钢丝缠绕增强塑料复合管力学性能的试验研究  

Experimental Investigation on Mechanical Properties of Plastics Pipes Reinforced by Cross-winding Steel Wire

作　　者：郑津洋[1] 卢玉斌[1] 李翔 林秀锋[1] 朱彦聪[1] 徐平[2] 孙国有[1] 董华章 陈德福 邵泰清 

机构地区：[1]浙江大学化工机械研究所,浙江杭州310027 [2]浙江大学力学系,浙江杭州310027 [3]温州煌盛管业有限公司,浙江温州325011

出　　处：《中国塑料》2006年第6期82-88,共7页China Plastics

基　　金：国家教育部新世纪优秀人才支持计划(NCET-04-0526)国家教育部博士点专项科研基金(20050335065)温州市重大项目(G2004034)

摘　　要：对钢丝缠绕增强塑料复合管的短期爆破压力、应变、临界失稳压力和不同温度下的失效形式等进行了系统的试验研究。结果表明,与相同规格尺寸的PE管相比,其短期爆破压力、环向刚度和临界失稳压力分别提高了 129％、19％和57％;在内压作用下这种复合管有韧性破坏和过度变形两种失效模式,温度低于45℃时为韧性破坏,温度高于45℃时为过度变形;在相同压力下仅受径向内压作用时这种复合管的径向膨胀率明显高于径向轴向同时受力时的径向膨胀率。Polyethylene （PE） pipe reinforced by cross-winding steel wire （PSP） is a new type of plasticmatrix steel composite pipes. Its short-time burst pressure, strain, critical buckling pressure and failure mode under various temperatures were investigated. Compared with neat PE pipe, the short-time burst pressure at room temperature, ring stiffness, and critical buckling pressure of PSP was 129 %, 19 %, and 57 % higher, respectively. The internal pressure failure mode of PSP could be identified as ductile burst below 45 ℃ and excessive deformation above 45 ℃. At the same pressure, radial expansion rate of PSP subjected to radial force alone is much larger than that subjected to both radial and axial forces.

关 键 词：钢塑复合管 力学性能 失效模式 爆破压力 

分 类 号：TQ320.724[化学工程—合成树脂塑料工业]