CN105951524A - 纳米机油滤纸及其制备方法 - Google Patents
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Abstract
本发明公开了一种纳米机油滤纸,包括原纸和浸胶液,所述的原纸包括竹浆、龙须草浆、针叶木浆、芳纶纤维、水溶性聚乙烯醇纤维、聚芳噁二唑纤维、玻璃纤维、纤维状粘结剂、分散剂、消泡剂、防水剂;所述的浸胶液包括水溶性酚醛树脂、三聚氰胺甲醛树脂、聚醋酸乙烯酯乳液、抗油剂、碱性物质和磷类抗氧化剂;本发明将各种浆料通过超高压微射流纳米分散机得到纤维素纳米纤维,该纤维素纳米纤维具有比铁更硬更轻的特性,用于滤纸行业可以实现纸页轻量化。
Description
技术领域
本发明涉及滤纸技术领域,具体涉及一种纳米机油滤纸及其制备方法。
背景技术
机油系统中的油液具有传递功率、减少元件间的摩擦、悬浮污染物、控制元件表面的氧化及冷却等多种功效,如果当系统内部由于元件的磨损产生的颗粒及油液的老化产生的胶状油泥会腐蚀金属而导致油液被污染后,将会破坏其原有功效,这些污染物对系统的工作可靠性和元件的寿命有直接的影响,导致系统运行中的各种故障,为了保证系统的正常工作,必须采取有效的净化措施清除油液中的各种污染物,以提高或保持油液必需的清洁度。其中最有效而又最可靠的净化方法是过滤,因纸质滤芯与其他滤清器比较,不但成本低、滤清效率高,而且体积小、重量轻、使用简单。
现有的机油滤纸存在以下缺点:过滤效率低、过滤精度差、容尘量低,使用寿命短;耐温、耐水、耐油的性能差,导致使用寿命短;质量波动大、稳定性差以及纸页厚重。随着科技的进步,机油系统将向着高温、高压、大流量方向发展,机油件的精度越来越高,零件之间配合的间隙越来越小,这势必对机油滤纸提出了更高的要求。
发明内容
针对现有技术的不足,本发明提供一种纳米机油滤纸,其具有过滤效率高、过滤精度好、容尘量高,使用寿命长;质量稳定性好,能耐高温、高压、大流量、承载能力强和纸页轻量化的特征;本发明还提供了该固化机油滤纸的制备方法。
为实现发明目的,本发明采用以下技术方案:
一种纳米机油滤纸,包括原纸和浸胶液,所述的原纸,按重量份数计,包括以下组分:
所述的浸胶液,按重量份数计,包括以下组分:
芳纶纤维是一种新型高科技合成纤维,具有超高强度、高模量和耐高温、耐酸耐碱、重量轻、绝缘、抗老化、生命周期长等优良性能。
作为优选,所述的纤维状粘结剂为包括水溶性PVA纤维、维荣纤维、低熔点聚酯中的一种或两种以上混合物。
作为优选,所述的分散剂包括阴离子聚丙烯酰胺或聚氧乙烯。
作为优选,所述的原纸中的防水剂选自三聚氰胺类树脂、防水浆或脲醛树脂的一种或多种。
作为优选,所述的碱性物质为氢氧化钠、氨水、氢氧化钙、氢氧化镁、六亚甲基四胺、碳酸钠或叔胺。
作为优选,所述的原纸的定量为50±5g/㎡,厚度为0.25±0.05mm。
作为优选,所述的纳米机油滤纸的定量为80±5g/㎡,厚度为0.35±0.05mm。
本发明还涉及所述的纳米机油滤纸的制备方法,采取如下的技术方案:
一种纳米机油滤纸的制备方法,包括如下步骤:
1)按配料量将竹浆、龙须草浆、针叶木浆、芳纶纤维、水溶性聚乙烯醇纤维、聚芳噁二唑纤维和玻璃纤维加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15~100nm之间,长度在200nm~20微米的纤维素纳米纤维浆料,所述的浆料中含纤维素纳米纤维的重量百分比为10~30%,优选为15~25%;
2)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体,其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为3~8%,优选为5~8%;
3)将步骤1所得的纤维素纳米纤维浆料、步骤2得到的纳米纤维素晶体胶体、纤维状粘结剂、木质素、分散剂、消泡剂和防水剂再于打浆机中进行打浆得到成浆,成浆的打浆浓度为3.5-4.5%,打浆度30-50°SR,湿重6-8g的成浆;
