Thermoplastic resin composition and molded product using same
A thermoplastic resin and composition technology, applied in the field of thermoplastic resin composition and molded products using it, can solve the problems of environmental pollution, work complexity, productivity decline, etc., and achieve the effect of excellent scratch resistance
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[0039] Vinyl-based copolymers can be prepared in the process of preparing a core-shell structured copolymer to be described later, and specifically, when an excess of a copolymer of an aromatic vinyl compound and a vinyl cyanide compound is grafted to a small amount of Vinyl-based copolymers can be produced when rubbery polymers are used or when excess chain transfer agents are used as molecular weight control agents.
[0040] The aromatic vinyl compound may be styrene, C1 to C10 alkyl substituted styrene, halogen substituted styrene, vinyl toluene, vinyl naphthalene, or combinations thereof. Alkyl substituted styrenes may include alpha-methylstyrene, o-methylstyrene, p-ethylstyrene, m-ethylstyrene, o-ethylstyrene, o-tert-butylstyrene, 2,4- Dimethyl styrene, etc.
[0041] The vinyl cyanide compound may be acrylonitrile, methacrylonitrile, ethacrylonitrile, or combinations thereof.
[0042] Examples of vinyl-based copolymers may include copolymers of styrene and acrylonitrile...
Embodiment 1~10
[0088] Embodiment 1~10 and comparative example 1~4
[0089] According to the compositions illustrated in Table 1 and Table 2, thermoplastic resin compositions according to Examples 1 to 10 and Comparative Examples 1 to 4 were prepared using the components described in Table 1 below.
[0090]As for the manufacturing method, the components were mixed in the composition shown in Table 1 and Table 2 below, and extruded into pellets by a conventional twin-screw extruder at a temperature of 210~230°C.
experiment example
[0092] The manufactured pellets were dried at 80°C for 4 hours, and then prepared by injection molding the pellets into ASTM dumbbell-shaped samples by setting a barrel temperature of 240°C, a molding temperature of 60°C, and a molding cycle of 40 seconds, using an injection molding machine capable of 6 oz injection Physical property samples. The physical properties of the prepared physical property samples were measured by the following methods, and the measurement results are shown in Table 1 and Table 2 below.
[0093] (1) Content analysis of methyl (meth)acrylate: The amount of methyl (meth)acrylate was measured by 1H-NMR spectrum. A calibration curve was obtained using a sample whose precise input amount was known, and then the amount of methyl methacrylate in the prepared physical property sample was measured with 500 MHz H-NMR of Bruker Company.
[0094] (2) IZOD impact strength: IZOD impact strength (sample thickness 1 / 8") was measured according to ASTM D256.
[0095...
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