Polymer plastic properties

1.Definition
The main components of polymer plastics are mainly polymer compounds, whose molecular weight is about 1 000, which is only for the physical concept. At present, polymer plastics are widely used, but the daily use of plastic is synthesized by polymer compounds, usually called high or macromolecule, is synthesized by monomer raw materials or raw materials into integrated materials, and through the later development, and fusion resin, color, stabilizer and other additives. The shape of polymer plastic can be changed freely and can be designed according to the user’s requirements.
2.Characteristics
Polymer plastics not only have their own unique, that is, arbitrary changes in the shape, but also have viscoelasticity. Polymer plastic, if subjected to external forces, its body will produce high elastic deformation, viscous flow, polymer plastic deformation is mainly related to time. In addition, polymer plastic also has high specific strength, low strength and other characteristics, the strength of polymer plastic is generally lower, but its density is lower, so the strength becomes higher. Polymer has many characteristics, such as high stability, high wear resistance, expansion, high insulation, so it is widely used in various fields, by many people’s favor
The types of polymer plastics are also diverse. At present, the classification of polymer plastics in China mainly includes seven categories: rubber, polymer coatings, polymer materials, matrix composites, plastics, fibers and plastics.
a.Rubber.
The price of rubber molecular chain is small, flexible, this is from the point of view of the field of physics. Rubber with the size of the external force will change its shape, with instability, if the external force removed, the original state of rubber can be quickly restored.
b.Polymer adhesive.
The adhesive materials of polymer adhesive are mainly natural compounds. In practice, it is usually divided into two kinds: natural, synthetic adhesive. The most widely used is synthetic adhesive.
c.polymer coating.
The main components of polymer coatings are mainly polymers, which are made in a relatively simple way, mainly adding solvents or additives in its production process. Polymer coating is divided into 3 kinds commonly, namely grease, synthetic resin and natural resin, often use in daily life.
d.polymer materials.
The commonly used high molecular weight materials mainly include high molecular enzyme and high molecular transparent materials. Polymer materials have certain functions: energy, material, information conversion, transmission and magnetism.
e.fiber.
Fiber is common in daily life, usually divided into two kinds: natural fiber and chemical fiber. Fiber has the characteristics of small deformation force, small secondary valence force and high modulus in physical concept.
f.Plastics.
Plastic is a kind of material that USES more at present, also be the commonest material. The main components of plastics are usually synthetic resins, natural polymers, and the integration of other additives, such as plasticizers, fillers and so on. Plastic is generally based on synthetic resin, so it can be divided into thermosetting plastic, thermoplastic.
3. Physical properties
In general, if the polymer plastic placed in isothermal conditions, easy to produce the product. In the actual processing, the crystallization temperature is not completely consistent. If the crystallization temperature difference is large, it will affect the crystallization process. At the same time, high stress is often formed in the process of spinning forming, film stretching forming and extrusion forming, which leads to the tendency of accelerating the product. In addition, plastics apply techniques in shear stress. And under the influence of tensile stress, the melt will form longer fibrous crystals. The higher the stress and strain rates are, the more elongated chains and the higher the melting point.
4. Chemical properties
Generally speaking, if the polymer plastics are placed in high stress and high temperature conditions, the molecular structure will have some changes. In this reaction, polymer plastics usually release a large amount of degraded substances, thus releasing more harmful substances. To this end, in the processing should be clear raw material indicators, choose high-quality raw materials. At the same time, a small amount of antioxidant and stabilizer can be added in the formula to improve the anti-degradation performance of the polymer.