CN108219241B - 一种具有自洁抗菌功能的给水管及其制备方法 - Google Patents

一种具有自洁抗菌功能的给水管及其制备方法 Download PDF

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CN108219241B
CN108219241B CN201711359485.3A CN201711359485A CN108219241B CN 108219241 B CN108219241 B CN 108219241B CN 201711359485 A CN201711359485 A CN 201711359485A CN 108219241 B CN108219241 B CN 108219241B
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刘奎
杨荣方
林强
刘哲
廖海艳
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Abstract

本发明公开了一种具有自洁抗菌功能的给水管及其制备方法,该给水管包括内层和外层,内层原料中添加1‑3wt%的纳米银、2‑5wt%的沸石粉和0.02‑0.1wt%的异噻唑啉酮。通过在给水管的内层材料中添加纳米银,其带正电荷,对带负电荷的细菌具有很好的抑制和杀灭作用,而且不会产生耐药性;添加沸石粉,其既能起到填充及增强的作用,而且具有吸附作用,净化水质,还能促进纳米银缓释;而添加异噻唑啉酮,其相对于纳米银更易于与塑料材料混合,避免了不易分散的问题,并且耐高温性能好,与纳米银共同发挥抑菌作用,通过无机抗菌剂和有机抗菌剂进行协同杀菌,效果更好,能够实现长效抗菌。

Description

一种具有自洁抗菌功能的给水管及其制备方法
技术领域
本发明属于给水管领域,具体涉及一种具有自洁抗菌功能的给水管及其制备方法。
背景技术
在现代城市供水系统中,高密度聚乙烯(简称HDPE)给水管因为强度高、耐腐蚀、无毒、安装便捷的优点被广泛应用。但是HDPE给水管在使用一段时间后,管材内壁通常会粘附一层粘稠状污垢,里面含有大量的大肠杆菌、金色葡萄球菌等细菌会直接危害人体健康,并为他们的繁殖提供温床。
发明内容
本发明的目的是提供一种具有自洁抗菌功能的给水管及其制备方法,可以解决自来水供水网中给水管容易结垢并滋生细菌的缺陷。
为解决上述技术问题,本发明所采用的技术方案是:一种具有自洁抗菌功能的给水管,包括内层和外层,内层原料中添加1-3wt%的纳米银、2-5wt%的沸石粉和0.02-0.1wt%的异噻唑啉酮。
优选的方案中,内层原料中添加2wt%的纳米银、3wt%的沸石粉和0.02wt%的异噻唑啉酮。
进一步地,所述内层原料中还添加有1-2wt%的凹凸棒土。
进一步地,内层和外层均采用HDPE材料制成,其中内层和外层的的原料包括按重量份计的以下成分:HDPE为65-75份、木质纤维素5-10份、碳酸钙5-10份、氯化聚乙烯1-3份、硅烷偶联剂1-3份及润滑剂1-2份。
进一步地,所述润滑剂为硬脂酸和/或石蜡。
进一步地,所述外层原料中还添加有黑色母1-2份、炭黑1-2份和抗氧剂BHT1-2份。
本发明还涉及制备所述给水管的方法,包括以下步骤:
按照配比分别称取给水管外层料和内层料,分别混合均匀,然后分别进行混炼,再进行内外层共挤成型,最后冷却即得到具有自洁抗菌功能的给水管。
进一步地,所述的混炼温度为160-180℃,共挤成型温度为180-190℃。
进一步地,所述纳米银、沸石粉和异噻唑啉酮在内层其他原料混合之后加入。
本发明具有以下有益效果:
1、通过在给水管的内层材料中添加纳米银、沸石粉和异噻唑啉酮,其中纳米银对大肠杆菌、淋球菌、沙眼衣原体等数十种致病微生物都有强烈的抑制和杀灭作用,而且不会产生耐药性,具有很好的抗菌作用;添加沸石粉,其既能起到填充及增强的作用,而且具有吸附作用,能够对水中的水中氨氮、有机物和重金属离子进行吸附,净化水质,还能促进纳米银缓释,确保纳米银的长效抗菌抑菌;而添加异噻唑啉酮,其相对于纳米银更易于与塑料材料混合,避免了不易分散的问题,并且耐高温性能好,与纳米银共同发挥抑菌作用,通过无机抗菌剂和有机抗菌剂进行协同杀菌,效果更好。增加的凹凸棒土,其具有增稠性能,而且能够抑制微生物生长,对水质进行净化。
2、给水管的内层和外层均以高密度聚乙烯作为主要原料,其具有优异的化学稳定性、耐老化及耐环境应力开裂的性能。通过加入木质纤维素、碳酸钙、氯化聚乙烯、硅烷偶联剂和润滑剂等助剂,进一步优化其性能。其中木质纤维素和碳酸钙作为增强剂,能降低体系的弹性模量,还能起到一定的填充作用,降低成本。木质纤维素具有毛细管结构,促进原料混合更为均匀,防止材料内部产生位移而出现破裂或者拉裂等。氯化聚乙烯作为增韧剂,降低脆性,增大韧性,提高承载强度;硅烷偶联剂改善原料的分散度以提高加工性能;润滑剂能够确保管道光滑,防止结垢。
3、给水管的外层原料添加黑色母、炭黑和抗氧剂BHT,其中黑色母和炭黑具有的抗紫外线能力,与抗氧剂BHT协同作用,有效抵御紫外线的侵蚀,抗老化,延长使用寿命。
具体实施方式
下面结合实施例来进一步说明本发明,实施例中未注明条件的实验方法通常按照常规条件。
实施例1:
一种具有自洁抗菌功能的给水管,包括内层和外层,按重量计,
内层原料为:HDPE为65份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂1份、及润滑剂2份、纳米银1份、沸石粉4份和异噻唑啉酮0.02份。
外层原料为:HDPE为65份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂1份、及润滑剂2份。
按照配比分别称取给水管外层料和内层料,分别混合均匀,然后分别进行混炼,混炼温度为160-180℃,再进行内外层共挤成型,共挤成型温度为180-190℃,最后冷却即得到具有自洁抗菌功能的给水管。
实施例2:
一种具有自洁抗菌功能的给水管,包括内层和外层,按重量计,
内层原料为:HDPE为70份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂2份及硬脂酸润滑剂1份、纳米银2份、沸石粉3份和异噻唑啉酮0.02份。
外层原料为:HDPE为70份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂2份及硬脂酸润滑剂1份。
制备时,按照配比分别称取给水管外层料和内层料,分别混合均匀,然后分别进行混炼,混炼温度为160-180℃,再进行内外层共挤成型,共挤成型温度为180-190℃,最后冷却即得到具有自洁抗菌功能的给水管。
实施例3:除内层材料中还加入凹凸棒土2份;其余同实施例2。
实施例4:除外层材料中还加入了黑色母2份、炭黑2份和抗氧剂BHT2份;其余同实施例2。
对比例1:
一种具有自洁抗菌功能的给水管,包括内层和外层,按重量计,
内层原料为:HDPE为70份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂2份及硬脂酸润滑剂1份和纳米银2份。
外层原料为:HDPE为70份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂2份及硬脂酸润滑剂1份。
对比例2:
一种具有自洁抗菌功能的给水管,包括内层和外层,按重量计,
内层原料为:HDPE为70份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂2份及硬脂酸润滑剂1份、纳米银2份和沸石粉3份。
外层原料为:HDPE为70份、木质纤维素10份、碳酸钙10份、氯化聚乙烯2份、硅烷偶联剂2份及硬脂酸润滑剂1份。
对实施例1-4及对比例1-2中得到的给水管进行测试,其抗菌结果如下表1。
表1
Figure BDA0001511579190000031
Figure BDA0001511579190000041

