SF ZINC PRIMER Rapid-dry Epoxy Zinc Dust Shop Primer

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Key properties

• Suitable for both automated spraying and manual application.
• Excellent anti-corrosion properties
• Good fast-drying performance
• A very wide range of compatible subsequent coatings
• A multipurpose shop primer suitable for both shop application and site work

Colour and gloss

• Grey
• Flat

Basic data at 20 °C (68 °F)

Parameters after mixing

9.0 m²/L at 30 µm (361 in²/US gal at 1.2 mil)

Curing agent: at least 24 months, stored in a dry and cool environment. Note: refer to the supplementary data sheet - theoretical spreading rate and dry film thickness reference table.

Recommended substrate condition and temperature

Immersion environment

• Bare steel or surfaces with incompatible inorganic zinc silicate shop primer must be blast cleaned (dry or wet blasting) to Sa 2½ of ISO 8501-1, with a surface roughness

of 30-75 µm (1.2-3.0 mil).

• Surfaces coated with confirmed compatible inorganic zinc silicate shop primer: welds and areas where the shop primer is damaged or failed must be abrasive blast cleaned to Sa 2½ of international standard

ISO 8501-1, with a roughness of 30-75 µm (1.2-3.0 mil); or in some cases, power tool preparation to Pt3 of SPSS standard may be accepted.

IMO resolution MSC.215(82) on the technical requirements for ballast tanks

• Pretreated surfaces coated with confirmed compatible inorganic zinc silicate shop primer: welds and damaged or failed areas of the shop primer must be

abrasive blast cleaned to Sa 2½ of international standard ISO 8501-1, with a surface roughness of 30-75 µm (1.2-3.0 mil).

• Steel plate surfaces coated with approved inorganic zinc silicate shop primer; welds and damaged or re-rusted areas of the shop primer must be blast cleaned to international standard ISO

Sa 2½, with a surface roughness of 30-75 µm (1.2-3.0 mil).

• For IMO type-approved shop primers: no additional requirements
• For surfaces with shop primer without type approval (IMO SSPC TAC): full abrasive blast cleaning to Sa 2 of international standard ISO 8501-1,

and ensure that at least 70% of the intact shop primer is removed, with a surface roughness of 30-75 µm (1.2-3.0 mil).

• Dust particle sizes of grades 3, 4 and 5 are permitted at a surface cleanliness of grade 1 of ISO 8502-3:1992, but any small dust particles visible to the naked eye

shall be removed completely.

Atmospheric exposure environment

• Bare steel; blast cleaning to Sa2½ of ISO 8501-1, with a profile of 30–75 µm, or to St3 of ISO 8501-1.
• Shop-primed steel surfaces: cleaned to SPSS Pt3 / SSPC SP3
• Galvanised surfaces: for dry atmospheric environments, abrading only; for immersed environments in water, sweep blasting is required.

Substrate temperature and application conditions

• During application and curing, the substrate temperature must be above -5 °C (23 °F).
• During application and curing, the substrate temperature must be at least 3 °C (5 °F) above the dew point
• During application and curing, the relative humidity must not exceed 85%

Instructions for use

Mixing ratio by volume: base : curing agent = 80 : 20

• Before application, mix the paint thoroughly with a power agitator.
• Stir continuously during application.

Pot life after mixing

24 h at 20 °C (68 °F)

Air spray

Airless spray (single-feed pump)

Brush/roller

Supplementary parameters

Film thickness and spreading rate

Overcoating interval table for coatings at 30 µm (1.2 mil) dry film thickness

Curing schedule for coatings at 30 µm (1.2 mil) dry film thickness

Note: ensure continuous, adequate ventilation during application and curing (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 steel surface preparation, refer to Information Sheet 1490
• PPG Marine & Industrial Coatings ballast tank application process

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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