Hubert Monteiro Phenalkamine Presentation
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Transcript of Hubert Monteiro Phenalkamine Presentation
© 2004. Royce International USA
Royce INTERNATIONALPresents
PHENALKAMINES(APPLICATIONS AND ADVANTAGES)
presented byDr. Hubert Monteiro
COMMITTED TO YOUR SUCCESS……SINCE 1929
I. CASHEW NUT SHELL LIQUID (cnsl)
• Key ingredient in the manufacture of Phenalkamines• The industrial applications of the shell oil are based upon its
polymerization to a rubber-like material under the influence of acids, and on the formation of a wide range of condensation products with aldehydes. The latter are generally hard, infusible and extremely resistant to the action of chemicals such as acids and alkalis. The cashew shell liquid is now used in the manufacture of brake liners, paints, varnishes, lacquers and insulators.
II. Structure of phenalkamine
H27C15
OHCH2-NH-CH2-CH2-NH-CH2-CH2-NH2
III. Typical Properties OF PHENALKAMINES
RA 951(K 541)
RA 950(K 540)
Appearance Reddish brown viscous liquid
Reddish brown liquid
Color (Gardner) 17 17
Density (lbs/gal) 8.23 8.27
Solids content (1 hr @ 1050C) >95% >96%
Viscosity @ 250C (cPs) 35000 2500
Amine value (mg KOH/g) 320 520
Active hydrogen equivalent weight 130 81
Flash Point 630C 1070C
Recommended PHR* 65 - 75 35 - 45
Gel Time @ 250C * (100 g) (minutes) 35-85 30-55
Thin Film Cure Time* @ 750F (hours) @ 420F (hours)
9-1417-22
9-1119-22
* with liquid epoxy resin of EEW 190
IV. ADVANTAGES OF PHENALKAMINES • Solvent-free / VOC compliant• Long pot-life• Fast-drying for quick recoat• Cure below 400F (50C)• Cure in all seasons under damp/humid conditions• Good adhesion to most surfaces (RA 950 to plastics)• Low toxicity• No induction period• Non-critical mixing ratios• Compatible with coal tar and with most solvents• Outstanding resistance to water, even sea water• USDA acceptance• RA 951 DOT non-corrosive
V. CURING OF EPOXY RESINS AT 270C
Curing of Epoxy Resin with various Hardeners at 27 Degrees Centigrade
0
20
40
60
80
100
24 48 72 96
Hours
Polyamide
Amidoamine
Reactive Amine
DETA
Hardener K 540
Hardener K 541
VI. CURING OF EPOXY RESINS AT 40C
Curing of Epoxy Resin with various hardeners at 4 Degrees Centigrade
0
20
40
60
80
100
24 48 72 96
Hours
Polyamide
Amidoamine
Reactive Amine
DETA
Hardener K 540
Hardener K 541
VII. WATER RESISTANTCE OF PHENALKAMINE CURED SYSTEMS
0.000.200.400.600.801.001.201.401.601.802.002.202.40
% Weight Change
25 65
Immersion Temperature (Degrees Centigrade)
Water Absorption of Phenalkamines Vs. other Hardeners
RA-950
RA-951LV
POLYAMIDE
CYCLOALIPHATIC
MANNICH BASE
VIII. LIMITATIONS OF PHENALKAMINES
• Dark color• Shelf life of 6 months• Slight tendency to blush• Moderate chemical resistance• Poor solvent resistance
IX. Applications of Phenalkamines
• Marine Paints
• Industrial Maintenance Protective Coatings
• Tank and Pipe Linings
• Coatings for Potable water Applications
• Primers for Concrete
X. STRUCTURE OF CARDANOL GLYCIDYL ETHER (RA-913)
C15H27
O-CH2-CH-CH2
O
XI. TYPICAL PROPERTIES OF RA-913
Appearance : Clear brown liquid
Color (Gardner) : Max. 13
Viscosity at 250C : 50 cPs
Epoxide equivalent weight : 455 – 555
Specific Gravity at 250C : 0.98
Volatile Matter (1200C / 1 h) : Max. 2
Flash Point : >2000C
Storage Stability : 6 months
XII. ADVANTAGES OF RA-913
• Viscosity Reduction: A 50% reduction in viscosity is obtained with a 10% addition of RA 913.
• Very low volatility
• Increased Flexibility: Improved Impact and Thermal Shock Resistance with little effect on Hardness.
• Compatibility: Compatible with usual epoxy resin and hardener systems and with low cost hydrocarbon solvents.
• Increased pot-life: Extends pot-life without increasing total cure time.
• Electrical Properties: Does not affect electrical properties of epoxy resin system with addition up to 15 phr.
• Dimensional stability: Reduces internal stress and improves flexural modulus which results in a great improvement in the dimensional stability of a cured product.
XIII. VOLATILITY OF REACTIVE DILUENTS
Volatile Contents of Diluents
0369
12151821242730
100 30 20 10
Percent Diluent in Lapox B-13
Per
cent
Vol
atile
BGE
Epoxide 7
CGE
BDGE
RR-913
XIV. LIMITATIONS OF RA-913
• Dark color
• Shelf life of 6 months
• Slight tendency to blush
• Moderate chemical resistance
• Poor solvent resistance