Vipel K022 Series
Vinyl Ester Resin
Fire Retardant Bisphenol-A,
Epoxy Vinyl Ester Resin
AOC’s Vipel K022 series are brominated
bisphenol-A epoxy vinyl ester resins
dissolved in styrene.
*Typical properties are not to be construed as specifications.
Benefits
Versatile
Vipel K022 is available in a wide range of formula-
tions, which allows the product to be used in
many processes and also optimizes
cost/performance.
Vipel K022-CN versions already contain an anti-
mony product to meet a Class 1 flame spread.
Fire Retardant
Because of the versatility of Vipel K022, versions
are available to meet ASTM E 84 Class 1 or 2 flame
spread.
Flammability of composite parts is dependent on
the geometry of the part, degree of cure, rein-
forcement content, types of reinforcement, etc. It
si the end user s responsibility to ensure that fin-
ished parts meet the required specifications. Pub-
lished flammability properties should be used for
comparison purposes only.
Mechanical Properties
Vipel K022 is suitable for moldings that are sub-
jected to particularly high static or dynamic loads.
Corrosion Resistance
Vipel K022 is highly resistant to a number of
chemical environments. Refer to AOC’s “Corrosion
Resistant Resin Guide” for corrosion resistance
information or for questions regarding suitability
of a resin to any particular chemical environment
contact AOC.
Vipel K022-CN versions are not recommended for
use in the corrosion liner.
Typical Cast Mechanical Properties of Vipel K022 AC, CC
Series
1
See Test Methods
Test Unit of Measure K022-AC Series K022-CC Series
Tensile Strength psi/Mpa 12,500/86 12,000/83
Tensile Modulus psi/Gpa 520,000/3.6 520,000/3.6
Tensile Elongation % 4.7 5.4
Flexural Strength psi/Mpa 21,300/147 20,700/143
Flexural Modulus psi/Gpa 530,000/3.7 530,000/3.7
Heat Distortion Temp. F/ C @ 264 psi 241/116 234/112
Glass Transition Temperature,Tg F/ C 262/127
Barcol Hardness 39 40
Typical Cast Mechanical Properties of Vipel K022 CN, E
Test Unit of Measure K022-CN Series K022-E Series
Tensile Strength psi/Mpa 11,000/76 12,500/86
Tensile Modulus psi/Gpa 530,000/3.7 510,000/3.5
Tensile Elongation % 3 4.5
Flexural Strength psi/Mpa 20,100/138 21,500/149
Flexural Modulus psi/Gpa 560,000/3.9 540,000/3.7
Heat Distortion Temp. F/ C @ 264 psi 237/114 237/114
Barcol Hardness 34 39
APPLICATION
Vipel K022 series is ideally suited for use in hand
lay-up, spray-up, filament winding and pultrusion
processes where outstanding mechanical proper-
ties and excellent resistance to chemicals and heat
are required.
All versions of the K022 Series do not meet ASTM
E84 Class 1 smoke requirements.
Vipel K022 Series
Vinyl Ester Resin
Typical Liquid Properties
2
Versions Viscosity, cps
Thix In-
dex
Gel Time ,
min
Gel to Peak,
min
Peak
Exotherm
F/ C
Specific Gravity
Styrene
Content, %
The following versions, as supplied, meet ASTM E 84 Class 1 flame spread
K022-ACA-00 450
1
NA 21
2
13 340/171 1.15 39
K022-ACB-00 650
1
NA 21.5
8
343/173 1.15 37
K022-ACP-20 450
1
NA 20
5
11 365/185 1.16 39
K022-ACT-45 525
1
2.0
6
45
5
17 338/170 1.14 41
K022-ACV-25 450
1
2.0
6
25
5
13 356/180 1.15 43
K022-CNC-00 450
1
NA 35
2
13 350/177 1.16 39
K022-CND-00 350
1
NA 22
2
12 335/168 1.13 41
K022-CNP-25 450
1
NA 25
5
14 350/177 1.16 39
K022-EAA-40 250
3
NA 40
5
22 266/130 1.12 41
K022-EBB-00 250
3
NA 25
2
12 350/177 1.12 41
The following versions, as supplied, meet ASTM E 84 Class 2 flame spread
K022-CCC-00 450
1
NA 22
2
12 330/166 1.15 39
K022-CCK-18 525
3
2.0
4
18
5
14 350/177 1.11 41
K022-CCL-00 525
3
2.0
4
25
7
15 365/185 1.11 41
*Some specifications modified based on product production history.
