The seam yellowing

The seam the cause of the yellowing

1. Epoxy resin is not qualified enough

if the purity of epoxy resin, its internal will have a lot of chemical impurities. This kind of impurities in the process of curing could not only reflect the harmful gas, threatening the seam and the owner's health, the residue after curing may also cause the seam products use of yellowing condition soon.

2. Curing agent is unqualified

curing agent as the seam curing bridge, if there is a disproportionate, quality is not qualified, will be a great influence on the joint product of curing. Curing agent ratio, the seam products is likely to be after curing period will not dry. Seam curing agent is unqualified, the quality of the products will send out the bad smell, not only in the curing also by ceramic tile inside, the influence of various impurities in the air and yellowing.

3.

to stable curing environment before curing epoxy resin is relatively weak, it at the time of the curing reaction needs to be stable in a relatively dry environment. If midway in curing water vapor intrusion, temperature mutations, etc. , will affect the epoxy resin curing speed and quality. In this state cured epoxy resin, the state itself is not too stable, nature also will speed up the yellowing.

so when choosing the seam an agent, to choose the brand of environmental protection product, not only the quality guaranteed, after-sales service is perfect enough.