A trifluorochloroethylene-based fluorocopolymer, a method for preparing the same, and an application thereof
By designing a fluorinated copolymer of trifluorochlorovinyl trifluoroethylene, the formation of homopolymer segments of CTFE is restricted and crystallization is inhibited, thereby enhancing adhesion and mechanical strength. This solves the problem of insufficient bonding strength of traditional hot melt adhesives at low temperatures and enables the application of high-strength and high-toughness adhesives in a wide temperature range.
Patent Information
- Application Number
- CN202610807333.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-06-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing hot melt adhesives exhibit high cross-linking density and low surface energy at low temperatures, making it difficult to bond between the substrate surface and the adhesive. This results in poor interfacial wetting, the formation of thick adhesive layers, and the generation of undesirable residual stress. Traditional polymer molecules are prone to freezing at low temperatures, leading to increased brittleness, weakened mechanical force transmission between substrates, and decreased resistance to crack propagation. Furthermore, their long-term low-temperature stability is insufficient, failing to meet the needs of special scenarios such as Arctic/Antarctic expeditions or outer space exploration.
A fluorinated copolymer with alternating sequences of fluorinated and non-fluorinated segments is designed by uniformly inserting chlorotrifluoroethylene into non-fluorinated monomers to restrict the formation of homopolymer segments of CTFE, inhibit crystallization, and provide toughness and adhesion through two non-fluorinated monomers, thereby enhancing adhesion and mechanical strength.
It achieves ultra-high bonding strength in a temperature range of -196 to 80 °C, overcoming the problems of volume shrinkage and increased brittleness caused by molecular freezing at low temperatures in traditional polymer adhesives. It has excellent adhesion and mechanical strength and is suitable for wide temperature range environments.
Smart Images
Figure CN122404609A_ABST