Ultra-high molecular weight polyethylene fiber surface continuous ultraviolet grafting treatment system

Abstract

The invention relates to an ultra-high molecular weight polyethylene fiber surface continuous ultraviolet grafting treatment system that comprises an ultraviolet irradiation unit and a matching unit,wherein the ultraviolet irradiation unit consists of an ultraviolet control box and a quartz reactor positioned in the ultraviolet control box; the quartz reactor is provided with a fiber inlet and afiber outlet, a plurality of quartz rotating shafts for guiding fiber transmission are arranged in the quartz reactor, and an ultraviolet lamp for irradiating the quartz reactor and a transmission shaft for guiding fiber transmission are arranged in the ultraviolet control box; the matching unit is provided with a solution tank and a fiber winding and unwinding mechanism which are arranged outsidethe ultraviolet irradiation unit, and the fiber winding and unwinding mechanism is used for driving fibers to sequentially pass through the solution tank and the ultraviolet irradiation unit. Compared with the prior art, the invention has the advantages of simplicity, convenience, high efficiency, few side reactions, low cost and continuous and controllable process.

Description

technical field [0001] The invention relates to the field of fiber surface treatment, in particular to an ultra-high molecular weight polyethylene fiber surface continuous ultraviolet grafting treatment system. Background technique [0002] Ultra-high molecular weight polyethylene fiber (UHMWPE), also known as extended chain polyethylene fiber, is the third generation of high-performance fiber after carbon fiber and Kevlar fiber, with high orientation (>95%), high crystallinity (> 99%) and highly symmetrical methylene structure, this high degree of orientation, high crystallinity and highly symmetrical methylene structure ensures the excellent performance of UHMWPE fibers, but simple methylene forms an inert chemical The surface, the surface chemical reactivity is extremely low, it is difficult to form a chemical bond with the resin, in addition, the smooth surface formed by high-stretching is not easy to be infiltrated by the resin matrix, and the hydrophilicity is po...

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Problems solved by technology

[0006] Liang Guozheng et al. [Applied Surface Science, 2006, 253(2): 668-673] of Northwestern Polytechnical University in China found that the monofilament of UHMWPE fiber after grafting was pulled out through liquid-phase UV irradiation grafting of acrylamide (AM). The strength and interlayer shear strength of the interface are greatly improved, reaching 16.9MPa for epoxy resin ILLS, and 19.4MPa for special vinyl resin, but the reaction time of this method is longer

[0007] Chinese patent CN1035308A discloses a method for improving the surface bonding properties of UHMWPE fibers, which uses plasma to treat the surface of ultra-high molecular weight polyethylene fibers, and the wettability and surface bonding properties of the modified fibers to common substrates Both are greatly strengthened, but the cost of this method is high, and it is not easy to realize continuous production, and improper operation may easily cause the decline of fiber mechanical properties

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