CN107763326A - 防腐高强度耐磨复合输送管及其制备方法 - Google Patents
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Abstract
本发明提供了一种防腐高强度耐磨复合输送管及其制备方法。防腐高强度耐磨复合输送管包括有从内向外依次设置的脱模层、定型层、耐磨层、骨架层以及抗冲击层;骨架层包括有主体和均匀分布于主体内的纤维束。本发明中,脱模层提高了脱模效率,同时保证输送管内壁保持洁净光滑;定型层起定型作用,且增强输送管的抗拉强度;耐磨层其耐磨性、耐油性以及耐热性较好,适用于有机物料和高硬度物料的输送;纤维束分布于骨架层的主体中,增强骨架层的抗拉强度,避免输送管在使用过程中被拉断;进而使输送管满足海洋资源开采和填海造地对输送管的要求。
Description
技术领域
本发明涉及输送管技术领域,尤其涉及防腐高强度耐磨复合输送管及其制备方法。
背景技术
在海洋资源开采和填海造地的过程中,需要用输送管对可燃冰、石油、泥沙等物料进行输送。由于海水是一种强的腐蚀介质,且需要在高压力的海底作业,因而对输送管的防腐性和强度要求很高。同时,在输送过程中,由于海底的复杂环境,物料中会存在高硬度和高强度的物质,因而对输送管的耐磨性要求很高。现有的输送管没法同时满足以上要求,进而制约了海洋资源开采和填海造地的发展。
发明内容
本发明要解决的技术问题是根据上述现有技术的不足,提供一种防腐高强度耐磨复合输送管及其制备方法,用以提高输送管在海水中的防腐性、抗压性以及耐磨性,进而促进海洋资源开采和填海造地的发展。
本发明的技术方案如下:
一种防腐高强度耐磨复合输送管,包括有从内向外依次设置的脱模层、定型层、耐磨层、骨架层以及抗冲击层;所述骨架层包括有主体和均匀分布于所述主体内的纤维束。
进一步地,所述脱模层由脱模布缠绕而成,所述定型层由定型绳缠绕而成且为网状结构,所述耐磨层由耐磨布缠绕而成。
进一步地,所述脱模布由LDPE组成,所述定型绳由FRP组成,所述耐磨布由NBR组成,所述抗冲击层由PU组成。
进一步地,按重量百分比,所述骨架层的原料包括有:10-20%石墨烯浆料,37.5-47.5%球墨铸铁,37.5-47.5%纤维束。
进一步地,所述球墨铸铁和纤维束重量相等。
进一步地,按重量百分比,所述纤维束包括有5-15%的碳纤维和85-95%的无碱玻璃纤维。
如上所述一种防腐高强度耐磨复合输送管的制备方法,包括如下步骤:
a.通过缠绕成型工艺依次将脱模布、定型绳以及第一耐磨布均匀缠绕在模芯上,使模芯外表面依次从内向外包覆有脱模层、定型层和耐磨层;
b.在耐磨层外表面均匀涂喷粘合剂,并把模芯放入模腔内;
c.把骨架层的原料搅拌均匀,并将骨架层的原料挤出到模腔内,冷却脱模,得到骨架层;
d.通过挤出包覆成型工艺,使骨架层外表面包覆有抗冲击层,脱模,得到防腐高强度耐磨复合输送管。
进一步地,步骤b中,所述粘合剂为丙烯酸酯胶。
进一步地,步骤c中,先将石墨烯浆料和球墨铸铁进行第一次搅拌,第一次搅拌温度为45-50℃,冷却,加入纤维束后进行第二次搅拌。
进一步地,步骤c中,挤出压强为1.6-1.8MPa。
与现有技术相比,本发明具有如下有益效果:(1)最内层为LDPE脱模层,不仅利于成型后的输送管与模芯分离,提高脱模效率,同时保证输送管内壁保持洁净光滑,利于物料输送;(2)网状结构的FRP定型层不仅能够对脱模层起定型作用,还能够增强输送管的抗拉强度,避免输送管在使用过程中被拉断;(3)NBR耐磨层其耐磨性、耐油性以及耐热性较好,使其能够适用于有机物料(如可燃冰、石油)和高硬度物料(如砂石)的输送,满足海洋资源开采和填海造地对输送管的要求;(4)脱模层、定型层和耐磨层均通过缠绕成型工艺制得,能够提高各层的抗拉强度;(5)石墨烯浆料与球磨铸铁粉末混合固化后得到的骨架层,与单一材料组成的球磨铸铁管相比,骨架层质量更轻,强度、耐磨性、防腐性也更加优秀;(6)纤维束分布于骨架层的主体中,增强骨架层的抗拉强度,避免输送管在使用过程中被拉断;(7)碳纤维强度高但成本高,玻璃纤维比碳纤维强度低但成本低,两者通过合理的比例搭配使用,能够互补长短;同时,无碱玻璃纤维比常见的玻璃纤维强度高;(8)PU抗冲击层具有弹性,能够降低外力对输送管的撞击程度,进而保护输送管。
附图说明
图1是本发明实施例的截面图。
附图标记
10-脱模层,20-定型层,30-耐磨层,40-骨架层,
41-主体,42-纤维束,50-抗冲击层。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述。
如图1所示,本发明提供的实施例,一种防腐高强度耐磨复合输送管,包括有从内向外依次设置的脱模层10、定型层20、耐磨层30、骨架层40以及抗冲击层50;骨架层40包括有主体41和均匀分布于主体41内的纤维束42。其中,纤维束42分布于骨架层40的主体41中,增强骨架层40的抗拉强度,避免输送管在使用过程中被拉断。