4)将步骤3)得到的成浆按常规条件上网抄造及压榨得到原纸;
5)配置浸胶液,将配方量的水溶性酚醛树脂、三聚氰胺甲醛树脂、聚醋酸乙烯酯乳液、抗油剂、碱性物质和磷类抗氧化剂放入反应釜中于60~80℃的温度下进行充分的搅拌,搅拌时间为2~6hr,然后冷却至室温,用50~100目纱布过滤得到浸渍剂;
6)将步骤4)得到原纸浸渍在步骤5)中的浸胶液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制上胶量为20%±0.5%;
7)浸胶后纸样在150℃~160℃循环热风中固化。
本发明将各种浆料通过超高压微射流纳米分散机得到纤维素纳米纤维,该纤维素纳米纤维具有比铁更硬更轻的特性,用于滤纸行业可以实现纸页轻量化。
竹浆为中等纤维长度的纸浆,细而柔软。浆张松厚度、撕裂度高,耐破强度和抗张强度较低,有较高的机械强度;龙须草浆洁净强韧,纤维细长,有优越的交织力,成纸较细腻平滑,机械强度良好;纳米纤维素晶体(nano-crystalline cellulose,NCC),其粒径一般在30~100nm之间,比表面积很大,可以长期稳定地分散在溶剂体系形成准交替分散体系,在水中分散形成稳定的NCC胶体,纳米纤维素质轻、力学性能优异、透光性,其生物降解性和可再生性也是其他增强材料无法相比的,NCC在制浆造纸中作为增强、助留、助滤剂有很好的发展前景。
具体实施方式
下面通过实施例进一步描述本发明,但本发明不仅仅局限于以下实施例。
实施例1
一种纳米机油滤纸,包括原纸和浸胶液,所述的原纸,按重量份数计,包括竹浆25份,龙须草浆40份,针叶木浆40份,芳纶纤维30份,水溶性聚乙烯醇纤维18份,聚芳噁二唑纤维25份,玻璃纤维24份,纤维状粘结剂12份,木质素5份,纳米纤维素晶体1.5份,分散剂2.5份,消泡剂3.5份,防水剂1.5份;所述的浸胶液,按重量份数计,包括水溶性酚醛树脂40份,三聚氰胺甲醛树脂30份,聚醋酸乙烯酯乳液18份,抗油剂3.5份,碱性物质4份,磷类抗氧化剂2.3份;
所述的纤维状粘结剂为低熔点聚酯;所述的分散剂包括阴离子聚丙烯酰胺;所述的原纸中的防水剂为三聚氰胺类树脂;所述的碱性物质为氢氧化钠。
一种纳米机油滤纸的制备方法,包括如下步骤:
1)按配料量将竹浆、龙须草浆、针叶木浆、芳纶纤维、水溶性聚乙烯醇纤维、聚芳噁二唑纤维和玻璃纤维加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15~100nm之间,长度在200nm~20微米的纤维素纳米纤维浆料,所述的浆料中含纤维素纳米纤维的重量百分比为25%;
2)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体,其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为68%;
3)将步骤1所得的纤维素纳米纤维浆料、步骤2得到的纳米纤维素晶体胶体、纤维状粘结剂、木质素、分散剂、消泡剂和防水剂再于打浆机中进行打浆得到成浆,成浆的打浆浓度为4.5%,打浆度30°SR,湿重6g的成浆;
4)将步骤3)得到的成浆按常规条件上网抄造及压榨得到原纸;
5)配置浸胶液,将配方量的水溶性酚醛树脂、三聚氰胺甲醛树脂、聚醋酸乙烯酯乳液、抗油剂、碱性物质和磷类抗氧化剂放入反应釜中于60~80℃的温度下进行充分的搅拌,搅拌时间为2~6hr,然后冷却至室温,用50~100目纱布过滤得到浸渍剂;
6)将步骤4)得到原纸浸渍在步骤5)中的浸胶液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制上胶量为20%±0.5%;
7)浸胶后纸样在150℃~160℃循环热风中固化。
实施例2
