FANGRUI instrument QBZY-1 interfacial tension instrument, test range 0~600mN/m

Introduction

Surface tension is an essential element in determining the properties of liquids such as solubility, wettability, foamability, coating and permeability. Surface tension analysis is often performed on a given liquid to study how that liquid behaves physically relative to other liquids or solids. And this kind of research is the basic means of quality control in the process of industrialization. FANGRUIs QBZY-1 Surface Tensiometer is a professional-grade interface chemical analysis instrument specially developed to meet the user's demand for high-precision control of R&D and quality in the process of interface chemical testing.

QBZY-1 Surface Tensiometer has won a new national patent, patent number: 2011200652242

main feature

1) The two test methods of platinum plate and platinum ring are used together (the platinum ring method needs to be purchased separately) ;

2) Fully automatic measurement, when the platinum plate is tested, the displayed value is the surface tension value;

3) When using the platinum ring test method, the displayed value automatically locks the maximum force value of the sample, and then calculates the surface tension value through the included calculation software or selects data processing software to be automatically calculated by the computer;

4) Platinum ring size: the wire radius is 0.185mm, the ring radius is 9.55mm, and the ring circumference is 60mm;            

5) Fully automatic measurement to avoid human error;

6) Full-scale automatic calibration, accurate and reliable data, excellent repeatability;

7) One-key reset, complete in an instant, the zero position is stable without drift;

8) Adopt international professional lifting platform drive technology, no vibration and noise;

9) The instrument has a reasonable structure and works independently without any additional equipment (such as an external computer, etc.), and can also be equipped with a computer for data processing;

10) When using a platinum plate, it can measure the surface tension of the liquid in real time. It is very practical for measuring samples containing surfactants or volatile substances whose surface tension will change with time (select data processing software, you can Record the test curve in real time, and get the details of the change clearly);

11) When using a platinum plate to test, it can automatically test the surface tension of medium and high viscosity liquid samples;

12) The two test methods can measure the interfacial tension between immiscible liquids such as: oil/water interface;    

13) Data processing software: automatically collect test curves, the curves can be automatically enlarged, accessible and printed. Can compare multiple test curves, and can automatically calculate the surface tension value when using the platinum ring method; 

14) Accuracy calibration function: with twice distilled water and pure ethanol as the standard, the overall test error of the instrument is automatically calibrated, which can ensure that the instrument is in the accurate state when it leaves the factory for a long time; 

15) Automatic temperature compensation function: with twice distilled water and pure ethanol as the standard, it automatically summarizes the test values ​​at 20°C for samples at different temperatures;

16) A variety of temperature control options are attached to meet different test requirements;

Instrument structure

Component description: The Surface Tensiometer is mainly divided into three parts according to the operation process

First, the sensing part mainly refers to the upper part of the instrument;

Second, the control part mainly refers to the middle and lower parts of the instrument;

Third, the display and button part, mainly refers to the lower part of the instrument.

The items listed in the above components refer to:

1. Surface Tensiometer host;

2. Adjust the feet horizontally;

3. Setting value display

4. Spirit level (bubble calibrator)

5. Switch, tare, correction key, mode key

6. Liquid crystal display (displays the measured value part)

7. Main control buttons

8. Automatic lift sample stage

9. Hook and platinum plate

10. Perspex door

11. Constant temperature water pipe hole

Detection principle

Platinum plate method

When the sensing platinum plate is immersed in the measured liquid, surface tension will be applied around the platinum plate, and the surface tension of the liquid will pull the platinum plate down as far as possible. When the surface tension of the liquid and other related forces and balance forces are balanced , the sensing platinum plate will stop immersing into the liquid. At this point, the instrument's balance sensor measures the depth of immersion and converts it into a value for the surface tension of the liquid. In the specific test process, the test steps of the platinum plate method are:

(1) Gradually immerse the platinum plate into the liquid;

(2) In the state of being immersed in the liquid surface, the balance value is sensed by the sensor;

(3) Convert the sensed balance value into surface tension value and display it.

Platinum Tour de France

This method is also known as the du Nouy method because it is widely used in du Nou tensiometers, and is widely used because of its ease of operation . The Platinum Ring method is so called because a ring is formed between the test part and the liquid sample . The measurement method of the platinum ring method is:

(1) Gently immerse the platinum ring in the liquid;

(2) Then slowly lift the platinum ring up about 5mm to 6mm, that is, the liquid level drops relatively, so that a liquid column is formed under the platinum ring , and finally separates from the platinum ring. The platinum ring method is to sense a highest value, and this highest value is formed when the platinum ring and the liquid sample are close to each other. The accuracy with which this highest value is converted to a surface tension value depends on the viscosity of the liquid.

Application

- Ink, printing ink, paint industry: analysis of wettability of printing/coating process, product development and quality control

- Printing industry: development of screen cleaning solution and wettability analysis, film wettability analysis

- Film industry: wettability analysis, quality control

- Detergent industry: analyze the absorption speed and properties of surfactants, and study the appropriate concentration

- Chemical aid industry: research on aggregation and diffusion behavior

- Cosmetics industry: analysis of dispersion, stability and wettability of emulsions or suspensions

- Electroplating industry: analysis of surface tension of electroplating solution, quality control

- Pesticide industry: additive development, formulation, wettability analysis

- Research on nanofibers and powders: fiber contact angle/hydrophilic angle analysis, dynamic contact angle analysis

- Petroleum industry: Characterization of interfacial tension in tertiary oil recovery, quality control of oil flooding, analysis of degradable components

- Textile industry: contact angle analysis, dye wettability, surface tension, adhesion analysis

- Medicine, food industry: surface tension, wettability analysis, can coating surface tension, cleanliness analysis

- Electric power industry: Transformer oil, insulating oil surface tension analysis, fiber bundle contact angle analysis

Pictures

Host * 1, platinum sheet * 1, forceps * 1, calibrated block * 1, extension hook * 2, Glass culture dish * 2 sets, tray * 1, alcoholburner * 1, power cord * 1, manual/certificate/warranty card * 1 copy each

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.