The handwheel performance of some description

the flexibility of natural rubber wheel its raw rubber without too much and the crosslinking density of the vulcanizates of elasticity is high. For example, in - ℃ range, the resilience Between ℃, the elastic modulus of steel/only, elongation can be up to %, stretching to the %, after retract a permanent deformation is only %, the flexibility of natural rubber wheel is higher, second only to butadiene rubber wheel in the general rubber wheel.
the strength of natural rubber wheel in elastic material, natural rubber wheel of raw rubber, plastic mixing, the strength of the vulcanizates were relatively high. The tensile strength of the unvulcanized rubber wheel is called green strength, green strength of natural rubber wheel. ~。 Mpa, proper green strength for rubber processing and shaping the handwheel is necessary. Natural rubber wheel also high tear strength, can reach kN/m, its wear resistance is better also. Natural rubber wheel of high mechanical strength because it is the reinforcement of rubber wheel, make the macromolecular chain when stretching along the stress direction orientation to form crystal.
natural rubber wheel electric properties of natural rubber wheel is non-polar substances, is a good insulating material. When natural rubber wheel vulcanization, due to the introduction of polarity factors, such as sulfur and accelerator, so that the insulation performance degradation.
natural rubber wheel medium resistance of natural rubber wheel is a non-polar substances, it is soluble in nonpolar solvents and non-polar oil. Natural rubber wheel intolerance cyclohexane, gasoline, benzene and other media, unvulcanized rubber can be dissolved in the medium, the swelling vulcanized rubber wheel. Natural rubber wheel insoluble in acetone, ethanol, polarity is less soluble in water, resistance to % of hydrofluoric acid, % % % of hydrochloric acid, sulfuric acid, sodium hydroxide, etc. Natural rubber wheel rubber glass transition temperature was minus Temperature ℃ ℃, plastic flow, start ℃ decomposition temperature, decomposition temperature ℃. When natural rubber wheel after curing, the Tg rise, also won't happen again viscous flow. ( ]
the handwheel bakelite performance:
PF phenolic plastics ( Bakelite, bakelite) Material of the surface of the hand wheel light, machinery and strong hardness is not easy to deformation, friction resistance, corrosion resistance, anti-aging, easy to wipe. The handwheel bakelite insulation performance is extremely strong and is not affected by heat and humidity, thermal deformation temperature is greater than the bakelite handwheel/equal degree, strong cold resistance performance can work under the environment of thirty degrees below zero. The handwheel bakelite products photos