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STICKFAST
352 SUPERIOR VINYL ESTER RESIN
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GENERAL
DESCRIPTION |
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Stickfast
352 is a new high temperature corrosion
resistant Vinyl Ester Resin based
on Epoxy Novalac back bone and is
having very high HDT and improved
resistance to many severe chemical
environment, especially chlorinated
solvent resistance. Stickfast 352
superior Vinyl Ester Resin is found
to be extremely effective in harsh
chemical environments, where General
purpose vinyl ester resin and Bisophenol-A
fumerate polysters have failed. It
is recommended for the manufacture
of FRP components vizfilament winding,
handle up, centrifugal casting, bag
moulding or pultrusion.
Stickfast
352 superior vinyl ester resins
designed to handle solvents and
severely corrsion mixture at higher
temperature. Since the unsaturation
is terminal, carbon-to-carbon double
bonds are extremely reactive and
cure rapidly and consistently to
give superior strength and creep
resistance
The multifunctional epoxy Nocalac
back bone in their molecular structure
gives a highly cross linked structure
on curing, which imparts superior
oxidation, heat and solvent resistance
than general purpose Vinyl Ester
Resins.
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TYPICAL
PROPERTIES OF STICKFAST 352 |
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| Appearance
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Reddish
brown clear liquid
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Viscosity
@ 25 °C
(Brook field viscometer)
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250 
50 |
| Speicifiy
gravity @ 25 °C |
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1.06
0.01 |
| Acid
Value (mgs KOH/gm) |
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5
- 10 |
| Volatile
content (Wt%) |
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37
2 |
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CURING
CHARACTERISTICS |
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Stickfast 352 superior vinyl
ester resins are polymerized
by free-radical initiating catalysts.
The most commonly used catalyst
systems are similar to the one
used with General purpose vinyl
ester resins.
Typical
gelation time of Stickfast
352 25
°C
is given below.
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| Stickfast
352 |
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100
gms |
| Promoter
(DMA 8%) |
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1.5
ml. |
| Accelerator
(Co 3%) |
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1.5
ml |
| Catalyst
MEKP (50% Conc.) |
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1.5
ml. |
| Geltime
(Minutes) |
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25 |
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CAUTION : Accelerator and promoter
should never be mixed with catalyst
as this would cause explosion.
The accelerator and promoter
should be blended into the resin
first. The catalyst should be
added just before use. |
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| TYPICAL
MECHANICAL PROPERTIES OF CURED
UNREINFORCED RESIN
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| Tensile
strength (Kg/cm2) |
635 |
| Flexural
strength (Kg/cm2) |
1150 |
| Heat
Distortion Temperature
(°C) |
125
2 |
| Barcol
Hardness |
35
- 40 |
| Elongation
at break (%) |
2.0 – 2.5 |
| Specific
Gravity |
1.10 |
AREAS
OF APPLICATION
Stickfast 352 superior
vinyl ester resins out
perform General purpose
vinyl esters, as well
as acid polyesters and
Bisphonel-A fumerate polyesters.
Stickfast 352 shows corrosion
resistance properties
similar to general purpose
vinyl ester resin Stickfast
351 but shows better chemical
resistance to Chlorinated
solvents and it performs
much better at higher
temperatures. Stickfast
352 resins are used as
an economic alternatives
to exotic alloys. These
resins are used in high
temperature chlorination
or caustic scrubbing and
strong, in sulfonation
processes, in industrial
waster treatment facilities
where solvents are present
and in the solvent extraction
process used in mining.
Also they are used for
hydrochloric acid transport,
tank truck and lining..
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