Can carbonized wood be corroded by seawater? What wood is not corroded by the seawater

Deep carbonized wood technology is to put the wood in a fully enclosed deep carbonization equipment without adding any chemicals, and at the same time ensure that there is no oxygen and no water, high temperature (175 °C-212 °C) high pressure, and the wood is improved for 48-60 hours, and the moisture content of the wood after deep carbonization is less than 8%, which is golden brown and has a slight charcoal scorching smell.

Features of deep carbonized wood.

Moisture resistance. With the increase of treatment temperature, hemicellulose with strong hygroscopic performance is degraded to produce furfural and other substances during the treatment process, which reduces the hygroscopicity of wood and reduces the hydrogen bond between water molecules and wood molecules, thereby greatly reducing the hygroscopicity and water absorption of wood, and reducing the equilibrium moisture content of carbonized wood by more than 40% compared with untreated wood. The moisture content of carbonized wood used at room temperature is always maintained at about 6%.

Stability. Wood is carbonized in a high-temperature environment, because the carbonization process reduces the concentration of hydroxyl groups in wood components, reduces the hygroscopicity and internal stress of wood, and significantly reduces the exchange capacity of carbonized wood and external moisture, thereby greatly reducing the deformation and cracking caused by moisture changes in wood in use.

Durability. Complex chemical reactions occur in the process of carbonization of wood components, which changes some components of wood, reduces the nutrients of wood decaying bacteria, and inhibits the growth of fungi in wood from this link of the food chain. Therefore, the decay resistance and weather resistance of the carbonized wood are significantly improved, and it has the effect of anti-decay and anti-fungi.

Eco-friendliness. The treatment of wood carbonization is a pure physical technology, which only involves temperature and water vapor in the process of wood carbonization, without adding any chemicals or adding any foreign substances, so carbonized wood is quite environmentally friendly and safe, and it is an environmentally friendly material. In addition, the carbonization treatment makes some fast-growing wood have a stable, antiseptic and precious wood color, and these fast-growing wood can replace some precious wood, so carbonized wood has environmental protection significance.

Color. The color of carbonized wood is consistent inside and outside, and the color of carbonized wood can vary from yellow to dark brown depending on the tree species and process. For light-colored fast-growing woods such as pine, fir and poplar, carbonization can make the color of these cheap woods similar to the precious wood of the tropics, and have superior stability.

Mechanical properties. After ultra-high temperature pyrolysis treatment, a large amount of hemicellulose and lignin were degraded, which reduced the mechanical properties of wood. However, due to the low equilibrium moisture content of carbonized wood and the low moisture content during use, the suitable carbonization treatment temperature can improve the flexural strength and flexural elastic modulus of carbonized wood when used, but the impact toughness of carbonized wood is reduced, and the higher the temperature of treatment, the lower the impact toughness.

Easy to maintain. The resin and some inclusions of carbonized wood are all precipitated in the carbonization process, so the surface layer of carbonized wood has no oily components such as resin, and it is easy to paint. At the same time, because carbonized wood has the advantages of anti-corrosion, good stability, moisture-proof, etc., it is quite easy to maintain carbonized wood in daily use.

Carbonized wood is a wood that has reached a certain degree of antiseptic grade after high-temperature carbonization treatment.

The essence of carbonized wood is organic matter and will not be corroded by seawater. Metal products are generally susceptible to corrosion by seawater, because the metal itself or with other metals forms galvanic cells in seawater, resulting in redox reactions on their own. Carbonized wood is afraid of attachment or drilling of marine organisms in seawater.

Hope, thank you!

In fact, there should be no wood in nature that is not afraid of being corroded by seawater, which has a large number of microorganisms that can corrode wood.

But it is not difficult to prevent corrosion, and the easiest way is to paint.

Carbonized wood is green and environmentally friendly, safe and durable, suitable for indoor and outdoor is more and more popular among people, we use carbonized wood and often people forget the following matters, resulting in the decline of carbonized wood use effect.

Precautions for the use of carbonized wood.

1. Use environment.

When selecting carbonized wood, it is necessary to choose 212 degrees or 195 degrees products according to the outdoor or indoor use environment.

