CN111686515A - 一种耐高压差过滤材料及其制作方法 - Google Patents

一种耐高压差过滤材料及其制作方法 Download PDF

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CN111686515A
CN111686515A CN202010578198.7A CN202010578198A CN111686515A CN 111686515 A CN111686515 A CN 111686515A CN 202010578198 A CN202010578198 A CN 202010578198A CN 111686515 A CN111686515 A CN 111686515A
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张久政
于少晖
赵金良
李俊勤
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Jiujiang 707 Institute Of Precision Mechatronics Sci & Tech Co ltd
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Abstract

本发明公开了一种耐高压差过滤材料及其制作方法，涉及过滤材料技术领域，该过滤材料包括过滤层以及设置在所述过滤层表面的耐高压差层，所述耐高压差层的透气度为3000～10000mm/s，耐破强度为300～1000kPa，该过滤材料的制作方法包括：S1、将改性粘合树脂熔化，均匀喷洒到耐高压差层表面；S2、将过滤层堆叠在所述耐高压差层喷洒有改性粘合树脂的一面；S3、将堆叠在一起的过滤层和耐高压差层进行热压成形。本发明的有益效果是通过采用耐高压差层与滤材复合，对滤材纤维进行加固，提高了过滤材料整体耐高压差性能，当受到高压差时，不容易发生破损，延长过滤元件使用寿命，并且耐高压差层具有良好的透气性，不会降低过滤材料的过滤效率。

