Haute Pureté Résines Époxy Faible Chlore Basse Viscosité

Chlore in epoxy resins exists in two forms: total chlorine (bound in the polymer structure) and hydrolyzable chlorine (reactive and easily released). Hydrolyzable chlorine is particularly dangerous because it can form chloride ions in the presence of moisture.

These chloride ions cause three major failure modes in electronics:

• Electrochemical migration: Chloride ions enable metal ion migration between conductors under voltage bias, creating dendrites that cause short circuits
• Copper corrosion: Chloride directly attacks copper traces, especially in humid environments, degrading connections over time
• Reliability failures: Both mechanisms lead to field failures that may occur months or years after deployment

For semiconductor packaging, industry standards typically require total chlorine <500 ppm and hydrolyzable chlorine <100 ppm. For advanced applications like automotive-grade semiconductors, specifications tighten to total chlorine <50 ppm and hydrolyzable chlorine <10 ppm.

IndexChem's ultra-high purity grades (UH series) achieve these demanding specifications, meeting JEDEC and IPC reliability standards.

The key differences relate to viscosity, crystallization behavior, and application suitability:

Bisphenol A (BPA) Epoxy (ZLA Series):

• Viscosité: 3,500-14,000 mPa·s at 25°C
• Most widely used epoxy type with excellent mechanical properties
• Can crystallize at lower temperatures, but crystallized resin can be remelted
• Best for: EMC encapsulants, die attach, electronic adhesives, general coatings

Bisphenol F (BPF) Epoxy (ZLF Series):

• Viscosité: 1,000-3,500 mPa·s at 25°C — significantly lower than BPA
• Lower crystallization tendency, better storage stability
• Slightly higher chemical resistance
• Best for: Vacuum infusion (wind blades), underfill, applications requiring excellent flow

Practical guidance: Choose BPA (ZLA) for general electronics and encapsulation. Choose BPF (ZLF) when you need low viscosity for better flow—vacuum infusion, fine-pitch dispensing, or gap filling.

Semi-conducteurs packaging applications have tiered requirements based on reliability needs:

Standard semiconductor applications:

• Total chlorine: <500 ppm
• Hydrolyzable chlorine: <100 ppm
• Suitable for consumer electronics with standard lifecycles
• IndexChem grades: ZLA-175S, ZLA-185S

High-reliability applications (industrial, medical):

• Total chlorine: <100 ppm
• Hydrolyzable chlorine: <50 ppm
• IndexChem grades: ZLA-175U, ZLA-185U

Automotive and aerospace (highest reliability):

• Total chlorine: <50 ppm
• Hydrolyzable chlorine: <10 ppm
• Must meet JEDEC and AEC-Q100 reliability standards
• IndexChem grades: ZLA-175UH, ZLA-185UH

Additional considerations: viscosity appropriate for dispensing method, Tg (glass transition temperature) for operating temperature, and CTE (coefficient of thermal expansion) matching.

Wind turbine blade manufacturing requires epoxy resins optimized for vacuum infusion processing of large composite structures. Key requirements:

Critical properties for blade infusion:

• Low viscosity: 1,000-3,000 mPa·s for complete fiber wet-out and long flow distances (blades can exceed 100m)
• Extended pot life: Large parts require hours of working time
• High mechanical strength: Fatigue resistance for 20+ year service life
• Good adhesion: Bond strength to glass and carbon fiber reinforcement

IndexChem recommended products:

• ZLF-160 Series: Bisphenol F epoxy, 1,000-1,400 mPa·s, ideal for main spar and blade shell infusion
• ZLV-165/175 Series: Blended A/F epoxy, cost-optimized for large-volume blade production

These products support Europe's offshore wind expansion, including installations from Danemark to Espagne targeting 425 GW capacity.

