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Epoxy Resin

Epoxy resin is one of the best-performing thermosetting resins, renowned for its excellent adhesion, mechanical strength, chemical resistance, and electrical insulation properties. It is widely used in heavy-duty anti-corrosion coatings, electronic packaging, structural adhesives, and composite materials, making it an indispensable key material in the coatings, electronics, adhesives, and composite materials industries.

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Product Description

In the field of anti-corrosion coatings, epoxy resin is the backbone film-forming material for heavy-duty anti-corrosion coatings, exhibiting excellent adhesion, salt spray resistance, and chemical penetration resistance. It is the preferred base material for anti-corrosion coatings for ships, bridges, pipelines, and storage tanks. In the electronics field, epoxy resin is a core material for semiconductor packaging and PCB copper-clad laminates, playing a decisive role in the reliability and performance of electronic components. Products are available in multiple grades and types, including liquid/solid, water-based/solvent-free, bisphenol A/bisphenol F/phenolic, flame-retardant, coating grade/electronic grade/adhesive grade/composite material grade, etc., to meet the diverse needs of customers in different industries. Our products strictly adhere to national standards such as GB/T 13657-2019, support small-batch trial orders and customized packaging, and rely on major ports such as Qingdao Port, Tianjin Port, and Shanghai Port for efficient and worry-free export throughout the entire process.

Product Information

ItemDescription
Product NameEpoxy Resin
CAS No.61788-97-4 (Bisphenol A Type)
EINECS No.618-237-9
Molecular FormulaPolymeric, no fixed formula
AppearanceColorless to light yellow transparent liquid (low MW), or yellow to amber solid (high MW)
Main TypesBy Form: Liquid Epoxy Resin (low MW, good flowability, for coatings, casting, impregnation, adhesives); Solid Epoxy Resin (high MW, for powder coatings, molding compounds, electronic encapsulation); Waterborne Epoxy Resin (low VOC, eco-friendly, for waterborne coatings, concrete protection); Solvent-Free Epoxy Resin (zero VOC, for food contact coatings). By Chemical Structure: Bisphenol A (DGEBA) – most common type (70%-80% of total epoxy production), cost-effective, balanced performance; Bisphenol F – lower viscosity, better chemical resistance and toughness; Novolac Epoxy – excellent heat and chemical resistance; Flame Retardant Epoxy – brominated/phosphorus-containing, UL94 V-0 compliant. By Application: Coating Grade (anticorrosive, floor, marine, automotive); Electronic Grade (semiconductor encapsulation, PCB laminates, LED packaging – high purity, low chloride); Adhesive Grade (structural, electronic, construction, automotive); Composite Grade (carbon fiber/glass fiber composites, aerospace, sports goods).
Key Physical & Chemical PropertiesAppearance: Colorless to light yellow liquid or yellow to amber solid; Density: 1.10-1.20 g/cm³; Epoxy Value: 0.10-0.55 eq/100g; Softening Point (solid): 60-150℃; Viscosity (liquid, 25℃): 500-15000 mPa·s; Solubility: soluble in ketones, esters, aromatic solvents, insoluble in water; Curing: crosslinks with amines, anhydrides, phenolics; Cured Properties: high strength, high hardness, high adhesion, chemical resistance, excellent electrical insulation; Low shrinkage (0.2%-0.5%).
Typical Specifications (Bisphenol A Liquid Resin)Epoxy Equivalent Weight: 184-194 g/eq; Epoxy Value: 0.51-0.54 eq/100g; Viscosity (25℃): 10000-15000 mPa·s; Color (APHA): ≤40; Hydrolyzable Chlorine: ≤500 ppm; Volatiles: ≤1.0%.
FeaturesExcellent mechanical properties (high strength, hardness, impact resistance); excellent adhesion to metals, glass, ceramics, wood, plastics; good chemical resistance (acids, alkalis, salts, oils, organic solvents); excellent electrical insulation (volume resistivity 10¹⁴-10¹⁶Ω·cm); low shrinkage (0.2%-0.5%); versatile curing (room temp, heat, UV); solvent-free eco-friendly options; adjustable heat resistance (up to 150-250℃).
Main ApplicationsCoatings (largest application, ~40%-50% of consumption) : Heavy-duty anticorrosive coatings (ships, bridges, pipelines, tanks, marine, petrochemical – epoxy is the main film-former for heavy-duty anticorrosion); Floor coatings (industrial, garage, cleanroom); Powder coatings (appliances, automotive parts, metal products, pipe coating); Waterborne coatings (industrial, architectural); Marine coatings; Automotive coatings (primers, intermediate coats, electrocoat); Pipe coatings (FBE fusion bonded epoxy – for oil and gas pipelines).
Electronics/Electrical (high-value application) : Semiconductor encapsulation (IC, LED, power devices); PCB laminates (base material for printed circuit boards); Insulation materials (motor, transformer, switchgear); Electronic component encapsulation; Electrical casting (insulation casting for transformers, insulators); PCB substrate materials.
Adhesives: Structural adhesives (metal-metal, metal-composite for aerospace, automotive, construction); Electronic adhesives (chip bonding, substrate bonding, SMT); Construction adhesives (concrete repair, crack injection, anchor bolt adhesive, stone dry-hang); Automotive adhesives (structural, windshield); Marine adhesives (hull bonding – weld-free); General adhesives (crafts, household, DIY).
Composites: Carbon fiber composites (aerospace, sports equipment, automotive lightweighting); Glass fiber composites (FRP for wind turbine blades, marine, pipes, tanks, building reinforcement); High-performance composites (military, aviation, space, sports).
Others: Casting compounds (HV insulation casting); Industrial/antistatic flooring; Road/bridge repair; Concrete structure reinforcement; Anti-corrosion linings (pipe, tank, chemical equipment).
Packaging20kg/200kg drums (steel or plastic), 1000kg IBC totes, tank trucks; custom packaging available.
Storage ConditionsStore in cool, dry, well-ventilated area, away from direct sunlight and heat sources; keep sealed to prevent moisture and contamination; avoid mixing with curing agents (amines, anhydrides) to prevent premature curing; shelf life 12-24 months.
Shipping RequirementsTypically non-hazardous cargo (non-dangerous); protect from sun and rain; handle with care.
Quality StandardsChina: GB/T 13657-2019; Export reference: ASTM D1763, ISO 3673-1.


