HTF-621

Manufacturer

Specialty Fabrics

Description

HTF-621 is a generation of film combining the chemical inertness and universal non-stick properties of PTFE polymers with maximum conformability and heat resistance. A bright blue color has been incorporated to enhance visibility on cured and uncured parts.

Compare the data shown for HTF-621 versus other materials typically used in composite fabrication in order to understand the superior performance particularly for complex shapes and high temperature resins. Note the ultra-high elongation.

	Elongation	Max. Temp
	%	%
HTF-621	550	600
Teflon FEP	300	500
Teflon PFA	430	550
Tedlar PVF	190	350
Halar ECTFE	200	350
Kapton Polyimide	90	750
Nylon 6 - Polyamide	370	450

*10 inch grip separation, 1 in/min crosshead speed, 1 inch width.

**2 inch grip separation, 20 in/min crosshead speed, 1/2 inch width.

Application

Outstanding temperature range: rated at 600ºF for composite fabrication. HTF-621 will withstand even higher autoclave temperatures under appropriate conditions. Consider HTF-621 for the most advanced thermoset and thermoplastic resin systems with epoxy, phenolic, bismaleimides, polyimides and other high temperature resins.

Unmatched drapability in the curing temperature range of epoxy, phenolic, BMI and comparable resins (350-400ºF), as well as at higher temperatures (600+ºF) where
HTF-621, in fact, proves to be the only conformable yet thermally stable film available. Improve efficiency and costs in the manufacture of contoured parts by using HTF-621 to reduce set-up times and reject rates.

Properties

Mechanical Properties	ASTM Method
Tensile Strength at break**	D-882-83	4300 psi
Elongation**	D-882-83	550%
Elastic modulus*	D-882-83	55000 psi
Yield Stress*	D-882-83	1400 psi
Yield Strain*	D-882-83	2.5%
Density	D-1505	2,15 g/cm³
Thermal Properties
Melt Point	D-1457-83	621°F(327°C)

*10 inch grip separation, 1 in/min crosshead speed, 1 inch width
**2 inch grip separation, 20 in/min crosshead speed, 1/2 inch width

Roll Lengths & forms:

HTF-621 non-perforated, P or P3 perforated films to accomodate all vacuum molding techniques.

48" x .001 x 500'
48" x .002 x 250'

Data Sheet

HTF-621

Material Safety Data Sheet (MSDS)

HTF-621

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Note: Technical information furnished is based on laboratory findings and is believed to be correct. No warranties of any kind are made except that the materials are of standard quality. All risk and liabilities arising from handling, storage and use of product, as well as compliance with applicable legal restrictions rest with the user. Nothing herein is to be taken as permission, inducement or recommendation to practice any patented invention or process without a license.