| 摘要 |
PURPOSE:To produce the title molding of excellent heat resistance without detriment to mechanical properties, by heat-treating a thermoplastic resin molding in a vacuum or in the presence of an inert gas. CONSTITUTION:A thermoplastic resin molding made of, e.g., a polyamide, polyester or polyacetal is heat-treated at a temperature >=120 deg.C for at least 30min in a vacuum >=60mmHg or in an inert gas atmosphere such as CO2 gas, He or Ar.
|
