DOWSIL™ EP-5518 Powder by Dow is a stress relief additive for epoxy compounds. It is a silicone elastomer powder cross-linked with dimethyl polysiloxane. It can provide good optical performance balance of transmittance, haze as well as diffusion effect. It can be applied into twin screw extruder compounding process by pre-blending with the resin pellets or resin powder. It is applied 1% of the total mass of the epoxy composites formulation. It is used in light diffuser for plastic cover of LED lighting and for backlight module of LCD displays. The shelf life of DOWSIL™ EP-5518 Powder is 27 months.
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