JP5091587B2 - Evaluation method of tire grip characteristics - Google Patents

Evaluation method of tire grip characteristics Download PDF

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JP5091587B2
JP5091587B2 JP2007216420A JP2007216420A JP5091587B2 JP 5091587 B2 JP5091587 B2 JP 5091587B2 JP 2007216420 A JP2007216420 A JP 2007216420A JP 2007216420 A JP2007216420 A JP 2007216420A JP 5091587 B2 JP5091587 B2 JP 5091587B2
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tire
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grip characteristics
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一誠 中北
鉄也 国澤
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Sumitomo Rubber Industries Ltd
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Description

本発明は、ゴム組成物の特性、さらには組成からタイヤのグリップ特性を単回帰分析により評価する方法に関する。本発明によれば、精度を落とさずに実験数を減らすことができる。   The present invention relates to a method for evaluating characteristics of a rubber composition, and further, grip characteristics of a tire from the composition by single regression analysis. According to the present invention, the number of experiments can be reduced without reducing accuracy.

タイヤのグリップ力はタイヤトレッドゴムの凝着摩擦とヒステリシス摩擦によって生ずるが、これらの摩擦を考慮してタイヤトレッドゴム組成物の物性からグリップ特性を相関付けようとすると、2つの式による重回帰分析となり、実験数を多く必要とする。   The tire grip force is generated by the adhesion friction and hysteresis friction of the tire tread rubber. When these frictions are taken into consideration and the grip characteristics are correlated with the physical properties of the tire tread rubber composition, a multiple regression analysis using two equations is performed. Therefore, a large number of experiments are required.

ところでタイヤのグリップ特性をタイヤのトレッドを形成するゴム組成物の物性から単回帰式で評価することは、すでに提案されている(特許文献1)。   Incidentally, it has already been proposed to evaluate the grip characteristics of a tire by a single regression equation from the physical properties of the rubber composition forming the tread of the tire (Patent Document 1).

特許文献1では、トレッドゴムの損失正接をtanδとし、貯蔵弾性率をE’としたとき、グリップ力KをK={tanδ/(E’)1/3}×104の関係式で表わし、左右のタイヤのグリップ力に変化をつけて旋回時の安定性を向上させることが提案されている。 In Patent Document 1, when the loss tangent of the tread rubber is tan δ and the storage elastic modulus is E ′, the grip force K is expressed by a relational expression of K = {tan δ / (E ′) 1/3 } × 10 4 , It has been proposed to improve the stability during turning by changing the grip force of the left and right tires.

しかし、tanδとE’とは温度や歪条件によっては相関しやすく(すなわち、{tanδ/(E’)1/3}が定数になってしまう)、tanδとE’を用いてグリップ特性を単回帰分析することは困難であるが、特許文献1ではどのような組成のゴム組成物を選定し実験を進めるかは示唆されておらず、特許文献1によって、計画的に実験を行い、グリップ特性をゴム組成物の物性から単回帰分析することは困難である。 However, tan δ and E ′ are likely to correlate depending on temperature and strain conditions (that is, {tan δ / (E ′) 1/3 } becomes a constant), and the grip characteristics are simply determined using tan δ and E ′. Although it is difficult to carry out regression analysis, Patent Document 1 does not suggest what kind of rubber composition to select and proceed with the experiment. It is difficult to perform a single regression analysis from the physical properties of the rubber composition.

本発明者らは、直行配列表を用いて、損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成のゴム組成物を直行配列表を用いて選定し、それらのtanδ/E*nを変数とするとき、グリップ特性が単回帰式で表現でき、精度を落とさずに少ない実験数でタイヤのグリップ特性を評価できることを見出し、本発明を完成した。 The present inventors selected a rubber composition having a composition in which the loss tangent tan δ and the complex elastic modulus E * do not correlate with each other at any temperature and amplitude strain using the orthogonal arrangement table, When these tanδ / E * n are used as variables, the grip characteristics can be expressed by a single regression equation, and it has been found that the grip characteristics of a tire can be evaluated with a small number of experiments without degrading the accuracy, and the present invention has been completed.

