A dry fiber automated placement material, and a preparation method and application thereof
By performing two emulsion/suspension treatments and hot-pressing composites on the fibers, the problem of insufficient cohesion in dry fiber autolay materials is solved, enabling low-cost manufacturing of high-performance composite materials suitable for the aerospace field.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AVIC BEIJING AERONAUTICAL MFG TECH RES INST
- Filing Date
- 2023-12-26
- Publication Date
- 2026-07-10
AI Technical Summary
Existing automated liquid molding processes have poor cohesion of dry fibers, making them prone to delamination. This leads to splitting and fuzzing during slitting, and the resulting width after slitting is too large, affecting the automated layup process and making it difficult to control the thickness and resin content of the composite material.
The fibers are treated twice using an emulsion/suspension method. The first treatment allows the resin components to penetrate into the fiber bundle, while the second treatment leaves the resin components on the outer surface of the fiber bundle. The mesh and fibers are then combined using hot rollers and heating plates. Temperature and roller gaps are controlled to improve the cohesion and binding force of the fibers. Finally, the fibers are slit into dry fiber strips or bundles of a specific width.
It improves the cohesion and integrity of dry fibers, solves problems in the slitting process, achieves stable control of the thickness and resin content of composite materials, is suitable for automated layup processes, and reduces the manufacturing cost of composite materials.
Smart Images
Figure CN117621486B_ABST