CN104653884B - 一种抗菌复合给水管及其制备方法 - Google Patents
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Abstract
本发明提供了一种抗菌复合给水管及其制备方法,所述抗菌复合给水管由抗菌PPR内层、PPR中间层和PE外层组成,所述抗菌PPR内层中加入纳米氧化铝,所述PE外层中加入乙烯‑醋酸乙烯共聚物抗冲击改质剂,所述抗菌复合给水管三层的厚度从厚到薄依次为PPR中间层、抗菌PPR内层、PE外层。所述抗菌复合给水管具有纳米氧化铝和深色母料双重抗菌效果,且具有良好的结构强度和抗冲击性。所述抗菌复合给水管通过三复合挤出机一次共同挤出成型,制备工艺简单合理。
Description
技术领域
本发明涉及一种建筑管材,特别涉及一种抗菌复合给水管及其制备方法。
背景技术
PPR管以质量轻、耐腐蚀、安装方便等优点成为目前家装工程中采用最多的一种供水管道。常规的PPR管在经过长期使用后,积累的水垢杂质附着在管道内部,会滋生微生物,当管道中水流较慢或停流时,微生物将演变成细菌,附着在管壁内经过一段时间的繁殖会形成菌群,使水质下降,直接影响人们的生活质量。另,现有的PPR管材的外观为白色的单层结构,在阳光直射条件下,PPR管内容易滋生青苔,影响水质。公开号为CN201110285139的中国专利公开了一种聚乙烯抗菌三层复合管,其中抗菌三层复合管均采用PPR材料,内层原料中加入纳米银离子抗菌剂,中层原料中加入短玻纤,外层加入了受阻酚类抗氧化剂,虽然通过纳米银离子抗菌剂达到了抗菌效果,通过短玻纤提高了管体的抗拉强度和静压强度,但增大了管体的脆性,通过受阻酚类抗氧化剂提高了管体的抗氧化性,但在遮光性方面仍有待提高。
发明内容
本发明所要解决的技术问题是提供一种遮光且抗冲击性好的抗菌复合给水管及其制备方法。
为了解决上述技术问题,本发明采用的技术方案为提供了一种抗菌复合给水管,所述抗菌复合给水管由抗菌PPR内层、PPR中间层和PE外层组成,其中抗菌PPR内层所用材料的原料及重量份配比如下:
PPR原料 100份;
色母料 1-5份;
纳米氧化铝母料 1-20份;
PPR中间层所用材料的原料及重量份配比如下:
PPR原料 100份;
色母料 1-5份;
PE外层所用材料的原料及重量份配比如下:
PE原料 100份;
乙烯-醋酸乙烯共聚物 4~20份;
深色母料 1-5份。
本发明的有益效果在于提供的抗菌复合给水管,抗菌PPR内层含有纳米氧化铝,具有良好的抗菌效果,PPR中间层采用PPR原料具有良好的结构强度和刚度,PE外层中含有乙烯-醋酸乙烯共聚物抗冲击改质剂和深色母料,分散性、相溶性和流变性能好,具有良好的抗冲击性和遮光性,可提高产品光泽度。
一种所述的抗菌复合给水管的制备方法,具体步骤如下:
(1)备料:将抗菌PPR内层、PPR中间层和PE外层三层原料分别按重量份配比称量后进入高速混合机中混合,经冷却后分别放入三复合挤出机的三个料斗中;
(2)挤出:在三复合挤出机中将抗菌PPR内层、PPR中间层和PE外层三层管材共同挤出成型,其中抗菌PPR内层挤出机模具温度设置为140~260℃,PPR中间层挤出机模具温度设置为140~260℃,PE外层挤出机模具温度设置为140~240℃;
(3)定型:将挤出的包含抗菌PPR内层、PPR中间层和PE外层三层的抗菌复合给水管送入真空定型机中定型;
(4)冷却:将定型后的抗菌复合给水管放在空气中冷却至25℃以下;
(5)牵引:将抗菌复合给水管放入牵引机中牵引。
本发明的有益效果在于提供的抗菌复合给水管的制备方法,利用三复合挤出机将包含抗菌PPR内层、PPR中间层和PE外层三层的抗菌复合给水管共同挤出成型,制造工艺简单方便,合理调节各层的挤出机模具温度,可使抗菌PPR内层、PPR中间层和PE外层三层中相邻层之间结合比较紧密,且产品表面光滑性较好。
