Research progress in preparation technologies and properties and applications of polyoxymethylene fibers
The research progress in the preparation technologies,structural regulation and application of polyoxymethylene(POM)fibers was reviewed.The preparation technologies of POM fibers mainly include electrospinning process,gel spinning process and melt spinning process.Electrospinning process can be used to prepare nanofibers,but with relatively low efficiency.Melt spinning process has simple process and low cost,but it is difficult to produce high-strength fibers due to easy decomposition and high crystallinity of POM.Gel spinning process can achieve high crystallinity and degree of orientation through multi-stage hot stretching.In terms of structural regulation,the crystallinity of POM can be reduced by controlling the regularity of molecular chains,adding crystallization inhibitors or using different cooling methods,thereby improving the tensile orientation and strength of fibers.POM fibers have a wide applications in the fields of infrastructure,industry and civil,such as reinforcing concrete,ropes,filters and high-end protective materials.The research focus of POM fibers should be focused on developing adaptable melt spinning technology and suitable solvents,optimizing technological process,reducing production costs,expanding the application scope of raw material applications and developing recycling technologies in the future.
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