes, the low heat build-up, grip performance and abrasion resistance tend to decrease.
【００１７】補強用充填剤（Ｃ）は、ブタジエンゴム
（Ｂ）と同時に混入することができ、また、ブタジエン
ゴム（Ｂ）を混入する前に混入することができる。The reinforcing filler (C) can be mixed at the same time as the butadiene rubber (B), or can be mixed before the butadiene rubber (B) is mixed.
【００１８】なお、本発明のタイヤ用ゴム組成物には前
記成分の他に、ゴム工業で通常使用されている各種薬
品、たとえば硫黄などの加硫剤、各種加硫促進剤、各種
軟化剤、各種老化防止剤、酸化亜鉛、ステアリン酸、酸
化防止剤、オゾン劣化防止剤などの添加剤を配合するこ
とができる。The rubber composition for a tire of the present invention contains, in addition to the above components, various chemicals usually used in the rubber industry, for example, a vulcanizing agent such as sulfur, various vulcanization accelerators, various softening agents, Additives such as various antioxidants, zinc oxide, stearic acid, antioxidants, and antiozonants can be added.
【００１９】本発明のタイヤは、本発明のゴム組成物を
用いて、通常の方法によって製造される。すなわち、必
要に応じて前記各種薬品を配合した本発明のゴム組成物
を、未加硫の段階でトレッドの形状に押し出し加工す
る。得られた未加硫ゴムをトレッドに用い、タイヤ成型
機上にて通常の方法にて未加硫タイヤを成形する。この
未加硫タイヤを加硫機中で加熱・加圧してタイヤを得
る。The tire of the present invention is produced by a usual method using the rubber composition of the present invention. That is, the rubber composition of the present invention containing the various chemicals as necessary is extruded into a tread shape at an unvulcanized stage. Using the obtained unvulcanized rubber as a tread, an unvulcanized tire is molded by a usual method on a tire molding machine. The unvulcanized tire is heated and pressed in a vulcanizer to obtain a tire.
【００２０】このようにして得られた本発明のタイヤ
は、低発熱性、グリップ性能および耐摩耗性能などのバ
ランスに優れるものである。The tire of the present invention thus obtained is excellent in balance between low heat build-up, grip performance and wear resistance.
【００２１】[0021]
【実施例】以下、本発明を実施例に基づいて具体的に説
明するが、これは本発明の目的を限定するものではな
い。EXAMPLES Hereinafter, the present invention will be described specifically with reference to Examples, but this does not limit the purpose of the present invention.
【００２２】実施例１〜４および比較例１〜２ 混練り機は１．７Ｌバンバリー型ミキサーを用いた。配
合内容を表１に示す。また、各例の混練りパターン（各
薬品のバンバリー型ミキサーへの混入時間）を表２に示
す。Examples 1-4 and Comparative Examples 1-2 As a kneader, a 1.7 L Banbury type mixer was used. The composition is shown in Table 1. Table 2 shows the kneading patterns (mixing time of each chemical into the Banbury mixer) of each example.
【００２３】比較例１では、まず、ブタジエンゴムおよ
び天然ゴムの予備練りを１分間行なった。予備練り後、
ラムを上昇させて、硫黄および加硫促進剤以外の各種材
料を投入し、ラムを下降させて混練りを行ない、途中、
混練り開始後３分３０秒から４分までの３０秒間クリー
ニングを実施し、トータル５分で混練りを終えた。In Comparative Example 1, first, butadiene rubber and natural rubber were preliminarily kneaded for 1 minute. After preliminary kneading,
Raise the ram, add various materials other than sulfur and vulcanization accelerator, lower the ram and knead,
Cleaning was performed for 30 seconds from 3 minutes 30 seconds to 4 minutes after the start of kneading, and kneading was completed in a total of 5 minutes.
