WO2003031511A1 - Composition de caoutchouc - Google Patents
Composition de caoutchouc Download PDFInfo
- Publication number
- WO2003031511A1 WO2003031511A1 PCT/JP2002/009879 JP0209879W WO03031511A1 WO 2003031511 A1 WO2003031511 A1 WO 2003031511A1 JP 0209879 W JP0209879 W JP 0209879W WO 03031511 A1 WO03031511 A1 WO 03031511A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- weight
- parts
- silica
- rubber composition
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
Definitions
- the present invention relates to a silicic compound rubber composition that has improved processability, dispersibility, abrasion resistance, wet friction performance, and overall characteristics of low heat generation.
- the aluminum content of silica is 0.35 to 3% by weight based on the weight of the silica force.
- silica which is generally used as a reinforcing filler for rubber
- the amount of aluminum contained in the silica is large and the amount of silanol in silica is large, the incorporation into the rubber is poor, and the Mooney viscosity is also high.
- the rubber composition containing such a silica-strong filler has poor additivity and dispersibility. Furthermore, it was found that when silica having a CTAB specific surface area and BETZCTAB ratio of silica within a predetermined range was used, abrasion resistance, wet friction performance, and low heat generation were improved. Was done. Disclosure of the invention
- the processability, dispersibility, and durability are controlled by controlling the aluminum content, the number of silanol groups, the CTAB specific surface area, and the BET / CTAB ratio of silica within an appropriate range and blending silica with the gen-based rubber.
- An object of the present invention is to provide a rubber composition having excellent abrasion, wet abrasion performance and low heat generation.
- L is 4, and the unit area equivalent Ri silanol groups comprises silica 1 0-1 0 0 parts by weight of 3.0 to 5.5 or Z nm 2
- a rubber composition is provided.
- a rubber composition further blended with a silane coupling agent in a blending amount determined by the following formula (I).
- silica used as a reinforcing filler in the rubber composition of the present invention silica whose aluminum content, number of silanol groups, CTAB specific surface area and BET / CTAB ratio are controlled within the above-mentioned predetermined ranges is preferable. It is based on the finding that the use of precipitated silica results in a rubber composition having excellent overall properties such as processability, dispersibility, abrasion resistance, wet friction performance and low heat build-up.
- the content of aluminum in silica Good results have been obtained when the amount is between 0.01 and 0.24% by weight.
- the aluminum content is 0.24 weight 0 /. If the viscosity exceeds, the silica is not well incorporated into the rubber, and the Mooney viscosity increases. Et al is, the Aruminiumu content when 0. 0 1 to 0.1 wt 0/0, better results in the properties.
- the silica of the present invention in order to secure the reinforcing property to that rubber, with silica mosquitoes C TAB specific surface area of 7 0 ⁇ 2 1 0 m 2 / g, and BET / C TAB ratio 1. 0 It is preferable to select 1.4.
- the CTAB specific surface area is less than 70 m 2 / g and the BE TZC TAB ratio is less than 1.0, it is difficult to secure reinforcement.
- the specific surface area of CTAB exceeds 21 Onn ⁇ Zg and the ratio of BET / CTAB exceeds 1.4, dispersibility deteriorates.
- the silanol per unit area of the silica force is improved in order to improve the processability and dispersibility, and to improve the wear resistance, the wet friction performance and the low heat generation, and the tan ⁇ balance.
- radix 3. 0 5. and child selected from 5 Koha 01 2 are preferred.
- the number of silanol groups is within the above-mentioned predetermined range, good workability, dispersibility, abrasion resistance, wet friction performance, and low heat generation can be improved with good balance. More preferably, it is a silica having a number of silanol groups of 4.8 to 5.5 / nm 2 , whereby good abrasion resistance can be maintained.
- the gen-based rubber component in the rubber composition of the present invention includes natural rubber (NR) and gen-based synthetic rubber, for example, polyisoprene rubber (IR), various styrene-butadiene copolymer rubber (SBR), Various types of polybutadiene rubber (BR), atalonitrinolinolebutadiene copolymer rubber (NBR), butyl rubber (IIR) and the like are used. These can be used alone or as a mixture of two or more. Wear. When used as a rubber mixture of two or more types of natural rubber and gen-based synthetic rubber, it is necessary to use a rubber mixture containing at least 60 parts by weight of natural rubber. Is preferred.
- NR natural rubber
- gen-based synthetic rubber for example, polyisoprene rubber (IR), various styrene-butadiene copolymer rubber (SBR), Various types of polybutadiene rubber (BR), atalonitrinolinolebutadiene copoly
- the rubber composition of the present invention contains the predetermined silica according to the present invention in an amount of 100 to 100 parts by weight, preferably 30 to 90 parts by weight, based on 100 parts by weight of the rubber component. Used in If the amount is too small, the desired effect cannot be obtained, and if the amount is too large, the hardness becomes too high or the processability deteriorates, so that the practicality as a rubber material becomes poor. Absent.
