Pellets and thermoplastic resin compositions
A thermoplastic resin and composition technology, applied in the field of carbon masterbatch pellets, can solve the problems of easy scattering, polluting the working environment, adverse effects on the human body, etc., and achieve the effects of excellent dispersibility and stable black coloring concentration
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[0149] Hereinafter, the present embodiment will be more specifically described by way of examples and comparative examples, but the present embodiment is not limited to these examples.
[0150] The measurement methods and raw materials for the physical properties used in Examples and Comparative Examples are as follows.
[0151] [Measurement method of physical properties]
[0152]
[0153] Ten carbon black masterbatch pellets were arbitrarily selected, and the diameter in the direction perpendicular to the axial direction and the length in the axial direction of each pellet were measured. The obtained measured values were arithmetically averaged to obtain the pellet diameter (D) and pellet length (L).
[0154] The diameter in the direction perpendicular to the axial direction of each pellet is obtained as follows: For the plane perpendicular to the axial direction of the pellet, the pellet is projected from the axial direction, and the obtained projection diagram is measu...
manufacture example 1
[0191] [Manufacturing example 1 (CBMB1)]
[0192] 40.0% by mass of carbon black, 55.0% by mass of GPPS, and 5.0% by mass of fatty acid amide were mixed with a Henschel mixer for 3 minutes, and a small pressurized kneader D3-20 manufactured by Moriyama was used at a set temperature of 200° C. at 60 rpm The rotation speed was carried out for 20 minutes of melt kneading.
[0193] The molten kneaded product was taken out, and immediately extruded through a 3 mm diameter die head using Feeder Ruder FR manufactured by Moriyama Co., Ltd., and adjusted by extrusion output and cutting speed to obtain pellets with a diameter (D) of 3.5 mm. A flat pellet-shaped carbon black masterbatch having a pellet length (L) of 1.5 mm.
[0194] Table 1 shows the composition and measurement results.
manufacture example 2～7
[0195] [Manufacturing examples 2 to 7 (CBMB2 to CBMB7)]
[0196] Carbon black masterbatch pellets were produced in the same manner as in Production Example 1, except that the carbon black, GPPS, and fatty acid amide used in Production Example 1 were made into the compounding ratio shown in Table 1 and the shape of the masterbatch pellets. material.
[0197] In the production of CBMB2 to CBMB5, flattened carbon black masterbatch pellets having different pellet lengths (L) from those in Production Example 1 were obtained by adjusting the extrusion discharge rate and cutting speed.
[0198] In CBMB5-CBMB7, the compounding quantity of carbon black, GPPS, and fatty acid amide was changed by the compounding ratio shown in Table 1.
[0199] Table 1 shows the composition and measurement results.
[0200] [Table 1]
[0201]
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