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Driving is exciting, but the brakes gets you to your destination safely.
Brakes are vital for safety in transportation.
The good news is Showa Denko Group’s Molecular Sieve technology can enhance its function.
This time we introduce composition of brake pad and the technology used in it.
1）About brake pad
There are three basic movements of a car: cruising, turning, stopping. Among these functions, stopping is the utmost important for safety. The brake is responsible for stopping and its function is to slow and stop the car. Brake pad is one of the most important parts of braking. It is mainly used in a car or motorcycle.
2）How the brakes stop the movement
When you need to slow down or stop when driving, you can do so by stepping on the brake pedal. When the pedal is pressed, the master cylinder is activated and hydraulic pressure is generated by the brake oil in response to the pressing force.
The hydraulic pressure is transmitted to the wheel cylinder of each wheel, through brake pipe and brake hose. The pistons in the wheel cylinders push the brake pads against the disc rotor, which slows down the vehicle.
3）Structure of brake pads
The brake pad is essential part to firmly stop a vehicle.
There are 10 ~ 20 kinds of raw materials combined in the brake pad. These raw materials are blended and divided into three categories based on their roles:
1. Binders are used to solidify the raw materials and ensure strength. Currently, phenolic resin is mainly used.
2. Reinforcing materials is responsible for ensuring the strength of the friction material. Various types of organic and inorganic fibers are used, such as aramid and metallic fibers.
3. Friction modifiers are mainly used to adjust the strength of the effect of friction materials.
It is designed to improve or stabilize the friction strength. Various raw materials such as lubricants, organic fillers, inorganic fillers, grinding materials, and metal powders are blended as needed.
4）Idea for improving the performance of brake pads
The brake pads wear out little by little as they rub against the discs. But even for safety reasons, it is inconvenient if you had to replace the brake pads frequently to drive your vehicle with a peace of mind.
Therefore, brake pads are also required to have durability and wear resistance. In the case of automobiles, Japanese brake pads are designed to run – under normal condition – without replacement for at least three years before the first vehicle inspection. In order to achieve this, they must be resistant to wear.
After driving for a long period, the friction material such as rubber or resin will decompose and gasify beyond the heat resistance temperature. And when it enters between the brake rotor and the material, the gas film will act like a lubricant and reduce the friction force.
MOLECULAR SIEVES as friction material can prevent this phenomenon by accelerating the contact decomposition reaction and remove the liquid decomposition generated due to thermal decomposition on the sliding surface.
This is how the life of the brake pads is prolonged.
How did you like it?
In this way, the Showa Denko Group supports a safe automotive society with its unique technologies.
Showa Denko Group also handles molecular sieves for brake pads.
Let us know your enquiry soon!