Phenalkamine PPA-7151 is Mannich base. A reaction product of distilled cashew nutshell liquid & polyamine. It is an epoxy adducts solution of phenalkamine, based on suitable polyamine.
Chemical Structure :
Features :
Low viscosity
Excellent rapid cure even at low temperatures
Good chemical, solvent & water resistance
Very good compatibility with
I) Epoxy resin based on bis- phenol A
ii) Epoxy resin based on bis- phenol F
iii) Epoxy resin based on phenolic novolacs
Non-critical mixing ratio
Excellent curing under humid as well as damp conditions
Good adhesion to galvanized & mechanically cleaned surfaces
Superior corrosion resistance
Very good flexibility, to high DFT coatings, even at wide temperature changes
Workable pot life at lower temperatures
Applications :
Anticorrosive primer for galvanized surfaces with high DFT
Medium to high solid coatings
Flooring & construction
Marine & industrial maintenance coatings
Tank linings
Adhesives
Surface tolerant primers for metallic substrates
Typical Properties :
Sr. No.
Property
Unit
Specification
1
Appearance
Visual
Reddish brown viscous liquid
2
Colour
Gardner
17 max
3
Amine Value
mg KOH / g
180 - 210
4
N.V.M. (1 hr @105° C)
%
67 - 71
5
Viscosity @ 25° C
cPs
2000 - 3500
6
Density @ 25° C
g / cm3
0.99 - 1.01
7
Flash point (Closed cup)
°C / °F
33 / 91.40
8
AHEW
g/eq.
251
9
Recommended PHR (EEW –190)
--
132
Curing Properties :
Formulation :
Liquid epoxy resin ( EEW-190 )
43
Paladin PPA - 7151
57
Optimum curing schedule 7 days at 25° C
Gel Time (100g@25° C ) Mixing
30 - 40 min
B.K Drying Recorder, set time, (200 microns) 8 mil
(Liquid epoxy resin EEW - 190)
@ 25° C
1 - 2 hrs
@ 5° C
6 - 8 hrs
@ 0° C
10 - 12
Storage & Stability :
Hardener PPA -7151 should be stored in a cool dry place at 18 - 25°c in the sealed containers to achieve shelf life of minimum one year. Product can react with moisture & carbon dioxide in the air. This may result in increased viscosity & reduced activity.
Handling Precaution :
May be harmful if ingested or absorbed through the skin & can cause sensitization. Will cause severe inflammation in contact with eye & skin. Wash thoroughly after handling. Adequate ventilation is essential during application. Containers should be tightly closed when not in use or during transportation. Do not inhale mist or vapours. It is recommended to use gloves, safety glasses & protective clothing for safe handling.
First AID :
In case of Inhalation : Remove to fresh air & give oxygen if breathing is difficult Ingestion : Give plenty of water. Do not induce vomiting. Contact a physician Contact with Eyes : Flush eyes with plenty of clean water for at least 15 minutes Contact with skin : Immediately wash with mild soap & water
