The Study Of A CVT Belt Using The
Composite Material Of Carbon Fiber-reinforced
Thermoplastic Resin
Author(s)
T. Minagawa, T. Tanaka, A. Yoshihiko, T. Ichiki & A. Inoue
Abstract
The purpose of this study is to develop automotive frictional parts, especially
continuously variable transmission (CVT) blocks by using a composite material
made of thermoplastics resin and fiber. CVT blocks are used at about 100ºC
under high pressure and friction condition. So, we have used nylon 9T, PA9T.
PA9T has high a melting point that is higher than maximum temperature of the
state of slip. To apply composite materials to CVT blocks, the material properties
such as high strength, modulus of elasticity and fatigue strength are important.
Therefore, a purpose of this study is improvements of mechanical properties by
adding fillers to PA9T with various compounding and molding condition. PA9T
and CF were mixed by using twin screw extruder. After compounding, dumbbell
specimens were made by using injection molding machine. Bending, fatigue and
abrasion tests were conducted. Moreover, we evaluated the transmission capacity
of CVT belt made of PA9T composites and conducted slip test. According to
results of tests, PA9T with CF38.8 vol% achieved desired values of CVT. The
CVT belt has 40 Nm of torque under 2.0 kN of axle load.
Keywords: CVT, PA9T, transmission capacity evaluating test.
Keywords
CVT, PA9T, transmission capacity evaluating test.
Related Book
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