JP3529569B2 - Rubber composition - Google Patents
Rubber compositionInfo
- Publication number
- JP3529569B2 JP3529569B2 JP31480296A JP31480296A JP3529569B2 JP 3529569 B2 JP3529569 B2 JP 3529569B2 JP 31480296 A JP31480296 A JP 31480296A JP 31480296 A JP31480296 A JP 31480296A JP 3529569 B2 JP3529569 B2 JP 3529569B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber
- weight
- parts
- belt
- 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.)
- Expired - Lifetime
Links
- 229920001971 elastomer Polymers 0.000 title claims description 85
- 239000005060 rubber Substances 0.000 title claims description 85
- 239000000203 mixture Substances 0.000 title claims description 34
- 244000043261 Hevea brasiliensis Species 0.000 claims description 14
- 229920003052 natural elastomer Polymers 0.000 claims description 14
- 229920001194 natural rubber Polymers 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000003351 stiffener Substances 0.000 claims description 10
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 10
- 230000009477 glass transition Effects 0.000 claims description 9
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 8
- 230000001012 protector Effects 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 6
- 229920002554 vinyl polymer Polymers 0.000 claims description 6
- 239000006229 carbon black Substances 0.000 claims description 4
- 239000005062 Polybutadiene Substances 0.000 claims description 3
- 238000010528 free radical solution polymerization reaction Methods 0.000 claims description 3
- 229920002857 polybutadiene Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims 2
- 230000000052 comparative effect Effects 0.000 description 11
- 230000020169 heat generation Effects 0.000 description 10
- 238000013329 compounding Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 241000254043 Melolonthinae Species 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000002510 pyrogen Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Tires In General (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ゴム組成物に関
し、詳しくは、航空機、トラック、バス、リニアモータ
ーカー等、高内圧高荷重で使用される車両用タイヤにお
けるカーカスおよびベルトのコーティングゴム、ベルト
エンドゴム、ベルト層の上下に配置されるカットプロテ
クターゴムおよびクッションゴム、並びに第２スティフ
ナーへの使用に適したゴム組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber composition, and more specifically, a coating rubber for a carcass and a belt in a tire for a vehicle such as an aircraft, a truck, a bus, a linear motor car, etc., which is used under a high internal pressure and a high load, and a belt. The present invention relates to an end rubber, a cut protector rubber and a cushion rubber arranged above and below a belt layer, and a rubber composition suitable for use as a second stiffener.
【０００２】[0002]
【従来の技術】従来、航空機、トラック、バス、リニア
モーターカー等、高内圧高荷重で使用される車両用タイ
ヤにおけるカーカスおよびベルトのコーティングゴム、
ベルトエンドゴム、ベルト層の上下に配置されるカット
プロテクターゴムおよびクッションゴム、並びに第２ス
ティフナーの配合ポリマー組成は天然ゴムのみであっ
た。ここで、夫々の適用箇所を具体的に図１に示す。先
ず、ベルトエンドゴムとしては、ベルト３端に配置され
るスペースゴム５を挙げることができる。また、クッシ
ョンゴム２はベルト３上に配設され、更にカットプロテ
クターゴムは該クッションゴム２の上に配設される、例
えばアラミドキャップ１のコーティングゴムと、ベルト
３とカーカスプライ６との間に配設される、例えばベル
トインシュレーションゴム４を挙げることができる。更
にまた、第２スティフナー７は、第１スティフナー８の
外側でカーカスプライ６とゴムチェーファー９との間に
存在するゴムである。2. Description of the Related Art Conventionally, carcass and belt coating rubber for tires for vehicles such as aircraft, trucks, buses, and linear motor cars, which are used under high internal pressure and high load,
The blended polymer composition of the belt end rubber, the cut protector rubber and the cushion rubber arranged above and below the belt layer, and the second stiffener was only natural rubber. Here, each application part is specifically shown in FIG. First, as the belt end rubber, the space rubber 5 arranged at the end of the belt 3 can be mentioned. The cushion rubber 2 is provided on the belt 3, and the cut protector rubber is provided on the cushion rubber 2, for example, between the coating rubber of the aramid cap 1 and the belt 3 and the carcass ply 6. The belt insulation rubber 4 provided, for example, may be used. Furthermore, the second stiffener 7 is rubber existing outside the first stiffener 8 between the carcass ply 6 and the rubber chafer 9.