附图说明
图1为本发明实施例的抗菌复合给水管的截面示意图。
标号说明:
1、PE外层;2、PPR中间层;3、抗菌PPR内层。
具体实施方式
为详细说明本发明的技术内容、所实现目的及效果,以下结合实施方式并配合附图予以说明。
本发明最关键的构思在于将抗菌复合给水管分为三层,内层采用加入纳米抗菌剂的PPR管材,中间层采用PPR材料,外层采用添加抗冲击改质剂和深色母料的PE管材,在达到给水管抗菌的同时,达到强的遮光效果及耐冲击性能,最后将抗菌复合给水管通过三复合挤出机共同挤出成型。
请参照图1,本发明提供了一种抗菌复合给水管,所述抗菌复合给水管由抗菌PPR内层3、PPR中间层2和PE外层1组成,其中抗菌PPR内层3所用材料的原料及重量份配比如下:
PPR原料 100份;
色母料 1-5份;
纳米氧化铝母料 1-20份;
PPR中间层2所用材料的原料及重量份配比如下:
PPR原料 100份;
色母料 1-5份;
PE外层1所用材料的原料及重量份配比如下:
PE原料 100份;
乙烯-醋酸乙烯共聚物 4~20份;
深色母料 1-5份。
从上述描述可知,本发明的有益效果在于提供的抗菌复合给水管,抗菌PPR内层3含有纳米氧化铝,具有良好的抗菌效果,PPR中间层2采用PPR原料具有良好的结构强度和刚度,PE外层1中含有乙烯-醋酸乙烯共聚物抗冲击改质剂和深色母料,分散性、相溶性和流变性能好,具有良好的抗冲击性和遮光性,可提高产品光泽度。
进一步的,所述抗菌PPR内层3厚度为整体管壁厚的3~20%,所述PPR中间层2厚度为整体管壁厚的60~90%,所述PE外层1厚度为整体管壁厚的7~20%。
由上述描述可知,本发明提供的抗菌复合给水管,抗菌PPR内层3、PPR中间层2和PE外层1三者的厚度从厚到薄依次为PPR中间层2、抗菌PPR内层3、PE外层1,给水管结构强度的支撑主要还是依靠抗菌PPR内层3、PPR中间层2中的PPR材料,抗菌PPR内层3可使给水管具有抗菌效果,保证给水管中的水质安全性,抗菌PPR内层3与PPR中间层2分开,可达到节约纳米抗菌材料,节省成本的效果,PE外层1中加入乙烯-醋酸乙烯共聚物抗冲击改质剂,可起到抗冲击作用,保证给水管的耐冲击性,防止给水管脆性开裂。
进一步的,所述抗菌PPR内层3中色母料的重量份为2~4份。
进一步的,所述PPR中间层2中色母料的重量份为2~4份。
进一步的,所述PE外层1中深色母料的重量份为2~4份。
进一步的,所述抗菌PPR内层3中纳米氧化铝母料的重量份为8~12份。
由上述描述可知,本发明提供的抗菌复合给水管,深色母料可起到遮光的作用,避免给水管被阳光长期直射滋生细菌,色母料可调节给水管的颜色,改善给水管的分散性及色泽;纳米氧化铝具有高活性、耐高温的惰性、硬度高、尺寸稳定性好、抗蠕变性好等特点,具有良好的结构强度和抗菌效果。
一种所述的抗菌复合给水管的制备方法,具体步骤如下:
(1)备料:将抗菌PPR内层3、PPR中间层2和PE外层1三层原料分别按重量份配比称量后进入高速混合机中混合,经冷却后分别放入三复合挤出机的三个料斗中;
(2)挤出:在三复合挤出机中将抗菌PPR内层3、PPR中间层2和PE外层1三层管材共同挤出成型,其中抗菌PPR内层3挤出机模具温度设置为140~260℃,PPR中间层2挤出机模具温度设置为140~260℃,PE外层1挤出机模具温度设置为140~240℃;
(3)定型:将挤出的抗菌PPR内层3、PPR中间层2和PE外层1三层的抗菌复合给水管送入真空定型机中定型;
(4)冷却:将定型后的抗菌复合给水管放在空气中冷却至25℃以下;
(5)牵引:将抗菌复合给水管放入牵引机中牵引。
从上述描述可知,本发明的有益效果在于提供的抗菌复合给水管的制备方法,利用三复合挤出机将包含抗菌PPR内层3、PPR中间层2和PE外层1三层的抗菌复合给水管共同挤出成型,制造工艺简单方便,合理调节各层的挤出机模具温度,可使抗菌PPR内层3、PPR中间层2和PE外层1三层中相邻层之间结合比较紧密,且产品表面光滑性较好。
