Plastics are macromolecules made from monomers as raw materials and polymerized by addition or Condensation polymerization
Commonly known as plastic (plastics) or resin (resin), it can freely change the composition and shape of the body, composed from synthetic resins and fillers, plasticizers, stabilizers, lubricants, pigments and other additives
The main component of plastics is resin. The name of resin is created from animal and plant lipid, such as rosin, shellac. Resin is macromolecules which not mixed with various additives. Resin have 40% to 100% of the total weight of plastics. The basic properties of plastics depend mainly on the nature of the resin, but additives also play an important role. Some plastics are made up of synthetic resins, with little or without additives such as Polymethyl methacrylate and polystyrene.
The plastic, in fact, it is a kind of synthetic resin, the shape is similar to the natural resin with pine resin, and making artificial synthesis by chemical, so it called plastic.
Early rubber was made from latex of rubber trees, rubber grass and other materials made of flexible, insulating, impermeable and air. High elastic polymer compound, it is divided into two kinds: natural rubber and synthetic rubber. Natural rubber is made from rubber, tree, rubber, grass and other plants. The synthetic rubber is obtained by polymerization of various monomers.
From the appearance of rubber: rubber can be divided into solid rubber (also known as dry rubber), emulsion rubber (referred to latex), liquid rubber and powder rubber four categories.
From the properties and uses of rubber: in addition to natural rubber, synthetic rubber can be divided into general synthetic rubber, semi general synthetic rubber, special synthetic rubber and special synthetic rubber.
From the physical form of rubber: rubber can be divided into hard and soft plastic, rubber and rubber etc.
From performance and use: general rubber and special rubber.

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