1, the two definitions are different.
Sponge: A porous material with good water absorption, which can be used for cleaning articles.
Wood pulp cotton (wood fiber): an organic flocculent fiber material made of natural renewable wood by chemical treatment and mechanical processing.
2. The raw materials are different.
Sponge: Natural sponges made of lignocellulosic fibers or foamed plastic polymers, as well as sponges.
Wood pulp cotton (wood fiber): made of natural renewable wood by chemical treatment.
3. They have different uses.
Sponge: It has good water absorption and can be used for cleaning articles. Natural sponges can also be used for body cleaning or painting.
Wood pulp cotton (wood fiber): used in concrete mortar, gypsum products, asphalt roads and other fields. It can be used for manufacturing medium density fiberboard and home building materials industry.
Their characteristics are different.
Sponge: polyurethane soft foam rubber, polyurethane is the most common polymer material in life, which has the characteristics of shock absorption and friction resistance.
Wood pulp cotton (wood fiber): non-toxic, tasteless, pollution-free, non-radioactive, insoluble in water, warm and structurally sticky.
5. Their specific applications are different.
Sponge: can be used as sole, tractor tank track substrate; Can be used as a swivel chair sofa cushion and back cotton; Can be used as a flame retardant fire extinguisher.
Wood pulp cotton (wood fiber):
Widely used in concrete mortar, gypsum products, asphalt roads and other fields, it has a good effect on preventing coating cracking, improving water retention, improving production stability and construction adaptability, increasing strength and enhancing adhesion to the surface. Its technical functions are thixotropy, protection, absorption, carrier and filling.
Due to the capillary action of fiber structure, the water in the system quickly transfers to the surface and interface of the slurry, which makes the water distribution in the slurry uniform and obviously reduces the skinning phenomenon. The bonding strength and surface strength are obviously improved, and this mechanism also plays an important role in crack resistance because of the decrease of tension during drying.
The dimensional stability and thermal stability of wood fiber play a very good role in heat preservation and crack resistance.
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