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SUMI-EPOXY ELM is special polyfunctional epoxy resins characterized by excellent heat resistance.
They deliver high performance as matrix resins for sealing materials of electric and electronic parts,heat-resistant paints and carbon fiber composites (CFRP).
The SUMI-EPOXY ELM-434 Series comprises four-functional amine epoxy resins, namely, tetraglycidyl diaminodiphenylmethane (TGDDM) epoxy they have been successfully used for CFRPs for primary aircraft structures.resins.
They are mainly used for CFRPs, heat-resistant paints, heat-resistant adhesives. As an example,This series comes in three grades, ELM-434, ELM-434L and ELM-434VL, which have different viscosity.
Chemical Structure
Main features
- Excellent heat resistance
- Excellent mechanical properties
- Excellent low shrink properties
- Excellent chemical resistance
Physical Properties *
| Item/Grade | ELM-434VL | ELM-434L | ELM-434 |
|---|---|---|---|
| Epoxy equivalent (g/eq) | 115 | 118 | 119 |
| Hydrolysable chlorine (%) | 0.01 | 0.01 | 0.02 |
| Gardner color scale | 3 | 4 | 7 |
| Volatile component (%) | 0.07 | 0.18 | 0.03 |
| Moisture (%) | 0.01 | 0.01 | 0.01 |
| Viscosity (mPa/s) 50℃ * | 5,000 | 8,200 | 11,900 |
* These physical properties were measured by using SUMITOMO CHEMICAL's analytical methods.
* The viscosity was measured by using a Brookfield viscometer.
Cured physical properties of ELM-434
* Composition : Epoxy Compound/4.4'-DDS=100/40phr
| Item | ELM-434 |
|---|---|
| Tg (℃) | 230 |
| Bending strength (MPa) | 160 |
| Flexural modulus (GPa) | 3.5 |
| 5% weight loss temperature (Air) (℃) | 370 |
| Linear expansion coefficient (TMA) (ppm/℃) 2nd Run : 50-100℃ | 55 |
| Linear expansion coefficient (TMA) (ppm/℃) 2nd Run : 100-150℃ | 63 |
All the data given above are for reference only and are not intended as guarantees of product performance.
All the data given above are based on materials, information and datacurrently available and are subject to change in accordance with new findings.
The SUMI-EPOXY ELM-100 Series comprises three-functional amine epoxy resins.
They are used for heat-resistant adhesives and heat-resistant paints for copper-clad laminates for printed-wiring boards.
The ELM-100 Series comes in two grades, ELM-100 and low-viscosity ELM-100H.
Chemical Structure
Physical Properties *
| Item | ELM-100H | ELM-100 |
|---|---|---|
| Epoxy equivalent (g/eq) | 104 | 107 |
| Total chlorine (ppm) | 1,400 | 3,600 |
| Non-volatile content (%) | 100 | 99.6 |
| Viscosity (mPa/s) 25℃ | 600 | 1,100 |
* These physical properties were measured by using SUMITOMO CHEMICAL's analytical methods.
* The viscosity was measured by using a Brookfield viscometer.
Cured physical properties of ELM-100
* Composition : Epoxy Compound/4.4'-DDS=100/40phr
| Item | ELM-100 |
|---|---|
| Tg (℃) | 260 |
| Bending strength (MPa) | 160 |
| Flexural modulus (GPa) | 3.5 |
| 5% weight loss temperature (Air) (℃) | 355 |
| Linear expansion coefficient (TMA) (ppm/℃) 2nd Run : 50-100℃ | 60 |
| Linear expansion coefficient (TMA) (ppm/℃) 2nd Run : 100-150℃ | 68 |
All the data given above are for reference only and are not intended as guarantees of product performance.
All the data given above are based on materials, information and datacurrently available and are subject to change in accordance with new findings.
