JPH0214230A - Pneumatic tire - Google Patents
Pneumatic tireInfo
- Publication number
- JPH0214230A JPH0214230A JP63164595A JP16459588A JPH0214230A JP H0214230 A JPH0214230 A JP H0214230A JP 63164595 A JP63164595 A JP 63164595A JP 16459588 A JP16459588 A JP 16459588A JP H0214230 A JPH0214230 A JP H0214230A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- carbon black
- pneumatic tire
- amount
- 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
Links
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229920001971 elastomer Polymers 0.000 claims abstract description 30
- 239000005060 rubber Substances 0.000 claims abstract description 30
- 239000006229 carbon black Substances 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 22
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 20
- 239000011630 iodine Substances 0.000 claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 claims abstract description 19
- 238000001179 sorption measurement Methods 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 239000004014 plasticizer Substances 0.000 abstract description 2
- 239000004902 Softening Agent Substances 0.000 abstract 1
- 239000003963 antioxidant agent Substances 0.000 abstract 1
- 230000003078 antioxidant effect Effects 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 15
- 241000872198 Serjania polyphylla Species 0.000 description 8
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 229920003048 styrene butadiene rubber Polymers 0.000 description 3
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 101100099821 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) cbs-1 gene Proteins 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000010692 aromatic oil Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、連続高速走行に適した空気入りタイヤに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pneumatic tire suitable for continuous high-speed running.
［従来の技術］
高速走行時の高い操縦安定性を実現するためには、タイ
ヤのグリップ性能を向上させる必要がある。従来、グリ
ップ性能の向上を目的として、次のゴム組成物により空
気入りタイヤのトレッド部を構成することが試みられて
きた。[Prior Art] In order to achieve high steering stability during high-speed driving, it is necessary to improve the grip performance of tires. Conventionally, attempts have been made to construct the tread portion of pneumatic tires using the following rubber compositions for the purpose of improving grip performance.
まず、ゴム成分については、スチレン−ブタジェン共重
合体（以下、ＳＢＲという。）のスチレン含有率を高め
ることがあった。また、ゴム成分に小粒子径のカーボン
ブラックを配合したり、軟化剤とカーボンブラックとを
高充填したりすることもあった。これらの手段を適当に
組み合せたゴム組成物を使用することもあった。First, regarding the rubber component, the styrene content of a styrene-butadiene copolymer (hereinafter referred to as SBR) may be increased. In addition, carbon black with a small particle size is sometimes added to the rubber component, or a softener and carbon black are sometimes highly filled. Rubber compositions incorporating appropriate combinations of these measures have also been used.
以上の従来のゴム組成物で構成されるトレッド部を有す
る空気入りタイヤでは、タイヤのグリップ性能が高めら
れるが、高速走行時のトレッド部発熱量が大きくなる。In a pneumatic tire having a tread made of the above-described conventional rubber composition, the grip performance of the tire is improved, but the amount of heat generated in the tread during high-speed running increases.
［発明が解決しようとする課題］
前記のゴム組成物を使用したトレッド部を有する従来の
空気入りタイヤでは、いずれの組成物の場合であっても
、高速走行の初期段階では確かに高グリップ性能を有す
るものの、長時間連続的に高速走行するうちに発熱のた
めにタイヤのグリップ性能が低下する。例えば小粒子径
のカーボンブラックをゴム成分に多量配合するだけでは
、この問題があった。[Problems to be Solved by the Invention] Conventional pneumatic tires having tread parts using the above-mentioned rubber compositions certainly have high grip performance at the initial stage of high-speed running, regardless of the composition. However, during continuous high-speed driving for long periods of time, the tire's grip performance deteriorates due to heat generation. For example, simply adding a large amount of small particle size carbon black to a rubber component causes this problem.
本発明は、高速走行の初期段階において高いグリップ性
能を有するとともに、連続高速走行中にトレッド部が発
熱してもグリップ性能の低下が抑制される高速耐久力に
優れた空気入りタイヤを提供することを目的とする。An object of the present invention is to provide a pneumatic tire that has high grip performance in the initial stage of high-speed running, and has excellent high-speed durability that suppresses deterioration of grip performance even when the tread portion generates heat during continuous high-speed running. With the goal.
