High-content glass fiber reinforced material with low mold scale and excellent surface quality and preparation method thereof
A technology with high glass fiber content and surface quality, applied in the field of resin and its preparation, can solve the problems that PBT materials cannot provide low-fouling solutions, and achieve the effect of excellent surface, good mechanical properties and broad application prospects
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Embodiment 1
[0032] The low mold fouling and high-content glass fiber reinforced material with excellent surface quality in this example, the components contained and the parts by weight of each component are shown in Table 1, and the preparation method is as follows:
[0033] (1) Take each raw material according to the parts by weight shown in Table 1;
[0034] (2) Dry the PBT resin at 120-140°C for 5 hours;
[0035] (3) PBT resin, nucleating agent, toughening agent Elvaloy PTW, antioxidant and processing aid are mixed evenly and placed in a twin-screw extruder, and glass fiber compound is added downstream of the extruder, and finally passed Screw conveying, shearing and kneading, material melting and compounding, and then extrusion, drawing, low-temperature cooling and pelletizing to obtain products.
[0036] The feeding speed of the twin-screw extruder is controlled at 350-450rpm, the temperature of each partition is kept at 200-245°C, the screw speed is 350-450rpm, and the vacuum pump...
Embodiment 2
[0038] The low mold fouling and high-content glass fiber reinforced material with excellent surface quality in this embodiment, the components contained and the parts by weight of each component are shown in Table 1, and the preparation method is as follows:
[0039] (1) Take each raw material according to the parts by weight shown in Table 1;
[0040] (2) Dry the PBT resin at 120-140°C for 5 hours;
[0041] (3) PBT resin, toughening agent, antioxidant, nucleating agent and processing aid are mixed evenly and placed in the twin-screw extruder, and the glass fiber compound is added downstream of the extruder, and finally passed through the screw Conveying, shearing and mixing, melting and compounding of materials, and then extruding, drawing, cooling at low temperature and pelletizing to obtain products.
[0042]The feeding speed of the twin-screw extruder is controlled at 350-450rpm, the temperature of each partition is maintained at 200-245°C, the screw speed is 350-450rpm, ...
Embodiment 3
[0044] The low mold fouling and high-content glass fiber reinforced material with excellent surface quality in this example, the components contained and the parts by weight of each component are shown in Table 1, and the preparation method is as follows:
[0045] (1) Take each raw material according to the parts by weight shown in Table 1;
[0046] (2) Dry the PBT resin at 120-140°C for 5 hours;
[0047] (3) PBT resin, toughening agent, antioxidant and auxiliary agent are mixed uniformly and placed in a twin-screw extruder, and alkali-free glass fiber HP3786 is added downstream of the extruder, and finally conveyed, sheared and Kneading, melting and compounding of materials, and then extruding, drawing, cooling at low temperature, and pelletizing to obtain products.
[0048] The feeding speed of the twin-screw extruder is controlled at 350-450rpm, the temperature of each partition is maintained at 200-245°C, the screw speed is 350-450rpm, and the vacuum pump on the twin-scre...
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Abstract
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