Specific Heat Of Natural Rubber

These are the elastomers which are obtained naturally.

Specific heat of natural rubber.

See also tabulated values for gases food and foodstuff metals and semimetals common liquids and fluids and common solids as well as values of molar specific heat for common organic substances and inorganic substances. Natural rubber is made up of solid particles suspended in a milky white liquid called latex that drips from the bark of certain tropical and subtropical trees. Measures heat flow into or out of a sample. In some cases the molecular friction can cause the rubber to heat up to the point that either the metal to rubber bond fails or the rubber itself does.

Because of its elasticity resilience and toughness rubber is the basic constituent of the tires used in automotive vehicles aircraft and bicycles. Specific heat for some common products are given in the table below. The natural rubber specific heat capacity dependence on pressure was estimated on thermodynamic grounds on the basis of the values empirically determined from differential scanning calorimetry data in the temperature range of 70 to 50 c and by means of the tait equation of state in the pressure range of 0 1 240 mpa. The molecular weights of the polymers were measured by gpc and values of m n 91 350 g mol and m n 146 900 g mol were obtained for sbr and nr respectively.

The specific heat of some commonly used solids is given in the table below. Mainly made of natural rubber. Item unit amber color rubber. Tainstruments com styrene butadiene rubber sbr 250 c 400 c 500 c t 0 100 200 300 400 500 600 700 800 64 7hpshudwxuh 48 78.

It is highly elastic and tensile and fits well with work shapes. Natural rubber styrene butadiene rubber nitrile rubber n n. Inferior in chemical resistance and weather resistance. Some theoretical considerations on the transition phenomena at 200 k are included.

More than half of all rubber. See also tabulated values of specific heat of gases food and foodstuff metals and semimetals common liquids and fluids and other common substances as well as values of molar heat capacity of common organic substances and inorganic substances. For conversion of units use the specific heat online unit converter. The constant volume specific heat of natural rubber is calculated from the constant pressure specific heat which is measured experimentally and it is shown that the low temperature part is expressed by a combination of the debye and einstein formulas.

Specific heat online unit converter. The rubber compounds used in this work were prepared with natural rubber nr smr20 and styrene butadiene rubber sbr 1502. This latex rubber is mainly found in countries like brazil india indonesia malaysia and sri lanka.