CN114803168A - 一种发泡三重层储罐及其应用 - Google Patents
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Abstract
本发明公开了一种发泡三重层储罐，从内到外依次包括内衬层、发泡层、保护层，所述保护层的原料包括钢材和/或聚乙烯。本发明采用滚塑成型法将钢材、龟甲钢网、聚乙烯材料结合成一体，具有无焊接缝、不渗漏、无毒性、抗冲击、耐腐蚀、耐高温、耐磨损的特点，与其它工艺相比，同等重量下，刚性大幅提升30％，此外加入一定的抗老化剂和紫外线吸收剂提升了储罐的抗老化性使用寿命，可应用于工业用冷却水、稀土、环保工程、化工、冶金、农药、油品、饮品的储存和运输。
Description
技术领域
本发明涉及钢衬塑储罐技术领域，具体涉及一种发泡三重层储罐及其应用。
背景技术
储罐作为一种储存物质的容器，尤其是化学液体的储藏，需要配备耐腐耐蚀的塑料材质的储罐，因此全塑储罐得到了广泛的应用，但是目前全塑储罐普遍存在一些缺陷，如全塑储罐的刚性较差，不耐压、耐温性能较差等，在运输的过程中由于储存液体会对罐壁产生一定的压强，由于全塑产品材料长期受压后产生蠕变而使得罐体膨胀变形，因此存在储罐泄漏、甚至破裂的风险。
发明内容
针对上述背景技术中的不足，本发明一方面提供了一种发泡三重层储罐，从内到外依次包括内衬层、发泡层、保护层，所述保护层的原料包括钢材和/或聚乙烯。
作为一种优选的技术方案，所述聚乙烯包括线性低密度聚乙烯。
作为一种优选的技术方案，所述线性低密度聚乙烯的密度为0.910～0.941g/cm3，熔体流动速率为0.3-0.8g/min。
作为一种优选的技术方案，所述保护层的原料还包括抗老化剂和紫外线吸收剂，且二者的重量比为1：(0.8-1.2)。
作为一种优选的技术方案，所述抗老化剂的加入量为聚乙烯的0.01-0.1wt％，所述紫外线吸收剂的加入量为聚乙烯的0.01-0.1wt％。
作为一种优选的技术方案，所述发泡层为龟甲钢网，所述龟甲钢网的孔距为1-6cm，网厚1-2.5cm。
作为一种优选的技术方案，所述内衬层的原料为高密度聚乙烯。
作为一种优选的技术方案，所述高密度聚乙烯的软化点为120-140℃，密度为0.945-0.976g/cm3。
作为一种优选的技术方案，所述储罐的罐体采用滚塑成型法制备而成。
作为一种优选的技术方案，本发明的另一方面提供了一种发泡三重层储罐在储存和运输中的应用。
有益效果：本发明采用滚塑成型法将钢材、龟甲钢网、聚乙烯材料结合成一体，具有无焊接缝、不渗漏、无毒性、抗冲击、耐腐蚀、耐高温、耐磨损的特点，与其它工艺相比，同等重量下，刚性大幅提升30％，此外加入一定的抗老化剂和紫外线吸收剂提升了储罐的抗老化性使用寿命，可应用于工业用冷却水、稀土、环保工程、化工、冶金、农药、油品、饮品的储存和运输。
附图说明
图1是本发明的发泡三重层储罐的截面示意图。
具体实施方式
结合以下本发明的优选实施方法的详述以及包括的实施例可进一步地理解本发明的内容。除非另有说明，本文中使用的所有技术及科学术语均具有与本发明所属领域普通技术人员的通常理解相同的含义。如果现有技术中披露的具体术语的定义与本发明中提供的任何定义不一致，则以本发明中提供的术语定义为准。
在本文中使用的，除非上下文中明确地另有指示，否则没有限定单复数形式的特征也意在包括复数形式的特征。还应理解的是，如本文所用术语“由…制备”与“包含”同义，“包括”、“包括有”、“具有”、“包含”和/或“包含有”，当在本说明书中使用时表示所陈述的组合物、步骤、方法、制品或装置，但不排除存在或添加一个或多个其它组合物、步骤、方法、制品或装置。此外，当描述本发明的实施方式时，使用“优选的”、“优选地”、“更优选的”等是指，在某些情况下可提供某些有益效果的本发明实施方案。然而，在相同的情况下或其他情况下，其他实施方案也可能是优选的。除此之外，对一个或多个优选实施方案的表述并不暗示其他实施方案不可用，也并非旨在将其他实施方案排除在本发明的范围之外。
