PPG SIGMALINE 2000 Two-component Solvent-free Amine-cured Phenolic Epoxy Coating

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Introduction

A two-component, solvent-free, amine-cured phenolic epoxy.

Key properties

• A single-coat system that can be applied directly to the metal substrate surface on the external wall of pipelines.
• Suitable for engineering projects such as bell-hole excavators and similar engineering projects.
• Compatible with well-designed cathodic protection systems.
• Smooth, glossy surface.
• Use heatable two-component airless spray equipment for application.
• Can be applied to substrate surfaces at temperatures up to 90°C (194°F).
• Reduces explosion risk and fire hazard.
• Complies with the requirements of EN10289.

Colour and gloss

• Brown-red
• Gloss.

Basic data 20 °C (68 °F)

Parameters after mixing

Maximum 146.0 g/L (approximately 1.2 lb/US gallon) (theoretical calculated value).

Maximum time: 2 months.

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

• Bare steel: blast cleaning to Sa2½ of ISO 8501-1, with a surface profile of 50–100 µm (2.0–4.0 mil).

Substrate Temperature

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

Instructions for use

Mixing ratio by volume: base : curing agent = 4:1

• Before application, the temperature of the base and curing agent components, or of the mixed paint, shall be adjusted to at least 20 °C (68 °F).
• At low temperatures, spraying may be difficult because of high paint viscosity.
• No thinning required.

Induction Time

0 min

Notes

• Not required

Notes

• See supplementary parameters — pot life after mixing.

Airless spray (single-feed pump)

Notes

• For single-component airless spray equipment, use a heavy-duty 60:1 spray pump with suitable high-pressure hoses.
• Hose length shall be as short as possible.
• For coating application at low temperatures, hoses with in-line heating or thermal insulation may be required to prevent the paint in the hose from cooling.

Brush/roller

• For local small-area repair and manual touch-up only.

Cleaning solvent

• Thinner 90-53 or Thinner 90-83
• All application equipment must be cleaned immediately after use.
• Paint remaining in spray equipment must be fully discharged within its pot life.

Supplementary parameters

Dry film thickness measurement

• When measuring dry film thickness, place a calibration shim of known thickness over the coating at the test point, then gently press the gauge probe onto the shim to measure the film thickness through it.
• Because the probe of the thickness gauge indents the soft film, the initial hardness of the film is insufficient to measure the dry film thickness accurately for a few days after completion of the coating.

Wet film thickness measurement

• There is always a difference between the measured wet film thickness and the actual applied wet film thickness.
• On site, wet film thickness readings often differ from the true film thickness because of the thixotropic nature and surface tension of the paint; air entrapped in the paint escapes slowly and temporarily occupies part of the wet film volume.
• During application, control the wet film thickness to the nominal dry film thickness plus 60 µm (2.4 mils).

Film thickness and theoretical spreading rate

Notes

• Note: Maximum dry film thickness for brush application: 150 µm (6.0 mils).

Recoat time for a coating at 600 µm (24.0 mils) dry film thickness

Notes

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

Curing time for a coating at 600 µm (24.0 mils) dry film thickness

Notes

• Adequate and continuous ventilation must be maintained during application and curing of the coating.

Pot life (at normal application viscosity)

Notes

• Because mixing is an exothermic reaction, the paint temperature may rise during mixing and for some time afterwards.
• Due to the short pot life, when the paint temperature exceeds 40°C (104°F), it is recommended to use a plural-component airless spray pump.

Safety Precautions

• Although solvent-free, the coating must be handled with care; avoid inhaling spray mist and 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
• In confined spaces, provide adequate ventilation to maintain good visibility.

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

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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