高等学校化学学报

高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 418.

• 论文 • 上一篇    

聚丙烯酸丁酯/蓖麻油聚氨酯SEN的研究(Ⅱ)——全SEN

马荣堂, 马嵩, 张军, 汤心颐   

  1. 吉林大学化学系, 长春, 130023
  • 收稿日期:1991-11-01 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 马荣堂

Studies on Poly(n-butyl Acrylate)/Polyurethane Based on Castor Oil SEN (Ⅱ)——Full-SEN

MA Rong-tang, MA Song, ZHANG Jun, TANG Xin-yi   

  1. Department of Chemistry, Jilin University, Changchun, 130023
  • Received:1991-11-01 Online:1992-03-24 Published:1992-03-24

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摘要： 聚丙烯酸丁酯(PnBA)/蓖麻油聚氨酯(COPU)半SEN(Semi-Simultaneous Elastomer Net-work)中[1],PnBA为线形分子,两组分间只能形成“蛇笼式”的互穿和缠结.这种缠结在外力作用下易脱开,组分间相容性虽较简单混合有所改善,但不甚显著,在某些组分比之下,力学性能也较差[1].全SEN中两组分均为交联结构,会产生一部分环套式的永久性缠结.只要不发生化学键断裂,这种网间缠结便不能脱开,它将对全SEN的形态、性能及组分间相容性产生较大的影响[2].

关键词: 聚丙烯酸丁酯, 蓖麻油聚氨酯, 全SEN, 拉伸行为, 形态

Abstract: Poly(N-butyl acrylate)/polyurethane based on castor oil (PnBA/COPU) full-SEN has been synthesized by simultaneous prepolymerization and the tensile, swelling and transition behavior, and morphology of full-SEN were characterized.The effect of composition on tensile strength, Young's modulus and elongation at break of full-SEN is similar to that of semi-SEN, but the values are higher than those of semi-SEN's as the weight fraction of PnBA is higher than 0.5.The micrographs of full-SEN show a two-phase morphology and the compatibility of the two components in full-SEN is much higher than semi-SEN.

Key words: Poly(n-butyl acrylate), Polyurethane based on castor oil, Full-SEN, Tensile property, Morphology

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