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DeWAL DW 211

Category:	PTFE , Polytetrafluoroethylene
Manufacturer:	DeWAL Industries
Trademark:	DeWAL
Fillers:	-
Ports:	Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms	FOB, CIF, DAP, DAT, DDP
PDF:	2KYgwR_DeWAL-DW-211.pdf
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Message
D/W 211 is a film, skived from virgin PTFE, that has been etched on one side with sodium ammonia (D/W 216), after which a primer has been applied to enhance bonding to elastomers and pressure sensitive adhesives. This surface treatment allows PTFE, which normally exhibits very poor adhesion, to be bonded to other materials. In some applications, sodium ammonia etched materials exhibit somewhat higher strengths than those etched with sodium naphthalene (D/W 212). Applications for sodium etched PTFE include bonding to elastomers to produce laminated diaphragms, as well as the application of pressure sensitive adhesives in the production of PTFE pressure sensitive tapes. In all of the above applications, the lamination or adhesive application is usually accomplished with a primer that is specific to the material being applied.

Message

D/W 211 is a film, skived from virgin PTFE, that has been etched on one side with sodium ammonia (D/W 216), after which a primer has been applied to enhance bonding to elastomers and pressure sensitive adhesives. This surface treatment allows PTFE, which normally exhibits very poor adhesion, to be bonded to other materials. In some applications, sodium ammonia etched materials exhibit somewhat higher strengths than those etched with sodium naphthalene (D/W 212).

Applications for sodium etched PTFE include bonding to elastomers to produce laminated diaphragms, as well as the application of pressure sensitive adhesives in the production of PTFE pressure sensitive tapes. In all of the above applications, the lamination or adhesive application is usually accomplished with a primer that is specific to the material being applied.

General Information
Features	Good Adhesion Good Strength
Uses	Adhesives Diaphragms Film Tape
Appearance	Black Natural Color Red White
Forms	Film

Physical	Nominal Value	Unit
Thickness	50.8 to 1020	nm

Additional Information	Nominal Value	Unit
Core ID	7.62	cm
Maximum Roll OD	356	mm
Width	6.35 to 965	mm

Films	Nominal Value	Unit	Test Method
Tensile Strength - MD (Yield)	27.6	MPa	ASTM D882
Tensile Elongation - MD (Break)	300	%	ASTM D882

Thermal	Nominal Value	Unit
Continuous Use Temperature	260	°C

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