Recyclable polyurethane system STD8100

Introduction

STDResin8100 consists of epoxy resin (Component A) and amine-based curing agent (Component B), specifically designed for vacuum-assisted infusion processes. The combination provides an optimal balance between pot life and reactivity. This system is ideal for large mold production requiring extended infusion time, delivering excellent mechanical/thermal properties in cured state and recyclability through degradation.

Applications

• Wind turbine blades
• Nacelle fairings
• Hub covers
• Composite manufacturing

Component Physical Properties (Pre-Cure)

Component	Component A	Component B
Appearance	Colorless/pale yellow liquid	Pale green liquid
Viscosity @25℃/mPa·s	1,200-1,600	5-60
Mixed Viscosity @25℃/mPa·s	200-300	200-300
Density/g/cm³	1.10-1.20	0.95-1.00

Curing Conditions

Parameter	Component A	Component B
Weight Ratio	100	32 (30-34)
Volume Ratio	100	39 (37-41)
Room Temp Cure	≥15℃, ≥5h	≥15℃, ≥5h
Heat Cure	80℃, 5h	80℃, 5h

Cured Properties

Property	Value
Tensile Strength/MPa	65
Tensile Modulus/MPa	3,100
Tensile Elongation at Break	≥5%
Flexural Strength/MPa	110
Flexural Modulus/MPa	3,100
Glass Transition Temp/℃	≥75
Cured Density/g/cm³	1.16
*Tensile Strength Retention (pH=4, 23℃, 1d)	102.2%
Tensile Strength Retention (pH=4, 50℃, 1d)	98.8%
Tensile Strength Retention (pH=4, 50℃, 7d)	86.2%

*Typical cured data, not specifications. Curing regime: 5h@RT + 5h@80℃

*Acid rain resistance test (H₂SO₄/HNO₃ mixture), comparable to blade infusion resins.

Viscosity Curve

Exotherm Curve

DSC Curing Curve

Tg Measurement (DSC)

Packaging

25Kg, 200Kg, 1000Kg

Storage & Shelf Life

1. Store in cool, dry and clean environment
2. Reseal immediately after use
3. 24-month shelf life in original packaging

PPE Requirements

Category	Requirement
Gloves	Chemical-resistant impermeable gloves
Respiratory	Not required
Eye Protection	Splash-proof goggles
Body Protection	Full-body protective clothing. Equip eyewash stations and safety showers

First Aid

Skin Contact

• Flush with soap/water for 5min

Eye Contact

• Rinse with flowing water for 20min
• Seek medical help

Inhalation

• Move to fresh air
• Consult physician if symptoms persist

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