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Corrosion Resistant Polyester Unsaturated Resin Marine Grade FRP Composites For Industrial

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Corrosion Resistant Polyester Unsaturated Resin Marine Grade FRP Composites For Industrial

MOQ:	1000KGS
Price:	$1.13-$1.69（KG）
Standard Packaging:	HDPE drum
Delivery Period:	3-7 work days
Payment Method:	T/T
Supply Capacity:	125000KGS/month

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin

CHINA

Brand Name

WGSC

Certification

ISO9001

Solvent Resistance:

Good

Chemical Resistance:

Excellent

Color:

Clear

Uv Resistance:

High

Adhesion Strength:

High

Highlight:

Corrosion Resistant polyester unsaturated resin

Corrosion Resistant upr polymer resin

Industrial polyester unsaturated resin

Product Description

Unsaturated Polyester Resin : Marine Grade FRP Composites For Corrosion Resistant Industrial

Product Introduction

Unsaturated Polyester Resins (UPR) are versatile thermosetting polymers synthesized from unsaturated dibasic acids and diols, dissolved in reactive monomers like styrene. Renowned for their excellent mechanical properties, chemical resistance, and cost-effectiveness, UPRs are widely used in composite manufacturing.

High Strength-to-Weight Ratio: Ideal for lightweight structural applications.
Thermal Stability: Withstands temperatures up to 135°C.
Customizability: Modifiable for flame retardancy, UV resistance, or low shrinkage.
Fast Curing: Ambient or elevated temperature curing for rapid production cycles.

UPRs form the backbone of glass fiber-reinforced plastics (FRP), coatings, and castings, serving industries from marine engineering to aerospace.

Production Process

The manufacturing of UPR involves precise steps to ensure optimal performance:

Polycondensation:
- Dibasic acids (e.g., phthalic anhydride) react with diols (e.g., propylene glycol) at 180-220°C to form a prepolymer.
- Water is removed as a byproduct during this stage.
Monomer Dissolution:
- The prepolymer is dissolved in styrene (30-50% by weight) to reduce viscosity and enable cross-linking.
Additive Incorporation:
- Inhibitors (e.g., hydroquinone) prevent premature curing.
- Promoters (e.g., cobalt naphthenate) accelerate curing when combined with initiators (e.g., MEKP).
Curing:
- Gelation: Initiators generate free radicals, cross-linking the polymer chains (15-45 minutes at 25°C).
- Post-Curing: Heating to 80-120°C enhances cross-link density and mechanical strength.
Quality Control:
- Parameters like viscosity (350-620 mPa*s), gel time (5-15 minutes), and solid content (57-68%) are rigorously tested.

Usage Precautions

Safety:
- Work in ventilated areas to avoid inhaling styrene vapors (flashpoint: 31°C).
- Wear PPE (gloves, goggles, respirators) to prevent skin/eye contact.
Mixing:
- Use calibrated scales for catalyst ratios (1-3% MEKP). Over-catalyzing (>4%) causes brittleness.
Application:
- Maintain mold temperature at 18-25°C; cold molds delay curing.
- Apply 2-3 coats (300-600 μm total thickness) for optimal protection.
Storage:
- Store in HDPE drums at 15-25°C. Shelf life: 3-6 months. Avoid freezing or direct sunlight.

Key Specifications

Parameter	Standard UPR
Appearance	Light yellow viscous liquid
Viscosity (25 °C)	350-620 mPa*s
Density	1.05-1.10 g/cm³
Acid Value	14-25 mg KOH/g
Solid Content	57-68%
Gel Time (25 °C)	5-15 minutes
Tensile Strength	50-140 MPa
Flexural Strength	90-200 MPa
Heat Deflection Temp	47-135°C (1.82 MPa)
Volume Shrinkage	5-8%
Certifications	ISO 9001, REACH, RoHS

Applications

A. Marine Industry

Boat Hulls & Decks: Resists saltwater corrosion and UV degradation.
Offshore Platforms: Structural components exposed to seawater and hydrocarbons.

B. Automotive & Transportation

Body Panels & Spoilers: Lightweight composites for fuel efficiency.
Wind Turbine Blades: High impact resistance for harsh environments.

C. Construction

Sanitary Wares: Sinks, bathtubs, and shower enclosures.
Reinforced Concrete: Improves durability in corrosive climates.

