FIREPEL
K133 SERIES
POLYESTER RESIN
POLYESTER RESIN FOR FILLED FIRE
RETARDANT APPLICATIONS
Typical Cast Mechanical Properties
1
Test
Unit of
Measure
Nominal Test Method
Tensile Strength psi/MPa 9,900/68 ASTM D638 / ISO 527-1
Tensile Modulus psi/GPa 490,000/3.4 ASTM D638 / ISO 527-1
Tensile Elongation % 2.4 ASTM D638 / ISO 527-1
Flexural Strength psi/MPa 15,400/106 ASTM D 790 / ISO 178
Flexural Modulus psi/GPa 550,000/3.8 ASTM D 790 / ISO 178
Heat Distortion Temp. F/ C @264 psi 185/85 ASTM D648 / ISO 75-A
Barcol Hardness 45 ASTM D2583 / EN 59
Typical Liquid Properties
2
VERSIONS
Viscosity
cps
Thix
Index
Gel
Time
Min
Gel to
Peak
Min
Peak
Exotherm
( F/ C)
Specific
Gravity
K133-AAA-00 18
1 NA 8
2 5 375/191 1.05
K133-ATT-00 100
4 3
5 8
2 5 375/191 1.05
1) 77 F/25 C Brookfield RV viscosity spindle 1 at 50 rpm
2) 180 F/82 F SPI Gel with 1.0% BPO
3) 77 F/25 C Gel time with 2.0% MEKP
4) 77 F/25 C Brookfield RV viscosity spindle 2 at 20 rpm
5) 77 F/25 C Thix Index 2/20
Typical properties are not to be construed as specifications.
DESCRIPTION
Firepel K133 series resins are specifical-
ly designed to be blended with alumina
trihydrate (ATH) to provide fire retardant
properties.
APPLICATION
Firepel K133-ATT-00 is thixotropic to keep
the ATH in suspension longer. ATH is
needed to provide fire retardant proper-
ties.
Flammability of composite parts is de-
pendent on the geometry of the part, de-
gree of cure, reinforcement content, types
of reinforcement, etc. It is the end user’s
responsibility to ensure that finished
parts meet the required specifications.
Published flammability properties should
be used for comparison purposes only.
BENEFITS
Fire Retardant
Laminates made with Firepel K133 se-
ries have passed the UL 94-HB, UL 94-
5V and UL 94-V-0 test requirements. Lami-
nates were made with a blend of 40/60
resin/ATH and 2 plies of 1.5 oz/450
grams/m2 chopped strand mat. (The
glass content was 22.5%)
Toxicity
Composites made with Firepel K133 series
resins have low toxicity values due to the
absence of halogens.
Low Cost
Economical Fire Retardant composites can
be made with Firepel K133 series resins.
Promoter/Catalyst Systems at 77 F/25 C for K133-AAA-00 and K133-ATT-00
Resin 100 100*
Cobalt 6%,phr 0.6 –
N,N-Dimethyl aniline, phr 0.2 0.2
ATH, phr 150-160 150-160
MEKP, phr
2 –
Dibenzoyl peroxide (BPO 98% active) , phr **
– 2
Gel time, minutes
30 38
*Preferred System
**Adjust to concentration of BPO to be used.
FIREPEL
K133 SERIES POLYESTER RESIN
Flammability Properties vs. Laminate Thickness
ASTM E 84 Tunnel Test
ATH phr
ATH %
Resin Mix
% Glass
Composite
Thickness
Flame
Spread
Smoke
Developed
150 60% 16% 0.075 25 65
160 61.5% 19% 0.20 20 195
160 61.5% 23% 0.29 25 150
NOTES: phr = Parts per Hundred Weight
All Laminates were post cured at 212 F/100 C for at least 5 hours.
