Acudel® modified PPSU

Polyphenylsulfones formulated for cost effectiveness

Acudel® modified PPSU (polyphenylsulfone) is a family of proprietary formulations that fill the cost-performance gap between PPSU and polysulfone (PSU).

Acudel® grades provide toughness and chemical resistance along with excellent hydrolytic stability and dimensional stability, making them well-suited for plumbing system components with less demanding pressure and temperature requirements.

Acudel® 79000 is formulated specifically for use in aircraft cabin interior components and complies with stringent FAA regulations requiring low heat release, low smoke generation and low toxic emissions.

Key Features

  • HDT of 197 °C (387 °F)
  • Better impact strength than PSU
  • Excellent hydrolytic stability
  • Good chemical resistance
  • Opaque


Typical Applications

  • Aircraft interiors
  • Pipe fittings
  • Plumbing manifolds
  • Hot beverage equipment
  • Food service trays

Data Sheets

Acudel® modified PPSU
Acudel® 22000Unreinforced, general purpose for injection molding
Acudel® 79000Flame retardant for aircraft interiors, low flow for extrusion

Sulfone Polymers Overview

Sulfone polymers are high-heat plastics with a clear advantage. These amorphous thermoplastics offer more toughness, strength and hydrolytic stability than other transparent plastics.

Product Family

Sulfone polymers are high-heat plastics with a clear advantage. These amorphous thermoplastics offer more toughness, strength and hydrolytic stability than other transparent plastics. They withstand prolonged exposure to water, chemicals and temperatures – handling a broad range of end-use temperatures from -40°C to 204°C (-40°F to 400°F).

Udel® PSU – Rigid, high-strength, semi-tough, transparent plastic that offers higher heat resistance and better hydrolytic stability than polycarbonate (PC). It retains its good mechanical properties when exposed to steam and other sterilization techniques.

HDT of 174°C (345°F), Good practical toughness, Good chemical resistance.

Radel® PPSU – Delivers the highest performance of our sulfone polymers, offering better impact resistance and chemical resistance than polysulfone (PSU) and polyetherimide (PEI).

HDT of 207°C (405°F), Superior toughness and impact strength, Best chemical resistance, R-7000 Series for aircraft interiors.

Acudel® modified PPSU – A family of proprietary formulations that fill the cost-performance gap between PPSU and polysulfone (PSU).

HDT of 197°C (387°F), Better impact strength than PSU, Excellent long-term hydrolytic stability.

Veradel® PESU – Combines good chemical resistance with a high heat deflection temperature of 204°C (399°F), making it a good fit for baby bottles and other food service applications. This resin is also inherently flame retardant for use in electronic components and testing devices

HDT of 204°C (399°F), Better chemical resistance than PSU, Inherently flame retardant.

Virantage® Tougheners – Comprehensive range of specialty polymers, oligomers and monomers in a variety of molecular weights and particle sizes. Product forms include powders, fibers and foams. High-temperature tougheners, Improves damage tolerance, Reactive end groups available.


Good-Better-Best Performance Capabilities
 Udel® PSUVeradel® PESUAcudel® mod. PPSURadel® PPSUVirantage® PESU
PerformanceGoodBetterBetterBestSpecialty
Aircraft Interiors   
Coatings   
Composites    
Electrical & Electronics   
Fittings & Manifolds  
Faucet Components  
Food Service  
Fuel Systems    
Membranes  
Medical & Dental Devices   
Orthopedics    
Sterilization Cases & Trays    

High Heat Resistance

Sulfone polymers are noted for high heat deflection temperatures (HDT) and outstanding dimensional stability. These strong, rigid polymers are the only thermoplastics that remain transparent at service temperatures as high as 204°C (400°F). Even after long-term exposure, the resins do not discolor or degrade.

Sulfones_ThermalComparison

Hydrolytic Stability

The hydrolytic stability of sulfone polymers makes them highly resistant to water absorption. This combines with heat resistance to deliver reliable long-term performance in hot water and steam, even under autoclave pressures. Unlike other transparent polymers, sulfone polymers are not prone to clouding or crazing.

