 Homemade megnesia cement problem
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hsieh
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Fri Nov 26 2010, 03:52PM
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Registered Member #1412
Joined: Thu Mar 27 2008, 04:07PM
Location: Taipei Taiwan
Posts: 278
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I occasionally read something about magnesium cement. I decided to make some because I like to watch interesting reactions and I thought it might be a good homemade rocket engine nozzle material. Some webpages mentioned that it is stronger than ordinary cement and can stand high temperature.
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IntraWinding
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Registered Member #2261
Joined: Mon Aug 03 2009, 01:19AM
Location: London, UK
Posts: 581
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I don't know about Magnesium Oxide cement, but I imagine Magnesium Oxide ceramics are made by sintering the pressed pure powder at extreme temperature. They might use small amounts of other ingredients to reduce the sintering temperature or modify the ceramics properties in the same way metal alloys are formulated.
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![Back to top](http://www.premierchemicals.com/corner/articles/cements.htm</a><a class='bbcode bbcode-link' href='hyperlink"' rel='external' >https://4hv.org/e107_images/generic/bbcode/link2.png[/img]</a> url]http://www.greenhomebuilding.com/pdf/MgO-GENERAL.pdf</a><br />I search the web and found that there are two kinds of magnesium cement. One is made from MgO and MgCl2,Another is made from MgO and phosphate. I bought these chemicals and begin my experiment.<br /><br />The mixture of MgO and MgCl2 didn't set at all(in several hours).The mixture of Mgo and Diammonium hydrogen phosphate set in several minutes.But I can crush it with my hand easily.<br /><br />What's wrong with my experiment? How can I fix it?<br />Thanks
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