*Chemical Shedding

CHEMICAL TYPES

 

INTUMESCENTS

 

                        FireShield® W:           based on ammonium polyphosphate, but a non-hygroscopic form of

                                                            the product, so it  can also be used in exterior applications where

                                                            weathering may be a concern.

 

                        FireShield® HT-W:    a form suitable for the higher temperature (HT) curing epoxy resins,

                                                            common in aerospace, subject to weathering.

 

ATH – Aluminium TriHydrate

 

                        FireShield® ATH:      when an ATH-filled composite is subjected to temperatures above

                                                            230°C/446°F, the ATH exfoliates 35 per- cent of its weight as water

                                                            while the remainder becomes inert (noncom- bustible) aluminum

                                                            oxide (Al₂O₃). This reaction is endothermic, or heat absorbing;

                                                            the water acts as a heat reducing agent to hinder fire spread.

 

MDH – Magnesium Hydroxide

 

                        FireShield® MDH:    MDH decomposes at a higher temperature than ATH, making it

                                                           useful when working with engineering thermoplastic resins, such as

                                                           polyamides and polypropylene.

 

 

SUBSTRATE TYPES

Select carrier (substrate) properties to suit needs of laminate manufacture.

CHEMICAL SHEDDING

Both satin and plain weave glass cloth substrates exhibit some degree of chemical shedding, as the glass area available for bonding is lower than in the case of tissue.  The degree of shedding, at around 2% of gross weight, is not sufficient to impact on the fire protection, nor does it provide any health hazards, but it is unacceptable in clean-room situations.  In such cases, the FireShield® can be converted into a Pre-Preg form.

Refer to Laminate Manufacture for process specific comments.

Refer to our Data Sheets page for technical and data sheets.

For Pricing of specific combinations, click here.

A range of chemical types & substrates provides fire protection for most composite laminates, whilst allowing optimum laminate strength and stiffness - no filling required in the base resin.

Substrate

Non Woven Tissues

 

 

Woven

 

 

Glass

 

 

Plain Weave*

Satin Weave*

Strength

LOW

 

 

HIGH

HIGH

Shear

NONE

 

 

MEDIUM

HIGH

Cost

LOW

 

 

HIGH

HIGH

Typical Applications

RTM; ETC.

 

 

PULTRUSION

3D MOULDING

© 2015  All Rights Reserved  |  Regina FireShield, Australia