JPS62290738A - Improved rubber composition - Google Patents
Improved rubber compositionInfo
- Publication number
- JPS62290738A JPS62290738A JP13392586A JP13392586A JPS62290738A JP S62290738 A JPS62290738 A JP S62290738A JP 13392586 A JP13392586 A JP 13392586A JP 13392586 A JP13392586 A JP 13392586A JP S62290738 A JPS62290738 A JP S62290738A
- Authority
- JP
- Japan
- Prior art keywords
- carbon black
- rubber
- specific surface
- surface area
- ratio
- 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.)
- Granted
Links
- 229920001971 elastomer Polymers 0.000 title claims description 26
- 239000005060 rubber Substances 0.000 title claims description 26
- 239000000203 mixture Substances 0.000 title claims description 13
- 239000006229 carbon black Substances 0.000 claims abstract description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001179 sorption measurement Methods 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims abstract description 6
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 6
- 229910052740 iodine Inorganic materials 0.000 claims abstract description 6
- 239000011630 iodine Substances 0.000 claims abstract description 6
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 6
- 229920001194 natural rubber Polymers 0.000 claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 150000001993 dienes Chemical class 0.000 claims description 3
- 229920003051 synthetic elastomer Polymers 0.000 claims description 3
- 239000005061 synthetic rubber Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 16
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 229920003244 diene elastomer Polymers 0.000 abstract 2
- 235000019241 carbon black Nutrition 0.000 description 35
- 238000005299 abrasion Methods 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 230000020169 heat generation Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000010734 process oil Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- OUBMGJOQLXMSNT-UHFFFAOYSA-N N-isopropyl-N'-phenyl-p-phenylenediamine Chemical compound C1=CC(NC(C)C)=CC=C1NC1=CC=CC=C1 OUBMGJOQLXMSNT-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- WMFYOYKPJLRMJI-UHFFFAOYSA-N Lercanidipine hydrochloride Chemical compound Cl.COC(=O)C1=C(C)NC(C)=C(C(=O)OC(C)(C)CN(C)CCC(C=2C=CC=CC=2)C=2C=CC=CC=2)C1C1=CC=CC([N+]([O-])=O)=C1 WMFYOYKPJLRMJI-UHFFFAOYSA-N 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000012488 sample solution Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- MHKLKWCYGIBEQF-UHFFFAOYSA-N 4-(1,3-benzothiazol-2-ylsulfanyl)morpholine Chemical compound C1COCCN1SC1=NC2=CC=CC=C2S1 MHKLKWCYGIBEQF-UHFFFAOYSA-N 0.000 description 1
- 239000004902 Softening Agent Substances 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
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000005259 measurement Methods 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
- 239000002510 pyrogen Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
λ発明の詳細な説明
（産業上の利用分野）
本発明は、改良され之ゴム組底物、特にタイヤ、ホース
、コンベアベルト等に使用される高補強性及び高耐摩耗
性を要求されるゴム組成物に関する。Detailed Description of the Invention Detailed Description of the λ Invention (Field of Industrial Application) The present invention provides improved rubber composites, particularly highly reinforcing and highly durable materials used in tires, hoses, conveyor belts, etc. The present invention relates to a rubber composition that requires abrasion resistance.
（従来の技術）
従来、補強性ゴム充填剤として知られているｌ５ＡＦ級
のカーボンブランクは比表面積が大きく、補強性が高く
、また耐摩耗性が優れているため、例えばタイヤでは道
路と接触するため高い耐摩耗性能が要求されるトレッド
部分の配合等に通常使用されており、高補強性及び高ｉ
１’Ｊ耗性の良いゴム組成物を得るため；′こ、カー
ボンブラック配合量の増加、ｆロセスオイル等の軟化剤
の址の減少等のような配合量の変更、又は更に高い比表
面積？有するカーボンブラックの使用等が行われている
。(Prior art) 15AF class carbon blanks, conventionally known as reinforcing rubber fillers, have a large specific surface area, high reinforcing properties, and excellent wear resistance. Therefore, it is usually used in the formulation of tread parts that require high wear resistance, and has high reinforcing properties and high i.
