CN114851636A - 一种增强改性长距离输送及便捷施工upe给水管材 - Google Patents
一种增强改性长距离输送及便捷施工upe给水管材 Download PDFInfo
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Abstract
本发明涉及管材领域,具体为一种增强改性长距离输送及便捷施工UPE给水管材。其由内层和外层经热熔复合构成,内层和外层均采用聚乙烯共混改性复合材料制成,聚乙烯共混改性复合材料包括如下按重量份计的材料:55‑57份PE100级高密度聚乙烯,5‑7份超高分子量聚乙烯UHMWPE,10‑12份茂金属MPE,5‑9份茂金属增韧相容剂,0.2‑0.4份熔脂调节剂,0.5‑1份增刚成核剂,1‑2份分散剂EBS,15‑25份环保食品级改性纳米碳酸钙,2‑4份环保碳黑,0.3‑0.5份光热稳定剂,0.3‑0.5份抗氧剂1010,0.3‑0.5份抗氧剂168。本发明外部承压能力强、抗冲击性能高、抗穿刺性能高、拉伸强度足、韧性好、耐候性好、耐老化性能好。
Description
技术领域
本发明涉及管材领域,特别是涉及一种增强改性长距离输送及便捷施工UPE给水管材。
背景技术
早期水网使用钢筋混凝土管和金属管。钢筋混凝土管在输送过程中阻力较大,输送效率低。金属水管易腐蚀,造价高,寿命短。塑料因韧性好,抗疲劳强度好,可挠性好,易于加工,使用寿命长,逐渐满足市场需要。PE管材逐步了取代了传统钢筋混凝土管和钢管;PE给水管材集环境保护、节能、卫生、密封性、防腐蚀、抗震等级等优势于一体,在管道行业具备不能代替性。
但PE给水管在应用中表现诸多的缺陷和问题:PE给水管材不能露天储放太久,经历高温天气暴晒后,品质变差、变质、变脆、性能降低,管材老化,降低使用寿命;热胀冷缩后内应力大,毁坏管道;熔接品质不高。熔接管材时,接口热熔对接品质难以保证,在二次加压供水管路中受水压时高时低的摇摆不定危害,加之高低温热胀冷缩、地基沉降等原因,都很有可能产生管道爆裂现象;PE管材强度低,抗慢速裂纹增长能力差,在工地施工或者运输过程中,遇到坚硬石头、金属碰撞挤压易引起凹坑,裂纹扩张,直至穿孔爆管。
发明内容
本发明目的是针对背景技术中存在的问题,提出一种增强改性长距离输送及便捷施工UPE给水管材,外部承压能力强、抗冲击性能高、抗穿刺性能高、拉伸强度足、韧性好、耐候性好、耐老化性能好。
本发明的技术方案,一种增强改性长距离输送及便捷施工UPE给水管材,由内层和外层经热熔复合构成,内层和外层均采用聚乙烯共混改性复合材料制成,聚乙烯共混改性复合材料包括如下按重量份计的材料:
55-57份PE100级高密度聚乙烯,5-7份超高分子量聚乙烯UHMWPE,10-12份茂金属MPE,5-9份茂金属增韧相容剂,0.2-0.4份熔脂调节剂,0.5-1份增刚成核剂,1-2份分散剂EBS,15-25份环保食品级改性纳米碳酸钙,2-4份环保碳黑,0.3-0.5份光热稳定剂,0.3-0.5份抗氧剂1010,0.3-0.5份抗氧剂168。
优选的,PE100级高密度聚乙烯采用延长049或者延长23050;超高分子量聚乙烯UHMWPE呈粉末状;茂金属MPE采用埃克森美孚3518CB;茂金属增韧相容剂采用威达美6102;增刚成核剂采用NA960;环保食品级改性纳米碳酸钙为3000目以上。
优选的,聚乙烯共混改性复合材料的制备方法包括如下步骤:
S1、按以下重量份配置原料:55-57份PE100级高密度聚乙烯,5-7份超高分子量聚乙烯UHMWPE,10-12份茂金属MPE,5-9份茂金属增韧相容剂,0.2-0.4份熔脂调节剂,0.5-1份增刚成核剂,1-2份分散剂EBS,15-25份环保食品级改性纳米碳酸钙,2-4份环保碳黑,0.3-0.5份光热稳定剂,0.3-0.5份抗氧剂1010,0.3-0.5份抗氧剂168;
