2013-07-24 by seoer8
The main requirements of the Plastic chemical
① Efficient: applications in plastic additive
and can effectively play its proper function. Selection should be based on the additive mixing with the comprehensive performance requirements.
② Compatibility: synthetic resin with better compatibility.
③ Persistence: in the plastic processing and application process is not volatile, non-bleeding and non-migratory and non-leaching.
④ Chemical stability: in plastics processing and the application process is not biodegradable, synthetic resins and other components with chemical reactions.
⑤ Non-toxic: no toxic effects on the human body.
⑥ low prices. Add a way to add an additive depends on: the physical form of synthetic resin and melt characteristics; additives physical form and concentration; additive compounds, the dispersion and solubility; compounds, the ultimate physical condition. Add o'clock
High-speed mixing, such mixing and extrusion processes. The effect additives may be added, in addition to depending on their mechanism of action, but also depends on the correct order of addition.
Plastic additives according to their specific functions can be divided into seven categories:
① to improve processing performance additives such as heat stabilizers, lubricants and the like.
② improve machining performance additives, such as plasticizers, toughening agents, etc.
③ additives improve the surface properties, such as an antistatic agent, a coupling agent.
④ improve optical performance additives such as coloring agents. ⑤ improve the aging properties of additives such as antioxidants, light stabilizers.
⑥ reduce the cost of plastic additives, such as extenders, fillers and the like.
⑦ impart other specific effects of additives such as blowing agents, flame retardants, fungicides and so on.
Additive is dispersed in the molecular structure of the plastic, the plastic will not seriously affect the molecular structure, and can improve the properties or reduce the cost of chemicals. Additive to be added, can promote improved plastic substrate processing, physical, chemical and other functions and increasing
Substrate physical and chemical properties.