Study on the reliability of polypropylene adhesive resin for steel wire composite pipe
Polypropylene adhesive resin was prepared by using maleic anhydride grafted polypropylene,polypropylene pipeline specific materials,and elastomers as raw materials.The steel wire configuration of the reinforcement layer of polypropylene steel wire pipe was designed by force balance method,and the polypropylene adhesive resin was used for the composite of polypropylene steel wire pipe.The reliability of polypropylene adhesive resin to polypropylene steel wire composite pipes was studied through peeling test,flattening test,high and low temperature cycling,blasting test,and static hydraulic pressure test.The research results showed that,the shear strengths of polypropylene adhesive resin for steel wire bonding at room temperature and 80℃were 24.1 and 15.6 MPa,respectively.The peel strength of the pipe was 19.1 N/mm.Flattening test and high and low temperature cycling test confirmed that polypropylene adhesive resin had good bonding effect on the steel wire of the core tube,outer layer,and reinforcement layer of the pipe.The burst pressure of polypropylene steel wire pipe was 9.36 MPa,which met the requirement of a burst pressure greater than 3 times the nominal pressure.The polypropylene steel wire pipe passed the 20℃/3 PN/1 h static hydraulic pressure test,indicating that the polypropylene adhesive resin exhibited excellent composite effect on the polypropylene steel wire pipe.
万方数据
维普