Carbonized wood is not recommended for use in environments that come into contact with soil and soaked water. In case of contact with the soil, it is necessary to make a toxic soil layer or an asphalt layer to isolate the soil. Outdoor-grade carbonized wood is not recommended for load-bearing elements.

2. Installation preparation and surface treatment.

When carbonized wood is used indoors, there are no special requirements for surface treatment. However, water-based paint treatment can prevent pollution and dust accumulation.

Outdoor carbonized wood should be painted on all sides before being installed outdoors, and then painted a second time after installation. UV-resistant outdoor paints are recommended, and biomass paints should be used with caution.

When carbonized wood is used outdoors, it is recommended to use a colored UV-resistant wood coating to prevent the wood from fading over time. And the more pigments, the stronger the UV resistance.

Keep away from rusty environments to avoid discoloration of iron like other woods. Keep away from alkaline pollutants such as cement to avoid alkaline contamination.

3. a connector.

To reduce the discoloration of the wood, stainless steel nails should be used.

The best type of nail is the one with a large head. Outdoor nail holes should be protected from water ingress.

It is recommended to use punch and then nail hole installation to reduce and avoid cracking of the wood, and do not use a hammer to hit the surface of the wood.

4. Maintenance.

The darker the paint color, the lower the maintenance costs in the future.

In order to get the best out of the product, it should be cleaned and inspected annually and repaired as soon as it is found. And it should be operated according to the maintenance instructions of the paint.

1. Carbonized wood should not be used in an environment that comes into contact with soil and water.

2. The nail holding force of carbonized wood is lower than that of untreated wood, so it is recommended to use first punching and then nailing hole installation to reduce and avoid wood cracking.

3. When carbonized wood is used outdoors, it is recommended to use anti-ultraviolet wood coating to prevent the wood from fading after a long time.

In order for preservatives to enter the wood effectively, the wood itself is specially screened. For example, wood such as Scots pine can achieve a close combination effect with preservatives, so it can be used for a long time, up to 30 years.

That's an interesting question.

1. The old ships are all made of wood, and it should be said that they are resistant to seawater corrosion.

2. In the past, the stern shaft tube of the big ship was sealed with iron pear wood, and it still depends on the type of wood.

First of all, the advantages of carbonized wood:

1. The nutrients of the wood treated at high temperature are destroyed, so that it has better anti-corrosion and anti-insect functions.

2. Due to the carbonization treatment, a protective film has been formed on the surface, and the carbonized wood has no disadvantage of surface fluffing compared with ordinary wood.

3. Due to its water-absorbing function being reorganized, carbonized wood is not easy to absorb water, resistant to moisture, and is not easy to deform and crack in an environment with large differences in external humidity, and is more stable than ordinary wood.

4. In terms of appearance, the carbonization process deepens the color of the wood, and the higher the temperature in the carbonization process, the darker the color of the wood.

It is with these excellent properties that carbonized wood is widely used. Especially in the use of outdoor furniture, the concave protrusion of natural textures, the feeling of stability and simplicity, and the decorative effect of carbonized wood echo with the courtyard green plants, waterscapes, and mountain stones, complementing each other.

Secondly, the processing process of carbonized wood.

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

Steps. 1. Heating up, high temperature cellar drying.

Heated and heated, the kiln temperature rises rapidly to 100°C. Then, when the temperature rises to 130°C and remains stable, the wood kiln drying begins, and the moisture content drops to almost zero.

Steps. 2. Heat treatment.

Once the kiln is drying, the temperature inside the kiln rises to between 185°C and 215°C. Depending on the final use of the carbonized wood, this temperature lasts for 2-3 hours.

Steps. 3. Air conditioning and humidity regulation.

The final stage is the use of a water sprinkler system for cooling; When the temperature drops to 80-90°C, humidification begins again to bring the moisture content of the wood to a usable level of 4-7%.

Carbonized wood is divided into two kinds, read the previous answer did not say, what is the depth of carbonized wood and surface carbonized wood has not been clear, with partial customers, the following is the difference between anticorrosive wood and carbonized wood:

1. Carbonized wood is wood that has been carbonized at high temperature, which is divided into surface carbonized wood and deep carbonized wood.