【００２４】実施例１〜４および比較例２では、比較例
１をもとに、表２にしたがってブタジエンゴムのバンバ
リー型ミキサーへの混入時間を遅らせて混練りを行なっ
た。In Examples 1 to 4 and Comparative Example 2, kneading was carried out on the basis of Comparative Example 1 by delaying the mixing time of butadiene rubber into the Banbury mixer according to Table 2.
【００２５】これらの配合物を１７０℃で２０分間プレ
ス加硫して加硫ゴムを得、これらについて以下に示す各
特性の試験を行なった。These compounds were press-vulcanized at 170 ° C. for 20 minutes to obtain vulcanized rubbers, which were tested for the following properties.
【００２６】以下に、実施例および比較例で用いた薬品
について説明する。 ブタジエンゴム：ＪＳＲ（株）製のＢＲ１５０Ｂ 天然ゴム：テックビーハング社製のＲＳＳ＃３ カーボンブラック：昭和キャボット（株）製のショウブ
ラックＮ３７５（チッ素吸着比表面積：９０ｍ2／ｇ） アロマオイル：（株）ジャパンエナジー製のＪＯＭＯプ
ロセスＸ１４０ 老化防止剤：大内新興化学工業（株）製のノクラック６
Ｃ （Ｎ−（１，３−ジメチルブチル）−Ｎ’−フェニル−
ｐ−フェニレンジアミン） ステアリン酸：日本油脂（株）製のステアリン酸 酸化亜鉛：三井金属鉱業（株）製の亜鉛華１号 硫黄：鶴見化学（株）製の粉末硫黄 加硫促進剤：大内新興化学工業（株）製のノクセラーＤ （Ｎ，Ｎ’−ジフェニルグアニジン）Hereinafter, the chemicals used in Examples and Comparative Examples will be described. Butadiene rubber: BR150B manufactured by JSR Corporation Natural rubber: RSS # 3 manufactured by Techbee Hang Co., Ltd. Carbon black: Show black N375 manufactured by Showa Cabot Co., Ltd. (nitrogen adsorption specific surface area: 90 m 2 / g) Aroma oil: JOMO Process X140 manufactured by Japan Energy Co., Ltd. Antioxidant: Nocrack 6 manufactured by Ouchi Shinko Chemical Industry Co., Ltd.
C (N- (1,3-dimethylbutyl) -N′-phenyl-
(p-phenylenediamine) Stearic acid: Stearic acid manufactured by NOF CORPORATION Zinc oxide: Zinc flower No. 1 manufactured by Mitsui Mining & Smelting Co., Ltd. Sulfur: Powdered sulfur manufactured by Tsurumi Chemical Co., Ltd. Vulcanization accelerator: Ouchi Noxeller D (N, N'-diphenylguanidine) manufactured by Shinko Chemical Industry Co., Ltd.
【００２７】以下に、各特性の評価方法について説明す
る。 （１）ドライグリップ性能 前記加硫ゴムをトレッドに有するサイズ１９５／６５Ｒ
１５のタイヤを常法により作製した。このタイヤを用
い、ドライアスファルト路面にて実車走行を行なった。
その際の操舵時の操縦安定性をテストドライバーが評価
し、比較例１を１００として指数表示した。数値が大き
いほどドライグリップ性能（ドライ路面におけるグリッ
プ性能）が高いことを示す。Hereinafter, a method for evaluating each characteristic will be described. (1) Dry grip performance Size 195 / 65R having the vulcanized rubber in the tread
Fifteen tires were produced by a conventional method. Using these tires, the vehicle was driven on a dry asphalt road.
The steering stability at the time of steering at that time was evaluated by a test driver, and Comparative Example 1 was set to 100 and displayed as an index. The larger the value, the higher the dry grip performance (grip performance on dry road surface).