S2、包括如下S21和S22共两种制备方式:
S21、将配置的原料加入高速混合机中混合10-15分钟,制得混合物料;再将混合物料加入到双螺杆挤出机组中进行熔融、塑化、混炼、挤出、造粒,最后冷却切粒,得到聚乙烯共混改性复合材料,料筒温度分别为:165℃,170℃,180℃,180℃,180℃,口模温度为:180℃;
S22、利用密炼机进行混合、改性、熔融、塑化、混炼,再通过单螺杆挤出机组进行挤出、造粒,最后冷却切粒,得到聚乙烯共混改性复合材料。
优选的,采用一步法制得聚乙烯共混改性复合材料,先用360度旋转的带加温装置的高混机对物料进行高混,使各种物料能达到高度均化;再通过双螺杆造粒机进行改性造粒,得到聚乙烯共混改性复合材料。
优选的,将内层材料和外层材料分别加入两台挤出机中挤出,物料通过挤出机单螺杆加热熔融塑化输送至机头口模,管材内层通过内定径套抽真空再冷却定型,管材外层在内部空气压力和外部真空吸力的共同作用下和模块紧密接触成型,管材内、外层均匀地熔合在一起,得到增强改性长距离输送及便捷施工UPE给水管材,内层挤出各段温度:170℃,180℃,190℃,190℃,190℃,外层挤出各段温度:170℃,180℃,190℃,190℃,190℃。
与现有技术相比,本发明具有如下有益的技术效果:
本发明内、外层材料均采用聚乙烯共混改性复合材料制成,聚乙烯共混改性复合材料用超高分子量聚乙烯、茂金属聚乙烯和高密度聚乙烯共混,采用茂金属相容增韧剂和纳米无机材料复合增强增韧方法进行共混改性,提高了体系的相容性,增强了体系材料的抗冲击性能、抗穿刺性能、拉伸、韧性、耐候性、耐老化性能。为了改善无机填充的增强增韧功能,采用纳米级无机粉体材料以立体网格结构形态分布其中,并通过EBS高分散剂,对无机粉体进行高效分散。
附图说明
图1为本发明实施例的结构示意图;
图2为本发明实施例的局部结构剖视图;
图3为图2中A处的结构放大图;
图4为图2中B处的结构放大图。
附图标记:1、波纹管;2、密封圈;3、密封环;4、套筒;41、扣手限位部;411、凹槽;401、卡槽;402、开口。
具体实施方式
本发明提出的一种增强改性长距离输送及便捷施工UPE给水管材即为波纹管1,由内层和外层经热熔复合构成,波纹管1使用如图1-4所示的直波纹管用双重密封限位套筒连接结构进行连接,双重密封限位套筒连接结构包括密封圈2、密封环3和套筒4。波纹管1、密封圈2、密封环3和套筒4均为回转形结构且同轴设置,波纹管1沿轴向具有多个波峰部,相邻波峰部之间形成波谷部,密封圈2和密封环3并排卡套设置在两个波谷部处,密封圈2为橡胶圈,密封圈2和密封环3均抵紧在套筒4内周面上,套筒4内周面具有供密封圈2卡入的卡槽401。
双重密封限位套筒连接结构能提高直波纹管和套筒连接密封性并防止出现泄露。在波纹管1上的两个波谷部处分别套上密封圈2和密封环3,密封圈2和密封环3均起到密封作用。在连接波纹管1和套筒4时,将波纹管1端部插入套筒4内部,密封圈2卡入并抵紧在卡槽401处,在起到密封效果的同时还能起到安装定位作用,密封环3抵紧在套筒4内周面上,密封圈2和密封环3共同作用,有效的提高了波纹管1和套筒4连接时的密封性能。密封圈2至波纹管1轴向中部的距离小于密封环3至波纹管1轴向中部的距离,则密封环3先于密封圈2进入套筒4内,密封环3先经过卡槽401,再由密封圈2卡入卡槽401。如图3所示,密封环3包括连接板部和多个呈阶梯性分布的连接环部,连接板部位于波谷部处,多个连接环部一体连接在连接板部外周面上,多个连接环部的直径沿远离密封圈2方向逐渐增大,则在密封环3移动过程中,较大直径的连接环部会向较小直径的连接环部方向发生变形,实现与不同尺寸的套筒4之间的密封,适用范围更大。密封环3也可采用圆环形橡胶圈,同样能起到有效的密封效果。
