Under the requirements of energy saving, environmental protection and lightweight development, lightweight materials such as plastics have gradually expanded from being used as interior trim parts to some exterior trim parts, and even many covering parts; Application components have also expanded from the original small parts such as door handles to larger parts such as engine hood covers. Therefore, the safety and reliability problems caused by the selection of materials have gradually received attention. The aging properties of materials mainly include natural aging, thermal aging, wet heat aging, ultraviolet aging, low temperature aging, ozone aging and so on.
Thermogravimetric analysis, referred to as thermogravimetric analysis, is a method of measuring the mass of a substance in relation to temperature or time under programmed temperature control. The instrument that performs thermogravimetric analysis, called a thermogravimeter, mainly consists of three parts: a temperature control system, a detection system, and a recording system. The application of thermogravimetric analysis is mainly in metal alloys, geology, polymer materials research, drug research and so on.
The method of identifying a substance and determining its chemical composition and relative content according to its spectrum is called spectral analysis. Its advantages are sensitive and rapid. Historically, many new elements have been discovered through spectral analysis, such as rubidium, cesium, helium and so on. According to the analysis principle, spectral analysis can be divided into emission spectrum analysis and absorption spectrum analysis. According to the morphology of the measured components, it can be divided into atomic spectroscopic analysis and molecular spectroscopic analysis.
The properties of a substance that are manifested without chemical reactions are called physical properties. Physical properties such as: color, odor, state, whether it is easy to melt, solidification, sublimation, volatilization, and some properties such as melting point, boiling point, hardness, electrical conductivity, thermal conductivity, ductility, etc., can be measured by instruments. There are also some properties that are calculated by obtaining data in the laboratory, such as solubility, density and so on. These properties are physical properties.
Company Profile
© 2023 Ram (Shanghai) Testing Technology Co., Ltd all rights reserved
