Wood microwave-impregnation modification process for solid wood floor heating

Abstract

Disclosed is a microwave-impregnating modified treatment process for wood for ground heating solid-wood flooring. The process comprises a. microwave treatment: putting wood in a microwave treatment device to undergo microwave treatment, wherein a microwave treatment process is carried out three times, and a treatment time interval is 1-3 min; regulating the radiation power to 2-5 KW the first time, the radiation time being 30-60 s; regulating the radiation power to 1-4 KW the second time, the radiation time being 20-40 s; and regulating the radiation power to 0.2-0.8 KW the third time, the radiation time being 8-15 s; b. cooling: carrying out cooling to reduce the temperature, and removing the wood from a tank when the temperature is reduced to 25-40°C; c. primary impregnation: impregnating the wood in an analytically pure water solution in a mass fraction of 20-30 % at an impregnation temperature of 50-70°C, taking out the wood and drying same after impregnating the wood for 25-35 h, wherein drying the wood is carried out until the water content reaches 8 %; d. secondary impregnation: putting the dried wood in a vacuum impregnating tank, regulating a vacuum degree to -0.20-(-0.10) MPa, maintaining the vacuum degree for 10-20 min, using a negative pressure to inject resin into a tank body at the same time, so that the wood is impregnated in the resin, and controlling the pressure to be 1-3 MPa and maintaining the pressure for 1-4 h; and e. obtaining the finished product: drying the wood and obtaining a final material.

Description

technical field [0001] The invention relates to a wood modification treatment for solid wood floors for floor heating, in particular to a wood microwave-impregnation modification treatment process for solid wood floor heating, and relates to the field of wood floor and furniture manufacturing. Background technique [0002] In recent years, with the improvement of people's consumption level, people pay more and more attention to high-quality home life experience, especially people's requirements for environmental protection and living environment comfort, the solid wood floor heating industry is also showing a warming trend. Timber is also in increasing demand. Due to the problems of conventional wood drying and modification for a long time, high energy consumption and serious pollution, in addition, some common solid wood materials cannot be used in floor heating environments due to their natural properties of shrinking when dry and expanding when wet, and their dimensions a...

AI Technical Summary

Problems solved by technology

Due to the problems of conventional wood drying and modification for a long time, high energy consumption and serious pollution, in addition, some common solid wood materials cannot be used in floor heating environments due to their natural properties of shrinking when dry and expanding when wet, and their dimensions are stable. Therefore, people began to seek and study new wood modification technologies

Microwave vacuum drying technology originated in the 1930s and became a hot spot in the world due to the discovery of its thermal effect. Then in the 1960s and 1970s, many countries began to apply this technology to wood drying. Problems in equipment, drying process, drying quality and many other aspects have not been resolved. Up to now, the industrial application of wood microwave drying has not made substantial progress. The proportion of microwave drying wood in wood drying is almost negligible.