Spray-free PC/ABS composite material with high gloss and high impact resistance and preparation method of spray-free PC/ABS composite material

[0032] Comparative Example 1 and Examples 1-6:

[0033] The dried PC-1, ABS-1, SMI, MBS, non-spraying high-gloss masterbatch and antioxidant are mixed uniformly according to the composition ratio in Table 1, and then passed through a twin-screw extruder (screw diameter 35mm, length to diameter ratio L / D=36) In the main barrel, the main barrel has nine sections to control the temperature (from the feeding port to the machine head outlet) as 200℃, 230℃, 255℃, 255℃, 255℃, 255℃, 255℃, 255℃, 240℃ , The twin-screw speed is 300 rpm, and the extruded material is cooled in a water tank and then pelletized to obtain the product. The above products were dried in a blast oven at 95°C for 5 hours, and then injected into a standard sample and a standard light plate (150*100*3.2mm) by a plastic injection molding machine, and the injection temperature was 250°C. The molded sample and light plate are immediately placed in a glass desiccator and placed at room temperature for at least 24 hours fo

[0038] Comparative Examples 2-4 and Examples 7-12. According to the processing technology of Examples 1-6, PCs with different molecular weights and ABS with different preparation methods were used respectively, and the above-mentioned experiments were used to optimize the toughness and gloss without spraying. For the content of high-gloss color masterbatch, a PC / ABS resin mixture was prepared according to the composition and ratio in Table 2. The performance test and gloss are shown in Table 2.

[0039] Table 2 Composition and performance of PC / ABS composition

[0040]

[0041]

[0042] From the performance test results of the above comparative examples and examples, it can be seen that the use of different molecular weight PCs (PC-1,2,3) and ABS with different synthesis methods can produce spray-free, high-gloss, high-impact PC / ABS composites Materials, using different molecular weight PCs and different synthesis methods of ABS can produce spray-free, high-gloss, high-impact PC