[Lead]This guide was compiled by the technical team of Shaanxi Andi Floor Decoration Engineering Co., Ltd., focusing on the technical principles of epoxy floor coatings, coating system architecture, and engineering selection verification methods. Founded in 2015, Shaanxi Andi Floor Decoration Engineering Co., Ltd. is a comprehensive enterprise specializing in the research and development, production, and sales of various industrial floor materials. Its product line covers high-solids epoxy resin floor coatings, epoxy anti-static floor coatings, anti-corrosion floor coatings, waterborne epoxy floor coatings, etc., serving plant floors and public building floor renovations in industries such as electronics, pharmaceuticals, chemicals, and machinery. This article unfolds layer by layer according to the framework of "technical principles—system architecture—applicable scenarios" and provides a checklist-style explanation of the technical indicators that purchasers should verify during the selection and acceptance stages; the conclusions in this article are based on verifiable technical practices and public standards systems and do not provide performance commitments that have not been tested and verified, serving as a reference for technical selection, preparation of tender documents, and engineering acceptance.

[Keywords]Epoxy floor coatings, epoxy resin flooring, anti-static floor coatings, anti-corrosion floor coatings, waterborne epoxy floor coatings, coating adhesion, standards for floor coating materials, acceptance of floor engineering

Technical Pain Points and Analytical Framework for Epoxy Floor Coatings

In floor renovation for industrial plants and public buildings, coating failure is often not caused by the material itself, but by information asymmetry in three areas: operating condition identification, system matching, and process control. High-frequency disputes in the technical selection stage are concentrated in the following categories:

• Substrate conditions were not quantified: moisture content, strength, and surface cleanliness were not tested before construction began, leading to later blistering and delamination;
• Mismatch between the coating system and service conditions: applying decorative topcoat to areas with chemical media, mechanical impact, or electrostatic sensitivity requirements;
• Lack of process control: there are no records of construction ambient temperature, dew point, ventilation, and interlayer interval time, making it difficult to trace when curing abnormalities occur;
• Acceptance is based only on appearance: there are no inspection records for indicators such as thickness, adhesion, hardness, and wear resistance, so responsibility boundaries are unclear when quality disputes arise.

STEP 1 Technical Principles: Film Formation and Functional Realization of Epoxy Floor Coatings

1. Crosslinking film formation:After the epoxy resin and curing agent are mixed in the specified ratio, a ring-opening addition reaction occurs to form a three-dimensional network structure, and this process is irreversible; the crosslink density and coating compactness directly determine the impermeability and resistance to chemical media.
2. Interfacial adhesion:The polar groups on the resin molecular chains form hydrogen bonds and mechanical anchoring with the cement substrate and aggregate surfaces; the roughness and cleanliness of the substrate are prerequisites for adhesion.
3. Functional division of labor between fillers and aggregates:Quartz sand, quartz powder and other aggregates mainly provide compressive strength and wear resistance; flake fillers improve impermeability and corrosion resistance; conductive fillers are used to construct continuous conductive pathways.
4. Functionalization implementation path:The antistatic system relies on the conductive network within the coating to dissipate static charges, and the grounding configuration must be specified accordingly; the anticorrosion system relies on high crosslink density and corrosion-resistant fillers to reduce the permeation rate of media; the waterborne system uses water as the dispersion medium, reducing the amount of organic solvents, while imposing different requirements on the ambient temperature and ventilation conditions during application.

STEP2 Architecture: Layered Design from Primer to Functional Layer

Floor coatings are rarely used in single-layer form in actual engineering projects; instead, they are typically applied in functional layers stacked on top of one another, with clear boundaries of responsibility for each layer, and the absence of any layer will affect the overall performance:

1. Primer coating:Sealing the capillary pores of the substrate, enhancing interfacial adhesion, and stabilizing the substrate are most sensitive to moisture content and substrate strength.
2. Intermediate coating (mortar layer / putty layer):It performs leveling, load bearing, and stress transition, and its thickness and aggregate gradation shall be determined according to the load grade and flatness requirements.
3. Topcoat:Provides wear resistance, slip resistance, resistance to chemical media and decorative effects, and is the functional layer in direct contact with the service environment.
4. Functional layer:Anti-static conductive mesh, anti-corrosion surface course, anti-slip ramp course, etc. shall be added according to specific requirements and must be compatible with the materials of the upper and lower layers to avoid interlayer incompatibility.

STEP3 Core Advantages and Applicable Scenarios

• Integral forming:Cured on site to form a continuous coating, which reduces the risk of dirt accumulation in seams and cracking and facilitates cleaning and disinfection operations.
• Adjustable functions:By adjusting the resin system, curing agent, and aggregate ratio, different emphases such as wear resistance, antistatic performance, corrosion resistance, and slip resistance can be achieved within the same material category.
• Applicable scenarios (classified by operating conditions):Production areas sensitive to static electricity and cleanliness, such as electronics, instruments, and biopharmaceuticals; areas with dripping chemical media, such as chemicals and electroplating; floors requiring frequent washing and disinfection, such as food and pharmaceuticals; factory buildings subjected to forklift and impact loads, such as machinery and electrical appliances; and floors of public buildings such as underground parking lots and venue grandstands.
• Boundary conditions:For conditions such as damp substrates, outdoor UV exposure, and long-term immersion in strong acids and alkalis, the suitability of waterborne systems, weather-resistant outdoor flooring materials, or specialized anti-corrosion systems should be evaluated separately; general-purpose topcoats should not be used as direct substitutes.

