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Fast Curing BPF Type Low Viscosity Phenolic Novolac Epoxy Resin for Pultrusion & Wind Turbine Blade Repair NPPN-638S
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Liquid Epoxy Resin

Epoxy Curing Agent

Solid Epoxy Resin

Fumed Silica

Defoamer Additive

Dispersant Additive

Wetting Agent

Silicone Leveling Agent

Special Additives
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Fast Curing BPF Type Low Viscosity Phenolic Novolac Epoxy Resin for Pultrusion & Wind Turbine Blade Repair NPPN-638S
  • name

Fast Curing BPF Type Low Viscosity Phenolic Novolac Epoxy Resin for Pultrusion & Wind Turbine Blade Repair NPPN-638S

Brand Name: DAHUA
Model Number: NPPN-638S
MOQ: 4400 kilometers
Price: $3.18/kilometers 4400-17599 kilometers
Packaging Details: 220kg/drum,17600kg/80drums/20pallets/20FCL
Payment Terms: T/T
Detail Information
Product Description
Detail Information
Place of Origin:
Guangdong, China
Certification:
ISO 9001, ROHS, REACH
CAS No.:
28064-14-4
Type:
Liquid Epoxy Resin
Main Raw Material:
Phenolic Novolac Epoxy Resin
Physical State:
Liquid
Epoxy Equivalent Weight G/eq:
165~180
Viscosity Cps/25C:
15000~25000
Gardner:
Max 3.5
Gel Time At 25C Min:
<15
Usage:
High-speed Filament Winding, Pultrusion, Fast-set Adhesives
Highlight:

fast curing epoxy resin

,

rapid cure novolac resin

,

NPPN-638S epoxy resin

Product Description
Product Description
Fast Curing Phenolic Novolac Epoxy Resin NPPN-638S

1, General Description
NPPN-638S is a breakthrough fast-curing phenolic novolac epoxy resin engineered for high-productivity manufacturing processes where cycle time reduction directly impacts profitability. Through optimized molecular weight distribution and strategic incorporation of catalytic moieties in the polymer backbone, NPPN-638S achieves gel times under 15 minutes at 25C when combined with fast amine hardeners, representing a 60% reduction compared to conventional novolac epoxy resins. Unlike traditional approaches to accelerating epoxy cure that sacrifice pot life or final properties, NPPN-638S maintains a usable pot life of 20-25 minutes at 25C and delivers full thermal and mechanical property development within 4 hours at ambient temperature or 15 minutes at 80C.

2, Chemical Composition:
Phenolic novolac epoxy resin
 
3, Sale Specification & Typical Properties:
Quality Unit Range
Viscositycps/25℃15000~25000
Physical State-Liquid
Epoxy Equivalent Weightg/eq165-180
ColorGardnerMax 3.5


4, Application:
NPPN-638S is optimized for high-speed manufacturing:
1. High-speed filament winding of CNG and hydrogen storage vessels.
2. Pultrusion of structural profiles and rebar for construction.
3. Automated fiber placement (AFP) for aerospace structures.
4. Rapid-set structural adhesives for automotive assembly lines.
5. Fast-cure repair compounds for pipeline and infrastructure maintenance.
6. On-site fabrication where oven curing is impractical (wind turbine blade repair, marine hull repair).


7. Wind turbine blade on-site repair systems with rapid strength development.
8. BPF type (Bisphenol-F) grade available for ultra-low viscosity requirements.
9. Epoxy equivalent weight 160-180 g/eq optimized for rapid pultrusion line speeds. 5, Storage properties:
At least 12 months in sealed containers at ambient temperature.

6, Handing precautions:
Product may cause skin and eye irritation. In cases of skin contact wash immediately with soap and water. For eyes, flush with plenty of water for 15 minutes and seek medical attention immediately.
 
7, Packaging
220kg/drum,17600kg/ 80 drums/ 20pallet, 17,600kg/20Fcl

9, FAQ

Q: What is the maximum recommended mix mass at 25C for NPPN-638S?
A: We recommend keeping mixed batches under 500g for ambient cure to manage exotherm safely. For larger masses, use cooling or staged addition.

Q: Can NPPN-638S be used with standard hardeners?
A: Yes, but to achieve the full fast-cure benefit, we recommend DAHUA fast cycloaliphatic amine or modified Mannich base hardeners specifically formulated for NPPN-638S.

Q: Does faster cure affect final Tg?
A: No significant impact. With proper stoichiometry and post-cure, NPPN-638S achieves the same 150-160C Tg as standard novolac systems.

Payment & Shipping Terms
Minimum Order Quantity
4400 kilometers
Price
$3.18/kilometers 4400-17599 kilometers
Tags: 

Epoxy Resin  

Industrial Epoxy Resin  

Epoxy Resin Coatings

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