JPH03166241A - Tread rubber composition for studless tire - Google Patents
Tread rubber composition for studless tireInfo
- Publication number
- JPH03166241A JPH03166241A JP1305157A JP30515789A JPH03166241A JP H03166241 A JPH03166241 A JP H03166241A JP 1305157 A JP1305157 A JP 1305157A JP 30515789 A JP30515789 A JP 30515789A JP H03166241 A JPH03166241 A JP H03166241A
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- weight
- parts
- glass beads
- rubber composition
- 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
- 229920001971 elastomer Polymers 0.000 title claims abstract description 32
- 239000005060 rubber Substances 0.000 title claims abstract description 32
- 239000000203 mixture Substances 0.000 title claims abstract description 14
- 239000011324 bead Substances 0.000 claims abstract description 17
- 239000011521 glass Substances 0.000 claims abstract description 16
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 7
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 7
- 229920001194 natural rubber Polymers 0.000 claims abstract description 7
- 150000001993 dienes Chemical class 0.000 claims abstract description 6
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 6
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 235000014692 zinc oxide Nutrition 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 3
- 235000021355 Stearic acid Nutrition 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004898 kneading Methods 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
- 239000008117 stearic acid Substances 0.000 description 2
- 241000209761 Avena Species 0.000 description 1
- 235000007319 Avena orientalis Nutrition 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 239000006237 Intermediate SAF Substances 0.000 description 1
- UTGQNNCQYDRXCH-UHFFFAOYSA-N N,N'-diphenyl-1,4-phenylenediamine Chemical compound C=1C=C(NC=2C=CC=CC=2)C=CC=1NC1=CC=CC=C1 UTGQNNCQYDRXCH-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 239000005355 lead glass Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc 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）
本発明は凍結路面上で優れた制動性能を有するスタンド
レスタイヤ用トレンドゴム組或物に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a trend rubber assembly for standless tires that has excellent braking performance on frozen road surfaces.
（従来の技術と課題）
従来凍結路面では、車の走行に際して制動性能を確保す
るためスパイクタイヤ（スタッドがトレッド表面に打ち
込まれたタイヤ〉やタイヤチェ−ンが使用されてきた。(Prior Art and Issues) Conventionally, spiked tires (tires with studs driven into the tread surface) and tire chains have been used to ensure braking performance when driving on frozen roads.
しかし、スパイクタイヤやタイヤチェーンの使用では、
乾燥路面の損傷及び粉塵公害が大きな問題となっており
、スパイクやチェーンを必要としないタイヤトレッドの
開発が早急な課題となっていた。However, when using spiked tires or tire chains,
Damage to dry road surfaces and dust pollution have become major problems, and the development of tire treads that do not require spikes or chains has become an urgent issue.
そこで、乾燥路面に損傷を生じさせず、凍結路面で良好
な制動性能を有するスタッドレスタイヤ用トレッドゴム
ｍ戒物の開発が試みられている。Therefore, attempts have been made to develop tread rubber materials for studless tires that do not cause damage to dry road surfaces and have good braking performance on frozen road surfaces.
また、トレンドゴム中にセラミック微粉を添加すること
も行われている。Additionally, ceramic fine powder is also added to trend rubber.
しかしながら、氷上での制動性能が十分とは言えず、そ
の向上が望まれている。However, the braking performance on ice is not sufficient, and improvements are desired.
本発明はかかる問題点に鑑みなされたもので、乾燥路面
において路面の損傷を生じさせず、かつ凍結路面におけ
る制動性能に優れたスタッドレスタイヤ用トレッドゴム
組成物を提供することを目的とする。The present invention was made in view of such problems, and an object of the present invention is to provide a tread rubber composition for studless tires that does not cause damage to the road surface on dry road surfaces and has excellent braking performance on frozen road surfaces.
