Transparent anti-static polyvinylidene fluoride piezoelectric material and preparation method thereof
A polyvinylidene fluoride piezoelectric and polyvinylidene fluoride technology, applied in the field of polyvinylidene fluoride piezoelectric materials and its preparation, can solve the problem of inability to coordinate antistatic properties and piezoelectric properties optimally, and the limited content of PVDF polar crystals , Restricting the setting of beautiful materials, etc., to achieve excellent transparency, excellent stability, and promote the formation of polar crystals
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Embodiment 1
[0047] Step (1). Dry polyvinylidene fluoride and 1-butyl-3-methylimidazolium hexafluorophosphate at 80°C for 24 hours in vacuum respectively;
[0048] Step (2). Add 100g of dried polyvinylidene fluoride and 0.5g of 1-butyl-3-methylimidazolium hexafluorophosphate into the internal mixer at 190°C for melt mixing. Rotor speed is 20rpm, melt kneading 1min, then raise rotor speed to 50rpm, melt kneading 5min, obtain mixture;
[0049]Step (3). The mixture is discharged from the melting and kneading equipment, cooled to room temperature and crystallized to obtain a polyvinylidene fluoride piezoelectric material.
[0050] The mass ratio of polyvinylidene fluoride to 1-butyl-3-methylimidazolium hexafluorophosphate in the polyvinylidene fluoride piezoelectric material prepared in Example 1 was 100:0.5.
Embodiment 2
[0052] Step (1). Dry polyvinylidene fluoride and 1-butyl-3-methylimidazolium hexafluorophosphate at 80°C for 24 hours in vacuum respectively;
[0053] Step (2). Add 100g of dried polyvinylidene fluoride and 1.0g of 1-butyl-3-methylimidazolium hexafluorophosphate into the internal mixer at 190°C for melt mixing. Rotor speed is 20rpm, melt kneading 1min, then raise rotor speed to 50rpm, melt kneading 5min, obtain mixture;
[0054] Step (3). The mixture is discharged from the melting and kneading equipment, cooled to room temperature and crystallized to obtain a polyvinylidene fluoride piezoelectric material.
[0055] The mass ratio of polyvinylidene fluoride to 1-butyl-3-methylimidazolium hexafluorophosphate in the polyvinylidene fluoride piezoelectric material prepared in Example 2 was 100:1.
Embodiment 3
[0057] Step (1). Dry polyvinylidene fluoride and 1-butyl-3-methylimidazolium hexafluorophosphate at 80°C for 24 hours in vacuum respectively;
[0058] Step (2). Add 100g of dried polyvinylidene fluoride and 2.0g of 1-butyl-3-methylimidazolium hexafluorophosphate to the internal mixer for melting and mixing at 190°C. When premixing, the rotor of the internal mixer Speed is 20rpm, melt kneading 1min, then the rotor speed is increased to 50rpm, melt kneading 5min, to obtain the mixture;
[0059] Step (3). The mixture is discharged from the melting and kneading equipment, cooled to room temperature and crystallized to obtain a polyvinylidene fluoride piezoelectric material.
[0060] The mass ratio of polyvinylidene fluoride to 1-butyl-3-methylimidazolium hexafluorophosphate in the polyvinylidene fluoride piezoelectric material prepared in Example 3 was 100:2.
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