Method for modifying interface of carbon fiber reinforced thermoplastic resin matrix composite material
US12311579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2023 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Jan 24, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2307/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method with which mechanical properties of the interface of the fiber reinforced thermoplastic resin matrix composite material can be improved by conducting grafting on surfaces of materials. A carbon fiber (CF) and a polymethyl methacrylate resin (PMMA) are subjected to interface modification treatment to introduce active carboxyl groups to the surfaces of the materials. Then, hexamethylene diisocyanate (HDI) is used as a coupling layer for connecting the carboxyl groups on the surfaces of the carbon fiber and on the surfaces of the polymethyl methacrylate resin to form a “molecular bridge”. Accordingly, the interface binding force between the resin and the fiber is improved by chemical grafting. A modified carbon fiber reinforced polymethyl methacrylate composite material sample (CF/PMMA) is prepared by a thin film lamination method, and the composite material sample prepared is subjected to a microscopic verification testing of the validity of the method provided in the present disclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.