Epoxy Resin AdhesiveEpoxy/silyl terminated polyether elastic adhesive

Features

  • This two-part reactive mixture—an epoxy/silyl terminated polyether elastic adhesive—offers a flexible and resilient property that, in clear contrast to the hard and brittle characteristic of conventional epoxy resin adhesives, achieves a major transformation into an adhesive that will not peel off.
  • For bonding that requires a high peel resistance and a high shear adhesive strength.
  • For bonding in vibrating locations.
  • For bonding in an environment subject to large stress variations.
  • For bonding different types of materials with substantially different linear expansion coefficients.
  • For bonding various types of engineering plastics.

Application

Applications that require elastic adhesion
1. Bonding of different types of materials with substantially different linear expansion coefficients.
2. Bonding in vibrating locations and in environments subject to large stress variations.
3. Bonding in locations with a large internal strain caused by environmental changes such as thermal cycles.

Applications that require a high peel resistance and a high shear adhesive strength
Bonding of engineering plastics including commodity plastics
1. Casting and bonding of electrical and electronic parts.
2. Bonding of glass used in precision equipment and optical equipment.
3. Bonding of building components.
4. Bonding of craft products.

Product data

Adhesive properties for various types of adherends

(MPa)
Tensile shear strength Failure Modes
Plastic PVC 5.51 CF
PC 5.46 CF
ABS 5.38 CF
PMMA 3.72 CF2AF8
6Ny 4.07 CF8AF2
PET 4.88 MF
PBT 3.44 AF
PPO 4.16 CF5AF5
PPS 4.19 CF5AF5
Metal SPCC 6.15 CF
AL 7.57 CF7AF3
SUS 5.90 CF8AF2

*CF:Cohesion Failure, AF:Adhesive Failure, TCF:Thin layer cohesion failure, MF:Failure Modes
The numbers indicate their proportion to the adhesion area.

Test method : JIS K6850
Curing: 23°C50%RH×7 days

Characteristics by mixing ratio

Mixing ratio
(Base resin : Hardener)
Tensile shear strength Peeling strength Hardness
(Shore A)
Adhesion strength Failure Modes Adhesion strength Failure Modes
60 : 40 6.04 MPa CF 2.90 N/mm CF 75
55 : 45 6.15 MPa CF 3.14 N/mm CF 72
50 : 50 6.15 MPa CF 3.85 N/mm CF 72
45 : 55 7.10 MPa CF 4.12 N/mm CF 71
40 : 60 6.09 MPa CF 3.90 N/mm CF 69

*CF:Cohesion Failure
Test method: JIS K6850

Adherends: Steel plate
Surface treatment: Degreased with MEK
Curing: 23°C50%RH×7 days

Heat aging test

s_t_EP001K_netsurouka.jpg

(MPa)
Test conditions
(temperature×time)
Tensile shear strength
Initial value 6.15 CF
100°C 500h 7.56 CF
1000h 7.53 CF
120°C 100h 6.11 CF
250h 5.38 CF
500h 4.61 CF
1000h 2.59 CF
150°C 100h 6.15 CF
250h 3.10 CF
500h 3.08 CF
1000h 2.68 CF
180°C 100h 2.10 CF
250h 1.20 AF

*CF:Cohesion Failure,AF:Adhesive Failure
Test method : JIS K6850

Adherends: Steel plate
Surface treatment: Degreased with MEK
Tension speed: 50 mm/min

Tensile shear strength on each temp

s_t_EP001K_nekkan.jpg

(MPa)
Adhesion strength Failure Modes
-40°C 8.96 CF
23°C 6.15 CF
50°C 5.95 CF
80°C 6.27 CF
100°C 6.13 CF
120°C 2.83 CF3AF7
150°C 2.64 CF2AF8

*CF:Cohesion Failure

Test method : JIS K6850
Adherends: Steel plate
Surface treatment: Degreased with MEK
Tension speed: 50 mm/min

High-temperature and high-humidity test

s_t_EP001K_koonkoshituyosikawa.jpg

(MPa)
Adhesion strength Failure Modes
Initial value 7.57 CF
85°C85% 100h 8.96 CF
250h 7.83 CF
500h 7.14 CF
1000h 6.81 CF

*CF:Cohesion Failure

Test method : JIS K6850
Adherends: Aluminum

Property

EP001K
Base resin Hardener
Application / Properties / Features Elasticity
Type Two-part epoxy adhesive curing at room temperature
Base Epoxy resin Silyl terminated polyether
Appearance Milky white Light yellow
Non-volatiles wt% 99 97
Viscosity Pa・s/23°C 14 18
Density g/cm3 1.15 1.00
Standard curing conditions 23°C×7days
23°C 3days+50°C 3days
Mixing ratio 1 : 1
Pot life 23°C 11分
Set time 23°C 40 min.
Time required for effective curing 23°C 24 hours
Cured properties Hardness Shore A 72
Glass transition temperature °C -65
Elastic modulus MPa 3.2
Breaking strength MPa 6.7
Elongation at break % 200
Water absorption ratio % 1.8
Linear expansion coefficient 15×10-5
Capacity 320ml set
2kg set
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