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.
After a period of time curing, the mixed structural adhesive has good bonding and physical properties. However, the quality problem will occur when the structural adhesive is used after the mixing is not uniform.
The glue machine should be maintained regularly to ensure that the glue machine can work properly. The butterfly test must be done every time before the machine is opened to ensure that the structure is mixed evenly.
The method of the butterfly test is as follows: the mixture of good glue produced by the glue machine is squeezed to 5-10 grams in the middle of the paper, and the glue is flattened by the paper. When opening the paper, check the glue sample, the even mixed glue should have no color stripe. If the glue appears the color stripe, it indicates that the glue is not uniform. We should find out the reason and solve it.
The mixing of structural adhesive is not uniform. How to distinguish it? The mixing of the structure glue is not uniform, and the white stripe will appear in the part. It is easier to observe when the light is brighter. The situation of mixed inhomogeneous and mixed uniformity:
What are the reasons for uneven mixing of structural adhesives? How to solve them? There are four conditions and reasons for the inhomogeneous mix of structural adhesives
It is continuous: General mixer block, mixing unit assembly error or use enough;
The law relating to it: intermittent system fault, such as the ratio of pump seal leakage or shelf wear ratio;
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