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 the contact angle between the lines where the meter is good, 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 or directly with an accurate shape of the image analysis method. Principle outline image analysis method for measuring a contact angle meter retail, the liquid drops on the surface of a solid sample, the shape of the droplets to obtain an image with the camera through the lens of the microscope, then the use of 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. The contact angle is not complicated, popular to say that the droplets in the semi-solid surface morphology of the natural formation of the solid relative to the outer tangent plane. Contact angle is widely used, it can be said of every detail related to the side, for example, we want to rain on automotive glass does not stick, but on the contrary we want to paint on the car plate never fall off. Other vegetables such as pesticides and foliar, coatings and internal and external walls, insulating oil and insulating materials, surface modification of nano-materials, etc., from teaching and research, industrial and agricultural production and daily life, the list goes on. Measures related to measuring the contact angle in front of the analyzer were introduced, should pay attention to the following two questions about the implementation: Balancing time and system temperature stability, when the system is not balanced, the contact angle will change the contact angle measurement of high temperature, which The contact angle is referred to as a dynamic contact angle, dynamic contact angle on a number of research activities of the larger viscosity liquid on a solid planar or spreading are important (due to viscosity, the time length of the balance). Together, the temperature change on larger systems, because of changes in surface tension, contact angle will change the contact angle measurement, and therefore, if one has Kipping up balanced system, the contact angle change can be related to changes in temperature, briefly determining the impact factor approach is to affect the balance of the time is usually in one direction, and the temperature fluctuations can be formed to increase or decrease γ. In addition to balancing time and temperature, the effects of exposure to the elements as well as the angle stable contact angle hysteresis and adsorption. Leizhou contact angle measurement, ShengDing instruments, high temperature contact angle measurement provided by the Dongguan City Sheng Ding Precision Instrument Co., Ltd .. "Contact angle measurement, tensile tester, drop angle detector, tables, interface equipment" preferred Dongguan Ding Sheng Precision Instrument Co., Ltd. (2), the company is located in: Road Town cross by the 2nd cross by Xin'an Road, Dongguan City, years come, Sheng Ding instrument to provide customers the best quality service, Contact: Mr. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Sheng Ding instrument expect to be your long term partner!