Polyurethane Chemical Classes: Ester v Ether

PolyGlobal Material Comparison

PolyGlobal Ltd, Church Street, Thornes Lane, Wakefield, West Yorkshire, WF1 5QY T: +44(0) 1924 387 310www.polyglobal.co.uk/materials

Polyurethane’s key characteristics include toughness, flexibility and resistance to abrasion. PolyGlobal offers 2 main chemical classes of Polyurethanes, Esters & Ethers.

These different options have specific qualities and characteristics making them more or less suitable to specific aplication requirements or environmental conditions.

� Scraper Blades e.g. Road Roller & Snow Plough� Automotive Suspension Bushes� Aggregate Screening Components

� Scraper Blades e.g. Water Treatment� Subsea Cable Protection� High Speed Roller Coatings

Ester Ether

Application Examples

Please use this information for general comparisons only. Final product testing is always recommended.

Polyester Polyether

HeatResistance

� Higher operating temperature stability � Greater resistance to heat aging

� Less susceptible to heat build up � Lower heat resistance in general

LowTemperatures

� Loss of flexibility at lower temperatures� Will become brittle quicker

� Maintains flexibility at lower temperatures� More resistant to environmental changes

AbrasionResistance

� Excellent surface resistance� Suited to sliding abrasion applications

� Excellent impingement abrasion resistance � Ideally suited for shot blast applications

Resilience& Rebound

� Excellent shock, vibration & energy absorption� Ideally suited for damping applications

� Lower energy absorption � Higher rebound properties

Hydrolysis& Chemical

� Higher chemical & oil resistance� Lower hydrolysis resistance

� Excellent hydrolysis and microbial resistance� Ideal for water based applications

Cut & Tear Resistance

� Higher tensile strength� Higher cut & tear resistance

� Lower tensile strength� Lower cut & tear resistance