for a better
world
economy
solutions for Plastic and Rubber
economy
solutions for Plastic and Rubber
for a better
world
economy
solutions for Plastic and Rubber
for a better
world
RUBBER IS NOT AN ENEMY.
IT JUST NEEDS TO BE UNDERSTOOD AND TREATED IN A PROPER WAY.
HAVE A LOOK TO OUR SOLUTIONS FOR RUBBER RECYCLING.
Thermo-mechanical rubber devulcanization
The theory of devulcanization
The devulcanization is the process by which, by breaking the crosslinks between chains (sulfur or peroxide), a vulcanized rubber is re-transformed into a new plastomeric material, thus making it re-processable and recyclable.
Plastomer
Entanglement
(Physical interaction)
Elastomer
Crosslink
(Chemical Bond)
Maris thermo-mechanical process is a 100% green approach that does not involve the use of chemicals. This particular process is made possible thanks to the different chemical-physical characteristics of the CC, CS and SS bonds, specifically: a marked difference in terms of elastic bonding constant (kcc≈100> kcs> kss≈3) and an energy of different bond (370, 310 and 270 kJ / mol respectively).
Application range
Thanks to Maris devulcanization process, the following materials can be recycled:
- ELTs – End of Life Tires
- Car tires
- Truck tires
- Off road tires
- ACM – Polyacrilic Rubber
- BR – Butadiene Rubber
- EPDM – Ethylene Propylene Diene Monomer
- FKM – Fluorelastomers
- IIR – Butyl Rubber
- IR – Isoprenic Rubber
- NR – Natural Rubber
- Q – Silicone Rubber
- SBR – Styrene Butadiene Rubber
| MATERIAL | RUBBER |
|---|---|
| Polymer | Vulcanized rubber |
| Origin | Post-consumer or post-industrial |
| Final use | Same use or different uses |
| EXTRUSION LAYOUT | |
|---|---|
| L/D | 64-72 |
| Degassing points | 1 |
| RECIPE | |
|---|---|
| Grinded rubber | 100% |
From chemical and rheological analysis carried out on devulcanized materials, it is found that the devulcanization yield can reach 60-80%.
The devulcanized material can be reused in the same original application, from 15 to 50% mixed with the virgin rubber while maintaining the desired mechanical properties. For different final applications it is possible to use devulcanized rubber in a blend with percentages higher than 50%.
| C-TSE size (mm) | 20 | 30 | 40 | 50 | 58 | 70 | 80 | 92 | 112 | 133 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OUTPUT* (kg/h) | 5 10 | 20 30 | 50 80 | 80 100 | 100 150 | 150 250 | 250 400 | 400 500 | 550 700 | 800 1000 |