Adhesive is a common adhesive material, which is widely used in various fields, including construction, automotive, aerospace, electronics, textiles, etc., due to its strong viscosity, ease of use, and low cost. Adhesives are usually composed of matrix, thickener, adhesive, additives and other components, and their main function is to bond different materials together to achieve effects such as fixing, strengthening or decoration. There are different types and properties of adhesives, and the selection of a suitable adhesive can be determined according to the needs of specific applications.
Detection performance
Adhesive is a commonly used adhesive material. It is necessary to detect the following important performance parameters, which are very important for the production and use of adhesives. The following is the detection performance parameter table:
| performance parameter | Test Methods |
|---|---|
| Adhesive strength | Shearing test, tensile test, peeling test, etc. |
| construction performance | Observe the coatability, uniformity and ease of coating of the adhesive, etc. |
| curing time | Observe the curing time of the adhesive |
| water resistance | Measuring the durability of adhesives in water |
| weather resistance | Measuring the durability of adhesives under different climatic conditions |
| viscosity | Measuring the fluidity of adhesives |
| Environmental performance | Detect the content of environmental pollutants such as harmful substances and volatile organic compounds in adhesives |
Detection method
The following is a detailed description of the testing methods for the various performance parameters of the adhesive:
Adhesive strength: measure the adhesive strength of the adhesive sample, which can be tested by shear test, tensile test, peel test and other methods to evaluate the adhesive strength between the adhesive and different materials.
Construction performance: Observe the coating performance, uniformity and ease of coating of the adhesive during construction, and test the construction performance by evaluating the appearance and quality of the coating.
Curing time: Observe the curing time of the adhesive coating, and you can judge whether the coating has been cured by touching, scratching, etc.
Water resistance: To measure the durability of the adhesive in water, it can be tested by immersion test and other methods to evaluate its water resistance.
Weather resistance: To measure the durability of the adhesive under different climatic conditions, you can use methods such as damp heat test, salt spray test, and light test to evaluate its weather resistance.
Viscosity: To measure the fluidity of the adhesive, it can be tested with equipment such as a Rotational Viscometer to evaluate its viscosity and fluidity.
Environmental protection performance: To detect the content of environmental pollutants such as harmful substances and volatile organic compounds in adhesives, various chemical analysis methods can be used for testing, such as gas chromatography, liquid chromatography, etc.
Precautions
When testing, you also need to pay attention to the following issues:
Sample preparation: Sample preparation needs to be carried out in accordance with relevant standards or methods to ensure that the sample preparation process and conditions meet the requirements.
Experimental conditions: When performing various performance tests, it is necessary to control the experimental conditions, such as temperature, humidity, pressure, etc., to ensure that the experiment can be repeated
repeatability and accuracy.
Test accuracy: For some performance parameters, such as bonding strength, the test accuracy will be affected by many factors, such as sample preparation, experimental conditions, test equipment, etc., and attention should be paid to controlling these factors to improve test accuracy.
Data analysis: After completing various tests, it is necessary to conduct statistics and analysis on the test data to determine the performance characteristics of the adhesive and evaluate its quality level.
To sum up, the performance testing of adhesives requires the use of different testing methods and standards, and for some complex tests, professional laboratories or technicians are required. It is necessary to pay attention to the above problems when conducting the test to ensure the accuracy and reliability of the test results. At the same time, when using adhesives, you should also pay attention to operating in accordance with the instructions to ensure better adhesion and safety performance.