特開平8−132823号公報JP-A-8-132823

本発明は、タイヤのトレッド用ゴム組成物の損失正接tanδと複素弾性率E*から精度を落とさずに少ない実験数でタイヤのグリップ特性を評価できる方法を提供することを目的とする。   An object of the present invention is to provide a method capable of evaluating the grip characteristics of a tire with a small number of experiments without degrading the accuracy from the loss tangent tan δ and the complex elastic modulus E * of the rubber composition for a tire tread.

すなわち本発明は、ゴム組成物を含むトレッドを有するタイヤにおいて、直行配列表を用いて、損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成のゴム組成物を作製し、該ゴム組成物のtanδ/E*nを変数とする単回帰式によりタイヤのグリップ特性を分析するグリップ特性の評価方法に関する。 That is, the present invention relates to a rubber composition having a composition in which loss tangent tan δ and complex elastic modulus E * do not correlate with each other at any temperature and amplitude strain using a direct array table in a tire having a tread containing the rubber composition. And a grip characteristic evaluation method for analyzing the grip characteristic of a tire by a single regression equation using tan δ / E * n of the rubber composition as a variable.

かかる評価方法において、ゴム組成物におけるパラメータとして、
(1)ゴム成分の種類または配合量、
(2)カーボンブラックの種類または配合量、および
(3)硫黄の配合量および/または加硫促進剤の種類と配合量
を選択し、これらのパラメータで直行配列表を組み、この実験計画表に従って、損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成の実験用ゴム組成物を作製し、該実験用ゴム組成物のtanδおよびE*nのデータを取得し、さらに該実験用ゴム組成物をトレッドとして有するタイヤの実走行試験によりグリップ特性データを取得し、前記関係:tanδ/E*nを変数とするグリップ特性の単回帰式を導き、この単回帰式に従って該実験用ゴム組成物の組成からタイヤのグリップ特性を分析することが好ましい。
In such an evaluation method, as a parameter in the rubber composition,
(1) Type or amount of rubber component,
(2) Carbon black type or blending amount, and (3) sulfur blending amount and / or vulcanization accelerator type and blending amount are selected, and an orthogonal array is assembled with these parameters. An experimental rubber composition having a composition in which the loss tangent tan δ and the complex elastic modulus E * do not correlate with each other at any temperature and amplitude strain is prepared, and data on the tan δ and E * n of the experimental rubber composition is obtained. Further, grip characteristic data was obtained by an actual running test of a tire having the experimental rubber composition as a tread, and a single regression equation of grip characteristics with the above relationship: tan δ / E * n as a variable was derived, and this single regression It is preferable to analyze the grip characteristics of the tire from the composition of the experimental rubber composition according to the formula.

本発明によれば、タイヤのトレッド用ゴム組成物の損失正接tanδと複素弾性率E*から精度を落とさずに少ない実験数でタイヤのグリップ特性を評価できる方法を提供することができる。   According to the present invention, it is possible to provide a method capable of evaluating the grip characteristics of a tire with a small number of experiments without degrading the accuracy from the loss tangent tan δ and the complex elastic modulus E * of the rubber composition for a tire tread.

本発明の特徴の1つは、トレッド用ゴム組成物のtanδ/E*nを変数とする単回帰式を利用する点にある。 One of the features of the present invention is that a single regression equation using tan δ / E * n of the rubber composition for tread as a variable is used.

トレッド用ゴム組成物の損失正接tanδはヒステリシス摩擦の指標であり、このヒステリシス摩擦はエネルギーロスと相関することからグリップ特性に関係する。   The loss tangent tan δ of the rubber composition for tread is an index of hysteresis friction, and this hysteresis friction correlates with energy loss and is related to grip characteristics.

トレッド用ゴム組成物の複素弾性率E*は凝着摩擦の指標であり、接触面積さらには硬さと相関することからグリップ特性に関係する。E*は動的粘弾性試験結果から算出することができる。   The complex elastic modulus E * of the rubber composition for tread is an index of adhesion friction, and correlates with the contact area and also with the hardness, and thus relates to the grip characteristics. E * can be calculated from the results of the dynamic viscoelasticity test.

nは0〜3程度の正の有理数であり、路面のあらさにより決定される。nの値が大きくなるとヒステリシス摩擦に影響を与え、値が小さくなると凝着摩擦に影響を与える。   n is a positive rational number of about 0 to 3, and is determined by the roughness of the road surface. When the value of n is increased, hysteresis friction is affected, and when the value is decreased, adhesion friction is affected.