［課題を解決するための手段］
本発明に係る空気入りタイヤでは、トレッド部を構成す
るゴム組成物として次の組成物を採用した。すなわち、
ゴム成分１００重量部に対して、よう素吸＠量が１２０
ｍｇ／ｇ以上のカーボンブラックを８０重量部以上配合
するとともに、酸化亜鉛を１５〜３０重量部配合したも
のである。[Means for Solving the Problems] In the pneumatic tire according to the present invention, the following composition was employed as a rubber composition constituting the tread portion. That is,
The amount of iodine adsorbed is 120 per 100 parts by weight of the rubber component.
It contains 80 parts by weight or more of carbon black of mg/g or more and 15 to 30 parts by weight of zinc oxide.
このタイヤの製造工程においてゴム組成物の良好な混練
作業性を確保するためには、配合するカーボンブラック
のよう素吸着量を１２０〜２５０ｍｇ／ｇに制限し、し
かも、その配合量を８０〜２０Ｏｆｆｉｆｆｉ部に制限
すれば良い。In order to ensure good kneading workability of the rubber composition in the manufacturing process of this tire, the iodine adsorption amount of the carbon black to be blended is limited to 120 to 250 mg/g, and the blended amount is limited to 80 to 20 mg/g. It should be limited to the section.
なお、上記成分の他に公知の加硫剤、加硫促進剤、加硫
促進助剤、加硫遅延剤、軟化剤、可塑剤、老化防止剤、
粘着付与剤等を添加できることはもちろんである。In addition to the above ingredients, known vulcanizing agents, vulcanization accelerators, vulcanization accelerating aids, vulcanization retarders, softeners, plasticizers, anti-aging agents,
Of course, a tackifier and the like can be added.
［作 用］
本発明に係る空気入りタイヤでは、ゴム成分１００重量
部に対してよう素吸着量１２０＋ｎｇ／ｇ以上のカーボ
ンブラックを８０重量部以上配合しており、このことに
よって高速走行の初期段階における高グリップ性能が実
現される。しかも、酸化亜鉛を１５重量部以上配合する
ことによって連続高速走行中のグリップ性能の低下が抑
制される。また、酸化亜鉛の配合量を３０重量部以下に
制限しているため、連続高速走行下でモトレッド部のク
ラック発生が防止される。[Function] In the pneumatic tire according to the present invention, 80 parts by weight or more of carbon black with an iodine adsorption amount of 120+ng/g or more is blended with respect to 100 parts by weight of the rubber component. High grip performance is achieved. In addition, by incorporating 15 parts by weight or more of zinc oxide, deterioration in grip performance during continuous high-speed running is suppressed. Furthermore, since the amount of zinc oxide is limited to 30 parts by weight or less, cracks in the moto tread portion are prevented from occurring during continuous high-speed running.
［実施例］
以下、実施例及び比較例を挙げて本発明を更に詳細に説
明する。[Examples] Hereinafter, the present invention will be explained in more detail by giving Examples and Comparative Examples.
第１表に、本発明の実施例に係る空気入りタイヤのトレ
ッド部を構成するゴム組成物の配合の一部を示す。また
、第２表には比較例の配合の一部を示す。ただし、実施
例１〜５及び比較例１〜６の空気入りタイヤは、いずれ
もゴム成分が１００重量部であって、３５％のスチレン
を含有する５ＢＲ６０重量部と２３．５％のスチレンを
含有する５ＢＲ４０重量部とを使用している。Table 1 shows a part of the formulation of the rubber composition constituting the tread portion of the pneumatic tire according to the example of the present invention. Further, Table 2 shows some of the formulations of comparative examples. However, the pneumatic tires of Examples 1 to 5 and Comparative Examples 1 to 6 each had a rubber component of 100 parts by weight, and contained 60 parts by weight of 5BR containing 35% styrene and 23.5% styrene. 40 parts by weight of 5BR is used.
