Copolymerization approach of soft segment towards the adhesion improvement of polycarbonate-based thermoplastic polyurethane

编号 020028104

推送时间 20210308

研究领域 林产化工 

年份 2021 

类型 期刊 

语种 英语

标题 Copolymerization approach of soft segment towards the adhesion improvement of polycarbonate-based thermoplastic polyurethane

来源期刊 THE JOURNAL OF ADHESION

期 第281期

发表时间 20200707

关键词 Compatibilization;  adhesives;  thermoplastics;  polyurethane;  phase;  behaviour; 

摘要 Thermoplastic polyurethane elastomers (TPUs) have been intensively used as hot-melt adhesives (HMAs) due to their adherence ability that can be applied on hard surfaces. To overcome their drawbacks, such as low peel strength and deformation, the performance improvement of the TPUs-HMAs has become a challenging issue. In this study, the enhancement properties of the TPUs-HMAs were achieved from the copolymerization of a soft-segment technique. Two types of polycarbonate diols (PCDs) were utilized for the TPU production as a co-diol of the soft segment. The properties and phase behaviour of the TPUs with various ratios of copolymerized soft segment were analysed. The compatibility between the different types of the PCDs is defined by the concentration of the hydrogen bonding interaction between the hard and soft phases and the dimensions of the hard domains. The homogeneous dispersion of the hard domains in the soft phase promotes better stress transfer enhancing the mechanical properties and adhesion properties. The peel strength is measured between the TPUs/stainless steel joint, in which the highest value is accomplished with the formulation of 60:40?wt% of copolymerized soft segment, which is associated with the superior mechanical strength and the optimum compatible properties of the soft segment.

服务人员 尚玮姣

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