トレッド用ゴム組成物のtanδ/E*nをグリップ特性の単回帰式の変数とする理由は、サンプル数が少ない場合でも、精度よくヒステリシス摩擦の影響と凝着摩擦の影響とを分離できるからである。 The reason for using tanδ / E * n of the rubber composition for treads as a variable of the single regression equation of grip characteristics is that the effects of hysteresis friction and adhesion friction can be accurately separated even when the number of samples is small. is there.

本発明のもう1つの特徴は、タイヤのグリップ特性を評価するに当たり、損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成の実験用のトレッド用ゴム組成物を直行配列表から選定する点にある。直行配列表としては、L4直行配列表、L8直行配列表、L9直行配列表などが利用できるが、サンプル数が少ない点からL4直行配列表が好ましい。   Another feature of the present invention is an experimental tread rubber composition having a composition in which the loss tangent tan δ and the complex elastic modulus E * do not correlate with each other at any temperature and amplitude strain in evaluating the grip characteristics of the tire. Is selected from the orthogonal array table. As the orthogonal array table, an L4 orthogonal array table, an L8 orthogonal array table, an L9 orthogonal array table, or the like can be used, but the L4 orthogonal array table is preferable from the viewpoint of a small number of samples.

損失正接tanδと複素弾性率E*がいずれの温度および振幅歪においても互いに相関しない組成を選定するための直行配列表は、つぎに示すパラメータなどを基に作成すればよい。   An orthogonal array table for selecting compositions in which the loss tangent tan δ and the complex elastic modulus E * are not correlated with each other at any temperature and amplitude strain may be created based on the following parameters.

好ましいパラメータとしては、
(1)ゴム成分の種類または配合量、
(2)カーボンブラックの種類または配合量、
(3)硫黄の配合量および/または加硫促進剤の種類と配合量、
(4)樹脂の種類または配合量、
(5)可塑剤の種類または配合量、
(6)シリカの種類または配合量、
などが挙げられるが、グリップ特性との相関が明確な点、タイヤトレッド用のゴム組成物の基本構成である点、物性がランダム化しやすい(たとえば、損失正接tanδと複素弾性率E*の相関が低くなる、損失正接tanδも各温度間の相関が低くなり、どの温度での相関が高いかといった点が明確になるなど)点などから、(1)〜(3)が好ましい。
Preferred parameters are:
(1) Type or amount of rubber component,
(2) The type or amount of carbon black,
(3) Sulfur blending amount and / or vulcanization accelerator type and blending amount,
(4) Type or amount of resin,
(5) Plasticizer type or amount,
(6) Type or amount of silica,
However, it is easy to randomize the physical properties (for example, the correlation between the loss tangent tan δ and the complex elastic modulus E *). (1) to (3) are preferable from the viewpoint that the loss tangent tan δ becomes lower and the correlation between the temperatures becomes lower and the correlation at which temperature is higher becomes clear.

ゴム成分としては特に限定されず、タイヤのトレッド用ゴム組成物として使用され得るものであればよい。たとえば天然ゴム(NR)、ブタジエンゴム(BR)、スチレンブタジエンゴム(SBR)、ブチルゴムなどの1種または2種以上が例示でき、なかでもNR、BR、SBRの1種または2種以上がトレッド用ゴムとして一般的である。   The rubber component is not particularly limited as long as it can be used as a rubber composition for a tire tread. For example, one or more of natural rubber (NR), butadiene rubber (BR), styrene butadiene rubber (SBR), butyl rubber and the like can be exemplified, and among them, one or more of NR, BR and SBR are for tread. Common as rubber.

カーボンブラックとしては、特に限定されず、タイヤのトレッド用ゴム組成物として使用され得るものであればよい。たとえばSAF、ISAF、HAFなどが例示できる。   The carbon black is not particularly limited as long as it can be used as a rubber composition for a tire tread. For example, SAF, ISAF, HAF and the like can be exemplified.

カーボンブラックの配合量とは、ゴム成分に対する重量部で表現する。通常、ゴム成分100重量部に対する重量部である。   The compounding amount of carbon black is expressed in parts by weight with respect to the rubber component. Usually, the amount is 100 parts by weight of the rubber component.

