Application of ATAGO Refractometer in Rubber Oil Testing
Rubber oil is the third largest raw material for raw rubber and carbon black in the rubber industry. In order to improve rubber elasticity, flexibility, ease of processing, and easy mixing properties, it is usually necessary to add specific rubber oil to achieve its purpose. In the actual use of rubber oil, because of different uses and different industries, there are many specific differences in the physical and chemical properties of rubber oil. Therefore, many names and brands have been derived. According to the difference in molecular structure and composition of mineral oil itself, it is divided into paraffin-based rubber oil, naphthenic rubber oil, aromatic rubber oil, etc.; and if it is used according to different objects can be called rubber filling oil, rubber operation Oil, rubber softeners, etc. According to the molecular structure and composition, they are divided into three types: paraffinic oils, naphthenic oils and aromatic oils. Keywords: rubber oil, rubber industry, rubber oil refractive index, tire production The density, kinematic viscosity, aniline point, and refractive index of rubber oils are four important physical constants used to detect and characterize quality and purity. In the study of rubber oils, it was found that the molecular structure of rubber oils is different, and their refractive index sizes are also different. The refractive index measured for a certain rubber oil component is generally referred to as the refractive index of the component. The relationship between the refractive index and the composition of the rubber oil is: the refractive index of the alkane is the smallest, the refractive index of the aromatic hydrocarbon is the highest, and the content of the naphthenes is between the two. At the same time, the refractive index of the rubber oil is also related to the relative molecular mass of the oil. The larger the relative molecular mass, the greater the refractive index. If the same is a paraffin-based rubber oil, the refractive index of the small relative molecular mass is smaller than that of the large phase relative molecular mass. Therefore, for different types of rubber oils, comparisons with each other only make sense if their relative molecular masses are approximately the same. The determination of the refractive index of rubber oil is mainly based on the method specified in Chinese Petroleum and Petrochemical Industry Standard SH/T 0724-2002 "Determination of refractive index and chromaticity dispersion of liquid hydrocarbons," which is based on the American Society for Testing and Materials ASTM D1218-99. Liquid hydrocarbon refractive index measurement standard. The requirements of the refractometer in this industry standard are: (1) the use of a D-line (589nm) light source; (2) a refractive index measurement range of 1.3-1.64,; (3) an accuracy of the refractive index of 0.00006; (4) required Constant temperature water tanks and temperature controllers are used to control the temperature of the samples, and the temperature control accuracy is 0.1°C. Currently, CNPC Hainan, Huizhou, Maoming Branch, Luoyang Petrochemical, and Guangdong Petroleum and Chemical Engineering College have already been used in the petrochemical industry; tire manufacturers Michelin, Pirelli, and Yokohama are all using ATAGO refractometers. The ATAGO refractometer is highly praised by users for its consistent stability and extremely high measurement accuracy. In order to return our customers' love for ATAGO, the company launched a new RX-9000i automatic digital refractometer specifically for the petrochemical industry. It is a new generation of full-range, high-precision refractometer, innovative large-size touch screen design, leading the desktop The new height of the refractometer. The technical indicators of RX-9000i fully comply with and exceed industry standards. Specific parameters: 1. Can quickly and accurately measure the refractive index of various liquids, Brix, concentration; 2. With built-in Peltier semiconductor thermostat device, no external water bath, temperature control accuracy: 0.01 °C; 3. Measurement range: refractive index (nD): 1.32422 to 1.70000; 4. Resolution: refractive index (nD): 0.00001; 5. Measurement accuracy: refractive index (nD): ± 0.00002; 6.SUS316 stainless steel sample slot improves corrosion resistance and bruising resistance, and sapphire prism is accurate and durable. Rail Pad,Rail Pads For Railway,Rail Pad For Fastener,Grooved Eva Rail Pads Anyang Railway Equipment CO.,Ltd , https://www.ayrailwayat.com