PPG SIGMASHIELD 880XS Abrasion-resistant Epoxy Coating 880 XS

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Key properties

• Mainly for the "Longchi" coating production line using two-component hot spray application or similar automated coating lines
• Suitable for hot spray hot-curing and hot spray ambient-curing application operations
• Compared with products applied and cured at ambient temperature (such as the standard grade Abrasion-resistant Epoxy 880), heated application after formulation optimisation significantly improves many coating properties.
• Suitable for repair coating of protective coatings on steel structures in permanently immersed zones or in splash zones subject to alternating wet and dry conditions
• High corrosion and seawater resistance
• On abrasive blast cleaned surfaces, coating adhesion is excellent, reaching up to 20 MPa.
• Excellent abrasion resistance and impact resistance
• A single coat applied in one pass achieves the expected long-term protection
• Compatible with well-designed cathodic protection systems
• Large pack versions available (base: 900 L; hardener: 300 L)
• Complies with the technical quality requirements of Australian Standard AS/NZS 3750.2:2008

Colour and gloss

• Grey and black
• Semi-gloss

Basic data at 20 °C (68 °F)

Parameters after mixing

0.4 lb/gal (45.0 g/L) (US EPA Method 24)

0.4 m²/L at 2500 µm (16 in²/US gal at 100.0 mil)

Curing agent: at least 24 months; store in a dry and cool environment

Notes

• See the supplementary data sheet — theoretical spreading rate versus dry film thickness table
• See supplementary parameters — recoat interval table
• See supplementary parameters table — curing time table

Recommended substrate condition and temperature

Substrate condition

• The performance of the coating depends on the quality grade of surface preparation
• Bare steel; blast cleaning to Sa2 or Sa2½ of ISO 8501-1,
• Recommended surface profile 75–100 µm
• Bare steel; for new construction, hand/power-tool cleaning to St3 of ISO 8501-1 or SSPC-SP3 is acceptable;

For maintenance projects, St2 of ISO 8501-1 or SSPC-SP2, or ultra-high-pressure water jetting to WJ2L/3L of UHPWH (SSPC-VIS-4) is required.

Substrate temperature and application conditions

• During application and curing, the substrate temperature must be above 5 °C (41 °F)
• During application, the substrate surface temperature must be maintained at least 3 °C (5 °F) above the dew point.

Instructions for use

Mixing ratio by volume: base : curing agent = 75:25 (3:1)

• Two-component high-pressure airless hot spray equipment used
• If necessary, thin as appropriate, but do not exceed the specified ratio, to bring the application properties of the paint to the ideal state.
• Excessive thinning may reduce the sag resistance of the wet film and slow curing.

Induction Time

Not required

Airless spray (single-feed pump)

• An externally heated two-component airless spray pump

Notes

• Dilute the base component and the hardener component separately at the same dilution ratio, ensuring that the dilution ratios of the individual components and the total dilution ratio are fully consistent.
• The paint temperature at the nozzle outlet shall reach 60 °C (140 °F)
• Paint temperature in the lines shall be maintained between 40°C (104°F) and 60°C (140°F)
• The temperature in the mixing unit (equipment unit) must be controlled between 55°C (131°F) and 65°C (149°F).
• Mixed paint held at 60°C (140°F) will crosslink to an insoluble state within a few minutes; therefore, after completion of the coating operation and during application stoppages

during stoppages, paint remaining inside the equipment (with hardener and base already mixed) shall be flushed out immediately.

Brush/roller

• For local repair and manual touch-up only

Supplementary parameters

Film thickness and spreading rate

Recoat interval schedule for coatings with dry film thickness up to 2500 µm (100 mil)

Curing time schedule for coatings with dry film thickness up to 2500 µm (100 mil)

Notes

• At ambient temperatures of 100–110°C (212–230°F), the time required for the coating to cure to hard dry is approximately 10 min.
• During application and curing, ensure continuous, adequate ventilation (see Safety Sheet 1433 and Information Sheet 1434)

Pot life after mixing (at suitable application viscosity)

Safety Precautions

• For the coating and its recommended thinners, see Safety Sheets 1430 and 1431 and the relevant Material Safety Data Sheet
• This is a solvent-borne coating. Avoid inhaling spray mist and solvent vapours, and avoid contact of uncured paint with skin and eyes.

Worldwide

Although PPG Protective and Marine Coatings is committed to providing completely consistent products to users worldwide, from time to time it may be necessary to make minor adjustments to specific products to comply with local/national regulations or environmental requirements. In the following cases, use the corresponding alternative version of the product data sheet instead.

Reference information

• For product data, refer to Information Sheet 1411
• For safety guidance, refer to Information Sheet 1430
• Safety and health in confined spaces | explosion hazard — toxic hazard: refer to Information Sheet 1431
• For safe working in confined spaces, refer to Information Sheet 1433
• For ventilation guidance, refer to Information Sheet 1434

Quality guarantee

PPG warrants (1) that it has good title to the product, (2) that the product quality conforms to the relevant technical quality specifications in force at the date of manufacture of the product, and (3) that the supplied product is free of lawful claims by third parties for infringement of US patent rights. The above warranties are limited to those given by PPG and other express or implied warranties required by applicable laws and regulations for transactions and commercial practice; any abuse contrary to the stated conditions, and any other warranty for special purposes or uses, are excluded, and PPG shall be free from liability. To claim under this warranty, the buyer must notify PPG in writing within five (5) days of discovering the quality defect, and the date must be within the product's valid storage period or within one (1) year from delivery of the product to the buyer.

If the buyer fails to notify PPG of the defect as required above, this will prejudice the buyer's right to obtain compensation under this warranty from PPG!

Limitation of liability

In all cases, PPG shall not be liable for any indirect, special, incidental or consequential loss of any kind arising from or in connection with the use of this product (whether based on negligence, strict liability or tort).

The information in this product data sheet is based on laboratory tests we believe to be reliable, and is provided for guidance only. PPG may revise this information at any time as experience accumulates and product development progresses.

All recommendations and advice concerning the use of this product, whether in technical documents, in response to an enquiry or otherwise, are given to the best of our knowledge and are believed to be reliable. Our products and related information are provided for industrial users possessing the necessary knowledge and practical skills, and it is the end user's responsibility to determine whether the product is suitable for the specific use. The buyer, having performed such evaluation, proceeds entirely at its own risk.

The quality and condition of the substrate on site, and the many other factors affecting product use and application, are beyond PPG's control. Therefore, PPG accepts no liability for any loss, injury or damage arising from the use of the information in this product data sheet (unless otherwise provided in a written agreement). Different application environments, changes to the application process or extrapolation of the reference data may result in failure to achieve the expected coating quality.

This product data sheet supersedes all previous versions. The buyer is responsible for confirming that the data sheet in hand is the latest version before using the product. The latest version is published on the official website of PPG Protective & Marine Coatings:

www.ppgpmc.com. In case of discrepancy between the Chinese version and the original English version of the product data sheet, the English original shall prevail.

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