JPH072872B2 - Rubber composition for tires - Google Patents
Rubber composition for tiresInfo
- Publication number
- JPH072872B2 JPH072872B2 JP1049674A JP4967489A JPH072872B2 JP H072872 B2 JPH072872 B2 JP H072872B2 JP 1049674 A JP1049674 A JP 1049674A JP 4967489 A JP4967489 A JP 4967489A JP H072872 B2 JPH072872 B2 JP H072872B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- parts
- rubber composition
- weight
- hardness
- 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.)
- Expired - Lifetime
Links
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- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は特に氷結路、積雪路用に適したタイヤに好適に
用いられるゴム組成物に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rubber composition which is preferably used for a tire suitable for an icy road and a snowy road.
（従来の技術） ゼラチンは同一分子内に親水基と疎水基とが適度に分布
して存在することなどの理由により吸・放湿性に優れ
る。(Prior Art) Gelatin excels in water absorption and desorption due to the reason that a hydrophilic group and a hydrophobic group are present in an appropriate distribution in the same molecule.
そこでゼラチンとゴムを複合化し氷上制動性に優れたゴ
ム状粘弾性体が得られないかと鋭意検討した。このよう
な観点のもとに検討された技術は過去に全く存在しな
い。Therefore, we diligently investigated whether a rubber-like viscoelastic body having excellent braking performance on ice could be obtained by combining gelatin and rubber. In the past, no technology has been studied from such a viewpoint.
（発明が解決しようとする課題） 本発明の目的は氷結路、積雪路用に適したタイヤに好適
に用いられるゴム組成物を提供することにある。(Problem to be Solved by the Invention) An object of the present invention is to provide a rubber composition which is preferably used for a tire suitable for an icy road and a snowy road.
（課題を解決するための手段） 本発明は天然ゴム、ブタジエンゴム、スチレンブタジエ
ンゴム、イソプレンゴム及びブチルゴムから選ばれた１
種又は２種以上のゴム100重量部に対して、平均粒径が2
0〜450μｍのゼラチンパウダーを５〜50重量部、カーボ
ンブラックを30〜100重量部、ナフテンオイルを配合
し、ASTM D2240に従って−15℃で測定した硬度と23℃で
測定した硬度の差が５以下であるタイヤ用ゴム組成物に
係る。(Means for Solving the Problems) The present invention is 1 selected from natural rubber, butadiene rubber, styrene-butadiene rubber, isoprene rubber and butyl rubber.
100 parts by weight of one or more rubbers, the average particle size is 2
5 to 50 parts by weight of 0 to 450 μm gelatin powder, 30 to 100 parts by weight of carbon black, and naphthene oil are mixed, and the difference between the hardness measured at -15 ° C and the hardness measured at 23 ° C according to ASTM D2240 is 5 or less. The present invention relates to a rubber composition for a tire.
本発明のゴム組成物のゴム成分としては非極性の天然ガ
ス（NR）、ブタジエンゴム（BR）、スチレンブタジエン
ゴム（SBR）、イソプレンゴム（IR）、ブチルゴム（II
R）及びこれらのブレンドが使用され、ニトリルゴム、
クロロプレンのような極性ゴムは温度の低下に伴う硬度
の上昇が大きいので好ましくない。As the rubber component of the rubber composition of the present invention, non-polar natural gas (NR), butadiene rubber (BR), styrene butadiene rubber (SBR), isoprene rubber (IR), butyl rubber (II
R) and blends thereof are used, nitrile rubber,
A polar rubber such as chloroprene is not preferable because the hardness increases greatly with a decrease in temperature.
本発明のゴム組成物に配合されるゼラチンの平均粒径は
20〜450μｍの範囲が好ましい。粒径が450μｍを越える
と、加硫ゴムの氷上制動性はやや向上するものの耐摩耗
性は悪化する。ゼラチンの添加量は一般にゴム成分100
部（重量部、以下同様）に対して約５〜50部が好まし
く、約10〜40部がより好ましい。The average particle size of gelatin blended in the rubber composition of the present invention is
The range of 20 to 450 μm is preferable. When the particle size exceeds 450 μm, the vulcanized rubber has a slightly improved braking property on ice, but the wear resistance is deteriorated. Generally, the amount of gelatin added is 100 for the rubber component.
About 5 to 50 parts is preferred, and about 10 to 40 parts is more preferred, relative to parts (parts by weight, the same applies below).
ゼラチンをゴムに練り込み物理、化学的に複合化するこ
とにより、天然高分子材料としてのゼラチンの持つ優れ
た低温特性が寄与し、ゴム組成物の低温での硬度の上り
方が小さくなり、氷上摩擦係数が向上する。このような
ゴム組成物をタイヤトレッドや靴底に使用することによ
り、氷上摩擦係数、特に−５℃付近の氷上面疑似液体層
存在下での摩擦係数が向上する。By kneading gelatin into rubber to form a physical and chemical complex, the excellent low-temperature characteristics of gelatin as a natural polymer material contribute to the decrease in hardness of the rubber composition at low temperatures, and Friction coefficient is improved. By using such a rubber composition for a tire tread or a shoe sole, the coefficient of friction on ice, in particular, the coefficient of friction in the presence of a pseudo liquid layer on the ice top near -5 ° C is improved.
更に、充填剤としてはカーボンブラツクをゴム100部に
対して30〜100部配合するのが良い。Further, as a filler, it is preferable to mix 30 to 100 parts of carbon black with 100 parts of rubber.