（以 下 余 白）
実施例１は、前記のゴム成分１００重量部に対して、よ
う素膜着量が１３０ｍｇ／ｇのカーボンブラックを８５
重量部配合するとともに、酸化亜鉛２０重量部を配合し
たゴム組成物により、トレッド部を構成したものである
。実施例２は、よう素膜＠量が１３０＋ａｇ／ｇのカー
ボンブラック１００重量部及び酸化亜鉛２０重量部を配
合したもの、実施例３は、よう素膜着量が１５０−ｇ／
ｌｒのカーボンブラック１００重量部及び酸化亜鉛２０
重量部を配合したもの、実施例４は、よう素膜着量が１
３０ｍｇ／ｇのカーボンブラック１００重量部及び酸化
亜鉛１５重量部を配合したもの、実施例５は、よう素膜
着量が１３０ｍｇ／ｇのカーボンブラック１００重量部
及び酸化亜鉛３０重量部を配合したものである。(Left below) In Example 1, 85 parts of carbon black with an iodine coating amount of 130 mg/g was added to 100 parts by weight of the rubber component.
The tread portion is made of a rubber composition containing 20 parts by weight of zinc oxide. In Example 2, 100 parts by weight of carbon black with an iodine film @ amount of 130+ag/g and 20 parts by weight of zinc oxide were blended, and in Example 3, the amount of iodine film deposited was 150-g/g.
100 parts by weight of lr carbon black and 20 parts by weight of zinc oxide
In Example 4, the amount of iodine film deposited was 1 part by weight.
In Example 5, 100 parts by weight of carbon black with an iodine film deposition amount of 130 mg/g and 30 parts by weight of zinc oxide were blended. It is.
一方、比較例１は、よう素膜ム量が１３０５ｇ／ｇのカ
ーボンブラックの配合量を実施例１〜５のいずれの場合
よりも少ない７０重量部とし、更に酸化亜鉛２０重量部
を配合したものである。On the other hand, in Comparative Example 1, the amount of carbon black with an iodine film content of 1305 g/g was 70 parts by weight, which is lower than in any of Examples 1 to 5, and 20 parts by weight of zinc oxide was further added. It is.
比較例２は、配合するカーボンブラックの粒子径を大き
くしたものであって、よう素膜着量が１’００ａ＋ｇ／
ｇのカーボンブラック１００重量部及び酸化亜鉛２０重
量部を配合したものである。In Comparative Example 2, the particle size of the carbon black to be blended was increased, and the amount of iodine film deposited was 1'00a+g/
100 parts by weight of carbon black and 20 parts by weight of zinc oxide.
比較例３〜６の場合のカーボンブラックは、いずれもよ
う素膜着量が１３０ｍｇ／ｇであり、その配合量は１０
０重量部であって、実施例２゜４．５と同じである。と
ころが、比較例３〜５の場合は酸化亜鉛の配合量が少な
く、それぞれ２．５及び１０重量部であり、比較例６の
場合は逆に酸化亜鉛の配合量を多くして４０重二部とし
ている。The carbon black in Comparative Examples 3 to 6 had an iodine film deposition amount of 130 mg/g, and the blended amount was 10
0 part by weight, which is the same as Example 2°4.5. However, in Comparative Examples 3 to 5, the amount of zinc oxide blended was small, 2.5 and 10 parts by weight, respectively, and in Comparative Example 6, the amount of zinc oxide blended was increased to 40 parts by weight. It is said that
実施例１〜５及び比較例１〜６は、いずれも以上の各成
分に加えて画表に示す６量のアロマチックオイルを配合
するとともに、更に次の薬剤を添加し、これを混練して
得られたゴム組成物を使用している。In Examples 1 to 5 and Comparative Examples 1 to 6, in addition to each of the above ingredients, 6 amounts of aromatic oil shown in the diagram were blended, and the following chemicals were added and kneaded. The obtained rubber composition is used.