一种纳米机油滤纸,包括原纸和浸胶液,所述的原纸,按重量份数计,包括竹浆20份,龙须草浆30份,针叶木浆40份,芳纶纤维60份,水溶性聚乙烯醇纤维10份,聚芳噁二唑纤维20份,玻璃纤维20份,纤维状粘结剂5份,木质素2.5份,纳米纤维素晶体3份,分散剂0.5份,消泡剂3份,防水剂1.2份;所述的浸胶液,按重量份数计,包括水溶性酚醛树脂40份,三聚氰胺甲醛树脂30份,聚醋酸乙烯酯乳液20份,抗油剂5份,碱性物质3.5份,磷类抗氧化剂2.5份;
所述的纤维状粘结剂为维荣纤维;所述的分散剂为聚氧乙烯;所述的原纸中的防水剂为防水浆;所述的碱性物质为氢氧化钙。
一种纳米机油滤纸的制备方法,包括如下步骤:
1)按配料量将竹浆、龙须草浆、针叶木浆、芳纶纤维、水溶性聚乙烯醇纤维、聚芳噁二唑纤维和玻璃纤维加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15~100nm之间,长度在200nm~20微米的纤维素纳米纤维浆料,所述的浆料中含纤维素纳米纤维的重量百分比为15%;
2)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体,其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为5%;
3)将步骤1所得的纤维素纳米纤维浆料、步骤2得到的纳米纤维素晶体胶体、纤维状粘结剂、木质素、分散剂、消泡剂和防水剂再于打浆机中进行打浆得到成浆,成浆的打浆浓度为3.5%,打浆度40°SR,湿重8g的成浆;
4)将步骤3)得到的成浆按常规条件上网抄造及压榨得到原纸;
5)配置浸胶液,将配方量的水溶性酚醛树脂、三聚氰胺甲醛树脂、聚醋酸乙烯酯乳液、抗油剂、碱性物质和磷类抗氧化剂放入反应釜中于60~80℃的温度下进行充分的搅拌,搅拌时间为2~6hr,然后冷却至室温,用50~100目纱布过滤得到浸渍剂;
6)将步骤4)得到原纸浸渍在步骤5)中的浸胶液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制上胶量为20%±0.5%;
7)浸胶后纸样在150℃~160℃循环热风中固化。
实施例3
一种纳米机油滤纸,包括原纸和浸胶液,所述的原纸,按重量份数计,包括竹浆10份,龙须草浆5份,针叶木浆60份,芳纶纤维30份,水溶性聚乙烯醇纤维20份,聚芳噁二唑纤维30份,玻璃纤维30份,纤维状粘结剂1份,木质素0.2份,纳米纤维素晶体5份,分散剂0.1份,消泡剂0.1份,防水剂0.2份;所述的浸胶液,按重量份数计,包括水溶性酚醛树脂50份,三聚氰胺甲醛树脂30份,聚醋酸乙烯酯乳液10份,抗油剂0.2份,碱性物质1份,磷类抗氧化剂0.5份。
所述的纤维状粘结剂为水溶性PVA纤维;所述的分散剂包括阴离子聚丙烯酰胺;所述的原纸中的防水剂为三聚氰胺类树脂;所述的碱性物质为氢氧化钠。
一种纳米机油滤纸的制备方法,包括如下步骤:
1)按配料量将竹浆、龙须草浆、针叶木浆、芳纶纤维、水溶性聚乙烯醇纤维、聚芳噁二唑纤维和玻璃纤维加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15~100nm之间,长度在200nm~20微米的纤维素纳米纤维浆料,所述的浆料中含纤维素纳米纤维的重量百分比为10%;
2)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体,其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为8%;
3)将步骤1)所得的纤维素纳米纤维浆料、步骤2)得到的纳米纤维素晶体胶体、纤维状粘结剂、木质素、分散剂、消泡剂和防水剂再于打浆机中进行打浆得到成浆,成浆的打浆浓度为3.5%,打浆度30°SR,湿重7g的成浆;
4)将步骤3)得到的成浆按常规条件上网抄造及压榨得到原纸;
5)配置浸胶液,将配方量的水溶性酚醛树脂、三聚氰胺甲醛树脂、聚醋酸乙烯酯乳液、抗油剂、碱性物质和磷类抗氧化剂放入反应釜中于60~80℃的温度下进行充分的搅拌,搅拌时间为2~6hr,然后冷却至室温,用50~100目纱布过滤得到浸渍剂;
