A formulation process for producing degradable eps
By introducing composite degradable masterbatch and compatibilizer into EPS material, combined with the permeation curing process, the rapid disintegration and partial biodegradation of EPS under composting conditions are achieved, solving the problem of traditional EPS being difficult to degrade, and achieving efficient, safe and environmentally friendly results.
Patent Information
- Application Number
- CN202610813078.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-08
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional EPS materials are difficult to degrade in the natural environment, leading to white pollution. Existing improved technologies have failed to achieve significant disintegration and partial biodegradation under industrial composting conditions.
The formulation uses expandable polystyrene beads with composite degradation masterbatch, compatibilizer and degradation accelerator. A gradient distribution is formed through the infiltration curing process to ensure that the material disintegrates rapidly under composting conditions. The synergistic effect of PCL, PLA and PBAT and the catalytic effect of metal ions are used to accelerate degradation.
Under industrial composting conditions, the biodegradation rate of EPS foam reaches over 25%, and the disintegration rate reaches 90% after 180 days. The molecular weight of residual polystyrene after degradation is significantly reduced, reducing the generation of microplastics, and the compost residue is safe for soil ecology.