1'J In order to obtain a rubber composition with good abrasion resistance; 'Is it possible to change the blending amount such as increasing the blending amount of carbon black, reducing the amount of softening agent such as f process oil, or even higher specific surface area? The use of carbon black, which has
（発明が解決しようとする問題点）
しかしながら、ｌ５ＡＦ級のカーボンブランク配合量の
増力０による補強性及び耐′≠耗性向上効果は。(Problems to be Solved by the Invention) However, the reinforcing property and wear resistance are improved by adding 15AF class carbon blank to zero force increase.
よく知らすしているように、−万ではゴム配合物の発熱
性が顕著に悪くなυ（発熱量が大きくなる）、ま九、配
合ゴム粘度の上昇も大きくなって加工性が困翔になると
いう欠点があった。また、軟化剤を減少・除去すると弾
性率や伸び等のゴム物性が大巾に変化する丈でなく、配
合ゴム粘度の上昇によりゴム加工性の低下を生じた。更
に、カーボンブラックを変更することについては、その
重要な特性値の一つである比表面積を大きくすることは
補強性・耐摩耗性の向上にはなるが発熱性能も低下し同
時にコスト高になるという不利がちりた。As is well known, in the case of -1000, the heat generation property of the rubber compound becomes noticeably worse (the calorific value increases), and in the case of -1000, the viscosity of the compounded rubber also increases, making processability difficult. There was a drawback. Furthermore, reducing or removing the softener did not cause a drastic change in rubber physical properties such as elastic modulus and elongation, but also caused a decrease in rubber processability due to an increase in the viscosity of the compounded rubber. Furthermore, when changing carbon black, increasing the specific surface area, which is one of its important characteristic values, improves reinforcement and wear resistance, but it also reduces heat generation performance and increases costs. There was a disadvantage.
また、他の重要な特性値であるストラフチャーを増大さ
せると、補強性・耐摩耗性は向上するが弾性率の大幅な
変化や疲労性の低下などを生じる問題があった。In addition, increasing the struture, which is another important characteristic value, improves reinforcing properties and wear resistance, but causes problems such as a significant change in the modulus of elasticity and a decrease in fatigue properties.
本発明は、前記発熱性の悪化、加工性の低下、ゴム物性
の大巾な変化及び経済的不利などの問題点を解決したう
えで、高補強性と高耐摩耗性の双方を満足させたゴムｌ
＆ｌｌ載物を得ることを目的とじ九ものである。The present invention solves the above-mentioned problems such as deterioration of heat generation, deterioration of workability, drastic changes in rubber physical properties, and economic disadvantage, and also satisfies both high reinforcing properties and high abrasion resistance. rubber l
The aim is to obtain the following information.
（問題点を解決するための手段）
本発明者らは、前述カーボンブラックの増量や軟化剤の
減量等による従来の考え方とは別の観点から、更にカー
ボンブラックの特性について種々検討を行なりた結果、
特定カーボンブラックを配合することにより前記問題点
を解決しうろことを確かめ、この発明を達成するに至っ
た。即ち、従来の代表的特性である比表面積、ストラフ
チャーの他にカーメンブラックのミクロ構造因子である
カーボンブラックの平均凝集体径の大きさとその径の分
布に着目して検討を行なった。(Means for Solving the Problems) The present inventors further conducted various studies on the characteristics of carbon black from a different perspective from the conventional thinking such as increasing the amount of carbon black and reducing the amount of softener. result,
It was confirmed that the above-mentioned problems could be solved by blending a specific carbon black, and the present invention was achieved. That is, in addition to the conventional typical characteristics such as specific surface area and stracture, the study focused on the size of the average aggregate diameter of carbon black and the distribution of the diameter, which are microstructural factors of carmen black.
ここに、カーボンブラックの凝集体とは、カーボンブラ
ックの基本構造のうち、粒状−炭粒子が多数個溶融連結
した最小分散単位を言い、その径の大きさと分布は、主
として遠心沈降法によって測定される。Here, the carbon black aggregate refers to the smallest dispersion unit in the basic structure of carbon black, in which a large number of granular-charcoal particles are fused and connected, and the diameter and distribution of the aggregate are mainly measured by centrifugal sedimentation. Ru.
