Low-harmful smoke emission rubber powder modified asphalt and preparation method thereof
By loading chemically modified DOPO onto a porous carrier, a composite modified system of confined storage, slow release, and synergistic reaction was constructed, which solved the problem of large emissions of harmful fumes during high-temperature construction of rubber-modified asphalt, and achieved continuous suppression of harmful fumes and synergistic improvement of performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANXI CONSTR ENG GROUP CORP
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing rubber-modified asphalt emits large amounts of harmful fumes and has insufficient anti-aging properties during high-temperature construction. Furthermore, existing technologies have failed to establish an effective slow-release regulation mechanism, making it difficult to achieve a continuous and stable inhibition effect.
By chemically modifying DOPO and loading it into a porous support, a composite modified system of confined storage, sustained release, and synergistic reaction is constructed. The pore structure of the porous support and the modification of long-chain alkyl groups reduce the reactivity of DOPO, thereby achieving a sustained release effect.
It significantly reduces the emission concentrations of H2S and VOCs, while improving the high-temperature stability and anti-aging properties of asphalt, achieving continuous suppression of harmful fumes and synergistic optimization of performance.
Smart Images
Figure CN122405014A_ABST