【００２８】（２）ウェットグリップ性能 ウェットグリップ性能（ウェット路面におけるグリップ
性能）はブリティッシュスタンダードポータブルスキッ
ドテスター（スタンレイロンドン社製）を用いて測定
し、比較例１を１００として指数表示した。数値が大き
いほどウェットグリップ性能が高いことを示す。(2) Wet grip performance Wet grip performance (grip performance on wet road surface) was measured using a British Standard Portable Skid Tester (manufactured by Stanley London Co.), and the index was set to 100 with Comparative Example 1 as 100. The higher the value, the higher the wet grip performance.
【００２９】（３）発熱性 （株）上島製作所製スペクトロメーターを用いて動的歪
振幅２％、周波数１０％、温度７０℃の条件で損失正接
（ｔａｎδ）を測定した。ｔａｎδの値の逆数を、比較
例１を１００として指数表示した。数値が大きいほど発
熱性が低いことを示す。(3) Exothermicity Using a spectrometer manufactured by Kamishima Seisakusho, the loss tangent (tan δ) was measured under the conditions of a dynamic strain amplitude of 2%, a frequency of 10% and a temperature of 70 ° C. The reciprocal of the value of tan δ was expressed as an index with Comparative Example 1 being 100. The larger the value, the lower the exothermicity.
【００３０】（４）耐摩耗性能 ランボーン型摩耗試験機を用いて、室温にてスリップ率
２０％の条件で摩耗量を測定した。摩耗量の逆数を、比
較例１を１００として指数表示をした。数値が大きいほ
ど耐摩耗性能が高いことを示す。(4) Abrasion resistance The amount of abrasion was measured using a Lambourn abrasion tester at room temperature under conditions of a slip ratio of 20%. The reciprocal of the abrasion amount was indicated as an index, with Comparative Example 1 being 100. The larger the value, the higher the abrasion resistance performance.
【００３１】結果は表２に示す。表２から明らかなよう
に、特定の時間にブタジエンゴムを混入した実施例１〜
４では、比較例１および２に比べ、低発熱性およびグリ
ップ性能を維持しつつ、耐摩耗性能を向上させることが
できた。The results are shown in Table 2. As is clear from Table 2, Examples 1 to 3 in which butadiene rubber was mixed at a specific time.
In No. 4, the wear resistance was improved while maintaining low heat generation and grip performance as compared with Comparative Examples 1 and 2.
【００３２】[0032]
【表１】 [Table 1]
【００３３】[0033]
【表２】 [Table 2]
【００３４】[0034]
【発明の効果】本発明のタイヤ用ゴム組成物の製造方法
およびタイヤ用ゴム組成物によれば、低発熱性およびグ
リップ性能を維持しつつ、耐摩耗性能を向上させたタイ
ヤを与えることができる。According to the method for producing a rubber composition for a tire and the rubber composition for a tire of the present invention, a tire having improved abrasion resistance while maintaining low heat build-up and grip performance can be provided. .
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０８Ｌ 9/00 Ｃ０８Ｌ 9/00 21/00 21/00 // Ｂ２９Ｋ 7:00 Ｂ２９Ｋ 7:00 9:00 9:00 Ｆターム(参考） 4F070 AA04 AA05 AA06 AA63 AB11 AC04 AC05 AC14 AC40 AE01 AE02 AE03 AE08 FA03 FA17 FB06 FB07 FB08 4F201 AA46 AB11 AH20 BA01 BC01 BC12 BC15 BK01 BK14 BK75 BN45 BQ50 4J002 AC011 AC032 AC061 AC071 AC081 AC091 BB181 DA036 DJ016 FD016 FD140 GN01──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C08L 9/00 C08L 9/00 21/00 21/00 // B29K 7:00 B29K 7:00 9:00 9:00 F term (reference) 4F070 AA04 AA05 AA06 AA63 AB11 AC04 AC05 AC14 AC40 AE01 AE02 AE03 AE08 FA03 FA17 FB06 FB07 FB08 4F201 AA46 AB11 AH20 BA01 BC01 BC12 BC15 BK01 BK14 BK75 BN45 BQ50 AC1AC01 AC01 DA01 AC01 FD016 FD140 GN01
Claims (3)
ンゴム以外のジエン系合成ゴム、（Ｂ）ブタジエンゴ
ム、ならびに（Ｃ）補強用充填剤を含有するタイヤ用ゴ
ム組成物の混練り工程において、まず、天然ゴムおよび
／またはブタジエンゴム以外のジエン系合成ゴム（Ａ）
を混練りし、ついで、ブタジエンゴム（Ｂ）および補強
用充填剤（Ｃ）を同時に混入し、または、補強用充填剤
（Ｃ）を混入したのちにブタジエンゴム（Ｂ）を混入
し、かつ、ブタジエンゴム（Ｂ）を、天然ゴムおよび／
またはブタジエンゴム以外のジエン系合成ゴム（Ａ）の
混練り開始後、全混練り時間の９０％までの時間内に混
入することを特徴とするタイヤ用ゴム組成物の製造方
