Crystallization kinetics parameters of waterborne polyurethane and its application in adhesive for shoes

CAO Gaohua; XIA Zhengbin; LEI Liang; ZHANG Yanhong

doi:10.3969/j.issn.0438-1157.2014.04.047

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Crystallization kinetics parameters of waterborne polyurethane and its application in adhesive for shoes

更新时间：2025-12-10

- Crystallization kinetics parameters of waterborne polyurethane and its application in adhesive for shoes
- CIESC Journal Issue 4, Pages: 1503-1508(2014)
- 作者机构：
  
  华南理工大学化学与化工学院,广东,广州,510640
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2014.04.047
  CLC： Q323.8TQ430.1
- Online First：27 November 2013，
  
  Published：27 November 2013
- 稿件说明：
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CAO Gaohua, XIA Zhengbin, LEI Liang, et al. Crystallization kinetics parameters of waterborne polyurethane and its application in adhesive for shoes[J]. CIESC Journal, 2014, (4): 1503-1508.
DOI：

CAO Gaohua, XIA Zhengbin, LEI Liang, et al. Crystallization kinetics parameters of waterborne polyurethane and its application in adhesive for shoes[J]. CIESC Journal, 2014, (4): 1503-1508. DOI： 10.3969/j.issn.0438-1157.2014.04.047.

摘要

以聚己二酸1，4-丁二醇酯（PBA）、六亚甲基二异氰酸酯（HDI）和异佛尔酮二异氰酸酯（IPDI）为主要原料，制备了不同软段分子量和不同硬段含量的水性聚氨酯（WPU）乳液。采用DSC技术表征了WPU胶膜在非等温和等温条件下的结晶行为，并以莫志深方程和Avrami方程为模型，对WPU胶膜的结晶行为进行了研究。WPU胶膜的非等温结晶动力学分析结果表明，随着WPU相对结晶度的增加，非等温结晶动力学参数F（T）增大，说明适当提高活化温度可提高WPU胶黏剂的结晶速率和初黏强度；WPU胶膜的等温动力学分析结果表明，不同软段分子量和不同硬段含量的WPU胶膜的等温结晶动力学参数t1/2与相应WPU胶黏剂的开放时间存在对应关系，即t1/2较大者，相应WPU胶黏剂的开放时间较长。

Abstract

Waterborne polyurethane (WPU) dispersions with different molecular weights of soft segment and different contents of hard segment were synthesized by using polyethylene glycol adipate diol (PBA)

isophorone diisocyanate (IPDI)

hexamethylene diisocyanate (HDI) as the main raw materials. The crystallization behavior of WPU films under isothermal and non-isothermal conditions were characterized by DSC

and their crystallization kinetics were investigated by Avrami equation and Mo Zhishen equation

respectively. The non-isothermal crystallization kinetics results showed that the non-isothermal crystallization kinetics parameters F(T) increased with the increase of relative crystallinity

which suggested that enhancement of activation temperature could improve the crystallization rate and initial bonding strength of WPU adhesive. The isothermal crystallization kinetics results indicated that a correspondence could be found between isothermal crystallization kinetics parameters t1/2 of WPU films and the open time of WPU adhesive. The larger the t1/2 of WPU films was

the longer the open time of WPU adhesive would have.

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