SIGMASHIELD 880 Two-component High-solids Polyamine-adduct-cured Epoxy Coating

Browse Similar Models by CategoryThis model belongs to: Epoxy

Introduction

Two-component high-solids polyamine adduct cured epoxy coating.

Key properties

• Mainly used as a protective coating for the maintenance of offshore platform splash zones.
• High seawater resistance.
• Excellent anti-corrosion properties.
• Accepts low surface preparation and is abrasion-resistant.
• Continues to cure under immersion.
• A single coat applied in one pass achieves the expected long-term protection.
• Compatible with well-designed cathodic protection systems.
• Suitable for external protection of various buried pipelines.
• Suitable for wet-blasted or ultra-high-pressure water (UHPWW) cleaned surfaces (whether damp or dry).
• Suitable as the anticorrosive primer for the SIGMAGLIDE fouling-release antifouling system.

Colour and gloss

• Off-white (beige), yellow and black (for exterior topcoat only; other colours can be customized upon request).
• Gloss.

Notes

• Epoxy coatings directly exposed to sunlight generally tend to chalk and fade. Light-coloured epoxy coatings, whether indoors or outdoors, will over time show more or less ambering.

Basic data 20 °C (68 °F)

Parameters after mixing

UK standard UK PG 6/23(92) Appendix 3: maximum 207.0 g/L (approx. 1.7 lb/US gal).

200.0 g/L (1.7 lb/gal) (US standard EPA Method 24).

Chinese national standard GB 30981-2020 (tested value) 152.0 g/L (approx. 1.3 lb/gal)

Maximum time: 14 days.

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 of surface preparation.
• For atmospheric exposure, abrasive blast cleaning to Sa2½ of international standard ISO-8501-1 or at least SSPC SP-6, power tool cleaning to St3 (SSPC SP-3) of international standard ISO-8501-1, or hand cleaning to St2 (SSPC SP-2) of international standard ISO-8501-1, or ultra-high pressure water jetting to WJ-2(L) of SSPC VIS-4 / WJ-2(L) of NACE VIS 7.
• For immersion service: steel substrate shall be blast cleaned to Sa2½ (SSPC SP-10) of national standard ISO 8501-1, with a roughness of 40–75 µm (1.6–3.0 mils).
• When re-treating a previously blast-cleaned surface, treatment with SSPC SP WJ-2(L) is acceptable.
• For local touch-up and stripe coating, power-tool cleaning to SSPC SP-11 is acceptable.
• Surface roughness greater than 75 µm (3.0 mils) is acceptable provided the dry film thickness is appropriate.
• Confirmed compatible previous coat: the surface must be clean, dry and free of all contaminants.

Notes

• Overall, the performance quality of the coating is directly proportional to the degree of surface preparation.

Galvanized parts, stainless steel and non-magnetic metal surfaces

• Galvanized parts: surface preparation shall be standardized; the surface shall be dry and clean, free of any contaminants; the surface shall be comprehensively and thoroughly roughened by sweep blasting.
• Stainless steel and non-ferrous metal surfaces: after complete removal of oil and grease, perform light abrasive sweep blasting to SSPC SP-16, achieving a surface roughness of 40–100 µm (1.5–4.0 mils).
• Use an inert non-metallic abrasive to fully and thoroughly roughen the surface by sweep blasting.

Substrate temperature and application conditions

• 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 = 3:1

• The thinner should be added after the two components are mixed.
• 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, slow hard drying and even reduce strength.

Induction Time

0 min

Notes

• Not required

Notes

• See supplementary parameters — pot life after mixing.

Air spray

Recommended thinner

Thinner 91-92 or Thinner 91-82 (Thinner T-10)

Airless spray (single-feed pump)

Notes

• To confirm the maximum thinner amount, contact the local PPG representative, as the amount is subject to local laws and regulations.

Brush/roller

Cleaning solvent

• Thinner 90-53 or Thinner 90-58 (Thinner 12)

Supplementary parameters

Film thickness and spreading rate

Overcoating interval schedule for dry film thickness up to 500 µm (20.0 mil)

Notes

• The surface must be clean, dry and free of all contaminants.

Recoating interval for Wear-resistant Epoxy 880 (Marine black) at dry film thickness up to 300 µm (12 mils)

Notes

• For further details, please consult the nearest PPG field technical service representative.

Curing schedule for dry film thickness up to 500 µm (20 mil)

Notes

• For maintenance of intermittently immersed facilities such as dock breakwaters and piles, Wear-resistant Epoxy 880 may be immersed in water within 30 minutes after application completion. In this case, dark-coloured coatings may exhibit blushing, but this will not materially affect the subsequent anti-corrosive performance of the coating.
• The drying time of the coating depends on the dry film thickness after application and the ventilation during curing and drying. Generally, when the film thickness is too high and ventilation is poor, the drying rate will slow down.
• When the dry film thickness of a single application exceeds 1500 µm (6.0 mils), the time required to reach the degree of cure for final design film strength shall be extended to 2–2.5 times.
• Adequate and continuous ventilation must be maintained during application and curing of the coating.

Pot life (at normal application viscosity)

Product certifications

• A coating system with SIGMASHIELD 880ALU as the previous primer, 2 coats at 150 µm dry film each, meets the pre-qualification requirements of NORSOK M501 6th edition coating system 7C for temperature resistance up to 90 °C (194 °F), and is correspondingly applicable to the qualification of NORSOK M501 coating system 7B.
• A 2-coat system with SIGMASHIELD 880ALU as the previous primer, each coat at 300 µm dry film thickness, meets the pre-qualification requirements of NORSOK M501 6th edition coating system 7A.
• Meets or exceeds the performance requirements of US Army Corps of Engineers C-200a and SSPC Paint 16.

Safety Precautions

• This is a solvent-borne coating. Avoid inhaling spray and solvent vapours, and avoid contact of uncured paint with skin and eyes
• Refer to the Material Safety Data Sheet and product package labelling for full details of the stated safety precautions and protective measures

Worldwide applicability

Although PPG Protective & 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

• Information sheet | Explanation of product data sheets
• Information sheet | Directives for ventilation practice

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.

The PPG logo, and all other PPG marks are property of the PPG group of companies. All other third-party marks are property of their respective owners.