Epoxy resins serve multiple critical functions in EV battery packs:

Key applications:

• Structural bonding: Bonding cells into modules and modules into packs, providing mechanical strength and crash resistance
• Thermal management: Thermally conductive epoxy adhesives transfer heat from cells to cooling plates
• Potting and encapsulation: Protecting battery management system (BMS) electronics from vibration, moisture, and thermal cycling
• Cell-to-pack bonding: Direct cell integration eliminating module housings for higher energy density

Requirements for EV battery epoxies:

• Operating temperature range: -40°C to +85°C (or higher for performance vehicles)
• Flame retardancy for safety compliance
• Low outgassing to prevent cell contamination
• Excellent adhesion to aluminum, steel, and composite housings

IndexChem supplies European EV gigafactories in Allemagne, Hongrie, Pologne, and France with high-purity epoxy resins that meet automotive reliability standards.

Yes, all IndexChem epoxy resin products are fully REACH compliant for the European Union market.

What this means for customers:

• All products are registered under REACH (Registration, Evaluation, Authorisation and Restriction of Chemicals) regulation EC 1907/2006
• Seamless import across all 27 EU member states
• No regulatory barriers or additional registration requirements for customers

For UK customers (post-Brexit):

• Separate UK REACH compliance maintained for Great Britain market
• Northern Irlande follows EU REACH under the Windsor Framework

Documentation provided:

• Technique Data Sheets (TDS) for all products
• Safety Data Sheets (SDS) in required languages
• Batch-specific Certificates of Analysis (CoA)
• REACH registration confirmation on request

IndexChem maintains strategic inventory in Europe for faster delivery to customers across the continent:

Standard delivery times:

• Benelux (Pays-Bas, Belgique, Luxembourg): 2-3 jours ouvrables
• Allemagne, Autriche, Suisse (DACH): 3-4 jours ouvrables
• France: 3-4 jours ouvrables
• Royaume-Uni: 3-4 jours ouvrables
• Italie, Espagne, Pologne: 4-5 jours ouvrables
• Nordics, Portugal, Eastern Europe: 5-7 jours ouvrables

Shipping options:

• DDP (Delivered Duty Paid): We handle all customs and duties — product arrives ready to use
• DAP (Delivered at Place): Customer handles import clearance
• Express shipping: Available for urgent requirements

For stock availability and exact lead times for your location, contact us at info@indexchem.eu.

IndexChem offers equivalent or superior specifications at 20-40% lower total cost of ownership compared to established premium suppliers.

How we achieve this:

• Efficient manufacturing: Modern, vertically integrated production facility optimized for high-purity products
• Streamlined supply chain: Direct manufacturer relationship without multiple distribution layers
• Lower overhead: Lean operations focused specifically on electronic-grade epoxy resins

What you get:

• Same chlorine specifications (down to <50 ppm total, <10 ppm hydrolyzable)
• Equivalent viscosity and EEW ranges
• Full REACH compliance and documentation
• Local European support with faster response times

No quality compromise: The savings come from supply chain efficiency, not from cutting corners on product quality. Your customers receive the same reliability they expect, while your margins improve.

We provide complimentary technical samples to qualified industrial customers for evaluation purposes.

Sample process:

• Step 1: Contact us with your application requirements — industry, end product, current materials, and key specifications needed
• Step 2: Our technical team recommends the optimal product grade for your application
• Step 3: We ship evaluation samples (typically 500g-1kg) with full TDS, SDS, and CoA documentation
• Step 4: Technique support available throughout your evaluation process

What you receive:

• Production-representative samples (not lab-only grades)
• Batch-specific Certificate of Analysis
• Technique Data Sheet with full specifications
• Safety Data Sheet in your preferred language
• Application guidance from our technical team

Timeline: Samples typically ship within 3-5 business days of request approval. Contact info@indexchem.eu or use the form below to start.

IndexChem offers flexible order quantities to serve both development projects and production requirements:

Evaluation samples:

• No minimum order quantity for initial evaluation
• Complimentary samples typically 500g-1kg
• Larger evaluation quantities available on request

Commercial orders:

• Standard products: Minimum 25 kg per grade
• Specialty grades: Minimum 50 kg per grade
• Large-volume pricing available for orders exceeding 500 kg

Packaging options:

• Standard: 25 kg drums
• Bulk: 200 kg drums or IBC containers for high-volume users

For specific product availability and pricing, contact our sales team at info@indexchem.eu with your volume requirements.