Yangchun contact angle measurement _ _ direct contact angle measurement instrument ShengDing (certified merchants) are provided by Dongguan Sheng Ding Precision Instrument Co., Ltd .. Dongguan Sheng Ding Precision Instrument Co., Ltd. (www.gdshengding.com) is a specialist in the "contact angle measurement, tensile tester, drop angle detector, tables, interface equipment," the company. Since its inception, we adhere to the "honesty, sound management" approach, the courage to participate in healthy competition in the market, so that the "" brand has a good reputation. We adhere to the "service first, customers first" principle, so ShengDing instrument has won the trust of customers in the congregation dedicated instrumentation, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you! Droplet height / width method is an overall drop method. When consideration is summarized accounting entire droplet shape is not part of, so when the shape of the droplet was disturbed when other objects, such as needles placed inside the droplets, it will affect the way the accuracy of, and even longer applies. The contact angle is defined as the gas, liquid and solid at the intersection by gas - liquid interface tangent and solid - liquid junction angle θ between the lines, is a measure of the degree of wetting. If θ90 °, then the solid is liquid repellent, the liquid does not wet the solid that is easy to move on the surface and can not enter the pores. The contact angle of existing test methods are usually two: one for the shape of the image analysis method; the other for the gravimetric method which is often referred to as a wetting balance or osmosis contact angle meter, but the most widely used, the measured value is best direct and accurate image analysis principle or appearance. Overall image analysis method for the liquid drops on solid sample surface contact angle measurement wholesale, shape image obtained by microscopic droplets head and camera, then use digital image processing and Some algorithms droplet contact angle of the image calculated from the calculation method of the contact angle is usually based on the mathematical model of a particular droplet can be considered as part of a ball or conical, and such as the width / height by measuring specific parameters or by directly fitting the calculated contact angle values. Young-Laplace equation describes the interface in a closed, the relationship between the curvature of the interface with the external pressure difference and interfacial tension is used to describe a liquid droplet axisymmetric contours accurately to calculate the contact angle. Many die insulation measures available asbestos cloth or glass cloth wrapped aluminum hydroxide cotton insulation warm. Now on the market there is a thermal insulation coating is the ideal insulation material for the mold contact angle measuring instrument retail, it is the Chinese and long fiber, pulp and a mixture of foam insulation, moderate viscosity, easy to apply. This material is commonly used for chemical, heating pipe insulation material water contact angle measurement, slightly containing alkaline (corrosive mold). After use at 150 ℃ condition did not find a charred, melted, the negative impact of odor. While the material is very light, strong plasticity contact angle measuring instrument, easy to mold surface to form a more beautiful way of cooling water cooling is used in most of the mold, but also has its drawbacks; require pipeline seal better, way down pipes must be smooth, water large waste of resources. When the cooling temperature exceeds 100 ℃, easy to produce steam explosion. The advantage is a large heat capacity, enabling rapid cooling. Cooling air is an ideal method for cooling and water-cooled on the contrary, it does not require tight duct seal, there is a waste of resources, may be cooled to a temperature above 100 ℃ mold, cooling rate may be determined by the gas flow, and sources of simple and convenient, there is a certain scale production plant can be made more convenient gas source.