- the rubber composition of the present invention may further contain ordinary carbon black in addition to the above-mentioned silica as a reinforcing agent, and at least 10 parts by weight based on 100 parts by weight of the rubber component. Parts, preferably 10 to 80 parts by weight. If the compounding amount of the carbon black is too large, there is a problem in processing the rubber, and if the compounding amount is too small, the effect of the compounding (for example, prevention of deterioration by ultraviolet rays, imparting conductivity) is low.
- the rubber composition of the present invention further optionally contains a silane coupling agent in addition to the above essential components.
- a silane coupling agent any silane coupling agent conventionally used in rubber compositions can be used, and the amount of the silane coupling agent is determined by the following formula 1 It is preferable to use the compounding amount of the agent.
- the rubber composition of the present invention in addition to the above components, vulcanized or cross-linking agents, vulcanization or Crosslinking accelerator, various oils, anti-aging agent, plasticizer Various types of compounding agents used for tires and other general rubbers can be compounded, and these compounds are kneaded and vulcanized by a general method to form a rubber composition, and then vulcanized or crosslinked. Can be used to The amounts of these additives may be the conventional general amounts, as long as the object of the present invention is not adversely affected.
- the components excluding the vulcanization accelerator and sulfur from the rubber compounding ingredients shown in Table I were mixed for 3 to 5 minutes using a 1.8-liter closed mixer. After kneading, the vulcanization accelerator and sulfur were kneaded with an 8-inch open-mouthed kneader to the master patch released when the temperature reached 165 ⁇ 5 ° C to obtain a rubber composition. The Mooney viscosity of the obtained rubber composition was measured. Next, the above vulcanization accelerator was press-vulcanized with the composition in a mold of 15 ⁇ 15 ⁇ 0.2 cm at 160 ° C. for 20 minutes to obtain a test piece (rubber). Sheet), and the dispersibility, abrasion resistance and ta ⁇ (0 ° C, 60 ° C) were measured and evaluated.
- Noxeller CZ N-cyclohexynole-2-benzothia jilsulfonamide (Ouchi Shinko Chemical)
- Abrasion resistance Using a Lambourn abrasion tester (manufactured by Iwamoto Seisakusho Co., Ltd.), the abrasion loss was measured at a temperature of 20 ° C and a slip rate of 25%. The value was expressed as an exponent, as 100. The larger the value, the better the wear resistance.
- FIG. 3 shows the results of measurement and evaluation of a rubber composition obtained by blending each type of silicic acid and a predetermined amount of a silane coupling agent in the rubber compounding system. The results are shown in Table II.
- Amount of silane coupling agent (parts by weight) 6 6 6 6 6 6.25 5.6 8.5 10
- Zone volume (%) 0.6 0.6 0.1 0.1 0.1 / / iaj / nm), u. ⁇ U 0. ⁇ . u 0 c.o 0. ⁇ c, ⁇ ⁇
- Examples 1 to 3 and Comparative Examples 1 to 3 are examples in which the aluminum content and the amount of silanol were changed. Examples 1 to 3 in which both the aluminum content and the silanol amount were small had lower Mooney viscosities and better dispersion than Comparative Examples 1 to 3. In Comparative Examples 1 and 3 having a high silanol content, the ta ⁇ ratio (0 ° C / 60 ° C), which is a balance index between rolling resistance and wet wear performance, is also poor. In Example 6, the effect was confirmed up to 3.0 nm of silanol and Z nm 2 . Therefore, the aluminum content of 0.01 to 0.24% by weight and the silanol content of 3.0 to 5.5 Zn m 2 or less are favorable.
- Examples 4 and 5 and Comparative Examples 4 and 5 are sample examples in which the CTAB value was varied.
- the abrasion resistance was significantly deteriorated, and it could not be put to practical use.
- the dispersibility was slightly deteriorated, the Mooney viscosity was high, and the balance index of rolling resistance and wet friction performance was 1; & 113 ratio (0/60 ° 0 was also poor). Therefore, CTAB is preferably 70 to 210 m 2 / g.
- Example 6 and Comparative Example 6 are examples in which the BETZCTAB value was varied.
- Comparative Example 6 in which the BET / C TAB value is too high, the 0 ° (& 113) is low, and the ta ⁇ ratio (0 ° C / 60 ° C) is low. The effect has been confirmed up to 1.0.Therefore, the BE TZC TAB ratio is good in the range of 1.0 to 1.4.
