Thermoplastic resin composition having excellent reflectivity
A thermoplastic resin and composition technology, applied in the field of polyester thermoplastic resin composition and molded products formed therefrom, can solve the problems of insufficient mechanical properties, poor moldability and molding stability, low crystallization rate, etc.
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Embodiment 1
[0108] As listed in Table 1, 100 parts by weight of base resin containing 75 wt% of (A) polyester resin and 25 wt% of (B) white pigment, 3 parts by weight of (C1) core-shell structure impact modified A curing agent, and 0.2 parts by weight of (D) modified polyolefin resin were dry blended to prepare a thermoplastic resin composition. Subsequently, the thermoplastic resin composition was extruded at a nozzle temperature of 250° C. to 350° C. using a twin-screw extruder (φ=45 mm) to prepare pellets. The prepared pellets were dried at 100° C. for 4 hours or more, and then subjected to injection molding to prepare samples. The prepared samples were evaluated for reflectance, reflectance difference, and flexural strength by the following methods. The results are shown in Table 2.
Embodiment 2
[0110] As listed in Table 1, 100 parts by weight of base resin, 3 parts by weight of ( C1) A core-shell structure impact modifier, and 0.2 parts by weight of (D) modified polyolefin resin were dry blended to prepare a thermoplastic resin composition. Subsequently, the thermoplastic resin composition was extruded at a nozzle temperature of 250° C. to 350° C. using a twin-screw extruder (φ=45 mm) to prepare pellets. The prepared pellets were dried at 100° C. for 4 hours or more, and then subjected to injection molding to prepare samples. The prepared samples were evaluated for reflectance, reflectance difference, and flexural strength by the following methods. The results are shown in Table 2.
Embodiment 3
[0112] As listed in Table 1, 100 parts by weight of base resin, 3 parts by weight of ( C1) A core-shell structure impact modifier, and 0.5 parts by weight of (D) modified polyolefin resin are dry blended to prepare a thermoplastic resin composition. Subsequently, the thermoplastic resin composition was extruded at a nozzle temperature of 250° C. to 350° C. using a twin-screw extruder (φ=45 mm) to prepare pellets. The prepared pellets were dried at 100° C. for 4 hours or more, and then subjected to injection molding to prepare samples. The prepared samples were evaluated for reflectance, reflectance difference, and flexural strength by the following methods. The results are shown in Table 2.
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