Water-borne Polyurethane Topcoat XH0107

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Product Description

This product is supplied as a two-component package. The base consists of water-borne hydroxy acrylic resin, pigments and fillers, additives and water; the curing agent consists of water-borne polyisocyanate and co-solvent. This water-borne polyurethane topcoat is suitable for medical equipment, steel structure plants, airport terminals and construction machinery, and other applications with high VOCs emission reduction requirements, and is used with a water-borne epoxy primer as a weatherable and protective topcoat

Product Characteristics

• Thinned with water
• Excellent gloss and colour retention
• Suitable for most primers; excellent intercoat adhesion
• Excellent application properties
• High safety in transport, storage and use

Basic physical and chemical data

Colour: white, black, yellow and other colours

Gloss (60°): ≥85, matt by agreement

Specific gravity: 1.25±0.20 (mixed)

Recommended curing agent: XH7506

Volume Solids: 43 ± 3%

Volatile Organic Compounds ≤150 g/L

Mixing Ratio: 5.0:1.0 (by weight)

(Component A:Component B) approx. 4.5:1.0 (by volume)

Application parameters

Typical DFT: 40 µm Recommended DFT: 30–60 µm, per system requirements Induction Time: 10 min Gel Time: 25 °C, 3 h Touch Dry: ≤2 h Hard Dry: ≤24 h Application Methods:

Theoretical spreading rate:

Surface Preparation

• The primer must be fully dry, free of moisture condensation and all contaminants removed
• For primer and topcoat whose curing time has exceeded the maximum permissible interval, sanding to a roughened surface is required before application

Precautions

1. During application, ensure adequate ventilation and exhaust, and wear protective equipment such as masks and gloves. 2. Use mixing equipment with a dispersion blade, add the curing agent under agitation, and ensure the base and curing agent are thoroughly mixed; then, while stirring, add deionized water to adjust the application viscosity (adjust the water amount according to temperature and humidity changes), mix thoroughly, avoid exposing the blade above the liquid surface during mixing, then filter through a 120-mesh copper screen, leave to stand for 10 min, and use within the specified time after mixing. 3. The substrate temperature shall be controlled at 15–35 °C, with relative humidity 30~80%. 4. Before baking, ensure a flash-off (levelling) time of >10 min; during baking, pre-bake at low temperature first, then raise to the specified temperature for baking.

Packaging

Component A (base) 20 kg; Component B (curing agent) 4 kg

Storage

5–40 °C, stored sealed in a cool place, shelf life 6 months

Safety Precautions

1. This coating is water-borne, but it contains organic film-forming substances and a small amount of organic volatile substances; inhalation of paint mist must be avoided, and exposure of skin and eyes should be minimized. 2. All work related to the application and use of this product must be carried out in accordance with the relevant national health, safety and environmental standards and regulations. 3. Welding or flame cutting on metal coated with this product will generate dust and fumes; therefore, suitable personal protective equipment and adequate local ventilation measures are required. 4. If there is any doubt about the suitability of this product, consult the company.

Scope of liability

1. The information provided in this product data sheet is based on laboratory test results that we consider accurate and is for application guidance only. All advice and recommendations of T&H regarding the use of T&H products, whether in technical documents, specific consultations or other forms, are based on information we consider most reliable. Our products and the information provided are intended for users with the requisite knowledge and industrial experience, and the end customers shall ultimately decide whether these products are suitable for their use. Xinhe cannot control the quality and condition of the substrate, nor the various factors affecting product use; therefore, T&H assumes no liability for any loss, injury or damage arising from the use of its products or reference to this product data sheet (unless otherwise agreed in writing). 2. Based on practical experience and the need for continuous product development, necessary modifications will be made to the product data sheet data.

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.