Uneven mixing of structural adhesive, white tape will appear in the two part gluing machine. It's easier to see when the light is brighter. The uneven mixing and mixing evenly, figure: structural adhesive is not mixed evenly, what will happen? Decreased structural adhesive strength after curing, curing incomplete, serious when will be sticky, not curing.
黄大仙精选资料二四六 The two-component silicone rubber structure is composed of main agent A component (glue) and curing agent B component (black glue), glue machine by two components, according to the manufacturer's recommended mixing ratio after use. The structural adhesive after mixing has been cured for a period of time and finally obtained good adhesion and physical properties. However, if the structural adhesive mixture is not uniform, the structural adhesive will be cured and quality problems will arise.
Mix uneven structural adhesive in the following four situations and the reasons are as follows:
It is continuous: General mixer block, mixing unit assembly error or use enough;
黄大仙精选资料二四六 The law relating to it: intermittent system fault, such as the ratio of pump seal leakage or shelf wear ratio;
The intermittent of it: and the fault, such as filter clogging / needle clogging / trouble / pressure plate proportioning pump entrance blocked or seal failure / safety valve and high pressure ball valve failure;
黄大仙精选资料二四六 The gun and shot after a brief stop at the beginning, it is mainly a: viscosity, not ideal, need to adjust or reduce work pressure pipeline system.
黄大仙精选资料二四六 The above four cases appeared it are solved by gluing machine fault elimination.
黄大仙精选资料二四六 Make sure the glue machine can work properly. Butterfly test must be done before each turn on to ensure that the structure is well blended.
Butterfly test methods are as follows: will play the machine to play a good mix of glue squeezed to the middle of the paper 5-10 grams, folded paper will glue flat. Open the paper, check the glue sample, and mix the glue evenly. There should be no color stripes. If the glue appears in different stripes, it shows that the mixture is not uniform. The reason should be found and the problem can be solved.
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