Thermal test

Table of inspection items

Test category physical performance

Instrument name: comprehensive thermal analyzer

Tel: 17611215338

E-mail address: tztczj@163.com

Trial price in person

Test cycle: 5-10 working days

Detection parameter DTA

Introduction to test parameters:

DTA is the abbreviation of differential thermal analysis. It refers to a testing technology to measure the relationship between the temperature difference of substance and reference substance and temperature or time under the programmed temperature control. It is widely used to measure the characteristic temperature and the heat absorbed or released in thermal reaction, including physical or chemical reactions such as phase transformation, decomposition, combination, solidification, dehydration, evaporation, etc. Function and purpose of instrument:

Thermal stability; composition analysis; melting point determination; decomposition temperature; reduction temperature; decomposition kinetics; material oxidation resistance; material synthesis process, etc.

Test parameter TG

Introduction to test parameters:

Thermogravimetry analysis (Tg or TGA) is a kind of thermal analysis technology that measures the relationship between the quality of the sample to be tested and the temperature change under the temperature controlled by the program. It is used to study the thermal stability and components of the material. Function and purpose of instrument:

Thermal stability; composition analysis; melting point determination; decomposition temperature; reduction temperature; decomposition kinetics; material oxidation resistance; material synthesis process, etc.

Table of inspection items

Test parameter differential scanning calorimetry DSC

Test category physical performance

Instrument name differential scanning calorimeter

Tel: 17611215338

E-mail address: tztczj@163.com

Trial price in person

Test cycle: 5-10 working days

Introduction to test parameters:

Differential scanning calorimetry. Under the programmed temperature, measure the relationship between the power difference (in the form of heat, for example) input to the sample and reference and the temperature. The curve recorded by differential scanning calorimeter is called DSC curve. It can measure many kinds of thermodynamic and dynamic parameters, such as specific heat capacity, reaction heat, transformation heat, phase diagram, reaction rate, crystallization rate, polymer crystallinity, sample purity and so on, with the rate of heat absorption or heat release of sample, i.e. the heat flow rate DH / dt (unit MJ / s) as the ordinate and the temperature T or time t as the abscissa.

Function and purpose of instrument:

Determination of melting point; glass transition temperature; phase transition temperature; melting heat and crystallization heat; purity; specific heat; oxidation induction period; crystallinity, etc

Test parameter: coefficient of thermal expansion

Test category physical performance

Instrument name: thermal expansion analyzer

Tel: 17611215338

E-mail address: tztczj@163.com

Trial price in person

Test cycle: 5-10 working days

Introduction to test parameters:

The relative change in the length or volume of a solid for every 1K increase in temperature. It is divided into linear expansion coefficient and volume expansion coefficient. Function and purpose of instrument:

Thermal expansion analysis

Test basis:

Sample requirements: sample size Φ 12mm (max) × 25mm (max)

Remarks: temperature range: room temperature ~ 1500 ° C

Test parameter specific heat

Test category physical performance

Instrument name: laser heat conduction instrument

Tel: 17611215338

E-mail address: tztczj@163.com

Trial price in person

Test cycle: 5-10 working days

Introduction to test parameters:

Specific heat capacity is short for specific heat, the ratio of the heat absorbed by a substance with a fixed mass to the product of the mass of the substance and the increased temperature when the temperature rises, is called the specific heat capacity of the substance, which is expressed by the symbol C. Function and purpose of instrument:

Measurable: 1. Thermal diffusivity, 2. Thermal conductivity, 3. Specific heat

Test basis:

Sample requirements: solid sample, opaque, diameter: 10 ~ 25.4 mm circle, or 4 × 4 and 10 × 10 mm square, thickness: 0.1 ~ 6 mm

Remarks: temperature range: RT ～ 800 ℃

Test parameter thermal conductivity

Introduction to test parameters:

Thermal conductivity, also known as thermal conductivity, reflects the thermal conductivity of materials. When the vertical downward gradient of temperature is 1 ℃ / m, the heat transferred through the unit horizontal cross-sectional area in unit time. Function and purpose of instrument:

Measurable: 1. Thermal diffusivity, 2. Thermal conductivity, 3. Specific heat

Test basis:

Sample requirements: solid sample, opaque, diameter: 10 ~ 25.4 mm circle, or 4 × 4 and 10 × 10 mm square, thickness: 0.1 ~ 6 mm

Remarks: temperature range: RT ～ 800 ℃