硫黄の配合量とは、ゴム成分に対する重量部で表現する。通常、ゴム成分100重量部に対する重量部である。   The amount of sulfur is expressed in parts by weight relative to the rubber component. Usually, the amount is 100 parts by weight of the rubber component.

加硫促進剤としては、特に限定されず、タイヤのトレッド用ゴム組成物として使用され得るものであればよい。たとえばN−ターシャリブチル−2−ベンゾチアゾリルスルフェンアミド(TBBS)、N−シクロヘキシル−2−ベンゾチアゾリルスルフェンアミド(CBS)、N,N’―ジシクロヘキシル−2−ベンゾチアゾリルスルフェンアミド(DCBS)、ジ−2−ベンゾチアゾリルジスルフィド(MBTS)、2−メルカプトベンゾチアゾール(MBT)などが例示できる。また、配合量とは、ゴム成分に対する重量部で表現する。通常、ゴム成分100重量部に対する重量部である。   The vulcanization accelerator is not particularly limited as long as it can be used as a rubber composition for a tire tread. For example, N-tertiarybutyl-2-benzothiazolylsulfenamide (TBBS), N-cyclohexyl-2-benzothiazolylsulfenamide (CBS), N, N′-dicyclohexyl-2-benzothiazolylsulfenamide (DCBS), di-2-benzothiazolyl disulfide (MBTS), 2-mercaptobenzothiazole (MBT) and the like. The compounding amount is expressed in parts by weight with respect to the rubber component. Usually, the amount is 100 parts by weight of the rubber component.

これらのパラメータを使用して、直行配列表を作成する。そのとき、ゴム組成物の損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成となるように作成する。   Use these parameters to create an orthogonal array table. At that time, the rubber composition is prepared so that the loss tangent tan δ and the complex elastic modulus E * of the rubber composition are not correlated with each other at any temperature and amplitude strain.

ゴム組成物の損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成は、上記パラメータを基準にして決めればよい。   The composition in which the loss tangent tan δ and the complex elastic modulus E * of the rubber composition do not correlate with each other at any temperature and amplitude strain may be determined based on the above parameters.

つぎに、上記(1)〜(3)のパラメータを使用した直行配列表の例を示すが、本発明はこの配列表に限定されるものではない。   Next, an example of an orthogonal array table using the parameters (1) to (3) is shown, but the present invention is not limited to this array table.

(直行配列表の例1) (Example 1 of an orthogonal array table)

Figure 0005091587
Figure 0005091587

この直行配列表から、つぎの8つの配合が作製できる。
(1)SBR1+カーボンブラック60重量部+硫黄1重量部
(2)SBR1+カーボンブラック70重量部+硫黄1重量部
(3)SBR1+カーボンブラック60重量部+硫黄2重量部
(4)SBR1+カーボンブラック70重量部+硫黄2重量部
(5)SBR2+カーボンブラック60重量部+硫黄1重量部
(6)SBR2+カーボンブラック70重量部+硫黄1重量部
(7)SBR2+カーボンブラック60重量部+硫黄2重量部
(8)SBR2+カーボンブラック70重量部+硫黄2重量部
From the orthogonal array table, the following eight formulations can be prepared.
(1) SBR1 + 60 parts by weight of carbon black + 1 part by weight of sulfur (2) SBR1 + 70 parts by weight of carbon black + 1 part by weight of sulfur (3) SBR1 + 60 parts by weight of carbon black + 2 parts by weight of sulfur (4) 70 parts by weight of SBR1 + carbon black Parts + sulfur 2 parts (5) SBR2 + carbon black 60 parts by weight + sulfur 1 part by weight (6) SBR2 + carbon black 70 parts by weight + sulfur 1 part by weight (7) SBR2 + carbon black 60 parts by weight + sulfur 2 parts by weight (8 ) SBR2 + carbon black 70 parts by weight + sulfur 2 parts by weight

これらのパラメータで組んだ直行配列表に従い、この実験計画表に従って、損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成の実験用ゴム組成物を作製する。   An experimental rubber composition having a composition in which the loss tangent tan δ and the complex elastic modulus E * do not correlate with each other at any temperature and amplitude strain is prepared according to the orthogonal arrangement table constructed with these parameters.

