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发明授权
CN106222780B 一种石墨烯/UHMWPE复合纤维及其制备方法和应用 有权 转让

一种石墨烯/UHMWPE复合纤维及其制备方法和应用
摘要：
本发明公开了一种石墨烯/UHMWPE复合纤维及其制备方法，其中的石墨烯含量占UHMWPE含量的0.05‑5wt％。其制备方法为：将石墨烯预先分散到溶剂中，形成均匀的石墨烯分散液，然后将UHMWPE粉在加热条件下充分溶解于溶剂中，再与上述方法得到的石墨烯分散液充分混合，充分混合后的UHMWPE/石墨烯混合溶液采用冻胶纺丝法进行纺丝，再经过溶剂萃取、牵伸，得到石墨烯/UHMWPE复合纤维。本发明制备的石墨烯/UHMWPE复合纤维力学强度提升明显，拉伸强度可达29cN/dtex，拉伸模量可达1300cN/dtex。通过改变石墨烯与UHMWPE粉的添加比例、石墨烯的尺寸及不同的分散工艺可以对石墨烯/UHMWPE复合纤维的力学性能进行调控。
摘要（英）：

The invention discloses a graphene/UHMWPE composite fiber and a preparation method thereof. In the composite fiber, the content of graphene is 0.05-5 wt% of that of UHMWPE. The preparation method comprises: pre-dispersing graphene in a solvent to form a uniform graphene dispersion liquid, fully dissolving UHMWPE powder in a solvent in a heating condition, fully mixing the obtained solution with the obtained graphene dispersion liquid, spinning the fully-mixed UHMWPE/graphene mixed solution through a gel-spinning method, and performing solvent extraction and drawing to obtain the graphene/UHMWPE composite fiber. The prepared graphene/UHMWPE composite fiber is obviously improved in the mechanical strength. The tensile strength can reach 29 cN/dtex, and the tensile modulus can reach 1300 cN/dtex. Through changing the addition ratio of graphene and UHMWPE powder, the size of graphene and different dispersion processes, the mechanical property of the composite fiber can be regulated.

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