Unlock instant, AI-driven research and patent intelligence for your innovation.

Hydrous silicic acid for rubber reinforcement filling

A rubber-reinforced, silicic acid technology, applied in the fields of silicon compounds, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as the lack of water-containing silicic acid, and achieve the effect of improving wear resistance

Active Publication Date: 2019-11-05
TOSOH SILICA CORP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hydrous silicic acid that can provide satisfactory rubber properties has not been obtained, and further modification of hydrous silicic acid is strongly desired while researching rubber formulations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrous silicic acid for rubber reinforcement filling
  • Hydrous silicic acid for rubber reinforcement filling
  • Hydrous silicic acid for rubber reinforcement filling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] In order to cause the coagulation of the silicic acid primary particles more quickly, the reaction of increasing the initial concentration of sodium silicate is carried out. As a result, denser aggregates are formed than in Comparative Example 1 described later, and a more developed pore structure is formed, so that a large number of pores of various radii can be formed, and hydrous silicic acid having a wide pore distribution can be produced. . Specifically, 80 liters of water and 14 liters more than usual sodium silicate aqueous solution (SiO 2 150g / l, SiO 2 / Na 2 O mass ratio 3.3), heating makes temperature be 82 ℃. SiO at this time 2 The concentration was 22 g / l and the pH was 11.5.

[0091] In order to carry out the neutralization reaction by excess sulfuric acid, the reaction which produces|generates the hydrous silicic acid which has a wide pore distribution is performed by forming the silicic acid whose particle size is non-uniform. Specifically, while mai...

Embodiment 2

[0094] The obtained filter cake is emulsified, in this emulsion, relative to the amount of silicic acid in the filter cake according to Al 2 o 3 / SiO 2 Except adding sodium aluminate in an amount of 0.30% by mass ratio, hydrous silicic acid was produced and evaluated in the same manner as in Example 1.

Embodiment 3

[0096] The obtained filter cake is emulsified, in this emulsion, relative to the amount of silicic acid in the filter cake according to Al 2 o 3 / SiO 2 Except adding sodium aluminate in an amount of 0.50% by mass ratio, hydrous silicic acid was produced and evaluated in the same manner as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The present invention provides a hydrous silicic acid for rubber reinforcement filling, which can provide a rubber composition with further improved abrasion resistance than conventional ones. The invention relates to a kind of hydrous silicic acid for rubber reinforcement filling, and its CTAB specific surface area is 160m 2 / g or more, the peak of the pore distribution obtained by the nitrogen adsorption-desorption method is in the range of pore radius 10 to 24 nm, and the pore radius x of the pore distribution showing the half value of the peak of the pore distribution is set to When x1 and x2 (x2>x1), x1 is 55% or less of the pore radius at the peak of the pore distribution, and x2 is 190% or more of the pore radius at the peak of the pore distribution.

Description

technical field [0001] The present invention relates to hydrous silicic acid for rubber reinforcement filling. Specifically, the present invention provides a hydrous silicic acid useful as a filler for rubber reinforcement that improves the wear resistance of rubber when blended with diene rubber in natural rubber or synthetic rubber. Useful for reinforcing rubber industrial products that require abrasion resistance. [0002] Cross-reference of related applications [0003] This application claims priority based on Japanese Patent Application No. 2015-118783 for which it applied on June 12, 2015, and all descriptions are taken in this specification as a special disclosure. Background technique [0004] Hydrous silicic acid is known under the name white carbon black and has traditionally been used as a rubber reinforcing filler along with carbon black. For hydrous silicic acid, vulcanized rubber is excellent in thermal aging resistance, tear resistance, bending crack resis...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C01B33/193C08K3/36
CPCC01B33/193C08K3/36C08L21/00C08K2201/006
Inventor 金满秀夫米井英伸伊藤悠轨古城大祐
Owner TOSOH SILICA CORP