中国塑料 ›› 2023, Vol. 37 ›› Issue (9): 51-56.DOI: 10.19491/j.issn.1001-9278.2023.09.008

• 加工与应用 • 上一篇    下一篇

缓黏结预应力钢绞线用胶黏剂配方试验研究

邓卫娟(), 王桥, 胡伟, 杨帆, 惠湛   

  1. 西部机场集团有限公司,西安 710075
  • 收稿日期:2023-04-23 出版日期:2023-09-26 发布日期:2023-09-18
  • 作者简介:邓卫娟(1980-),女, 高级工程师,主要从事机场建设及相关胶黏剂材料研究,1542555600@qq.com

Study on formulation of adhesive for retard⁃bonding prestressed strands

DENG Weijuan(), WANG Qiao, HU Wei, YANG Fan, HUI Zhan   

  1. China West Airport Group Co,Ltd,Xi’an 710075,China
  • Received:2023-04-23 Online:2023-09-26 Published:2023-09-18

摘要:

为了研制一种适合于缓缓黏结预应力钢绞线用高性能胶黏剂,通过锥入度、邵氏硬度、力学性能和耐久性试验研究了环氧树脂E51/聚酰胺/填料体系胶黏剂,确定了满足缓黏结预应力钢绞线用胶黏剂性能的最优配方。结果表明,最优配方的初始锥入度为53.6(0.1 mm),抗折强度为23.82 MPa,抗压强度为75.14 MPa,拉伸剪切强度为18.92 MPa,耐湿热老化性能为13.44 %,高低温交变性能为12.57 %;满足行业标准的要求,为缓黏结预应力钢绞线用胶黏剂的开发提供参考价值。

关键词: 缓黏结预应力, 胶黏剂, 锥入度, 邵氏硬度, 力学性能, 耐久性

Abstract:

To develop a high⁃performance adhesive suitable for retard⁃bonding prestressed steel strands, an adhesive based on the E51 epoxy resin/polyamide/filler system was studied through cone penetration, Shore hardness, mechanical property and durability measurements, and its optimal formulation was determined to meet the requirement of performance for retard⁃bonding prestressed steel strands. The results indicated that the initial penetration for optimum formulation was 53.6 (0.1 mm), flexural strength was 23.82 MPa, compressive strength was 75.14 MPa, tensile shear strength was 18.92 MPa, damp heat aging resistance was 13.44 %, and the high⁃ and low⁃temperature alternating performance was 12.57 %. These properties can meet the requirements of industry standards and provides a reference value for the development of adhesive for retard⁃bonding prestressed steel strands.

Key words: retard?bonding prestress, adhesive, penetration, Shore hardness, mechanical property, durability

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