Description

一种耐高压差过滤材料及其制作方法
技术领域
本发明涉及过滤材料领域，具体涉及一种耐高压差过滤材料及其制作方法。
背景技术
油液污染是影响液压、润滑系统元件寿命和运行可靠性的最主要因素，油液中固体颗粒污染物过多将导致元件运动副表面的磨损，降低元件的性能，在某些情况下甚至会造成灾难性的后果。
解决油液污染问题最直接有效的方法是利用高性能过滤材料制成的过滤元件将油液中的固体颗粒物滤除，高性能过滤材料具有过滤精度高、流通阻力小、纳污容量大等特点，能有效阻截、吸附油液中的固体颗粒物。系统中使用高性能过滤元件，可以有效提高油液品质，降低系统元件的磨损，减少过滤元件更换次数，节约运作成本。
一般来说，随着滤材上拦截污染物颗粒的不断积累，滤材上承载压差也会随之不断增加。然而，传统复合滤材的耐高压差性能差，当达到较低压差时，滤材会发生破损，导致过滤效率迅速降低，已经被滤材拦截的大量污染物颗粒会冲至过滤器下游，造成下游精密元件的磨损和卡死。因此，使用耐高压差性能差的传统复合过滤材料，会使油液系统运行存在重大安全隐患。
发明内容
本发明的目的在于至少解决现有技术中存在的技术问题之一，提供一种耐高压差过滤材料及其制作方法。
本发明的技术解决方案如下：
一种耐高压差过滤材料，包括过滤层以及设置在所述过滤层表面的耐高压差层，所述耐高压差层的透气度为3000～10000mm/s，耐破强度为300～1000kPa。
作为优选，还包括设置在所述过滤层与所述耐高压差层之间的连接层，所述耐高压差层通过所述连接层设置在所述过滤层表面。
作为优选，所述连接层为粘合层。
作为优选，所述粘合层为改性粘合树脂。
作为优选，所述耐高压差层为熔喷丝网或纺粘无纺布。
作为优选，所述熔喷丝网为涤纶纤维或尼龙纤维材质。
作为优选，所述过滤层为无机惰性玻璃纤维材质。
作为优选，所述耐高压差层的透气度为3000～6000mm/s或7000～10000mm/s。
作为优选，所述耐高压差层的耐破强度为500～900kPa。
一种耐高压差过滤材料的制作方法，包括以下步骤：
S1、将改性粘合树脂熔化，均匀喷洒到耐高压差层表面；
S2、将过滤层堆叠在所述耐高压差层喷洒有改性粘合树脂的一面；
S3、将堆叠在一起的过滤层和耐高压差层送入热压复合设备，调节热压复合设备的压辊压力为1～3bar、线速度为5～15m/min，并调节热压复合设备的热压温度大于改性粘合树脂的熔点，热压成形，制成耐高压差过滤材料。
本发明至少具有以下有益效果之一：本发明中的过滤材料通过采用高透气性、耐破强度高的耐高压差层与滤材复合，通过耐高压差层对滤材纤维进行加固，提高了过滤材料整体耐高压差性能，当受到压差时，本发明的过滤材料不容易发生破损，仍具有良好的过滤性能，因此与传统的过滤材料相比，在受到高压差时，仍具有良好的过滤性能，并能够延长过滤材料和过滤元件使用寿命，并且耐高压差层具有良好的透气性，不会降低过滤材料的过滤效率；同时，本发明的过滤材料制作方法简单，便于大规模生产，可适用于工程机械、船舶、电力、机车、石化等各行业的流体污染控制。
附图说明
图1为本发明的结构示意图；
图2为本发明的制作方法示意图；
附图标记：1、过滤层；2、连接层；3、耐高压差层；4、上压辊；5、下压辊。
具体实施方式
下面用具体实施例对本发明做进一步详细说明，但本发明不仅局限于以下具体实施例。
实施例1
如图1所示，本实施例的耐高压差过滤材料包括依次层叠的过滤层1、连接层2以及耐高压差层3，即通过连接层2将过滤层1和耐高压差层3连接在一起。本实施例中，过滤层1为具有过滤功能的介质，本实施例中采用的是无机惰性玻璃纤维，在实际应用中还可以是合成纤维、植物纤维等。本实施例中，连接层2采用粘合层，即通过粘合剂将过滤层1和耐高压差层3粘合在一起，具体的，本实施例中粘合剂为改性粘合树脂，改性粘合树脂具体可以选用改性共聚酯或改性共聚酰胺类；在实际应用中，连接层2还可以由其他物质形成。耐高压差层3选用透气度为3000～10000mm/s、耐破强度为300～1000kPa的材料，透气度选择3000～10000mm/s是为了不增加过滤材料的阻力，耐破强度选择300～1000kPa是为了使过滤材料能够承受一定的压力，从而在受到压差时不容易发生破损，仍具有良好的过滤性能。
本实施例中，耐高压差层3选用熔喷丝网，具体的可以是涤纶纤维或尼龙纤维等材料经过熔喷机等处理形成的丝网状结构，本实施例中的熔喷丝网的透气度为5000mm/s；耐破强度为800kPa，从而过滤材料在受到800kPa以下的压差时，不会发生破损。在其他实施例中，熔喷丝网的透气度还可以是3000mm/s、3500mm/s、4000mm/s、4500mm/s、5500mm/s、6000mm/s、6500mm/s、7000mm/s、7500mm/s、8000mm/s、8500mm/s、9000mm/s、9500mm/s、10000mm/s等；熔喷丝网的耐破强度可以是300kPa、350kPa、400kPa、450kPa、500kPa、550kPa、600kPa、650kPa、700kPa、720kPa、750kPa、850kPa、900kPa、950kPa、1000kPa等。
如图2所示，本实施例还提供了上述耐高压差过滤材料的制备方法，具体包括以下步骤：
S1、将改性粘合树脂熔化，均匀喷洒到喷熔丝网形成的耐高压差层3上表面，；
S2、将无机惰性玻璃纤维形成的过滤层1堆叠在所述耐高压差层3的上表面，即喷洒有改性粘合树脂的一面；
S3、将堆叠在一起的过滤层1和耐高压差层3送入热压复合设备的上压辊4和下压辊5之间，调节热压复合设备的压辊压力，本实施例中，压辊压力为2bar、线速度为10m/min，在其他实施例中，压辊压力还可以为1bar、1.5bar，2.5bar、3bar等，线速度可以为5m/min、8m/min、12m/min、15m/min等，并调节热压复合设备的热压温度大于改性粘合树脂的熔点，在本实施例中，调节热压温度至150℃，热压成形，制成耐高压差过滤材料。
实施例2
本实施例与实施例1的区别在于：过滤层1采用合成纤维，耐高压差层3选用透气度为60000mm/s、耐破强度为700kPa的纺粘无纺布，纺粘无纺布可以是丙纶或涤纶等材质制成。
按照国家标准《液压传动过滤器评定滤芯过滤性能的多次通过方法》(GB/T18853-2015)中的方法测试实施例1和实施例2中耐高压差过滤材料与传统复合过滤材料在一定压差下的的过滤性能，测试结果如表1所示：
表1
Figure BDA0002552055450000041
由表1可以看出，实施例1和实施例2中的过滤材料在低压差时，过滤效率稍大于传统复合过滤材料，而在高压差时，实施例1和实施例2中的过滤材料的过滤效率远大于传统复合过滤材料，这是因为在受到高压差时，传统复合过滤材料发生破损，导致过滤效率降低，而实施例1和实施例2过滤材料由于耐高压层喷熔丝网和纺粘无纺布的加固作用，使得过滤材料在受到高压差时不会发生破损，从而在受到高压差时仍具有良好的过滤效果，并延长过滤材料的使用寿命。
实施例1和实施例2通过采用高透气性、耐破强度高的喷熔丝网、纺粘无纺布分别与无机惰性玻璃纤维滤材复合，通过喷熔丝网、纺粘无纺布对滤材纤维进行加固，提高了过滤材料整体耐高压差性能，当受到压差时，由于耐高压差层的加固作用，实施例1和实施例2的过滤材料不容易发生破损，特别是在受到高压差时，也不容易发生破损，相比传统的过滤材质，在受到高压差时仍具有良好的过滤效果，并延长了过滤元件使用寿命，并且实施例1和实施例2喷熔丝网和纺粘无纺布具有良好的透气性，不会降低过滤材料的过滤效率；同时，实施例1和实施例2中的过滤制作方法简单，生产效率高，便于大规模生产，可适用于工程机械、船舶、电力、机车、石化等各行业的流体污染控制。
以上仅是本发明的特征实施范例，对本发明保护范围不构成任何限制。凡采用同等交换或者等效替换而形成的技术方案，均落在本发明权利保护范围之内。

