What is the aging of the polymer?
The reason is that the fundamental is the role of external factors, the polymer chemical bond cracking and the phenomenon of aging
Aging is characterized by the polymer brittle, discoloration (white generally yellow), sticky, while the mechanical strength will be a certain decline.
In general, the aging of the polymer is inevitable, whether it is heat, light (generally refers to UV) or chemical and other chemical factors, as well as physical, such as bending will cause the aging of the polymer,
