Interplastic Corporation makes no warranties regarding any material and/or samples described in this report. All properties
specified above are approximate and may vary from material delivered. Delivered material complies with the certificate of
analysis on each shipment of product. Interplastic Corporation makes no representations of fact regarding the material
except those specified above. Final determination of part or application and the suitability of the material for the use
contemplated is the sole responsibility of the buyer. Our technical sales representatives will assist in developing procedures
to fit individual requirements as a customer accommodation, but all advice is accepted at your risk and should be checked for
suitability to your particular processes and needs. These test data and properties are based on results obtained for a specific
material under the specified test conditions – they are not to be used as specifications and are not warranted as performance
attributes for any product or system.
INTERPLASTIC CORPO RATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 8/16
CORVE8151 is a promoted, thixotropic, high heat distortion temperature (270 F/132 C), vinyl ester resin for use in the
manufacture of master tools and molds.
FEATURES BENEFITS
High Heat Distortion Resistance Excellent dimensional stability for long-lived parts
Excellent Solvent Resistance Resists deterioration over time
Versatile Application System Can be used in hand lay-up and spray-up
Good Fiberglass Wet-Out Easy roll-out and high laminate physical properties
Promoted for Ease of Application Good gelation properties with low foaming quality
RELATED PRODUCTS GEL TIME
CORVE8153 20-26 Minutes
LIQUID PROPERTIES RESULTS
Viscosity, Brookfield Model LV #3 Spindle @ 60 rpm, 77 F (25 C), cPs 550-750
Thixotropic Index 3.0-3.5
100 grams resin @ 77 F (25 C), initiated with 1.2% MEKP-925H by volume *
Gel Time, min:sec 15:00-20:00
Gel to Peak Exotherm Time, min:sec 7:00-14:00
Peak Exotherm 360-435 F (182-224 C)
Non-Volatile Content, % 52.0-56.0
Hazardous Air Pollutant (Styrene) Content, % 44.0-48.0
Specific Gravity 1.00-1.09
TYPICAL PROPERTIES
Thickness 1/8 inch (3.2 mm) Casting
Construction Not Applicable
Flexural Strength, ASTM D790 18,000 psi 124 MPa
Flexural Modulus, ASTM D790 4.8 x 10
5
psi 3,310 MPa
Tensile Strength, ASTM D638 11,400 psi 79 MPa
Tensile Modulus, ASTM D638 5.4 x 10
5
psi 3,724 MPa
Tensile Elongation, ASTM D638 3.5 % 3.5 %
Barcol Hardness, 934-1 gauge, ASTM D2583 35 35
Heat Distortion Temperature, ASTM D648 270 F 132 C
* Gel time and reactivity will vary due to the type and concentration of Free Radical Initiator (commonly called catalyst ), shop temperature, humidity, and type of filler
used. In order to meet your individual needs, consult our technical sales representative for assistance. See following page for proper selection and application of Free
Radical Initiators.
To reduce fiber print-through, we suggest a 1 oz/ft
2
(460 g/m
2
) glass mat, then a 1.0 oz/ft
2
(305 g/m
2
) cloth, followed by a 1 oz/ft
2
(460 g/m
2
) mat behind a high heat
distortion temperature tooling gel coat. After the first laminate has gone through exotherm and has returned to room temperature the laminate schedule may begin. We
recommend an all-vinyl-ester tool for the highest heat distortion temperature and cycle resistance, and a minimum of a 3/8″ (9.525 mm) vinyl ester laminate if the part is
to be reinforced with another high heat distortion temperature laminating resin.
CORVE8151
Vinyl Ester Resin
Technical Data Sheet
Interplastic Corporation makes no warranties regarding any material and/or samples described in this report. All properties
specified above are approximate and may vary from material delivered. Delivered material complies with the certificate of
analysis on each shipment of product. Interplastic Corporation makes no representations of fact regarding the material
except those specified above. Final determination of part or application and the suitability of the material for the use
contemplated is the sole responsibility of the buyer. Our technical sales representatives will assist in developing procedures
to fit individual requirements as a customer accommodation, but all advice is accepted at your risk and should be checked for
suitability to your particular processes and needs. These test data and properties are based on results obtained for a specific
material under the specified test conditions – they are not to be used as specifications and are not warranted as performance
attributes for any product or system.
INTERPLASTIC CORPO RATION
2015 Northeast Broadway Street
Minneapolis, Minnesota 55413-1775
651.481.6860 Fax 612.331.4235
www.interplastic.com
Revised: 8/16
INITIATOR SELECTION AND APPLICATION
The method of application is critical to ensure that the finished part will have the desired properties.
The selection of initiator is very important. We currently recommend three brands of MEKP initiator: Cadox L-50a,
Luperox DHD-9, and Norox MEKP-925H. The use of other initiators is not recommended. If an initiator not on this
recommended list is used, the customer must establish its suitability for the application, as well as assume liability.
Use of the correct amount of initiator is also very important to ensure that the laminate cures sufficiently to obtain optimum
physical properties. When laminates 1/16th of an inch thick (0.75 mm) or thinner are constructed, the amount of initiator
should be a minimum of 1.5 percent based on the resin. The typical range of initiator amounts is 1.7 to 2.0 percent for this
thickness. Thinner laminates require higher percentages of initiators. No benefit is seen using levels greater than 3.0
percent, with levels of 1.0 to 3.0% recommended in the construction of laminates out of vinyl ester resins. The typical
percentage of initiator used to construct laminates greater than 1/8th of an inch (3.175 mm) thick is 1.0 to 1.2 percent.
When applying the vinyl ester as a skin coat or laminate, the gel coat should be prepared and cured normally. Initially a
coating of vinyl ester resin should be applied to wet the gel coat surface; then fiberglass may be chopped or layered on
the resin. Do not over-spray when chopping glass onto the surface. Dry fiberglass should not lie directly on the gel coat
because this can cause premature blistering of the part. The best way to ensure no over-spray is to stop chopping 1-2 feet
(30-60 cm) from the edge of the vinyl ester resin layer that has dry gel coat adjacent.
The vinyl ester skin coat should be allowed to cure from one to four hours, depending on the gel time of resin being used,
the ambient temperature, and the temperature of the mold. Interplastic Corporation will provide timetable guidelines for
when the skin coat is ready to be laminated. The skin coat may be left overnight before applying subsequent coats;
however, the skin coat should not be left for longer than 24 hours because of the risk of delamination within the
composite. The surface of the skin coat should be tacky to the touch to ensure proper bonding between layers. If the
surface is not tacky it should be thoroughly roughed up with medium grade sandpaper and cleaned before applying the
next layer to ensure a good bond.
Cadox is a registered trademark of Nouryon Functional Chemicals B.V. or affiliates in one or more territories.
Luperox is a registered trademark of Arkema, Inc.
Norox is a registered trademark of United Initiators Spi, Inc.