为了实现上述目的，本发明一方面提供了一种发泡三重层储罐，从内到外依次包括内衬层、发泡层、保护层，所述保护层的原料包括钢材和/或聚乙烯。
优选的，所述保护层的原料包括钢材和聚乙烯。
在一些优选的实施方式中，所述聚乙烯包括线性低密度聚乙烯。
在一些优选的实施方式中，所述线性低密度聚乙烯的密度为0.910～0.941g/cm3，熔体流动速率为0.3-0.8g/min。
优选的，所述线性低密度聚乙烯的密度为0.918～0.938g/cm3，熔体流动速率为0.4-0.6g/min。
更加优选的，所述线性低密度聚乙烯的密度为0.936g/cm3，熔体流动速率为0.5g/min。
其中，熔体流动速率是按照ASTM D-1238标准进行测试。
进一步优选的，所述线性低密度聚乙烯的牌号为乐天化学UR644。
在一些优选的实施方式中，所述保护层的原料还包括抗老化剂和紫外线吸收剂，且二者的重量比为1：(0.8-1.2)。
优选的，所述保护层的原料还包括抗老化剂和紫外线吸收剂，且二者的重量比为1：1。
在一些优选的实施方式中，所述抗老化剂的加入量为聚乙烯的0.01-0.1wt％，所述紫外线吸收剂的加入量为聚乙烯的0.01-0.1wt％。
优选的，所述抗老化剂的加入量为聚乙烯的0.05wt％，所述紫外线吸收剂的加入量为聚乙烯的0.05wt％。
优选的，所述抗老化剂包括三(2,4-二叔丁基苯基)亚磷酸酯、双(2，4-二叔丁基苯基)季戊四醇二亚磷酸酯、β-(3,5-二叔丁基-4-羟基苯基)丙酸十八碳醇酯、β-(3，5-二叔丁基-4-羟基苯基)丙酸]季戊四醇酯中的一种或多种。
优选的，所述紫外线吸收剂包括紫外线吸收剂U-V531、紫外线吸收剂UV 9、紫外线吸收剂U-VP、紫外线吸收剂U-V324、紫外线吸收剂U-V320、紫外线吸收剂U-V326、紫外线吸收剂U-V328、紫外线吸收剂U-V327、紫外线吸收剂UV329或紫外线吸收剂U-V360中的至少一种。
在一些优选的实施方式中，所述发泡层为龟甲钢网，所述龟甲钢网的孔距为1-6cm，网厚1-2.5cm。
优选的，所述龟甲钢网的孔距为2-4cm，网厚1.5-2cm。
更加优选的，所述龟甲钢网的孔距为3cm，网厚1.8cm。
在一些优选的实施方式中，所述内衬层的原料为高密度聚乙烯。
在一些优选的实施方式中，所述高密度聚乙烯的软化点为120-140℃，密度为0.945-0.976g/cm3。
优选的，所述高密度聚乙烯的软化点为125-135℃，密度为0.964g/cm3。
更加优选的，所述高密度聚乙烯购自乐天化学，牌号为5200BH。
在一些优选的实施方式中，所述储罐的罐体采用滚塑成型法制备而成。
申请人在研究中发现，采用滚塑成型法将钢材、线性低密度聚乙烯、龟甲钢网以及高密度聚乙烯有机结合成一体得到的罐体，具有无缝焊接的特点，故不会发生渗漏的现象，此外采用密度为0.918～0.938g/cm3和熔体流动速率为0.4-0.6g/min的线性低密度聚乙烯和钢材作为保护层，不仅使得保护层具有优异的刚性，同时还具有较好的韧性，申请人认为可能是由于特定的线性低密度聚乙烯具有柔性分子链赋予了保护层较好的伸缩延展性和抗应力开裂性，同时通过龟甲钢网与内衬层中特定的高密度聚乙烯的分子链发生缠绕，从而使罐体结构更加稳定，不易发生剥离，且特定孔径和网厚的龟甲钢网能够增加罐体强度，同时进一步增加罐体的减震性能和抗冲击性，此外保护层中加入了一定比例的抗老化剂和紫外线吸收剂使得储罐具有优异的抗老化性能，显著提升了使用寿命。
在一些优选的实施方式中，所述储罐出水口法兰采用与罐体相同的材质，采用热熔焊接加工及罐体与法兰一次成型，避免出现漏液而更换配件。
在一些优选的实施方式中，本发明的另一方面提供了一种发泡三重层储罐在储存和运输中的应用。
