Spraycore MR-100 Blowing Agent

Description

The Spraycore MR-100 blowing agent is a chemical foaming additive used to lower the gel time and density of sprayable syntactic materials. Blended into Spraycore coring and barrier-coat resins, it expands the mix during cure so the finished layer builds thickness with less material weight. It is a specialty product from ITW Performance Polymers used mainly in composite and boat-building lay-ups.

Where the Spraycore MR-100 blowing agent is used

Composite fabricators add the Spraycore MR-100 blowing agent to sprayable core and print-blocking systems where a lighter, faster-gelling layer is the goal. The foaming action helps the applied material reach the target build in one pass and reduces overall part weight, which matters on hulls, decks, and large molded panels. Tuning the dose lets a shop balance how fast the layer gels against how much it expands, so the same base resin can serve thin and thick sections.

How the Spraycore MR-100 blowing agent is handled

The product is a yellow liquid additive carrying NFPA and HMIS health and flammability ratings of 2, so standard solvent-handling precautions apply during metering and mixing. It is supplied in a pail for shop-floor dosing into the base resin. Follow the Spraycore system data sheet for the correct addition rate to hit the gel time and density you need. Because the additive changes both reactivity and final weight, a small test batch before a production run confirms the rate against shop temperature and spray equipment.

Specifications

Order this additive to tune the gel time and density of a Spraycore lay-up. For related coating chemistries, browse our coatings category, and see the full Spraycore range at ITW Performance Polymers.

Need Help?

Need help dialing in an addition rate for your Spraycore system? Call (800) 220-1966 or email [email protected].