| 聚偏氟乙烯共混体系的压电性及其分子运动——聚偏氟乙烯-聚甲基丙烯酸甲酯共混体系 |
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| 引用本文： | 曾白飞,吴报铢,沈寿彭,吴林生.聚偏氟乙烯共混体系的压电性及其分子运动——聚偏氟乙烯-聚甲基丙烯酸甲酯共混体系[J].高分子学报,1988,0(4):245-250. |
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| 作者姓名： | 曾白飞 吴报铢 沈寿彭 吴林生 |
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| 作者单位： | 中国科学院上海有机化学研究所，中国科学院上海有机化学研究所，中国科学院上海有机化学研究所，中国科学院上海有机化学研究所 上海 福建省泉州华侨大学，上海，上海，上海 |
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| 摘 要： | 本文研究了PVDF-PMMA共混体系的压电性及其分子运动.其松弛转变过程与PVDF-P(VDF-HFE)及PVDF-P(VDF-TFE)共混体系相似,压电性低于PVDF-P(VDF-TFE)共混体系.当PMMA含量为3％时,其压电性与PVDF的接近,而其退极化温度却高于PVDF以及上述二个含氟共混体系的薄膜,随着PMMA的增加,其压电性也随之减弱,这是由于非晶相中偶极子浓度降低之故.
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| 关 键 词： | 压电性 分子运动 共混物 聚偏氟乙烯 聚甲基丙烯酸甲酯 |
| 收稿时间： | 1985-08-12 |
PIEZOELECTRICITY AND MOLECULAR MOTION OF POLY (VINYLIDENE-FLUORIDE) BLENDS I. PVDF-PMMA Blends |
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| ZENG Bai-fei,WU Bao-zhu,SHEN Shou-peng,WU Lin-sheng.PIEZOELECTRICITY AND MOLECULAR MOTION OF POLY (VINYLIDENE-FLUORIDE) BLENDS I. PVDF-PMMA Blends[J].Acta Polymerica Sinica,1988,0(4):245-250. |
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| Authors: | ZENG Bai-fei WU Bao-zhu SHEN Shou-peng WU Lin-sheng |
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| Institution: | Shanghai Institute of Organic Chemistry; Acadcmia Sinica; Shanghai |
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| Abstract: | This paper reports the piezoelectricity and molecular motion of PVDF-PMMA blends. The relaxation spectrum of the blends is very similar to that of PVDF-P (VDF-HFE) and PVDF-P (VDF-TFE), but the piezoelectricity of which are wearker than that of PVDF-P (VDF-TFE). When the content of PMMA in the blend is equal to 3%, its piezoelectricity is nearly the same as PVDF, but the temperature of depolarization is higher than that of PVDF, PVDF (VDF-HFE) and PVDF (VDF-TFE). The piezoelectricity of PVDF-PMMA blends decrease with increase of the content of PMMA in the blends, owing to the lower concentration of the dipoles in the noncrystalline phase. |
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| Keywords: | Piezoelectricity Molecular motion blend PVDF PMMA |
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