The temperature distribution of surface heterogeneity and impurity components of air contamination of elements of the sample surface roughness of the sample surface roughness of the sample surface moisture sometimes affect not only the size of the contact angle of water droplet contact angle of water required angle plant, but also non-polar solvent it can be calculated using the formula as the contact angle of methylene iodide, with the following two sets of data. You do not know what instruments to measure the contact angle of water droplets angle test, if it is video optical contact angle measuring instrument, it should be carrying calculate the surface free energy function, and its help file which detailed calculations. The basic principle of the contact angle measurement of a liquid dropped onto a solid surface smooth and even, if spread, droplets will form a balance, the angle between any two phases of its shape by the solid-liquid junction of the decision and Gas , usually specified at the junction of the three-phase solid-liquid interface via droplets from the inside to the angle between the gas-liquid interface of the equilibrium contact angle to θ represents. Relationship between the contact angle and the three interfacial tension of Young equation is as follows: are solid - gas, solid - liquid and liquid - vapor interface tension. Drop angle by the above formula known only when there was clear when l three-phase boundary, that is a constant value; equilibrium contact angle when there is no l. Young equation is also known as wetting equation, it is one of the fundamental equations of interfacial chemistry. Young equation and how much money the three wetting angle of water droplets drop angle _ _ Jiang Sheng Ding instruments provided by the Dongguan City Ding Sheng Precision Instrument Company. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.dgshengding.com) (www.dgshengding.com) strong, credible, in Dongguan, Guangdong specialized instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shengding instrument into the brilliant and you work for a better future!