S61-30 Polyurethane Heat-Resistant Anticorrosive Coatings


Primer: polyisocyanate prepolymer, hydroxyl resin, pigment/filler, additive, solvents, etc. Two-component (A and B) package.

Topcoat: polyisocyanate prepolymer, hydroxyl resin, heat-resistant pigment/filler, additive, solvents, etc. Three-component (A, B and C) package.

Corrosion prevention of pipeline for stream and chemical transmission, and steel structures under 160℃ condition. 

Good corrosion prevention, adhesion and flexibility, excellent resistant to chemicals, abrasion and insulating, resistant to 160℃, air curing, having good binding force with inorganic zinc rich primer. 

Physical Parameter:
Color: Topcoat: aluminum, Primer: iron red

Specific Gravity: Primer: approx. 1.25 kg/L, Topcoat: approx. 1.10 kg/L,

Theoretic Dosage: Primer: 0.13 kg/m2, Topcoat: 0.12 kg/m2

Film Thickness: Primer: WFT: 118μm  DFT: 96μm, Topcoat: WFT: 96μm  DFT: 30μm

Flash Point: Component A: 37 ℃, Component B: 30 ℃

Drying Time: 25℃,  Dust-Free: ≤3 h, Hard Drying: ≤24 h, Fully Curing: 7 d

Storage: Component A: 1 year, Component B: 6 months


Application Parameter:
Formula Ratio:    Primer: Component A:Component B=6:1

Topcoat: Component A:Component B: Component C (aluminum powder)=3:3:1

Curing Time: 25℃, Fully mixing after use

Pot Life: 25℃, 6 h

Coating Method: High-pressure airless spray, hand brushing, roll coating

Diluent/Dilution Ratio: Primer: 105 polyurethane coatings diluent, <5%

Coating Interval: Primer: 0℃, Min. 8 h, Max.72 h; 25℃, Min.3 h,  Max. 48 h; 35℃, Min.2 h,  Max. 12 h;

Surface Treatment: Surface of steel should be out of grease, floating dust or water trace. Impact cleaning or sand blasting of steel surface till qualified Sa2.5, or hand cleaning and kinetic machine derusting till to St3 Standard of Sweden.

Recommended Layers: 2 layer of high-pressure airless spray, followed by 2 layers of topcoat, 120μm DFT

The data in this Specification is derived from experiments and practical applications, and can be regarded as a guide for application. The title product is only for specialty application. Otherwise we only guarantee the quality of the said coating itself if it is used in other sectors undescribed herein or fresh sectors. 

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