Crystal form regulation and production process of high-temperature-resistant aramid pulp
By using a binary proton-competitive solvent system and high-speed shear forming technology, the problem of micropore defects caused by solvent layer retention was solved, and aramid pulp with high temperature resistance was prepared, achieving an improvement in high-order crystal structure and thermal stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 烟台泰和兴材料科技股份有限公司
- Filing Date
- 2026-05-19
- Publication Date
- 2026-06-16
AI Technical Summary
In the existing pure sulfuric acid spinning process for preparing high-temperature resistant aramid pulp, the solvent layer remains during the solidification stage, leading to micropores and amorphous defects, which affect the structural stability of the material at high temperatures.
A binary proton-competitive solvent system was used to prepare aramid pulp with a Form-II crystal structure by mixing concentrated sulfuric acid and polyphosphate to form a metastable solvent and combining it with high-speed shear forming.
It achieves a highly ordered crystal structure, avoids solvent retention, improves the thermal stability and specific surface area of the material at high temperatures, simplifies the process flow, and ensures consistent product quality.
Smart Images
Figure CN122215097A_ABST