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Thanavala Associates
Thanavala Associates
Matunga West, Mumbai, Maharashtra
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Company Brief


Company Factsheet

Basic Information
IndiaMART TrustSeal
Nature of Business
Manufacturer
Total Number of Employees
Upto 10 People
Year of Establishment
1980
Legal Status of Firm
Sole Proprietorship (Individual)
Annual Turnover
Rs. 2 - 5 Crore
GST No.
24AAMPT5585H1Z4


Chemical Properties Of PTFE Coatings


Property
ASTM
Standard
Unit

PTFE
PTFE
FEP
PTFE
PFA
PTFE
ETFE
Chemical / Solvent Resistance
D543
-
Excellent
Excellent
Excellent
Excellent
Water Absorption 24th
D570
%
<0.01
<0.01
<0.03
<0.03
Salt Spray Resistance (1)
on aluminum
on steel
B-117
Hours
Hours
744+
192
744+
-
1000
-
1000
-
Detergent Resistance (2)
on aluminum
on grit-blasted aluminum
on grit-blasted steel
-






Hours


Hours


Hours






264


624


24






744


600


480






-


-


-






-


-


-
Weather Resistance
Florida
Exposure
Years
Unaffected
20
20
10
15


Electrical Properties Of PTFE Coatings


Property
ASTM
Standard
Unit

PTFE
PTFE
FEP
PTFE
PFA
PTFE
ETFE
Dielectric Constant
D150
1 Mhz
2.1
2.1
2.1
2.6
Dielectric Strength
D149
V/m
18
53
80
79
Dissipation Factor
D150
1MHz
<0.0001
0.0006
0.0001
0.0007
Arc Resistance
D495
sec
>300
300
>180
122
Volume Resistivity
D257
Ohm./cm.
>10
>10
>10
>10
Surface Resistivity
D257
Ohm/sq.
>10
>10
>10
>10


Mechanical Properties Of PTFE Coatings

The values shown in this table represent average experience from numerous testing sources and are not intended to be specifications. These values will vary depending upon the individual compositions of the primers and topcoats and the systems used. For further information on the properties of these coating systems, and examples of how they have led to the development of new products, increased production rates and resultant cost savings, please contact us.

Property ASTM Standard Unit PTFE PTFE
FEP
PTFE
PFA
PTFE
ETFE
Specific Gravity D792 - 2.15 2.15 2.15 1.76
Tensile Strength D1457 D1708 D638 Mpa (psi) 21-34 (3000-5000) 23 (3,400) 25 (3,600) 40-46 (5,800-6,700)
Elongation D1457 D1708 D638 % 300-500 325 300 150-300
Flexural Modulus D790 Mpa (psi) 496 (72,000) 586 (85,000) 586 (85,000) 1,172 (170,000)
Folding Endurance D2176 (MIT) cycles >10 5-80x10 10-500x10 10-27x10
Impact Strength D256 Jim (n.l./bin.) 189 (3.5) No break No break No break
Hardness D2240 Shore D pencil 50-65 HB 56 HB 60 72
Abrasion Resistance -Bell Abrasion (1) -Sliding Arm (2) -Tabor Abrasion (3) - G/m mg mg 85 7.9-9.7 12 - 11.1-15.2 14.8 - - - - 13.4 -
Scratch Resistance Scratch master -initial (4) -Complete (5) - kg kg 5.7-7.0 7.3-10.7 5.1-11.4 8.5-13.2 - - - -
Coefficient of Friction -static -dynamic D1894 - 0.12-0.15 0.05-0.10 0.12-0.20 0.08-0.3 0.2 - 0.24-0.50 0.3-0.4
Contact Angle (water) - degree 104-111 95-105 104-111 90-100




Thermal Properties Of PTFE Coatings


Property
ASTM
Standard
Unit

PTFE
PTFE
FEP
PTFE
PFA
PTFE
ETFE
Melting Point
D3416
0C
(0F)
327
(621)
260
(500)
306
(582)
267
(512)
Cure Temperature
-
0C
(0F)
379-429
(715-805)
360-385
(680-725)
379-399
(715-750)
302-323
(575-615)
Max Use Temperature
-Continuous
-Intermittent


-


0C
0F
0C
0F
260
(500)
316
(600)


204
(400)
232
(450)
260
(500)
288
(550)
149
(300)
199
(390)
Flame Rating
UL 94
-
VO
VO
VO
VO
Limiting Oxygen Index
D2863
%
>95
>95
>95
30-36
Heat of Combustion
D240
M.J. / Kg.
(Btul/lb.)
5.1
2,200
5.1
2,200
5.3
2,300
13.7
5,900
Thermal Conductivity
-
Btu. In/h. Ft
F (W/m. k)
1.7
(0.25)
1.4
(0.20)
1.3
(0.19)
1.65
(0.24)


 



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Thanavala Associates
Tapan Thanavala  (CEO)
102, Krishna Kunj, 143, Senapati Bapat Marg
Matunga West, Mumbai - 400016 , Maharashtra , India
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