Described to Making Tyres


How to make tyres:

Here is information on how to make tyres

Tyres image

es. This is for educational purpose only. Please do not try this at home. Any rubber formulation is a closely guarded secret so please do not write to us to elaborate.

In this example, we will walk through making an automotive tire rubber. Making Tyre rubber is a lot like baking bread. You start with right kind of ingredients, measure twice, mix well, heat properly, and exercise patience.  At the end you have a masterpiece worthy of trusting yours and your family’s life on it.

That humble black piece of rubber touching the pavement is actually a scientific rubber marvel. It has to withstand heat from sun, air, and ground, resists wear and tear from abrasion and friction, and at same time stay supple enough to grip the road in arctic to desert condition. And stay strong enough to hold up the weight of your car. And we haven’t even started talking about specialty tyres like racing tyres, run-flat or off-road tyres.

INGREDIENTS:

1) Polymers: You start with SBR, EPDM, polybutadine. These synthetic polymers are superior than natural rubber. They are flexible yet strong. They give adhesion yet yields long-life. SBR is the most commonly used polymer for car tires for its relative economy. (Well, it’s the cheapest polymer thus far)

2) Fillers: You add cheaper fillers to expensive polymers. The fillers reinforces the polymers by adding strength and improved mechanical properties. Use carbon black, silica, clay, titanium oxide. When someone does a burn-out or leaves a skid mark, you will notice that it’s a long strip of black patch. You are seeing carbon black. Try using nano-carbon, or nano-titanium oxide and you get to brag you are riding on nano-tyres.

3) Softeners: As the name indicates they control stiffness of the mixture and add increased processability. Use hydrocarbon oil, resins.

4) Antidegradants: It protects against heat, oxygen, ozone… Use para-phenylenediamine. Sometime these are called anti-oxidants, not to be confused with anit-ozonates. It has a side benefit of lubricating the mixture.

5) Curatives: Cures the soft polymers into tough yet elastic compound. Use sulfur, sulfemamides.

6) Activators: They aid curatives to do their job more effectively. Use zinc oxide, stearic acid.

Of course, the modern tires are usually radial in construction (nylon or steel belted) so that’s another layer of science which we will not cover here. Unlike the tires on the family sedan, racing tires aren’t made to last much longer than one tank of gas. Counting practice, qualifying and the race, teams went through as many as 15 sets of tires during the racing weekend at Atlanta, proving again it’s tyres that make the NASCAR Nextel Cup Series go ’round.

tyres test

“To most teams, Tyres are an expendable commodity,” said Chad Fletcher, marking manager for NASCAR at the Goodyear Tire and Rubber Co. “It’s the cheapest way to go fast.”

New tyres — sometimes called “stickers” — can turn an average car into a speeding bullet. They provide extra grip that gives a car a quick burst of speed for a couple laps. As the tires wear, they lose grip and lap times fall off.

Goodyear has 19 different compounds, which includes tyres built especially for the left side of the car and tyres built for the right. Drivers are asked to test different compounds to decide on a specific compound for the left- and right-side of the car. Once Goodyear picks a compound, that specific tyre is the only one allowed by NASCAR.

Australia Classified Site

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