NA-Not applicable
1. 77 F/25 C Brookfield RV viscosity spindle 2 at 20 rpm
2. 77 F/25 C Gel time with 0.3% cobalt 6%, 0.05% DMA and 1.25% MEKP 925H
3. 77 F/25 C Brookfield LV viscosity spindle 3 at 60 rpm
4. 6/60 rpm Thix Index
5. 77 F/25 C Gel time with 1.25% MEKP 925H
6. 2/20 rpm Thix Index
7. 77 F/25 C Gel time with 0.4% Cobalt 6%,
8. 100g, @25 C, 0.30% Cobalt 6%, 0.05 DMA+1.25% Butanox M50
*Typical properties are not to be construed as specifications.
Flammability Properties ASTM E-84 Tunnel Test**
ASTM E 84
Versions Antimony Trioxide Flame Spread Classification (*)
K022-AC Series 25 Class 1
K022-CNC and CNP Yes 10 Class 1
K022-CND-00 Yes 15 Class 1
K022-EAA & EEB 25 Class 1
K022-CCC, CCK & CCL 40 Class 2
* None of the K022 products meet ASTM E 84 Class 1 smoke requirements, which is defined as less than 450. Consult an AOC representative
for specific smoke development value.
** 2 plies of 2.0 ounce per square foot (600 grams per square meter) fiber glass chopped strand mat Fiberglass content – 30%lamnates were
post cured at 212 F/100 C for 3 hours.
Note: The degree of fire resistance of a cured resin is characterized by the ASTM E 84 test. This test is performed under strictly controlled
conditions where a flame spread rating is assigned according to comparisons with test set-point materials. The behavior of the end-users
composite cured under controlled conditions can vary significantly in an actual fire situation due to the large number of unpredictable varia-
bles associated with actual fire situations.
Vipel K022 Series
Vinyl Ester Resin
Gel Times for Vipel K022 Series
Cobalt Naphthenate (6%) & DMA and DEA alternative with 1.25% MEKP 925H
DMA DEA
Resin Temperature ( F) 60s 70s 90s 60s 70s 90s
10 20 min. 20 13 17 16 17 13
MEKP,% 1.25 1.25 1.25 1.25 1.25 1.25
CoNAP,% 0.2 0.3 0.3 0.3 0.3 0.3
DMA,% 0.2 0.15 0.05
DEA,% 0.5 0.3 0.2
20 40 min. 24 32 36 27 31 30 28 35 36 33
MEKP,% 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25
CoNAP,% 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
DMA,% 0.1 0.05 0.05 0.05 0.05
DEA,% 0.1 0.1 0.1 0.1 0.1
2,4-P,% 0.05 0.08 0.5 0.08
TBC,% 0.0075 0.01 0.004 0.017
40 60 min. 44 52 48 50 46 55 44 45 48 56 52 43
MEKP,% 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25
CoNAP,% 0.2 0.1 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
DMA,% 0.05 0.05 0.05 0.05 0.05 0.05
DEA,% 0.1 0.1 0.1 0.1 0.1 0.1
2,4-P,% 0.04 0.075 0.1 0.04 0.06 0.01
TBC,% 0.007 0.015 0.02 0.005 0.01 0.025
Vipel K022 Tensile Property Testing At Various Temperatures
Temperature,
F/ C
Physical Property Casting
Chopped Mat
***
RTP-1