従来カーボンブラックの平均凝集体径が大きければ、ゴ
ム組成物の物性として発熱性が改良される事は判りてい
たが、比表面積の低下を伴なう事から、補強性・耐摩耗
性の低下を生じるものでありた。即ち、平均凝集体径の
コントロールだけでは配合ゴムの緒特性を維持して補強
性・耐摩耗性を向上することは出来ていなかった。Conventionally, it has been known that if the average aggregate diameter of carbon black is large, the heat generation properties of the rubber composition will be improved, but this is accompanied by a decrease in the specific surface area, resulting in a decrease in reinforcement properties and wear resistance. It was something that caused. That is, it has not been possible to maintain the strength properties of compounded rubber and improve the reinforcing properties and abrasion resistance by controlling the average aggregate diameter alone.
本発明では更に凝集体分布について糧々の検討評価を進
めた所、凝集体分布を特定のシャープな型にする事によ
り、発熱性・加工性・コストを大きく損なう事無く、補
強性・耐摩耗性の向上効果を得ることが出来た。In the present invention, we further investigated and evaluated the aggregate distribution, and found that by making the aggregate distribution into a specific sharp shape, we could improve reinforcement and wear resistance without significantly impairing heat generation properties, workability, and cost. I was able to get a sexual improvement effect.
本発明は天然ゴム及びジエン系合成ゴムより成る群の中
から選ばれた少なくとも１種のゴム１００重量部に、カ
ーボンブラックとして
（イ）窒素吸着比表面積（Ｎ２ＳＡ）が１００〜１２５
ｍ２／ｌの範囲内であり、
（ロ） ジブチルフタレート吸油量（ＤＢＰ）が１０５
〜１３０ｍｌ／１００ｇノ範囲内であシ、（ハ）Ｒ集体
径分布の半価幅（ΔＤ５０）と凝集体径分布の最頻値（
Ｄｓｔ）との比ΔＤ５０／Ｄｓｔが０．７〜１．０の範
囲であり、かつ
（ロ）） 窒素吸着比表面積（Ｎ２ＳＡ）と沃素吸着比
表面積（ＩＡ）との比（Ｎ２ＳＡ／ ＩＡ ’）は０．
９０〜１，０５の範囲であるカーボンブラック４０〜１
２０重量部を配合して成る改良されたゴム組成物である
。In the present invention, carbon black is added to 100 parts by weight of at least one rubber selected from the group consisting of natural rubber and diene-based synthetic rubber.
m2/l, and (b) dibutyl phthalate oil absorption (DBP) is 105
〜130ml/100g, (c) The half width (ΔD50) of the R aggregate diameter distribution and the mode of the aggregate diameter distribution (
Dst), the ratio ΔD50/Dst is in the range of 0.7 to 1.0, and (b)) the ratio of nitrogen adsorption specific surface area (N2SA) to iodine adsorption specific surface area (IA) (N2SA/IA') is 0.
Carbon black ranging from 90 to 1,05 40 to 1
This is an improved rubber composition comprising 20 parts by weight.
本発明において各カーボンブラックの特性値は、以下の
方法によシ測定される。In the present invention, the characteristic values of each carbon black are measured by the following method.
窒素吸着比表面積（Ｎ２ＳＡ ） ： ＡＳＴＭ Ｄ３
０３７−８４ Ｂ法沃素吸着比表面積（ＩＡ） ： Ａ
ＳＴＭ Ｄ１５１０−８１ジブチルフタレート吸油量（
ＤＢＰ）： ＪＩＳＫ６２２１−１９８２ Ａ法また凝
集体の測定は、遠心沈降法によるものであり英国ジョイ
ス・レーベル（Ｊｏｙｃｅ−Ｌｏｅｂｌ）社製ディスク
・セントリフエージ（ＤＩＳＣＣＥＮＴＲＩＦＵＧＥ）
を使用し、以下の方法で行なった。Nitrogen adsorption specific surface area (N2SA): ASTM D3
037-84 B method iodine adsorption specific surface area (IA): A
STM D1510-81 Dibutyl phthalate oil absorption (
DBP): JISK6221-1982 A method and measurement of aggregates is by centrifugal sedimentation method using DISC CENTRIFUGE manufactured by Joyce-Loebl, UK.
This was done using the following method.