（Ｌ）ステアリン酸 ２重量部（２）サン
ドフレックス１３ １重量部（３）パラフィンワック
ス １重量部（４）ＣＢＳ １
．４重量部（５）硫 黄 ２重量部
なお、サンドフレックス１３は三菱モンサント化成社製
のアミン系老化防止剤であり、ＣＢＳは加硫促進剤であ
る。(L) Stearic acid 2 parts by weight (2) Sandflex 13 1 part by weight (3) Paraffin wax 1 part by weight (4) CBS 1
．． 4 parts by weight (5) Sulfur 2 parts by weight Sandflex 13 is an amine anti-aging agent manufactured by Mitsubishi Monsanto Chemical Co., Ltd., and CBS is a vulcanization accelerator.
以上に説明した実施例１〜５及び比較例１〜６の空気入
りタイヤを使用して、サーキットコースにて連続高速走
行テストを行った。このテストの結果も第１表及び第２
表に示す。A continuous high-speed running test was conducted on a circuit course using the pneumatic tires of Examples 1 to 5 and Comparative Examples 1 to 6 described above. The results of this test are also shown in Tables 1 and 2.
Shown in the table.
テストはサーキットコースを１２周高速走行することに
よって行い、凸周のラップタイムを測定した。また、１
２周走行後のトレッド部の表面状態をも検査した。１２
周中の最も良いラップタイムをベストラップタイムＴ１
として画表中に示す。また、最初の３周の平均ラップタ
イムを初期平均ラップタイムＴ２として、最後の３周の
平均ラップタイムを最終平均ラップタイムＴ３としてそ
れぞれ示す。画表には、初期平均今ツブタイムＴ２と最
終平均ラップタイムＴ３との差の計算値すなわちＴ３−
Ｔ２を併せて示す。The test was conducted by driving 12 laps around a circuit course at high speed, and the lap times for the convex laps were measured. Also, 1
The surface condition of the tread portion after two laps was also inspected. 12
The best lap time during the lap is the best lap time T1
It is shown in the diagram as . Further, the average lap time of the first three laps is shown as an initial average lap time T2, and the average lap time of the last three laps is shown as a final average lap time T3. The chart shows the calculated value of the difference between the initial average current lap time T2 and the final average lap time T3, that is, T3-
T2 is also shown.
この連続高速走行テストによれば、高速走行の初期段階
におけるグリップ性能の良否をＴ２の値により判定する
ことができ、連続高速走行中のグリップ性能の低下の程
度をＴ３−Ｔ２の値により評価することができる。According to this continuous high-speed driving test, the quality of grip performance in the initial stage of high-speed driving can be determined by the value of T2, and the degree of decrease in grip performance during continuous high-speed driving can be evaluated by the value of T3-T2. be able to.
実施例１〜５の場合は、いずれもＴ１の値が小さい。ま
た、Ｔ２の値が小さく、高速走行の初期段階におけるグ
リップ性能が良好である。In Examples 1 to 5, the value of T1 is small. Furthermore, the value of T2 is small, and the grip performance at the initial stage of high-speed running is good.
しかも、いずれの場合もＴ３−Ｔ２の値が小さく、連続
高速走行中のグリップ性能の低下の程度が小さい。テス
ト終了後のトレッド部の表面状態はいずれの場合も良好
であって、クラックの発生は見られなかった。Furthermore, in either case, the value of T3-T2 is small, and the degree of deterioration in grip performance during continuous high-speed running is small. The surface condition of the tread portion after the test was good in all cases, and no cracks were observed.
これに対してカーボンブラックの配合が少ない比較例１
では、以上に説明した実施例１〜５に比較して、Ｔ３−
Ｔ２の値がほぼ同程度に小さいものの、Ｔ１、Ｔ２及び
Ｔ３の値が大きく、初期段階からグリップ性能が不十分
である。On the other hand, Comparative Example 1 containing less carbon black
Now, compared to Examples 1 to 5 described above, T3-
Although the value of T2 is almost as small, the values of T1, T2, and T3 are large, and the grip performance is insufficient from the initial stage.
