Toray MicroPly™ ES72A-2
- Chemical Family
- Epoxy & Epoxy Derivatives
Toray Toray MicroPly™ ES72A-2 is a 125°C (257°F) curing low-density, expanding, unsupported, epoxy syntactic core. ES72A-2 offers reduced processing, a one-shot cure, the ability to anchor inserts or fastenings, and increases the opportunity to consider lightweight, thin-walled composite sandwich structures. ES72A-2 can be easily contoured and shaped. Toray MicroPly™ ES72A-2 expands using a closed cell process ensuring complete homogeneous cell structure, the density/strength may be altered simply by changing cure pressure or limiting the volume available for expansion, the material is capable of expanding up to 650%. Toray MicroPly™ ES72A-2, formerly Amspand, is available in a variety of thicknesses down to 1 mm, and is supplied in sheets (625 mm x 400 mm).
Product families
Applications
- Consumer Goods — Sports & Recreation
- Chassis & Brake
- Exterior & Body
- Interior
- Powertrain & UTH
- Equipment & Parts
Product Families
- Foam Cores
Other characteristics
- Brand
- Toray MicroPly
- Core Type
- Thermoset Foam
- Functions
- Core Material
- Markets
- Automotive & Transportation
- Consumer Goods
- Industrial
- Core
- Thermoset Foam
- Appearance
- Charcoal Gray
- Product Type
- 125°C (257°F) Cure
- Expanding Syntactic Core
- Technology
- Composite Materials
- Composites End Use
- Motorsport
- Tanks
- Material Features
- High Strength to Weight Ratio
- Homogeneous Cell Structure
- Light Weight
- HIGHLIGHTS
Density/strength may be tailored by simply changing cure pressure or limiting volume available for expansion.; Capable of expanding up to 650%**; Forms a closed cell structure; Capable of generating internal pressure during cure; Compatible for co-cure with Toray's E720 and E722 prepreg; 30 days out life at ambient temperature ** Variations in heat-up rate, cure temperature, pressure and thickness are all factors that influence the expansion (e.g., at 1-mm thickness an expansion of 250% can be achieved. Increasing the thickness will increase the expansion).
- Recommended Applications
Sport & Recreation; Motorsport & Formula 1; Automotive; Industrial; Honeycomb edge filling and splicing; Honeycomb core stabilization; Use as a filling core in closed mold operations; Remove from cold storage and allow to reach room temperature before removing from polythene bag. Trim to required shape and remove release paper from one side. Place in position and remove remaining release paper.; Caution: ES72A-2 syntactic core contains a reactive resin system and care must be taken to avoid exothermic heating during the cure.
- Composite Materials Functions
- Core Material
- Composites Processing Methods
- Out of Autoclave Prepreg
- Product Safety and Shelf Life
This product may cause skin irritation. Avoid skin contact. If contact occurs, wash with soap and water at the first opportunity.; Out Life : 30 days at 20°C (68°F); Storage Life : 12 months at -18°C (0°F) when stored in polythene bags; Out life is the maximum time allowed at room temperature before cure.
Technical data
Table 1 of 2
2 rows| Characteristic | Value | Unit |
|---|---|---|
| Density | 0.10 to 0.40 | g/cm3 |
| Tg (by DSC) | 114 (237) | °C (°F) |
Table 2 of 2
7 rows| Characteristic | Value | Unit |
|---|---|---|
| Density | 0.9 | g/cm3 |
| Flexibility | Pliable at room temperature | — |
| Surface weight nom. for 1 mm thickness | 900 | g/m2 |
| Surface weight nom. for 1.5 mm thickness | 1350 | g/m2 |
| Surface weight nom. For 2 mm thickness | 1800 | g/m2 |
| Tack | Medium | — |
| Thickness mm ± 10% as standard | 1, 1.5, and 2 | mm (mm) |
