HEMPEL's Epoxy Zinc-rich Primer 174CN

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174CN

Product Characteristics

Description

Hempel Epoxy Zinc-rich Primer 174CN is a two-component zinc-rich epoxy primer. It forms a hard, abrasion-resistant and highly weather-resistant film. The product provides cathodic protection to locally damaged areas.

Recommended use

Can be used as a primer in epoxy, polyurethane and acrylic coating systems for steel surfaces in medium to severe corrosive environments.

Service temperature

• Under dry conditions: maximum service temperature 160 °C [320 °F].

VOC content (after mixing the multi-component paint)

Subject to specific legislation; see the explanatory notes on the Hempel website hempel.com or your local Hempel website. VOC values may vary with colour; refer to Section 9 of the Safety Data Sheet. This product complies with the VOC requirements of national mandatory or recommended standards; consult the company representative for details.

Handle with care. Before and during use, observe the safety labels on the packaging and paint containers and comply with all local and national safety regulations. Consult the Hempel Safety Data Sheet and Product Data Sheet for the product at all times.

For professional use only.

Product Data

Curing Agent 97040

Grey 19830

174CN

Surface Preparation

Cleanliness

• Remove oil, grease and other contaminants by cleaning with a suitable cleaner.

• Remove salts, detergents and other contaminants by high-pressure fresh water washing.

• Remove dust, blast abrasives and loose material by vacuum cleaning.

- The maximum permitted water-soluble salt level tested in accordance with ISO 8502-9 is 50 mg/m² (as NaCl).

- Use high-pressure fresh water washing (approx. 30 MPa [4400 psi]) combined with scrubbing to remove zinc salt deposits and white rust.

- Before final painting, all shop primer breakdown and contamination incurred during storage and erection must be thoroughly cleaned by mechanical/chemical means.

New construction

• Abrasive blast clean to Sa 2½ (ISO 8501-1) / SP 10 (SSPC) minimum.

• Remove dust, blast abrasives and loose material.

Maintenance and repair

• Remove dust, blast abrasives and loose material.

Roughness

• Surface roughness Medium (G) (ISO 8503-2).

For further details, refer to the separate Hempel document Surface Preparation Guide.

Application

Mixing Ratio

Base 174C9 : Curing agent 97040 (4 : 1 by volume)

Products containing floating or settling particles/pigments require continuous stirring during application; this is especially important when heavily thinned.

Pot Life

Recommended method

Nozzle pressure: 15 MPa

Airless Spray

Nozzle size: 0.43–0.53 mm

If brush or roller application is used, several coats may be required to achieve the specified dry film thickness. Keep thinning to a minimum. At low temperatures, additional thinning may be required, resulting in lower film build and slower drying. Spray parameters are indicative and may be adjusted to suit site conditions. Pressure figures apply to the material at 20 °C. (*For other application methods, consult the company representative.)

Film thickness

Depending on the application and area of use, other film thicknesses than those indicated may be specified. This will change the spreading rate, drying and curing times and recoating intervals. The actual consumption factor may vary with application conditions, equipment and skill. Excessive thickness must be strictly controlled; locally, 100 µm [4.0 mils] DFT must never be exceeded. In cases of irregular surfaces, particular attention is recommended to avoid excessive use.

Application conditions

• During application and curing, the surface temperature must be above -10 °C [14 °F].

• During application, the product temperature must be above 15 °C [59 °F].

• The surface to be coated must be clean and dry, and its temperature must be at least 3 °C [5 °F] above the dew point to avoid condensation.

• Provide adequate ventilation during application and drying.

Relative humidity

• During application, the relative humidity must be below 85%.

• During curing, the relative humidity must be below 85%.

174CN

Notes

- If brush or roller application is used, more coats are required to achieve the specified dry film thickness.

• This product requires heavy-duty spray equipment; hoses should be as short as possible.

• The practical consumption factor may vary with application conditions, equipment and workmanship.

• Checking paint consumption against area improves film thickness control.

• To avoid contamination of other areas, masking is recommended.

Drying and recoat

Product compatibility

• Previous coat: none.

- Subsequent coat: in accordance with Hempel's specifications. Hempel's Epoxy MIO 471CN, Hempadur Mastic 45880

Drying Time

Measured at 50 µm dry film thickness under standard conditions; see Hempel's explanatory notes. To determine the drying state, refer to the Application Specification COP FP1401-1 (drying test for high film thickness)

Recoat

Hempel's specifications supersede all guidance shown in the recoat table.

Extendable* Depending on the actual exposure conditions, the coated surface may be recoated after an extended time. Contact your local Hempel representative for advice.

For products of the same generic chemical composition, recoat times are for reference only.

For further information, refer to Hempel's specifications.

Drying conditions

- To achieve the stated drying times, adequate ventilation during application, drying and curing is essential.

• Avoid condensation on the freshly applied coating.

Recoat notes

• If the maximum recoat interval is exceeded, the surface must be roughened to ensure intercoat adhesion.

• The recoat interval may be adjusted according to line speed, ventilation, environment and oven temperature.

• The surface must be clean before recoating.

• Before recoating, remove any exudate from the surface.

• Before recoating, remove zinc salts or other contaminants.

• The surface must be dry and clean before application.

• For details, consult Hempel.

Storage

Shelf Life

When stored in unopened original containers, shelf life is counted from the date of production. Thereafter, the product quality must be re-inspected. Storage at high temperatures may shorten the shelf life. For advice, consult Hempel.

Storage conditions

• Store under dry conditions. Protect from moisture ingress.

- Store the product in accordance with the Safety Data Sheet, label and local regulations. Keep containers in a dry, cool, well-ventilated place away from heat and sources of ignition. Keep containers tightly closed. Handle with care.

Carbon footprint

Carbon footprint is based on a 1 µm dry film thickness formed over a surface area of 1 m².

The scope includes raw materials, transport to the Hempel factory, the Hempel production process, and any volatile organic compounds (VOC) emitted during and after use of the product.

174CN is calculated based on the standard colour codes defined in this PDS. Values may vary with different colour codes.

Supplementary documents

For further information, refer to the Hempel website (https://www.hempel.com/service-and-support/technical-guidelines) or your local Hempel website:

• Notes to the Product Data Sheet.

• Application Methods
• General application guide

datasheet, which is also available for download at www.hempel.com.

This Product Data Sheet (“PDS”) relates to the product supplied (the “Product”), and its content is updated from time to time. Accordingly, the buyer/applicator should refer to the PDS supplied with the relevant batch of product (rather than an earlier version). In addition to the PDS, the buyer/applicator may receive some or all of the specifications, declarations and/or guides shown below, which are also available for download from the “Products” page of the Hempel website (www.hempel.com) (hereinafter the “Supplementary Documents”):

If the information in the PDS and the supplementary documents is inconsistent, the information shall take precedence in the order listed above. In this case, contact the Hempel representative for clarification. In addition, the buyer/applicator must give full consideration to the relevant safety information accompanying each product. Hempel accepts no liability for any defects arising from application not carried out fully in accordance with the recommendations and requirements of the relevant PDS and supplementary documents. The information and terms in this disclaimer apply to this PDS, the supplementary documents and any other relevant documents provided by Hempel for this product. In addition, unless otherwise expressly agreed in writing, supply of the product and all technical support are subject to Hempel's General Conditions of Sale, Delivery and Service.

Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.