Adhesive

Chloroprene-rubber base flame retardant adhesives

For fixing electronic devices, with outstanding electrical properties

  • Product name
    SC121
  • Features
    • High bonding strength ensuring tight fixing.
    • Highly viscous and thixotropic, permitting application to a vertical surface.

Product Lineup

Specifications

Product Name SC121
Main component Chloroprene rubber base
Solvent Hexane, Toluene, MEK
Color Yellowish white
Viscosity (Pa・s) 15 to 22
Solid content (wt%) 41 to 45
Specific gravity About 0.98
Diluent Toluene, MEK
Container 180ml Tube/1ℓ can or 15kg can
Warranty period from manufacturing date 12 months
  • *UL Certificated. File No. E63260 UL94 V-0 (t = 1.6mm)
  • Not for use in current-carrying parts

•Bonding and fixing of components in non-conductive positions
•For bonding of materials soluble in toluene, MEK (such as polycarbonate, Noryl, ABS or acrylics), please contact us beforehand.

* Please be sure to avoid any use of these materials in electronic components that are to be energized electrically to prevent tracking or similar problems.
We recommend applying our polyester resin-based self-extinguishing adhesives SC608Z2 series.
[Precautions on the use of chloroprene rubber-based adhesives]

1.Bonding strength under different atmospheres

Test Piece Condition

Substrate:Steel/Canvas
Sample width:25mm
Peeling speed:50mm/min
Cleaning solvent:Toluene
Coating thickness:
Steel Apply a first coat of 150μm. After drying at 30°C for 10 min, apply a second coat of 200μm.
Canvas Apply a first coat of 150μm and dry at 30°C for 10 min.
Apply a second coat at 150μm and dry at 30°C for 10 min.
After dried apply a third coat at 250μm.

[After final coat, hold the open time for 5 min and pressed the adherent with rubber roller at room temperature. After drying at 60°C for one hour, allow it to stand at room temperature. ]

Results

(N/cm2)

180° peeling strength Product name Measuring temperature
-20℃ 0℃ 20℃ 40℃ 60℃ 80℃ 100℃ 120℃
SC121 39.2 54.9 65.7 72.5 66.6 53.9 21.6 14.7
sc_121_chart_03.gif

2.Bonding strength on various type of substrate (Shear strength)

Test Piece Condition

Coating thickness:300µm (wet)
Bonding condition:0.5MPa x 3 min
Measuring condition:20°C 60%RH
Peeling speed:10mm/min
Open time:3 min

[Initial value :Left at 60°C for one hour before measurement]

Results

(N/cm2)

Shear strength Substrate Product name
SC121
Initial After aging Aging condition
Styrol/Styrol 246 247 60°C
100 hours
ABS/ABS 219 329
Acrylic/Acrylic 246 286
PVC/PVC(rigid) 241 290
Paper phenol/Paper phenol 343 364 100°C
100 hours
Glass-epoxy/Glass-epoxy 270 375
Copper/Copper 266 319
Iron/Iron 221 466
Aluminum/Aluminum 199 366
Glass-epoxy/Glass-epoxy 270 392AF 100°C
500 hours
Copper/Copper 266 270
Glass-epoxy/Glass-epoxy 270 368 40°C 90%RH
500 hours
Copper/Copper 266 368

3.Bonding strength (Shear strength)

Test Piece condition

Substrate:Glass-epoxy/Glass-epoxy
Coating thickness:300μm (wet)
Bonding condition:0.5MPa x 3 min
Measuring condition:20°C 60%RH
Peeling speed:10mm/min
Open time:3 min

Results

(N/cm2)

Shear strength Product name Aging time (days)
Initial 3 hours 1 day 3 days 7 days 10 days 15 days
SC121 10 to 15 139 191 243 270 293 277

4.Residual solvent in the adhesive and drying time after application

Test Piece condition

Substrate:Glass-epoxy plate
Measuring condition:20°C 60%RH
Coating thickness:300μm (wet)

Results
sc_121_chart_01.gif

5.Expansion ratio & inflection point

Test Piece condition

[The coefficient of thermal expansion was measured applying the compressive load method using a thermomechanical analyzer (TMA) manufactured by Rigaku Corporation.]
Results
Product name Expansion ratio α Inflection point °C
SC121 7.97 x 10-5/°C(20 to 112°C)
1.43 x 10-4/°C(112 to 150°C)
112

Notes

Please read notes indicated on the relevant safety data sheet(SDS) for precautions required for operation.

caution

Note on the characteristic data given - Data on the characteristics of the products described in this page based on the results of evaluations carried out by the company. This does not guarantee that the characteristics of the product conform with your usage environment. Before use, review the usage conditions based on evaluation data obtained from the equipment and substrates actually used.

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