先ず、試料カーボンブラックを精秤し、エタノール２０
チ水溶液に加え、カーボンブラック濃度を０．０１重−
Ｍチにした後、超音波で１０分間程度分散させ、これを
試料溶液とした。ディスク・セントリフエージの回転数
を６．ＯＯＯｒｐｍに設定し、試料溶液（０，２５ｍＪ
〜１．０Ｏｄ）全注射器でスピンｉ（２％グリセリン水
溶Ｑ ） ３０ ｖ、ｔに注入し、−斉に遠心沈降させ
、光電沈降法により凝集体径分布曲線を作成した。First, the sample carbon black was accurately weighed, and 20% of ethanol was added.
In addition to the aqueous solution, the carbon black concentration was adjusted to 0.01 weight.
After the mixture was made into M-chie, it was dispersed using ultrasonic waves for about 10 minutes, and this was used as a sample solution. Set the rotation speed of the disk centrifage to 6. Set the sample solution (0.25 mJ
~1.0 Od) All the samples were injected into Spin i (2% glycerin aqueous solution Q) 30 v, t using a syringe, centrifuged at the same time, and an aggregate size distribution curve was created by photoelectroprecipitation.
半価幅（ΔＤ５０）と最頻値（Ｄｓｔ）は、第一図に示
すような凝集体径分布曲線から求めた。尚、図中ｆ、と
ｆ２は同じ長さである。The half width (ΔD50) and the mode (Dst) were determined from the aggregate diameter distribution curve as shown in FIG. Note that f and f2 in the figure have the same length.
（作用）
窒素吸着比表面積（Ｎ２ＳＡ）が１００ｍ！＃未満の場
合は、通常のｌ５ＡＦ級のカーボンブラックとしての補
強性、耐摩耗性能のレベルが維持できなくな９．１２５
ｍ”／、ｌｉ’より大きい場合は、発熱性能の低下が余
りに大きくなるため、Ｎ２ＳＡは１００〜１２５ｍ２／
Ｉの範囲に限定される。(Function) Nitrogen adsorption specific surface area (N2SA) is 100m! If it is less than #, it will not be possible to maintain the reinforcing properties and abrasion resistance performance level of normal l5AF class carbon black.9.125
m"/, li', the reduction in heat generation performance will be too large, so N2SA should be 100 to 125 m2/
limited to the range of I.
ジブチルフタレート吸油量（ＤＢＰ ）が１０５１ｆｆ
ｊ／１００ｇ未満の場合は、充分な耐摩耗性能や、カー
メンブラックの分散性が得られず、ま九逆に、１３０ｉ
／ｌｏｏｇ より大きい場合には作業性が低下するので
、ＤＢＰは１０５〜１３０ｍ１ｌｉの範囲に限定される
。更に好ましくは１１０〜１３０ｒｌｌｌ／１１の範囲
に限定される。Dibutyl phthalate oil absorption (DBP) is 1051ff
j/100g, sufficient abrasion resistance and carmen black dispersibility cannot be obtained, and conversely, 130i
If it is larger than /loog, workability decreases, so DBP is limited to a range of 105 to 130 m1li. More preferably, it is limited to a range of 110 to 130 rlll/11.
凝集体径分布の半価幅ΔＤ５０が小さいと、即ち凝集体
径の分布がシャープであると、カーボンブラックの均質
性が高マシ、補強効果が増大する。When the half width ΔD50 of the aggregate diameter distribution is small, that is, when the aggregate diameter distribution is sharp, the homogeneity of carbon black is improved and the reinforcing effect is increased.
本発明者らは、ｌ５ＡＦ級のカーボンブラックに付いて
この腹黒から、評価検討を進めた結果、凝集体分布の半
価幅（ΔＤ５０）と凝集体径の最頻値（Ｄ＋＋ｔ）との
比（ΔＤ５０／Ｄｓｔ）が１．０以下という狭い凝集体
径分布を持つ範囲にあると、従来の広い凝集体径分布を
持つカーボンブラックに較べて、優れた耐摩耗性・補強
性が得られることを見出だした。The present inventors conducted an evaluation study on l5AF class carbon black based on this dark point, and found that the ratio of the half-width of the aggregate distribution (ΔD50) to the mode of the aggregate diameter (D++t) ( It has been shown that when ΔD50/Dst) is in a range with a narrow aggregate size distribution of 1.0 or less, superior wear resistance and reinforcing properties can be obtained compared to conventional carbon blacks that have a wide aggregate size distribution. I found a headline.
