| 초록 |
Polyamide (PA) 12 has a structure composed of 12 hydrocarbons among amide groups, which is longer than other PA resins. Due to such structural characteristics, polyamide system has excellent mechanical properties, heat resistance, abrasion resistance, excellent water resistance and dimensional stability of polyolefin system, and is widely used as a material for gas / oil pipes. However, it has the lowest mechanical properties among polyamide series. In order to improve the mechanical properties of the PA12 resin, mechanical properties were measured after annealing at various temperature / time conditions, and furthermore, the correlation between the mechanical properties and crystallinity was investigated in order to know the cause of the increase of the mechanical properties. |
