Office glue test report.
1. Appearance inspection.
Appearance inspection is to inspect the appearance quality of glue, including color, transparency, impurities, bubbles, etc. According to the QB T 1961 standard, the appearance of office glue should be uniform, free of impurities and bubbles. At the same time, transparency should be high so that internal quality can be observed. Visual inspection is a key step in the initial screening of unqualified products, which can effectively avoid the occurrence of quality problems.
2. Viscosity testing.
Viscosity is an important performance indicator of glue, indicating the fluidity and adhesion of glue. Viscosity testing is measured with a viscometer to confirm that the viscosity of the glue meets the requirements of the standard. According to the QB T 1961 standard, the viscosity of office glue should be controlled within a certain range to ensure the normal application and adhesion effect of the glue.
3. pH value detection.
The pH value is an indicator of the pH of the glue, which has an important impact on the adhesion and stability of the glue. pH testing is measured using pH test paper or pH meter to confirm whether the pH value of the glue meets the requirements of the standard. According to the QB T 1961 standard, the pH value of office glue should be controlled within a certain range to ensure the adhesion and stability of the glue.
Fourth, non-volatile content detection.
The non-volatile content refers to the proportion of non-volatile substances in the glue, which is an important parameter to evaluate the quality and adhesion effect of the glue. The non-volatile content test is measured by the constant weight method to confirm whether the non-volatile content of the glue meets the requirements of the standard. According to the QB T 1961 standard, the non-volatile content of office glue should be controlled within a certain range to ensure the adhesion and stability of the glue.
5. Heat resistance test.
Heat resistance refers to the ability of a glue to maintain adhesion properties and stability at high temperatures. Heat resistance testing is performed by placing the glue in a high-temperature environment to test the adhesion and stability of the glue. According to the QB T 1961 standard, the heat resistance of office glue should meet certain requirements to ensure that it can withstand certain temperature changes during use.
6. Cold detection.
Coldness refers to the ability of a glue to maintain adhesion and stability at low temperatures. Cold testing is performed by placing the glue in a low temperature environment to test the adhesion and stability of the glue. According to the QB T 1961 standard, the coldness of office glue should meet certain requirements to ensure that it can withstand certain temperature changes during use.
To sum up, the test items that need to be carried out for the office glue test report include appearance, viscosity, pH value, non-volatile content, heat resistance and cold resistance. These testing items are the key links to ensure the quality of glue, which can effectively avoid the occurrence of quality problems. When choosing glue, you should choose office glue that has passed the test to ensure the adhesion effect and safety of use. At the same time, during use, attention should be paid to avoid the influence of temperature changes on the glue to ensure adhesion performance and stability.