Filler Guidelines for 150-160 phr ATH Resin Mixes
The particle size of the ATH filler will have a dramatic affect on the viscosity of the filled system. It has been
determined that a 50:50 blend of two different particle size grades of ATH will provide the optimum balance of
processing and reduce the tendency for the filler to settle. Alternate grades at similar mean particle size may
be considered. Some grades of ATH may affect the reactivity of the filled resin mixture, so it is advised to char-
acterize the specific grade of ATH before committing to production.
ATH Grade ATH Resin Mixes
Particle Size Median Particle Size Examples 150 phr 160 phr
Fine
2 4
um
Huber SB632, RJ Marshal
A202
30% 30.75%
Coarse
15 16
um
Huber SB336, RJ Marshal
AH280
30% 30.75%
K133-A Series Resin 40% 38.5%
Sum 100% 100%
NOTE: phr = Parts per Hundred Weight
FIREPEL
K133 SERIES POLYESTER RESIN
Flame Retardant & Smoke Development Data (See Note Below) **
NFPA 258 Smoke Development
(ASTME 662-97 Smoke Density Chamber)
Flame Spread Rating
(ASTME 162- 98)
Flaming Non-Flaming
20
D m 61 4 0
D s 1. 5 1 0 .2
Ds 4 . 0 1 6 2
PROPERTIES OF COMPOSITES AT 150 PHR ATH
ASTM E 1354 Results**
Oxygen Consumption Calorimeter with 50k W/m2
TES T RES ULTS
Time to sustained ignition, seconds 63
Average peak heat release rate, kw /m2 34 0
Average heat release rate after 60 seconds, k w /m2 23 5
Average heat release rate after r 180 seconds , kw /m2 13 8
Average heat release rate after 300 seconds , kw /m2 10 4
Total heat release, mj/m2 27
Average effective heat of combustion, mj/kg 1 7
Smoke obscuration, average specific extinction area, m2 /kg 43 0
Mass loss, % 5 1
Toxic Gas Generation Based on Boeing Specification Support Standard BSS 7239
Sampling 4 minutes after initiation of the test**
Gas Flaming M ode No n – Flaming M o de
Hydrogen Cyanide (HCN) , ppm <2 <2
Carbon Monoxide ( CO) , ppm 67 <10
Nitrous Oxides ( NOx ) ppm <2 <2
Sulfur Dioxide ( SO2) , ppm <1 <1
Hydrogen Fluoride ( HF) , ppm <1.5 <1.5
Hydrogen Chloride (HCL) , ppm 4 2
**Laminates contained 16% fiberglass and were post cured at 212 G/100 C for 3 hours.
FIREPEL
K133 SERIES POLYESTER RESIN
FILLER GUIDELINES FOR 300 PHR ATH RESIN MIXES
Only Martinal ON-921 grade ATH has been tested and found to yield a workable viscosity at 300 phr level (~600 cps). Alter-
nate grades of ATH may be suitable but it is advised to characterize the specific grade of ATH before committing to production.
NOTE: Albemarle and Martinal are Registered Trademarks of Albemarle, Corp.
British Standard Testing
BS : 6853 BS : 476 Pa rt-6 BS : 476 Part-7
Smoke Density,
Annexure D clause
D.8.4 Panel Test
Toxic fume,
Annex - B ,
Clause-B .2
Fire
Propagation
Index
Surface
spread of
flame
Test Results
Ao (On) / Ao (Off) R I Class
1.96 / 2.65 0.4 Class " O " (i= 6.8) Class-1
Formulations PHR P HR P HR P HR
Firepel K133-AAA-00 100 100 100 100
Promoter K* 4 4 4 4
BYK - W 996 ** 9 9 9 9
Aluminum in hydroxide
(Martinal ON-921)***
300 300 300 300
MEKP 8 8 8 8
Glass Reinforcement 3 Plies of 300g/m
2 chopped strand m at 2 Plies of 600g/m
2 woven roving
Resin glass ratio. 3.5 3.5 3.5 3.5
Post Cure 100 C for 5 hrs. 100 C for 5 hrs. 100 C for 5 hrs. 100 C for 5 hrs.