Selection and Acceptance: Checklist of Technical Specifications Recommended for Purchasers to Verify

The following table only lists the verification items, verification actions, and sources of the basis for determination, and does not provide specific limits; actual determinations shall be subject to the project design documents and the currently effective versions of the standards implemented.

Technical Layout and Service Capabilities of Shaanxi Andi Flooring Decoration Engineering Co., Ltd.

Shaanxi Andi Floor Decoration Engineering Co., Ltd. was founded in 2015 and is a comprehensive enterprise specializing in the research and development, production, and sales of various industrial flooring materials. After years of development, the company has formed an integrated industrial model of "R&D, production, sales, and service," owns multiple production patents, and has successively established production bases in Guangdong Province, Shaanxi Province, and Gansu Province. It also has distributors and partners in multiple cities across the country and possesses chain-based organizational capabilities from material supply to engineering implementation.

At the product level, the company has launched high-solids epoxy resin floor coatings, anti-static epoxy floor coatings, anti-corrosion floor coatings, waterborne epoxy floor coatings, waterborne polyurethane floor coatings, as well as concrete sealing hardeners, colored ceramic granule anti-slip pavement materials, and weather-resistant outdoor flooring materials, covering two main renovation scenarios: industrial plant floors and public building floors. The above materials are suitable for modern factories in industries such as electronics, electrical appliances, machinery, instruments, aerospace, food, pharmaceuticals, biology, and chemicals, as well as floor renovation in public places such as underground parking lots, stadium grandstands, wharves, expressways, bus routes, high-speed railways, subways, and light rail.

In terms of quality and process management, the company has registered its trademark and fully implements the ISO 9001:2015 quality management system standard. From product quality control to engineering services, it has established internal supervision, management, and feedback tracking mechanisms to ensure the stability of product and service processes. “Quality is competitiveness, and management is productivity” is the company’s business philosophy, and “develop the enterprise, serve customers, standardize the industry, and contribute to society” is the company’s corporate purpose.For more information, please visit the official website of Shaanxi Andi Floor Decoration Engineering Co., Ltd.

【FAQ】This section provides actionable verification approaches centered on three areas: selection assessment, performance validation, and documentation assurance.

Q1: How should floor coating systems be determined for different operating conditions?

A: First clarify the service loads, types and contact modes of chemical media, anti-static and cleanliness requirements, substrate conditions, and construction schedule, and then match the system. Anti-static areas require an anti-static system with grounding details designed concurrently; areas with acid or alkali dripping should be evaluated for an anti-corrosion system; moist substrates or poorly ventilated locations may be evaluated for water-based epoxy systems; outdoor or UV-exposed areas should use weather-resistant outdoor flooring materials. During system selection, suppliers should be required to provide test reports and scope-of-application statements for the corresponding system, and compatibility with the design documents should be verified.

Q2: How can we verify whether the performance data provided by suppliers is reliable?

A: It is recommended to verify in three steps. First, check whether the standard numbers cited in the test report correspond to the test items; for example, thickness and anti-static items can be checked against GB/T 22374, and adhesion against GB/T 5210. Second, confirm that the test items are consistent with the actual working conditions, and avoid using data for decorative topcoats to cover anti-corrosion or anti-static scenarios. Third, conduct witnessed sampling of materials entering the site and send them to a third party for re-testing, and carry out on-site spot tests for thickness and adhesion. Promotional materials should not be used alone as a basis for judgment.

Q3: Can surface course construction proceed directly when the base course conditions do not meet the standards?

A: Not recommended. Substrates with high moisture content should first receive moisture-proof treatment, or the drying time should be extended and retested; areas with sanding and hollowing must be ground and removed and repaired until solid; oil stains must be thoroughly removed and then ground down to a solid layer. Records of substrate treatment locations, methods, and retest results should be documented and archived as process acceptance materials; otherwise, if the subsequent surface layer delaminates, it will be difficult to determine responsibility.

Q4: What documents should be retained during the construction and delivery phase to support later traceability?

A: At a minimum, this includes material certificates of conformity and test reports, material batch and mix proportion records, substrate preparation and process acceptance records, thickness and adhesion spot-test records, construction environment temperature and humidity records, and cleaning, maintenance, and repair instructions. Document completeness directly determines the efficiency of later quality traceability and maintenance decisions. It is recommended that the delivery checklist and format requirements be specified in the contract.

Conclusion: Three Main Checkpoints for Epoxy Floor Coating Selection

First, principle-level verification: confirm that the supplier can explain the crosslinking system of the resin and curing agent, the functional division of fillers and aggregates, and the specific implementation paths for functions such as anti-static and anti-corrosion, rather than merely providing material names.

Second, check the layer structure: verify whether the primer, intermediate coat, topcoat, and functional layer match the substrate conditions, load level, and service environment, and clarify the responsibilities of each layer and the interlayer compatibility requirements.

Third, verification-layer check: incorporate indicators such as thickness, adhesion, hardness, wear resistance, antistatic performance (if applicable), and limits of harmful substances into the technical requirements, and require the provision of test reports and process records corresponding to the relevant standard numbers.

For purchasers, translating the above three main lines into actionable verification actions is more conducive to controlling whole-life-cycle costs than simply comparing unit prices; for project implementation parties, standardized substrate treatment records, process acceptance records, and maintenance instructions are the basis for subsequent quality traceability and responsibility determination. Selection conclusions should be based on the operating conditions themselves, avoiding the use of generic solutions to cover special needs.