Application Type Bond, EMI shield 1 Part or 2 Part 1-Part Material Form Transfer tape Substrate Fabric, Foam, Metal, Stainless Steel Industry Electronic and electrical devices, EMI gasket attachment to electrical devices, Conductive fabric/foam core EMI gaskets to electronic cabinetry., Foil laminate shields to provide a customized shielding solution, EMI gasket attachment attachment to electronic devices Manufacturer 3M Chemistry Acrylic Cure Method Pressure Sensitive, Heat High Temperature Resistance (°C) 70, 121 Key Specifications Complies with the requirements of EU Directive 2002/95/EC; Complies with the requirements of EU Directive 2005/618/EC
Technical Data for 3M 9725
- EMI Shielding - EMI shield
- Adhesive - Bond
1 Part or 2 Part
- Tape - Transfer tape
- Electronics - EMI gasket attachment to electrical devices, Electronic and electrical devices, Foil laminate shields to provide a customized shielding solution, Conductive fabric/foam core EMI gaskets to electronic cabinetry., EMI gasket attachment attachment to electronic devices
- Pressure Sensitive (min) - Pressure Sensitive
- RoHS (Restriction of Hazardous Substances) - Complies with the requirements of EU Directive 2002/95/EC; Complies with the requirements of EU Directive 2005/618/EC
Peel Strength (piw) 46 (Oz/in), 51 (Oz/in), 59 (Oz/in) Test Method
High Temperature Resistance (°C) 70, 121
Electrical Conductivity (mhos/cm) Very good, < 0.02?/ inch (2) Test Method
Shelf Life Details 24 months from date of manufacture when stored in original cartons at 70°C (21°C) and 50% relative humidity. Shelf Life Temperature (°F) 158 Shelf Life Type From date of manufacture Shelf Life (mon) 24
Not Good For
Don't Use For Uncertain high or low temperature excursions where the electrical performance might be compromised, even if holding power is not affected.
Best Practices for 3M 9725
To obtain optimum adhesion, the bonding surfaces must be clean, dry and well unified. Some typical surface cleaning solvents are isopropyl alcohol or heptane.
Note: Carefully read and follow the manufacturer’s precautions and directions for use when working with solvents.
Bond strength is dependent upon the amount of adhesive-to-surface contact developed. Firm application pressure helps develop better adhesive contact and improves bond strength as well as electrical conductivity. Pressure must be applied to the bond line after assembly to wet the substrates with 3M™ Electrically Conductive Adhesive Transfer Tape 9725 and to engage the conductive nonwoven with the substrates to make electrical connection. Mechanical pressure (roller, metal bar) or finger pressure at 15 psi (0.10 Mpa) or greater is suggested. Heat may be applied simultaneously to improve wetting and final bond strength as well as electrical conductivity.
Tape application below 50°F (10°C) is not recommended because the adhesive will be too firm to wet the substrates, resulting in low adhesion and poor electrical conductivity. Once properly applied, low temperature holding power is generally satisfactory.
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Peel Strength Test Methods
|Peel Strength||Type||Substrate||Test Time||Test Temperature||Test Method|
|46 (Oz/in)||180° Peel Strength||Stainless steel||20 min||25°C||180 degree peel strength to stainless steel (Modified ASTM D3330 Oz/in (N/100 mm) 180 degree, 2 mil PET as backing)|
|51 (Oz/in)||180° Peel Strength||Stainless steel||1,440 min||25°C||180 degree peel strength to stainless steel (Modified ASTM D3330 Oz/in (N/100 mm) 180 degree, 2 mil PET as backing)|
|59 (Oz/in)||180° Peel Strength||Stainless steel||4,320 min||25°C||180 degree peel strength to stainless steel (Modified ASTM D3330 Oz/in (N/100 mm) 180 degree, 2 mil PET as backing)|
Electrical Conductivity Test Methods
|Electrical Conductivity||Test Method|
|< 0.02?/ inch (2)||3M internal test method: Based upon general resistance measurements made with crossed pieces of foil/tape/foil construction using a 1.0 in. _x00D_ x 1.0 in. square piece of 3M ECATT 9725.|