Glass fiber reinforced rigidity-and-toughness-balanced polyester composition and preparation method thereof
A balanced and composite technology, applied in the field of engineering plastics, can solve problems such as poor effects, and achieve the effects of good balance of rigidity and toughness, good appearance of parts, and high strength
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Embodiment 1-9
[0028] (1) Mixing of raw materials
[0029] After drying the polyester in an oven at 80-120°C, weigh the following raw materials according to the weight ratio in Table 1 below: polyester, dimethyl itaconate, glass fiber, antioxidant, lubricant Modifier, coupling agent; finally added to the high mixer, mixed evenly at room temperature;
[0030] (2) Extrusion granulation
[0031] The raw material mixture obtained in step (1) is added into the hopper of the twin-screw extruder, and at the same time, continuous glass fiber is rolled into the glass fiber inlet of the twin-screw extruder, melted and extruded to granulate; the polymer of the present invention is obtained ester composition.
[0032] The extrusion process in the step (2) is as follows: from the feeding port to the machine head, there are ten sections of extrusion temperature respectively 190~230°C, 250~260°C, 250~260°C, 245~255°C, 245~255℃, 240~250℃, 240~250℃, 250~260℃, 250~260℃, 255~265℃, head temperature is 260~27...
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