一种使用过热蒸汽制备高模量对位芳纶的方法
By using superheated steam for two-stage heat treatment, the problems of complex, costly, and high-safety-risk preparation of high-modulus para-aramid fibers in existing technologies have been solved, achieving efficient, low-cost, and environmentally friendly production of high-modulus para-aramid fibers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGHUA UNIV
- Filing Date
- 2024-10-08
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for preparing high-modulus para-aramid fibers suffer from problems such as complex processes, high costs, significant safety risks, and difficulties in wastewater treatment, making it difficult to achieve efficient and low-cost high-modulus production.
Two-stage heat treatment using superheated steam is employed. The high enthalpy and high permeability of superheated steam rapidly evaporate the moisture in the fiber. The two-stage heat treatment improves the crystallinity of the fiber and the strength of hydrogen bonds between molecular chains, while reducing heat treatment time and equipment requirements.
This method enables the efficient preparation of high-modulus para-aramid fibers, increasing tensile modulus by 10–20.5%, reducing production costs and energy consumption, conforming to green production principles, and reducing environmental pollution.