（課題を解決するための手段）
上記目的を達戊するためになされた本発明のゴム組成物
は、天然ゴムおよび、またはジェン系合威ゴムを主体と
したスタッドレスタイヤ用トレンドゴム組或物において
、ゴム１００重量部に対して平均粒子径が５０〜２２０
μｍのガラスビーズを５〜４０重量部配合したことを発
明の構威とするものである。(Means for Solving the Problems) The rubber composition of the present invention, which has been made to achieve the above object, can be used in trend rubber assemblies for studless tires mainly made of natural rubber and/or Gen-based Hewei rubber. , the average particle size is 50 to 220 per 100 parts by weight of rubber.
The main feature of the invention is that 5 to 40 parts by weight of micrometer glass beads are blended.
前記ジエン系合或ゴムとしては、主としてポリプタジエ
ンゴム（ＢＲ）が使用されるが、スチレンブタジエンゴ
ム（Ｓ Ｂ Ｒ）等の他のジエン系合成ゴムも複合して
使用される．また、天然ゴムにはイソプレンゴムを含む
．ゴムの配合については、通常、天然ゴム６０〜７０重
量部、ジエン系合成ゴム４０〜３０重量部とされる。尚
、この配合は、従来のスタンドレスタイヤのトレンドゴ
ム組威に該当スるものである。As the diene synthetic rubber, polyptadiene rubber (BR) is mainly used, but other diene synthetic rubbers such as styrene-butadiene rubber (SBR) are also used in combination. Natural rubber also includes isoprene rubber. The rubber composition is usually 60 to 70 parts by weight of natural rubber and 40 to 30 parts by weight of diene synthetic rubber. Note that this formulation corresponds to the trending rubber composition of conventional standless tires.
前記ガラスビーズは、その形態が球形ないし大略球形を
しており、材質としてはソーダー石灰ガラス、石英ガラ
ス、硼珪酸ガラス、鉛ガラス等を使用することができる
。The glass beads have a spherical or approximately spherical shape, and can be made of soda lime glass, quartz glass, borosilicate glass, lead glass, or the like.
尚、本発明のゴム組或物には、前記ガラスビーズのほか
、トレッドゴムとして通常配合されるカ一ボンブラック
、亜鉛華、ステアリン酸、老化防止剤、伸展油、加硫促
進剤、硫黄等を適宜含有する。また、低温におけるゴム
弾性を向上させるために必要に応じてナフテン系オイル
が配合される。In addition to the above-mentioned glass beads, the rubber composition of the present invention also contains carbon black, zinc white, stearic acid, anti-aging agent, extender oil, vulcanization accelerator, sulfur, etc., which are usually compounded in tread rubber. Contains as appropriate. Furthermore, naphthenic oil is blended as necessary to improve rubber elasticity at low temperatures.
ゴム１００重量部に対してカーボンブラックは４０〜８
０重量部程度、ナフテン系オイルは１０〜３０重量部程
度である。Carbon black is 40 to 8 parts by weight per 100 parts by weight of rubber.
The naphthenic oil is about 10 to 30 parts by weight.
（作 用）
本発明のスタンドレスタイヤ用トレッドゴム組成物には
、所定のガラスビーズが配合されているので、該ビーズ
によるタイヤトレッド表面の微細な凹凸により、氷上摩
擦係数を向上させることができ、凍結路面における制動
性能を向上させることができる。一方、ガラスビーズは
トレッドゴムの摩耗とともに脱落するため、路面を損傷
させるおそれがない。(Function) Since the tread rubber composition for standless tires of the present invention contains predetermined glass beads, the coefficient of friction on ice can be improved due to the fine irregularities on the tire tread surface caused by the beads. , braking performance on frozen road surfaces can be improved. On the other hand, glass beads fall off as the tread rubber wears, so there is no risk of damaging the road surface.
ガラスビーズは、その形態より、リン片状や不定形のセ
ラξツク粒子に比べてゴム中に均一に分敗埋入される。Due to their shape, glass beads are more uniformly decomposed and embedded in rubber than flake-like or irregularly shaped ceramic particles.