Retention of Tensile Strength in 96°C Water

Sulfones_TensileStrength96C

Retention of Tensile Strength in 132°C Water for 30 Minutes

Sulones_TensileStrength132C

Toughness and Impact Strength

Sulfone polymers are extremely tough and do not break in standard unnotched impact tests. They retain their toughness and strength over time, unlike polyetherimide (PEI) which exhibits a significant loss of impact strength and becomes brittle.

Retention of Tensile Strength

Sulfones_TensileStrengthChart

Retention of Impact Strength

Sulfones_ImpactStrengthChart

The impact strength of test plaques heat aged at 190°C (375°F) for 170 hours was evaluated using a Gardner falling dart impact tester. Radel® PPSU absorbs significantly higher impact force than polyetherimide (PEI) without cracking or breaking.

Falling Dart Impact Test

Sulfones_GardnerFallingDart

Chemical Resistance

Sulfone polymers have good chemical resistance to many materials, including the following:

  • Aqueous systems
  • Caustics
  • Inorganic acids
  • Aliphatic hydrocarbons
  • Detergents and soaps
  • Certain alcohols

General Indication of Chemical Resistance
 Udel®
PSU
Radel®
PPSU
PC
General Chemicals
AlcoholsGoodExcellentGood
Acids, ConcentratedGoodExcellentFair
Acids, DilutedExcellentExcellentGood
Bases, ConcentratedExcellentExcellentPoor
Baes, DilutedExcellentExcellentPoor
EstersPoorFairPoor
Hydrocarbons, AliphaticExcellentExcellentPoor
Hydrocarbons, AromaticPoorFairPoor
Hydrocarbons, ChlorinatedPoorFairPoor
KetonesPoorPoorPoor
Hospital Disinfectants
Bleach Solutions, 10%ExcellentExcellentGood
Cavicide®ExcellentExcellentGood
Envirocide®ExcellentExcellentGood
Cidex®ExcellentExcellentExcellent
Hydrogen Peroxide, 3%ExcellentExcellentGood
Isopropyl Alcohol, 70%GoodExcellentGood
Manu-Klenz®ExcellentExcellentExcellent
Phenols, 2%PoorExcellentGood
QuaternariesGoodExcellentExcellent
Sani-Cloth® HBExcellentExcellentPoor
Sani-Cloth® PlusPoorExcellentPoor
Sporotal® 100GoodExcellentExcellent
Wex-Cide®PoorExcellentGood

Sterilization

Udel® PSU and Radel® PPSU are compatible with a full range of commercial sterilization technologies. Because of its high heat resistance and excellent hydrolytic stability, Radel PPSU can be steam sterilized over 1,000 cycles without any significant loss of properties.

COMPATIBILITY WITH sterilization methods
 Udel®
PSU
Radel®
PPSU
PC
Steam
18 Minutes at 134°C
10 cycles

500 cycles

 
1,000 cycles 

 
Ethylene Oxide Gas100 cycles

Vaporized Hydrogen
Peroxide
25 cycles

High-Energy Gamma Radiation40 kGy

Transparency and Color

The Solvay family of Sulfone polymers offer transparent, opaque and glass-fiber reinforced grades in natural and colored resins.

Sulfone polymers are the only thermoplastics that remain transparent at temperatures as high as 204°C (400°F). Even after long-term exposure to elevated temperatures, the materials do not discolor or degrade.

The resin’s natural color is transparent light amber. Low-color grades of Udel PSU with a near water-white appearance are available. Solvay uses its proprietary low-color technology to create vibrant transparent colors that give OEMs a clear advantage over metal without compromising performance.

Flame Retardancy

Veradel® PESU and Radel® PPSU are inherently flame retardant. Radel R-7000 Series products are specially formulated for us in aircraft interiors and are in compliance with stringent FAA regulations requiring low heat release, low smoke generation and low toxic gas emissions.

Sulfones_LimitingOxygen