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Silica granules, rubber composition, tire, production method for silica granules, and production method for rubber composition.

A technology of rubber composition and silica, which is applied in special tires, tire parts, transportation and packaging, etc., can solve problems such as poor workability, unstable scattering amount, uneven product quality, etc., and achieve the effect of excellent vulcanization speed

Inactive Publication Date: 2016-04-06
HARIMA CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silica powder is easy to scatter, so the workability at the time of compounding is poor, and the amount of scatter is not constant, so the compounding amount varies, and there is a problem that the quality of the product becomes uneven.

Method used

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  • Silica granules, rubber composition, tire, production method for silica granules, and production method for rubber composition.
  • Silica granules, rubber composition, tire, production method for silica granules, and production method for rubber composition.
  • Silica granules, rubber composition, tire, production method for silica granules, and production method for rubber composition.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0146] 180 parts by mass of water was added as a rosin-based resin, an ethylene oxide adduct of rosin (esterified product of rosin and polyethylene glycol (average number of moles of ethylene oxide added: 30), REO-30, Harima Chemicals Co., Ltd.) 5 parts by mass and styrene-acrylic acid copolymer (a copolymer obtained by copolymerizing styrene and methacrylic acid at a mass ratio of 7:3 (acid value 195, weight average molecular weight 10000) as a processing aid ) amine salt, solid content 28%) 1 part by mass to prepare a mixed solution.

[0147] Next, add the whole amount of the mixed solution obtained to NipsilAQ (BET specific surface area=205m 2 / g, dry bulk density 0.25g / cm 3 , silica powder, manufactured by Tosoh Silica Co., Ltd.) 100 parts by mass were stirred to prepare a silica paste.

[0148] Thereafter, the obtained silica paste was granulated using an extrusion granulator (12VR-250SDX, manufactured by Xilian Royal Co., Ltd.), and dried overnight at 110° C. with a dr...

Embodiment 2

[0151] Silica granules were obtained in the same manner as in Example 1, except that 5 parts by mass of a glycerol ester of rosin (DS-70L, manufactured by Harima Chemicals Co., Ltd.) was used as a rosin-based resin.

[0152] The average particle diameter of the silica granules is 4mm, the water content is 4.4% by mass, and the bulk density is 0.27g / cm 3 .

Embodiment 3

[0154] Amide compound using rosin (FLEX-REZ TM 1084ASC (manufactured by Lawter Co., Ltd.) was used as a rosin-based resin in 5 parts by mass, and a silica granulated product was obtained in the same manner as in Example 1.

[0155] The average particle diameter of the silica granules is 4mm, the moisture content is 4.5% by mass, and the bulk density is 0.27g / cm 3 .

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Abstract

In the present invention, silica granules are obtained by mixing silica and a rosin resin and subjecting the product to granulation.

Description

technical field [0001] The present invention relates to a silica granule, a rubber composition, a tire, a method for producing the silica granule, and a method for producing the rubber composition. Background technique [0002] It is known that in recent years, vehicle tires and the like contain silica powder as a filler from the viewpoint of reducing rolling resistance and improving fuel efficiency. [0003] Such silica powder is usually blended into a rubber composition that is a raw material for vehicle tires and the like. However, since the silica powder is easy to scatter, the workability at the time of compounding is poor, and since the amount of scatter is not constant, the compounding amount varies, and there is a problem that the quality of the product becomes uneven. [0004] Therefore, in order to prevent the scattering of silica, it has been considered to granulate silica and use it. Specifically, as such a silica granulation method, there has been proposed a m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/05B60C1/00C08J3/20C08K9/08C08L21/00C08L93/04
CPCB60C1/00C08K9/08C08L93/04C08J2393/04C08J3/212C08J2309/06C08J2409/00C08J2493/04C09C1/3072C09C1/3036C09C1/309C01P2004/64C01P2006/10C01P2006/12C01P2004/51C08L9/00C08L9/06C08L21/00C08J3/203C08K3/36C08L2205/02C08L2205/03
Inventor 扇刚士周霖宫本直树
Owner HARIMA CHEM INC
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