Composite fiber board

Abstract

The invention relates to a composite fiber board which is prepared from the following components in parts by weight: 120-130 parts of wood fibers, 7-15 parts of viscose, 20-30 parts of hydroxypropyl starch, 10-11 parts of nano nickel, 100-120 parts of absolute ethyl alcohol, 33-35 parts of carbon fibers, 2-5 parts of acetone, 20-30 parts of a water borne polyurethane adhesive, 10-15 parts of ammonium chloride, 20-60 parts of a styrene-acrylic emulsion, 1-3 parts of basalt powder, 3-5 parts of chitin whiskers and 0.3-0.5 part of zinc borate. Compared with the prior art, the prepared fiber boardis free of free formaldehyde and has the characteristics of no formaldehyde release amount, low thickness swelling rate of water absorption, good mechanical property and the like. The product has thecharacteristics of being excellent in mechanical property and the like, and can be widely applied to indoor decoration, furniture processing and the like.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a composite fiberboard. Background technique [0002] Fiberboard is a wood-based panel made by interweaving lignocellulosic fibers and utilizing their inherent adhesive properties. Adhesives and additives can be applied during the manufacturing process and are widely used in furniture, interior decoration, packaging and other industries. With the improvement of people's living standards, the performance requirements of the board are getting higher and higher. Especially the amount of formaldehyde released from the board directly affects the physical and mental health of human beings. According to the analysis of the results of national supervision and spot checks in the past 10 years, most of the unqualified aspects are mainly excessive formaldehyde emission, high water absorption thickness expansion rate, and insufficient static bending strength, while other unqualified prop...

AI Technical Summary

Problems solved by technology

However, these adhesives have a fatal weakness that formaldehyde is released during the production and use of the board. This defect has led to the banning of formaldehyde-based adhesives in various fields.