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Composition of sheet

Categories: Latest NewsStars: 3Stars Visit: - Release time: 2015-08-02 14:02:00
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Synthetic resin

Synthetic resin is the most important component of plastics, its content in plastics is generally from 40% to 100%. Because of the high content, and the nature of the resin often determines the nature of the plastic, so people often regard the resin as a synonym for plastic. For example, the PVC resin and PVC plastic, phenolic resin and phenolic resin. In fact, resin and plastic are two different concepts. The resin is a kind of raw material which is not processed. It is not only used in the manufacture of plastics, but also the raw materials for coatings, adhesives and synthetic fibers. And plastic in addition to a very small part of the resin, the vast majority of plastic, in addition to the main components of the resin, but also need to add other substances.


Packing also called filler, it can improve the plastic strength and heat resistance, and reduce the cost. For example, after the addition of wood powder in phenolic resin can greatly reduce the cost, so that the phenolic plastics become one of the most cheap plastic, but also significantly improve the mechanical strength. Packing can be divided into two types of organic and inorganic filler filler, the former such as wood flour, rags, paper and all kinds of woven fabric and so on, the latter such as glass fiber, diatomite, asbestos, such as carbon black.

Plastic plasticizer

Plasticizer can increase the plasticity and flexibility of plastic, reduce the brittleness, make plastic easy to process. Plasticizer is generally able to mix with the resin, non-toxic, non - odor, light, heat and stability of high boiling point of organic compounds, the most commonly used is the next two benzoic acid esters. For example, if the production of PVC plastic, if the addition of more plasticizer can be obtained from the soft PVC plastic, if you do not add or add plasticizer (<10%), then get rigid PVC plastic.


In order to prevent the synthesis of resin in the process of processing and use of the role of light and heat of the decomposition and destruction, to extend the service life, to add stabilizer in plastic. Commonly used to have a stearic acid salt, epoxy resin, etc..


The colorant can make the plastic with various colors, bright and beautiful. The commonly used organic dyes and inorganic pigment as colouring agent.


The role of lubricant is to prevent the plastic in the shape of the metal mold, and can make the plastic surface smooth and beautiful. The commonly used lubricants are stearic acid and calcium magnesium salt.

In addition to the above additives, plastic can also be added to the flame retardant, foaming agent, antistatic agent, etc., to meet the different requirements of the use of.
Keywords in the article: color masterbatch