mgo board magnesia board magnesium oxide board
Magnesium oxide, more commonly called magnesia, is a versatile mineral that when used as part of a cement mixture and cast into thin cement panels under proper curing procedures and practices can be used in residential and commercial building construction. Some versions are suitable for a wide range of general building uses and for applications that require fire resistance, mold and mildew control, as well as sound control applications and many other benefits. As an environmentally friendly building material, magnesia board has strength and resistance due to very strong bonds between magnesium and oxygen atoms that form magnesium oxide crystals (with the chemical formula MgO).
Magnesia boards are used in place of traditional gypsum drywall as wall and ceiling covering material and sheathing. It is also used in a number of other construction applications such as fascias, soffit, shaft-liner and area separation, wall sheathing, and as tile backing (backer board) or as substrates for coatings and insulated systems such as finish systems, EIFS, and some types of stucco.
Magnesia cement board for building construction is available is various sizes and thickness. It is not a paperfaced material. It generally comes in a light gray, white or beige color. Numerous versions and value of grades exist including smooth face, rough texture, utility, versatile grades as well as different densities and strengths for different applications and uses.
Presently various magnesia cement boards are widely used in Asia as a primary construction material. Some versions have been designated as the ‘official’ construction specified material of the 2008 Summer Olympics and some versions are used extensively on the inside and outside of all the walls, fireproofing beams, and as the sub-floor sheathing in one of the world's tallest buildings, Taipei 101, located in Taipei, Taiwan.
Magnesia cement is manufactured in a number of areas around the world, primarily near areas where magnesia based ore (periclase) deposits are mined. Major deposits are found in China, Europe, and Canada.[1] Magnesia ore deposits in the US are negligible. Estimates put the use of magnesia board products at around 8 million ft² in Asia alone. It is gaining popularity in the US, particularly near coastal regions.
Applications
· Interior wall and ceiling board
· Exterior wall and fencing board
· Exterior sheathing
· Trim materials
· Fascias[2]
· Soffits
· Shaft-liner and area separation wall board
· Tile backing (backer board) and underlayment
· Substrates for coatings and insulated systems such as direct-applied finish systems, EIFS, SIPS, Portland type stucco and synthetic stuccos.
· Purpose and use
Magnesia is widely used primarily as wallboard alternative to conventional gypsum-based drywall and plywoods. The magnesia boards can be scored and snapped, sawed, drilled, and fastened to wood or steel framing.
Magnesia boards are a good example of the advances made in construction materials to meet changes in building codes for safety and durability
· Ratings and testing:
o Fire-resistant (UL 055 and ASTM-tested and A-rated)
o Water-resistant (freeze/thaw-tested for 36 months)
o Mold/fungus/bug free (non-nutritious to mold, fungus, insects ASTM G-21)
o Impact-resistant (ASTM D-5628)
o NYC approved (MEA # 359-02-M)
o Silica/asbestos free
o STC-rated 53-54
· Can be used in the place of traditional drywall or cement boards. No special tools required.
· Hard non-absorbent surface – using fibreglass backing - with no paper.
· Can be used in applications like cement-based siding subject to using water-proof coating systems.
· Available in colors.
· Energy efficient – magnesite calcines at approx 780 Celsius, compared to over 1,400 Celsius required to form traditional Portland cement or calcium oxide, the starting material for the preparation of slaked lime or portlandite used in common mortar and plaster.
· Magnesia boards have been mentioned in articles about biologically friendly construction and risks of mold infection.
· Comparable in cost to cement board made from Portland cement, with numerous advantages over that material for wet applications.
Specification :
1220x2440x3~40mm
900x2700x3~40mm
900X2400X3~40mm
900x1800x3~40mm
1220x3000x3~40mm
1220x3660x3~40mm
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MATERIAL SAFETY DATA SHEET
1. Product Identification
Magnesiacore boards of various sizes with thickness ranging from 3mm to 20mm thick.
Use: MagnesiaCore boards are designed for board applications that require
properties such as fire resistance, moisture resistance, light weight, impact
resistant, sound and thermal insulations, environmentally friendly and other
properties required for applications in walls, floors and ceiling assemblies.
2. Composition/Information on Hazardous Ingredients
Ingredients
Magnesium Oxide
Calcium Chloride
Wood detritus
Pearl rock powder
Alkali resistant glass fiber matt
Contains no asbestos
Appearance and odor: Surface finish may vary from sooth to uniform machine texture.
No odor.
3. Health Hazards Identification
Routes of Entry: Inhalation and Dermal
Potential Health Effects: Skin and eye irritant
MagnesiaCore boards does not present an inhalation, ingestion or contact health
hazard unless subjected to operations such as sawing, sanding or machining which
result in the generation of airborne particles.
It is recommended that a NIOSH approved respirator be worn whenever working with
this product results in airborne dust exposure exceeding the prescribed limits.
Skin contact: Continued and prolonged contact may result in dry skin.
Eye contact: Direct contact may cause mechanical irritation.
Inhalation: Target Organ: Respiratory System
Signs and Symptoms of Exposure to Airborne Dust: Continued and prolonged
exposure to airborne dust concentrations in excess of the PEL/TLV may result in
cough, dynspnea, wheezing and impaired pulmonary function.
Medical Conditions Generally Aggravated by Exposure: Overexposure would generally
aggravate respiratory system dysfunctions.
4. First Aid Measures
First Aid Procedures:
a. Eye: Immediately flush eyes with water for 15 minutes and get medical attention.
b. Skin: Flush and wash skin with soap and water. Get medical attention if irritation
persists.
c. Breathing: Move the exposed person to fresh air at once. If not breathing initiate
pulmonary resuscitation. Get medical attention.
5. Fire Hazards
a. Non combustible
b. Extinguishing media: Dry chemical, foam, water, fog or spray
