CN110735997A - 一种抗菌耐腐蚀球墨铸管及制造工艺 - Google Patents
一种抗菌耐腐蚀球墨铸管及制造工艺 Download PDFInfo
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Abstract
一种抗菌耐腐蚀球墨铸管，其特征在于：包括管道层、聚乙烯层、过渡层、耐磨层，其中聚乙烯层覆于管道层内部，聚乙烯层上涂布有过渡层，耐磨层通过过渡层与聚乙烯层连接。有益效果是解决目前球墨铸管安装不便、耐腐蚀性差、污染水质、易产生细菌的问题。
Description
技术领域
本发明属于管道技术领域，具体的涉及一种抗菌耐腐蚀球墨铸管。
背景技术
近年来，球墨铸铁管在输水领域被广泛的推广开来，广泛用于南水北调等大型输水项目中。为了进一步延长铸铁管寿命，需要在其内壁涂衬水泥砂浆。水泥砂浆内衬对铸铁管具有好的防腐性能，属于主动防腐，但是由于其固有的碱性特征，使其在管道，尤其小口径管道的输水初期引起水质的pH值升高、铝离子含量的升高，影响水质的卫生性能。使用水泥砂浆内衬作为饮用水输水管道，由于内壁不光滑，水流阻力大，且易结垢，容易产生细菌，水泥硬化产生的反应物质影响水质，内衬厚度较大，达到3-12mm，输水效率较低，水泥内衬导致整个管体重量增大，不利于施工安装，并且水泥内衬加工不方便，附着力差，施工安装过程中的冲击和管材变形容易造成水泥脱落。
水泥需要在一定的温度及湿度下进行养护使之达到所需的抗压强度。管件内壁水泥在未养护之前不能发生二次移动，否则会造成未养护的管件内壁水泥由于晃动及碰撞导致脱落疏松，影响产品质量。
发明内容
本发明的主要目的在于提供一种抗菌耐腐蚀球墨铸管及制造工艺，解决目前球墨铸管安装不便、耐腐蚀性差、污染水质、易产生细菌的问题。
为了实现上述技术效果，本发明采用如下技术方案：
一种抗菌耐腐蚀球墨铸管，包括管道层、聚乙烯层、过渡层、耐磨层。所述聚乙烯层覆于管道层内部，聚乙烯层上涂布有过渡层，耐磨层通过过渡层与聚乙烯层连接。
所述聚乙烯层厚度为1mm-4mm，包括以下组分：聚乙烯树脂粉85％-90％重量份，硅藻土10％-15％；其中聚乙烯树脂粉粒径为30-50目，分子量为18万-26万；硅藻土粒径为10-30微米；聚乙烯层能够防止管道层的腐蚀，其中加入硅藻土，利用其吸附性能，能够进一步减少铁中的水分，减少管道层的腐蚀。
所述过渡层为聚醚型聚氨酯，具有较好的耐水解，防止水分子的通过，且能够连接聚乙烯层与耐磨层，避免聚乙烯层与耐磨层直接连接因收缩率、材料结合性差产生分层现象。
所述耐磨层包括以下组分：环氧树脂79-88重量份、甲壳素1-2重量份、硅粉10-16重量份、固化剂0.5-1.5重量份、消泡剂0.5-1.5重量份；耐磨层中加入硅粉能够提高环氧树脂的耐磨性，甲壳素具有抗菌性，能够抑制细菌的产生。
上述抗菌耐腐蚀球墨铸管制造工艺为：步骤(1)将聚乙烯树脂粉、硅藻土混合后，通过火焰喷涂，涂在管道层内侧，喷涂温度为600℃-630℃；步骤(2)将聚醚型聚氨酯乳液涂布于聚乙烯层表面，通入热空气进行固化得到过渡层，固化温度为80℃-90℃，风速2-5米/秒，涂层厚度30-50微米；步骤(3)将环氧树脂、甲壳素、硅粉、固化剂、消泡剂混合均匀，涂布于过渡层表面，通入热空气进行固化，固化温度为80℃-100℃，涂布厚度为4-8mm。
本发明的有益效果是：(1)本发明的结构简单、造价低，易于推广使用。
(2)本发明球墨铸管重量轻，易于安装，耐磨性好，且能够抑制细菌，对水质影响小。
附图说明
图1是抗菌耐腐蚀球墨铸管截面图；
其中：1、管道层；2、聚乙烯层；3、过渡层；4、耐磨层。
具体实施方式
为了进一步理解本发明，下面结合实施例对本发明提供的技术方案进行详细说明，本发明的保护范围不受以下实施例的限制。
实施例1
一种抗菌耐腐蚀球墨铸管，包括管道层1、聚乙烯层2、过渡层3、耐磨层4。所述聚乙烯层2覆于管道层1内部，聚乙烯层2上涂布有过渡层3，耐磨层4通过过渡层3与聚乙烯层2连接。
所述聚乙烯层2厚度为1mm，包括以下组分：聚乙烯树脂粉85％重量份，硅藻土15％。
所述过渡层3为聚醚型聚氨酯。
所述耐磨层4包括以下组分：环氧树脂79重量份、甲壳素2重量份、硅粉16重量份、固化剂1.5重量份、消泡剂1.5重量份。
