Corn Hybrid Polymer (CHP) Blast Media for the Removal of Coatings from Delicate Substrates

Delicate substrates are considered to be surfaces or materials on Navy platforms that are likely to be damaged by conventional or aggressive blasting abrasives and methods.

Current removal methods include chemical stripping, hand sanding and other blasting abrasive methods. These methods can release solvent vapors into the atmosphere, generate hazardous waste, and expose workers to unsafe working conditions.

Corn Hybrid Polymer (CHP) is a dry abrasive blast media propelled by lowpressure air to remove coatings from various substrates. CHP media is a crystallized cornstarch, which is re-usable, 100% organic, non-toxic, and biodegradable.

Provides acceptable stripping rate; Does not damage delicate substrates; Generates biodegradable and non-hazardous waste; Adheres to Department of Defense (DoD) environmental, pollution prevention, and toxic chemical use reduction requirements.

Naval Surface Warfare Center, Carderock Division (NSWCCD) and Concurrent Technologies Corporation (CTC) performanceormed demonstrations of CHP blast media technology for the Navy’s Environmental Sustainability Development to Integration Program at TRF Bangor, W.