Solvent-Free Epoxy Intermediate Coating DFC-301

DryFiX DFC-301 Solvent-Free Epoxy Midcoat: Areas of Application

DryFiX DFC-301 is a premium solvent-free intermediate coat (midcoat) system designed to maximize the lifespan and performance of the final topcoat in industrial floors.

• Heavy Industry & Logistics: Aircraft hangars, automotive assembly workshops, heavy-load factories, warehouses, and indoor parking garages.
• High Hygiene & Healthcare: Pharmaceutical facilities, hospital operating rooms, food processing plants, and potable water tanks.
• Critical Infrastructure: Power plants and chemical production zones. By adding substantial thickness to the floor profile, it acts as a flawless shield against heavy static and dynamic loads.

DryFiX DFC-301 Solvent-Free Epoxy Midcoat: Technical Specifications and Performance Values

DryFiX DFC-301: Professional Application Instructions and Site Procedures

1. Substrate Condition and Surface Preparation

The fundamental rule for achieving flawless adhesion is that the concrete substrate must be structurally sound, clean, and properly profiled. The floor to be coated must be completely free of any oil, grease, cement laitance, dust, sawdust, frost, and old paint residues that could hinder epoxy bonding. Loose particles on the surface must be removed, and mechanical surface preparation (grinding, scarifying, or shot-blasting) must be performed, followed by the complete removal of all dust using industrial vacuum equipment.

2. Component Integration (Mixing Preparation)

DryFiX DFC-301 is a professional two-component system. After Component A (Resin) is briefly stirred within itself, Component B (Hardener) must be added entirely into the main component.

• Critical Rule: The mixing ratio must be strictly adhered to, and partial mixing of components is absolutely prohibited. It must be mixed for at least 3-4 minutes using a low-speed epoxy mixer (300-400 rpm) until a homogeneous, smooth, and air-bubble-free consistency is achieved. Once the mixing is complete, the product must be applied to the surface without delay (strictly observing the pot life).

3. Primer Layer and Scratch Coat (Mid-Coat) System

• Infrastructure Preparation: Before proceeding with the DFC-301 mid-coat application, the concrete floor must be primed with DryFiX DFC-100 and broadcasted with quartz sand while wet to create a mechanical key.
• Scratch Coat Application: Applied over the primed and swept surface, DFC-301 is forcefully scraped onto the floor using a steel trowel to form a "scratch coat". This process fills all capillary voids in the concrete, eliminates surface irregularities, and creates a 100% flat, shock-absorbing, and flawless infrastructural armor for the subsequent top-coat application.

4. Critical Site Conditions and Concrete Tolerances

• Mechanical Values: The concrete substrate where the epoxy system will be applied must have a minimum compressive strength of 25 N/mm² and a minimum surface pull-off strength of 1.5 N/mm². On highly absorbent substrates, the priming process must continue coat upon coat until full surface saturation is achieved.
• Climatic Conditions: Application must be strictly avoided in environments where the ambient and surface temperatures are below +10°C or where relative humidity is excessively high.
• Negative Water Pressure Risk: Even after the floor has fully cured, pressurized moisture or water leakage originating from lower layers (negative side) can cause the epoxy system to detach from the surface (blistering). Foundational waterproofing measures must be in place to prevent these risks.

5. HSE (Health, Safety, and Environment) Procedures

This product is intended for professional industrial use only.

• Ensure adequate ventilation during indoor applications.
• Appropriate Personal Protective Equipment (PPE) such as safety gloves, goggles, and masks must be worn during application; skin and eye contact with the material must be strictly avoided, and it must never be inhaled or swallowed.
• Necessary precautions must be taken against fire and explosion risks. Refer to the product's Material Safety Data Sheet (MSDS) for detailed safety information. To prevent environmental pollution, waste must be disposed of in accordance with local regulations.

6. Logistics and Storage Standards

• Product packaging must be stored in dry, enclosed areas at temperatures between +5°C and +35°C.
• It must not be exposed to direct sunlight, extreme heat, or frost.
• Since components in opened packages can react upon contact with air, they must be stored with the lid tightly sealed to prevent air ingress and should be consumed within a short period.