【０００３】タイヤの耐久性を確保するためには、ゴム
部材として硬さ（弾性率）と発熱性を考慮しなければな
らない。その点で天然ゴムは高弾性率、低発熱であり、
発熱性の面に優れており、また航空機用タイヤとして
は、飛行中上空での気温低下も考慮しなければならない
が、天然ゴムはガラス転移温度が低く、この点でも有利
である。なお、かかる高内圧高荷重で使用されるタイヤ
の発熱を抑えるための技術は種々知られており、例えば
特開昭５４−３８００４号、特開昭５４−１３２９０４
号および特開昭５５−１５２６１２号等が挙げられる
が、いずれもカーカスやベルトのコーティングゴム等の
配合ポリマーを改質することにより、発熱性等を改良す
るものではなかった。In order to ensure the durability of the tire, it is necessary to consider the hardness (elastic modulus) and heat generation of the rubber member. In that respect, natural rubber has a high elastic modulus and low heat generation,
Although it is excellent in heat generation property, and as a tire for aircraft, it is necessary to consider the temperature drop in the sky during flight, but natural rubber has a low glass transition temperature and is also advantageous in this respect. Various techniques for suppressing heat generation of tires used under such a high internal pressure and high load are known, for example, JP-A-54-38004 and JP-A-54-132904.
JP-A-55-152612 and the like, but none of them improve heat generation and the like by modifying a compounding polymer such as a carcass or a coating rubber of a belt.
【０００４】[0004]
【発明が解決しようとする課題】近年、タイヤの軽量化
が進む一方で高耐久化も求められており、例えば、航空
機用として高速耐久性を考えた場合、或いはリニアモー
ターカーとして異常着陸時のブレーキ耐久性を考えた場
合、更なる発熱性、耐熱性の改良が必要である。カーカ
スやベルトのコーティングゴム等に用いられる天然ゴム
は前述の通り発熱性の面で優れているものの、耐熱性の
面ではなお改良の余地を残している。また、天然ゴム
は、加工性（工場作業性）の面でも改善の余地がある。In recent years, as tires have been made lighter in weight, higher durability has also been demanded. Considering the brake durability, it is necessary to further improve heat generation and heat resistance. Natural rubber used as a coating rubber for carcasses and belts is excellent in heat generation as described above, but there is still room for improvement in heat resistance. Natural rubber also has room for improvement in terms of processability (workability in factories).
【０００５】そこで、本発明の目的は、低発熱を維持し
つつ耐熱性および工場作業性を改良したゴム組成物で、
高内圧高荷重で使用される車両用タイヤにおけるカーカ
スおよびベルトのコーティングゴム、ベルトエンドゴ
ム、ベルト層の上下に配置されるカットプロテクターゴ
ムおよびクッションゴム、並びに第２スティフナーへの
使用に適したゴム組成物を提供することにある。Therefore, an object of the present invention is to provide a rubber composition having improved heat resistance and factory workability while maintaining low heat generation.
Coating rubber for carcass and belt in vehicle tires used under high internal pressure and high load, belt end rubber, cut protector rubber and cushion rubber arranged above and below the belt layer, and rubber composition suitable for use as a second stiffener To provide things.
【０００６】[0006]
【課題を解決するための手段】本発明者は、上記課題を
解決すべく鋭意検討した結果、ゴム組成物の原料ゴムを
天然ゴム一種類ではなく、天然ゴムと特定のスチレン−
ブタジエンゴムとのブレンド系とすることにより上記目
的を達成し得ることを見出し、本発明を完成するに至っ
た。Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has found that the raw material rubber for the rubber composition is not one type of natural rubber but natural rubber and a specific styrene-type rubber.
The inventors have found that the above object can be achieved by using a blend system with butadiene rubber, and have completed the present invention.
【０００７】すなわち、本発明のゴム組成物は、原料ゴ
ムが５〜４０重量部のスチレン−ブタジエンゴムと、９
５〜６０重量部の天然ゴムとからなるゴム組成物であっ
て、前記スチレン−ブタジエンゴムが溶液重合による重
合体ゴムであり、該重合体ゴムのビニル構成比が１０〜
５０％であり、かつそのガラス転移温度が−６０℃以下
であることを特徴とするものである。That is, the rubber composition of the present invention comprises 5 to 40 parts by weight of raw material rubber, styrene-butadiene rubber, and 9
A rubber composition comprising 5 to 60 parts by weight of natural rubber, wherein the styrene-butadiene rubber is a polymer rubber obtained by solution polymerization, and the vinyl composition ratio of the polymer rubber is 10 to 10.
The glass transition temperature is 50% and the glass transition temperature thereof is −60 ° C. or lower.
