Battery Thermal Management System Compressive Pad Close Cell Foam Insulation Expanded Polystyrene Foam
Expanded Polypropylene (EPP) is a highly versatile closed-cell bead foam that provides a unique range of properties, including outstanding energy absorption, multiple impact resistance, thermal insulation, buoyancy, water and chemical resistance, exceptionally high strength-to-weight ratio and 100% recyclability. EPP can be made in a wide range of densities, from 15 to 200 grams per litre, which are transformed by moulding into 18 to 260 grams per litre. The steam chest moulding process fuses individual beads into the final product form, resulting in a strong and lightweight shape.
EPP is a fantastic material used for purposes which require elasticity in repetitive static and dynamic loads. It's a properly foamed polypropylene in the form of closed grains filled with air, which create closed cellar structures. It is the structure that polypropylene foam owes its properties.
Low weight, high energy absorption, well chemical resistance and great susceptibility to thermoforming, to name a few. Furthermore, it has shape memory - that is the ability to return to the previous shape after being exposed to a load.
Features
- Light-weight, waterproof, Antiflaming and self-extinguishing, etc
- Sound insulation, heat insulation, noise absorption, heat preservation and anti-corrosion
- Tough, rigid with a high impact strength, not easy to age and can keep its colour for long time
- Easy to clean and maintain
- Environmental-friendly green healthy materials
The main performance parameters are shown in Table
| Physical Properties |
| ITEMS | TEST METHOD | UNITS | TESTED DENSITIES |
| g/l |
| EPP density range, | | | 20 g/l ~ 200 g/l |
| Tensile strength | ISO 1798 DIN 53571 | kPa | (kPa) 270 to 1930 |
| Tensile elongation (%) | ISO 1798 DIN 53571 | % | 21 to 7.5 |
| Compressive strength (kPa) | ISO 844 | kPa | |
| 25% strain | DIN 53421 | | 80 to 700 |
| 50% strain | Test speed | | 150 to 960 |
| 75% strain | 5 mm/min | | 350 to 2300 |
Compression set (%)
25% strain, | ISO 1856 C Stabilizing 24H | % | 22H, 23°C 13.5 to 10.5 |
| Burning rate (mm/min) | FMVSS 302
ISO 3795
sample thickness
12.5 mm | mm/min | 100 to 12 |
EPP is widely utilised by automotive manufacturers because of its performance benefits for energy management, lightweight, enhanced functionality, durability and recyclability. Applications include seating, bumpers, stowage systems, door panels, pillars, floor levelers, parcel shelves, headrests, tool kits, sun visors and myriad filler parts.
Reusable industrial packaging, known as dunnage, is frequently made from EPP due to its durability and its inherent ability to absorb energy in transit. EPP is used increasingly in furniture, toys such as model aircraft and other consumer products due to its versatility as a structural material and its lightweight, as well as other performance characteristics. appro colour range
EPP is approved for use in conjunction with food products. Its thermal insulation properties and structural strength make it appropriate for containers such as food delivery containers and beverage coolers and the like. EPP does not support microbial growth and can be made sterile with steam cleaning.
