KNOWLEDGE - Page 28 of 98

24 Oct

Understand the characteristics of the differential thermal analyzer

Differential thermal analyzer is a technique to measure the temperature difference and temperature relationship between a substance and a reference substance under programmed temperature control. The DTA curve describes the temperature (△T) between the sample and the reference material as a function of temperature or time. As a classical thermal analysis method of thermal effect under controlled program temperature, it has been widely used in the research and development, process optimization, quality control and failure analysis of various materials [...]

24 Oct

The use of differential thermal analyzer tips together to understand the next

The principle of the differential thermal analyzer is: the sample to be tested and the reference substance (thermal inert substance) are placed in the furnace under the same conditions, and the temperature is heated or cooled at the same speed according to the given program. When the heated sample produces changes in physical and chemical properties at different temperatures (such as phase transformation, crystallization structure transformation, crystallization, boiling, sublimation, gasification, melting, dehydration, decomposition, oxidation, reduction… And other reactions), accompanied [...]

24 Oct

High temperature differential thermal analyzer is mainly used in the following fields

High temperature differential thermal analyzer is an important thermal analysis method, which is a test technology to measure the relationship between the temperature difference of a substance and a reference substance and temperature or time under the temperature control program. This method is widely used to determine the characteristic temperature and the heat absorbed or released during the thermal reaction of a substance, including physical or chemical reactions such as phase transformation, decomposition, combination, solidification, dehydration, evaporation, etc. Widely [...]

24 Oct

What needs to be done before using a synchronous thermal analyzer

Synchronous thermal analyzer controller, software advantages: 1, the use of imported ARM processor, sampling speed, processing speed is faster. 2. Four-channel sampling AD collects DSC signal, TG signal and temperature T signal. 3, the power supply and water circulation parts are separately controlled by 8bit single-chip microcomputer, so that the host and the cooling part are separated and do not interfere with each other, but the two are closely connected, and the cooling part accepts the control of the host. 4, USB two-way [...]

23 Oct

Thermogravimetric analyzer operation method and precautions

What is a thermogravimetric analyzer? For many customers who have never touched this instrument, it may be relatively unfamiliar. However, for some industries engaged in the production of plastics, metals and plastics, the thermogravimetric analyzer is a commonly used testing instrument. It is an instrument that uses thermogravimetric method to measure the relationship between the mass of a substance and the temperature under programmed temperature control. The data measured by experiments are used to study the thermal stability and [...]

23 Oct

Principle and structure of high temperature differential thermal analyzer

Principle and structure of high temperature differential thermal analyzer High temperature differential thermal analyzer is a thermal analytical instrument that tests the thermal effect of substances in the process of heating or cooling, which can study the relationship between the physical and chemical change rate of substances and temperature, as well as the characteristics of some physical and chemical properties of substances under the action of heat. The functional relationship between the temperature difference and the temperature between the substance [...]

23 Oct

What does a differential scanning calorimeter measure?

Recently, when many customers consult the differential scanning calorimeter, they will want to know what it can measure. In response to this common problem, Nanjing Exhibition small series to carry out a simple introduction. Before this, we have to have a basic understanding of this instrument, in fact, differential scanning calorimeter is also referred to as DSC, DSC in order to make the sample in a certain temperature program (rise/fall/constant temperature) control, observe the sample end and the reference [...]

23 Oct

Do you know how to use a fast heat conductor

Rapid thermal conductivity meter is a new type of thermal conductivity measuring instrument. The advent of the thermal conductivity tester is a major improvement in the testing efficiency of material thermal conductivity. Its test speed and repeatability are the traditional power method, heat flow meter method can not be done, because the test principle of the instrument is only related to the thermal characteristics of the material, and the test only acts on the surface of the material. Therefore, [...]

20 Oct

How to detect the appearance of architectural coating film?

The purpose of testing the appearance of architectural coating film is to evaluate the aesthetics and protective properties of the coating film formed after construction, including surface smoothness, color, gloss, adhesion, weather resistance, durability and other indicators. If the appearance quality of the coating film is poor, it is easy to have problems such as coating shedding, color difference, whitening, deformation and so on during use, which affects the aesthetics and service life of the building. Therefore, the inspection [...]

20 Oct

What is the carbon black dispersion tester, what are the maintenance methods?

What is a carbon black dispersion tester? What is it used for? For these routine instrument problems, users who have not come into contact with this instrument know very little. In fact, the carbon black dispersion tester is the process of dispersing the substance from the high concentration part of the material to the low concentration part. Carbon black dispersion tester is used to detect the color and carbon black dispersion in polyolefin pipes, pipe fittings and mixed ingredients. [...]