Low profile additives are thermoplastic polymers which are added to glass or polyester composites during the production process of composites for enhancing the surface finish and to shun the contraction. Composites tend to experience soaring contraction in the volume at the polymerization stage of unsaturated polyester resins. This ultimately results in meager surface appearance and also leads to internal voids and cracks. The mixture of low profile additives are and unsaturated ... Read more

Low profile additives (LPA) are compounds added to unsaturated polyester resins or vinyl ester resins to reduce the gel time and exotherm temperature of the resins during curing. LPAs enable resins to form a network structure with low free volume, which leads to lower shrinkage during hardening. They find wide application in applications where dimensional stability is required such as large industrial tooling, fixtures, wind turbine blades, pipes, etc. Rising demand for composites from end- ... Read more