Claims (10)

1.一种耐高压差过滤材料，其特征在于，包括过滤层(1)以及设置在所述过滤层(1)表面的耐高压差层(3)，所述耐高压差层(3)的透气度为3000～10000mm/s，耐破强度为300～1000kPa。
2.根据权利要求1所述的一种耐高压差过滤材料，其特征在于，还包括设置在所述过滤层(1)与所述耐高压差层(3)之间的连接层(2)，所述耐高压差层(3)通过所述连接层(2)设置在所述过滤层(1)表面。
3.根据权利要求2所述的一种耐高压差过滤材料，其特征在于，所述连接层(2)为粘合层。
4.根据权利要求3所述的一种耐高压差过滤材料，其特征在于，所述粘合层为改性粘合树脂。
5.根据权利要求1所述的一种耐高压差过滤材料，其特征在于，所述耐高压差层(3)为熔喷丝网或纺粘无纺布。
6.根据权利要求5所述的一种耐高压差过滤材料，其特征在于，所述熔喷丝网为涤纶纤维或尼龙纤维材质。
7.根据权利要求1所述的一种耐高压差过滤材料，其特征在于，所述过滤层(1)为无机惰性玻璃纤维材质。
8.根据权利要求1所述的一种耐高压差过滤材料，其特征在于，所述耐高压差层(3)的透气度为3000～6000mm/s或7000～10000mm/s。
9.根据权利要求1所述的一种耐高压差过滤材料，其特征在于，所述耐高压差层(3)的耐破强度为500～800kPa。
10.一种耐高压差过滤材料的制作方法，其特征在于，包括以下步骤：
S1、将改性粘合树脂熔化，均匀喷洒到耐高压差层(3)表面；
S2、将过滤层(1)堆叠在所述耐高压差层(3)喷洒有改性粘合树脂的一面；
S3、将堆叠在一起的过滤层(1)和耐高压差层(3)送入热压复合设备，调节热压复合设备的压辊压力为1～3bar、线速度为5～15m/min，并调节热压复合设备的热压温度大于改性粘合树脂的熔点，热压成形，制成耐高压差过滤材料。
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Application publication date: 20200922