Yangzhou Jingzhuo Rubber & Plastic Laboratory offers testing and analysis services for rubber shock-absorbing products, including rubber supports, rubber feet, rubber springs, rubber bellows, rubber pads, and rubber corner guards. The scope of testing covers physical and chemical properties, mechanical properties, and aging properties.
JingZhu Instrument's Rubber and Plastic Laboratory primarily conducts testing and analysis based on widely-accepted standards both domestically and internationally. With its strong technical capabilities, the lab is able to assist clients in developing new testing methods and conducting relevant research and analysis according to their specific requirements.
Hotspot Indicator Testing: Physical property testing, mechanical property testing, mechanical performance testing, aging performance testing, combustion performance testing, thermal performance testing, applicability testing, etc.
Static stiffness: Refers to the ratio of the change in pressure (or tensile force) of the damping rubber within a certain displacement range to the change in displacement. The measurement of static stiffness must be conducted within a specific displacement range, and the value of static stiffness can vary with different displacement ranges. However, some customers require a change curve measured over the entire displacement range.
2. Dynamic Stiffness: Refers to the ratio of the change in pressure (or tensile force) to the change in displacement within a certain range of displacement and at a specific frequency for a shock-absorbing rubber. The measurement of dynamic stiffness must be conducted within a certain range of displacement and at a specific frequency; dynamic stiffness values measured at different displacement ranges and frequencies will vary.
3. Dynamic Stiffness Ratio: The ratio of the dynamic stiffness to the static stiffness of the shock-absorbing rubber within a certain displacement range.
4. Damping Coefficient: During the stress-bearing process of shock-absorbing rubber, there is a certain phase difference between the deformation of the rubber and the stress on the rubber. Generally, the stress of the rubber precedes its deformation by a certain phase angle δ. The so-called damping coefficient is the tangent of the phase angle δ between the rubber stress and the rubber deformation, i.e., the damping coefficient τ = tgδ.
5. Twist stiffness: Refers to the ratio of the torsional moment to the torsional angle within a certain range of twist angle for the shock-absorbing rubber.