进一步的,所述抗菌PPR内层3挤出机模具温度设置为160~210℃。
进一步的,所述PPR中间层2挤出机模具温度设置为170~230℃。
进一步的,所述PE外层1挤出机模具温度设置为160~205℃。
由上述描述可知,本发明提供的抗菌复合给水管的制备方法,所述三复合挤出机各层对应的挤出机模具温度设置在上述范围内时得到的抗菌PPR内层3、PPR中间层2和PE外层1各层中原料混合比较均匀、分散性和流动性较好。
请参照图1,本发明的实施例一为:
抗菌复合给水管型号规格为:S3.2系列,外径为25mm,壁厚为3.5mm。
抗菌复合给水管管材为:
抗菌PPR内层3所用材料的原料及重量份配比如下:
PPR原料 100份;
白色母料 3份;
纳米氧化铝母料 10份;
PPR中间层2所用材料的原料及重量份配比如下:
PPR原料 100份;
白色母料 3份;
PE外层1所用材料的原料及重量份配比如下:
PE原料 100份;
乙烯-醋酸乙烯共聚物 15份;
蓝色母料 3份。
抗菌PPR内层3厚度为0.3~0.5mm,PPR中间层2厚度为2.42.8mm,PE外层1厚度为0.4~0.6mm。
抗菌复合给水管用三复合挤出机共同挤出成型,各层挤出机工艺温度设置见表1:
表1
各层挤出机 | 机筒温度 | 模具温度 | 模口温度 |
抗菌PPR内层挤出机 | 160-180℃ | 180-200℃ | 210℃ |
PPR中间层挤出机 | 170-185℃ | 190-210℃ | 230℃ |
PE外层挤出机 | 160-180℃ | 180-200℃ | 205℃ |
经三复合挤出机挤出的料在共混室中的共混温度控制在65℃,共混时间为15分钟。
经三复合挤出机挤出成型的抗菌复合给水管经定型、冷却、牵引后可用于加工装配。
本发明的对比例一为:
普通PPR给水管型号规格为:S3.2系列,外径为25mm,壁厚为3.5mm。
普通PPR给水管采用单层挤出成型,所用管材原料及重量份配比如下:
PPR原料 100份;
白色母料 3份。
普通PPR给水管生产用挤出机工艺温度设置见表2:
表2
挤出机 | 机筒温度 | 模具温度 | 模口温度 |
普通PPR给水管用挤出机 | 170-185℃ | 190-210℃ | 230℃ |
经挤出机挤出后的料在共混室中的共混温度控制在65℃,共混时间为15分钟。
经挤出机挤出成型的普通PPR给水管经定型、冷却、牵引后可用于加工装配。
将本发明实施例一得到的抗菌复合给水管与对比例一得到的普通PPR给水管的产品性能进行比对:
对本发明实施例一与对比例一得到的产品分别做透光性试验、简支梁冲击试验、20℃静液压试验、95℃静液压试验、纵向回缩率及静置绿苔性能比较,其中各试验的试验条件如下:
(1)简支梁冲击试验条件:
用简支梁冲击试验机分别测试抗菌复合给水管与普通PPR给水管的抗冲击性能,其中试验温度均为0℃,冲击能量均为15J。
(2)20℃静液压试验条件:
在温度为20℃,环应力16MPa条件下分别将抗菌复合给水管与普通PPR给水管静置1h,观察抗菌复合给水管与普通PPR给水管在20℃时承受静液压的能力。
(3)95℃静液压试验条件:
在温度为95℃,环应力4.2MPa条件下分别将抗菌复合给水管与普通PPR给水管静置22h,观察抗菌复合给水管与普通PPR给水管在95℃时承受静液压的能力。
(4)静置绿苔试验条件:
分别在抗菌复合给水管与普通PPR给水管中装满自来水,并用自然光照射15天,然后将抗菌复合给水管与普通PPR给水管中的水倒出,观察两种给水管内壁是否有绿苔产生。
实施例一与对比例一得到的产品性能对比见表3:
表3
试验项目 | 对比例一 | 实施例一 |
透光性 | 透光 | 不透光 |
简支梁冲击试验 | 18/20通过 | 20/20通过 |
