What is the function of silica in rubber?

Author：

Release time：

2025-03-27

In rubber products, silica has a number of important functions. Firstly, silica can significantly improve the physical properties of rubber products, including hardness, abrasion resistance, tear resistance and tensile strength. For example, adding an appropriate amount of silica to silicone rubber can significantly improve its strength, increasing the tensile strength of the vulcanized rubber to 14 MPa, demonstrating a significant reinforcing effect.

In rubber products, silica has several important functions. First, silica significantly improves the physical properties of rubber products, including hardness, abrasion resistance, tear resistance, and tensile strength. For example, adding an appropriate amount of silica to silicone rubber can significantly improve its strength, increasing the tensile strength of the vulcanized rubber to 14 MPa, demonstrating a significant reinforcing effect.

In addition, silica can reduce the rolling resistance of rubber and improve its skid resistance without sacrificing cutting and tear resistance. In tire manufacturing, silica-filled rubber compounds, compared to ordinary carbon black-filled rubber compounds, can reduce rolling resistance by 30%, and their reinforcing and wear resistance are close to that of carbon black, and they can even replace part of the carbon black.

The role of silicon dioxide in rubber

Brazil's anti-dumping investigation into precipitated silica imported from China is concluded

Return to list

Related information

2024 National Inorganic Silicon Compound Industry Association Annual Meeting & Green Low-Carbon Development Summit Forum, China Inorganic Salt Industry Association Inorganic Silicon Compound Branch

2025/04/02

The Secrets of Silicon Dioxide

Silicon dioxide, including silicon dioxide for the rubber industry, feed additives, and other applications, is mainly used in the following areas.

2025/03/27

How does the addition of nano-silica affect the performance of rubber?

When the amount of nano-silica added is low, the tensile strength of the rubber usually increases with the increase of the amount added. This is because nano-silica can act as a reinforcing agent, forming physical or chemical adsorption with rubber molecular chains. For example, in natural rubber, when the amount of nano-silica added increases from 0 to 5 phr (parts per hundred rubber), the tensile strength may gradually increase. The reason is that nano-silica particles interact with rubber molecular chains, and can effectively transfer and disperse stress during stretching, preventing the slippage of rubber molecular chains, thus improving tensile strength.

2025/03/27

Toll-free number/sales hotline

+86-598-3706061

Sales Department Vice President Chen

+86-13850880719

sales@youkenchem.com

Address：

Dadaokou Village, Xiaotao Town, Yong'an City, Fujian Province

Business License

SEO

COOKIES

Our website uses cookies and similar technologies to personalize the advertising shown to you and to help you get the best experience on our website. For more information, see our Privacy & Cookie Policy

COOKIES

required

These cookies are necessary for basic functions such as payment. Standard cookies cannot be turned off and do not store any of your information.

analyze

These cookies collect information, such as how many people are using our site or which pages are popular, to help us improve the customer experience. Turning these cookies off will mean we can't collect information to improve your experience.

Feature

These cookies enable the website to provide enhanced functionality and personalization. They may be set by us or by third-party providers whose services we have added to our pages. If you do not allow these cookies, some or all of these services may not function properly.

advertise

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.