How to Produce High Resilience and Slow Rebound Foam?

High resilience and slow rebound can be regarded as performance modifications of elasticity. Elasticity is defined as the ability of a material to quickly return to its original shape after the deforming force is removed. The test machine used for elasticity is the ball rebound tester, as shown below:

1. Special High Resilience Slabstock Flexible Foam

Ideal Structure Diagram of General Flexible Foam

Actual Structure Diagram of General Flexible Foam

Molecular Structure Diagram of Diethanolamine High Resilience Foam

Relationship Between Rebound Rate and Diethanolamine Dosage

2. Slow Rebound

Slow rebound foam has historically had many names, such as viscoelastic foam, low rebound foam, memory foam, shape memory foam, temperature-sensitive foam, pressure-relieving foam, slow recovery foam, or slow-release foam. In 2003, the U.S. Polyurethane Foam Association recommended using the term “Viscoelastic PU Foam” uniformly for such materials.

Formulation Characteristics:

*OH (polyol) ≥ OH (water)

*Same soft and hard segments, temperature sensitive, reversible aggregation and disaggregation

*Viscosity in meridians

Effect of Water Blowing Agent on Slow Rebound Foam Production

TDI Index and Rebound Time of Slow Rebound Foam

Relationship Between TDI Index and Slow Rebound Foam Recovery Time

Performance Indicators