Construction glue selection basis

(1) Good low permeability;

(2) Good construction performance of embedded filling;

(3) Compatible with the joint substrate, no pollution, and stable bonding;

(4) Cohesive failure does not occur during force deformation;

(5) There is no excessive permanent deformation, no softening or stickiness, no hardening and excessive embrittlement under the use temperature;

(6) It is resistant to aging and weather under the conditions of use, and has a reasonable service life;

(7) The displacement ability meets the requirements;

(8) The structural bonding displacement capacity (%) and the modulus strength are reasonably unified.