【０００８】前記ゴム組成物には、粒径２０〜４５ｎｍ
および臭化セチルトリメチルアンモニウム（ＣＴＡＢ）
比表面積４０〜１００ｍ２／ｇのカーボンブラックがゴ
ム成分１００重量部に対して、２０〜８０重量部配合さ
れていることが好ましい。The rubber composition has a particle size of 20 to 45 nm.
And cetyltrimethylammonium bromide (CTAB)
It is preferable that 20 to 80 parts by weight of carbon black having a specific surface area of 40 to 100 m 2 / g is mixed with 100 parts by weight of the rubber component.
【０００９】[0009]
【発明の実施の形態】本発明のゴム組成物において、天
然ゴムとブレンド系を構成するスチレン−ブタジエンゴ
ムの重合形態を溶液重合に限定するのは、加工性（工場
作業性）および低温特性が乳化重合に比べ優れているた
めである。BEST MODE FOR CARRYING OUT THE INVENTION In the rubber composition of the present invention, the limitation of the polymerization mode of the styrene-butadiene rubber constituting the blend system with the natural rubber to the solution polymerization is that processability (factory workability) and low-temperature characteristics are limited. This is because it is superior to emulsion polymerization.
【００１０】また、前記スチレン−ブタジエンゴムのビ
ニル構成比を１０〜５０％の範囲内としたのは、１０％
未満であると耐熱性の改良効果が小さく、一方５０％を
超えるとガラス転移点（Ｔｇ）が高くなり過ぎ、好まし
くないためである。好ましくは３０〜４０％の範囲内で
ある。The vinyl composition ratio of the styrene-butadiene rubber is set within the range of 10 to 50% by 10%.
If it is less than 50%, the effect of improving heat resistance is small, while if it exceeds 50%, the glass transition point (Tg) becomes too high, which is not preferable. It is preferably within the range of 30 to 40%.
【００１１】本発明においては、かかるガラス転移点を
−６０℃以下に制限するが、これは−６０℃を超える
と、低温特性について他のスチレン−ブタジエンゴムに
対しての優位性がなくなるためである。すなわち、本発
明に係るスチレン−ブタジエンゴムは天然ゴム並みのガ
ラス転移点を持つことが特徴であり、ガラス転移点は−
６０℃以下で、低ければ低い程よい。In the present invention, the glass transition point is limited to -60 ° C. or lower, because when it exceeds -60 ° C., the low-temperature properties are not superior to other styrene-butadiene rubbers. is there. That is, the styrene-butadiene rubber according to the present invention is characterized by having a glass transition point similar to that of natural rubber, and the glass transition point is −
The lower the temperature is 60 ° C. or lower, the better.
【００１２】上述のスチレン−ブタジエンゴムの原料ゴ
ムに対する割合は、原料ゴム１００重量部に対して５〜
４０重量部、好ましくは２０〜３０重量部であり、残り
は全て天然ゴムである。スチレン−ブタジエンゴムが５
重量部未満では工場作業性（未加硫ゴム粘度）の改善効
果が小さ過ぎ、一方、４０重量部を超えるとゴムの高温
での伸びおよび破壊強力が低下し、好ましくない。The ratio of the above styrene-butadiene rubber to the raw rubber is 5 to 100 parts by weight of the raw rubber.
40 parts by weight, preferably 20 to 30 parts by weight, the rest being all natural rubber. Styrene-butadiene rubber is 5
If it is less than 10 parts by weight, the effect of improving the workability in the factory (viscosity of unvulcanized rubber) is too small, while if it exceeds 40 parts by weight, the elongation and breaking strength of the rubber at high temperature are lowered, which is not preferable.
【００１３】本発明のゴム組成物には、粒径２０〜４５
ｎｍおよび臭化セチルトリメチルアンモニウム（ＣＴＡ
Ｂ）比表面積が４０〜１００ｍ2／ｇ、好ましくは粒径
２５〜３０ｎｍおよびＣＴＡＢ比表面積７０〜１００ｍ
2／ｇのカーボンブラックがゴム成分１００重量部に対
して２０〜８０重量部配合されていることが好ましい。
これは、粒径が２０ｎｍ未満では耐発熱性および工場作
業性が目標に到達せず、一方、４５ｎｍを超えると補強
性が目標に到達しなくなるためである。なお、ＣＴＡＢ
はＡＳＴＭ Ｄ３７６５−８９に準拠して求められる値
である。The rubber composition of the present invention has a particle size of 20-45.
nm and cetyltrimethylammonium bromide (CTA
B) Specific surface area 40-100 m 2 / g, preferably particle size 25-30 nm and CTAB specific surface area 70-100 m
It is preferable that 20 to 80 parts by weight of 2 / g of carbon black is mixed with 100 parts by weight of the rubber component.
