Physical property test
Bond strength: This is a key indicator to measure the quality of glue. It can be tested by tensile test, shear test, and other methods. According to relevant standards, the ceramic sheet bonded by glue is stretched or sheared with the substrate, and the maximum force value at the time of destruction is measured and converted into bond strength. Generally speaking, the shear strength of good quality glue should not be less than 15MPa at room temperature when steel-ceramic bonding.
Hardness: Appropriate hardness helps the glue maintain good performance in wear-resistant applications. It can be measured by tools such as Shore hardness tester. Generally, the hardness of wear-resistant ceramic lining glue is ideal between Shore D 70-90. Too hard or too soft may affect its wear resistance and impact resistance.
Flexibility: Evaluated by bending test or flexibility tester. Paste the ceramic sheet coated with glue on the flexible substrate, then bend it to observe whether the glue cracks or falls off. High-quality glue can still maintain good bonding state under a certain degree of bending deformation, showing good flexibility and being able to adapt to slight deformation of the equipment during operation.
Chemical performance test
Practical application test
Simulated working condition test: According to the actual working conditions of the equipment, such as the material flushing speed, particle size, temperature, humidity, etc., a similar working condition environment is simulated in the laboratory, and the test pieces with ceramic sheets are tested. Observe the wear resistance and bonding performance of the glue under the simulated working conditions. If the ceramic sheet can remain firmly bonded for a long time under the simulated working conditions, and the glue has no obvious wear and damage, it means that the glue quality is good.
Long-term use tracking: For the glue that has been used in the actual equipment, long-term tracking observation is carried out. Understand its durability, reliability, etc., during actual operation. The quality of the glue is comprehensively evaluated by regularly checking the bonding state of the ceramic sheet and the wear of the glue. If the ceramic sheet is still firmly bonded after long-term use and the glue has no obvious failure phenomenon, it means that the quality of the glue is reliable.
Quality certification and test report
Quality certification: Check whether the glue has passed relevant international or domestic quality certifications, such as ISO 9001 quality management system certification, ISO 14001 environmental management system certification, etc. These certifications indicate that the manufacturer follows certain standards and specifications in the production process, and the product quality is guaranteed to a certain extent.
Test report: The manufacturer is required to provide a test report issued by an authoritative third-party testing agency. The report should include the test results of various performance indicators of the glue, such as bonding strength, hardness, corrosion resistance, high temperature resistance, etc. The test report can intuitively reflect the quality level of the glue and ensure that it meets relevant standards and usage requirements.