- the rubber composition containing the predetermined silica and the predetermined amount of the silane coupling agent according to the present invention has excellent processability, dispersibility, abrasion resistance, wet friction performance, and low heat generation. It can be seen that the overall characteristics of the properties are extremely excellent.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Tires In General (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/433,100 US20040054060A1 (en) | 2001-10-09 | 2002-09-25 | Rubber composition |
JP2003534489A JPWO2003031511A1 (ja) | 2001-10-09 | 2002-09-25 | ゴム組成物 |
EP02768067A EP1447425A1 (en) | 2001-10-09 | 2002-09-25 | Rubber composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001-311839 | 2001-10-09 | ||
JP2001311839 | 2001-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003031511A1 true WO2003031511A1 (fr) | 2003-04-17 |
Family
ID=19130590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/009879 WO2003031511A1 (fr) | 2001-10-09 | 2002-09-25 | Composition de caoutchouc |
Country Status (5)
Country | Link |
---|---|
US (1) | US20040054060A1 (ja) |
EP (1) | EP1447425A1 (ja) |
JP (1) | JPWO2003031511A1 (ja) |
CN (1) | CN1476462A (ja) |
WO (1) | WO2003031511A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006335844A (ja) * | 2005-06-01 | 2006-12-14 | Yokohama Rubber Co Ltd:The | タイヤ用ゴム組成物 |
JP2007126523A (ja) * | 2005-11-01 | 2007-05-24 | Toyo Tire & Rubber Co Ltd | 空気入りタイヤ |
JP2008231271A (ja) * | 2007-03-20 | 2008-10-02 | Toyo Tire & Rubber Co Ltd | ゴム組成物及び空気入りタイヤ |
JP2012136581A (ja) * | 2010-12-24 | 2012-07-19 | Sumitomo Rubber Ind Ltd | タイヤ用ゴム組成物及びスタッドレスタイヤ |
JP2019506508A (ja) * | 2016-02-12 | 2019-03-07 | コンパニー ゼネラール デ エタブリッスマン ミシュラン | 実質的に球状の比較的構造化されていないシリカを含むゴム組成物 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8078100B2 (en) * | 2002-10-15 | 2011-12-13 | Qualcomm Incorporated | Physical layer repeater with discrete time filter for all-digital detection and delay generation |
US10023723B2 (en) * | 2007-06-05 | 2018-07-17 | Momentive Performance Materials Inc. | Process for preparing rubber compositions and articles made therefrom |
CN104961982A (zh) * | 2015-07-28 | 2015-10-07 | 太仓市晨洲塑业有限公司 | 一种改性丁基橡胶 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5089554A (en) * | 1985-09-13 | 1992-02-18 | Rhone-Poulenc Chimie De Base | Silica reinforced elastomers |
US5882617A (en) * | 1993-09-29 | 1999-03-16 | Rhone-Poulenc Chimie | Precipitated silicas |
EP0994150A1 (en) * | 1998-10-15 | 2000-04-19 | The Goodyear Tire & Rubber Company | Preparation of reinforced rubber |
JP2001158837A (ja) * | 1999-12-02 | 2001-06-12 | Bridgestone Corp | ゴム組成物及びそれを用いた空気入りタイヤ |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5929157A (en) * | 1996-04-22 | 1999-07-27 | Sumitomo Rubber Industries, Ltd. | Rubber composition for tire sidewall and tire |
DE19840153A1 (de) * | 1998-09-03 | 2000-04-20 | Degussa | Fällungskieselsäure |
JP3678627B2 (ja) * | 2000-04-11 | 2005-08-03 | 横浜ゴム株式会社 | ゴム組成物 |
-
2002
- 2002-09-25 EP EP02768067A patent/EP1447425A1/en not_active Withdrawn
- 2002-09-25 CN CNA028031466A patent/CN1476462A/zh active Pending
- 2002-09-25 JP JP2003534489A patent/JPWO2003031511A1/ja active Pending
- 2002-09-25 WO PCT/JP2002/009879 patent/WO2003031511A1/ja not_active Application Discontinuation
- 2002-09-25 US US10/433,100 patent/US20040054060A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5089554A (en) * | 1985-09-13 | 1992-02-18 | Rhone-Poulenc Chimie De Base | Silica reinforced elastomers |
US5882617A (en) * | 1993-09-29 | 1999-03-16 | Rhone-Poulenc Chimie | Precipitated silicas |
EP0994150A1 (en) * | 1998-10-15 | 2000-04-19 | The Goodyear Tire & Rubber Company | Preparation of reinforced rubber |
JP2001158837A (ja) * | 1999-12-02 | 2001-06-12 | Bridgestone Corp | ゴム組成物及びそれを用いた空気入りタイヤ |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006335844A (ja) * | 2005-06-01 | 2006-12-14 | Yokohama Rubber Co Ltd:The | タイヤ用ゴム組成物 |
JP2007126523A (ja) * | 2005-11-01 | 2007-05-24 | Toyo Tire & Rubber Co Ltd | 空気入りタイヤ |
JP2008231271A (ja) * | 2007-03-20 | 2008-10-02 | Toyo Tire & Rubber Co Ltd | ゴム組成物及び空気入りタイヤ |
JP2012136581A (ja) * | 2010-12-24 | 2012-07-19 | Sumitomo Rubber Ind Ltd | タイヤ用ゴム組成物及びスタッドレスタイヤ |
JP2019506508A (ja) * | 2016-02-12 | 2019-03-07 | コンパニー ゼネラール デ エタブリッスマン ミシュラン | 実質的に球状の比較的構造化されていないシリカを含むゴム組成物 |
Also Published As
Publication number | Publication date |
---|---|
EP1447425A1 (en) | 2004-08-18 |
JPWO2003031511A1 (ja) | 2005-01-20 |
CN1476462A (zh) | 2004-02-18 |
US20040054060A1 (en) | 2004-03-18 |
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