単回帰分析が可能であるから、実験用ゴム組成物の数は4〜8、さらには4でよい。重回帰分析だと、実験用ゴム組成物の数は10を超えるものとなる。   Since single regression analysis is possible, the number of experimental rubber compositions may be 4-8, or even 4. In the multiple regression analysis, the number of experimental rubber compositions exceeds 10.

上記配列表の例1でL4直行配列表とすれば、たとえば、(1)、(4)、(6)および(7)の配合などを選択できる。   If the L4 orthogonal array table is used in Example 1 of the above array table, for example, the combination of (1), (4), (6) and (7) can be selected.

実験用ゴム組成物の調製、加硫は通常の方法でよく、たとえばバンバリーミキサーなどで混練し、160℃、20分間という条件で加硫する。   Preparation and vulcanization of the experimental rubber composition may be carried out by a usual method. For example, the rubber composition is kneaded with a Banbury mixer and vulcanized at 160 ° C. for 20 minutes.

かくして作製した実験用ゴム組成物のtanδおよびE*のデータを取得する。   Data of tan δ and E * of the experimental rubber composition thus prepared are obtained.

tanδおよびE*の測定はいずれも、レオメトリックス社製の粘弾性測定装置を用いて行う。   Both tan δ and E * are measured using a rheometrics viscoelasticity measuring device.

こうして各実験用ゴム組成物のtanδ/E*nを求めておく。 Thus, tan δ / E * n of each experimental rubber composition is obtained.

ついで、実験用ゴム組成物をトレッドとして有するタイヤを作製し、実車による実走行試験を行い、グリップ特性データを取得する。   Next, a tire having the rubber composition for experiment as a tread is manufactured, and an actual running test is performed with an actual vehicle to acquire grip characteristic data.

グリップ特性データとしては、タイヤのグリップ力に相関して変化する、たとえばサーキット(またはテストコース)の区間タイム、乾燥路面でのブレーキイングにおける停止距離、湿潤路面でのブレーキイングにおける停止距離などが好ましい。   As the grip characteristic data, for example, a section time of a circuit (or test course), a stopping distance in braking on a dry road surface, a stopping distance in braking on a wet road surface, etc. that change in correlation with the grip force of the tire are preferable. .

得られたグリップ特性データ値を縦軸としtanδ/E*nの値を横軸とする(またはその逆)グラフにプロットし、単回帰式を導き出す。 The obtained grip characteristic data value is plotted on the vertical axis and the value of tan δ / E * n is plotted on the horizontal axis (or vice versa), and a single regression equation is derived.

導き出した単回帰式を用いれば、ゴム組成物のtanδおよびE*を測定することにより、そのゴム組成物をトレッドとするタイヤのグリップ特性が評価できる。   By using the derived single regression equation, the grip characteristics of a tire having the rubber composition as a tread can be evaluated by measuring tan δ and E * of the rubber composition.

本発明の評価方法は、2輪車のタイヤ、4輪車のタイヤのいずれにおいても行うことができる。   The evaluation method of the present invention can be performed on any of two-wheeled vehicle tires and four-wheeled vehicle tires.

実施例にもとづいて本発明を詳細に説明するが、本発明はこれらのみに限定されるものではない。   The present invention will be described in detail based on examples, but the present invention is not limited to these examples.

実施例1
実験用ゴム組成物として、前記直行配列表の例1のうち、(1)、(4)、(6)および(7)の配合を選択し、他の成分を表2の処方(重量部)で配合してゴム組成物A〜Dをそれぞれ作製した。
Example 1
As the experimental rubber composition, the composition of (1), (4), (6) and (7) is selected from Example 1 of the above-mentioned orthogonal arrangement table, and the other ingredients are formulated as shown in Table 2 (parts by weight). And rubber compositions A to D were prepared respectively.

