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THERMOWOOD

Thermal wood is a form of heat treatment (no chemical) to change the structure of the wood to increase durability, anti-termite warping, increase the water resistance, fire resistance for materials. Thermal wood is made from softwood and hardwoods of North America and Europe.

In order to understand the nature of heating wood and the reasons behind the durability of the product, we will look briefly at the structure of the wood.

Thermowood (source: Internet)

The structure of the wood consists of three main components: Cellulose 35-55%, Hemicellulose 15-25%, and Lignin 25-35%. Depending on the type of lumber or broad leaves, the composition of the wood will change. As we can see, the nature of cellulose and hemicellulose is very susceptible to environmental influences, resulting in rotting, swelling and warping. So to change the structure we will directly affect these components to increase the durability of wood and reduce the amount of waste VOC (Volatile organic compounds), including formaldehyde, help to protect the environment.

Thermowood (source: Internet)

There are many different heating methods in the world nowadays due to the addition and improvement of the process. However, we have five main types of processes that have been studied and applied since the twentieth century.

Thermo wood heating method - Finland

Most people who have worked in the wood industry in Europe are not familiar with this method, and mention it can not fail to mention the Finland country. Thermo wood is a method of using heat at around 180oC and water vapor, then the material is compressed under 1 atmospheres (atmosphere ~ 9.8 x 10 ^ 5 P.a).

Thermowood (source: Internet)

Methoding Les Bois Perdue - France

This method with the Thermo wood method is near the same, this method will be drying before given.

Rétification - France

This is an in 2 methods that the French are used of heating wood, wood will be found for 12% before given to Nito gas (maximum 2% Oxy) for compressed.

Thermowood (source: Internet)

Plato - Netherlands

This method is based on the use of hydrothermal to bring the wood to moisture below 10% the vulcanized at 170-190oC temperature under a pressure of 1 atm.

Thermowood (source: Internet)

OHT - Oil HeateTreatmentnt - Germany

The wood is put into a tank of oil boiled up to 220oC for heating, addition can add additives to convert the finished product as desired.

Thermowood (source: Internet)

 

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