To send content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to .
To send content items to your Kindle, first ensure email@example.com
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about sending to your Kindle.
Note you can select to send to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
The idea of flame retardant materials dates back to about 450 BC, when the Egyptians used alum to reduce the flammability of wood. The Romans (in about 200 BC) used a mixture of alum and vinegar to reduce the combustibility of wood. Today, there are more than 175 chemicals classified as flame retardants. The major groups are inorganic, halogenated, organic, organophosphorus, and nitrogen-based flame retardants, which account for 50%, 25%, 20%, and >5% of the annual production, respectively.
In many cases, existing flame retardant systems show considerable disadvantages. The application of aluminum trihydrate and magnesium hydroxide requires a very high portion of the filler to be deployed within the polymer matrix; filling levels of more than 60 wt% are necessary to achieve suitable flame retardancy, for example, in cables and wires. Clear disadvantages of these filling levels are the high density and the lack of flexibility of end products, the poor mechanical properties, and the problematic compounding and extrusion steps.
Email your librarian or administrator to recommend adding this to your organisation's collection.