MECHANICAL BUD TRIMMER PC
This was caused by the large difference in refractive index between PC and PM-02 however, in Examples 4 to 5, the self-made PM-01 was used, which not only It greatly improves the weather resistance of the material without affecting the impact performance of the material in addition, the surface of the material does not form a pearl effect. From the comparative examples and Examples 1 to 3, it can be found that with the addition of PM-02, the weather resistance of PC/ABS alloy is greatly improved, but the impact performance is indeed greatly reduced in addition, when the addition of PM-02 is increased to 10KG Later, the surface of the material showed a pearlescent effect, which greatly affected the appearance of the material. Spline size (mm): 80×10×4 the gap type is Type A, and the remaining width at the bottom of the gap is 8.0☐.2mm.
MECHANICAL BUD TRIMMER ISO
The external notch impact strength is tested in accordance with ISO 179.
The weather resistance of the material is tested in accordance with SAE J1885, and ΔE in Table 2 means that it has passed 300KJ/M 2 Data after energy irradiation Appearance observation Use a large color palette to observe the pearlescent effect on the surface of the material, which is divided into 5 levels, from 5 to 1, and the appearance effect is from good to poor. Compared with the prior art, the alloy having excellent weather resistance contains the weatherproof agent capable of enabling a polycarbonate (PC)/ ABS alloy to have excellent weather resistance and a good surface, mainly retains all material mechanical properties, and is specially suitable for automobile interior and exterior trimming parts such as instrument panels, rearview mirrors and luggage supports having high requirements on weather resistance.
The preparation method of the alloy having excellent weather resistance comprises the following steps of putting the raw materials into a medium speed mixer, putting the mixture obtained by the previous step into a double-screw extruder, carrying out melt extrusion at a screw rotating speed controlled in a range of 180 to 600rpm, and carrying out granulation to obtain desired products. The alloy having excellent weather resistance is prepared from 50 to 70 parts by weight of polycarbonate, 30 to 40 parts by weight of acrylonitrile butadiene styrene (ABS), 5 to 20 parts by weight of a weather-resistant modifier, 0.1 to 1 part by weight of an anti-oxidant and 0.1 to 1 part by weight of a weatherproof agent. The invention relates to an alloy having excellent weather resistance and a preparation method thereof.
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