Author - upwelltest

Thermo Gravimetric Analyzer

The Influence Of Atmosphere On The Analysis Of Thermo Gravimetric Analyzer

Thermo gravimetric Analysis measures the relationship between sample weight and weight change rate with temperature in a program controlled temperature and an atmosphere. Generally used to determine the decomposition of the sample and the stability of the material. It can also be used to determine the weight change of the sample in the process of decomposition, oxidation, dehydration, and adsorption.　　The basic principle of the thermo gravimetric analyzer is that the balance displacement caused by the sample weight change is [...]

2021-11-16 By News , Read more...
Differential Scanning Calorimeter，DSC

Application and Experienceof Differential Scanning Calorimetry DSC In Polymer Material Research

1 The working principle of differential scanning calorimetry (DSC)Differential Scanning Calorimetry (DSC) is a thermal analysis method developed after the 1860s. It is a method of measuring the relationship between the power difference input to the sample and the reference material and the temperature under the control of the program temperature. Kind of technology [1,2]. The accuracy of this change in measurement difference is higher than the measurement of the absolute value of heat flow or power [3]. Its [...]

2021-11-10 By News , Read more...
180 degree peeling testing machine

180 degree peel testing machine Installation details

The peeling force tester is suitable for the peeling of food plastic packaging, daily cosmetics plastic packaging, adhesives, adhesive tapes, stickers, medical patches, protective films, composite films, artificial leather, woven bags, films, paper and other related products. It can be used for professional equipment for QS certification of food packaging for performance testing such as pull-off. What kind of preparations do you need to do before installation of the 180-degree peel force testing machine? Today, we will provide you [...]

2021-11-01 By News , , Read more...
Thermo Gravimetric Analyzer

EXPERIMENTAL FACTORS AFFECTING THERMAL ANALYSIS MEASUREMENT

Today we are discuss the factors affecting thermal analysis measurement when you do the test  The influence of heating rate on the results of thermal analysis experiments TG Analyzer，DSC The heating rate has a very obvious influence on the results of the thermal analysis experiment. Generally speaking, it can be summarized as the following points. 1) For a certain reaction (such as thermal decomposition reaction) of the sample represented by the curve of TG (thermogravimetric analyzer), DTA (differential thermal analyzer) or DSC (differential [...]

2021-10-11 By News , Read more...

What is MFI mean in plastic testing area

MFI is abbreviated as melt index, also called melt flow rate, It is a numerical value indicating the fluidity of plastic materials during processing. It is formulated by the American Standards Association for Measurement and Testing (ASTM) according to the method used by DuPont to identify the characteristics of plastics. The test method is: First let the plastic pellets melt into a plastic fluid within a certain time (10 minutes), at a certain temperature and pressure (various material standards are [...]

2021-10-06 By News , Read more...

How To Improve Electronic Equipment’s Electromagnetic Compatibility

The electromagnetic interference and response process generated by any electronic device can be used to describe the source of interference (test signal generator) by radiation and conduction, and the characteristics of the response receiving device can be described by radiation sensitivity and conduction sensitivity. Therefore, all electromagnetic The interference suppression method can start from the following three aspects: Suppress electromagnetic interference sources; Cut off the electromagnetic interference coupling path; Reduce the sensitivity of electromagnetic sensitive devices. EMC Testing Device ESD EFT Surge combined [...]

2021-09-29 By News Read more...
Izod impact tester

IZOD IMPACT TESTING MACHINE MAINTENANCE AND COMMON PROBLEM SOLVING METHOD

The Izod impact testing machine is a semi-automatic control testing machine with simple operation and high work efficiency. The swing, impact and placement are electrically controlled, and the remaining energy after breaking the sample can be used to automatically swing the pendulum to prepare for the next test. It is especially suitable It is used in laboratories that continuously do impact tests and metallurgy, machinery manufacturing and other industries that do a large number of impact tests. The cantilever [...]

2021-09-15 By News , Read more...

TEXTILES TENSILE BREAKING STRENGTH TESTING MECHANISM AND INFLUENCING FACTORS

(1) Test methods and indicatorsTest MethodWoven fabrics, non-woven fabrics: ripped yarn strip method, grab sample method, shear strip method Knitted fabric: trapezoidal test strip, loop test strip. When the rectangular knitted fabric sample was stretched, the stress at the jaws was particularly concentrated, causing the sample to break near the jaws.  Representation index(1) Breaking strength (N) The main index for evaluating the intrinsic quality of fabrics can also be used to evaluate the influence of washing, abrasion and finishing on the intrinsic [...]

2021-09-06 By News , , Read more...
hydrostatic pressure testing machine

Precautions For Use And Maintenance Of Pipe Hydrostatic Pressure Testing Machine

When using the pipe hydrostatic pressure testing machine, in addition to some precautions, there are also maintenance methods for the pipe hydrostatic pressure testing machine. The pipe instantaneous blasting test refers to a given section of plastic pipe sample, quickly and continuously applying liquid pressure to the inside of the sample, so that the sample ruptures in a short time. Read the pressure value when the sample is broken and calculate its hoop stress. The pressure control system of the [...]

2021-07-29 By News , Read more...

Melt Flow Index Tester Working Principle

Melt index meter The flow rate meter uses a high-temperature heating furnace to make the measured object reach a molten state under a specified temperature condition. The test object in this molten state is subjected to an extrusion test through a small hole of a certain diameter under a prescribed weight load. In the research of plastic production and scientific research units of industrial enterprises, the “melt (mass) flow rate” is often used to express the fluidity, viscosity and [...]

2021-07-12 By News Read more...