What Is Heat Treated Wood?

Carbonized lignin is known as physical "anticorrosive wood" and is also called heat treated wood. Originating from Europe, it has a history of more than ten years. Carbonized wood has been introduced into China in the past five years. Because it has superior properties different from ordinary wood and is more environmentally friendly, it has been favored by users. Carbonized wood refers to wood obtained by long-term pyrolysis treatment of the wood at a high temperature and pressure of 180 ° C to 250 ° C. The charred wood with high temperature treatment has outstanding texture, luxurious color and woody aroma, which is a distinguished decorative material.

Charcoal wood

By use environment

According to the use environment, it is divided into outdoor-grade carbonized wood and indoor-grade carbonized wood.

Press function

According to the use function, it is divided into carbonized wood for decoration and carbonized wood for structure.

The carbonization process of carbonized wood is divided into the following 3 processes:

(1) Deep carbonized anticorrosive wood originates from Europe and has a record of ten years of use. famous

SB / T 10508-2008 "charcoalized wood"

Notes on the use of carbonized wood:

1. Carbonized wood should not be used in environments exposed to soil and water.

2. Carbonized wood has a lower nail holding force than untreated wood, so it is recommended to use punching first and then nailing to install to reduce and avoid wood cracking.

3 Carbonized wood is recommended to use UV-resistant wood oil when used outdoors to prevent wood from fading after a long time.

The main quality indicators of carbonized wood are that the equilibrium moisture content of the wood is about 3% lower than that of the untreated wood, and the shrinkage rate is less than 5%, which is better than 7% of teak.

With the expansion of the carbonized wood market, there are many products of various types of nominal carbonized wood, but many of them have problems. Some are cooked with water vapor, and some are colored using the wood heat coloring process. Here they are only provided. Difference, for reference when selecting:

Because carbonized wood is processed in a high temperature environment, the polysaccharides (cellulose) in the wood are pyrolyzed to form monosaccharides, and the monosaccharides are attached to the surface of the wood. Over time, the surface is prone to decay, and the surface is brown or dark brown. . At the same time, carbonized wood is not capable of absorbing and binding water, but it is capable of absorbing free water. To mitigate these phenomena, three layers of paint can be applied to the surface of the charred wood.

Some substances produced during the charring process of charcoal charcoal furnaces are harmful and simple precautions should be taken to reduce the danger. The gas produced during the carbonization process has a high carbon monoxide content and is toxic. Therefore, when working near the kiln or pit, and when the kiln is opened for carbon unloading, care must be taken to provide proper ventilation to allow carbon monoxide to escape. In addition, carbon monoxide is also generated during the unloading due to the spontaneous combustion of hot charcoal.

Cautions for outdoor use

Due to the particularity of the use in outdoor environments, cracks, slight deformation of carbonized wood are normal and do not affect the strength of the structure.

Generally, outdoor wood protective coatings are permeable. A protective film is formed on the wood fibers, which can effectively prevent water from eroding the wood. Cleaning can be done with general detergents and tools can be brushes.

Carbonized wood home

Do maintenance once every 1 to 1.5 years; brush with a special wood water-based paint or oil-based paint to remind: workers should wash their hands before eating. Do not wash the work clothes together with other clothes.

The size can be customized, and the conventional size is roughly the same as the size of antiseptic wood on the market. For example: 100 × 100, 95 × 95, 15 * 95, 21 * 95, 25 × 150, 25 × 300, 30 × 400, 30 × 250, 50 × 150, 50 × 200 (unit: MM). Etc. The lengths are: 3 meters, 4 meters, 6 meters, etc.