Polyester Resin
We are a manufacturer based in China. We specialize in providing high-quality Polyester Resin for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Paint chemicals Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
Performance Features
Automotive or industrial coatings:High flexibility, hardness, adhesion, weather resistance, miscibility with acrylic resins, aluminum orientation
Polyester Resins: Technical Overview
| Category | Specifications |
|---|---|
| Definition | Thermosetting polymers formed by polycondensation of diols with unsaturated dibasic acids |
| Chemical Base | Orthophthalic/Isophthalic acid + Propylene Glycol + Maleic Anhydride |
Resin Type Comparison
| Type | Acid Component | Key Properties | Common Applications |
|---|---|---|---|
| Orthophthalic | Phthalic anhydride | Cost-effective Moderate chemical resistance |
Marine hulls FRP tanks |
| Isophthalic | Isophthalic acid | Enhanced corrosion resistance Better mechanical strength |
Chemical storage Pipes |
| DCPD (Dicyclopentadiene) | Modified with DCPD | Low viscosity Fast curing |
Automotive parts Bathtubs |
| Bisphenol-A | Bisphenol derivatives | Superior chemical/heat resistance | Chemical processing equipment |
Technical Properties
| Property | Typical Value | Test Method |
|---|---|---|
| Viscosity (25°C) | 300-800 cPs | ASTM D2393 |
| Gel Time (25°C) | 15-45 minutes | ASTM D2471 |
| Tensile Strength | 40-90 MPa | ASTM D638 |
| Heat Deflection Temp | 60-120°C | ASTM D648 |
| Shrinkage | 5-8% | ASTM D2566 |
Curing Systems
| System | Catalyst | Accelerator | Cure Characteristics |
|---|---|---|---|
| MEKP | Methyl Ethyl Ketone Peroxide | Cobalt Octoate | Room temperature cure |
| Benzoyl Peroxide | BPO | DMA | Heat-activated cure |
| UV-Curable | Photoinitiators | None | Instant cure under UV light |
Formulation Components
| Component | Function | Content Range (%) |
|---|---|---|
| Resin Base | Matrix material | 60-80 |
| Styrene Monomer | Crosslinker | 20-40 |
| Inhibitors | Shelf life extension | 0.01-0.1 |
| Thixotropic Agents | Anti-sag properties | 0.5-2 |
| Pigments | Colorants | 1-5 |
Processing Methods
| Method | Advantages | Limitations |
|---|---|---|
| Hand Lay-up | Low equipment cost Design flexibility |
Labor-intensive |
| Spray-up | Faster production Uniform thickness |
VOC emissions |
| Pultrusion | Continuous profiles High strength |
Limited geometry |
| RTM (Resin Transfer Molding) | Excellent surface finish | High tooling cost |
Market Applications
| Industry | Usage Examples | Resin Preference |
|---|---|---|
| Marine | Boat hulls Deck components |
Isophthalic/DCPD |
| Construction | Roofing panels Architectural elements |
Fire-retardant grades |
| Automotive | Body panels Composite parts |
Low-profile resins |
| Wind Energy | Turbine blades | High-performance isophthalic |
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