Super-tough piezoelectric polylactic acid/polyvinylidene fluoride alloy material and preparation method thereof
A technology of polyvinylidene fluoride and polyvinylidene fluoride resin, applied in the field of super-tough piezoelectric polylactic acid/polyvinylidene fluoride alloy and its preparation, can solve the problem of unexplained polyvinylidene fluoride crystal change and poor mechanical properties etc. to achieve excellent toughness and avoid longitudinal fracture
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Embodiment 1～4
[0060] After drying PLLA resin, polyvinylidene fluoride resin and compatibilizer-1 or compatibilizer-2 in a vacuum oven at 80°C for 24 hours, melt blending was carried out according to the composition ratio in Table 1; the three raw materials were mixed at room temperature After stirring, add in the banbury mixer, the banbury mixer temperature is 190 ℃, and setting screw speed is 50rpm, and after banbury mixing 10 minutes, the discharge is made into a dumbbell-shaped spline (size, length 18 millimeters, width 3 millimeters, thickness 0.5 millimeters) ), these strips were stretched 4 times at room temperature with a stretch rate of 10 mm / min on a universal testing machine, to obtain final product.
[0061] The above mixed samples were hot-pressed into a sheet with a thickness of 0.5mm in a hot press at 200°C, and a standard test sample was prepared with a standard dumbbell-shaped punching knife for performance testing. The results are shown in Table 1.
Embodiment 5
[0072] First mix 0.05g of zinc phenyl phosphate and 50g of PLLA resin, then add 50g of polyvinylidene fluoride resin and 3g of compatibilizer-1, mix and stir at room temperature, then add to the internal mixer, the temperature of the internal mixer is 190 °C, set The fixed screw speed is 50rpm, and after 10 minutes of banburying, the discharge is made into a dumbbell-shaped sample (size, 18 mm long, 3 mm wide, and 0.5 mm thick), and these sample bars are pulled at a speed of 10 mm / min on a universal testing machine. The elongation rate is stretched 4 times at room temperature, that is.
Embodiment 6
[0074] Mix 0.05g of zinc phenylphosphate, 50g of PLLA resin, 50g of polyvinylidene fluoride resin and 3g of compatibilizer-1 at room temperature and then add them to the internal mixer. The temperature of the internal mixer is 190°C, and the screw speed is set at 50rpm. After 10 minutes of banburying, the discharge is made into a dumbbell-shaped sample bar (size, 18 mm long, 3 mm wide, and 0.5 mm thick), and these sample bars are carried out at normal temperature with a stretch rate of 10 mm / min on a universal testing machine. Stretch 4 times, that is.
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