When burned, polypropylene plastic smells like rubber and often produces a blue flame. Like PE, PP PLastic Product are not water-repellent, as well as gas and grease when exposed. This is a chemically inert plastic and has a melting point of up to 165 ° C, which is an ideal standard compared to PE.
Chemical stability Due to the flexible H atom at C level 3, it is easy to oxidize and age. PP has no stabilizers
Under diffuse light, the properties remain stable for 2 years. -With direct light, after only a few months will be brittle and destroy immediately. PP has a stabilizer (or use 2% soot) under direct light (ultraviolet light) – after 2 years, the properties are unchanged and stable for 20 years. Resistant to sunlight.
Application of PP :
In life, PP PLastics is used to make food packaging. And especially, these single-layer boxes can be put into the microwave in a short time about 2-3 minutes. With high mechanical and chemical inertness makes PP a safe material, but the color is quite transparent so aesthetics are not high.
Polypropylene plastic is also considered to be safe for health when it is used to make water bottles, bottles and baby toys. Lightweight, safe application, PP is also more expensive than other plastics