但し、このΔＤ５０／Ｄｓｔの値が０．７より小さくな
ると、耐発熱性の低下が大きくなるため、望ましい範囲
は０．７〜１．０になる。However, if the value of ΔD50/Dst becomes smaller than 0.7, the heat resistance deteriorates significantly, so the desirable range is 0.7 to 1.0.
さらに、窒素吸着比表面積（Ｎ２ＳＡ）と沃素吸着比表
面ｙｔ（ＩＡ）との比（Ｎ２ＳＡ／ＩＡ）が０．９０よ
り小さいと従来のカーボンブラックに対する耐摩耗性能
・補強性の向上効果が失われてしまう。又、１．０５よ
り大きいと配合ゴムの粘度が大巾に上がり、加工性が低
下してしまう。このため望ましい範囲は０．９０〜１．
０５となる。Furthermore, if the ratio of nitrogen adsorption specific surface area (N2SA) to iodine adsorption specific surface area yt (IA) (N2SA/IA) is smaller than 0.90, the effect of improving wear resistance and reinforcing properties over conventional carbon black will be lost. It ends up. On the other hand, if it is larger than 1.05, the viscosity of the compounded rubber will increase significantly and the processability will decrease. Therefore, the desirable range is 0.90 to 1.
It becomes 05.
使用するゴム成分としては、天然ゴム、ジエン系合成ゴ
ムの単独、或いは併用系のいずれでも良い。The rubber component used may be natural rubber or diene-based synthetic rubber alone or in combination.
カーボンブラックの配合量が４０重量部未満では、上記
本発明のカーボンブラックであっても、十分な補強効果
・耐摩耗性向上効果を示す事は出来ない。又、１２０重
量部より多い場合は、耐発熱性の低下が大きすぎるため
、カーボンブラックの配合蓋としてはゴム成分１００電
蓄部に対して、４０〜１２０重量部の範囲に限定される
。If the blending amount of carbon black is less than 40 parts by weight, even the carbon black of the present invention cannot exhibit sufficient reinforcing effects and abrasion resistance improving effects. If the amount is more than 120 parts by weight, the heat resistance deteriorates too much, so the amount of carbon black compounded is limited to 40 to 120 parts by weight per 100 parts of the rubber component.
（実施例）
実施例１〜４、比較例１〜７
表１に比較検討に用いたカーボンブラックの特性値を示
す。カーピンブラック番号Ａ−Ｄの４種類が本発明に該
当するカーボンブラックであり。(Example) Examples 1 to 4, Comparative Examples 1 to 7 Table 1 shows the characteristic values of carbon black used for comparative study. The four types of carpin black numbers A to D are carbon blacks that fall under the present invention.
カーボンブランク番号Ｅ〜工の５種類が比較例に用いた
カーフ２ンブラツクである。Five types of carbon blanks, numbered E to B, were used in comparative examples.
比較例のカーボンブラックはそれぞれ次の特性を持って
いる。カーボンブラックＥ、Ｆは凝集体分布の半価幅（
ΔＤ５０）と凝集体径の最頻値（Ｄｓｔ）との比（ΔＤ
５０／Ｄｓｔ）が０．７より小及び１．０より大である
。カーボンブラックＧ、Ｈは窒素吸着比表面積（Ｎ、Ｓ
Ａ ）と沃素吸着比表面積（ＩＡ）との比（Ｎ２ＳＡ／
ＩＡ） カ０．９０ ！り小及び、１．０５より大で
ある。又、カーボンブラックエは一般市販のｌ５ＡＦカ
ーデンブラツクであり、本発明に使用するカーボンブラ
ックとは（ΔＤ５０／Ｄｇｔ ）が大巾て異なることが
判る。The carbon blacks of comparative examples each have the following characteristics. Carbon black E and F have the half width of aggregate distribution (
The ratio (ΔD50) to the mode of the aggregate diameter (Dst)
50/Dst) is smaller than 0.7 and larger than 1.0. Carbon blacks G and H have nitrogen adsorption specific surface areas (N, S
A) and the iodine adsorption specific surface area (IA) (N2SA/
IA) Ka 0.90! is small and larger than 1.05. Furthermore, it can be seen that the carbon black is a commercially available 15AF carden black, which is significantly different in (ΔD50/Dgt) from the carbon black used in the present invention.