Laminate
****
Ambient
Tensile strength, psi/MPa 12,000/83 15,000/103 21,500/148
Tensile modulus, psi/GPa 520,000/3.6 1,400,000/9.6 1,770,000/12
4.6 1.6 1.7
Tensile strength, psi/MPa 9,900/68 16,500/114 21,500/148
150/66 Tensile modulus, psi/GPa 436,000/3.0 1,200,000/8.3 1,650,000/11
Elongation,% 5.1 2 1.8
200/93
Tensile strength, psi/MPa 7,200/50 13,000/90 21,000/145
Tensile modulus, psi/GPa 415,000/2.8 1,000,000/6.9 1,480,000/10
Elongation,% 6.1 2.1 1.7
250/121
Tensile strength, psi/MPa 1,200/8 7,900/54 13,000/90
Tensile modulus, psi/GPa 128,000/0.9 490,000/3.4 800,000/5.5
Elongation,% >10 2.2 2
275/135
Tensile strength, psi/MPa 210/1.5 6,000/42 9,500/66
Tensile modulus, psi/GPa 1,900/0.01 420,000/2.9 850,000/5.9
Elongation,% 11.5 4.4 1.3
300/149
Tensile strength, psi/MPa 4,200/29 7,100/49
Tensile modulus, psi/GPa 420,000/2.9 630,000/4.3
Elongation,% 2.3 1.2
Glass Content,% 29 37
*** Laminates made with 3 plies of 1.5 oz (450 grams/m2) chopped strand mat
****Laminates made with veil/5plies of 1.5 oz mat(450 grams/m2), 24 oz (814 grams/m2) woven roving. (veil/3M/R/M/R/M)
Vipel K022 Series
Vinyl Ester Resin
Gel Times for Vipel K022 Series
Benzoyl Peroxide Catalyst (BPO)
1
with DMA and alternative DEA
[For laminates less than 3/16 inches (4.8 mm) thick]
Resin Temperature ( F) 60s 70s 90s
10 20 min. 17 18 18 18 10 15
BPO,% 1.0 1.0 1.0 1.0 1.0 1.0
DMA,% 0.35 0.23 0.2
DEA,% 0.8 0.5 0.3
20 40 min. 23 27 26 28 26 27
BPO,% 1.0 1.0 1.0 1.0 1.0 1.0
DMA,% 0.25 0.12 0.09
DEA,% 0.5 0.3 0.2
40 60 min. 49 56 44 55 42 54
BPO,% 1.0 1.0 1.0 1.0 1.0 1.0
DMA,% 0.1 0.1 0.05
DEA,% 0.25 0.15 0.1
1) BPO A98 powder dissolved in styrene
BPO/DMA GEL TIMES FOR NON -PROMOTED VIPEL K022-ACA
Temperature 10 – 20 Minutes 20 – 30 Minutes 30 – 40 Minutes
F/ C 65/18 77/25 90/32 65/18 77/25 90/32 65/18 77/25 90/32
Benox L40LV
1
, % 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
DMA
2
, % 0.5 0.32 0.23 0.4 0.23 0.15 0.25 0.15 0.10
Gel Time, minutes 17 17 16 24 25 22 35 37 38
Gel to Peak, minutes 10 9 9 10 10 9 13 13 14
Peak Exotherm F/ C 290/143 322/161 328/164 298/148 318/15331/16290/1320/16346/17
1) Benox L40LV from United Initiators is a 40% Dibenzoyl Peroxide dispersion
2) DMA is N, N Dimethylaniline
(*) Active BPO content should not be less than 1.0% or 2.5% Benox L40LV
(**) DMA should not be less than 0.05%
(***) If other gel times are needed, please consult an AOC Technical Representative
(****) Typical properties are not to be construed as specifications
5
Americas
+1 866 319 8827
americas@aocresins.com
AOC is a registered trademark of the AOC group of companies.
