Weiyili testing instrument

Weiyili testing instrumentComposed of a host and a heating module, the heating module is equipped with two independent controllers for temperature control and over temperature alarm. The temperature controller keeps the temperature of the heating module at a constant level. If the heating temperature unexpectedly exceeds the set temperature, the independent alarm system will immediately cut off the heating.

There are 10 seat holes inside the heating module (customizable according to customer requirements) for placing glass test tubes. The glass tube containing the sample is inserted into the seat hole of the heating module and sealed with a lid with a hook. There is a test strip hanging from the hook inside the testing tube.

Weiyili testing instrumentTechnical parameters:

1. Temperature range: 30-200 ℃.

2. Temperature accuracy: ± 0.001 ℃.

3. Heating rate: 0.5-10 ℃/min can be freely set.

4. Temperature control stability: ± 0.1 ℃.

5. Temperature controller: intelligent dynamic compensation for heating power, temperature calibration, bidirectional control, communication, etc.

6. Explosion protection screen: made of armored glass, users can observe the sample through the protective screen.

7. Specification of litmus paper: 9.5x25.4 cm.

8. Heating module: 10 seat holes.

9. Overtemperature protection and alarm system: 2 independent temperature controllers, used for temperature control and overtemperature alarm respectively. If the heating temperature unexpectedly exceeds a certain temperature, the independent alarm system will immediately cut off the heating.

Thermal sensitivity, thermal stability, decomposition temperature, and thermodynamic testing methods:

1. Automatic explosion point tester: The automatic explosion temperature tester is used to test and evaluate the thermal sensitivity of energetic materials. Thermal sensitivity is a key indicator to measure the ease of explosion of energetic materials under external thermal energy, which is crucial for ensuring the safety of energetic materials during storage, transportation, and use.

2. Explosion resistant differential thermal analyzer: The explosive differential thermal analyzer is specifically used to test the thermal stability, stability, and compatibility of energetic materials. The test results can accurately describe the relationship between the physical and chemical properties of the material and temperature changes. The device can test the starting decomposition temperature, peak temperature, ending decomposition temperature, temperature difference up to large temperature, Onset point temperature, as well as the full temperature range curve of the sample during the heating process from room temperature to 550 ℃.

3. Dynamic vacuum stability tester: tests the amount of gas released by energetic materials during heating to evaluate their chemical stability and compatibility. The main applications include: thermal safety testing, storage life assessment, compatibility testing, aging testing, full decomposition temperature and decomposition time testing, small parallel reaction vessels, thermal decomposition process kinetics testing, etc.

4. Large scale critical temperature tester: Under external conditions such as strong electromagnetic radiation or high temperature, solid propellants will absorb electromagnetic energy and be heated. When a certain temperature is reached, a thermal decomposition reaction occurs inside, causing a sharp increase in temperature and potentially leading to combustion or explosion. Therefore, understanding and mastering the critical temperature of solid propellants is very important. In addition, critical temperature testing can provide guidance for the storage and transportation of propellants.

5. Explosive heat tester: can be used to test the explosive heat, explosive volume, and pressure of explosive systems of energetic materials; It can also be used to test the combustion calorific value of various organic or inorganic samples. The experiment can be conducted in different atmospheric environments (air, nitrogen, oxygen, vacuum). The ignition system can resist the impact of detonation waves, high temperature, high pressure, and active oxygen environment. The pressure collection system detects real-time pressure changes inside the explosive container and draws pressure curves.

6. Solid propellant burning rate testing system: used to test important parameters of material combustion process, such as burning rate coefficient, burning rate pressure index, burning rate temperature sensitivity coefficient, etc. These parameters are key indicators for characterizing the combustion performance of propellants. They not only help evaluate the combustion efficiency of propellants, but also provide important theoretical basis for the formulation design and production process of propellants.

7. Automatic lifting acceleration aging tester: Energy containing materials undergo exothermic decomposition during use or storage, and the exothermic reaction rate is proportional to temperature. Under normal conditions, the decomposition rate is very low, and accelerated aging tests can be used to predict the service life of explosives. During the experiment, evaluate changes in sample sensitivity, stability, chemical composition, or mechanical properties.

8. Bergman Kink tester: tests the thermal stability of substances and is used to evaluate the chemical stability of energetic materials. This test is based on measuring the content of gas products released during the thermal decomposition process of the sample. The generation of gas products is evaluated by volumetric analysis of acids in water extracts.

9. Viennese tester: used to test the chemical stability of energetic materials, and can also test the chemical stability of nitrocellulose and its products. Add a quantitative sample to a test tube and heat it under specified conditions to test the heating time required for the litmus paper to turn red or for the sample to release brown smoke, in order to evaluate its chemical stability.

10. Methyl violet tester: Evaluate the thermal stability of energetic materials. This method mainly uses NO2 produced by the decomposition of nitrate esters to evaluate the stability of the tested substance, which is determined by the change in color of the test paper. The testing time starts from the insertion of the sample into the heating module until the color of the test paper changes.

11. Absolute heat calorimeter: It can directly simulate uncontrolled reactions on a factory scale in the laboratory. The use of insulated Dewar vessels can minimize the heat loss between the calorimeter (low phi factor value) and the environment. The Dewar system consists of a double shell 1.1 L stainless steel reaction vessel. The rated pressure at room temperature is 35 bar, and a mechanical stirring device is provided.

12. Local thermal sensitivity meter: used to test the reaction of samples at different temperatures, such as thermal decomposition, combustion, etc. Through testing, its thermal stability, thermal sensitivity and other properties can be understood, providing a basis for subsequent optimization and improvement. Local thermal sensitivity testing is a method of evaluating the reaction characteristics of energetic materials under local heating conditions. It can be used to characterize the difficulty of combustion or explosion of a sample under the action of a local heat source.

13. Slow burning test instrument: The burning test of energetic materials is designed to test the sensitivity of chemicals to unexpected thermal stimuli and the severity of their reactions in manufacturing, storage, transportation, and practical environments.

For detailed information, please contact IDEA SCIENCE.