表２にゴム組成物の実施例及び比較例を示す。Table 2 shows examples and comparative examples of rubber compositions.
実施例及び比較例の基本的な配合内容は以下の通シであ
るが、表２に示す通シ、比較検討に応じて、カーボンブ
ラック、プロセス・オイルの配合量は変更した。The basic formulations of Examples and Comparative Examples are as follows; however, the amounts of carbon black and process oil were changed according to the formulation and comparative study shown in Table 2.
天然ゴム（Ｒ８Ｓす１） １００．０重量部カーボ
ンブラック ５０．０ ’
プロセス・オイル １０．０ １
ステアリン酸 ａ、ｏ ’
亜鉛華 ４．０１
老化防止剤（ＩＰＰＤ） １．０ ’加硫促進剤
（ｏＢｓ） ０．５ ｌ硫 黄
２．５１老化防止剤（ＩＰＰＤ）は、Ｎ−
フェニル−Ｎ′−イソプロビル−ｐ−フェニレンジアミ
ンである。加硫促進剤（ＯＢＳ）ハ、Ｎ−オキシジエチ
レ°ンー２−ベンゾチアジル−スルフェンアミドである
。Natural rubber (R8S 1) 100.0 parts by weight Carbon black 50.0' Process oil 10.0 1 Stearic acid a, o' Zinc white 4.01 Anti-aging agent (IPPD) 1.0' Vulcanization accelerator (oBs) 0.5 l sulfur
2.51 Anti-aging agents (IPPD) are N-
Phenyl-N'-isopropyl-p-phenylenediamine. The vulcanization accelerator (OBS) is N-oxydiethylene-2-benzothiazyl-sulfenamide.
ムーニー粘度試験はＪＩＳ Ｋ ６３００−１９７４に
単じて行った。この値が小さい方が作業性が良好である
。The Mooney viscosity test was performed solely in accordance with JIS K 6300-1974. The smaller this value is, the better the workability is.
摩耗性試験は、ランゴーノ式摩耗試験機を用い。A Langono abrasion tester was used for the abrasion test.
摩耗損失量を測定し、下式によって算出した。The amount of wear loss was measured and calculated using the following formula.
耐摩耗指数、、＝ＩＲＢす５試験片の容積損失量／供試
試験片の容積損失蓋
この値が大きい程耐摩耗性が大きい。Abrasion resistance index, = volume loss of IRBsu5 test piece/volume loss of test piece lid The larger this value is, the greater the abrasion resistance is.
発熱性試験は、ブリティッシュ・スタンダード９０３
： Ｐａｒｔ Ａ８ ： １９６３に準じて行った反発
弾性試験の結果から、下式によって算出した。Pyrogenicity test is British Standard 903
: Part A8: Calculated using the following formula from the results of the impact resilience test conducted in accordance with 1963.
発熱性指数＝供試試験片の反発弾性率
／ＩＲＢ÷５試験片の反発弾性率
発熱性指数が大きい程、発熱性が良いこと、すなわち発
熱奮が小さいことを示す。ゴム引張強さ試験は、ＪＩＳ
Ｋ ６３０１−１９７５に単じて行った。Exothermic index = rebound modulus of test piece / IRB / 5 rebound modulus of test piece The larger the exothermic index is, the better the exothermic property is, that is, the smaller the exothermic excitation. Rubber tensile strength test is JIS
K 6301-1975.
ゴム物理性試験用の各サンプル加硫条件は１４５℃、３
０分である。The vulcanization conditions for each sample for the rubber physical property test were 145℃, 3
It is 0 minutes.
（発明の効果）
実施例１〜４に示したように、本発明に該当するカーボ
ンブラックＡ−Ｄを使用したゴム組成物は、比較例１〜
５に示す従来のカーボンブラックＥ〜工を使用したゴム
組成物と比べ、発熱性及び加工性を損なうここなく、補
強性及び耐摩耗性に優れたものとなっている。(Effect of the invention) As shown in Examples 1 to 4, rubber compositions using carbon black A-D that correspond to the present invention were obtained in Comparative Examples 1 to 4.
Compared to the rubber composition using the conventional carbon black E shown in No. 5, it has excellent reinforcing properties and abrasion resistance without impairing heat generation properties and processability.