This is because if the particle size is less than 20 nm, the heat resistance and factory workability do not reach the target, while if it exceeds 45 nm , the reinforcing property does not reach the target. In addition, CTAB
Is a value determined according to ASTM D3765-89.
【００１４】本発明のゴム組成物には、補強性充填剤、
軟化剤、老化防止剤、加硫剤、加硫促進剤、加硫促進助
剤等、通常ゴム工業で使用される配合剤を適宜配合する
ことができるのは勿論のことである。The rubber composition of the present invention includes a reinforcing filler,
It goes without saying that compounding agents usually used in the rubber industry, such as a softening agent, an anti-aging agent, a vulcanizing agent, a vulcanization accelerator, and a vulcanization accelerating aid, can be appropriately mixed.
【００１５】上述のように、本発明のゴム組成物は、航
空機、トラック、バス、リニアモーターカー等、高内圧
高荷重で使用される車両用タイヤにおけるカーカスおよ
びベルトのコーティングゴム、ベルトエンドゴム、並び
にベルト層の上下に配置されるカットプロテクターゴム
およびクッションゴムへの使用に適している。As described above, the rubber composition of the present invention is applied to the carcass and belt coating rubber, the belt end rubber, and the like of the tires for vehicles such as aircraft, trucks, buses, and linear motor cars, which are used under high internal pressure and high load. It is also suitable for use as cut protector rubber and cushion rubber arranged above and below the belt layer.
【００１６】[0016]
【実施例】次に本発明を実施例および比較例により具体
的に説明する。実施例１〜３，比較例１〜３
下記の表２に示す配合処方（重量部）に従い、高内圧高
荷重用タイヤのカットプロテクターゴムおよびクッショ
ンゴム用ゴム組成物を調製した。なお、表２に示すＳＢ
Ｒ−Ａ，Ｂ，Ｃとは、下記の表１に示す重合法により合
成され、かつ同表に示すビニル構成比（％）およびガラ
ス転移点（Ｔｇ）を有するスチレン−ブタジエンゴムの
ことである。また、同表に示すカーボンブラックは、粒
径が３０ｎｍでかつＣＴＡＢ比表面積７８ｍ2／ｇのも
のである。EXAMPLES Next, the present invention will be specifically described with reference to Examples and Comparative Examples. Examples 1 to 3 and Comparative Examples 1 to 3 According to the formulation (parts by weight) shown in Table 2 below, cut protector rubbers for high internal pressure and high load tires and rubber compositions for cushion rubber were prepared. The SB shown in Table 2
R-A, B and C are styrene-butadiene rubbers synthesized by the polymerization method shown in Table 1 below and having the vinyl constituent ratio (%) and the glass transition point (Tg) shown in the same table. . The carbon black shown in the table has a particle size of 30 nm and a CTAB specific surface area of 78 m 2 / g.
【００１７】[0017]
【表１】 [Table 1]
【００１８】表１中のビニル構成比（％）は、以下のよ
うにして求めたものである。13Ｃ−ＮＭＲ測定装置（Ｇ
Ｘ４００，日本電子社（株）製を使用して、スチレン−
ブタジエンゴム中の結合ビニル含量（％）を測定した。
測定条件は以下の通りである。
溶媒：重クロロホルム
測定温度：室温
パルス繰り返し時間：３秒
パルス幅：４５°[0018] Table vinyl composition ratio of 1 (%) are those obtained Te following by <br/> Unishi. 13 C-NMR measuring device (G
X400, manufactured by JEOL Ltd.
The bound vinyl content (%) in the butadiene rubber was measured.
The measurement conditions are as follows. Solvent: Deuterated chloroform Measurement temperature: Room temperature Pulse repetition time: 3 seconds Pulse width: 45 °
【００１９】得られた各種ゴム組成物について下記の試
験を行った。
（１）発熱性（レジリエンス）
ブリティッシュ・スタンダード９０３：Ｐａｒｔ Ａ
８：１９６３に準じて行った反発弾性試験から、下記式
により算出した。
発熱性指数＝供試試験片の反発弾性率／天然ゴムのみの
比較例１（コントロール）の試験片の反発弾性率
発熱性指数が大きいほど、発熱性の面で優れているこ
と、すなわち発熱量が小さいことを示す。The following tests were carried out on the various rubber compositions obtained. (1) Pyrogenicity (resilience) British Standard 903: Part A
From the impact resilience test conducted according to 8: 1963, it was calculated by the following formula. Exothermic index = Rebound resilience of test specimen / Rebound resilience of test piece of Comparative Example 1 (control) containing only natural rubber The larger the exothermic index, the more excellent the exothermic property is, that is, the calorific value. Indicates that is small.
