Powder fiber glass chopped strand mat for epoxy resin

Determine the glass transition temperature of binder right, choose the appropriate way of toughening, plasticizing, only the adhesive strength enough in itself, namely the cohesive energy reaches a certain level to ensure the chopped strand mat of bond strength.

If the adhesive is poor, it is often inconvenient for the winding and subsequent operation. If the chopped strand mat is too brittle, the strength will drop, and the link between the glass fiber  chopped strands will lose its strength due to the resin fracture. Especially the hand paste process chopped strand mat, causing the prodding hand, not easy to tear the phenomenon, all to the worker operation bring inconvenience.
Epoxy resin powder adhesive
Epoxy resin powder binder has the advantage of high decomposition temperature,  the chopped strand mat  after 220 ℃ baking, epoxy powder does not decompose, and powder melt viscosity is low, easy wetting glass fiber strand, adhesion, color light.
The disadvantage is that the epoxy resin itself is brittle and big, causing the bonding point to break and the tensile strength of the felt film is low. Therefore, epoxy adhesive is often added to epoxy curing agent to ensure the bond strength.
Epoxy powder reinforcing agent after high temperature baking solidification, forming a polymer network structure, insoluble in styrene, so it is suitable for the use of continuous  chopped strand mat  products.