脱模层由脱模布缠绕而成,定型层由定型绳缠绕而成且为网状结构,耐磨层由耐磨布缠绕而成。脱模布由LDPE(低密度聚乙烯)组成,定型绳由FRP(纤维增强复合材料)组成,耐磨布由NBR(丁腈橡胶)组成,抗冲击层由PU(聚氨酯)组成。LDPE脱模层、FRP定型层和NBR耐磨层均通过缠绕成型工艺制得,能够提高各层的抗拉强度。PU抗冲击层具有弹性,能够降低外力对输送管的撞击程度,进而保护输送管
按重量百分比,骨架层的原料包括有:15%石墨烯浆料,45%球墨铸铁,45%纤维束。其中,本实施例中,优选15Kg石墨烯浆料,45Kg球墨铸铁,45Kg纤维束。其中,石墨烯浆料由石墨烯粉末和分散剂组成,分散剂能使石墨烯粉末均匀分布在球墨铸铁内;按重量百分比,本实施例中,石墨烯浆料含有15%石墨烯粉末和85%分散剂。
按重量百分比,纤维束包括有10%的碳纤维和90%的无碱玻璃纤维。其中,本实施例中,优选4.5Kg碳纤维和40.5Kg无碱玻璃纤维。
上述一种防腐高强度耐磨复合输送管的制备方法,包括如下步骤:
a.通过缠绕成型工艺依次将脱模布、定型绳以及第一耐磨布均匀缠绕在模芯上,使模芯外表面依次从内向外包覆有脱模层、定型层和耐磨层;
b.在耐磨层外表面均匀涂喷粘合剂,并把模芯放入模腔内。其中,粘合剂为丙烯酸酯胶。
c.把骨架层的原料搅拌均匀,并将骨架层的原料挤出到模腔内,冷却脱模,得到骨架层。其中,原料搅拌具体步骤为:先将石墨烯浆料和球墨铸铁进行第一次搅拌,第一次搅拌温度为45-50℃,冷却到35℃,加入纤维束后进行第二次搅拌。由于此时的骨架层的原料为膏状,需要高压挤出,本实施例中需要的挤出压强为1.6-1.8MPa。
d.通过挤出包覆成型工艺,使骨架层外表面包覆有抗冲击层,脱模,得到防腐高强度耐磨复合输送管。
经过测量,本实施例提供的防腐高强度耐磨复合输送管,其比重为1.110-1.125g/cm3,邵氏硬度达到53HA,拉力强度达到21.3MPa,抗撕裂强度大于100Kg/cm,延伸率为6%,300%定伸应力大于10 MPa,阿克隆磨耗小于等于0.12,粘合强度为16KN/m,老化系数(热空气100℃*24h)为0.74。以上测量结果显示,本实施例提供的防腐高强度耐磨复合输送管其性能比现有的输送管优秀,适用于海洋资源开采和填海造地。
以上所揭露的仅为本发明较佳实施例而已,当然不能以此来限定本发明之权利范围,因此依本发明权利要求所作的等同变化,仍属本发明所涵盖的范围。
Claims (10)
1.一种防腐高强度耐磨复合输送管,其特征在于,包括有从内向外依次设置的脱模层、定型层、耐磨层、骨架层以及抗冲击层;所述骨架层包括有主体和均匀分布于所述主体内的纤维束。
2.根据权利要求1所述一种防腐高强度耐磨复合输送管,其特征在于,所述脱模层由脱模布缠绕而成,所述定型层由定型绳缠绕而成且为网状结构,所述耐磨层由耐磨布缠绕而成。
3.根据权利要求2所述一种防腐高强度耐磨复合输送管,其特征在于,所述脱模布由LDPE组成,所述定型绳由FRP组成,所述耐磨布由NBR组成,所述抗冲击层由PU组成。
4.根据权利要求1所述一种防腐高强度耐磨复合输送管,其特征在于,按重量百分比,所述骨架层的原料包括有:10-20%石墨烯浆料,37.5-47.5%球墨铸铁,37.5-47.5%纤维束。
5.根据权利要求4所述一种防腐高强度耐磨复合输送管,其特征在于,所述球墨铸铁和纤维束重量相等。
6.根据权利要求4所述一种防腐高强度耐磨复合输送管,其特征在于,按重量百分比,所述纤维束包括有5-15%的碳纤维和85-95%的无碱玻璃纤维。
7.如权利要求1-6任意一项所述一种防腐高强度耐磨复合输送管的制备方法,其特征在于,包括如下步骤:
a.通过缠绕成型工艺依次将脱模布、定型绳以及第一耐磨布均匀缠绕在模芯上,使模芯外表面依次从内向外包覆有脱模层、定型层和耐磨层;
b.在耐磨层外表面均匀涂喷粘合剂,并把模芯放入模腔内;
c.把骨架层的原料搅拌均匀,并将骨架层的原料挤出到模腔内,冷却脱模,得到骨架层;
d.通过挤出包覆成型工艺,使骨架层外表面包覆有抗冲击层,脱模,得到防腐高强度耐磨复合输送管。
8.根据权利要求7所述一种防腐高强度耐磨复合输送管的制备方法,其特征在于,步骤b中,所述粘合剂为丙烯酸酯胶。
9.根据权利要求7所述一种防腐高强度耐磨复合输送管的制备方法,其特征在于,步骤c中,先将石墨烯浆料和球墨铸铁进行第一次搅拌,第一次搅拌温度为45-50℃,冷却,加入纤维束后进行第二次搅拌。
10.根据权利要求7所述一种防腐高强度耐磨复合输送管的制备方法,其特征在于,步骤c中,挤出压强为1.6-1.8MPa。
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