20℃静液压试验 | 通过 | 通过 |
95℃静液压试验 | 通过 | 通过 |
纵向回缩率 | 0.7% | 0.8% |
长期静置 | 产生少量绿苔 | 无绿苔 |
通过上述试验数据得出,本发明的实施例一的抗菌复合给水管比对比例一的普通PPR给水管具有更好的不透光性、抗冲击性及抗菌性。
综上所述,本发明提供的抗菌复合给水管及其制备方法,抗菌PPR内层3和PPR中间层2主要采用PPR材料,使管材具有良好的结构强度和刚度,在PE外层1中加入乙烯-醋酸乙烯共聚物抗冲击改质剂,使给水管具有良好的抗冲击性;在抗菌PPR内层3内加入纳米氧化铝,在PE外层1中加入了深色母料,使给水管具有双重的抗菌效果;利用三复合挤出机将包含抗菌PPR内层3、PPR中间层2和PE外层1三层的抗菌复合给水管共同挤出成型,合理调节各层的挤出机模具温度,制造工艺简单方便,抗菌PPR内层3、PPR中间层2和PE外层1三层中相邻层之间结合比较紧密,且产品表面光滑性较好。
以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等同变换,或直接或间接运用在相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (10)
1.一种抗菌复合给水管,其特征在于,所述抗菌复合给水管由抗菌PPR内层、PPR中间层和PE外层组成,其中抗菌PPR内层所用材料的原料及重量份配比如下:
PPR原料 100份;
色母料 1-5份;
纳米氧化铝母料 1-20份;
PPR中间层所用材料的原料及重量份配比如下:
PPR原料 100份;
色母料 1-5份;
PE外层所用材料的原料及重量份配比如下:
PE原料 100份;
乙烯-醋酸乙烯共聚物 4~20份;
深色母料 1-5份。
2.根据权利要求1所述的抗菌复合给水管,其特征在于,所述抗菌PPR内层厚度为整体管壁厚的3~20%,所述PPR中间层厚度为整体管壁厚的60~90%,所述PE外层厚度为整体管壁厚的7~20%。
3.根据权利要求1所述的抗菌复合给水管,其特征在于,所述抗菌PPR内层中色母料的重量份为2~4份。
4.根据权利要求1所述的抗菌复合给水管,其特征在于,所述PPR中间层中色母料的重量份为2~4份。
5.根据权利要求1所述的抗菌复合给水管,其特征在于,所述PE外层中色母料的重量份为2~4份。
6.根据权利要求1所述的抗菌复合给水管,其特征在于,所述抗菌PPR内层中纳米氧化铝母料的重量份为8~12份。
7.一种根据权利要求1所述的抗菌复合给水管的制备方法,其特征在于,具体步骤如下:
(1)备料:将抗菌PPR内层、PPR中间层和PE外层三层原料分别按重量份配比称量后进入高速混合机中混合,经冷却后分别放入三复合挤出机的三个料斗中;
(2)挤出:在三复合挤出机中将抗菌PPR内层、PPR中间层和PE外层三层管材共同挤出成型,其中抗菌PPR内层挤出机模具温度设置为140~260℃,PPR中间层挤出机模具温度设置为140~260℃,PE外层挤出机模具温度设置为140~240℃;
(3)定型:将挤出的包含抗菌PPR内层、PPR中间层和PE外层三层的抗菌复合给水管送入真空定型机中定型;
(4)冷却:将定型后的抗菌复合给水管放在空气中冷却至25℃以下;
(5)牵引:将抗菌复合给水管放入牵引机中牵引。
8.根据权利要求7所述的抗菌复合给水管的制备方法,其特征在于,所述抗菌PPR内层挤出机模具温度设置为160~210℃。
9.根据权利要求7所述的抗菌复合给水管的制备方法,其特征在于,所述PPR中间层挤出机模具温度设置为170~230℃。
10.根据权利要求7所述的抗菌复合给水管的制备方法,其特征在于,所述PE外层挤出机模具温度设置为160~205℃。
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