1. The surface of carbonized wood is grilled with fire, so that the surface of the wood has a very thin carbonized layer, the change of wood performance is analogous to the paint of wood, and the surface of the concave and convex wood grain can also be highlighted, and the surface is similar to the fire wood, resulting in a three-dimensional effect. The application aspect is concentrated in handicrafts, decoration materials and aquarium products. It is also known as craft carbonized wood, charcoal burnt wood.

2. Deep carbonized wood is also known as fully carbonized wood and homogeneous carbonized wood. It is a wood treated by 195 degrees -212 degrees high temperature and high pressure oxygen-free and anhydrous carbonization technology, due to its nutrient composition is destroyed, so that it has a good anti-corrosion and insect-proof function, due to its water-absorbing functional group hemicellulose is recombined, so that the product has good physical properties, deep carbonized wood is a real green environmental protection product, adsorption formaldehyde beyond bamboo charcoal, carbonized wood not only has anti-corrosion and insect-proof properties, but does not contain any harmful substances, not only improves the service life of wood, and will not be soaked in the production processThe disposal of waste after use does not have any negative impact on humans, animals and the environment. Deep carbonized wood in Europe has been advanced in our country for nearly ten years of experience, deep carbonized wood is the main replacement product after the ban on CCA anticorrosive wood.

2. Antiseptic wood.

Preservative wood is a wood that uses preservatives to penetrate and solidify the wood, so that the wood has the function of preventing decay from decay, bacteria, decay, and microbial damage. Among them, the effectiveness of wood preservatives is mainly determined by their toxicity to harmful organisms, and the greater the biological toxicity to harmful wood, the stronger its antiseptic effect. Under normal circumstances, wood should also add other agents, one is to play an antiseptic role, and can enhance the stiffness, strength, durability of wood, with anti-rot, anti-termite, anti-fungal effect, so mainly used in outdoor flooring, sleepers and contact with water and soil area, for the sake of environmental protection now many projects purchase anticorrosive wood for sleepers, with carbonized wood for indoors.

That's our antiseptic wood:

The way to distinguish between the two is:1The surface of the antiseptic wood is yellow-green, and the surface of the carbonized wood is brown; 2.

Since the soaking of the cross-section will not reach 100%, the color of the cross-section will be found to be inconsistent when the antiseptic wood is cut, while the cross-section of the deep carbonized wood is the same color. 3.The smell of the antiseptic wood potion is more serious, and it emits a foul smell after soaking in water.

Carbonized wood is treated without medicated water, and the original woody fragrance of the wood is retained.

I hope you will adopt it, like it, thank you!

Antiseptic wood is the wood after special antiseptic treatment, which has the effect of anti-rot, anti-termite and anti-fungus. It is the preferred material for outdoor wood flooring, garden landscape flooring, outdoor wooden platform, terrace flooring, outdoor wooden plank road and other outdoor anticorrosive wood pergola. At present, the preservatives mainly include CCA, ACQ and CAB, the main component of CCA is copper arsenic, the main component of ACQ is ammonia-dissolved alkyl amine copper, and the main component of CAB is copper file.

The dosage of preservatives is determined according to the conditions of use, specifically see the recently issued national standard "Antiseptic Wood". There is also a kind of preservative wood without preservatives - deep carbonized wood, also known as heat-treated wood. Carbonized wood is to carbonize the effective nutrients of wood, and achieve the purpose of antiseptic by cutting off the nutrient chain of decaying bacteria.

It is a real green building material, environmentally friendly building materials. There is also a pure natural Canadian red cedar (red cypress), which has not undergone any treatment, mainly by containing an enzyme inside, exuding a special fragrance to achieve the purpose of preservative. Carbonized wood is carbonized wood Carbonized wood is carbonized wood, carbonized, under the word charcoal is fire, as the name suggests, it must meet the conditions of no water and high temperature, in order to protect the strength of the wood and control the carbonization process, there must be a protective medium.

The corrosion of metal by seawater is relatively serious, and the corrosion of wood is relatively weak. In addition, the wood of the shipbuilding has been baked and fumigated to eliminate insects to reduce insect moth, and the hull wood should be coated with tung oil to prevent corrosion, which can greatly reduce the corrosion of seawater. Including the current aircraft carrier, it must be treated with anti-corrosion treatment for a period of time.

So the seawater is originally salt water, and it is not easy to rot wood? And then there's the salt water, which can be so easy to turn over.