Why is there a structural epoxy adhesive layer that does not solidify, solidify slowly or solidify after different degrees of hardness?

Reason:

(1) the proportion of mismatching is not correct (the dosage of curing agent is not enough) or the wrong material is added.

(2) uneven agitation of glue liquid.

(3) construction or curing environment temperature is too low, humidity is too large, the choice of rubber species is incorrect.

(4) the storage condition of the product is poor or the storage time is too long.

Solutions and matters of attention:

(1) Adhesives must be weighed proportionally and correctly; diluents must be prohibited on the construction site; special persons are responsible for the preparation of adhesives and technical training on the construction site.

(2) The standardization of the mixing process, the personnel need special training; it is recommended to use a wide mouth container with glue, the edge of the container and the bottom glue must be fully stirred, and the glue should be poured back and forth between the two containers when the amount of glue is large or the glue container is deep, so as to ensure the uniformity and uniformity of the liquid.

(3) Abide by the relevant state regulations, avoid construction under low temperature and high humidity as far as possible; choose the glue suitable for the temperature of the construction; add temperature and heat treatment to the reinforced component; add temperature treatment to the liquid before construction or cure the prepared liquid.

(4) After the operation of the product, we should pay attention to seal and use in the shortest time; A and B two groups of glue dispenser to avoid mixing; before construction, a simple field dispensing test is carried out to ensure the normal curing of the liquid.