中国塑料 ›› 2011, Vol. 25 ›› Issue (08): 62-65 .DOI: 10.19491/j.issn.1001-9278.2011.08.016

• 加工与应用 • 上一篇    下一篇

钢丝缠绕增强塑料复合管用热熔胶耐水性能试验研究

饶静 郝宇杰 师俊 施建峰 马津津   

  1. 浙江大学化工机械研究所 浙江大学化工机械研究所
  • 收稿日期:2011-05-04 修回日期:2011-06-17 出版日期:2011-08-26 发布日期:2011-08-26

Test Research on Water Resistant Performance of Hot Melt Adhesive in Plastic Pipe Reinforced by Cross-Winding Steel Wires

  

  • Received:2011-05-04 Revised:2011-06-17 Online:2011-08-26 Published:2011-08-26

摘要: 采用吸水试验、拉伸试验和剥离试验相结合的方法研究钢丝缠绕增强塑料复合管用EP252热熔胶的耐水性能。研究表明:过塑钢丝在25℃水浴中浸泡14d后,除端部轻微"变黑"外,钢丝整体并未被腐蚀,热熔胶可以很好地保护钢丝;与25℃下未经任何处理的干EP252热熔胶试样相比,60℃吸水-解吸处理后的EP252热熔胶试样的屈服应力和弹性模量分别下降12%和7%,力学性能下降较为明显;对40℃和60℃水浴浸泡7d后的钢丝-热熔胶粘结体系进行剥离试验,试样剥离后大部分钢丝表面仍残留一层薄薄的热熔胶,以热熔胶内聚破坏为主,说明钢丝-热熔胶粘结体系具有较好的粘结强度。

关键词: 钢塑复合管, 热熔胶, 耐水性能, 力学性能, 黏结性能

Abstract: Combined with sorption test, tensile test and peeling test, the properties of water resistance of EP252 hot melt adhesive (HMA) were researched. Research indicated that plastic-coated steel wires were not corroded except the end of them at 25℃, so steel wires were well protected by HMA. Compared with HMA at 25℃, the yield stress and Young's modulus of treated HMA at 60℃ significantly decreased by 12% and 7%, respectively. Cohesive failure of HMA is the main failure mode in the peeling test of steel-HMA bonding system after water absorption under different temperature, because there still remained a very thin HMA layer on the surface of steel wires after peeling test, which demonstrated steel-HMA bonding system has a very high cohesive strength.

Key words: steel-plastic composite pipe, hot melt adhesive, water resistant property, mechanical property, bonding property