よう素膜着量が１００■ｇ／ｇの大きい粒子径を有する
カーボンブラックを配合した比較例２の場合も、比較例
１の場合と同様に十分なグリップ性能が得られない。In the case of Comparative Example 2 in which carbon black having a large particle size with an iodine film coverage of 100 g/g was blended, as in Comparative Example 1, sufficient grip performance could not be obtained.
酸化亜鉛の配合量が小さい比較例３〜５では、実施例１
〜５とほぼ同程度に高い初期グリップ性能が得られるも
のの、この配合量が小さいほどＴ３−７２の値が大きく
、グリップ性能が低下してきている。In Comparative Examples 3 to 5 with a small amount of zinc oxide, Example 1
Although the initial grip performance is almost as high as that of Example 5, the smaller the blending amount, the larger the value of T3-72, and the grip performance is decreasing.
酸化亜鉛の配合量が大きい比較例６では、ラップタイム
の面では実施例１〜５の場合と同様に全て良好であるに
もかかわらず、テスト終了後のトレッド部表面を検査し
たところクラックが発生しており、問題がある。In Comparative Example 6, which had a large amount of zinc oxide, cracks were observed when the tread surface was inspected after the test, although the lap time was as good as in Examples 1 to 5. There is a problem.
以上のことから、高速走行の初期段階における高グリッ
プ性能を実現するとともに連続高速走行中のグリップ性
能の低下を抑制し、しかもトレッド部のクラック発生を
防止するためには、ゴム成分１００重量部に対して、よ
う素膜着量がｌ企Ｏｍｇ／ｇ以上のカーボンブラックを
８０重量部以上配合するとともに、酸化亜鉛を１５〜３
０重量部配合したゴム組成物により空気入りタイヤのト
レッド部を構成すれば良い。Based on the above, in order to achieve high grip performance at the initial stage of high-speed running, suppress the decline in grip performance during continuous high-speed running, and prevent cracks in the tread, it is necessary to add 100 parts by weight of the rubber component. On the other hand, 80 parts by weight or more of carbon black with an iodine film deposition amount of 1 Omg/g or more is blended, and 15 to 3 parts by weight of zinc oxide is added.
The tread portion of a pneumatic tire may be formed from a rubber composition containing 0 parts by weight.
配合するカーボンブラックのよう素膜＠量は１２０〜２
５０ｍｇ／ｇが好ましく、１２０礪ｇ／ｇ未満では満足
するグリップ性能が得られず、２５０ｍｇ／ｉｒを超え
ると粒子径が小さ過ぎて混練作業性が悪化する。また、
その配合量は８０〜２００重量部が好ましく、８０重量
部未満では満足するグリップ性能が得られず、２００重
量部を超えると混線作業性が悪化する。酸化亜鉛の配合
量は、１５重量部未満では連続して高速走行する場合の
グリップ性能の低下を防げず、３０重量部を超えると耐
クラツク性能が劣る。Iodine film of carbon black to be blended @ amount is 120~2
50 mg/g is preferable; if it is less than 120 g/g, satisfactory grip performance cannot be obtained, and if it exceeds 250 mg/ir, the particle size is too small and kneading workability deteriorates. Also,
The blending amount is preferably 80 to 200 parts by weight; if it is less than 80 parts by weight, satisfactory grip performance cannot be obtained, and if it exceeds 200 parts by weight, the cross-wire workability will deteriorate. If the amount of zinc oxide is less than 15 parts by weight, it will not be possible to prevent the grip performance from deteriorating during continuous high-speed running, and if it exceeds 30 parts by weight, the crack resistance will be poor.
なお、トレッド部のゴム成分としては、ジエン系合成ゴ
ム単独、天然ゴム単独あるいはこれらのブレンド物が好
適であり、ＳＢＲ単独あるいは他のジエン系ゴムとのブ
レンド物が特に好適である。As the rubber component for the tread portion, diene-based synthetic rubber alone, natural rubber alone, or a blend thereof is suitable, and SBR alone or a blend thereof with other diene-based rubber is particularly suitable.
