Memory foam, also known as polyurethane viscoelastic foam, has become one of the most popular materials in modern comfort applications. From mattresses and pillows to automotive interiors and footwear, memory foam’s unique ability to conform to body contours while providing excellent support and durability makes it an ideal material for both comfort and performance. Among various types of memory foam, high rebound (HR) and slow rebound (SR) foams are the most common, each offering distinct characteristics and applications.
1. High Rebound (HR) Foam
High rebound polyurethane foam is known for its excellent elasticity, breathability, and resilience. It quickly returns to its original shape after compression, providing firm yet comfortable support. HR foam has a more open cell structure, which allows air to circulate freely, preventing heat buildup and ensuring a cooler, more comfortable experience.
Key Features:
- Fast recovery after compression
- Strong resilience and structural stability
- Excellent breathability and durability
- Ideal for automotive seats, high-end furniture, and shoe insoles
The production of HR foam requires precise control of the polyurethane reaction system. The selection of catalysts directly affects the foam’s rebound speed, cell structure, and mechanical strength. Catalysts such as MXC-A33 and MXC-T9 from Mingxu New Materials are designed to balance the gelling and blowing reactions, promoting uniform cell formation and superior mechanical performance in high rebound foams.
2. Slow Rebound (SR) Foam
Slow rebound foam, often referred to as viscoelastic memory foam, is characterized by its delayed recovery after pressure is applied. It provides a cushioning, pressure-relieving effect that contours perfectly to body shape. This type of foam is widely used in bedding, cushions, and ergonomic products, offering a sense of “sinking comfort” and motion isolation.
Key Features:
- Slow recovery speed, contouring to the body
- Excellent pressure distribution and comfort
- Sound and vibration absorption properties
- Commonly used in mattresses, pillows, and protective packaging
Producing high-quality SR foam requires catalysts that can control the reaction rate and maintain foam stability during the curing process. Mingxu New Materials has focused on developing specialized catalyst formulations that deliver stable performance, low odor, and consistent foam quality. Their catalysts provide precise control over the foaming reaction, ensuring smooth rise profiles and consistent slow rebound characteristics.
3. Mingxu New Materials’ Technical Strength
Over the past two years, Mingxu New Materials has continuously invested in the research and development of polyurethane catalyst additives tailored for high rebound and slow rebound sponge foams. The company’s innovative products, such as MXC-A33 (an amine catalyst) and MXC-T9 (a metal co-catalyst), have been widely adopted by manufacturers worldwide for their excellent quality, stable supply, and competitive price.
Advantages of Mingxu’s Catalysts:
- Optimized reaction balance for HR and SR foams
- Low emission, low odor performance
- Consistent foam cell structure and density control
- Cost-effective and reliable alternative to imported brands
Conclusion
As demand for comfort, energy absorption, and ergonomic design continues to grow, the polyurethane memory foam industry is advancing toward greater efficiency and environmental sustainability. Mingxu New Materials remains committed to providing high-performance catalyst solutions for both high rebound and slow rebound foam systems. With proven product quality and technical expertise, Mingxu continues to support global manufacturers in producing superior polyurethane foams that meet evolving market needs.
Post time: Oct-09-2025