また、実施例６，７に示したように、本発明の効果は、
従来の配合手法である、カーボンブラックの増量、又は
プロセス・オイルの減量と比較しても、発熱性及び加工
性を損なうことなく、良好な補強性及び耐摩耗性を得て
いる。Furthermore, as shown in Examples 6 and 7, the effects of the present invention are as follows:
Even when compared with conventional blending methods of increasing the amount of carbon black or decreasing the amount of process oil, good reinforcing properties and wear resistance are obtained without impairing heat generation and processability.
第１図は、凝集体分布曲線より凝集体系分布の半価幅及
び最頻値を求める方法を示すグラフである。
ΔＤ５０・・・凝集体系分布の半価幅
Ｄｓｔ・・・・・・凝集体系分布の最頻値特詐出願人
株式会社プリデストン
代理人弁理士 久 米 英 −
同 弁理士 鈴 木 悦 部
第１図
凝集体径FIG. 1 is a graph showing a method for determining the half-width and mode of an aggregate system distribution from an aggregate distribution curve. ΔD50...Half width Dst of aggregate system distribution...Mode of aggregate system distributionSpecial fraud applicant
Pridestone Co., Ltd. Patent Attorney Hide Kume − Patent Attorney Etsu Suzuki Department Figure 1 Aggregate Diameter
Claims (1)
選ばれた少なくとも１種のゴム１００重量部に、カーボ
ンブラックとして （イ）窒素吸着比表面積（Ｎ＿２ＳＡ）が１００〜１２
５ｍ＾２／ｇの範囲内であり、 （ロ）ジブチルフタレート吸油量（ＤＢＰ）が１０５〜
１３０ｍｌ／１００ｇの範囲内であり、 （ハ）凝集体径分布の半価幅（ΔＤ５０）と凝集体径分
布の最頻値（Ｄｓｔ）との比ΔＤ５０／Ｄｓｔが０．７
〜１．０の範囲であり、かつ （ニ）窒素吸着比表面積（Ｎ＿２ＳＡ）と沃素吸着比表
面積（ＩＡ）との比（Ｎ＿２ＳＡ／ＩＡ）は０．９０〜
１．０５の範囲であるカーボンブラック４０〜１２０重
量部を配合して成る改良されたゴム組成 物。[Scope of Claims] 1. 100 parts by weight of at least one rubber selected from the group consisting of natural rubber and diene-based synthetic rubber, as carbon black (a) having a nitrogen adsorption specific surface area (N_2SA) of 100 to 100 parts by weight; 12
5m^2/g, and (b) dibutyl phthalate oil absorption (DBP) is 105~
within the range of 130 ml/100 g, and (c) the ratio ΔD50/Dst of the half width of the aggregate diameter distribution (ΔD50) to the mode (Dst) of the aggregate diameter distribution is 0.7.
~1.0, and (d) the ratio of nitrogen adsorption specific surface area (N_2SA) to iodine adsorption specific surface area (IA) (N_2SA/IA) is 0.90 to
An improved rubber composition comprising 40 to 120 parts by weight of carbon black in the range of 1.05.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133925A JPH0723434B2 (en) | 1986-06-11 | 1986-06-11 | Improved rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133925A JPH0723434B2 (en) | 1986-06-11 | 1986-06-11 | Improved rubber composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62290738A true JPS62290738A (en) | 1987-12-17 |
| JPH0723434B2 JPH0723434B2 (en) | 1995-03-15 |
Family
ID=15116291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61133925A Expired - Lifetime JPH0723434B2 (en) | 1986-06-11 | 1986-06-11 | Improved rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723434B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991013944A1 (en) * | 1990-03-13 | 1991-09-19 | Cabot Corporation | Improved treadwear/hysteresis carbon blacks |
| US5124396A (en) * | 1990-03-13 | 1992-06-23 | Cabot Corporation | Treadwear/hysteresis carbon blacks |
| JPH11209515A (en) * | 1998-01-30 | 1999-08-03 | Bridgestone Corp | Pneumatic tire for heavy load |
| KR20030042891A (en) * | 2001-11-26 | 2003-06-02 | 한국타이어 주식회사 | Rubber composition for tire tread |
| US7238741B2 (en) * | 2004-05-13 | 2007-07-03 | Columbian Chemicals Company | Carbonaceous material with broad aggregate size distribution and improved dispersibility |
| US7847009B2 (en) | 2004-05-13 | 2010-12-07 | Columbian Chemicals Company | Carbonaceous material with dissociated aggregate size and particle size distribution and improved dispersibility |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140241A (en) * | 1983-01-31 | 1984-08-11 | Tokai Carbon Co Ltd | Rubber composition |