［発明の効果］
本発明に係る空気入りタイヤは、ゴム成分１００重量部
に対してよう素膜Ｂ Ｉ２１２０ ｍｇ ／ ｇ以上の
カーボンブラックを８０重量部以上配合したゴム組成物
でトレッド部を構成しているため、高速走行の初期段階
における高グリップ性能が実現される。しかも、更に酸
化亜鉛を１５〜３０重量部配合することによって、連続
高速走行中のグリップ性能の低下を抑制し、かつ、トレ
ッド部のクラック発生を防止している。[Effects of the Invention] The pneumatic tire according to the present invention has a tread portion made of a rubber composition containing 80 parts by weight or more of carbon black with an iodine film B I of 2120 mg/g or more per 100 parts by weight of the rubber component. This ensures high grip performance in the early stages of high-speed driving. Moreover, by further blending 15 to 30 parts by weight of zinc oxide, a decrease in grip performance during continuous high-speed running is suppressed, and cracks in the tread portion are prevented.
以上に説明したように、本発明によれば、高速走行の初
期段階において高いグリップ性能を６するとともに、連
続高速走行中にトレッド部が発熱してもグリップ性能の
低下が抑制される高速耐久力に優れた空気入りタイヤを
提供することができる。したがって、本発明に係る空気
入りタイヤを使用すれば、−層高速で一層安定した連続
走行が可能となる。As explained above, according to the present invention, high grip performance is achieved at the initial stage of high-speed driving, and high-speed durability is achieved to suppress deterioration of grip performance even if the tread portion generates heat during continuous high-speed driving. can provide excellent pneumatic tires. Therefore, by using the pneumatic tire according to the present invention, more stable continuous running at higher speeds is possible.
特に、配合するカーボンブラックのよう素膜着量を１２
０〜２５０■ｇ／ｇに制限し、しかも、その配合量を８
０〜２００重量部に制限する場合には、タイヤの製造工
程において周知の装置例えばバンバリーミキサ−やニー
ダ−によるゴム組成物の混練作業を容易に実行すること
かでき名効果がある。In particular, the amount of iodine film of the carbon black to be blended is 12
It is limited to 0 to 250 g/g, and the amount added is 8 g/g.
When the amount is limited to 0 to 200 parts by weight, the kneading operation of the rubber composition can be easily carried out in a well-known device such as a Banbury mixer or a kneader in the tire manufacturing process, which is advantageous.
特 許 出 願 人 東洋ゴム工業株式会社Special permission Out wish Man Toyo Rubber Industries Co., Ltd.
Claims (1)
２０ｍｇ／ｇ以上のカーボンブラックを８０重量部以上
配合し、酸化亜鉛を１５〜３０重量部配合したゴム組成
物によりトレッド部を構成したことを特徴とする空気入
りタイヤ。 ２、配合するカーボンブラックは、よう素吸着量が１２
０〜２５０ｍｇ／ｇであるとともに、その配合量が８０
〜２００重量部であることを特徴とする請求項１記載の
空気入りタイヤ。[Claims] 1. The amount of iodine adsorbed is 1 per 100 parts by weight of the rubber component.
A pneumatic tire comprising a tread portion made of a rubber composition containing 80 parts by weight or more of carbon black of 20 mg/g or more and 15 to 30 parts by weight of zinc oxide. 2. The carbon black to be blended has an iodine adsorption amount of 12
0 to 250 mg/g, and the blending amount is 80 mg/g.
2. The pneumatic tire according to claim 1, wherein the amount is 200 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63164595A JPH0214230A (en) | 1988-06-30 | 1988-06-30 | Pneumatic tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63164595A JPH0214230A (en) | 1988-06-30 | 1988-06-30 | Pneumatic tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214230A true JPH0214230A (en) | 1990-01-18 |
Family
ID=15796167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63164595A Pending JPH0214230A (en) | 1988-06-30 | 1988-06-30 | Pneumatic tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214230A (en) |
-
1988
- 1988-06-30 JP JP63164595A patent/JPH0214230A/en active Pending
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