纺织学报 ›› 2022, Vol. 43 ›› Issue (03): 123-131.doi: 10.13475/j.fzxb.20210105609

• 染整与化学品 • 上一篇    下一篇

高耐磨性复合涂层涤纶通丝的制备及其性能

解开放1,2, 罗凤香1,2, 包新军1,2(), 周衡书1,2, 徐广标3   

  1. 1.湖南工程学院 纺织服装学院, 湖南 湘潭 411104
    2.湖南工程学院 湖南省新型纤维面料及加工工程技术研究中心, 湖南 湘潭 411104
    3.东华大学 纺织学院, 上海 201620
  • 收稿日期:2021-01-22 修回日期:2021-12-31 出版日期:2022-03-15 发布日期:2022-03-29
  • 通讯作者: 包新军
  • 作者简介:解开放(1988—),男,讲师,博士。主要研究方向为产业用纺织品。
  • 基金资助:
    湖南省自然科学基金项目(2020JJ4245);湖南省教育厅优秀青年项目(19B129)

Preparation and performance of composite coated polyester harness cord with high wearability

XIE Kaifang1,2, LUO Fengxiang1,2, BAO Xinjun1,2(), ZHOU Hengshu1,2, XU Guangbiao3   

  1. 1. College of Textile and Fashion, Hunan Institute of Engineering, Xiangtan, Hunan 411104, China
    2. Engineering Technology Research Center of New Fiber Fabric and Processing, Hunan Institute of Engineering,Xiangtan, Hunan 411104, China
    3. College of Textiles, Donghua University, Shanghai 201620, China
  • Received:2021-01-22 Revised:2021-12-31 Published:2022-03-15 Online:2022-03-29
  • Contact: BAO Xinjun

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摘要：

为探索和优化通丝的涂层工艺,并开发出耐磨性优异的通丝,以部分醇解聚乙烯醇(PVA)、水性聚氨酯(PU)和水性环氧树脂(EP)为成膜剂,采用2种方法对编织涤纶通丝进行涂层。一步法采用PVA直接涂层,两步法采用PU/PVA或EP/PVA进行复合涂层。对涂层后通丝进行烘干与热定形处理,对其表观形貌、化学结构、弯曲性能、拉伸性能和耐磨性能进行测试和分析,以评价PU或EP预处理对PVA涂层通丝力学性能的影响。结果表明:PU和EP能够减少PVA涂层与通丝间裂纹的产生,通过在涤纶通丝表面引入极性基团,改善PVA涂层与涤纶间的界面性能;PU/PVA涂层通丝比EP/PVA涂层通丝具有更好的综合性能;经1.5% PU/PVA复合涂层的通丝具有优异的耐磨性能,比PVA涂层通丝的耐磨性提高了135.7%。

关键词: 涤纶通丝, 复合涂层, 聚乙烯醇, 聚氨酯, 环氧树脂, 耐磨性能, 提花织机

Abstract:

In order to explore and optimize the coating process of harness cord and develop harness cord for improved wearability, partially alcoholyzed polyvinyl alcohol (PVA), water-based polyurethane (PU) and epoxy resin (EP) were used as film formers, and two methods were used to coat the braided polyester (PET) harness cord. One-step method used PVA for direct coating, and two-step method used PU/PVA or EP/PVA for composite coating. After drying and heat setting, the apparent morphology, chemical structure, bending properties, tensile properties and wearability of coated harness cord were measured and analyzed to evaluate the effect of PU or EP pretreatment on the mechanical properties of PVA coated harness cord. The results show that both PU and EP can reduce the cracks between PVA coating and PET harness cord. By introducing polar groups on the surface of PET harness cord, the interface performance between the PVA coating and the PET fibers is improved. PU/PVA coated harness cord has better comprehensive properties than that of EP/PVA coated harness cord. The 1.5% PU/PVA coated harness cord demonstrates the best wearability, with an increase of 135.7% compared with PVA coated harness cord.

Key words: polyester harness cord, composite coating, polyvinyl alcohol, polyurethane, epoxy resin, wearability, jacquard loom

中图分类号: 

  • TS103.6

表1

涤纶长丝的基本性能"

试样 线密度/
dtex		 断裂强度/
(cN·dtex-1)		 断裂伸
长率/%		 初始模量/
(cN·dtex-1)		 断裂比功/
(cN·dtex-1)
单丝 3.90 8.62 22.28 55.54 1.03
长丝 270.21 7.80 17.70 62.50 0.70

表2

编织通丝的结构参数与基本性能"

编织数/股 直径/mm 编织节距/mm 芯层纤维根数 断裂强力/N 断裂伸长率/% 弯曲刚度/
(cN·cm2)		 弯曲滞后矩/
(cN·cm)		 耐磨次数
16(外)+4(芯) 0.90 3.80 288 258.55 33.32 0.48 0.97 125 876

表3

通丝涂层实验用化学试剂"

试剂 性状 pH值 固含量/% 其他 生产厂家
PU(PC65-25) 棕黄色液体 — 65.0 — 上海西达国际化工有限公司
EP(618EP) 无色透明液体 — 55.0 — 江阴双雄新材料有限公司
PVA(1788) 固体粉末 5.0~7.0 90.0 玻璃化转变温度85.0 ℃ 上海西达国际化工有限公司
CMC(化学纯) 白色纤维状粉末 6.0~8.5 — 黏度800.0~1 200.0 mPa·s 中国医药集团有限公司
DAHC(分析纯) 白色结晶粉末 4.0~5.5 99.0 相对分子质量226.2 中国医药集团有限公司
TiO2(T104946) 固体粉末 — 99.8 相对分子质量79.9 上海阿拉丁生化科技股份有限公司
渗透剂(8601) 浅黄色透明液体 7.5~8.5 — 浊点大于75.0 ℃ 江苏省海安石油化工厂

图1

通丝的涂层工艺"

表4

PVA涂层通丝的配方"

质量分数/% 浆料黏度/
(mPa·s)
PVA1788 CMC DAHC 渗透剂
8601		 纳米
TiO2		 去离子
水
6.00 0.40 0.08 0.20 2.00 91.32 340.47

图2

试样与动态接触角测试示意图"

图3

通丝弯曲性能测试试样"

图4

通丝耐磨性测试示意图"

图5

未涂层通丝和PVA、PU/PVA、EP/PVA涂层通丝的表面形貌"

图6

PVA、PU/PVA和EP/PVA涂层通丝的横截面(×1 200)"

图7

未涂层通丝和1.5% PU、PVA、1.5%PU/PVA涂层通丝的红外图谱"

图8

未涂层通丝和1.5% EP、PVA、1.5% EP/PVA涂层通丝的红外图谱"

图9

PVA、PU/PVA和EP/PVA涂层通丝的弯曲性能"

图10

PVA、PU/PVA和EP/PVA涂层通丝的拉伸性能"

图11

PVA、PU/PVA和EP/PVA涂层通丝的耐磨性能"

图12

PU和EP与PVA的分子间作用"

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