实施例
为了更好的理解上述技术方案，下面将结合具体的实施方式对上述技术方案进行详细的说明。有必要在此指出的是，以下实施例只用于对本发明作进一步说明，不能理解为对本发明保护范围的限制，该领域的专业技术人员根据上述本发明的内容做出的一些非本质的改进和调整，仍属于本发明的保护范围。另外，如果没有其它说明，所用原料都是市售的。
实施例1
本实施例提供了一种发泡三重层储罐，从内到外依次包括内衬层、发泡层、保护层，所述保护层的原料包括钢材和聚乙烯。
所述聚乙烯为线性低密度聚乙烯，型号为乐天化学UR644，密度为0.936g/cm3，熔体流动速率为0.5g/min。
所述保护层的原料还包括抗老化剂和紫外线吸收剂，且重量比为1：1，抗老化剂的加入量为聚乙烯的0.05wt％，紫外线吸收剂的加入量为聚乙烯的0.05wt％，所述抗老化剂为β-(3,5-二叔丁基-4-羟基苯基)丙酸十八碳醇酯，所述紫外线吸收剂为紫外线吸收剂U-V531。
所述发泡层为龟甲钢网，所述龟甲钢网的孔距为3cm，网厚1.8cm。
所述内衬层的原料为高密度聚乙烯，购自乐天化学，牌号为5200BH，软化点为125-135℃，密度为0.964g/cm3。
所述储罐的罐体采用滚塑成型法制备而成。
实施例2
本实施例提供了一种发泡三重层储罐，具体实施方式同实施例1，其区别在于所述线性低密度聚乙烯替换为低密度聚乙烯，购买于埃克森美孚化工，型号为ExxonMobilTMLDPELD 105 Series。
实施例3
本实施例提供了一种发泡三重层储罐，具体实施方式同实施例1，其区别在于所述龟甲钢网的孔距为0.5cm，网厚为0.5cm。
性能测试
分别将实施例1-3所制备的储罐从3米高度跌落，观察外观是否有裂纹，评价储罐的抗冲击性能，将结果记录在表1。
表1
| 实施例编号 | 抗冲击性能 |
| 实施例1 | 无裂纹出现 |
| 实施例2 | 出现少许微裂纹 |
| 实施例3 | 出现大裂纹 |
以上所述仅为本发明的优选实施例，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对本领域的技术人员来说，可根据上述说明加以改进和变换，所有这些改进和变换都应属于本发明所附权利要求的保护范围。
Claims (10)
1.一种发泡三重层储罐，其特征在于，从内到外依次包括内衬层、发泡层、保护层，所述保护层的原料包括钢材和/或聚乙烯。
2.根据权利要求1所述的一种发泡三重层储罐，其特征在于，所述聚乙烯包括线性低密度聚乙烯。
3.根据权利要求2所述的一种发泡三重层储罐，其特征在于，所述线性低密度聚乙烯的密度为0.910～0.941g/cm3，熔体流动速率为0.3-0.8g/min。
4.根据权利要求1所述的一种发泡三重层储罐，其特征在于，所述保护层的原料还包括抗老化剂和紫外线吸收剂，且二者的重量比为1：(0.8-1.2)。
5.根据权利要求4所述的一种发泡三重层储罐，其特征在于，所述抗老化剂的加入量为聚乙烯的0.01-0.1wt％，所述紫外线吸收剂的加入量为聚乙烯的0.01-0.1wt％。
6.根据权利要求1-5任一项所述的一种发泡三重层储罐，其特征在于，所述发泡层为龟甲钢网，所述龟甲钢网的孔距为1-6cm，网厚1-2.5cm。
7.根据权利要求1所述的一种发泡三重层储罐，其特征在于，所述内衬层的原料为高密度聚乙烯。
8.根据权利要求7所述的一种发泡三重层储罐，其特征在于，所述高密度聚乙烯的软化点为120-140℃，密度为0.945-0.976g/cm3。
9.根据权利要求8所述的一种发泡三重层储罐，其特征在于，所述储罐的罐体采用滚塑成型法制备而成。
10.一种根据权利要求1-9任一项所述的发泡三重层储罐在储存和运输中的应用。
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