NASA NTRS · 19940000466
Self-Calibrating, Variable-Flow Pumping System
Abstract
Pumping system provides accurate, controlled flows of two chemical liquids mixed in spray head and react to form rigid or flexible polyurethane or polyisocyanurate foam. Compatible with currently used polyurethane-based coating materials and gas-bubble-forming agents (called "blowing agents" in industry) and expected to be compatible with materials that used in near future. Handles environmentally acceptable substitutes for chlorofluorocarbon foaming agents.
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Walls, Joe T.. 1994-08-01. Self-Calibrating, Variable-Flow Pumping System. https://ntrs.nasa.gov/citations/19940000466
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