Korean Wellmark Panels, a natural green material, a material produced from the successful application of the Korean coal plank research project
Quoted from: KFS Journal, Vol. 21(3), 2010: 237-247
Properties of Charcoal Board Manufactured from Domestic Wood Waste
Project Manager: In Su Seo, Hwa Hyoung Lee
This research was carried out to examine the properties of black charcoal board, in order to find the proper manufacturing condition for the black charcoal-board made of the charcoal. The charcoal in this study was distillated from domestic wood waste, and it were also the purpose of this study to see if the black charcoal-board has the advantageous properties of charcoal as a well-being building material against the sick house problem. Domestic wood waste was consisted of MDF 40%, PB 30%, plywood 15% and wood 15%, respectively. Black charcoal board was produced by hot pressing with following conditions; temperature 170℃, three stage pressing cycle of 40-10-40 kgf/㎠(1min.-2.5min.-5min.) and non formaldehyde adhesives〔P15%+M5%:MDI(M), poly vinyl acetate emulsion(P). Fine mixed particle size〔#6-12(16.9%), #12-18(16.7%), #12-40(47.2%), #40-60(9.5%), #60-100(5.9%), less than #100(3.8%)〕gave better results than larger particle size〔over #6(33.8%), #12-18(17.7%), #12-40(37.7%), #40-60(6.4%), #60-100(2.6%), less than #100(1.8%)〕. Final moisture content of the mat was best at 36%. Black charcoal-board showed less MOR and IB(internal bond), more WA(water absorption) than that of white charcoal-board. Black charcoal board showed not only the same gas adsorption and dimensional stability as white charcoal board but also good cutting, nailing and drilling for indoor environment systems
Keywords: charcoal board, final mat moisture content, charcoal particle size, hot pressing cycle, domestic wood waste
Charcoal is the blackish residue consisting of mainly impure carbon obtained by partial burning or destructive distillation of organic material. It is usually produced by heating wood in the absence of oxygen. The charcoal shows soft, brittle, lightweight, black, and porous properties. And it is composed of 50% to 95% carbon with the remainders of volatile chemicals and ash. Charcoal, being almost pure carbon, yields a larger amount of heat in proportion to its volume rather than a corresponding quantity of wood; as a fuel it has the further advantage of being smokeless. Generally, the charcoal which has higher carbonization temperature shows the higher ignition temperature. When the charcoal has the higher remainders of volatile chemicals in it, the charcoal shows the lower ignition temperature. ( Shin et al, 1983). An increase of C content as well as a decrease of H
Received for publication: Feb 7, 2010 ; Reviewed: March 6, 2010 ; Accepted: May 15, 2010
1) This study was supported by Technology Development Program of the Ministry of Agriculture and Forestry, Republic of Korea.
2) College of Agriculture and Life Science, Chungnam National University, Daejeon 305-764, Korea
† Corresponding author: Hwa Hyoung Lee
content was observed up to about 600 °C with increasing the carbonization temperature. The changes in the ratio of atoms became stable at above 600 °C (Jo et al 2009, Krzesinska and Zachariasz. 2007). In the modern method, wood is raised to a high temperature in an iron retort, and industrially important byproducts, e.g., wood alcohol, acetone, and acetic acid, are saved by condensing them to their liquid form. Recently, charcoal has attracted a lot of attention not only by its environmentally friendliness but also by its unique functional characteristics, such as catalysis, moisture absorption, soil conditioning, filtering, deodorization, purification, far-infra red emission, and electromagnetic shielding effects. (Chung 1975, Kong and Kim 2002, Jo, Ahn and Choi 2005, Lee et al. 2001, Lee et al. 2003, 2005, Jo et al. 2009, Lee and Kim 2002, Kim and Lee 2006, Shin et al 1983, Shin and Kim 2006, Wang and Hung 2003 ). Charcoal could be activated to increase its effectiveness as a filter. Activated charcoal readily adsorbs a wide range of organic compounds dissolved or suspended in gases and liquids. Charcoal is often used as filter materials to remove bacteria and undesired tastes in air or water. Historically, charcoal has been used in great quantities for industrial fuel. Charcoal was consumed in the past as dietary supplement for gastric problems in the form of charcoal biscuits. Now it can be consumed in tablet, capsule or powder form for the digestive benefits. Charcoal absorbs gases and toxins to help heartburn, flatulence or indigestion. ( Rolland 2006, Braithwaite 1856 ).
