What is the function of polyurethane elastomers
Simple summary: It is the basic raw material for manufacturing polyurethane elastomers (PU rubber), which reacts and solidifies with chain extenders to produce a high elasticity and wear-resistant polymer material with properties between ordinary rubber and engineering plastics.
Simple summary: It is the basic raw material for manufacturing polyurethane elastomers (PU rubber), which reacts and solidifies with chain extenders to produce a high elasticity and wear-resistant polymer material with properties between ordinary rubber and engineering plastics.
1、 Core functions at the material level
1. Forming substrate (basic function)
Polyurethane elastomers is generally an isocyanate terminated prepolymer (material A), mixed with a chain extender (material B), poured, heated and cured, and the liquid raw material becomes a solid elastomer component; Can pour complex shaped parts without the need for rubber vulcanization molds for high-pressure molding.
2. Endow the material with five core characteristics (resin formula determines performance)
High wear resistance: The wear resistance is 3 to 10 times that of natural rubber, and it can withstand continuous friction and erosion without easy wear and tear;
High strength+high elasticity: Stretching and tear resistance far exceed ordinary rubber, while also having good rebound;
Strong bearing capacity: It retains elasticity even under high hardness, with minimal compression deformation, suitable for long-term pressure and repeated impact;
Oil resistant and resistant to various chemicals: good stability in engine oil, hydraulic oil, weak acid and alkali environments;
The hardness range is extremely wide: By adjusting the resin system, the finished product can achieve Shore A20 (soft rubber) to Shore D70 (hard and tough plastic).
Polyester resin: more wear-resistant and oil resistant; Polyether resin: better resistance to hydrolysis and low temperature performance.
2、 Industrial application role
(1) Wear resistant protective components
Produce mining sieve plates, hydraulic cyclone liners, conveyor scrapers, rubber coated rollers, and wear-resistant liners to replace rubber and steel, extend equipment service life, and reduce replacement frequency.
(2) Load bearing walking wheel system
AGV wheels, forklift solid core wheels, caster wheels, drive wheels; Large load-bearing capacity, not easy to slip, not falling off, quiet and wear-resistant.
(3) Shock absorption and buffering components
Buffer pad, coupling elastomer, suspension liner, collision block; Absorb impact, vibration and noise reduction.
(4) Sealing and Fluid Accessories
Oil seal, sealing gasket, pipe cleaner, rubber hose lining; Oil resistant seal, less prone to cracking under dynamic working conditions.
(5) Light industry, textile, printing
Printing rollers, textile rollers, conveyor belts, leather accessories; Friction stability and high surface accuracy.
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