Atlac 430 ACT is a pre-accelerated, thixotropic, high-grade bisphenol A epoxy vinyl ester resin built for hand lay-up and spray-up fabrication. For composite buyers sourcing resin for chemical-resistant tanks, vessels, pipe repair, anticorrosive flooring, and tooling, Atlac 430 ACT offers a documented combination of chemical resistance, hydrolysis resistance, and long-term heat resistance, backed by third-party marine approvals. This guide summarizes the verified technical data sheet values, processing guidance, and sourcing considerations buyers need before placing an order.
What Is Atlac 430 ACT?
Atlac 430 ACT is especially adapted to meet the requirements of chemical resistance and outstanding mechanical property, in applications such as storage tanks, vessels and equipment, chemical resistance protection, water conservancy projects, sewer pipe rehabilitation, anticorrosive floors, and toolmaking. FRP laminates made from this resin are good in heat resistance and dynamic load carrying, and the resin is suitable for hand lay-up, spray-up, filament winding, and centrifugal casting application methods. It is recommended for the fabrication of chemical-resistant equipment, tooling, and marine components.
Notably, this resin grade has been approved by China Classification Society (CCS) and Lloyd’s Register of Shipping (LR) for boat building, which gives sourcing managers a third-party reference point when specifying material for marine hulls and structural laminates.
Atlac 430 ACT Key Benefits for FRP Buyers
- Good chemical resistance and good hydrolysis resistance
- Outstanding mechanical property
- Heat resistance
- Good resistance to dynamic load carrying
- CCS and LR marine certification
Atlac 430 ACT Product Specification
The following values are taken directly from the manufacturer’s published technical data sheet for this grade. Buyers should request the current batch Certificate of Analysis to confirm values prior to large-volume ordering.
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Appearance | Hazy | – | TM 2265 |
| Solids content, IR drying | 48-53 | % | TM 2033 |
| Acid value | 3-8 | mgKOH/g | TM 2401 |
| Viscosity @23°C | 400-500 | mPa.s | TM 2013 |
| Gel time (25°C to 35°C) | 35-55 | min | TM 2625 |
Reactivity measurement for the gel-time value above is based on 2.0 g Butanox M50 added to 100 g of resin.
Liquid Resin Typical Properties
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Flash point | 33 | °C | TM 2800 |
| Stability, no initiator, dark, 25°C | 3 | Month | – |
Unfilled Castings Typical Properties
| Property | Value | Unit | Test Method |
|---|---|---|---|
| Tensile strength | 86 | MPa | ISO 527-2 |
| Tensile modulus | 3.2 | GPa | ISO 527-2 |
| Tensile elongation | 5.1 | % | ISO 527-2 |
| Flexural strength | 150 | MPa | ISO 178 |
| Flexural modulus | 3.3 | GPa | ISO 178 |
| HDT | 117 | °C | ISO 75-2 |
| Tg | 140 | °C | ISO 6721-2 |
| Unnotched impact strength | 20 | kJ/m² | ISO 179 |
These unfilled casting values were generated on laminates cured with 2.0 g Butanox M50 added to 100 g resin, cured 24 hours at room temperature followed by post curing for 3 hours at 100°C. Actual laminate performance will vary with reinforcement type, glass content, and lay-up quality, so buyers formulating structural parts should confirm expected performance with their own process qualification.
Processing Guidelines
- MEKP is the recommended curing agent, typically dosed at 1%-2.5%. Dosage can be adjusted according to workshop temperature. If a longer gel time (greater than 60 minutes) is required, TBC inhibitor can be added. Workshop temperature should be held between 18°C and 32°C, with relative humidity between 40% and 90%, since stable working conditions support stable product performance.
- If no further laminating is planned, a 0.2% solution of 10% paraffin wax (melting point 54-57°C) in styrene may be added to the final resin layer to provide a tack-free surface.
- This is a thixotropic resin. Gentle stirring before use is recommended.
Application and Curing Guidance
Room-temperature curing laminates should go through post curing to achieve the best properties. Before post curing, the part should cure at room temperature for 24 hours. The recommended post-curing condition is 80-100°C for 3-6 hours. For parts intended for chemical-resistance service, post curing is especially important to fully develop the resin’s resistance properties.
Storage Guidelines
The resin should be stored in a dark, dry place at temperatures between 5°C and 30°C. Shelf life is reduced when the resin is stored at higher temperatures, and its properties may change during storage. Because the shelf life of styrene-containing vinyl ester resin is significantly reduced when exposed to light, it should be stored in dark, 100% light-tight containers only, with direct sunlight avoided.
Sourcing Atlac 430 ACT for Your Project
This resin grade is manufactured under an ISO 9001:2015-certified quality management system, which gives purchasing teams an internationally recognized reference point when auditing suppliers. A Material Safety Data Sheet for this product is available on request, and buyers formulating with recommended international brand products like this grade should always confirm the current batch data sheet, SDS, and marine-approval documentation (CCS/LR) with their supplier before committing to volume orders. Chemicalsstore.com provides supply chain resource support for sourcing managers who need consistent access to vinyl ester resin alongside compatible curing agents, glass reinforcement, and processing additives for a single FRP project.
For buyers comparing resin chemistries across chemical-resistance and marine applications, our unsaturated and vinyl ester resin category lists additional grades suited to hand lay-up, spray-up, and filament winding processes. Peroxide curing systems compatible with this resin, including MEKP grades, are available through our organic peroxide product line. Test method references cited on the technical data sheet correspond to ISO standards maintained by international standards bodies; buyers wanting background on composite test methodology can review the ASTM Committee D20 on Plastics resource page.
Frequently Asked Questions About Atlac 430 ACT
What type of resin is this product?
It is a pre-accelerated, thixotropic, high-grade bisphenol A epoxy vinyl ester resin designed for hand lay-up and spray-up processes.
What applications is it recommended for?
It is recommended for chemical-resistant tanks and vessels, water conservancy projects, pipe repair, anticorrosive flooring, toolmaking, and marine components, where chemical resistance and dynamic load carrying are important.
Does this resin have marine certification?
Yes. This grade has been approved by China Classification Society (CCS) and Lloyd’s Register of Shipping (LR) for boat building, according to the manufacturer’s technical data sheet.
What curing agent and dosage should I use?
MEKP is the recommended curing agent, typically dosed at 1%-2.5% depending on workshop temperature, with post curing at 80-100°C for 3-6 hours recommended for chemical-resistance parts.
How should Atlac 430 ACT be stored?
Store in a dark, dry place between 5°C and 30°C, in 100% light-tight containers, with direct sunlight avoided; shelf life is rated at 3 months without initiator under dark, 25°C conditions.
Request a Quote for Atlac 430 ACT
If your project calls for a CCS/LR-approved vinyl ester resin with documented chemical and heat resistance, contact our team with your target application, laminate schedule, and order volume. We can confirm current lead times, packaging options, and technical documentation for this product and compatible curing systems.
