推荐回答(3个)
MPP管是以聚丙烯为基料进行配方改性制作而成,称为改性聚丙烯(MPP)管,成本较高;而PE管是以高密度聚乙烯(HDPE)为原料挤塑成型,成本相对要低一些。但由于从外观不易区别管材成份是改性聚丙烯(MPP)还是高密度聚乙烯(HDPE),因此部份MPP管道厂商在利益的驱使下以HDPE冒充MPP,更有甚者以HDPE回料或废料制成管材冒充MPP管,一些原本正规厂商由于受成本及价格的影响,要么放弃MPP管生产,要么也步入造假行列;如此良莠不齐的状况给电力工程的电缆敷设留下了严重的安全隐患,由于电力电缆长期运行在70ºС左右高温下,而HDPE管在温度40ºС以上时强度大幅度下降(70ºС强度下降2/3),受外力影响软化而变形,极大影响了后期电缆的维护。
MPP管:改性聚丙烯(M PP)电力电信电缆管,是无须大量挖泥、挖土及破坏路面,在道路、铁路、建筑物、河床下等特殊地段敷设管道、电缆等施工工程。与传统的“挖槽埋管法”相比,非开挖工程更适应当前的环保要求,去除因传统施工所造成的尘土飞扬、交通阻塞等扰民因素,这一技术还可以在一些无法实施开挖作业的地区铺设管线,如古迹保护区、闹市区、农作物及农田保护区、高速公路、河流等,可广泛应用于市政、电信、电力、煤气、自来水、热力等管线工程。改性聚丙烯(MPP)电力电信电缆管具有抗高温、耐外压的特点,适用于1 0KV以上高压输电线电缆排管管材。管材常用规格为中11 O~中250,分为普通型和加强型。普通型适用于开挖铺设施工和非开挖穿越施工埋深小于4M的工程;加强型适用于非开挖穿越施工埋深大于4M的工程。HDPE聚乙烯给水管是以优质聚乙烯树脂为主要原料,添加必要的抗氧剂、紫外线吸收剂等助剂,经挤塑机挤出加工而成的一种新型塑料管材产。优越的物理性能:韧性、柔性和挠性好,PE管道断裂伸长率超过500%,局部震动不会引起全部管子震动,抗震性很强。具有优异的抗冲击、抗地震、抗磨损性能、耐冲击强度优于金属管道,在输送矿砂、泥浆时是钢管使用寿命的 4 倍。另外,聚乙烯的挠性使PE管道可以盘卷(尤其口径小的PE管道),减少了大量的连接管件。

MPP管是玻璃纤维材质的玻璃钢电力管,颜色一般为白绿或者红色,口径以50毫米到200为主,大口径的也有到4米的。MPP的引入可提高填料与PP的相容性,改善复合材料的性能,提高材料的整体热稳定性和局部抗热能力;四是MPP也应用于自由基活性废料的固化。
HDPE是高密度聚乙烯,一般是排水管,一般口径是160-1200毫米的,颜色以黑色为主,HDPE一般是叫HDPE双壁波纹管,这种比较便宜。HDPE是一种由乙烯共聚生成的热塑性聚烯烃.虽然HDPE在1956年就已推出,但这种塑料还没达到成熟水平.这种通用材料还在不断开发其新的用途和市场.
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