PROPERTIES OF COMPOSITES AT 300 PHR ATH
AOC World Headquarters
955 Highway 57 East, Collierville, TN 38017
+01 901.854.2800
AOC-Resins.com
AOC is a registered trademark of AOC, LLC.
The information contained in this data sheet is based on laboratory data and field experience. We believe this information to be reliable, but do not guarantee its applicability to the user s
process or assume any liability for occurrences arising out of its use. The user, by accepting the products described herein, agrees to be responsible for thoroughly testing
each such product before committing to production. Our recommendations should not be taken as inducements to infringe any patent or violate any law, safety code or insurance regulation.
Data Sheet and its contents are the confidential and proprietary information of AOC and it may not be modified altered deconstructed or presented in any other manner without the explicit authorization of AOC and/or its legal counsel.
FIREPEL
K133 SERIES POLYESTER RESIN
PERFORMANCE GUID ELINES
A. Keep full strength catalyst levels
between 1.0% - 2.0% of the total resin
weight.
B. Maintain shop temperatures be-
tween 65 F/18 C and 90 F/32 C
and humidity between 40% and 90%.
Consistent shop conditions contribute
to consistent gel time and will help the
fabricator make a high quality part.
STORAGE STABILITY
This product is stable for three months
from the date of manufacture when
stored in the original containers, away
from direct sunlight or other UV light
sources and at or below 77 F/25 C.
After extended storage, some drift may
occur in the product viscosity and gel
time.
SAFETY
A. See appropriate Material Safety Da-
ta Sheet for guidelines.
B. Chemical resistance studies have
indicated the dicyclopentadiene resins
such as the Firepel K133 Series res-
ins have inferior resistance to certain
hydrophobic liquids, such as hydrocar-
bons. Fuel storage tanks should not be
produced with the Firepel K133 Series
resins. If your manufacturing needs
require a more corrosion resistant res-
in, please contact your AOC representa-
tive for information or technical assis-
tance on AOC's line of isophthalic or
vinyl ester resins.
APPLICATION GUIDELINES
A. Due to the curing characteristics of
the Firepel K133 series resin, it is de-
sirable to complete all secondary
bonding as soon as possible. Exposure
of the laminate to sunlight will result in
severe secondary bonding problems.
After 24 hours of cure, it may become
necessary to abrade the laminate to
ensure good secondary bonding, espe-
cially if the surface of the laminate has
been allowed to become resin rich.
Low fiberglass content and resin pud-
dling should be avoided with this prod-
uct.
B. To assure adequate bonding to gel
coats, fabricators should pre-wet the
gel coat surface with a thin pass of
catalyzed resin prior to lamination.
ISO 9001:2008 CERTIFIED
The Quality Management Systems at
every AOC manufacturing facility have
been certified as meeting ISO
9001:2008 standards. This certifica-
tion recognizes that each AOC facility
has an internationally accepted model
in place for managing and assuring
quality. We follow the practices set
forth in this model to add value to the
resins we make for our customers.
FOOTNOTES
(1.) Based on tests of Firepel K133-AAA-00 resin at 77
F/25 C and 50% relative humidity. Thixotropic compo-
nents, if applicable, are excluded. Castings were pre-
pared using 1.0% BPO and post cured 1 hour at 93 C,
1 hour at 116 C and 2 hours at 138 C.
(2) The gel times shown are typical but may be affected
by catalyst, promoter, inhibitor concentration, resin,
mold, and shop temperature. Variations in gelling char-
acteristics can be expected between different lots of
catalysts and at extremely high humidities. Pigment
and/or filler can retard or accelerate gelation. It is rec-
ommended that the fabricator check the gelling charac-
teristics of a small quantity of resin under actual operat-
ing conditions prior to use.
Pub. K133 SERIES NA
Effective Date: Feb. 2017
Copyright 2017
Note:
*Promoter K is a product of AOC LLC.
**BYK is a register trademark of BYK-Chemie GmbH,
***Martinal is a register trade mark of Albemarle corporation Germany.
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