The user is held responsible for checking the quality, safety and all
other properties of our products prior to use. The information and recommendations contained herein
are to the best of our knowledge accurate and reliable, but no rights whatsoever may be derived by any
party other than those expressly agreed to with a selling entity of the AOC group of companies in a
legally binding agreement. AOC hereby makes no warranty of any kind, express or implied, including
those of merchantability and fitness for purpose. Unless explicitly agreed to in writing by AOC other-
wise, all offers, quotations, sales and deliveries of AOC products are subject to the general conditions of
sale of AOC. Altek
, Atlac
, Atryl
, Beyone
, Chroma-Tek
,, Daron
, Firepel
, Hydropel
, MoldTru
,
NeoMould
, Neoxil
, Palatal
, Palapreg
, Pultru
, Synolite , Vibrin
, Vicast
, Vipel
, the AOC
name, the
AOC logo and the Trusted Solutions
logo are the registered trademarks of the AOC group of companies.
For more information: aocresins.com
Performance Guidelines
A. Keep full strength catalyst levels
between 1.0% – 2.0% of the total resin
weight.
B. Maintaining shop temperatures be-
tween 65 F/18 C and 90 F/32 C and
humidity between 40% and 90% will
help the fabricator make a high quality
part. Consistent shop conditions con-
tribute to consistent gel times and will
help the fabricator make a high quality
part.
C. Finished part surfaces that have
been cured at room temperature in
contact with air should be relatively
tack free. They may not, however, be
fully cured and are thus not as resistant
to chemicals as a fully cured part. If no
further laminating is planned, a 10%
solution of 5% paraffin wax solution
(MP 115-118 F/46-48 C) in styrene
may be added to the last resin layer to
provide a tack free surface.
D. Optimum cure and performance
may be obtained by post curing room
temperature cured laminates for two
hours at 158-212 F/70-100 C.
E. Room temperature curing by means
of cobalt acceleration should be com-
pleted with low hydrogen peroxide
content MEKP catalyst, such as MEKP
925H, to minimize foaming.
ISO 9001:2015 Certified
The Quality Management Systems at
every AOC manufacturing facility
have been certified as meeting ISO
9001:2015 standards. This certifica-
tion recognizes that each AOC facili-
ty has an internationally accepted
model in place for managing and
assuring quality. We follow the prac-
tices set forth in this model to add
value to the resins we make for our
customers.
Material Safety
See the appropriate Safety Data
Sheet for guidelines.
Test Methods
(1.) Based on tests of Vipel K022 at 77 F/25 C
and 50% relative humidity. All tests performed on
unreinforced cured resin castings. Thixotropic
components, if applicable, are excluded from
casting samples. Castings were prepared 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 concen-
tration, resin, mold, and shop temperature. Varia-
tions in gelling characteristics can be expected
between different lots of catalysts and at extreme-
ly high humidities. Pigment and fillers can retard
or accelerate gelation. It is recommended that the
fabricator check the gelling characteristics of a
small quantity of resin under actual operating
conditions prior to use.
Vipel K022 Series
Vinyl Ester Resin
Pub. Vipel K022 Series
Last update: October 17, 2021
2021 AOC
Storage Stability
Vipel K022-ACP-20, K022-ACT-30,
K022-ACT-45, K022-CCK-18, K022-
CNP-25 and K022-EAA-40 are stable
for 3 months from the date of manu-
facture when stored in original con-
tainers, away from direct sunlight or
other UV light sources and at or be-
low 77 F (25 C). All other Vipel K022
products are stable for 6 months
from the date of manufacture when
stored in original containers, away
from direct sunlight or other UV light
sources and at or below 77 F (25 C).
Storage stability of two months or
less should be anticipated if the stor-
age temperature exceeds 86 F (30 C).
After extended storage, some drift
may occur in the product viscosity
and gel time.