Coarse denier surface layer microporous hollow bicomponent fiber and preparation method thereof

The invention discloses a coarse denier surface layer microporous hollow bicomponent fiber and a preparation method thereof. The coarse denier surface layer microporous hollow bicomponent fiber comprises an inner layer and an outer layer, the prepared coarse denier surface layer microporous hollow bicomponent fiber overcomes the problem that conventional polyester is poor in hygroscopicity, in addition, the problem that a conventional polyester fabric is poor in adsorbability to functional auxiliaries, so that the fabric is poor in washability after functional finishing is solved, and meanwhile, the coarse denier surface layer microporous hollow bicomponent fiber has the light and warm keeping performance and is suitable for being used in the field of textile fabrics. Under the combined action of the ultra-high molecular weight polyethylene powder, the linear high-density polyethylene and the linear low-density polyethylene, the fabric has excellent mechanical properties such as breaking strength and good wea