Thermoplastic polyester resin composition and molded article
A technology of thermoplastic polyester and resin composition, applied in the field of thermoplastic polyester resin composition, can solve the problems of insufficient resistance to oxidative deterioration and insufficient mechanical properties, and achieve the effects of excellent melt retention stability and excellent oxidative deterioration resistance
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Embodiment 1～8、 comparative example 1～6、10
[0147] Using a screw diameter of 30mm, a ratio of 20% of the kneading area, a twin-screw extruder (manufactured by Nippon Steel Works, TEX-30α) with a vent in the same direction of L / D35, (A-1) was polymerized Butylene phthalate resin, (B) metal halide, and (C) antioxidant were mixed with the compositions shown in Table 1 and Table 2, and added from the main feed section of the twin-screw extruder. Further, melt mixing was carried out under extrusion conditions of a kneading temperature of 250° C. and a screw rotation speed of 150 rpm, and the obtained resin composition was discharged in strands, passed through a cooling bath, and pelletized by a strand pelletizer.
[0148] The obtained pellets were dried in a hot air dryer at a temperature of 110° C. for 12 hours, and then evaluated by the methods described in the above items 1. to 7. Tables 1 and 2 show the results.
Embodiment 9
[0150] Pellets were obtained in the same manner as in Example 2, except that the ratio of the kneading zone was set to 0%, that is, all full range screws. The obtained pellets were dried in a hot air dryer at a temperature of 110° C. for 12 hours, and evaluated by the methods described in the above items 1. to 7. Table 1 shows the results.
Embodiment 10～12
[0152] In the composition shown in Table 1, (A-1) polybutylene terephthalate resin and metal halide (B) were used, and the ratio of the kneading region was set to 55%, except that it was the same as Example 2 Particles were obtained by manipulating. The obtained pellets were dried in a hot air dryer at a temperature of 110° C. for 12 hours, and evaluated by the methods described in the above items 1. to 7. Table 1 shows the results.
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Abstract
Description
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