高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (11): 2572.doi: 10.7503/cjcu20180236
林木松1, 彭磊1(), 付强1, 钱艺华1, 陈天生1, 张晟2, 马晓茜3
收稿日期:
2018-03-28
出版日期:
2018-11-10
发布日期:
2018-10-09
作者简介:
联系人简介: 彭 磊, 男, 博士, 工程师, 主要从事自修复材料及绝缘材料研究. E-mail: 基金资助:
LIN Musong1, PENG Lei1,*(), FU Qiang1, QIAN Yihua1, CHEN Tiansheng1, ZHANG Sheng2, MA Xiaoqian3
Received:
2018-03-28
Online:
2018-11-10
Published:
2018-10-09
Contact:
PENG Lei
E-mail:penglei1025@whu.edu.cn
Supported by:
摘要:
制备了一种能自我修复的电缆绝缘护套材料. 该材料基于主-客体分子间的相互作用, 以β-环糊精(CD)-Al2O3纳米粒子(NPs)为主体, 2-羟基乙基-甲基丙烯酸酯和金刚烷(HEMA-Ad)为客体, 通过主客体相互识别进行组装, 然后将组装体与HEMA、 丙烯酸丁酯(BA)和聚乙烯吡咯烷硐(PVP)进行自由基共聚, 得到一种新型的PVP/p(HEMA-co-BA)自修复材料. 通过红外光谱、 二维红外光谱、 核磁氢谱和碳谱、 动态热机械分析仪、 万能拉伸试验机及超景深三维显微镜等对材料进行表征. 结果表明, 该材料中存在主-客体相互作用和氢键2种超分子作用力; PVP/p(HEMA-co-BA) 材料具有良好的热稳定性(耐热温度可达200 ℃); 20 ℃时材料的储能模量随着交联剂含量的增大而增大(最高可达432 MPa); 材料具有自修复效果(修复效率可达85.2%)且能多次自修复, 自修复效率随着交联剂含量的增加而降低.
中图分类号:
TrendMD:
林木松, 彭磊, 付强, 钱艺华, 陈天生, 张晟, 马晓茜. 基于主客体包合作用的自修复绝缘材料制备及性能. 高等学校化学学报, 2018, 39(11): 2572.
LIN Musong, PENG Lei, FU Qiang, QIAN Yihua, CHEN Tiansheng, ZHANG Sheng, MA Xiaoqian. Research on Self-healing Insulating Material Based on Host-guest Cooperation†. Chem. J. Chinese Universities, 2018, 39(11): 2572.
Sample | V(HEMA)/mL | V(BA)/mL | m(PVP)/g | m(HEMA-Ad)/g | m(CD-Al2O3 NPs)/g | V(EGDMA)/μL |
---|---|---|---|---|---|---|
1 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 0 |
2 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 0.5 |
3 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 1 |
4 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 2 |
Ref.[1] | 0.5 | 2.37 | 0.66 | 0.6 | 0 | 1 |
Ref.[2] | 0.5 | 2.37 | 0 | 0.6 | 0.3 | 1 |
Table 1 Composition of samples for synthesis of PVP/p(CHEMA-co-BA)
Sample | V(HEMA)/mL | V(BA)/mL | m(PVP)/g | m(HEMA-Ad)/g | m(CD-Al2O3 NPs)/g | V(EGDMA)/μL |
---|---|---|---|---|---|---|
1 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 0 |
2 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 0.5 |
3 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 1 |
4 | 0.5 | 2.37 | 0.66 | 0.6 | 0.3 | 2 |
Ref.[1] | 0.5 | 2.37 | 0.66 | 0.6 | 0 | 1 |
Ref.[2] | 0.5 | 2.37 | 0 | 0.6 | 0.3 | 1 |
Sample | Storage modulus/MPa | Tg/℃ | ||||
---|---|---|---|---|---|---|
20 ℃ | 50 ℃ | 90 ℃ | E'20 ℃/E'50 ℃ | E'50 ℃/E'90 ℃ | ||
2 | 300.8 | 48.83 | 1.127 | 6.16 | 43.32 | 78.1 |
3 | 399.0 | 79.13 | 2.313 | 5.04 | 34.21 | 81.3 |
