Natural wood / synthetic high polymer modification

Abstract

The present invention relates to modification of timber with polymer. Timber, including log, wood board and square timber after being microwave drying for breaking cell wall is soaked in synthetic polymer before drying and curing. The soaking liquid has foaming agent added to facilitate subsequent drying and curing, and formaldehyde in the amount over 10 % may be added into the soaking liquid to shear the macro molecules formed inside the soaking liquid and prolong the service life of the soaking liquid. The present invention can greatly raise the physical and mechanical performance of timber and alter the color while producing no change in the fiber structure of timber and the sizes.

Description

Technical field [0001] The present invention relates to a kind of modified wood, especially using synthetic high polymer or synthetic high polymer prepolymerized liquid as impregnating liquid to natural state wood, namely logs, boards, squares, not fiber state, shaving state, wood powder state, Modification of veneer wood. Background technique [0002] At present, the known modified wood is "improved wood through various physical and chemical methods [impregnated with resin glue or monomer and treated with high temperature (high temperature compression) or radiation]", including impregnated material, namely "impreg, impregnated wood impregnated with synthetic resin Glue, a kind of modified wood treated with high temperature or radiation" "Chinese Forestry Dictionary" (Nanjing Forestry University edited the first edition in November 1994) [0003] Patent application number 86104938 "Manufacturing process of plasticized fiber molded products", the inventor shredded the origin...

AI Technical Summary

Problems solved by technology

[0008] ② Resin glue, that is, the cross-linked synthetic resin has extremely high viscosity, and even under extremely high pressure (wood is crushed), it is difficult to perform impregnation as an impregnation solution;

[0009] ③Before the synthetic resin is cross-linked, that is, the synthetic high polymer prepolymer liquid or monomer can complete the impregnation operation well, but as the impregnating liquid, its service life is only a few hours, and it is difficult to carry out industrial production;

[0010] 4. known technology all does not pay attention to as the pretreatment of impregnating wood, so that impregnating operation is carried out smoothly;

[0011] 5. The known technologies have not paid attention to how the impregnated wood is conveniently dried and cured, and the elimination of free formaldehyde

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