Fiber spinning method and spun fibers and use thereof
AssigneesChina Petroleum & Chemical Corporation, Sinopec Nanjing Research Institute of Chemical Industry Co., Ltd.
InventorsFanmin KONG, Yunsheng ZHAO, Pinhua YU, Ye ZHANG, Li XU, Xiaolian WU, Hao SU
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Abstract
Spun fibers and the use thereof, and a fiber spinning method. The fiber spinning method comprises extruding and spinning a spinning solution, and then sequentially subjecting a fiber precursor obtained by spinning to cooling formation, drying and stretching, wherein the method for the cooling formation comprises bringing the fiber precursor into contact with a fluid at a temperature of no more than −10° C. Polyethylene spun fibers obtained by means of the fiber spinning method have a breaking strength of 40 CN/dtex or more and a modulus of 1400 CN/dtex or more.
Claims21
1-26- (canceled)
A spun fiber, said spun fiber being a crystalline polymer, wherein the spun fiber has an irregularity no more than 1.5%, and a crystallinity measured by Differential Scanning calorimetry within a range of 60-95%;
- the spun fiber has a grain size measured by X-ray Diffraction (XRD) along the normal direction of the crystal plane within a range of 7.4-9.6 nm;
- a grain size along the normal direction of the crystal plane within a range of 8.8-11.5 nm;
- and a grain size along the normal direction of the crystal plane within a range of 7.3-11 nm.
A fiber spinning method, comprises extruding and spinning a spinning solution, and sequentially subjecting fiber precursors obtained by spinning to cooling formation, drying and stretching, wherein the cooling formation are carried out so that the irregularity of nascent gel filaments obtained after the cooling formation is not more than 3%.
Dependencies are inferred from the claim text.