D. Electrical & Electronics

Circuit Boards: Insulating coatings for high-performance electronics.
Transformers: Fire-resistant insulation materials.

E. Energy & Utilities

Desalination Plants: Corrosion-resistant coatings for membranes.
Solar Panels: UV-stable encapsulation for photovoltaic systems.

F. Consumer Goods

Furniture: High-gloss finishes for indoor/outdoor use.
Art & Decor: Artificial marble and onyx products.

Ratings & Review

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

4 stars

3 stars

2 stars

1 stars

All Reviews

High Performance Carbon Fabric Cloth Carbon Fiber Weave For Industrial Composites

Germany Jan 21.2026

Helpful (9)

As a supplier to German automakers, we needed a carbon fiber fabric that meets BMW’s strict tolerance standards for EV battery enclosures. WGSC’s Plain Weave Carbon Cloth (240g/m²) delivered: its uniform fiber distribution ensured zero delamination after 10,000 thermal cycles (-40°C to 120°C), and the 12K filament count provided the stiffness required for crash safety. The fabric’s compatibility with our polyurethane resins cut processing time by 25%, and their EU-based distributor offered same-week delivery to our Stuttgart facility. A must-have for automotive lightweighting!

High Durability Heat Resistant Continuous Roving Fiberglass LFT Direct Roving

Philippines Jan 16.2026

Helpful (1)

At our marine engineering firm in Subic Bay, WGSC’s J860 LFT Roving revolutionized our offshore buoy mooring systems. The 1200tex profile’s exceptional saltwater resistance (no degradation after 18 months in 3.5% salinity) and 550MPa tensile strength exceeded ABS marine standards. The filament winding process ensured zero fiber breakage during injection molding, and the military-grade packaging survived typhoon-season shipping. Engr. Juan dela Cruz, our project lead, praised the 3-day delivery from Manila warehouses—critical for our 24/7 operations

High Performance Fire Resistant Basalt Fiber Roving Continuous Basalt Fiber

Papua New Guinea Nov 2.2025

Helpful (6)

As a civil engineer in PNG’s Highlands, transporting heavy materials is a nightmare. Your 330 tex basalt yarns were a lifesaver for our suspension bridge retrofit. At just 9μm filament diameter, the woven roving weighed 60% less than steel wire mesh while handling 800kg/m² tensile loads. Local installers loved the UV-resistant spool packaging—no degradation after 3-month jungle storage. Critical for us: the ISO9001-certified ISO 2230 moisture barrier ensured 0% corrosion during monsoon season. Total project cost dropped by 55%, and we’re now standardizing on WGSC for all rural infrastructure.

Tags:

Products

MOQ:	1000KGS
Price:	$1.13-$1.69（KG）
Standard Packaging:	HDPE drum
Delivery Period:	3-7 work days
Payment Method:	T/T
Supply Capacity:	125000KGS/month

Detail Information

Product Description

Detail Information

Place of Origin

CHINA

Brand Name

WGSC

Certification

ISO9001

Solvent Resistance:

Good

Chemical Resistance:

Excellent

Color:

Clear

Uv Resistance:

High

Adhesion Strength:

High

Minimum Order Quantity:

1000KGS

Price:

$1.13-$1.69（KG）

Packaging Details:

HDPE drum

Delivery Time:

3-7 work days

Payment Terms:

T/T

Supply Ability:

125000KGS/month

Highlight

Corrosion Resistant polyester unsaturated resin

Corrosion Resistant upr polymer resin

Industrial polyester unsaturated resin

Product Description

Unsaturated Polyester Resin : Marine Grade FRP Composites For Corrosion Resistant Industrial

Product Introduction

High Strength-to-Weight Ratio: Ideal for lightweight structural applications.
Thermal Stability: Withstands temperatures up to 135°C.
Customizability: Modifiable for flame retardancy, UV resistance, or low shrinkage.
Fast Curing: Ambient or elevated temperature curing for rapid production cycles.

UPRs form the backbone of glass fiber-reinforced plastics (FRP), coatings, and castings, serving industries from marine engineering to aerospace.

