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| Preparation of spinning grade polyoxymethylene and its spinnability study |
| Su Keshun, Li Xiang, Li Hongjuan, Wang Yatao |
| Kailuan( Group ) Limited Liablity Corporation, Tangshan 063018, China |
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Abstract The effects of comonomer (DOL), catalyst (CA) addition, and product melt index (MFR) on the spinning performance of polyoxymethylene were systematically analyzes by studying the preparation and spinnability of spinning grade polyoxymethylene. The research results show that appropriately increasing DOL in polyoxymethylene, reducing CA content and increasing product MFR can help improve the spinning performance of polyoxymethylene, with DOL and CA addition ratios of 3%～6% and 2～3 ppm, the MFR is controlled within the range of 8.8～19.8 g/10 min, the spinning performance of polyoxymethylene is optimal, the tensile strength of polyoxymethylene fiber prepared can reach 6.6 g/d. By testing the melt index, crystallinity, spherical morphology and thermal stability of polyoxymethylene samples with different spinning properties, it was determined that the melt index, crystallinity and thermal stability of polyoxymethylene are the key technical indicators affecting its spinning performance, and the spherical morphology is a secondary technical indicator.
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| [ 1 ] 王亚涛. 聚甲醛的改性,加工及应用研究[ D ]. 北京：北京化
工大学，2017.
[ 2 ] 阳知乾，刘建忠，沙建芳，等. 高性能聚甲醛纤维的研发与应用实践[ J ]. 高科技纤维与应用，2021（ 1 ）：48 - 56.
[ 3 ] 张彩霞，孙亚楠，方 伟，等. 聚甲醛纺丝工艺进展及产品应用研究[ J ]. 合成材料老化与应用，2020，49（ 1 ）：117 - 119.
[ 4 ] 乃国星，张彩霞，孙亚楠，等. 通用级和纺丝级聚甲醛对比分析[ J ]. 工程塑料应用，2021，49（ 10 ）：120 - 123.
[ 5 ] 尚娇娇，兰建武，陈 胜，等. 聚甲醛流变性能及其纺丝性研究[ J ]. 化工新型材料，2013，41（ 4 ）：126 - 128.
[ 6 ] 李建华，杨胜林，汪晓东. 聚甲醛纤维的一步法制备及其性能研究[ J ]. 合成纤维，2019，48（ 9 ）：12 - 16.
[ 7 ] 关礼争，金 旺，王亚涛. 热拉伸工艺对聚甲醛纤维结构与性能的影响[ J ]. 合成纤维工业， 2018，41（ 3 ）：25 - 28，32.
[ 8 ] 李 响，关礼争，金 旺，等. 共聚甲醛的聚合工艺研究及产品热稳定性能评价[ J ]. 塑料科技，2022，50（ 11 ）：93 - 96.
[ 9 ] 杨大志，李建华. 共聚甲醛热稳定性能评价及研究[ J ]. 塑料工业，2019，47（ 6 ）：118 - 121. |
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