Indoor air quality could affect health and comfort of building occupants. The more people are increasingly interested in home air purification because of a lot of pollutants of indoor air quality and sick house syndrome. Moreover, recent findings have demonstrated that indoor air is often more polluted than outdoor air. For improving the quality of indoor air, basket and container filled with a lot of lump of charcoal were placed beside television and computer, in the wardrobe, and in the shoe closet. However, these kind application of charcoal would not be the best way in terms of aesthetic beauty and efficiency. Reclamation of charcoal under the building site gives higher electric potential, higher anion emission, and better environment condition for human body such as the inhibition of oxidization, air purification, gas absorption, humidity control and far-infra red emission. Recently, non-woven fabric sack filled with charcoal powder is placed under floor and living room, and non-woven fabric sheet with charcoal powder is installed in the wall for removing toxic gas and smell. Especially, volatile organic compounds and formaldehyde are regulated in indoor air environment. Since people spend most of their time today at home or in an office, long-term exposure to VOCs in the indoor environment can contribute to sick building syndrome. Many building materials such as paints, adhesives, wall boards, and ceiling tiles emit formaldehyde, can occur to the mucous membranes and can make a person irritated and uncomfortable. There are also many sources of VOCs in office buildings, which include new furnishings, wall coverings, and office equipments such as photocopy machines which can emit VOCs into the air. 『The indoor air quality control law of multiplex use facility etc.』has been revised and enforced from on May 30th, 2004 (Lee 2006). Proposition of this indoor air quality control law which has concerned introducing a quality-certification process of the wood panel products for the production, imports, circulation and the use(Article 13 and Article 14) has given lawmaking notice on May, 2009 and this law will be put into force from 2012.
Lee et al (2004, 2005) has attempted to use the advantage properties of charcoal board for promoting a pleasant residential environment through the improving indoor air quality. Lee et al (2006) developed the new method for the fast making the charcoal board and charcoal board composite with excellent properties such as dimensional safety, gas absorption, and far-infra red emission for building interior material. Park et al (2009) also invented manufacturing techniques of crack-free carbonized board from fiberboard. Wood-ceramics are developed from woody waste as a new porous carbon materials obtained by carbonizing woody material impregnated with thermosetting resin, such as phenol resin, in a vacuum furnace at high temperatures(Fan et al 2001, Hirose et al 2001 2002, Iizuka et al 1996, Kano et al 1997, Lee and Kim 2002, Oh and Okabe 2002, Okabe and Saito 1996). But these wood-ceramics have been focused to special use and have a lot of problems awaiting solutions such as mass production process of large scaled carbonization and easier process for cutting, nailing and drilling for indoor environment systems. The aim of this study was to deeply examine the properties of black charcoal board, to characterize the properties of the black charcoal board manufactured from domestic wood waste which has caused problems for waste disposal, and to see if it has the advantageous functional properties of charcoal as a well-being building material for indoor environment.
Physical properties of charcoal board according to the charcoal particle size and final mat moisture contents (* Duncan multiple test)
These types of composite wood panels have been focused on using as green materials and have a wide range of solutions such as large-scale mass production processes. The application of composite charcoal panels makes the interior become a trend to use environmentally friendly materials, better for health along with utilities from replacing and beautifying home interiors. Installation using carpentry tools: Easier sawing, nailing and drilling for indoor environmental systems.
The purpose of this study is to examine in-depth the properties of black charcoal board, which is characteristic of the characteristics of black charcoal board produced from domestic wood scrap, which helps with waste treatment and control problems. investigate the beneficial functional properties of coal (carbon material). As a happy building material for the indoor environment.
The successful research of recycled wood into charcoal powder is a prerequisite for the development and production of carbon composite panels (carbon + PS Resin) for paneling products with outstanding advantages: ultra-lightweight materials. + eco-friendly + lasting + luxurious
The main components of Wellmark Korean wall panels are Carbon charcoal and PS plastic with electrical insulation, heat insulation, antibacterial, water resistance, carpentry fungicides, cracking and deformation resistance, chemical corrosion resistance.
Activated carbon also has the function of air purification, anti-worm,
Wellmark panels are manufactured by extrusion technology, so the color, size and shape of the product are controlled synchronously, to truly realize customized customization and flexible decoration, minimizing costs. and save forest resources.
Wellmark Korean panels are the ideal replacement for traditional cladding centers, with advantages such as light weight, high resistance to moisture and mildew, easy maintenance and quick installation, waterproof.
Wellmark Panels 10 Advantages & Outstanding Features:
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--Filter air, dehumidify, and greenen the environment
Adding to the surface is a 3D hot stamping and embossing mold that gives a strong, noble and elegant impression and is light with an aesthetic surface.
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