法。In a kneading step of (A) a rubber composition for a tire containing (A) a diene-based synthetic rubber other than natural rubber and / or butadiene rubber, (B) butadiene rubber, and (C) a reinforcing filler, First, a diene-based synthetic rubber other than natural rubber and / or butadiene rubber (A)
And then kneading the butadiene rubber (B) and the reinforcing filler (C) at the same time, or mixing the reinforcing filler (C) followed by the butadiene rubber (B), and Butadiene rubber (B) is replaced with natural rubber and / or
Alternatively, after the kneading of the diene-based synthetic rubber (A) other than butadiene rubber is started, the rubber is mixed within a period of up to 90% of the total kneading time, thereby producing a rubber composition for a tire.
るタイヤ用ゴム組成物。2. A rubber composition for a tire obtained by the production method according to claim 1.
用いたタイヤ。3. A tire using the rubber composition according to claim 2 for a tread.
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|---|---|---|---|
| JP2000342150A JP4594511B2 (en) | 2000-11-09 | 2000-11-09 | Rubber composition for tire, method for producing the same, and tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002146036A true JP2002146036A (en) | 2002-05-22 |
| JP4594511B2 JP4594511B2 (en) | 2010-12-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006137806A (en) * | 2004-11-10 | 2006-06-01 | Sumitomo Rubber Ind Ltd | Manufacturing method for rubber composition, rubber composition and pneumatic tire having sidewall consisting of the same |
| JP2006257253A (en) * | 2005-03-17 | 2006-09-28 | Bridgestone Corp | Rubber composition and pneumatic tire obtained using the same |
| JP2008013650A (en) * | 2006-07-05 | 2008-01-24 | Sumitomo Rubber Ind Ltd | Method for producing tread rubber composition and tire having tread using treat rubber composition obtained by the production method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747543A (en) * | 1993-08-06 | 1995-02-21 | Bridgestone Corp | Hard rubber kneading method |
| JPH0753781A (en) * | 1993-08-19 | 1995-02-28 | Japan Synthetic Rubber Co Ltd | Method for producing rubber composition |
-
2000
- 2000-11-09 JP JP2000342150A patent/JP4594511B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0747543A (en) * | 1993-08-06 | 1995-02-21 | Bridgestone Corp | Hard rubber kneading method |
| JPH0753781A (en) * | 1993-08-19 | 1995-02-28 | Japan Synthetic Rubber Co Ltd | Method for producing rubber composition |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006137806A (en) * | 2004-11-10 | 2006-06-01 | Sumitomo Rubber Ind Ltd | Manufacturing method for rubber composition, rubber composition and pneumatic tire having sidewall consisting of the same |
| JP2006257253A (en) * | 2005-03-17 | 2006-09-28 | Bridgestone Corp | Rubber composition and pneumatic tire obtained using the same |
| JP2008013650A (en) * | 2006-07-05 | 2008-01-24 | Sumitomo Rubber Ind Ltd | Method for producing tread rubber composition and tire having tread using treat rubber composition obtained by the production method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4594511B2 (en) | 2010-12-08 |
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