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

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
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:

  1. 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.
  2. Monomer Dissolution:
    • The prepolymer is dissolved in styrene (30-50% by weight) to reduce viscosity and enable cross-linking.
  3. Additive Incorporation:
    • Inhibitors (e.g., hydroquinone) prevent premature curing.
    • Promoters (e.g., cobalt naphthenate) accelerate curing when combined with initiators (e.g., MEKP).
  4. 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.
  5. 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.
Corrosion Resistant ​​Polyester Unsaturated Resin Marine Grade FRP Composites For Industrial 0
products
PRODUCTS DETAILS
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
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

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:

  1. 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.
  2. Monomer Dissolution:
    • The prepolymer is dissolved in styrene (30-50% by weight) to reduce viscosity and enable cross-linking.
  3. Additive Incorporation:
    • Inhibitors (e.g., hydroquinone) prevent premature curing.
    • Promoters (e.g., cobalt naphthenate) accelerate curing when combined with initiators (e.g., MEKP).
  4. 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.
  5. 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.
Corrosion Resistant ​​Polyester Unsaturated Resin Marine Grade FRP Composites For Industrial 0