Figure 0005091587
Figure 0005091587

なお、表2中の各成分は、以下のとおりである。
SBR1:SBR 1712(住友化学工業(株)製のSBR)
SBR2:SBR HS1(住友化学工業(株)製のSBR)
カーボンブラック:三菱化学(株)製のN220
硫黄:軽井沢硫黄(株)製の粉末硫黄
ワックス:日本精鑞(株)製のオゾエース0355
老化防止剤:住友化学工業(株)製のアンチゲン6C(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「椿」
酸化亜鉛:三井金属鉱業(株)製の亜鉛華1号
オイル:出光興産(株)製のNH−60
加硫促進剤:大内新興化学工業(株)製のノクセラーCZ(N−シクロヘキシル−2−ベンゾチアゾリルスルフェンアミド)
In addition, each component in Table 2 is as follows.
SBR1: SBR 1712 (SBR manufactured by Sumitomo Chemical Co., Ltd.)
SBR2: SBR HS1 (SBR manufactured by Sumitomo Chemical Co., Ltd.)
Carbon black: N220 manufactured by Mitsubishi Chemical Corporation
Sulfur: Powder sulfur wax manufactured by Karuizawa Sulfur Co., Ltd .: Ozoace 0355 manufactured by Nippon Seiki Co., Ltd.
Anti-aging agent: Antigen 6C (N- (1,3-dimethylbutyl) -N′-phenyl-p-phenylenediamine) manufactured by Sumitomo Chemical Co., Ltd.
Stearic acid: Stearic acid “Kashiwa” manufactured by NOF Corporation
Zinc oxide: Zinc Hua 1 oil manufactured by Mitsui Mining & Smelting Co., Ltd. Oil: NH-60 manufactured by Idemitsu Kosan Co., Ltd.
Vulcanization accelerator: Noxeller CZ (N-cyclohexyl-2-benzothiazolylsulfenamide) manufactured by Ouchi Shinsei Chemical Co., Ltd.

これらの各ゴム組成物A〜Dについて、n=0.8、測定温度75℃、初期歪み20%、振幅歪5%、周波数20Hzにて伸長モードでtanδおよびE*を測定し、tanδ/E*0.8を求めた。結果を表3に示す。tanδおよびE*はゴム組成物Aの測定値を1としたときの指数評価としている。 For each of these rubber compositions A to D, tan δ and E * were measured in an elongation mode at n = 0.8, measurement temperature 75 ° C., initial strain 20%, amplitude strain 5%, frequency 20 Hz, and tan δ / E. * 0.8 was obtained. The results are shown in Table 3. Tan δ and E * are index evaluations when the measured value of the rubber composition A is 1.

ついで、各実験用ゴム組成物A〜Dをトレッドとして有するタイヤA〜D(205/60R15)を作製し、これらのタイヤA〜Dを装着した実車(排気量2000ccの4輪車)による乾燥路面(JARIのブレーキ路)での制動試験を行い、停止距離(m)を計った。結果を表3に示す。   Next, tires A to D (205 / 60R15) having the respective rubber compositions A to D for experiments as treads were produced, and a dry road surface by an actual vehicle (a four-wheel vehicle having a displacement of 2000 cc) equipped with the tires A to D. A braking test was performed on (JARI brake road), and the stopping distance (m) was measured. The results are shown in Table 3.

Figure 0005091587
Figure 0005091587

得られた各データを、停止距離(m)をX軸としtanδ/E*0.8の値をY軸とするグラフにプロットしたところ(図1)、停止距離(グリップ力)とtanδ/E*0.8がよく相関することが分かった。▲はタイヤA、●はタイヤB、■はタイヤC、◆はタイヤDである。 Each data obtained was plotted on a graph with the stop distance (m) as the X axis and the value of tan δ / E * 0.8 as the Y axis (FIG. 1). As a result, the stop distance (grip force) and tan δ / E * 0.8 were plotted. Was found to correlate well. ▲ is tire A, ● is tire B, ■ is tire C, and ◆ is tire D.

このデータから単回帰式II:
tanδ/E*0.8=−0.0492×停止距離(m)+3.0819
を導き出した(相関係数をRとすると、R2=0.9776)。
From this data, single regression equation II:
tan δ / E * 0.8 = −0.0492 × stop distance (m) +3.0819
(R 2 = 0.9776 where R is the correlation coefficient).

実施例1で測定した停止距離をX軸としtanδ/E*0.8の値をY軸とするグラフであって、停止距離とtanδ/E*0.8が相関していることを示すグラフである。It is a graph which makes the stop distance measured in Example 1 the X-axis, and makes the value of tanδ / E * 0.8 the Y-axis, and shows that the stop distance and tanδ / E * 0.8 are correlated.