また、トレッドゴムにいかに埋入されようと、ガラスビ
ーズと路面との接触面積および接触形状は変わらないた
め、常に安定した氷上摩擦係数を有する。尚、セラミッ
ク粒子のように非球形のものは、路面との接触面積およ
び接触形状が一様でないため、常に氷上摩擦係数を向上
させておくことが困難である。Furthermore, no matter how embedded the glass beads are in the tread rubber, the contact area and contact shape between the glass beads and the road surface do not change, so they always have a stable coefficient of friction on ice. In addition, since non-spherical particles such as ceramic particles have uneven contact area and contact shape with the road surface, it is difficult to constantly improve the coefficient of friction on ice.
前記ガラスビーズは以下の理由により、平均粒子径５０
〜２２０μｍのものが使用される。すなわち、粒子径が
５０μｍ未満では過小なため氷上摩擦係数の向上に乏し
い。一方、２２０μｍを越えると耐摩耗性の低下が著し
い。The glass beads have an average particle diameter of 50 for the following reasons.
~220 μm is used. That is, if the particle diameter is less than 50 μm, the coefficient of friction on ice will not be improved because it is too small. On the other hand, when the thickness exceeds 220 μm, the wear resistance is significantly reduced.
また、ゴム１００重量部に対してガラスビーズを５〜４
０重量部配合するのは、５重量部未満では氷上での摩擦
係数を高めることが困難であり、一方４０重量部を越え
るとバンバリー果キサーやロールによる混練り等の加工
性の低下が著しくなるからである。尚、好ましくは１０
〜３０重量部である。In addition, 5 to 4 glass beads are added to 100 parts by weight of rubber.
If 0 parts by weight is included, it is difficult to increase the coefficient of friction on ice if it is less than 5 parts by weight, while if it exceeds 40 parts by weight, the processability such as kneading with a Banbury fruit mixer or rolls will be significantly reduced. It is from. In addition, preferably 10
~30 parts by weight.
（実施例）
以下、本発明の実施例を従来例および比較例と共に掲げ
て説明する。(Example) Examples of the present invention will be described below along with conventional examples and comparative examples.
（１）天然ゴム７０重量部およびポリブタジエンゴム３
０重量部からなるブレンドゴム１００重量部に対して第
１表のガラスビーズおよびセラミック粒子並びに下記の
添加剤（但し、亜鉛華、加硫促進剤、硫黄を除く。）を
添加し、バンバリーミキサーにより混合した後、これに
亜鉛華等の残りの添加剤を添加してロールにて混練した
。そして、未加硫ゴムをプレス加硫（条件７ １５０
″Ｃ×３０分）して試料を作成した。尚、Ｎｏ．ｌ３の
セラミック粒子はＴｉ， ＡＩ， Ｚｒ， Ｓｉ等の金
属酸化物の焼或体である。(1) 70 parts by weight of natural rubber and 3 parts by weight of polybutadiene rubber
Glass beads and ceramic particles shown in Table 1 and the following additives (excluding zinc white, vulcanization accelerator, and sulfur) were added to 100 parts by weight of the blended rubber consisting of 0 parts by weight, and mixed with a Banbury mixer. After mixing, the remaining additives such as zinc white were added and kneaded using a roll. Then, press vulcanize the unvulcanized rubber (condition 7 150
"C x 30 minutes)" to prepare a sample.The ceramic particles No. 13 are calcined bodies of metal oxides such as Ti, AI, Zr, and Si.
