Fast growing wood modifier capable of achieving hydrophobicity synergetic enhancement through alkyl ketene dimers and nano titanium dioxide

Abstract

The invention discloses a fast growing wood modifier capable of achieving hydrophobicity synergetic enhancement through alkyl ketene dimers and nano titanium dioxide. The modifier is prepared from the following raw materials in parts by weight: 3 to 3.5 parts of formaldehyde, 2 to 3 parts of urea, 1.5 to 2 parts of hexamethylenetetramine, 0.02 to 0.03 part of maleic anhydride, a proper amount of acetic acid, a proper amount of ammonium hydroxide, a proper amount of deionized water, 20 to 23 parts of DMDHEU of which the solid content is 42wt%, 1.5 to 2 parts of magnesium chloride hexahydrate, 10 to 11 parts of silica sol, 3 to 4 parts of alkyl ketene dimers, 2 to 3 parts of stearic acid, 10 to 11 parts of butyl titanate, a proper amount of absolute ethyl alcohol and 4 to 5 parts of glacial acetic acid. According to the modifier, the mechanical property of the tissue structure of the fast growing wood can be improved, the size stability is improved, the modified wood has excellent hydrophobic and dampproof capacities, effective components are not liable to lose, and outdoor furniture and outdoor wood equipment manufactured through the modified wood are durable, flame-resistant and waterproof, and are high in market competitiveness.

Description

technical field [0001] The invention relates to the technical field of wood modification, in particular to a fast-growing wood modifier in which alkyl ketene dimer cooperates with nano-titanium dioxide to enhance hydrophobicity. Background technique [0002] As an important means of production in social and economic construction, wood and wooden materials are not only widely used in various fields in daily life, but also widely used in industrial fields such as transportation, construction and aerospace. With the increasing shortage of forest resources worldwide, especially the sharp decline in the number of precious wood, a large number of fast-growing tree species have been widely planted to meet the global wood supply in recent years. Compared with natural forest trees, fast-growing tree species are limited by factors such as short growth years, resulting in great differences between early and late wood, loose materials, and poor mechanical properties. Therefore, it is di...

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Problems solved by technology

Although the mechanical properties of the modified fast-growing wood have been improved, the application of the fast-growing wood in the field of outdoor furniture and outdoor wood equipment has been affected due to its insufficient water absorption. It also hopes to have other additional properties to meet the demand for fast-growing wood such as outdoor furniture