如图4所示,直波纹管用双重密封限位套筒连接结构中,套筒4上设置有U形的开口402并形成扣手限位部41,扣手限位部41具有能卡嵌在波谷部处的内凸部,内凸部会卡在波纹管1的波谷部处,以对波纹管1进行进一步的限位,提高波纹管1和套筒4连接的稳定性和牢靠性。扣手限位部41外侧表面并排设置有多条凹槽411,在连接波纹管1和套筒4时,便于扣手限位部41发生形变,并在波纹管1和套筒4连接完毕后使得内凸部抵紧在波谷部处。还可在套筒4内周面上设置有定位凸台,波纹管1端部抵接在定位凸台处,定位凸台用于对从套筒4两端插入的两个波纹管1进行定位,保证波纹管1能规整的进行组装。
实施例一
本发明提出的一种增强改性长距离输送及便捷施工UPE给水管材,内层和外层均采用聚乙烯共混改性复合材料制成,聚乙烯共混改性复合材料包括如下按重量份计的原料:
55份PE100级高密度聚乙烯延长049,5份超高分子量聚乙烯UHMWPE粉未,10份茂金属MPE埃克森美孚3518CB,5份茂金属增韧相容剂威达美6102,0.2份熔脂调节剂,0.5份增刚成核剂NA960,2份分散剂EBS,25份环保食品级改性3000目碳酸钙,4份环保碳黑,0.5份光热稳定剂52,0.5份抗氧剂1010,0.5份抗氧剂168。
将以上原料加入高速混合机中混合10-15分钟,制得混合物料,再将混合物料加入到双螺杆挤出机组中进行熔融、塑化、混炼、挤出、造粒,最后冷却切粒,得到增强改性长距离输送及便捷施工UPE给水管材专用料,即聚乙烯共混改性复合材料,料筒温度分别为:165℃,170℃,180℃,180℃,180℃,口模温度为:180℃;或者是利用密炼机进行混合、改性、熔融、塑化、混炼,再通过单螺杆挤出机组进行挤出、造粒,最后冷却切粒,得到增强改性长距离输送及便捷施工UPE给水管材专用料,即聚乙烯共混改性复合材料。
制备本发明增强改性长距离输送及便捷施工UPE给水管材时,将内层材料和外层材料分别加入两台挤出机中挤出,物料通过挤出机单螺杆加热熔融塑化输送至机头口模,管材内层通过内定径套抽真空再冷却定型,管材外层在内部空气压力和外部真空吸力的共同作用下和模块紧密接触成型,管材内、外层均匀地熔合在一起,得到增强改性长距离输送及便捷施工UPE给水管材,内层挤出各段温度::170℃,180℃,190℃,190℃,190℃,外层挤出各段温度:170℃,180℃,190℃,190℃,190℃。
表1:实施例一制备的增强改性长距离输送及便捷施工UPE给水管材的物理力学性能
实施例二
本发明提出的一种增强改性长距离输送及便捷施工UPE给水管材,其与实施例一的区别在于,聚乙烯共混改性复合材料包括如下按重量份计的原料:
57份PE100级高密度聚乙烯延长049,7份超高分子量聚乙烯UHMWPE粉未,12份茂金属MPE埃克森美孚3518CB,9份茂金属增韧相容剂威达美6102,0.4份熔脂调节剂,0.1份增刚成核剂NA960,1份分散剂EBS,15份环保食品级改性3000目碳酸钙,2份环保碳黑,0.3份光热稳定剂52,0.3份抗氧剂1010,0.3份抗氧剂168。
表2:实施例二制备的增强改性长距离输送及便捷施工UPE给水管材的物理力学性能
聚乙烯共混改性复合材料用超高分子量聚乙烯、茂金属聚乙烯和高密度聚乙烯共混,采用茂金属相容增韧剂和纳米无机材料复合增强增韧方法进行共混改性,提高了体系的相容性,增强了体系材料的抗冲击性能、抗穿刺性能、拉伸、韧性、耐候性、耐老化性能。为了改善无机填充的增强增韧功能,采用纳米级无机粉体材料以立体网格结构形态分布其中,并通过EBS高分散剂,对无机粉体进行高效分散。
本发明对管材实际埋地的抗内外压性能、抗冲击性能、环柔性能、耐蠕变性能、高低温性能等的要求,对管材的结构波形包括内外层壁厚、波峰侧壁斜度、波距、波纹宽度、波峰结构高度、波谷宽度等特征尺寸进行了有限元分析、模拟计算及优化,设计出内壁壁厚合理、波峰结构高、波峰结构有效面积大的波纹结构,有力增强了管材刚性和柔性。
