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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

  

  (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

  

  (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

  

  (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 min.
  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