Carbon black and rubber composition

A technology of rubber composition and carbon black, applied in fibrous fillers, tire parts, transportation and packaging, etc., can solve the problem of low heat generation and achieve the effect of improving reinforcement

Inactive Publication Date: 2016-12-14
TOKAI CARBON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, rubber excellent in reinforcement and low in heat generation is required for the tread portion of a low-fuel consumption tire. The particle size and specific surface area are completely different, and they are in a reverse relationship, so it is difficult to obtain the desired rubber composition by adjusting the particle size and specific surface area of ​​the carbon black compounded.

Method used

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  • Carbon black and rubber composition
  • Carbon black and rubber composition
  • Carbon black and rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] use figure 2 The shown fluidized bed reaction furnace 1 having a substantially cylindrical shape with a furnace axis extending in a vertical direction was used to produce carbon black.

[0091] figure 2 The casing of the fluidized bed reactor 1 shown is made of SUS304, and the inner wall is made of mullite. The reactor main body 2 constituting the fluidized bed reactor 1 has a gas inlet 21 ( Inner diameter 50mm), there is exhaust port 22 (inner diameter 30mm) at the top of reaction furnace main body 2 simultaneously. Additionally, if figure 2 As shown, the fluidized bed reactor 1 has a heating coil 3 formed by helically winding an electric heating wire on the entire furnace wall outer peripheral surface of the reactor main body 2, and has a stirring area 4 (inner diameter 100mm, Height 200mm) heating structure.

[0092] Moreover, the filter 5 made from SUS was installed in the connection part of the reaction furnace main body 2 and the gas introduction port 21 (s...

Embodiment 2～ Embodiment 6

[0096] For raw carbon black 1 in embodiment 1, change to raw carbon black 2 in embodiment 2 (nitrogen adsorption specific surface area is 120m 2 / g, DBP absorption is the carbon black of 110ml / 100g), in embodiment 3, change to raw material carbon black 3 (nitrogen adsorption specific surface area is 101m 2 / g, DBP absorption is the carbon black of 90ml / 100g), in embodiment 4, change to raw material carbon black 4 (nitrogen adsorption specific surface area is 75m 2 / g, DBP absorption of 99ml / 100g of carbon black), raw material carbon black 5 (nitrogen adsorption specific surface area of ​​70m 2 / g, carbon black with DBP absorption of 89ml / 100g), raw material carbon black 6 (nitrogen adsorption specific surface area is 71m 2 / g, DBP absorption amount is 84ml / 100g of carbon black), and by processing in the same manner as in Example 1, each of Carbon Black 2 to Carbon Black 6 was obtained.

[0097] The obtained carbon black 2-carbon black 6 nitrogen adsorption specific surface a...

Embodiment 7～ Embodiment 10

[0108] Change the feed rate of hydrocarbon gas in Example 1 to: 6.7 Nm in Example 7 3 / h, embodiment 8 is 7.5Nm 3 / h, embodiment 9 is 8.0Nm 3 Be 8.2Nm in / h, embodiment 10 3 / h, and other than that, by performing the same treatment as in Example 1, each of Carbon Black 7 to Carbon Black 10 was obtained.

[0109] The obtained carbon black 7-carbon black 10 nitrogen adsorption specific surface area, DBP absorption, aggregate pore mode particle size Dmp, aggregate pore size distribution half-value width ΔDmp and according to the above-mentioned aggregate pore mode particle size Dmp and Table 3 shows ΔDmp / mode particle diameter Dmp defined by the half-value width ΔDmp of the aggregate pore size distribution.

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Abstract

Provided is a completely novel carbon black whereby rubber characteristics such as reinforcing properties and heating characteristics can be improved. A carbon black characterized by having an aggregate void mode diameter (Dmp) of 25 nm to 60 nm calculated by a mercury penetration method, and the ratio [delta]Dmp / mode diameter (Dmp) specified by the aggregate void mode diameter (Dmp) and the full width at half-maximum [delta]Dmp of the aggregate void diameter distribution calculated by the mercury penetration method is 0.30 to 0.56.

Description

technical field [0001] The present invention relates to a carbon black capable of imparting low heat build-up to compounded rubber, particularly carbon black for tire tread rubber suitable for use under severe running conditions, and a rubber composition. Background technique [0002] As carbon black for rubber reinforcement, there are many varieties corresponding to the characteristics. Since these characteristics are the main factors used to determine the various properties of the rubber, when compounding the rubber composition, select the appropriate carbon black. Characteristic carbon black for component applications. [0003] For example, when a highly reinforcing rubber member such as a tire tread portion is required, hard rubber with a small primary particle size, a large specific surface area, and a high structure such as SAF (N110) and ISAF (N220) have been used. Although these carbon blacks are based on carbon black, rubber obtained from a rubber composition blend...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/48B60C1/00C08K3/04C08L21/00
CPCB60C1/00C09C1/48C08L21/00C08K2201/003C08K2201/006C08K2201/011C08K3/04C08L7/00B60C1/0016C01P2006/12
Inventor 栗栖研吾内山央己
Owner TOKAI CARBON CO LTD
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