【００２０】（２）耐熱性
荷重６８ｋｇ（１５０ＬＢ）、回転数３００ｒｐｍ（１
０分毎に１００ｒｐｍづつ増加）、測定開始温度１６０
℃の状況下において、動的剪断試験を実施し、ブローア
ウトするまでの時間を測り、これを耐熱性の指標とし
た。評価は、比較例１を１００として指数にて行った。
指数値が大きいほど耐熱性が良好であることを示す。(2) Heat resistance load 68 kg (150 LB), rotation speed 300 rpm (1
100 rpm increments every 0 minutes), measurement start temperature 160
A dynamic shear test was carried out under the condition of ° C, and the time until blowout was measured, and this was used as an index of heat resistance. The evaluation was carried out using an index with Comparative Example 1 being 100.
The larger the index value, the better the heat resistance.
【００２１】（３）工場作業性
ここでいう工場作業性とは、未加硫ゴムが工場内を流動
するときの粘度に関する事項であり、評価は、比較例１
を１００として指数にて行った。指数値が大きいほど工
場作業性が良好であることを示す。得られた結果を下記
の表２に示す。(3) Factory workability The factory workability here is a matter relating to the viscosity when unvulcanized rubber flows in the factory, and the evaluation is performed in Comparative Example 1
Was set to 100 and index was used. The larger index value indicates the better factory workability. The results obtained are shown in Table 2 below.
【００２２】[0022]
【表２】 [Table 2]
【００２３】実施例４〜６，比較例４〜６
前記表１に示す配合剤と同様のものを用い、下記の表３
に示す配合処方（重量部）に従い、高内圧高荷重用タイ
ヤのベルトコーティングおよびベルトエンド用のゴム組
成物を調製した。得られたゴム組成物について前記と同
様の試験を実施した。なお、かかる試験において、比較
例４をコントロールとした。 Examples 4 to 6 and Comparative Examples 4 to 6 The same compounding agents as shown in Table 1 above were used, and Table 3 below was used.
A rubber composition for a belt coating and a belt end of a tire for high internal pressure and high load was prepared according to the compounding recipe (parts by weight) shown in. The same test as described above was performed on the obtained rubber composition. In this test, Comparative Example 4 was used as a control.
【００２４】[0024]
【表３】 [Table 3]
【００２５】実施例７〜９，比較例７〜９
前記表１に示す配合剤と同様のものを用い、下記の表４
に示す配合処方（重量部）に従い、高内圧高荷重用タイ
ヤのカーカスプライのコーティング用のゴム組成物を調
製した。得られたゴム組成物について前記と同様の試験
を実施した。なお、かかる試験において、比較例７をコ
ントロールとした。 Examples 7 to 9 and Comparative Examples 7 to 9 The same compounds as those shown in Table 1 above were used, and Table 4 below was used.
A rubber composition for coating a carcass ply of a tire for high internal pressure and high load was prepared according to the formulation (parts by weight) shown in. The same test as described above was performed on the obtained rubber composition. In this test, Comparative Example 7 was used as a control.
【００２６】[0026]
【表４】 [Table 4]
【００２７】実施例１０〜１２，比較例１０〜１２
前記表１に示す配合剤と同様のものを用い、下記の表５
に示す配合処方（重量部）に従い、高内圧高荷重用タイ
ヤの第２スティフナー用のゴム組成物を調製した。得ら
れたゴム組成物について前記と同様の試験を実施した。
なお、かかる試験において、比較例１０をコントロール
とした。 Examples 10-12, Comparative Examples 10-12 The same compounding agents as shown in Table 1 above were used, and Table 5 below was used.
A rubber composition for the second stiffener of a tire for high internal pressure and high load was prepared according to the compounding recipe (parts by weight) shown in (1). The same test as described above was performed on the obtained rubber composition.
In this test, Comparative Example 10 was used as a control.
