Urea, petroleum, mercury, synthetic rubber can be used as car tires

We all know that the main raw material of tires is rubber, but only rubber is far from enough, and various additives need to be added to it, so that tires have good elasticity, low rolling resistance, low fuel consumption, low heat generation, wear resistance, puncture resistance, large bearing capacity, ride comfort and other properties, which largely depend on the opening and selection of tire raw materials.

Here are some of the new tire raw materials and additives that have emerged in recent years.

Oil-filled natural rubber (OENR): It not only greatly reduces rolling resistance, but also improves ice grip performance at the same time.

Polybutadiene rubber: Polybutadiene rubber and polystyrene-butadiene rubber can be used together as fuel-saving tire tread rubber, with this tread rubber has the best comprehensive balance of grip and wear, as well as lower rolling resistance, can save fuel5.

Foamed rubber: Foamed rubber refers to rubber with many microscopic individual bubbles. When the foaming rate is 20 30, the ice friction coefficient can be increased by 3 4 times.

In this way, by increasing the coefficient of friction on ice, the braking distance of the tires can be shortened by 10 15. Studless tires made of foamed rubber have a similar friction on ice, although not as good as studded tires.

Polyurethane elastomer: It has the advantages of high wear resistance, colorability, high cutting resistance, excellent oil and chemical resistance, etc., and has no toxic effect on the human body, and can be completely biodegradable, and does not need to add carbon black and aromatic oil, which is an ideal material for manufacturing tire tread.

Silicone: Silicone, also known as hydrated silica, activated silica and precipitated silica, can achieve high wet road traction performance and wet road braking performance by using a special polymer and silica silane system, and reduce fuel consumption by 5% by reducing rolling resistance.

BOTRED (a new starch-based filler): BOTRED is a new starch-based filler. Corn starch derivatives are extracted from corn, turned into microdroplets, and then processed to convert into biopolymer fillers.

The blotred is a spherical particle that minimizes mechanical energy and reduces rolling resistance.

Short fiber: The addition of short fiber can improve the rigidity of the tire, so that the sinking amount of the tire is significantly reduced when bearing the same load during driving, that is, the deformation of the tire is reduced, and the rolling resistance is also reduced; When staple fiber is used for tire tread, it can not only improve the rigidity of the tread, but also reduce the friction coefficient of the tread, reduce the rolling resistance coefficient, and reduce the rolling resistance accordingly. When staple fibers are applied to tire tread and other parts, the modulus and anisotropy of staple fibers can be used to change the properties of the compound to reduce the noise of the tire during driving, and to improve the durability of the tire.

Silicone formulation: The core is to add silicon material to the tread rubber, which produces less energy loss while having excellent grip, thereby reducing rolling resistance and abrasion, achieving better fuel efficiency than ordinary tires, and extending tire life as much as possible.

Synthetic rubber is extracted from petroleum, so petroleum can be used to make tires, but it requires extremely complex processing and a lot of auxiliary materials.

Synthetic rubber can be used as a material for automobile tires

Mercury is the only liquid metal at room temperature and can be used to make thermometers Table salt is often used as a condiment in life

So the answer is: synthetic rubber; Mercury; Table salt

Synthetic rubber can be used as a material for automobile tiresMercury is the only liquid metal at room temperature and can be used to make thermometers; Urea contains the N element required for action generation and can be used as nitrogen fertilizer; Oil is known as the "blood of industry";

So the answer is: synthetic rubber; Mercury; Urea; Petroleum;

Synthetic rubber can be used as a material for automobile tiresMercury is the only liquid metal at room temperature and can be used to make thermometers; Urea contains the N element required for action generation and can be used as nitrogen fertilizer; Oil is known as the "blood of industry";

So the answer is: synthetic rubber; Mercury; Urea; Petroleum;

1) Synthetic rubber; Mercury; Urea; Petroleum;

2）13g；

The mass ratio of carbon to hydrogen is 12:1 (or the mass ratio of hydrogen to oxygen is 1:12).