The Importance of Hydrophobic Testing for Automotive Windshield Cleaning Fluid

The contact angle refers to the tangent of the gas-liquid interface at the intersection of gas, liquid, and solid phases. The angle θ between this tangent and the solid-liquid boundary on the liquid side is a measure of the degree of wetting. It is currently the main method for surface performance testing. Using the principle of optical imaging, measure the contact angle, wetting properties, interfacial tension, forward and backward angles, surface energy, etc. of the sample surface. It mainly consists of a light source, an injection unit, a sample stage, a collection system, analysis software, etc. The automatic contact angle measuring instrument is used to test the hydrophilicity and hydrophobicity of glass after cleaning. It adopts a precision differential liquid inlet device, which has high cost-effectiveness, strong scalability, comprehensive functions, and can meet various conventional measurement needs. Currently, it has been widely used in many universities, colleges, and enterprises.

The automatic contact angle measuring instrument is used to test the hydrophilicity and hydrophobicity of glass after cleaning, and to analyze the contact angle, surface tension, and surface energy of liquids on solid surfaces. Realize the analysis of hydrophilicity/hydrophobicity, wettability, cleanliness detection, treatment effect evaluation of solid surfaces, as well as the analysis of processes such as liquid competition, adsorption, absorption, and spreading. Widely used in testing and research in many fields such as chemical engineering, medicine, food, electronics, printing and dyeing, spraying, and science and education.

Car windshield washer fluid refers to a liquid used in conjunction with car wipers to remove dirt from the surface of car windshields. Automotive windshield cleaning solution is composed of various surfactants and additives. Surfactants usually have functions such as wetting, penetration, and solubilization, thus playing a role in cleaning and removing dirt.

Carry out testing of automotive windshield cleaning solution, including freezing point, pH value, appearance, and cleaning power at low usage concentrations,

Testing Scope

Automotive windshield cleaning solution is mainly divided into water-based and hydrophobic types according to its components. Water based automotive windshield cleaning solution is divided into ordinary and low-temperature types according to its freezing point.

Test Item

Freezing point, pH value, appearance, cleaning power at low usage concentrations, compatibility, thermal stability, low temperature stability, water resistance

Metal corrosiveness: Quality changes and appearance of metal specimens such as aluminum sheets, brass sheets, galvanized steel sheets, etc

Effects on rubber: Quality changes, hardness changes, and appearance of rubber specimens such as natural rubber and chloroprene rubber

Effects on plastics: Quality changes and appearance of plastic specimens such as polyethylene resin, polypropylene resin, ABS resin, soft polyvinyl chloride resin, and polyoxymethylene resin

The impact on organic coatings for automobiles: coating hardness and appearance of acrylic resin baking paint, amino alcohol resin paint and other coating test specimens