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Isophthalic resin is a premium pure isophthalic unsaturated polyester resin engineered expressly for continuous high-speed pultrusion. As a reliable low shrinkage isophthalic resin, it features rapid fiber wet-out, uniform curing, and exceptional processing stability for manufacturing FRP structural profiles, angle bars, and I-beams.
Profiles molded from this matrix deliver superior mechanical toughness, high dimensional accuracy, and outstanding electrical insulation. Thanks to its extreme weatherproof and UV-resistant properties, finished components resist yellowing, deformation, and cracking even under decades of harsh outdoor exposure.
Weatherproof Isophthalic Resin Overview
Weatherproof isophthalic resin by POLYMER is a premium weatherproof isophthalic polyester resin specifically formulated for manufacturing durable PV profiles and outdoor municipal infrastructure. As a pure isophthalic unsaturated polyester resin, it offers exceptionally low curing shrinkage and superior mechanical toughness, making it perfectly suited for high-speed pultrusion applications that demand strict dimensional tolerances.
Tailored Solutions for FRP Manufacturing & Infrastructure
Whether you are molding high-precision components or sourcing materials for large-scale outdoor projects, Weatherproof Isophthalic Resin delivers uncompromising value across the supply chain:
For FRP Composite Manufacturers: Engineered as a low shrinkage isophthalic resin, it ensures rapid fiber wet-out, minimizing scrap rates and maximizing efficiency in continuous pultrusion lines.
For Industrial Parts Suppliers: Provides reliable electrical insulation FRP resin capabilities and outstanding structural integrity for terminal components.
For Infrastructure & Municipal Contractors: Acts as a heavy-duty UV resistant pultrusion resin, ensuring that structural FRP profiles withstand decades of extreme weather without yellowing or micro-cracking.
For Regional Distributors & Agents: As a leading high strength pultrusion resin supplier, POLYMER guarantees batch-to-batch consistency, competitive wholesale pricing, and robust global shipping support.
Weatherproof Isophthalic Resin Core Performance Advantages
Premium backbone structure formulated specifically as an isophthalic resin for composite profiles, outperforming standard orthophthalic resins.
Resists deformation during molding, features tight tolerances, and yields profiles with a straight, smooth finish.
Offers high strength and excellent toughness, along with exceptional resistance to corrosion and aging for outdoor deployment.
Iso Resin Casting Properties (Typical Values)
| Properties | Value | Unit | Test Standard |
|---|---|---|---|
| Tensile Strength | 70 | MPa | GB/T 2567 |
| Tensile Modulus | 3300 | MPa | GB/T 2567 |
| Elongation at Break | 3.0 | % | GB/T 2567 |
| Flexural Strength | 110 | MPa | GB/T 2567 |
| Flexural Modulus | 3800 | MPa | GB/T 2567 |
| Impact Strength | 15 | kJ/m² | GB/T 2567 |
| Heat Deflection Temperature | 80 | °C | GB/T 1634 |
| Barcol Hardness | 46 | — | GB/T 3854 |
Curing conditions: Room temperature curing for 24 hours; post-curing at 40 °C, 60 °C and 80 °C for 2 hours respectively.
Test conditions: 23±2 °C, relative humidity 50±6 %
Liquid Resin Properties (Typical Values)
| Properties | Value | Unit | Test Standard |
|---|---|---|---|
| Shelf Life (uninitiated, dark place) | 3 | months | — |
Weatherproof Isophthalic Resin Specifications
| Properties | Range | Unit | Test Standard |
|---|---|---|---|
| Appearance | Light yellow transparent | — | GB/T 8237 |
| Viscosity at 25 °C | 460–840 | mPa·s | GB/T 7193 |
| Acid Value | 10–18 | mgKOH/g | GB/T 2895 |
| Solid Content | 58–64 | % | GB/T 7193 |
| Gel Time at 80 °C | 3.8–7.2 | minutes | GB/T 7193 |
Note: 1.0g BPO paste added into 100g resin.
| Item No | Chemical Category | Viscosity | Gel Time | Solid Content | Tensile Strength | Flexural Strength | Heat Deflection Temperature | Application | Feature Description |
|---|---|---|---|---|---|---|---|---|---|
| PLM-106 | Terephthalic | 400-700 | 2.5-5 | 65 | 60 | 105 | 80 | Pultruded profiles | High heat resistance |
| PLM-1002 | Orthophthalic | 600-900 | 2.5-4.6 | 61-69 | 60 | 102 | 72 | Pultruded profiles | Universal |
| PLM-3016 | Orthophthalic | 500-800 | 2.5-4.6 | 61-69 | 70 | 115 | 82 | Pultruded profiles | High modulus High strength High toughness |
| PLM-3017 | Orthophthalic | 420-800 | 2.5-4.6 | 61-69 | 70 | 115 | 78 | Tent poles mosquito net poles | High modulus High strength High toughness |
| PLM-202 | Isophthalic | 460-840 | 3.8-7.2 | 58-64 | 70 | 110 | 80 | Pultruded profiles | High Gloss High Strength |
| PLM-411 | Bisphenol A | 300-500 | 8-14 | 53-59 | 75 | 125 | 105 | Pultruded profiles | High heat resistance High strength High toughness |
Weatherproof Isophthalic Resin Application
Electrical Insulation
Highly reliable electrical insulation FRP resin preventing arc tracking and ensuring safety in power transmission systems.
Municipal Guardrails
The optimal municipal guardrail fiberglass resin preventing outdoor yellowing and maintaining color vibrance for city infrastructure.
PV Mounting Structures
A specialized FRP PV structure pultrusion resin ensuring maximum structural support and anti-aging properties for solar farms.
Architectural Profiles
Outstanding outdoor fiberglass profile resin protecting building facades and window frames from extreme environmental degradation.
FAQ
Submit your application and molding process. Our polymer engineers will provide a material selection guide and dispatch free test samples rapidly.
Whatsapp: +86-18068598369
+86-13401564599
E-mail: sales@czpolema.com
renato@czpolema.com
ADD: No. 366 Heping Middle Road, Tianning District, Changzhou City, Jiangsu Province, China