０添加剤（単位重量部）
ＩＳＡＦカーボンブラック：４５
亜 鉛 華 ＝ ４ステアリン
酸 ＝ ２
老化防止剤 ＤＰＰＤ：２
パラフィン系ワックス ： １
ナフテン系オイル ：１０
加硫促進剤 ＭＳＡ：１
硫 黄 ：１．５（２）
ロールによる混練りの際、基地の加工性を目視にて観察
し、基地シートのロール表面からの浮き上がり （バギ
ングという。）の程度により加工性を評価した。その結
果を第１表に示した。0 additives (unit weight part) ISAF carbon black: 45 Zinc flower = 4 Stearic acid = 2 Anti-aging agent DPPD: 2 Paraffin wax: 1 Naphthenic oil: 10 Vulcanization accelerator MSA: 1 Sulfur: 1. 5(2)
During kneading with rolls, the workability of the base was visually observed, and the workability was evaluated based on the degree of lifting of the base sheet from the roll surface (referred to as bagging). The results are shown in Table 1.
表中、○はバギングの発生がないもの、△はやや発生し
たが支障のないもの、×は発生が著しく工業生産には適
さないものである。In the table, ◯ indicates that no bagging occurred, △ indicates that bagging occurred slightly but was not a problem, and × indicates that bagging occurred significantly and was not suitable for industrial production.
（３）また、加硫後の試料の物性を調べた。その結果に
ついても第１表に併せて示した。同表中、低温摩擦係数
は、−５℃の雰囲気中の平滑水面に対するものであり、
比較例のＭ１を１００としたときの指数で示した。ビコ
摩耗指数は比較例ｌの摩耗量を１００としたときの指数
であり、低温摩擦係数とも指数の大きいもの程優れる。(3) In addition, the physical properties of the sample after vulcanization were investigated. The results are also shown in Table 1. In the same table, the low-temperature friction coefficient is for a smooth water surface in an atmosphere of -5°C,
It is shown as an index when M1 of the comparative example is set to 100. The Vico wear index is an index when the wear amount of Comparative Example 1 is taken as 100, and the larger the index is, the better the low-temperature friction coefficient is.
（４）評価
第１表より、本発明の実施例によれば、ガラスビーズの
粒子寸法、配合量を所定の範囲としているので、低温摩
擦係数が従来のスタソドレスタイヤのトレンドゴム組成
物（Ｆｂｌおよび１３）の低温摩擦係数に対して１０％
程度以上向上しており、本発明のゴム組或物の凍結路面
での制動性能の向上が期待できる。尚、実施例のゴム組
底物の耐摩耗性は、従来例に比較して多くて２０％程度
低下しているが、この程度の低下では実用上許容限度内
である。(4) Evaluation Table 1 shows that according to the examples of the present invention, the particle size and blending amount of the glass beads are within a predetermined range, so that the low-temperature friction coefficient is lower than that of the trend rubber composition for conventional staso dress tires. 10% to the low temperature friction coefficient of Fbl and 13)
It can be expected that the braking performance of the rubber assembly of the present invention on frozen road surfaces will be improved. The abrasion resistance of the rubber assembly sole of the example is reduced by at most about 20% compared to the conventional example, but this level of reduction is within the practically acceptable limit.
実施例に対して、粒子径が本発明範囲外のＮα２，６は
、過小のものでは低温摩擦係数の向上が期待できず、一
方過大のものでは耐摩耗性の低下が著しい。また、配合
量が本発明範囲外のＮｏ．７．１２は、過少のものでは
低温摩擦係数の向上が望めず、一方過多のものでは加工
性が著しく悪い。In contrast to the examples, if the particle diameter of Nα2,6 is outside the range of the present invention, if it is too small, no improvement in the low-temperature friction coefficient can be expected, while if it is too large, the wear resistance will be significantly reduced. In addition, No. 1 whose blending amount is outside the range of the present invention. If 7.12 is too small, no improvement in the low-temperature friction coefficient can be expected, while if it is too large, workability will be extremely poor.
