J. Mater. Sci. Technol. ›› 2017, Vol. 33 ›› Issue (11): 1424-1432.DOI: 10.1016/j.jmst.2017.05.014
• Orginal Article • Previous Articles
Lei Wanqinga, Fang Changqingabc*(), Zhou Xingab, Li Jiabinb, Yang Rongb, Zhang Zisenb, Liu Donghongc**()
Received:
2017-03-17
Revised:
2017-03-31
Accepted:
2017-04-10
Online:
2017-11-20
Published:
2018-01-25
Contact:
Fang Changqing,Liu Donghong
About author:
1 These two authors contributed equally to this paper.
Lei Wanqing, Fang Changqing, Zhou Xing, Li Jiabin, Yang Rong, Zhang Zisen, Liu Donghong. Thermal properties of polyurethane elastomer with different flexible molecular chain based on para-phenylene diisocyanate[J]. J. Mater. Sci. Technol., 2017, 33(11): 1424-1432.
Sample | PTMG (g) | PPDI (g) | 1,4-BDO (g) | BPA (g) | Mole ratios of 1,4-BDO/BPA | Content of hard segments (%) |
---|---|---|---|---|---|---|
PUE1 | 30 | 7.2 | 2.70 | - | 10/0 | 24.10 |
PUE2 | 30 | 7.2 | 2.43 | 0.68 | 9/1 | 25.48 |
PUE3 | 30 | 7.2 | 2.16 | 1.37 | 8/2 | 26.21 |
PUE4 | 30 | 7.2 | 1.89 | 2.05 | 7/3 | 26.97 |
PUE5 | 30 | 7.2 | 1.62 | 2.74 | 6/4 | 27.89 |
PUE6 | 30 | 7.2 | 1.35 | 3.42 | 5/5 | 28.49 |
PUE7 | 30 | 7.2 | - | 6.84 | 0/10 | 31.07 |
Table 1 Formula of polyurethane elastomer.
Sample | PTMG (g) | PPDI (g) | 1,4-BDO (g) | BPA (g) | Mole ratios of 1,4-BDO/BPA | Content of hard segments (%) |
---|---|---|---|---|---|---|
PUE1 | 30 | 7.2 | 2.70 | - | 10/0 | 24.10 |
PUE2 | 30 | 7.2 | 2.43 | 0.68 | 9/1 | 25.48 |
PUE3 | 30 | 7.2 | 2.16 | 1.37 | 8/2 | 26.21 |
PUE4 | 30 | 7.2 | 1.89 | 2.05 | 7/3 | 26.97 |
PUE5 | 30 | 7.2 | 1.62 | 2.74 | 6/4 | 27.89 |
PUE6 | 30 | 7.2 | 1.35 | 3.42 | 5/5 | 28.49 |
PUE7 | 30 | 7.2 | - | 6.84 | 0/10 | 31.07 |
Fig. 2. DSC thermograms of polyurethane elastomers extended with pure 1,4-BDO (PUE1), BPA (PUE7) and 1,4-BDO/BPA blends with different mole ratios of 9/1, 8/2, 7/3, 6/4, 5/5 (PUE2, PUE3, PUE4, PUE5, PUE6).
Sample | Tga (°C) | Tmb (-60 to 35 °C) | Tg’ c (°C) | Tm’ d (°C) | |
---|---|---|---|---|---|
PUE1 | -67.5 | -31.1 | 54.0 | - | |
PUE2 | -65.0 | -31.1 | 42.7 | - | |
PUE3 | -64.4 | -31.1 | 65.3 | - | |
PUE4 | -61.7 | -60.0 | -17.7 | 65.3 | - |
PUE5 | -61.4 | -60.0 | -17.7 | 47.7 | 187.8 |
PUE6 | -61.1 | -60.0 | -17.7 | 40.7 | 188.5 |
PUE7 | -44.6 | - | 43.7 | 184.7 |
Table 2 Data of DSC measure of all PUE samples.