4 | 432.3 | 64.78 | 1.030 | 6.67 | 62.08 | 95.8 |
Table 2 Dynamic thermo-mechanical analysis of PVP/p(HEMA-co-BA)
Sample | Storage modulus/MPa | Tg/℃ | ||||
---|---|---|---|---|---|---|
20 ℃ | 50 ℃ | 90 ℃ | E'20 ℃/E'50 ℃ | E'50 ℃/E'90 ℃ | ||
2 | 300.8 | 48.83 | 1.127 | 6.16 | 43.32 | 78.1 |
3 | 399.0 | 79.13 | 2.313 | 5.04 | 34.21 | 81.3 |
4 | 432.3 | 64.78 | 1.030 | 6.67 | 62.08 | 95.8 |
Condition | Volume resistivity/ (Ω·m) | Surface resistivity/Ω | Relative permittivity | AC electrical strength (inoil)/(MV·m-1) | DC electrical strength (in oil)/(MV·m-1) |
---|---|---|---|---|---|
Normal | 3.2×107 | 7.2×1010[ | 21.7 | 12.5[ | 14.7[ |
Drying for 2h at 50 ℃, vacuum | 4.1×108 | 3.5×1010[ | 18.7 |
Table 3 Insulating properties of PVP/p(HEMA-co-BA)
Condition | Volume resistivity/ (Ω·m) | Surface resistivity/Ω | Relative permittivity | AC electrical strength (inoil)/(MV·m-1) | DC electrical strength (in oil)/(MV·m-1) |
---|---|---|---|---|---|
Normal | 3.2×107 | 7.2×1010[ | 21.7 | 12.5[ | 14.7[ |
Drying for 2h at 50 ℃, vacuum | 4.1×108 | 3.5×1010[ | 18.7 |
Sample | EY/MPa | ε/(%) | σ/MPa | Self-healing efficiency, η(%) | ||
---|---|---|---|---|---|---|
Before self-healing | After self-healing | Before self-healing | After self-healing | |||
1 | 0.36 | 337.65 | 225.33 | 0.612 | 0.519 | 85.2 |
2 | 7.64 | 173.33 | 24.76 | 0.812 | 0.586 | 72.2 |
3 | 9.42 | 161.39 | 70.66 | 1.452 | 0.987 | 67.98 |
4 | 15.00 | 98.41 | 29.11 | 2.036 | 1.341 | 65.89 |
Ref.[1] | 9.14 | 158.35 | 0 | 1.431 | 0 | 0 |
Ref.[2] | 8.53 | 150.23 | 40.37 | 1.128 | 0.413 | 36.61 |
Table 4 Mechanical properties and self-healing efficiency of PVP/p(HEMA-co-BA)
Sample | EY/MPa | ε/(%) | σ/MPa | Self-healing efficiency, η(%) | ||
---|---|---|---|---|---|---|
Before self-healing | After self-healing | Before self-healing | After self-healing | |||
1 | 0.36 | 337.65 | 225.33 | 0.612 | 0.519 | 85.2 |
2 | 7.64 | 173.33 | 24.76 | 0.812 | 0.586 | 72.2 |
3 | 9.42 | 161.39 | 70.66 | 1.452 | 0.987 | 67.98 |
4 | 15.00 | 98.41 | 29.11 | 2.036 | 1.341 | 65.89 |
Ref.[1] | 9.14 | 158.35 | 0 | 1.431 | 0 | 0 |
Ref.[2] | 8.53 | 150.23 | 40.37 | 1.128 | 0.413 | 36.61 |
Fig.11 Samples without CD-Al2O3 NPs(A), without PVP(B) and self-healing test of PVP/p(HEMA-co-BA) after smearing cyclodextrin solution at cutting surface(C)
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