Rubber raw materials

There is no specific time for the rubber industry in terms of historical events, but evidence shows that the natives of Central America extracted sap from some trees that later It was called latex; they used to make the raw materials of rubber. In 1829, Cuddyer and Mackintosh from England realized that combining natural latex with sulfur and heating these materials caused them to become Different shapes and modes can be used. This process is called vulcanization, in which the rubber is oxidized and reduces the cellophore and turns it into sulfide. If the temperature is 110 degrees Celsius, and at the end, rubber materials such as solid rubber was produced. In this article in the magazine Oil Pasargad we will take a look at them.  

Evolution in the rubber industry

with Years passed by using carbon black, which was produced as a good filler and additive; inflatable tires and tubes were prepared, after which synthetic tires were prepared and entered the market, and then rubber Synthetic rubbers grew in the market and because they were economical, they could sell well. But natural or ordinary rubbers alone were not particularly efficient because they did not have properties such as impermeability and resistance. and they had to be created using different materials and machines. Google is prepared and reacts with Baspar network materials; The network connections of this model can be transversal and mono, di, and poly whose connection is determined by the concentration of sulfur, accelerator, and temperature retainer; But what is an accelerator? Accelerators are compounds that greatly reduce the time required for the reaction of rubber to a few minutes, and less sulfur is needed. \ n  

Antioxidants

Antiaging substances or antioxidants are used in the composition of tires. These materials protect rubber parts from oxygen and ozone attacks and are also classified as anti-oxidant, anti-ozone and anti-bending cracks. Their process is such that they stop the radical chain reactions and then prevent further destruction of the chain. Industrial materials are generally amines and phenols, which are strong protectors that are very effective in tires. Tires, profiles and the like are produced using the plastic extrusion method, which is then baked. The car tire is an example that made me realize that most of the consumption of rubber in transportation is for tires. The tires that exist now may not have a tube, in this case they have a protective layer in which the butyl rubber is placed with this perforated tube. Due to the fact that butyl rubber is ineffective or dead, it has a great resistance to the passage of air. In today's high-tech cars, rubber is also used in the engaged strip, electric wiper, engine chassis and seats; So that every car today has between 115 kg of rubber in its different parts. Waste is produced from the combination of rubber parts. These parts are first crushed and then separated using chemical, mechanical, etc. methods. Recycled rubber is given to a very large amount and has a high level of soot, ash or pigment. Now that we have mentioned most of the materials that make up rubber, it is better to take a look at rubber derivatives. Natural rubber is used as a raw material in the production of various rubber derivatives. Today, the plastic industry works on chemicals because rubber itself is one of the most expensive raw materials. Halides with rubber at the time of double bonding can be used like chlorinated rubber as a color additive, which is highly resistant to chemicals.