Sample | Tga (°C) | Tmb (-60 to 35 °C) | Tg’ c (°C) | Tm’ d (°C) | |
---|---|---|---|---|---|
PUE1 | -67.5 | -31.1 | 54.0 | - | |
PUE2 | -65.0 | -31.1 | 42.7 | - | |
PUE3 | -64.4 | -31.1 | 65.3 | - | |
PUE4 | -61.7 | -60.0 | -17.7 | 65.3 | - |
PUE5 | -61.4 | -60.0 | -17.7 | 47.7 | 187.8 |
PUE6 | -61.1 | -60.0 | -17.7 | 40.7 | 188.5 |
PUE7 | -44.6 | - | 43.7 | 184.7 |
Fig. 3. (a) TG curves of polyurethane elastomers extended with pure 1,4-BDO (PUE1), BPA (PUE7) and 1,4-BDO/BPA blends with different mole ratios of 9/1, 8/2, 7/3, 6/4, 5/5 (PUE2, PUE3, PUE4, PUE5, PUE6); (b) TG and DTG curves of PUE1.
Sample | Tonsete (°C) | T10f (°C) | Tmaxg (°C) | T50h (°C) | Tresiduesi (°C) | Mass of residues (%) |
---|---|---|---|---|---|---|
PUE1 | 305 | 318 | 365 | 390 | 460 | 11.52 |
PUE2 | 295 | 315 | 341 | 387 | 458 | 0.30 |
PUE3 | 290 | 305 | 361 | 393 | 456 | 1.52 |
PUE4 | 273 | 295 | 358 | 393 | 458 | 1.52 |
PUE5 | 278 | 299 | 358 | 375 | 446 | 1.92 |
PUE6 | 275 | 298 | 358 | 395 | 458 | 2.32 |
PUE7 | 267 | 285 | 329 | 390 | 453 | 1.11 |
Table 3 Data of TG measure of all PUE samples.
Sample | Tonsete (°C) | T10f (°C) | Tmaxg (°C) | T50h (°C) | Tresiduesi (°C) | Mass of residues (%) |
---|---|---|---|---|---|---|
PUE1 | 305 | 318 | 365 | 390 | 460 | 11.52 |
PUE2 | 295 | 315 | 341 | 387 | 458 | 0.30 |
PUE3 | 290 | 305 | 361 | 393 | 456 | 1.52 |
PUE4 | 273 | 295 | 358 | 393 | 458 | 1.52 |
PUE5 | 278 | 299 | 358 | 375 | 446 | 1.92 |
PUE6 | 275 | 298 | 358 | 395 | 458 | 2.32 |
PUE7 | 267 | 285 | 329 | 390 | 453 | 1.11 |
Fig. 4. DMA spectra of polyurethane elastomers extended with pure1,4-BDO (PUE1), BPA (PUE7) and 1,4-BDO/BPA blends with different mole ratios of 9/1, 8/2, 7/3, 6/4, 5/5 (PUE2, PUE3, PUE4, PUE5, PUE6).
Fig. 5. XRD pattern of polyurethane elastomers extended with pure1,4-BDO (PUE1), BPA (PUE7) and 1,4-BDO/BPA blends with different mole ratios of 9/1, 8/2, 7/3, 6/4, 5/5 (PUE2, PUE3, PUE4, PUE5, PUE6).
|
[1] | Wanpeng Hu, Yiming Lei, Jie Zhang, Jingyang Wang. Mechanical and thermal properties of RE4Hf3O12 (RE=Ho, Er, Tm) ceramics with defect fluorite structure [J]. J. Mater. Sci. Technol., 2019, 35(9): 2064-2069. |
[2] | Hongyu Wang, Xudan Yao, Guoxin Sui, Liming Yin, Lihua Wang. Properties of Xanthoceras sorbifolia Husk Fibers With Chemical Treatment for Applications in Polymer Composites [J]. J. Mater. Sci. Technol., 2015, 31(2): 164-170. |
[3] | Zhen Wu, Luchao Sun, Jingyang Wang. Effects of Sintering Method and Sintering Temperature on the Microstructure and Properties of Porous Y2SiO5 [J]. J. Mater. Sci. Technol., 2015, 31(12): 1237-1243. |
[4] | Jifen Wang, Huaqing Xie, Zhong Xin. Preparation and Thermal Properties of Grafted CNTs Composites [J]. J Mater Sci Technol, 2011, 27(3): 233-238. |
Viewed | ||||||
Full text |
|
|||||
Abstract |
|
|||||