【００２８】[0028]
【表５】 [Table 5]
【００２９】[0029]
【発明の効果】以上説明してきたように、本発明のゴム
組成物においては、発熱が天然ゴム並みに低く維持され
つつ、耐熱性および工場作業性が大幅に向上する。よっ
て、本発明のゴム組成物は、航空機、トラック、バス、
リニアモーターカー等、高内圧高荷重で使用される車両
用タイヤにおけるカーカスおよびベルトのコーティング
ゴム、ベルトエンドゴム、ベルト層の上下に配置される
カットプロテクターゴムおよびクッションゴム、並びに
第２スティフナーに使用した場合に優れた効果を奏す
る。As described above, in the rubber composition of the present invention, heat generation and factory workability are greatly improved while heat generation is kept as low as natural rubber. Therefore, the rubber composition of the present invention, aircraft, trucks, buses,
Used for carcass and belt coating rubber, belt end rubber, cut protector rubber and cushion rubber arranged above and below the belt layer, and second stiffener for tires for vehicles such as linear motor cars used under high internal pressure and high load. In some cases, it has an excellent effect.
【図面の簡単な説明】[Brief description of drawings]
【図１】空気入りタイヤの部分断面図である。FIG. 1 is a partial cross-sectional view of a pneumatic tire.
１ アラミドキャップ ２ クッションゴム ３ ベルト ４ ベルトインシュレーションゴム ５ スペースゴム ６ カーカスプライ ７ 第２スティフナー ８ 第１スティフナー ９ ゴムチェーファー 1 aramid cap 2 cushion rubber 3 belts 4 Belt insulation rubber 5 space rubber 6 carcass ply 7 Second Stiffener 8 First Stiffener 9 rubber chafer
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B60C 1/00 C08L 7/00 - 21/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) B60C 1/00 C08L 7 /00-21/00
Claims (2)
ブタジエンゴムと、９５〜６０重量部の天然ゴムとから
なるゴム組成物であって、前記スチレン−ブタジエンゴ
ムが溶液重合による重合体ゴムであり、該重合体ゴムの
ビニル構成比が１０〜５０％であり、かつそのガラス転
移温度が−６０℃以下であることを特徴とする、高内圧
高荷重で使用される車両用タイヤにおけるカーカスおよ
びベルトのコーティングゴム、ベルトエンドゴム、ベル
ト層の上下に配置されるカットプロテクターゴムおよび
クッションゴム、並びに第２スティフナーのいずれかに
使用されるゴム組成物。1. A raw material rubber comprising 5 to 40 parts by weight of styrene.
A rubber composition comprising butadiene rubber and 95-60 parts by weight of natural rubber, wherein the styrene-butadiene rubber is a polymer rubber obtained by solution polymerization, and the vinyl constituent ratio of the polymer rubber is 10-50%. And a glass transition temperature of -60 ° C or lower , high internal pressure
Carcasses and tires for vehicles used under heavy loads
And belt coating rubber, belt end rubber, bell
Cut protector rubber placed above and below the
One of the cushion rubber and the second stiffener
The rubber composition used.
リメチルアンモニウム（ＣＴＡＢ）比表面積４０〜１０
０ｍ2／ｇのカーボンブラックがゴム成分１００重量部
に対して、２０〜４５重量部配合されてなる請求項１記
載のゴム組成物。2. A particle size of 20 to 45 nm and a specific surface area of cetyltrimethylammonium bromide (CTAB) 40 to 10
0 m 2 / g of carbon black on 100 parts by weight of the rubber component, formed by 20 to 45 parts by weight blended claim 1 rubber composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31480296A JP3529569B2 (en) | 1996-11-26 | 1996-11-26 | Rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31480296A JP3529569B2 (en) | 1996-11-26 | 1996-11-26 | Rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10152580A JPH10152580A (en) | 1998-06-09 |
| JP3529569B2 true JP3529569B2 (en) | 2004-05-24 |
Family
ID=18057783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31480296A Expired - Lifetime JP3529569B2 (en) | 1996-11-26 | 1996-11-26 | Rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3529569B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001261887A (en) * | 2000-03-23 | 2001-09-26 | Bridgestone Corp | Rubber composition and pneumatic tire |
| JP2004284375A (en) * | 2003-03-19 | 2004-10-14 | Bridgestone Corp | Pneumatic radial tire for high speed heavy load |
| JP4810145B2 (en) * | 2005-07-12 | 2011-11-09 | 株式会社ブリヂストン | Pneumatic radial tire for high speed and high load |
-
1996
- 1996-11-26 JP JP31480296A patent/JP3529569B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10152580A (en) | 1998-06-09 |
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