Claims (6)

1.一种具有自洁抗菌功能的给水管, 其特征在于:包括内层和外层,内层和外层均采用HDPE材料制成,其中内层和外层的的原料包括按重量份计的以下成分:HDPE 65-75份、木质纤维素5-10份、碳酸钙5-10份、氯化聚乙烯1-3份、硅烷偶联剂1-3份及润滑剂1-2份;内层原料中还添加1-3wt%的纳米银、2-5wt%的沸石粉、0.02-0.1wt%的异噻唑啉酮和1-2 wt%的凹凸棒土;外层原料中还添加有黑色母1-2份、炭黑1-2份和抗氧剂BHT1-2份。
2.根据权利要求1所述的给水管, 其特征在于:内层原料中添加2wt%的纳米银、3wt%的沸石粉和0.02wt%的异噻唑啉酮。
3.根据权利要求1所述的给水管,其特征在于:所述润滑剂为硬脂酸和/或石蜡。
4.制备权利要求1-3任意一项所述给水管的方法,其特征在于,包括以下步骤:
按照配比分别称取给水管外层料和内层料,分别混合均匀,然后分别进行混炼,再进行内外层共挤成型,最后冷却即得到具有自洁抗菌功能的给水管。
5.根据权利要求4所述的方法,其特征在于:所述的混炼温度为160-180℃,共挤成型温度为180-190℃。
6.根据权利要求4所述的方法,其特征在于:所述纳米银、沸石粉和异噻唑啉酮在内层其他原料混合之后加入。
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