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FAQ

Q1: Is Huafeng Chemical a manufacturer or a trader?
A: We are a professional service provider specializing in chemical foreign trade. Rather than being limited to the products of a single factory, we leverage the chemical industry cluster in Shandong Province to integrate production resources from multiple high-quality manufacturers. This allows us to offer a wide range of sourcing options—covering various product categories and origins—instead of simply pushing a single product. Furthermore, our core competitiveness lies in our professional foreign trade services (covering documentation, logistics, and regulatory compliance), ensuring a smooth and worry-free procurement process for you.


Q2: How is the security of my transaction guaranteed when working with Huafeng Chemical?
A: We strictly adhere to international trade rules (Incoterms® 2020) and accept various payment methods, such as Letters of Credit (L/C) and Telegraphic Transfers (T/T). For new clients, we support small-batch trial orders and can clearly define arbitration clauses and applicable laws within the contract. Additionally, we maintain a robust risk management system to help you mitigate common trade risks, such as exchange rate fluctuations, shipping delays, and document discrepancies.


Q3: Do you have experience serving clients in Russian-speaking regions?
A: Yes. We place great importance on the Russian-speaking market; our team includes Russian-speaking business professionals who are well-versed in the import regulations of Russia and the Eurasian Economic Union (EAEU). We understand the importance of EAC certification to clients in these regions and can assist with related compliance inquiries. We have established connections with chemical traders across various CIS countries and have gained valuable experience in specialized packaging and temperature-controlled shipping designed to withstand harsh local winter conditions.


Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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