J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (5): 852-857.DOI: 10.1016/j.jmst.2018.09.027
• Orginal Article • Previous Articles Next Articles
Jingbo Huab, Changqing Fangab?(), Shisheng Zhouabc, Youliang Chengb, Hanzhi Hanb
Received:
2018-04-17
Accepted:
2018-05-18
Online:
2019-05-10
Published:
2019-02-20
Contact:
Fang Changqing
About author:
1 These authors contribute equally to this paper.
Jingbo Hu, Changqing Fang, Shisheng Zhou, Youliang Cheng, Hanzhi Han. Microstructure characterization and thermal properties of the waste-styrene-butadiene-rubber (WSBR)-modified petroleum-based mesophase asphalt[J]. J. Mater. Sci. Technol., 2019, 35(5): 852-857.
Penetration degree (25?°C, 100?g/ 0.1?mm) | Softening point (°C) | Ductility (cm) |
---|---|---|
86.13 | 51.25 | >200 |
Table 1 Properties of base asphalt.
Penetration degree (25?°C, 100?g/ 0.1?mm) | Softening point (°C) | Ductility (cm) |
---|---|---|
86.13 | 51.25 | >200 |
Fig. 3 WSBR-modified mesophase asphalt at room temperature (a) ((1) MMA0-420 (2) MMA10-420 (3) MMA20-420 (4) MMA0-450 (5) MMA10-450 (6) MMA20-440) and powder of WSBR-modified mesophase asphalt (b).
Code | WSBR content (wt%) | Holding temperature (°C) | Holding time (h) |
---|---|---|---|
MMA0-420 MMA10-420 MMA20-420 MMA0-450 MMA10-450 MMA20-450 | 0 10 20 0 10 20 | 420 420 420 450 450 450 | 10 10 10 10 10 10 |
Table 2 Preparation parameters of base asphalt and WSBR-modified mesophase asphalt.
Code | WSBR content (wt%) | Holding temperature (°C) | Holding time (h) |
---|---|---|---|
MMA0-420 MMA10-420 MMA20-420 MMA0-450 MMA10-450 MMA20-450 | 0 10 20 0 10 20 | 420 420 420 450 450 450 | 10 10 10 10 10 10 |
Code | ID/IG | Peak width (1600?cm-1) |
---|---|---|
MMA0-420 | 2.26 | 83.1 |
MMA10-420 | 2.40 | 90.5 |
MMA20-420 | 2.47 | 92.5 |
MMA0-450 | 2.32 | 92.0 |
MMA10-450 | 2.51 | 93.0 |
MMA20-450 | 2.56 | 93.6 |
Table 3 Results of ID/IG and peak width of the WSBR-modified mesophase asphalt.
Code | ID/IG | Peak width (1600?cm-1) |
---|---|---|
MMA0-420 | 2.26 | 83.1 |
MMA10-420 | 2.40 | 90.5 |
MMA20-420 | 2.47 | 92.5 |
MMA0-450 | 2.32 | 92.0 |
MMA10-450 | 2.51 | 93.0 |
MMA20-450 | 2.56 | 93.6 |
Code | 2θ (deg.) | d002 (nm) | Lc (nm) | Og |
---|---|---|---|---|
MMA0-420 | 26 | 0.3421 | 2.52 | 0.9891 |
MMA10-420 | 25.466 | 0.3494 | 2.69 | 0.9898 |
MMA20-420 | 25.442 | 0.3497 | 2.69 | 0.9898 |
MMA0-450 | 25.254 | 0.3522 | 2.71 | 0.9899 |
MMA10-450 | 24.840 | 0.3581 | 2.79 | 0.9901 |
MMA20-450 | 24.740 | 0.3595 | 2.73 | 0.9899 |
Table 4 Lattice parameters of the WSBR-modified mesophase asphalt.
Code | 2θ (deg.) | d002 (nm) | Lc (nm) | Og |
---|---|---|---|---|
MMA0-420 | 26 | 0.3421 | 2.52 | 0.9891 |
MMA10-420 | 25.466 | 0.3494 | 2.69 | 0.9898 |
MMA20-420 | 25.442 | 0.3497 | 2.69 | 0.9898 |
MMA0-450 | 25.254 | 0.3522 | 2.71 | 0.9899 |
MMA10-450 | 24.840 | 0.3581 | 2.79 | 0.9901 |
MMA20-450 | 24.740 | 0.3595 | 2.73 | 0.9899 |
Structure Type | Optical Characteristics | |
---|---|---|
Isotropic | No optical activity (exist in mesophase asphalt with mesophase content <100%) | |
Mosaic | Fine MosaicMedium MosaicCoarse Mosaic | Anisotropic crystal radius<1.5μmAnisotropic crystal radius 1.5-5.0μmAnisotropic crystal radius 5.0-10.0μm |
Streamline | Medium StreamlineCoarse StreamlineWide-area Streamline | Anisotropic crystal length<30?μm, width<5μmAnisotropic crystal length 30-60?μm, width 5-10μmAnisotropic crystal length>60?μm, width>10μm |
Wide-area | Anisotropic crystal radius>60?μm |
Table 5 Mesophase structure types.
Structure Type | Optical Characteristics | |
---|---|---|
Isotropic | No optical activity (exist in mesophase asphalt with mesophase content <100%) | |
Mosaic | Fine MosaicMedium MosaicCoarse Mosaic | Anisotropic crystal radius<1.5μmAnisotropic crystal radius 1.5-5.0μmAnisotropic crystal radius 5.0-10.0μm |
Streamline | Medium StreamlineCoarse StreamlineWide-area Streamline | Anisotropic crystal length<30?μm, width<5μmAnisotropic crystal length 30-60?μm, width 5-10μmAnisotropic crystal length>60?μm, width>10μm |
Wide-area | Anisotropic crystal radius>60?μm |
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