Dachin Graphene 016
Epoxy graphene zinc rich coating

Main Components

Dachin Graphene 016 Epoxy Graphene Zinc-rich Paint is a two-component, low VOC, high solid, self-drying, mastic type epoxy coating. It consists of modified epoxy resin, zinc-rich powder, pure graphene, additives, and thinners.

Key Features

As a universal long-lasting primer for severe corrosive environments, Dachin Graphene 016 Epoxy Graphene Zinc-rich Paint offers the following characteristics:

1. Superior anti-corrosion performance. The graphene-enhanced coating improves electrical conductivity between zinc particles, maximizing zinc utilization in the dry film. Its lamellar structure creates a labyrinth effect, effectively blocking corrosive media penetration.
2. Excellent flexibility and impact resistance. The coating remains crack-free under ultra-thick film conditions even during high-low temperature cycling.
3. Tolerant to low-surface-profile substrates with exceptional adhesion strength.

Primary Applications

Widely used for steel structure protection in bridges, marine engineering, petrochemical, and paper industries. Complies with JT/T 722-2023 Technical Specifications for Anti-corrosion Coatings of Highway Bridge Steel Structures and HG/T 5573-2019 Graphene Zinc-rich Coatings.

Technical Specifications

Film Color & Appearance	Dark gray, smooth finish
Non-volatile content by volume, %	60±2
Specific Gravity, KG/L	2.17±0.1

Packaging

	Net Weight / Kg	Volume / L
A	34.72	14
B	3.26	3.5
Total	37.98	17.5

Basic Parameters

Mixing Ratio	Weight Ratio A︰B = 10.6︰1 Volume Ratio A︰B = 4︰1
Pot Life	5℃: 6h | 15℃: 5h | 25℃: 4h
Theoretical Coverage	Approx. 12㎡/L at 50μm DFT

Recoat Intervals

Temperature	Touch Dry	Full Cure	Recommended Overcoating Interval
			Min	Max
5℃	100 min	12 h	24 h	3 months
25℃	30 min	1 h	6 h

*Data based on standard film thickness applied on tinplate substrates.

Application Conditions

Dachin Graphene 016 can be applied via conventional spray, airless spray, or brush/roller methods.

Curing requires temperatures above 5℃. Maximum application temperature: 40℃. Paint temperature should exceed 15℃. Surface temperature must be maintained at least 3℃ above the dew point with maximum relative humidity ≤85%. Ensure surface cleanliness/dryness and adequate ventilation in confined spaces.

Mixing: Use mechanical agitation to fully redisperse settled zinc particles before adding curing agent. Maintain continuous stirring during application. Note: Zinc sedimentation accelerates under high dilution or prolonged停工 periods—intermittent agitation is critical.

Application: Multiple passes may be required when brush/rolling to achieve target film thickness. Recoat window can be extended.

Film Build: Adjustable between 50-100μm DFT depending on service requirements. This affects coverage, drying time, and recoat intervals.

Recoating: Maximum intervals depend on exposure conditions. Beyond maximum intervals, profile the surface for intercoat adhesion. Remove zinc corrosion products (white rust) via high-pressure water cleaning and hard brushing before recoating. Consult Dachin Advanced Materials for site-specific guidance.

Coating System

Topcoat: Dachin EP 550 Epoxy Mica Iron Intermediate Coat

Recommended DFT

23±3μm (as shop primer), 60±20μm (as anti-corrosion primer)

Surface Preparation

Steel substrates must be blast-cleaned to Sa2.5 (ISO 8501-1:1988) or SSPC SP10. Surface profile: Rz 40-75μm.

Inadequate profile reduces adhesion and increases cracking risk. Excessive profile may cause incomplete coverage and pitting at peaks.

Alternative: Hand-tool cleaning to St3 if blasting unavailable. Remove all contaminants (dust, oil, etc.) prior to coating.

Application Methods

Method	Thinner	Dilution Rate	Nozzle Diameter	Spray Pressure
Airless Spray	Dachin Thinner X17	0-5%	0.43-0.53mm	22MPa
Conventional Spray	Dachin Thinner X17	0-10%	1.8-2.2mm	0.3-0.6MPa
Brush/Roller	Dachin Thinner X17	5-10%	-	-

*Dilution ratio by volume.