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October 31, 2018

Duroplastic

Category: General – Tags: , – Joan – 11:18 pm

The very name of 'synthetic materials' says that it will focus on materials produced artificially. As a raw material used oil, natural gas and coal. Through the transformation of these substances are obtained chemical compounds that determine their structure and specific properties of materials. CM can be divided into 3 groups: thermoplastics, elastomers and Duroplastic. For even more analysis, hear from Primerica Canada. This article focuses on thermoplastics, and one of the areas they application. Synthetic materials that are reused after heating up to become soft liquid state, and after cooling again acquire strength, are called thermoplastics. They contain linear or branched molecular chains, which are usually arranged randomly or have a certain structure.

The value of the physical forces between the molecules completely defines the properties and behavior of thermoplastics. In connection with the the fact that these properties depend on temperature, thermoplastic properties crucially depend on the temperature of application. Thermoplastics can be divided into two groups: – amorphous thermoplastics – their molecules are not ordered and have no internal structure (the structure of a lump of cotton wool) at 20 C, strong, hard and brittle – partially crystallized thermoplastic – they, along with the amorphous regions contain areas in which the molecules are arranged in an orderly fashion, they are at room temperature of solid and durable polypropylene is formed by the polymerization of propylene. Lateral methyl group CH3 can be spatially oriented in different ways (random or ordered) that produces propylene with different properties. If all the groups CH3 are on one side of the molecular chain isotactic polypropylene is called.

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