本発明においては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、老化防止剤、粘着付
与剤、着色剤等を添加できることは勿論である。In the present invention, in addition to the above-mentioned components, known vulcanizing agents, vulcanization accelerators, vulcanization accelerating aids, vulcanization retarders, antiaging agents, tackifiers, coloring agents and the like can be added.
本発明のゴム組成物は上記成分を通常の加工装置、例え
ばロール、バンバリーミキサー、ニーダーなどにより混
練することにより得られる。The rubber composition of the present invention can be obtained by kneading the above components with a conventional processing device such as a roll, a Banbury mixer or a kneader.
（発明の効果） 本発明のタイヤ用ゴム組成物は優れた低温特性を有し、
特に氷結路、積雪路における使用に適している。(Effect of the invention) The rubber composition for a tire of the present invention has excellent low-temperature properties,
Especially suitable for use on icy roads and snowy roads.
（実施例） 以下に実施例及び比較例を挙げて説明する。尚、単に部
とあるは重量部を示す。(Example) Below, an example and a comparative example are given and demonstrated. Incidentally, "parts" means "parts by weight".
実施例及び比較例 第１表に記載のゴム100部、カーボンブラツクN339（70
部）、ゼラチンパウダー各部、ナフテンオイル50部、亜
鉛華３部、ステアリン酸２部、老化防止剤（サントフレ
ツクス13）１部、パラフインワツクス１部、加硫促進剤
（CBS）1.4部及び硫黄２部を、バンバリーミキサーによ
り４分間充分に混練しゴム組成物を得、これを160℃で2
0分間、モールド加硫した。硬度はASTM D2240に従つて
−15℃と23℃での値を測定しその差をΔ硬度として表示
した。値の小さいものほど低温特性は良好である。氷上
制動性はスタンレー社製のポータブルスキツドレジスタ
ンステスターを用いて−５℃と−15℃にて測定し、値を
指数にてゴム配合No.9を100として表示した。値が大き
いほど氷上制動性は良好である。使用したBRはハイシス
BR、SBRはスチレン含有率10％の溶液重合SBRである。結
果を第１表に示す。尚、配合No.1〜７は実施例であり、
他は比較例である。Examples and Comparative Examples 100 parts of rubber listed in Table 1, carbon black N339 (70
Part), each part of gelatin powder, 50 parts of naphthene oil, 3 parts of zinc white, 2 parts of stearic acid, 1 part of antioxidant (Santofrex 13), 1 part of paraffin wax, 1.4 parts of vulcanization accelerator (CBS) and 2 parts of sulfur was thoroughly kneaded with a Banbury mixer for 4 minutes to obtain a rubber composition.
Mold vulcanization was performed for 0 minutes. The hardness was measured according to ASTM D2240 at −15 ° C. and 23 ° C., and the difference was expressed as Δ hardness. The lower the value, the better the low temperature characteristics. The braking ability on ice was measured at -5 ° C and -15 ° C using a portable skid resistance tester manufactured by Stanley Co., Ltd., and the value was indexed and rubber compound No. 9 was indicated as 100. The larger the value, the better the braking performance on ice. BR used is high cis
BR and SBR are solution-polymerized SBR with a styrene content of 10%. The results are shown in Table 1. In addition, compound Nos. 1 to 7 are examples,
Others are comparative examples.
Claims (1)
ジエンゴム、イソプレンゴム及びブチルゴムから選ばれ
た１種又は２種以上のゴム100重量部に対して、平均粒
径が20〜450μｍのゼラチンパウダーを５〜50重量部、
カーボンブラックを30〜100重量部、ナフテンオイルを
配合し、ASTM D2240に従って−15℃で測定した硬度と23
℃で測定した硬度の差が５以下であるタイヤ用ゴム組成
物。1. Gelatin powder having an average particle size of 20 to 450 μm per 100 parts by weight of one or more rubbers selected from natural rubber, butadiene rubber, styrene butadiene rubber, isoprene rubber and butyl rubber. ~ 50 parts by weight,
30 to 100 parts by weight of carbon black and naphthenic oil were mixed, and the hardness and the hardness measured at −15 ° C. according to ASTM D2240 and 23
A rubber composition for a tire, which has a hardness difference of 5 or less measured at ° C.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1049674A JPH072872B2 (en) | 1989-03-01 | 1989-03-01 | Rubber composition for tires |
| DE4005493A DE4005493A1 (en) | 1989-02-21 | 1990-02-21 | Rubber compsns. partic. for running surfaces of tyres - for use on icy or snowy roads contain powdered leather or gelatin |
| US07/940,755 US5302636A (en) | 1989-02-21 | 1992-09-08 | Rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1049674A JPH072872B2 (en) | 1989-03-01 | 1989-03-01 | Rubber composition for tires |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02228342A JPH02228342A (en) | 1990-09-11 |
| JPH072872B2 true JPH072872B2 (en) | 1995-01-18 |
Family
ID=12837724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1049674A Expired - Lifetime JPH072872B2 (en) | 1989-02-21 | 1989-03-01 | Rubber composition for tires |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH072872B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5617281B2 (en) * | 2010-03-05 | 2014-11-05 | 横浜ゴム株式会社 | Rubber composition for tire tread and pneumatic tire using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63154765A (en) * | 1986-12-19 | 1988-06-28 | Ain Eng Kk | Leather-like molding |
-
1989
- 1989-03-01 JP JP1049674A patent/JPH072872B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02228342A (en) | 1990-09-11 |
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