Magnesium oxide board or "mgo board" in short,It is fireproof,waterproof,light weight,high strength,moldew and termite proof
wall panel,thickness range from 4mm-30mm,It consist of 3 element,(magnesium oxide),(salt) and (water).
MgO boards predominately come in three different types:
magnesium oxychloride hydrate
magnesium oxysulfate hydrate
magnesium oxyphosphate hydrate
They are fomulated with different kind of salt.
Most of mgo board export from China is magnesium oxychloride hydrate type,
Magnesium oxide resist 1400'c fire and low heat transfer,it is one of the best fireproof material in the world.
Most of magnesium oxide mine located in Changbai Mountain,north part of China.
Chinese has rich experience of manufacturing and using magnesium concrete over hundred years.
1-screws and frame affect by chloride ions and get rust when moisture is high
2-panel damp and cry in rainy days,wet and dray cause plaster crack
3-panel get powery on the surface after frequent wet and dry
4-panel has risk of cracking at the joint after few months
1-Pour a cup of purified water,immerse some fine screw and mgo board sample.Check corrosion after 7 days.
2-Contact local testing lab,such as SGS. chloride content inspection,cost $300-400. It takes 7 working days.
1-Use stainess screw and stainless frame or aluminmium frame.
2-Replace steel frame by wood frame and stainless screw
3-Laminate a plastic film on reverse that next to the steel frame
4-Dismantle magnesium chlrodie board,use chloride free mgo board instead.
1,ROCKMAX is new generation chloride free mgo board, do not have corrosion problem.
2,ROCKMAX is approved panel,test in full
3,ROCKMAX's material safety meet European "REACH",exclude 191 kinds of harmful material may effect health.
4,ROCKMAX provide guarrantee for steel frame system safty,compensate 200% on CNF price ,when chloride>0.5%