3 results about "Soft segment" patented technology

The invention belongs to the technical field of polymer materials, and particularly relates to application of a porous polymer film with regular pores to preparation of an artificial periosteum. The shape memory polyurethane provided by the invention is formed by polymerizing diisocyanate and a soft segment polymer, the soft segment polymer is polylactic acid, polyglycolic acid, polycaprolactone, polypolyol or a copolymer of at least two of the polylactic acid, the polyglycolic acid, the polycaprolactone and the polypolyol. The shape memory polyurethane material is combined with a water drop template method to form a porous polymer film containing a crystal structure. The porous film material has excellent mechanical properties, can meet performance requirements of application scenes such as artificial periosteum and the like, and has a good application prospect.

The invention discloses a polyether-organic silicon composite nylon elastomer and a preparation method thereof, and the polyether-organic silicon composite nylon elastomer is prepared by introducing a polyether product and an organic silicon polymer into a nylon synthesis reaction process. The novel nylon elastomer is prepared by taking organic silicon as a soft segment, and compared with a traditional elastomer taking polyether as a soft segment, the novel nylon elastomer prepared by the invention has excellent performances of better flexibility and higher elongation at break.