Manufacturing method of plasticizing wood

Abstract

A plasticizing wood makes full uses of a number of wood fiber resources in nature which are not widely used, such as fast-growing woods, shrubs, branches, bamboos as well as a larger number of lignin resources produced in pulp and paper making processes. Wood fibers and phenolic resins participate in the plasticization reaction together; phenolic hydroxyl and formyl groups are owned by the wood fibers and the phenolic resins; under conditions, body-type high polymers are eventually formed through condensation polymerization and are firmly connected with fibers; water serves as a plasticizer in thermal plastics process of lignin; owing to the action of pressure in a mould, flowing deformation of lignin is controlled and used; and finally, the plasticizing of plasticizing wood is finished in the condition that the glass state temperature of lignin is restored. Wood plastic materials of plasticizing wood can be applied in terms of heavy structural woods, replace the application of steelsand cements in building structures, reduces high energy consumption production of the steels and cements and puts the low carbon road of GDP emission per unit into practice.

Description

【Technical field】 [0001] The invention relates to the technical field of wood-plastic materials. 【Background technique】 [0002] Plant fiber is divided into cell wall and cell cavity. The cell wall is mainly composed of cellulose, hemicellulose and lignin. The substances in the cell cavity are collectively called pectin. Pectin is distributed between fiber cells, fiber cells and non-fiber cells. , and also fill in some gaps in the primary wall to play the role of bonding. Lignin, cellulose and hemifiber are the main components of the plant skeleton. [0003] The main technology of pulping and papermaking is to remove lignin from wood fibers. One of its main by-products, lignosulfonate, is a kind of macromolecular organic material with wide molecular weight distribution. Due to its complex structure and difficult biodegradation, it is If the main organic pollutants in the paper industry are not fully utilized, they will flow into rivers and lakes, causing serious environment...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems of environmental pollution caused by pulping and papermaking and the waste of a large amount of lignin resources in the above prior art, the compatibility of wood fiber and resin matrix as raw materials for wood-plastic composite board materials, and the extrusion process. Facing the problem of melt structure rheology control and equipment bottlenecks and the inability of wood-plastic materials to be used in heavy structural materials, a wood-plastic material, namely plasticized wood, is provided, which makes full use of pulp and paper By-product lignin resources, changing the manufacturing process in the prior art, the product retains the advantages of wood-plastic materials such as waterproof, moisture-proof, insect-proof, termite-proof, flame-retardant, and good processability, and can be obtained in heavy-duty structural materials. Application; Another object of the present invention is to provide a kind of manufacture method of said plasticized wood