Abstract
The lubrication performance of polyisobutylene which is used as a lubricant for bolt tightening, was investigated in order to understand the lubrication mechanism during the tightening process. Ball on plate type spinning friction tests were conducted, and three kind of polyisobutylene(PIB-L, M, H) in which the highest viscosity is PIB-H, followed by PIB-M and PIB-L, and polyphenyl ether(5P4E) were used as lubricants in this study. Results show that the friction coefficient of PIB at initial stage of the tests at 400 MPa, depends on the viscosity, and that of PIB-H is the highest in the lubricants. It is also shown the friction coefficient increase with increasing contact pressure, and that of PIB-L, PIB-H and 5P4E at 600 MPa is greater than that of PIB-M. Large wear is observed on the contact surface after the test. In the spinning test, the thickness of entrapment oil film decrease with time, and the decreasing rate in 5P4E is greater than that in PIB-M. These results suggest that the lubrication film formed by PIB-M has an ability to prevent for wear and seizure at the condition with high contact pressure, such as the contact of screw tightening.
| Original language | English |
|---|---|
| Pages (from-to) | 866-873 |
| Number of pages | 8 |
| Journal | Toraibarojisuto/Journal of Japanese Society of Tribologists |
| Volume | 61 |
| Issue number | 12 |
| Publication status | Published - 2016 |
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Keywords
- Friction
- Lubricant
- Polyisobutylene
- Polyphenyl ether
- Screw
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
Cite this
Study on tribological properties of polyisobutylene lubricant for use in screw tightening. / Otsu, Takeftimi; Komatsu, Kyoichi; Hashimura, Shinji.
In: Toraibarojisuto/Journal of Japanese Society of Tribologists, Vol. 61, No. 12, 2016, p. 866-873.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study on tribological properties of polyisobutylene lubricant for use in screw tightening
AU - Otsu, Takeftimi
AU - Komatsu, Kyoichi
AU - Hashimura, Shinji
PY - 2016
Y1 - 2016
N2 - The lubrication performance of polyisobutylene which is used as a lubricant for bolt tightening, was investigated in order to understand the lubrication mechanism during the tightening process. Ball on plate type spinning friction tests were conducted, and three kind of polyisobutylene(PIB-L, M, H) in which the highest viscosity is PIB-H, followed by PIB-M and PIB-L, and polyphenyl ether(5P4E) were used as lubricants in this study. Results show that the friction coefficient of PIB at initial stage of the tests at 400 MPa, depends on the viscosity, and that of PIB-H is the highest in the lubricants. It is also shown the friction coefficient increase with increasing contact pressure, and that of PIB-L, PIB-H and 5P4E at 600 MPa is greater than that of PIB-M. Large wear is observed on the contact surface after the test. In the spinning test, the thickness of entrapment oil film decrease with time, and the decreasing rate in 5P4E is greater than that in PIB-M. These results suggest that the lubrication film formed by PIB-M has an ability to prevent for wear and seizure at the condition with high contact pressure, such as the contact of screw tightening.
AB - The lubrication performance of polyisobutylene which is used as a lubricant for bolt tightening, was investigated in order to understand the lubrication mechanism during the tightening process. Ball on plate type spinning friction tests were conducted, and three kind of polyisobutylene(PIB-L, M, H) in which the highest viscosity is PIB-H, followed by PIB-M and PIB-L, and polyphenyl ether(5P4E) were used as lubricants in this study. Results show that the friction coefficient of PIB at initial stage of the tests at 400 MPa, depends on the viscosity, and that of PIB-H is the highest in the lubricants. It is also shown the friction coefficient increase with increasing contact pressure, and that of PIB-L, PIB-H and 5P4E at 600 MPa is greater than that of PIB-M. Large wear is observed on the contact surface after the test. In the spinning test, the thickness of entrapment oil film decrease with time, and the decreasing rate in 5P4E is greater than that in PIB-M. These results suggest that the lubrication film formed by PIB-M has an ability to prevent for wear and seizure at the condition with high contact pressure, such as the contact of screw tightening.
KW - Friction
KW - Lubricant
KW - Polyisobutylene
KW - Polyphenyl ether
KW - Screw
UR - http://www.scopus.com/inward/record.url?scp=85015389440&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85015389440&partnerID=8YFLogxK
M3 - Article
VL - 61
SP - 866
EP - 873
JO - Toraibarojisuto/Journal of Japanese Society of Tribologists
JF - Toraibarojisuto/Journal of Japanese Society of Tribologists
SN - 0915-1168
IS - 12
ER -