Lignocellulose





Wood fiber is an organic fiber obtained from natural wood after grinding and chemical treatment, which is widely used in cement, gypsum, lime, wall insulation and other chemical building materials. It is extracted from wood pulp, and completely separates lignin and semi lignin from wood pulp through shredding, neutralization, bleaching, rolling, and then into different grades (such as fiber length) to meet the needs of different application materials.

Physical and chemical properties

1. Wooden fiber is a pure white natural short rod shaped superfine powder, non-toxic and tasteless, which can burn and easily absorb moisture in the air.

2. Small specific gravity, large specific surface area, excellent heat preservation, heat insulation, sound insulation, air permeability, even thermal expansion without cracking; It has higher wet film strength and coverage effect.

3. Wood fiber has strong antifreeze and heat resistance, and can insulate for several days when the temperature reaches 150 ℃; Heat insulation for tens of hours when the temperature is up to 200 ℃; It can also be insulated for several hours when the temperature exceeds 220 ℃.

4. It is inert and will not react with any other materials in the powder material. It only plays a physical role.

5. Insoluble in water, weak acid and alkaline solution; PH value is neutral, which can improve the corrosion resistance of the system.

The characteristics and application of powder building materials

1. Cracking resistance - due to the good dimensional stability of wood fibers, machinery produced during drying or solidification

2. It can be weakened by fiber reinforcement, greatly reduce the shrinkage after drying, improve the crack resistance, and effectively prevent cracking.

3. Moisturizing property - wood fiber has strong cross-linking function, and can absorb and transport liquid through its capillary action

4. When it is mixed with other materials, the fiber is overlapped into a three-dimensional structure, which can lock the water in it for water retention and retarding,

5. Reduce the cracks caused by drying, and strengthen the moisture retention of the system.

6. Good structural viscosity - due to the capillarity of wood fibers, the internal moisture can be quickly transferred to the pulp surface,

Make the water in the slurry system evenly distributed, significantly reduce the shrinkage and expansion of the system, and make the precision of construction or prefabricated parts

The bonding strength is greatly improved and the skinning phenomenon is reduced. And once the three-dimensional network structure of wood fiber is at rest

For example, after the cement mortar is solidified, the wood fiber can tightly adhere to the cement mortar to prevent moisture and rain from penetrating.

7. Good operability - the three-dimensional network structure can effectively absorb and weaken the mechanical energy generated during the curing process,

The construction operation and drying process will not fall. And when the external force acts on it (such as mixing and pumping),

Some liquid will be thrown into the matrix from the fiber structure, resulting in lower viscosity and improved workability. Its good thixotropic characteristics,

It can effectively prevent dripping, and make painting, scraping and other construction operations convenient. These characteristics are possessed by super strong wood fibers

It can greatly improve the operability of construction materials.

8. Good dispersibility - wood fiber is easy to mix with other materials, and it is evenly dispersed, with good leveling, no sagging, and resistant to

9. Splash and softer color can prevent reflection. Wood fiber is suitable for improving and optimizing the performance of building materials,

8. It also endows building materials with new characteristics and functions, improves the stability of production and the workability of construction, and its technical role is mainly

10. Yes: thixotropy, protection, absorption, commonly used as carrier and filler. Widely used in emulsion paint, paint, dry powder paint

11. Concave convex grain, thermal insulation mortar, interior and exterior wall putty, tile adhesive, jointing agent, caulking gypsum, cement prefabrication

11. Plate and wall lining, etc.



Specification, model and technical index of wood fiber