Production Process

The manufacturing of UPR involves precise steps to ensure optimal performance:

Polycondensation:
- Dibasic acids (e.g., phthalic anhydride) react with diols (e.g., propylene glycol) at 180-220°C to form a prepolymer.
- Water is removed as a byproduct during this stage.
Monomer Dissolution:
- The prepolymer is dissolved in styrene (30-50% by weight) to reduce viscosity and enable cross-linking.
Additive Incorporation:
- Inhibitors (e.g., hydroquinone) prevent premature curing.
- Promoters (e.g., cobalt naphthenate) accelerate curing when combined with initiators (e.g., MEKP).
Curing:
- Gelation: Initiators generate free radicals, cross-linking the polymer chains (15-45 minutes at 25°C).
- Post-Curing: Heating to 80-120°C enhances cross-link density and mechanical strength.
Quality Control:
- Parameters like viscosity (350-620 mPa*s), gel time (5-15 minutes), and solid content (57-68%) are rigorously tested.

Usage Precautions

Safety:
- Work in ventilated areas to avoid inhaling styrene vapors (flashpoint: 31°C).
- Wear PPE (gloves, goggles, respirators) to prevent skin/eye contact.
Mixing:
- Use calibrated scales for catalyst ratios (1-3% MEKP). Over-catalyzing (>4%) causes brittleness.
Application:
- Maintain mold temperature at 18-25°C; cold molds delay curing.
- Apply 2-3 coats (300-600 μm total thickness) for optimal protection.
Storage:
- Store in HDPE drums at 15-25°C. Shelf life: 3-6 months. Avoid freezing or direct sunlight.

Key Specifications

Parameter	Standard UPR
Appearance	Light yellow viscous liquid
Viscosity (25 °C)	350-620 mPa*s
Density	1.05-1.10 g/cm³
Acid Value	14-25 mg KOH/g
Solid Content	57-68%
Gel Time (25 °C)	5-15 minutes
Tensile Strength	50-140 MPa
Flexural Strength	90-200 MPa
Heat Deflection Temp	47-135°C (1.82 MPa)
Volume Shrinkage	5-8%
Certifications	ISO 9001, REACH, RoHS

Applications

A. Marine Industry

Boat Hulls & Decks: Resists saltwater corrosion and UV degradation.
Offshore Platforms: Structural components exposed to seawater and hydrocarbons.

B. Automotive & Transportation

Body Panels & Spoilers: Lightweight composites for fuel efficiency.
Wind Turbine Blades: High impact resistance for harsh environments.

C. Construction

Sanitary Wares: Sinks, bathtubs, and shower enclosures.
Reinforced Concrete: Improves durability in corrosive climates.

D. Electrical & Electronics

Circuit Boards: Insulating coatings for high-performance electronics.
Transformers: Fire-resistant insulation materials.

E. Energy & Utilities

Desalination Plants: Corrosion-resistant coatings for membranes.
Solar Panels: UV-stable encapsulation for photovoltaic systems.

F. Consumer Goods

Furniture: High-gloss finishes for indoor/outdoor use.
Art & Decor: Artificial marble and onyx products.

Tags:

Chopped Strand Mat

Fiberglass Fabric

Carbon Fiber Fabric

Carbon Fiber Felt

Fiberglass Roving

Basalt Fiber

Basalt Fiber Fabric

UHMWPE Rope

Chemical Resin

FRP Sheet

RTM Auxiliary Materials

Corrosion Resistant ​​Polyester Unsaturated Resin Marine Grade FRP Composites For Industrial

Corrosion Resistant ​​polyester unsaturated resin

Corrosion Resistant upr polymer resin

Industrial ​​polyester unsaturated resin

Overall Rating

Rating Snapshot

All Reviews

polyester unsaturated resin,

vinyl epoxy resin,

Chopped Strand Mat

Fiberglass Fabric

Carbon Fiber Fabric

Carbon Fiber Felt

Fiberglass Roving

Basalt Fiber

Basalt Fiber Fabric

UHMWPE Rope

Chemical Resin

FRP Sheet

RTM Auxiliary Materials

Corrosion Resistant ​​polyester unsaturated resin

Corrosion Resistant upr polymer resin

Industrial ​​polyester unsaturated resin

polyester unsaturated resin,

vinyl epoxy resin,

Corrosion Resistant Polyester Unsaturated Resin Marine Grade FRP Composites For Industrial

Corrosion Resistant polyester unsaturated resin

Industrial polyester unsaturated resin

Corrosion Resistant polyester unsaturated resin

Industrial polyester unsaturated resin