Data Expected Jan 2014

DESIGNING WITH FIRESHIELD®

 

This section is intended for engineers who wish to check the impact of adding a FireShield® layer to a composite laminate. Not all potential issues have been researched. If there are critical parameters in the design, prototype laminates should be prepared and tested. For Technical Data Sheets, click here.

Material Property

 

Thermal conductivity (W/m °C)

 

 

 

Specific heat capacity (J/kg °C)

 

 

 

Original thickness (mm)

 

Density (kg/m3)

 

 

Heat of decomposition (J/kg)

 

γk

 

 

 

 

zk (s-1)

 

 

 

 

 

Activation Energy Eak  (kJ/mol)

Material State

 

Virgin

Intumesced

Charred

 

Virgin

Intumesced

Charred

 

-

 

Virgin

 

 

‘Melting’

Intumesced

Charred

 

 

 

 

‘Melting’

Intumesced

Charred

 

 

 

‘Melting’

Intumesced

Charred

To be supplied

To be supplied

To be supplied

To be supplied

To be supplied

To be supplied

To be supplied

 

 

 

 

 

 

ASSEMBLY of FireShield Protected Laminates

      Coming Soon

PRE-PREG

FireShield® can be converted into a pre-preg form in the usual way.

 

Using FireShield® as a pre-preg has the advantages that it eliminates chemical shedding, and provides a material with tack, convenient for vertical lay-ups.

 

Regina can arrange for pre-preg manufacture, with the resin nominated by the client. Shelf life can be preserved by transporting the rolls in dry-ice packs, or by using refrigerated containers.

Citations

Feih, S., Manantpon, K., Mathys, Z., Gibson, A.G. and Mouritz, A.P.,

‘Fire structural modelling of polymer composites with passive thermal barrier’, Journal of Fire Sciences, Vol. 28, (2010), pp. 141-160.

 

Kandare, E., Griffin, G.J., Feih, S., Gibson, A.G., Lattimer, B.Y. and Mouritz, A.P.,

‘Fire structural modelling of fibre-polymer laminates protected with an intumescent coating’, Composites A, Vol. 43, (2012), pp. 793-802.

 

Mouritz, A.P., Feih, S, Kandare, E. and Gibson, A.G.,

‘Thermal-mechanical modelling of laminates with fire protection coating’,

Composites B, Vol. 48, (2013), pp. 68-78.

REPAIR of low-impact damage

     Normal patch repair techniques - Coming Soon

     Non-Structural Laminate

     Where FireShield® is replacing an existing surface tissue, bulking of the material in die or mould is

     unlikely to be a concern.

 

     Potential maximum compression of the substrates, without FireShield® chemical, is:-

 

     Tissue                                         5%

     Glass Cloth, plain or satin          8%

 

 

     Structural Laminate

     As the outer plies are not usually considered to contribute to the physical properties of a laminate,

      no impact is expected on designed strength, stiffness or TG  from the use of a FireShield® layer.

      Surface hardness should be tested, to ensure that significant chemical “wash” into the resin that

      moves through the FireShield® to the face, has not occurred during manufacture.

 

 

     Thermal Performance

          - Fire performance below 800°C

               Theoretical calculations can provide indicative design information, but prototype testing is

               needed to confirm fire performance.

 

               Single Laminate

               Expect Char thermal conductivity = 0.04-0.07 J/m.K.

 

               Multi Layer Panels (Passive Fire Protection Panels)

               The data in the following table can be used to determine theoretical minimum cost/weight/

               thickness, using the predictive equations provided in the citations below.

Click the words on the sub-menu below to jump to the section you require:

          - Fire performance above 800°C

               Above 800°C the relevant properties of a surface layer include self extinguishment and

                 integrity retention.  See Higher Temperature Applications.

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