Fast-Curing PVDF Membrane Bonding Epoxy Resin

Product Overview

EX605-35-K is a two-component modified fatty amine epoxy resin designed for fast curing of PVDF membrane modules, improving production efficiency while maintaining excellent bonding performance.

Core Advantages

1. Fast Curing: Fully cures in 17±6 hours at 25°C, reducing production cycle time
   2. Excellent PVDF Adhesion: Bonds effectively with PVDF membrane materials, ensuring module integrity under high-pressure conditions
   3. No Filament Damage: Special formulation prevents burning or damage to PVDF membrane filaments during curing
   4. High Toughness: Absorbs mechanical stress from water flow and system operation, protecting membrane filaments
   5. Good Chemical Resistance: Resists degradation from acids, alkalis, and organic solvents in water treatment environments

Technical Parameters

Target Applications

1. Municipal PVDF Membrane Module Production: Supports mass production of PVDF UF membrane modules for city water supply systems
   2. Industrial Park Centralized Water Supply Systems: Seals PVDF membrane modules for industrial park water treatment, adapting to continuous operation requirements
   3. Seawater Desalination Pretreatment PVDF Membranes: Encapsulates PVDF UF membrane modules in seawater desalination plants, resisting high salinity environments
   4. Emergency Water Supply Equipment: Pottings PVDF membrane modules in vehicle-mounted and mobile water purification systems for rapid deployment

Critical Curing & Handling Precautions

1. Temperature Control: When ambient temperature drops below 15°C, preheat resin and hardener before mixing to ensure proper flowability and curing
2. Humidity Management: Maintain workshop humidity ≤70% during curing to prevent moisture-induced defects
3. Vacuum Degassing: For critical applications, degas mixed adhesive under vacuum to remove any residual air bubbles

Directions for Use

1. Pre-potting Preparation: Calibrate scales, prepare potting tools, cleaning tools, check machine settings, check vacuum pump force, etc.
2. Product Pre-treatment: Place product on a level surface or fixture. Remove dust, clean, degrease, and dry if necessary.
3. Accurate Proportioning: Manual operation requires precise mixing according to the specified ratio and recording. Machine potting requires calibrated ratios and first-article confirmation is recommended.
4. Mixing & Stirring: Manual operation requires thorough stirring or using electric stirrers to ensure homogeneous mixing. Machine potting requires sufficient stirring speed, adjust as needed.
5. Uniform Potting: Manual operation should be done in small, multiple batches to ensure uniformity. Machine potting should follow the programmed path for quantitative dispensing.
6. Inspection or Secondary Potting: After potting, visually inspect as needed. Perform touch-up, bubble removal, or secondary potting if required.
7. Curing: Allow the potted and inspected products to cure at room temperature or with heat assistance (recommended 60°C if needed), according to product and process requirements.
8. Final Product Confirmation: Perform visual inspection and performance testing as required by the customer.

   9. This series of products are room-temperature-curing, addition-cure two-component silicone. During the dispensing process, avoid contact with the following three types of materials to prevent reactions that may affect the curing effect:

   a. Organotin compounds and organotin-containing silicone rubber.

   b. Sulfur, sulfides, and sulfur-containing materials.

   c. Amine compounds and amine-containing materials.

   10. It should be noted that during manual operation, when vacuumizing the mixed A+B adhesive, the vacuum pressure must be controlled to ensure the adhesive is not completely sucked out of the container by the vacuum.

Packing & Shipping & Storage

1. Part A: Typically supplied in 10KG/20KG/25KG saled plastic drums.
2. Part B: Typically supplied in10KG/20KG/25KG sealed plastic drums.
3. Store and transport as a general chemical product.
4. Store sealed, protected from light at room temperature. Shelf life varies from 6 to 12 months depending on packaging; please refer to the expiry date on the shipping package.
5. When temperature drops to 15°C or lower, the hardener or resin should be stored in a warm place or heated before use for potting. Specific heating recommendations depend on the temperature drop; please communicate and consult with us.

FAQ:

A1: Baizhuang's epoxy potting compounds serve diverse industrial needs, including:

• Water Treatment Systems: Sealing and bonding PVDF, UF, and RO membrane modules for municipal water purification, industrial wastewater treatment, and seawater desalination.
• Electronics & LED Manufacturing: Encapsulating precision sensors, LED pixel lights, and flexible strips to provide insulation, moisture protection, and mechanical stability.
• Craft & Signage: Creating crystal-clear photo frames, 3D LED signs, and decorative elements with glossy, durable finishes.
• Specialized Industrial Equipment: Protecting components in aerospace water systems, military-grade purification units, and high-pressure membrane separation systems.

Q2: What distinguishes "modified" epoxy potting compounds from standard epoxies?

A2: Baizhuang's modified formulations incorporate targeted additives to address specific application challenges:

• Flexibility Modifiers: Enhance impact resistance for mobile or seismic-prone equipment (e.g., BZ-609-1 for portable water treatment systems).
• Low-Temperature Curing Agents: Enable fast curing in cold environments without large heating facilities (e.g., EX605-45-2 for winter production).
• Filament-Safe Additives: Prevent damage to delicate PVDF membrane fibers during encapsulation (e.g., EX605 series for water treatment modules).
• UV Stabilizers: Resist yellowing in outdoor LED displays and craft applications (e.g., BZ-710-T for crystal photo encapsulation).

Q3: How do curing times vary across Baizhuang's epoxy product lines?

A3: Curing times are tailored to application needs, with options ranging from rapid to extended cycles:

• Fast-Curing Formulations: Cure in 2–6 hours at room temperature for high-volume production (e.g., BZ-710 series for LED modules).
• Standard Industrial Curing: Require 6–24 hours at room temperature for water treatment membrane modules (e.g., BZ-609, BZ-709 series).
• Extended Pot Life: Offer 4–6 hours of working time for complex assembly operations (e.g., EX605-35 for large-scale PVDF membrane systems).
• Heat-Accelerated Curing: Reduce cure time to 20 minutes–4 hours with temperatures between 60–80°C (e.g., BZ-306 for emergency repairs).

Q4: What chemical and environmental resistances do these compounds offer?

A4: Baizhuang's epoxies are engineered for harsh operating conditions:

• Moisture & Hydrolysis Resistance: Withstand continuous water immersion (IPX7 rating) and resist degradation in aqueous environments (e.g., EX605 series for membrane systems).
• Chemical Resistance: Resist acids, alkalis, organic solvents, and salt corrosion in industrial wastewater and marine applications (e.g., BZ-709 for landfill leachate treatment).
• UV & Weathering Resistance: Maintain color and mechanical properties in outdoor LED displays and craftworks (e.g., BZ-710-D for 3D signage).
• Thermal Stability: Perform reliably across -40°C to 85°C, with specialized formulations for high-temperature industrial processes.

Q5: How do temperature limits vary across different product lines?

A5: Temperature resistance is optimized for specific use cases:

• General Industrial Grade: Operate between -40°C to 85°C for most water treatment, electronics, and craft applications (e.g., BZ-604, BZ-710 series).
• High-Temperature Formulations: Withstand short-term exposure up to 120°C for industrial hot water treatment systems (e.g., EX605-35T for high-pressure RO pretreatment).
• Low-Tolerance Environments: Maintain flexibility and adhesion at -60°C for aerospace and polar exploration equipment (custom formulations available upon request).
• Thermal Shock Resistance: Endure rapid temperature cycles in mobile and military applications (e.g., BZ-609-1 for vehicle-mounted water purifiers).