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.
• Adheres well to A4000BOS 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.
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 |
| Shelf life | 24 months from date of shipment
when stored in the original packaging | |
Storage conditions
| Do not freeze
| |
| Thickness | Width | Length | Packaging Type |
|---|
| 0.0625 inch (1.59 mm) | 54 inches (137 cm) | 50 feet (15.24 m) | roll |
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 µm) 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.
• 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
As the conditions or methods of use, including storage, are beyond our control, Airtech International, Inc. does not assume responsibility for the performance of this material for any particular use. The material is sold "as is". Airtech International, Inc. disclaims, and buyer waives, any and all implied warranties, including without limitation the implied warranties of merchantability and of fitness for particular use. The information contained herein represents typical properties and should not be used for specification purposes. Any translation is provided for your convenience only. The official language is English and the official law is California, USA.
