Environment-friendly medium density fiberboard with light calcined powder as filler

Abstract

The invention discloses an environment-friendly medium density fiberboard with light calcined powder as filler. The environment-friendly medium density fiberboard comprises, by mass, 70 parts to 80 parts of wood fibers, 10 parts to 12 parts of the light calcined powder, 7 parts to 9 parts of urea resin, 0.8 part to 1.2 parts of paraffin, 0.2 part to 0.3 part of caustic soda flakes, 0.2 part to 0.3 part of formic acid, 0.25 part to 0.3 part of ammonia chloride, 0.15 part to 0.2 part of melamin and 0.05 part to 0.08 part of an assistant; and the light calcined powder is a material obtained by calcining natural magnesite stone at the temperature ranging from 750 DEG C to 1100 DEG C. The environment-friendly medium density fiberboard has the beneficial effects that the use amount of wood is saved, meanwhile, the formaldehyde releasing amount of a high-density fiberboard can be greatly reduced, the environment-friendly performance of the fiberboard can be improved, the production level and the product quality are improved, and meanwhile the technical innovation, the technology innovation and the product innovation of manmade board products are promoted.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a method for preparing medium density boards. Background technique [0002] Forest resource is a rare green environmental protection resource and a renewable resource that is closely related to people's life. The periodicity of its regeneration determines its value is irreplaceable. my country is a developing country with a large population and severe shortage of forest resources. The forest coverage rate is 18.21%, and the per capita forest resource ownership rate is less than one-tenth of the world average. With the rapid development of the national economy and the rapid improvement of people's quality of life, the demand for timber has become one of the most scarce resources in our country. [0003] As a new type of wood-based panel with excellent performance, wide application and high comprehensive utilization rate, medium / high-density fiberboard has good market expectation...

AI Technical Summary

Problems solved by technology

[0008] Second, the management level is poor and the product qualification rate is low

[0009] Third, the product application field is narrow and the application technology is backward

There are still many problems like this, but they are not insurmountable and overcome. The biggest problem is the severe shortage of raw materials. This is why my country's wood-based panel industry is at a crossroads and faces difficult choices.

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