Hardener

The sulfonic acid curing agent for casting resins is a liquid curing agent produced by sulfuric acid sulfonation and subsequent separation of benzene, toluene, and xylene. This product appears as a brownish-red or brownish-transparent liquid, free from any visible insoluble particles under the naked eye. It should remain completely free of crystallization at temperatures above -15°C.

Keywords: Furan Resin

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Product Introduction

Product Performance
  The sulfonic acid curing agent for casting resins is a liquid curing agent produced by sulfuric acid sulfonation and subsequent separation of benzene, toluene, and xylene. This product appears as a brownish-red or brownish-transparent liquid, free from any visible insoluble particles. It should remain completely clear without crystallization even at temperatures above -15°C.

Product Applications
  The sulfonic acid curing agent for casting resins is widely used to cure and shape various types of resins, such as furan and phenolic resins, under diverse temperature and humidity conditions. This product boasts rapid curing speed, a straightforward molding process, and excellent sand disintegration properties, making it ideal for meeting the demands of a wide range of molding techniques.
Product Technical Specifications

Project Metrics
QYFN-A QYFN-B QYFN-03 QYFN-04 QYFN-05 QYFN-07 QYFN-08 QYFN-09
A B A B A B A B A B A B A B A B
Density g/cm³ (20°C) 1:20–1:40 0.9–1.2 1:10–1:30 1:10–1:30 1:10–1:30 1:20–1:40 1:20–1:40 1:20–1:40
Viscosity mPas (20°C) 50-70 10-20 10-30 10-30 10-20 40-60 50-70 40-60
Total acidity (expressed as sulfuric acid) % 38-40 44-46 8-10 13-15 24-26 33-35 18-20 25-27 12-14 17-19 25-27 38-40 32.5–35 45-47 24.5–27.5 41-43
Free Sulfuric Acid % 10-15 20-25 0-1.5 4-7 7-10 20-24 0-1.5 12-16 0-1.5 7-Eleven 25–45 15-20 7-12 20-25 25–45 18–22
Applicable Season   Spring and Autumn Summer Summer Winter Winter Winter
  A reddish-brown or brownish transparent liquid, free of any visible insoluble particles; no crystallization should occur above -15°C.

Packaging
  25 kg, 250 kg, 1000 kg

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