The addition of fillers in adhesives serves the following functions:
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(1) Increase the cohesive strength of the adhesive;
(2) Adjust viscosity or processability (such as thixotropy);
3) Improve heat resistance;
(4) Regulate the coefficient of thermal expansion or shrinkage;
(5) Enhance the fillability of gaps;
(6) Impart electrical conductivity;
(7) Reduce the cost;
(8) Improve other properties.