Chem. J. Chinese Universities ›› 2023, Vol. 44 ›› Issue (8): 20230023.doi: 10.7503/cjcu20230023
• Polymer Chemistry • Previous Articles Next Articles
QIAN Zhehao, WANG Shuo, ZONG Xin, CAI Lei, HE Aihua()
Received:
2023-01-15
Online:
2023-08-10
Published:
2023-05-25
Contact:
HE Aihua
E-mail:ahhe@qust.edu.cn
Supported by:
CLC Number:
TrendMD:
QIAN Zhehao, WANG Shuo, ZONG Xin, CAI Lei, HE Aihua. Regulation of TBIR on the Structure and Properties of Natural Rubber Based Nanocomposites[J]. Chem. J. Chinese Universities, 2023, 44(8): 20230023.
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
NR | 100 | 50 | 90 | 40 |
W⁃NR | 0 | 66.5 | 0 | 66.5 |
TBIR | 0 | 0 | 10 | 10 |
ZnO⁃80 | 4.4 | 4.4 | 4.4 | 4.4 |
Stearic acid | 2.0 | 2.0 | 2.0 | 2.0 |
Antioxidant 4020 | 2.0 | 2.0 | 2.0 | 2.0 |
Antioxidant RD | 1.5 | 1.5 | 1.5 | 1.5 |
Carbon black(N220) | 35 | 35 | 35 | 35 |
Silica(7000GR) | 15 | 0 | 15 | 0 |
Silane coupling agent(Si⁃69) | 1.5 | 0 | 1.5 | 0 |
Accelerator(NS⁃80) | 1.76 | 1.76 | 1.76 | 1.76 |
Sulfur⁃80 | 1.38 | 1.38 | 1.38 | 1.38 |
Table 1 The recipes for the rubber compounds
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
NR | 100 | 50 | 90 | 40 |
W⁃NR | 0 | 66.5 | 0 | 66.5 |
TBIR | 0 | 0 | 10 | 10 |
ZnO⁃80 | 4.4 | 4.4 | 4.4 | 4.4 |
Stearic acid | 2.0 | 2.0 | 2.0 | 2.0 |
Antioxidant 4020 | 2.0 | 2.0 | 2.0 | 2.0 |
Antioxidant RD | 1.5 | 1.5 | 1.5 | 1.5 |
Carbon black(N220) | 35 | 35 | 35 | 35 |
Silica(7000GR) | 15 | 0 | 15 | 0 |
Silane coupling agent(Si⁃69) | 1.5 | 0 | 1.5 | 0 |
Accelerator(NS⁃80) | 1.76 | 1.76 | 1.76 | 1.76 |
Sulfur⁃80 | 1.38 | 1.38 | 1.38 | 1.38 |
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
Bound rubber(%, mass fraciton) | 30 | 29 | 32 | 34 |
Mooney viscosity | 52 | 41 | 54 | 45 |
Green strength/MPa | 0.9 | 1.2 | 1.8 | 1.8 |
Young modulus/MPa | 0.2 | 0.3 | 0.5 | 0.5 |
Elongation at break(%) | 757 | 719 | 749 | 795 |
Shore A Hardness/(°) | 22 | 23 | 33 | 31 |
Table 2 Physical and mechanical properties of NR-based rubber composites
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
Bound rubber(%, mass fraciton) | 30 | 29 | 32 | 34 |
Mooney viscosity | 52 | 41 | 54 | 45 |
Green strength/MPa | 0.9 | 1.2 | 1.8 | 1.8 |
Young modulus/MPa | 0.2 | 0.3 | 0.5 | 0.5 |
Elongation at break(%) | 757 | 719 | 749 | 795 |
Shore A Hardness/(°) | 22 | 23 | 33 | 31 |
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
Tensile strength/MPa | 28.5 | 29.1 | 27.4 | 27.7 |
Modulus at 100%/MPa | 1.9 | 2.0 | 1.9 | 2.0 |
Modulus at 300%/MPa | 9.9 | 9.9 | 9.4 | 9.8 |
Elongation at break(%) | 623 | 637 | 655 | 629 |
Tear strength/(kN·m-1) | 102±4 | 135±2 | 96±4 | 98±2 |
Shore A hardness/(°) | 57 | 59 | 57 | 58 |
Rebound(%) | 54 | 54 | 55 | 55 |
Heat build⁃up/℃ | 34.2 | 32.6 | 34.9 | 33.1 |
DIN Abrasion/(cm3/40 m) | 0.168±0.004 | 0.171±0.003 | 0.149±0.003 | 0.153±0.002 |
tanδ@60 ℃(10 Hz, 5%) | 0.170 | 0.165 | 0.168 | 0.154 |
10-4Tensile fatigue at 100% | 33 | 27 | 43 | 33 |
Table 3 Physical and mechanical properties of the NR⁃based vulcanizates
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
Tensile strength/MPa | 28.5 | 29.1 | 27.4 | 27.7 |
Modulus at 100%/MPa | 1.9 | 2.0 | 1.9 | 2.0 |
Modulus at 300%/MPa | 9.9 | 9.9 | 9.4 | 9.8 |
Elongation at break(%) | 623 | 637 | 655 | 629 |
Tear strength/(kN·m-1) | 102±4 | 135±2 | 96±4 | 98±2 |
Shore A hardness/(°) | 57 | 59 | 57 | 58 |
Rebound(%) | 54 | 54 | 55 | 55 |
Heat build⁃up/℃ | 34.2 | 32.6 | 34.9 | 33.1 |
DIN Abrasion/(cm3/40 m) | 0.168±0.004 | 0.171±0.003 | 0.149±0.003 | 0.153±0.002 |
tanδ@60 ℃(10 Hz, 5%) | 0.170 | 0.165 | 0.168 | 0.154 |
10-4Tensile fatigue at 100% | 33 | 27 | 43 | 33 |
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
Tensile strength/MPa | 28.0 | 28.5 | 27.3 | 27.6 |
Elongation at break(%) | 566 | 557 | 595 | 561 |
Shore A hardness/(°) | 63 | 65 | 63 | 64 |
Aging coefficient(%) | 89 | 86 | 91 | 89 |
Table 4 Physical and mechanical properties of the NR-based vulcanizates after aging under air at 100 ℃ for 48 h
m(NR)/m(W⁃NR)/m(TBIR) | 100/0/0 | 50/66.5/0 | 90/0/10 | 40/66.5/10 |
---|---|---|---|---|
Tensile strength/MPa | 28.0 | 28.5 | 27.3 | 27.6 |
Elongation at break(%) | 566 | 557 | 595 | 561 |
Shore A hardness/(°) | 63 | 65 | 63 | 64 |
Aging coefficient(%) | 89 | 86 | 91 | 89 |
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