上述抗菌耐腐蚀球墨铸管制造工艺为：步骤(1)将聚乙烯树脂粉、硅藻土混合后，通过火焰喷涂，涂在管道层1内侧，喷涂温度为600℃；步骤(2)将聚醚型聚氨酯乳液涂布于聚乙烯层2表面，通入热空气进行固化得到过渡层3，固化温度为80℃，风速2米/秒，涂层厚度30微米；步骤(3)将环氧树脂、甲壳素、硅粉、固化剂、消泡剂混合均匀，涂布于过渡层3表面，通入热空气进行固化，固化温度为80℃，涂布厚度为4mm。
实施例2
一种抗菌耐腐蚀球墨铸管，包括管道层1、聚乙烯层2、过渡层3、耐磨层4。所述聚乙烯层2覆于管道层1内部，聚乙烯层2上涂布有过渡层3，耐磨层4通过过渡层3与聚乙烯层2连接。
所述聚乙烯层2厚度为4mm，包括以下组分：聚乙烯树脂粉90％重量份，硅藻土15％。
所述过渡层3为聚醚型聚氨酯。
所述耐磨层4包括以下组分：环氧树脂88重量份、甲壳素1重量份、硅粉10重量份、固化剂0.5重量份、消泡剂0.5重量份。
上述抗菌耐腐蚀球墨铸管制造工艺为：步骤(1)将聚乙烯树脂粉、硅藻土混合后，通过火焰喷涂，涂在管道层1内侧，喷涂温度为630℃；步骤(2)将聚醚型聚氨酯乳液涂布于聚乙烯层2表面，通入热空气进行固化得到过渡层3，固化温度为90℃，风速5米/秒，涂层厚度50微米；步骤(3)将环氧树脂、甲壳素、硅粉、固化剂、消泡剂混合均匀，涂布于过渡层3表面，通入热空气进行固化，固化温度为100℃，涂布厚度为8mm。
实施例3
一种抗菌耐腐蚀球墨铸管，包括管道层1、聚乙烯层2、过渡层3、耐磨层4。所述聚乙烯层2覆于管道层1内部，聚乙烯层2上涂布有过渡层3，耐磨层4通过过渡层3与聚乙烯层2连接。
所述聚乙烯层2厚度为3mm，包括以下组分：聚乙烯树脂粉88％重量份，硅藻土12％。
所述过渡层3为聚醚型聚氨酯。
所述耐磨层4包括以下组分：环氧树脂83重量份、甲壳素1.5重量份、硅粉13.5重量份、固化剂1重量份、消泡剂1重量份。
上述抗菌耐腐蚀球墨铸管制造工艺为：步骤(1)将聚乙烯树脂粉、硅藻土混合后，通过火焰喷涂，涂在管道层1内侧，喷涂温度为620℃；步骤(2)将聚醚型聚氨酯乳液涂布于聚乙烯层2表面，通入热空气进行固化得到过渡层3，固化温度为85℃，风速4米/秒，涂层厚度40微米；步骤(3)将环氧树脂、甲壳素、硅粉、固化剂、消泡剂混合均匀，涂布于过渡层3表面，通入热空气进行固化，固化温度为95℃，涂布厚度为6mm。
以上显示和描述了本发明的基本原理、主要特征和优点。本领域的普通技术人员应该了解，上述实施例不以任何形式限制本发明的保护范围，凡采用等同替换等方式所获得的技术方案，均落于本发明的保护范围内。
Claims (5)
1.一种抗菌耐腐蚀球墨铸管，其特征在于：包括管道层(1)、聚乙烯层(2)、过渡层(3)、耐磨层(4)，其中聚乙烯层覆于管道层(1)内部，聚乙烯层(2)上涂布有过渡层(3)，耐磨层(4)通过过渡层(3)与聚乙烯层(2)连接。
2.根据权利要求1所述的一种抗菌耐腐蚀球墨铸管，其特征在于：所述聚乙烯层(2)厚度为1mm-4mm，包括以下组分：聚乙烯树脂粉85％-90％重量份，硅藻土10％-15％；其中聚乙烯树脂粉粒径为30-50目，分子量为18万-26万；硅藻土粒径为10-30微米。
3.根据权利要求1所述的一种抗菌耐腐蚀球墨铸管，其特征在于：所述过渡层(3)为聚醚型聚氨酯。
4.根据权利要求1所述的一种抗菌耐腐蚀球墨铸管，其特征在于：所述耐磨层(4)包括以下组分：环氧树脂79-88重量份、甲壳素1-2重量份、硅粉10-16重量份、固化剂0.5-1.5重量份、消泡剂0.5-1.5重量份。
5.根据权利要求1-5任意一项所述的一种抗菌耐腐蚀球墨铸管的制造工艺，其特征在于：包括以下步骤，步骤(1)将聚乙烯树脂粉、硅藻土混合后，通过火焰喷涂，涂在管道层(1)内侧，喷涂温度为600℃-630℃；步骤(2)将聚醚型聚氨酯乳液涂布于聚乙烯层(2)表面，通入热空气进行固化得到过渡层(3)，固化温度为80℃-90℃，风速2-5米/秒，涂层厚度30-50微米；步骤(3)将环氧树脂、甲壳素、硅粉、固化剂、消泡剂混合均匀，涂布于过渡层(3)表面，通入热空气进行固化，固化温度为80℃-100℃，涂布厚度为4-8mm。
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