Перевести без переводчика: Synthetic polymers and their application

[email protected] в категроии Английский язык, вопрос открыт 12.06.2018 в 18:32

Polymers are the dynamic part of industry, particularly plas­tics and fibres. A polymer is a substance consisting of molecules and characterized by its viscosity colour and by its softening po­ints. Until recently it was thought that the properties of the po­lymers were determined only by the chemical structure of their molecules. Chemists after many years of research have established that the properties of polymers produced are largely determined by the pattern of their big molecules. The properties of polymers de­pend on their super-molecular structure.

Polymers just like metal a can be alloyed, i.e. groups diffe­rent in composition may be introduced into the structure of the polymers. A study has been made of possible variants of structural patterns of different polymers and of ways of developing the requi­red structures. This has opened up the possibility for developing substances with scheduled properties.

High molecular compounds possessing a great variety of valuable properties, they can therefore be used in a wide range of things.

The main concern of researchers and engineers is to improve the quality of mass produced goods.

The so-called "aging" of material is a result of deterioration in the properties of polymers due to chemical and physical changes caused by the effect of light, heat and humidify. Many laboratories are conducting research to prevent these processes.