First of all, let's first understand what is a sponge? What is a slow rebound sponge?

Sponge, a porous material, has good water absorption and can be used for cleaning items. Commonly used sponges are made of wood cellulose fibers or foamed plastic polymers.

The main process of the sponge is: mixing the foaming resin, the foaming aid and the binder resin (making the finished product with adhesiveness); and then foaming.

Mix 80 parts of ethylene vinyl acetate (EVA), 20 parts of APAOPT3385, 20 parts of azodicarbonamide, L9 parts of CACO and 0.6 parts of dicumyl peroxide, place them in a mold to foam, and break them with mechanical force Closing the cells, the foamed sponge can be obtained. Its density (D) is 0.028G/CM, and the 25% compressive hardness is 1.9KPA.

The sponge in turn can be a high-resilience sponge and a slow-resilience sponge.

Slow-rebound sponge is also called inert sponge, memory foam, low-rebound sponge, slow-elastic cotton. According to different processes, it can be divided into polyether foaming series and MDI molding series.

Slow rebound sponge is a special material, slow rebound sponge is a material that can also deform according to changes in body temperature. When the slow-rebound sea is pressurized, it will not produce a rebound force until all the pressure is spread out evenly. When the external force stops, it will slowly restore its original shape.

Slow-rebound sponges are extremely sensitive to temperature and weight, becoming softer in warmer environments and harder in cooler environments. Therefore, this material can be applied to the concave and convex shape of the human body, contacting and supporting the back of the human body. In contrast, traditional ordinary sponges do not have such sensitivity to temperature, nor can they fully support body shape curves.

Slow rebound sponge is a combination of softness and toughness. In the standard test species, after 80,000 times of compression, the slow-rebound sponge has a 5% less deformation and depression than the ordinary polyurethane sea surface. The degree of deformation and depression of ordinary high elastic sea surface reaches 10-15%.

Due to the characteristics of the slow-rebound sponge, the possibility of tossing and turning on the bed is greatly reduced, thereby improving people's sleep quality. Medical research shows that sleeping on a slow-rebound foam mattress reduces the average number of turns on the bed from 80-100 to 17-20 during sleep. The reduction of stress is the main reason for feeling comfortable.

Slow-rebound sponge is a high-tech material designed and developed for the America Aeronautics and Space Administration for the space program. It was designed for astronauts to help relieve the stress experienced by astronauts during takeoff, landing and flight. Slow-rebound pillows and mattresses allow the body to rest in a natural, stress-free position thanks to the pressure-relief feature of the slow-rebound foam.