（発明の効果）
以上説明した通り、本発明のスタッドレスタイヤ用トレ
ッドゴム組成物は、ゴム１００重量部に対し、所定寸法
のガラスビーズを５〜４０重量部配合したので、加工性
を損なうことなく、また耐摩耗性の低下を実用上許容可
能な範囲に止めると共に氷上における摩擦係数を１０％
程度以上向上させることができ、これによってタイヤの
凍結路面における制動性能の向上を図ることができる。(Effects of the Invention) As explained above, the tread rubber composition for studless tires of the present invention contains 5 to 40 parts by weight of glass beads of a predetermined size with respect to 100 parts by weight of rubber, without impairing processability. In addition, the decrease in wear resistance is kept within a practically acceptable range, and the coefficient of friction on ice is reduced by 10%.
This makes it possible to improve the braking performance of tires on frozen road surfaces.
しかも、 乾燥路面において、 路面に損傷を生じさせるおそ れもない。Moreover, On a dry road surface, May cause damage to the road surface. There is no such thing.
特 許 出 願 人 オーツタイヤ株式会社Special permission Out wish Man Oats Tire Co., Ltd.
Claims (1)
としたスタッドレスタイヤ用トレッドゴム組成物におい
て、 ゴム１００重量部に対して平均粒子径が５０〜２２０μ
ｍのガラスビーズを５〜４０重量部配合したことを特徴
とするスタッドレスタイヤ用トレッドゴム組成物。(1) In a tread rubber composition for studless tires mainly composed of natural rubber and/or diene-based synthetic rubber, the average particle diameter is 50 to 220 μm based on 100 parts by weight of rubber.
A tread rubber composition for a studless tire, comprising 5 to 40 parts by weight of glass beads of m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1305157A JPH03166241A (en) | 1989-11-24 | 1989-11-24 | Tread rubber composition for studless tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1305157A JPH03166241A (en) | 1989-11-24 | 1989-11-24 | Tread rubber composition for studless tire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03166241A true JPH03166241A (en) | 1991-07-18 |
Family
ID=17941756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1305157A Pending JPH03166241A (en) | 1989-11-24 | 1989-11-24 | Tread rubber composition for studless tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03166241A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6026880A (en) * | 1995-12-28 | 2000-02-22 | Huels Aktiengesellschaft | Process and apparatus for the purification of commercially available diphenyl-p-phenylenediamine (DPPD) |
| US6398917B1 (en) | 1995-12-28 | 2002-06-04 | Degussa-Huels Aktiengesellschaft | Apparatus for the purification of commercially available diphenyl-p-phenylenediamine (DPPD) |
| WO2007123285A1 (en) * | 2006-04-21 | 2007-11-01 | Yongjin Fine Chemical Co., Ltd. | Coating composition for green tires |
| JP2009024043A (en) * | 2007-07-17 | 2009-02-05 | Sumitomo Rubber Ind Ltd | Rubber composition for tire and pneumatic tire |
| JP2009079077A (en) * | 2007-09-25 | 2009-04-16 | Sumitomo Rubber Ind Ltd | Rubber composition for tire, cap tread and tire |
-
1989
- 1989-11-24 JP JP1305157A patent/JPH03166241A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6026880A (en) * | 1995-12-28 | 2000-02-22 | Huels Aktiengesellschaft | Process and apparatus for the purification of commercially available diphenyl-p-phenylenediamine (DPPD) |
| US6398917B1 (en) | 1995-12-28 | 2002-06-04 | Degussa-Huels Aktiengesellschaft | Apparatus for the purification of commercially available diphenyl-p-phenylenediamine (DPPD) |
| WO2007123285A1 (en) * | 2006-04-21 | 2007-11-01 | Yongjin Fine Chemical Co., Ltd. | Coating composition for green tires |
| JP2009024043A (en) * | 2007-07-17 | 2009-02-05 | Sumitomo Rubber Ind Ltd | Rubber composition for tire and pneumatic tire |
| JP2009079077A (en) * | 2007-09-25 | 2009-04-16 | Sumitomo Rubber Ind Ltd | Rubber composition for tire, cap tread and tire |
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