| 摘要 |
PROBLEM TO BE SOLVED: To obtain a noncrystalline polyamide molded product having excellent heat resistance for a long period of time by irradiating a molded product comprising an uncrosslinked noncrystalline polyamide and a crosslinking agent with radiation. SOLUTION: This molded product is obtained by irradiating, with radiation, a molded product comprising (A) an uncrosslinked noncrystalline polyamide, (B) a crosslinking agent (e.g. triallyl isocyanurate) and, as necessary, (C) e.g. glass fiber, other inorganic fiber, an inorganic powder, a coloring agent, an antioxidant and a plasticizer. Preferably, the component A has a heat of crystal fusion [differential scanning calorimeter(DSC)] of <1 cal/g. Preferably, the component B is compounded at about 1-5 pt(s) wt. per 100 pts.wt. of the component A. The radiation includes electron beams andγ-rays each capable of producing a free radical from the component A. The irradiation dose is preferably 25-300 kGy, more preferably, 50-200 kGy, furthermore preferably, 100-200 kGy. |
