| abstract |
The invention discloses a high-temperature cross-linked anti-dropping flame retardant having a Schiff base and a phosphorous (phosphono)acyl structure, which contains the following repeating structural units: The flame retardant is prepared by melt reaction or solution reaction of monomer I with Schiff base structure and monomer II with phosphorus (phosphono)acyl structure under the protection of nitrogen. Since the flame retardant disclosed in the present invention simultaneously introduces the Schiff base high-temperature chemical crosslinking structure and the phosphorus (phosphonium) acyl high-efficiency flame-retardant group, it can not only produce a synergistic flame-retardant effect of phosphorus and nitrogen, but also enable the polymer to obtain excellent flame-retardant And anti-droplet effect, and can also significantly reduce the material heat release rate and total heat release, can be used for flame retardant of unsaturated polyester resin, epoxy resin, polyester, polyolefin and other materials. The preparation method provided by the invention is simple, easy to control and suitable for industrial production. |