增强改性长距离输送及便捷施工UPE给水管材外壁呈波纹状且为直管形式,管材采用双重密封限位套筒连接结构中套筒4上的扣手限位部41连接,套筒4采用PP材料制成,与已往的PE给水管材相比,打破了用热熔或者电熔的连接方式,它不需要复杂的热熔工具、热熔条件和人员操作技能,在没有电、没有工具的野外施工环境下也能施工,并且属于柔性连接方式,此连接方式在保证管材能承受一定的内外压力的情况下,还能通过密封圈2和密封环3保证管材管件的连接处永不漏水。
上面结合附图对本发明的实施方式作了详细说明,但是本发明并不限于此,在所属技术领域的技术人员所具备的知识范围内,在不脱离本发明宗旨的前提下还可以作出各种变化。
Claims (5)
1.一种增强改性长距离输送及便捷施工UPE给水管材,其特征在于,由内层和外层经热熔复合构成,内层和外层均采用聚乙烯共混改性复合材料制成,聚乙烯共混改性复合材料包括如下按重量份计的材料:
55-57份PE100级高密度聚乙烯,5-7份超高分子量聚乙烯UHMWPE,10-12份茂金属MPE,5-9份茂金属增韧相容剂,0.2-0.4份熔脂调节剂,0.5-1份增刚成核剂,1-2份分散剂EBS,15-25份环保食品级改性纳米碳酸钙,2-4份环保碳黑,0.3-0.5份光热稳定剂,0.3-0.5份抗氧剂1010,0.3-0.5份抗氧剂168。
2.根据权利要求1所述的一种增强改性长距离输送及便捷施工UPE给水管材,其特征在于,PE100级高密度聚乙烯采用延长049或者延长23050;超高分子量聚乙烯UHMWPE呈粉末状;茂金属MPE采用埃克森美孚3518CB;茂金属增韧相容剂采用威达美6102;增刚成核剂采用NA960;环保食品级改性纳米碳酸钙为3000目以上。
3.根据权利要求1所述的一种增强改性长距离输送及便捷施工UPE给水管材,其特征在于,聚乙烯共混改性复合材料的制备方法包括如下步骤:
S1、按以下重量份配置原料:55-57份PE100级高密度聚乙烯,5-7份超高分子量聚乙烯UHMWPE,10-12份茂金属MPE,5-9份茂金属增韧相容剂,0.2-0.4份熔脂调节剂,0.5-1份增刚成核剂,1-2份分散剂EBS,15-25份环保食品级改性纳米碳酸钙,2-4份环保碳黑,0.3-0.5份光热稳定剂,0.3-0.5份抗氧剂1010,0.3-0.5份抗氧剂168;
S2、包括如下S21和S22共两种制备方式:
S21、将配置的原料加入高速混合机中混合10-15分钟,制得混合物料;再将混合物料加入到双螺杆挤出机组中进行熔融、塑化、混炼、挤出、造粒,最后冷却切粒,得到聚乙烯共混改性复合材料,料筒温度分别为:165℃,170℃,180℃,180℃,180℃,口模温度为:180℃;
S22、利用密炼机进行混合、改性、熔融、塑化、混炼,再通过单螺杆挤出机组进行挤出、造粒,最后冷却切粒,得到聚乙烯共混改性复合材料。
4.根据权利要求3所述的一种增强改性长距离输送及便捷施工UPE给水管材,其特征在于,采用一步法制得聚乙烯共混改性复合材料,先用360度旋转的带加温装置的高混机对物料进行高混,使各种物料能达到高度均化;再通过双螺杆造粒机进行改性造粒,得到聚乙烯共混改性复合材料。
5.根据权利要求3所述的一种增强改性长距离输送及便捷施工UPE给水管材,其特征在于,将内层材料和外层材料分别加入两台挤出机中挤出,物料通过挤出机单螺杆加热熔融塑化输送至机头口模,管材内层通过内定径套抽真空再冷却定型,管材外层在内部空气压力和外部真空吸力的共同作用下和模块紧密接触成型,管材内、外层均匀地熔合在一起,得到增强改性长距离输送及便捷施工UPE给水管材,内层挤出各段温度:170℃,180℃,190℃,190℃,190℃,外层挤出各段温度:170℃,180℃,190℃,190℃,190℃。
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