| Specification: | Polyurethane is Polemeric materials containing urethane groups ( NH – CO – O )
produced by reaction of polyol with an isocynates.
The most common method for classifying Polyurethane is according to their hardness.
The Advantage of Polyurethane :
A very wide hardness range from shore A up to shore D
A very good abrasion resistance
A significantly better impact resistence
An excellent load – bearing capacity
A wide range of resilience and resist cracking under repeated flexing/ fatique
Remain flexible at very low temperature
Very good insulating properties
Highly resistance to degradation by atmospheric oxygen and ozon.
Also highly resistance by grease and certain chemical resistance..polyurethane products are widely used in engineering, mining, oil, chemical, materials handling, automobile, paper and textile industries among others.
Automotive Industry - Grommets, bearings, bushes flexible couplings.
Building and constructions - Moulds for concrete, gate seals, concrete pumps parts.
Engineering components - Gears, sprockets, wire guides, rail draft gears,
plates, press brake pads, textile yarn guides, gutting boards, business machines belts, coupling.
Mining - Bucket liners, conveyer rollers, scraper blades, flotation cell impellers pump linings, grading screens, lined pipes, cross over pads.
Oil, chemicals and marine - Bushings bearings, hydraocyclones, buoys, pipeline and scrapers, fenders, value seals.
Rollers - Boards rollers, nip rollers metal forming, printing, conveyor can coating, and paper mill.
Seals and gaskets - Pneumatic and oil seals, diaphragms, UV seals, dust seal, double lip oil seal, metal glad wiper seal.
Shoe industry - Shoe soles, bottom-moulding diaphragms, wear plates, energy absorbing insoles.
Wheels and types - Fork lift tyres, heavy duty ecaster wheels, roller skate wheels, roller, blade wheels
Advantages
* Outstanding abrasion resistance
* High tensile strength
* High load bearing capacity
* Good damping properties
* Wide resilience – high elasticity & flex capabilities
* Flexible machining properties
* Wide range of shore hardness
* Strong bonding to plastic and metals
* Lightweight – easy and economic to install
* Resistant to oil, grease, chemicals & lubricants
* Excellent hydrolytic stability
* Sound absorbing
* Low co-efficient of friction
* Ultra tough tear strength
* Good thermal resistance
GBU. |
Itrademarket SMS