| JPS59184231A (en) * | 1983-04-04 | 1984-10-19 | Tokai Carbon Co Ltd | Carbon black for use in high-elasticity rubber |
| JPS60208369A (en) * | 1984-04-03 | 1985-10-19 | Asahi Carbon Kk | Carbon black |
| JPS6134072A (en) * | 1984-07-25 | 1986-02-18 | Asahi Carbon Kk | Reinforcing furnace carbon black |
-
1986
- 1986-06-11 JP JP61133925A patent/JPH0723434B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140241A (en) * | 1983-01-31 | 1984-08-11 | Tokai Carbon Co Ltd | Rubber composition |
| JPS59184231A (en) * | 1983-04-04 | 1984-10-19 | Tokai Carbon Co Ltd | Carbon black for use in high-elasticity rubber |
| JPS60208369A (en) * | 1984-04-03 | 1985-10-19 | Asahi Carbon Kk | Carbon black |
| JPS6134072A (en) * | 1984-07-25 | 1986-02-18 | Asahi Carbon Kk | Reinforcing furnace carbon black |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991013944A1 (en) * | 1990-03-13 | 1991-09-19 | Cabot Corporation | Improved treadwear/hysteresis carbon blacks |
| US5124396A (en) * | 1990-03-13 | 1992-06-23 | Cabot Corporation | Treadwear/hysteresis carbon blacks |
| JPH05506870A (en) * | 1990-03-13 | 1993-10-07 | キャボット コーポレイション | Improved treadwear/hysteresis carbon black |
| JPH11209515A (en) * | 1998-01-30 | 1999-08-03 | Bridgestone Corp | Pneumatic tire for heavy load |
| KR20030042891A (en) * | 2001-11-26 | 2003-06-02 | 한국타이어 주식회사 | Rubber composition for tire tread |
| US7238741B2 (en) * | 2004-05-13 | 2007-07-03 | Columbian Chemicals Company | Carbonaceous material with broad aggregate size distribution and improved dispersibility |
| US7847009B2 (en) | 2004-05-13 | 2010-12-07 | Columbian Chemicals Company | Carbonaceous material with dissociated aggregate size and particle size distribution and improved dispersibility |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0723434B2 (en) | 1995-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wang et al. | Carbon—silica dual phase filler, a new generation reinforcing agent for rubber: Part IX. Application to truck tire tread compound | |
| CN100421975C (en) | Tire components having improved modulus | |
| KR19980042424A (en) | How to Use Fullerene Carbon in Curable Rubber Compounds | |
| JPH03174470A (en) | Carbon black and rubber composition | |
| JPH0224335A (en) | Rubber composition | |
| JP3183934B2 (en) | Rubber composition for tire | |
| JPS62290738A (en) | Improved rubber composition | |
| JPS62277443A (en) | Improved rubber composition | |
| KR100705783B1 (en) | Tire tread composition filed nanofiber | |
| AU738877B2 (en) | Pneumatic tire for heavy duty use | |
| JP3827256B2 (en) | Carbon black for compounding functional parts rubber and rubber composition for functional parts containing the same | |
| JPH10251455A (en) | Rubber composition | |
| JPH0693136A (en) | Rubber composition for tire tread | |
| JP3456759B2 (en) | Furnace carbon black | |
| JPH0680786A (en) | Production of rubber composition for tire tread | |
| JP2832506B2 (en) | Furnace carbon black | |
| JP3948817B2 (en) | Rubber composition for tire tread | |
| JP3110809B2 (en) | Rubber composition | |
| JP3436574B2 (en) | Thermal type high structure furnace carbon black | |
| JPH06228372A (en) | Rubber composition | |
| JP2601321B2 (en) | Rubber composition for tire tread | |
| KR19990084685A (en) | Tire tread rubber composition for truck / bus with improved rolling resistance | |
| JPH05179065A (en) | Rubber composition for tire tread | |
| JP2007112983A (en) | Rubber composition for tire tread | |
| JPS63264647A (en) | Rubber composition for tire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |