Copolymer

It is stated that due to the lack of unsaturated bonds of ethylene-propylene rubber in 1963, it was called a copolymer was known, unfortunately, it was not possible that it did not have a special and obvious feature such as being able to be baked; but if non-conjugated D can enter the special structure of this elastomer. Surely you can You can vulcanize the desired rubber, which now has a double bond, in a special way with sulfur, which is called EPDM, but it should not be forgotten that the monomer present in double bonds is less than 5%. because this rubber works in this way because its ethylene and propylene are irregular copolymers. You may not know, but the effect of monomers on polyethylene is very interesting, because in this chain, 60 up to 80% ethylene was considered and you can easily consider commercial rubber that exists in different types and basically 55 to 70% can be considered to have ethylene weight, of course you can consider different types of elastomers in this section Take it.

The role of propylene

You may ask yourself how propylene exists in the copolymer, so it is better to remember; So that the chain does not have a special order and also ethylene cannot be seen in a crystalline form. Undoubtedly, everything will have a better result if it follows its natural path, such as the hydrogenation operation, which can proceed completely naturally. It will be able to produce a very special copolymer of ethylene-propylene rubber. In this way, the important and main chain is saturated, it is not possible to achieve sulfur baking in this chain. If you want to cook, it is better that the double bonds, which you usually know as the third monomer, are created as a branch next to the main chain, thus creating a kind of molecular structure, because in this case, the molecular structure you want It's changed to a terpolymer state and because it hangs in the form of links it can be cured with sulfur because of the main chain it's holding. Put rubber against gas if you will. Introduce ozone with high durability and resistance to aging; it is best to do this on side groups that are likely to be branched; Include the double bond in the main chain; But you can consider three DN models to add to the ethylene-propylene copolymer chain. Properties of EPDM If we want to talk about the properties of EPDM, you should remember these points: The first thing you should keep in mind is that the molecular weight of the polymer is mainly determined by the catalyst and polymerization method. has arrived and in principle it even changes, but the next point is that the rubber in question has high durability and endurance against ozone, and the reason for this durability and endurance should undoubtedly be attributed to the saturation of the main chain of the aforementioned polymer. \ n Abundant elasticity and excellent heat durability have made EPDM to have very high properties. But it is better to know that EPDM has two strengths and weaknesses, compared to solvent. Such as aromatic, aliphatic and in many situations chlorinated hydrocarbons unfortunately show their weakness, but remember this point that polar solvents such as: alcohols and ketones show their strength show off strongly. arranging in two places they can also defend themselves or on the contrary show themselves completely surrendered in this way that due to their high chemical durability against many bases and Also, acids have a unique defense, but against oils that are non-polar, it will definitely succumb, and you should not forget that EPDM is a special elastomer, which is the only type that can achieve its insulating properties of sixty Kv in many cable models. keep in mind.

Application of EPDM

In the lubrication industry, you can undoubtedly use the high elasticity properties of the polymer. Do not neglect EPDM, and of course, you have also felt the special use of EPDM for covering all types of cables and in some conditions, even many EPDM car parts, and even in many floorings that have been used in many playgrounds, because it is very durable and EPDM has excellent and unique wear. It should be mentioned that Dutral polymers are produced and manufactured in Italy, and even Pasargad Oil Trading can be considered as an importer of EPDM.