6)将步骤4)得到原纸浸渍在步骤5)中的浸胶液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制上胶量为20%±0.5%;
7)浸胶后纸样在150℃~160℃循环热风中固化。
上述实施例制得的纳米机油滤纸技术指标如下表所示:
项目 | 单位 | 技术要求 | 实施例1 | 实施例2 | 实施例3 |
原纸定量 | g/m2 | 50±5 | 53 | 51 | 53 |
原纸厚度 | mm | 0.25±0.05 | 0.27 | 0.26 | 0.29 |
滤纸定量 | g/m2 | 80±5 | 78 | 83 | 85 |
滤纸厚度 | mm | 0.35±0.05 | 0.34 | 0.36 | 0.30 |
原纸耐破度 | kPa | - | 250 | 256 | 262 |
滤纸耐破度 | kPa | - | 390 | 391 | 416 |
滤纸最大孔径 | μm | - | 45 | 48 | 47 |
滤纸平均孔径 | μm | - | 32 | 33 | 31 |
滤纸过滤效率 | μm | - | 7~16 | 7~16 | 7~16 |
Claims (8)
1.纳米机油滤纸,包括原纸和浸胶液,其特征在于所述的原纸,按重量份数计,包括以下组分:
所述的浸胶液,按重量份数计,包括以下组分:
2.根据权利要求1所述的纳米机油滤纸,其特征在于所述的纤维状粘结剂为包括水溶性PVA纤维、维荣纤维、低熔点聚酯中的一种或两种以上混合物。
3.根据权利要求1所述的纳米机油滤纸,其特征在于所述的分散剂包括阴离子聚丙烯酰胺或聚氧乙烯。
4.根据权利要求1所述的纳米机油滤纸,其特征在于所述的原纸中的防水剂选自三聚氰胺类树脂、防水浆或脲醛树脂的一种或多种。
5.根据权利要求1所述的纳米机油滤纸,其特征在于所述的碱性物质为氢氧化钠、氨水、氢氧化钙、氢氧化镁、六亚甲基四胺、碳酸钠或叔胺。
6.根据权利要求1所述的纳米机油滤纸,其特征在于所述的原纸的定量为50±5g/㎡,厚度为0.25±0.05mm。
7.根据权利要求1所述的纳米机油滤纸,其特征在于所述的纳米机油滤纸的定量为80±5g/㎡,厚度为0.35±0.05mm。
8.如权利要求1至7任一所述的纳米机油滤纸的制备方法,其特征在于包括如下步骤:
1)按配料量将竹浆、龙须草浆、针叶木浆、芳纶纤维、水溶性聚乙烯醇纤维、聚芳噁二唑纤维和玻璃纤维加水进行混合在超高压微射流纳米分散机的作用下进行剥离、撕裂成直径为15~100nm之间,长度在200nm~20微米的纤维素纳米纤维浆料,所述的浆料中含纤维素纳米纤维的重量百分比为10~30%;
2)将配料量的纳米纤维素晶体分散在水中得到稳定的纳米纤维素晶体胶体,其中该纳米纤维素晶体胶体的纳米纤维素晶体的质量分数为3~8%;
3)将步骤1)所得的纤维素纳米纤维浆料、步骤2)得到的纳米纤维素晶体胶体、纤维状粘结剂、木质素、分散剂、消泡剂和防水剂再于打浆机中进行打浆得到成浆,成浆的打浆浓度为3.5-4.5%,打浆度30-50°SR,湿重6-8G的成浆;
4)将步骤3)得到的成浆按常规条件上网抄造及压榨得到原纸;
5)配置浸胶液,将配方量的水溶性酚醛树脂、三聚氰胺甲醛树脂、聚醋酸乙烯酯乳液、抗油剂、碱性物质和磷类抗氧化剂放入反应釜中于60~80℃的温度下进行充分的搅拌,搅拌时间为2~6hr,然后冷却至室温,用50~100目纱布过滤得到浸渍剂;
6)将步骤4)得到原纸浸渍在步骤5)中的浸胶液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制上胶量为20%±0.5%;
7)浸胶后纸样在150℃~160℃循环热风中固化。
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