Glass fiber reinforced PBT (Poly Butylenes Terephthalate) combination special for large thin-wall part and preparation method thereof
A composition and glass fiber technology, applied in the field of glass fiber reinforced PBT composition and its preparation, can solve problems such as affecting the appearance of products, rough surface, dullness, etc., achieve high surface finish, low molding shrinkage, and eliminate warpage Effect
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[0030] The grade of PBT is Nantong Xingchen 1100A, which is ordinary grade and has a viscosity of 1.05 dl / g.
[0031] Table 1: Raw material ratio (weight percent %)
[0032] raw material name
[0033] Compatibilizer
[0034] First, put the above-mentioned components except glass fiber into the high-mixer according to the ratio in Table 1 and mix them for 5 minutes, then discharge; then, add the above-mentioned mixed raw materials into the twin-screw extruder for processing, and the glass The side feeding port is forced to feed, the screw rotation speed is 180-600 rpm, and the processing temperature is 220-240 ° C. After melt extrusion, granulation and packaging, the glass fiber reinforced PBT composition is obtained.
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