Chinagrate Phenolic Resins
Phenolic resin is classified as a condensation reaction polymer. In this
type of reaction, the polymer grows by combining two large molecules and
releasing a third small molecule, usually water. Depending on the product
formulation, either a novolac or a resole resin is produced. Novolacs are
designed to incorporate a curing agent, such as hexamethylenetetramine,
and are referred to as two-stage, which employs an acid catalyst. Resoles
require no curing agent and because of the one component characteristic
of this resin are therefore referred to as single-stage, which employs an
alkaline catalyst.
A wide range of characteristics can be designed into a phenolic resin. Reactivity,
moisture content, molecular weight, pH, monomer level, viscosity, flow,
lubricity, and particle size all may determine the suitability of a resin
for a particular application. Through the controlled selection of formulation
options, manufacturing parameters, cure promoters, lubricants and other
additives, our phenolic gratings are optimized to meet the needs of our
customers.
Chinagrate uses novolac resins in our phenolic molded gratings, and resole
resins in our phenolic pultruded gratings.
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