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INTERNATIONAL INC.
Data Sheet AIRPAD HTX
A non-silicone tooling rubber for caul sheets and flexible tooling
lM DESCRIPTION
Airpad HTX is an uncured, non-silicone rubber for manufacture of pressure caul sheets, flexible mandrels, and rubber
tooling. Airpad HTX has been developed for longer service life and can be used with liquid release agents. Airpad HTX
caul sheets improved part quality on the vacuum bag side of the part.
Airpad HTX pressure intensifier provides uniform pressure distribution during autoclave processing. Airpad HTX will
take high temperature similar to silicone rubbers but will not cause silicone contamination. Airpad HTX can be
reinforced with Airtech Toolmaster Prepregs, which bond well and do not generate volatiles that could also cause
delamination.
M@ BENEFITS
+ Adheres well to A4000B0S and has a high temperature resistance for longer lasting caul sheet.
+ Airpad HTX bonds to itself aggressively, making it easier to repair.
+ Liquid release agents can be applied to cured Aipad HTX allowing for more complex intensifiers.
@ TECHNICAL DATA
Properties listed are typical for the fully cured material
Test method
Material type Uncured non-silicone rubber
Colour Gray
Maximum use temperature 204 C (400 F)
Elongation at break 550% ASTM D412
Hardness 70 Shore A ASTM D2240
Tensile strength 1900 psi (13.1 MPa) ASTM D412
P 24 months from date of shipment
Shelf life when stored in the original packaging
Storage conditions Do not freeze
lM SIZES
Packaging Type
0.0625 inch (1.59 mm) 54 inches (137 cm) 50 feet (15.24 m) roll
M@ APPLICATION
Molding Guidelines:
+ Mold Airpad HTX off a part, dummy part or mold which is stable at high temperature and capable
of high pressure.
+ Airpad HTX has low tack, a light spray of Airtac 2 or use of a heat gun will aid layup onto vertical surfaces.
+ Airpad HTX will have longer service life if covered with a release film such as Airtech A4000BOS bondable
one side release film 0.002 inches (50 um) thick, during the layup process.
+ Liquid release agents should be tested prior to use on part manufacture. Consult Airpad HTX User
Manual for detailed instructions.
Recommended Cure:
+ Apply full vacuum throughout cure cycle and pressurize autoclave to 100 psi (7 bar), minimum
recommended pressure is 60 psi (4 bar).
+ Heat to 350 F (176 C) and hold for 1 hour, then cool to room temperature before removing
vacuum and demolding from master mold.
@ NOTES
+ The maximum use temperature is dependent upon the duration at maximum temperature and is process
specific, Airtech recommends testing prior to use.
Last updated : 2024-07-01
Catalog position : Rubber
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