Three spheres rubber flexible connection material and function
Feb-23-11 Visits:302
In the arrangement of the shape are very different, which determines the three-sphere rubber soft joint arrangement of thermal deformation and dynamic re-vulcanization behavior has its own characteristics, that is, it is more difficult to onset of dynamic re-vulcanization, dynamic re-vulcanization of the grain scale is larger. This is because the three-sphere rubber flexible joint arrangement coarse columnar crystal between the phase difference is small, does not have the same general large angle grain boundary of the reason for the nucleation ability, together with the three-sphere rubber flexible joint arrangement in the composition of the deviation will also affect the dynamic re-vulcanization process.
Three spheres of rubber flexible connections at low temperatures, resistance, coefficient of linear expansion, thermal conductivity, mass thermal fusion and magnetic properties will be greatly changed. Three sphere rubber flexible connection coefficient becomes smaller at low temperature; thermal conductivity, mass heat capacity at low temperature is sharply reduced; Young's modulus (longitudinal modulus of elasticity) in the temperature drop when together. Because the three-sphere rubber hose has a low temperature (Subzreo temperature) of Ms point (martensite anomaly start temperature or martensite generation temperature), so when kept below Ms point, can generate martensite.
The generation of martensite at low temperature is what makes the three-sphere rubber flexible connection of the representative steel SUS304 (18Cr-8Ni) at room temperature to the wrong magnetic, and in the low-temperature environment becomes magnetic. In the low temperature environment, the deformation energy is small. In the low-temperature environment, the phenomenon of decreasing elongation and section shortening rate is called low-temperature embrittlement. It mostly occurs in the body-centered cubic tissue of the three-sphere rubber flexible joint. The suitable temperature is the condition for biological existence.
