一种新型高强度大伸长涤纶工业丝的制备
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摘要
以普通聚酯切片为原料,利用固相聚合装置对其干燥增黏,制得低含水率、高黏度聚酯切片,再经熔融纺丝制备出一种新型高强度、大伸长涤纶工业丝。采用X射线衍射仪、差示扫描量热仪对其进行了表征,并利用纤维强伸仪测试了纤维的力学性能。结果表明:固相聚合后的切片结晶度高达60%以上,含水率可达0.000 5%以下,特性黏度为1.105 d L/g。以此增黏切片为原料,可生产出纤度为472 dtex,断裂强度≥7.15 c N/dtex,断裂伸长率为23.7%的纤维。由于该产品具有强度高、伸长率大和毛丝数量少的特点,已在水处理的超滤膜支撑材料领域得到了应用。
Using the normal polyester chips as materials, the high viscosity polyester chips are prepared bySSP device, then the chips are melt-spun to prepare a new industrial polyester yarn with high strength andlarge elongation. The performance of chips are analyzed by X-ray diffraction, differential scanning calorime-try. The yarn's properties are analyzed by fiber strength measurement. The results show that the crystallineof chips increases to more than 60% after the solid phase polymerization, moisture content decreases to lessthan 0.000 5%, intrinsic viscosity is 1.105 d L/g. Using high viscosity polyester chips as material, the fine-ness of the product is 472 dtex, intensity is ≥7.0 c N/dtex, breaking elongation ratio is 23.7%. Because theproducts have high strength, large elongation and less fuzz, they have been used as ultrafiltration membranesupport materials in water treatment area.
Using the normal polyester chips as materials, the high viscosity polyester chips are prepared bySSP device, then the chips are melt-spun to prepare a new industrial polyester yarn with high strength andlarge elongation. The performance of chips are analyzed by X-ray diffraction, differential scanning calorime-try. The yarn's properties are analyzed by fiber strength measurement. The results show that the crystallineof chips increases to more than 60% after the solid phase polymerization, moisture content decreases to lessthan 0.000 5%, intrinsic viscosity is 1.105 d L/g. Using high viscosity polyester chips as material, the fine-ness of the product is 472 dtex, intensity is ≥7.0 c N/dtex, breaking elongation ratio is 23.7%. Because theproducts have high strength, large elongation and less fuzz, they have been used as ultrafiltration membranesupport materials in water treatment area.
引文
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[4]周东凯.新型纤维挂膜填料污水处理研究[D].北京:北京化工大学,2013:20-23.
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[6]高国洪,江秀明,庾培源,等.一步法生产涤-涤复合丝条干不匀率的优化[J].合成纤维,2014,43(11):14-16.
[7]朱湘萍,于维才,孙彦洁,等.高强型涤纶工业用全拉伸丝的工艺及设备[J].合成纤维,2013,42(1):38-42.
[8]张军.高分了量PET合成与SSP工艺优化研究[D].杭州:浙江大学,2011:106-109.
[9]崔利,庄耀中,姚敏刚,等.267 dtex/288 f竹炭涤纶预取向丝的生产[J].合成纤维,2015,44(6):19-21.
[2]雷晓东,熊蓉春,魏刚,等.膜分离法污水处理技术[J].工业水处理,2003,1(1):38-42.
[3]孙立坤.PVA/PVAm改性涤纶滤布复合膜制备及其抗污染性能研究[D].大连:大连理工大学,2012:3-4.
[4]周东凯.新型纤维挂膜填料污水处理研究[D].北京:北京化工大学,2013:20-23.
[5]赵阳.涤纶长丝基布结构对PVC涂层膜结构材料性能影响的研究[D].天津:天津工业大学,2009:4-6.
[6]高国洪,江秀明,庾培源,等.一步法生产涤-涤复合丝条干不匀率的优化[J].合成纤维,2014,43(11):14-16.
[7]朱湘萍,于维才,孙彦洁,等.高强型涤纶工业用全拉伸丝的工艺及设备[J].合成纤维,2013,42(1):38-42.
[8]张军.高分了量PET合成与SSP工艺优化研究[D].杭州:浙江大学,2011:106-109.
[9]崔利,庄耀中,姚敏刚,等.267 dtex/288 f竹炭涤纶预取向丝的生产[J].合成纤维,2015,44(6):19-21.