Claims (2)

ゴム組成物を含むトレッドを有するタイヤにおいて、直行配列表を用いて、損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成のゴム組成物を作製し、該ゴム組成物のtanδ/E*nを変数とする単回帰式によりタイヤのグリップ特性を分析するグリップ特性の評価方法。 In a tire having a tread containing a rubber composition, a rubber composition having a composition in which the loss tangent tan δ and the complex elastic modulus E * do not correlate with each other at any temperature and amplitude strain is prepared using an orthogonal array table. A method for evaluating grip characteristics, in which the grip characteristics of a tire are analyzed by a single regression equation using tan δ / E * n of a rubber composition as a variable. ゴム組成物におけるパラメータとして、
(1)ゴム成分の種類または配合量、
(2)カーボンブラックの種類または配合量、および
(3)硫黄の配合量および/または加硫促進剤の種類と配合量
を選択し、これらのパラメータで直行配列表を組み、この実験計画表に従って、損失正接tanδと複素弾性率E*とがいずれの温度および振幅歪においても互いに相関しない組成の実験用ゴム組成物を作製し、該実験用ゴム組成物のtanδおよびE*nのデータを取得し、さらに該実験用ゴム組成物をトレッドとして有するタイヤの実走行試験によりグリップ特性データを取得し、前記関係:tanδ/E*nを変数とするグリップ特性の単回帰式を導き、この単回帰式に従って該実験用ゴム組成物の組成からタイヤのグリップ特性を分析する請求項1記載の評価方法。
As a parameter in the rubber composition,
(1) Type or amount of rubber component,
(2) Carbon black type or blending amount, and (3) sulfur blending amount and / or vulcanization accelerator type and blending amount are selected, and an orthogonal array is assembled with these parameters. An experimental rubber composition having a composition in which the loss tangent tan δ and the complex elastic modulus E * do not correlate with each other at any temperature and amplitude strain is prepared, and data on the tan δ and E * n of the experimental rubber composition is obtained. Further, grip characteristic data was obtained by an actual running test of a tire having the experimental rubber composition as a tread, and a single regression equation of grip characteristics with the above relationship: tan δ / E * n as a variable was derived, and this single regression The evaluation method according to claim 1, wherein grip characteristics of the tire are analyzed from the composition of the experimental rubber composition according to a formula.
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* Cited by examiner, † Cited by third party
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112014010345A2 (en) 2011-11-01 2017-04-18 Sumitomo Rubber Ind Method for evaluation of elastic modulus of repulsion, hardness and energy loss of polymer material
JP5658219B2 (en) 2012-11-21 2015-01-21 住友ゴム工業株式会社 Method for evaluating energy loss, chipping resistance and wear resistance of polymer materials
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Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2895538B2 (en) * 1989-12-18 1999-05-24 株式会社ブリヂストン Pair of motorcycle pneumatic tires
JP2634704B2 (en) * 1991-03-04 1997-07-30 東洋ゴム工業株式会社 Pneumatic tire
JP3359958B2 (en) * 1993-10-14 2002-12-24 株式会社ブリヂストン Pneumatic tire for motorcycles with spiral belt structure
JP3589517B2 (en) * 1995-11-28 2004-11-17 住友ゴム工業株式会社 Rubber composition for tread
JP3079028B2 (en) * 1995-11-30 2000-08-21 住友ゴム工業株式会社 Pneumatic tire
JP3646956B2 (en) * 1997-05-14 2005-05-11 株式会社ブリヂストン Industrial filling tire
JP3996777B2 (en) * 2002-01-22 2007-10-24 住友ゴム工業株式会社 Tread rubber for tires
JP2003221466A (en) * 2002-01-29 2003-08-05 Sumitomo Rubber Ind Ltd Rubber for tire tread
JP4011382B2 (en) * 2002-04-03 2007-11-21 住友ゴム工業株式会社 Pneumatic tire
JP4687159B2 (en) * 2005-03-11 2011-05-25 横浜ゴム株式会社 Pneumatic tire
JP4940675B2 (en) * 2006-01-31 2012-05-30 横浜ゴム株式会社 Method for predicting temperature dependence of friction coefficient of tire

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112566795A (en) * 2018-10-16 2021-03-26 住友橡胶工业株式会社 Tyre for vehicle wheels
CN112566795B (en) * 2018-10-16 2022-03-22 住友橡胶工业株式会社 Tyre for vehicle wheels

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