Title: Curing Emissions of New Ultra Low Free Formaldehyde Phenolic Resins for Composite Applications
Authors: J. Frank Ludvik, Alexander D. Muzzillo, Jason S. Lee, Ramji Srinivasan, Dexter Johnson, Chris B. Mielke"
Abstract: Phenolic resins play an important role in the engineering and design of materials requiring lightweighting, corrosion resistance, strength and durability. Their inherent fire resistance, high mechanical strength and ability to withstand high temperature environments have long made them a key element of composite innovation.
Phenolic resins used for industrial applications, such as abrasives, filtration, honeycomb, foaming, etc., historically contain free formaldehyde levels ranging from 0.3 % to greater than 1.5%.
Environmental considerations are influencing fundamental changes in phenolic resin technology and manufacturing, specifically targeting the lowering of residual free formaldehyde and free phenol monomer content. Resin manufacturers are seeking to respond to their customers’ and markets’ requests to reduce volatile organic compounds (VOCs) while maintaining resin performance features, advantages, and benefits. An innovative line of Ultra Low Free Formaldehyde phenolic resins with less than 0.1% free formaldehyde content (below 1000ppm) has been developed.
Data on the effect of this ultra low free formaldehyde content on curing emissions and thermal performance, compared to the curing emissions and thermal performance of standard phenolic resin, will be presented as a function of standard lab testing as well as data obtained under actual manufacturing conditions. Additional data showing the effect on phenol emissions will also be reviewed.
References:  “NPFC- MIL-64154 Laminate: Fiberglass-Fabric-Reinforced, Phenolic, https://standards.globalspec.com/std/471081/mil-l-64154, Engineering360 Standards Library  Maldonado, C., Ludvik, F., Srinivasan, R. “A Break-through Technology Reducing Residual Formaldehyde in Phenol-Formaldehyde Resins” Presented at CAMX 2020, Virtual, September 2020. Nomex is a trademark owned by Dupont Safety & Construction, Inc.
Conference: CAMX 2022
Publication Date: 2022/10/17
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