ARALDITE® DY-31

Due to their structure, reactive diluents have low viscosity. ARALDITE® DY 31 is a polymer.

The incorporation of ARALDITE® DY 31 has the following effects:

• A reduction of viscosity when used in a Standard Epoxy resin
• High reactivity is maintained (potentially increased)
• Practically no reduction of hardness
• A slight decrease of warm water resistance
• A slight reduction of acid resistance
• High resistance to solvents and ammonia
• The best diluent for Glass Transition retention

The reactive diluent in the resin component should not exceed 20%.

Unmodified bisphenol-A and bisphenol-A/F epoxy resins - such as ARALDITE® GY 250, GY260, GY 261, GY 266, PY 302-2 or PY 304 - are mixed with ARALDITE® DY 31 to produce low-viscosity epoxy resins for solvent-free coatings, flooring compounds and Adhesive/mastics.
ARALDITE® DY 31 should preferably be used when reactivity, hardness and resistance to warm water, solvents and ammonia are to be maintained.

• 100% Solids chemical resistant coatings
• Concrete crack repair
• Coatings for containment areas
• High-performance adhesives

The larger epoxy content of ARALDITE® DY-31 vs. ARALDITE® DY-T leads to a different ratio between resin and hardener resulting in a higher glass transition temperature and a lower elongation at break.

ARALDITE® epoxy resins fully cured with IPDA based hardener ARADUR® 20315 mixed at stoichiometry I Cure profile: 1 h at 80°C + 1 h at 120°C + 1 h at 150°C

Comparison of ARALDITE® DY 31 with ARALDITE® DY-T: Mechanical properties when fully cured with ARADUR® 20315. Resin + hardener mixed at stoichiometry Cure profile: 1 h at 80°C + 1 h at 120°C + 1 h at 150°C Epoxy content of ARALDITE® DY 31 being higher than ARALDITE® DY-T leads to a different ratio between resin and hardener leading to a Higher Tg and a lower elongation at break. Other parameters are very similar.

             

Size of Bubble proportional to resin viscosity (mPa.s)

ARALDITE® DY-31 high-performance reactive diluent
Reduce viscosity of a standard Epoxy resin while maintaining Tg of the formulations, mechanical and chemical resistance properties. CMR-free

Dilution without sacrificing functionality nor hydrophobicity

Size of Bubble Viscosity (mPa.s)

Size of Bubble proportional to water absorption after 3 d in boiling water Name (--%)

ARALDITE® DY 31 should be stored in a dry place, preferably in the sealed original container, at temperatures between 2 and 40 °C. The product should not be stored exposed to direct sunlight.

Mandatory and recommended industrial hygiene procedures should be followed whenever our products are being handled and processed.