CN114059384A - 一种纳米空气滤纸及其制备方法 - Google Patents
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Abstract
本发明涉及空气滤纸技术领域,公开了一种纳米空气滤纸,包括滤纸原纸和对滤纸原纸进行固化处理的浸渍液,所述滤纸原纸按照重量份数计算包括以下组分:碱处理过的棉短绒浆60—80份、无碱玻璃纤维短切丝15—20份、纳米碳纤维聚合物10—20份、二氧化硅填料10—15份、改性淀粉轻脂碳酸钙1.5—5份、硅酸盐纤维2—10份、聚酰亚胺纤维5—15份、PET与pp复合短纤5—10份,所述浸渍液按照重量份数计算包括以下组分:苯丙乳液5—10份、有机锡稳定剂0.2—0.4份、热塑性酚醛树脂40—50份、工业用甲醇80—120份、助留剂3—5份,本发明具有紧度好、纸质紧凑、强度高、耐水性好、使用寿命长、能够满足滤清器滤芯的生产加工制作及滤纸自身在使用中的高要求的有益效果。
Description
技术领域
本发明涉及空气滤纸技术领域,尤其涉及一种纳米空气滤纸及其制备方法。
背景技术
空气滤纸作为空气过滤器滤芯的关键组成部分,其性能决定了空气过滤器的使用效果。随着医药、医疗卫生、电子等行业对厂房洁净度的要求越来越高,对空气过滤器提出了更高的要求。然而现有的空气滤纸由于采用普通木浆纤维制成,普遍存在着紧度高、过滤效率低、容灰量低、寿命短等缺点,而且其过滤效率一般都低于90%,且纸制的空气滤纸还普遍存在着固化性差、耐水性不够,当空气湿度改变时,纸张容易产生变形,进而影响过滤的效果。例如,中国专利申请公开号:CN108744725A,申请公开日2018年11月06号,发明创造名称为空气净化过滤纸及其制作方法、空气净化过滤芯。该空气净化过滤纸包括:支撑层;吸附层,设置在支撑层的一个表面上,且由纳米二氧化硅粉体形成;过滤层,设置在吸附层远离支撑层的表面上。其不足之处在于,该空气滤纸紧度过高,滤纸纸质较松,强度较低,耐水性较差,使用寿命短,不能满足滤清器滤芯的生产加工制作及滤纸自身在使用中的要求。
发明内容
本发明为了解决现有技术中的空气滤纸紧度过高或过低、纸质较松、强度低、耐水性差、使用寿命短、不能满足滤清器滤芯的生产加工制作及滤纸自身在使用中的要求的不足,提供了一种紧度好、纸质紧凑、强度高、耐水性好、使用寿命长、能够满足滤清器滤芯的生产加工制作及滤纸自身在使用中的高要求的纳米空气滤纸及其制备方法。
为实现上述目的,本发明采用如下技术方案:
一种纳米空气滤纸,包括滤纸原纸和对滤纸原纸进行固化处理的浸渍液,所述滤纸原纸按照重量份数计算包括以下组分:碱处理过的棉短绒浆60—80份、无碱玻璃纤维短切丝15—20份、纳米碳纤维聚合物10—20份、二氧化硅填料10—15份、改性淀粉轻脂碳酸钙1.5—5份、硅酸盐纤维2—10份、聚酰亚胺纤维5—15份、PET与pp复合短纤5—10份,所述浸渍液按照重量份数计算包括以下组分:苯丙乳液5—10份、有机锡稳定剂0.2—0.4份、热塑性酚醛树脂40—50份、工业用甲醇80—120份、助留剂3—5份。取以上成分配比的原料、采用如下的制备方法所制得的纳米空气滤纸,其主要性能指标可达到,滤速≤95S,吸水高度≥148mm,耐破度≥330Kpa,吸水量≥345g/㎡。
作为优选,所述助留剂为聚乙烯亚胺溶液或聚丙烯酰胺溶液。
作为优选,所述纳米空气滤纸的定量为180±15g/㎡。确定合适的定量,以平衡吸水性、耐破度和滤速之间的平衡关系,定量过高会导致滤速过低,定量过低则会导致吸水性和耐破度过低,影响使用。
作为优选,所述硅酸盐纤维的粒径大小不大于100nm。
作为优选,所述聚酰亚胺纤维的粒径大小不大于100nm。
一种纳米空气滤纸的制备方法,包括如下步骤:
a)取碱处理过的棉短绒浆60—80份、二氧化硅填料10—15份、改性淀粉轻脂碳酸钙1.5—5份、PET与pp复合短纤5—10份,通过碎浆机进行碎浆,再经过磨浆机进行磨浆,成浆的叩解度为17±2度;
b)取纳米碳纤维聚合物10—20份、无碱玻璃纤维短切丝15—20份、硅酸盐纤维2—10份、聚酰亚胺纤维5—15份,用纤维疏解机进行疏解,再经过双盘磨浆机在线打磨得到浆料度为2-4°SR的浆料;
c)将经过步骤a)和步骤b)制得的浆料在成浆池中进行混合并匀浆,之后在斜网纸机或测流式圆网纸机抄制成型,获得滤纸原纸;
d)取苯丙乳液5—10份、有机锡稳定剂0.2—0.4份、热塑性酚醛树脂40—50份、工业用甲醇80—120份、助留剂3—5份,置于反应池中于70—90℃的温度下进行充分搅拌至少2小时,并冷却至室温,用70—100目纱布过滤得到目标浸渍液;
e)将步骤c)制得的滤纸原纸浸渍在步骤d)制得的目标浸渍液中,采用凹版网纹面的辊式涂布方式进行浸渍;
f)将步骤e)中的浸渍后的原纸在140℃中的烘缸内进行烘干固化获得目标纳米空气滤纸。
作为优选,控制所述步骤e)中的浸渍涂布量为17±5%。
本发明的一种纳米空气滤纸及其制备方法具有以下优点:紧度好、纸质紧凑、强度高、耐水性好、使用寿命长、能够满足滤清器滤芯的生产加工制作及滤纸自身在使用中的高要求。
具体实施方式
下面通过实施例,对本发明的技术方案作进一步具体的说明。
对比例
某一种空气过滤纸以以下步骤制得:
(1)将0.1~2μm直径的玻璃棉纤维和6.5μm直径的玻璃纤维按1:1的质量比混合后,加酸调节pH值为3后疏解分散,送至成型器上抽吸后得成型湿纸;
(2)将相同质量的直径为50~100nm的碳纳米管和醇醚糖苷加入水中进行超声分散,配置成碳纳米管的质量分数为0.5%的碳纳米材料分散液;
(3)将碳纳米材料分散液与聚氨酯粘合剂按1:1的质量比混合,加入去离子水配制成碳纳米管分散液与聚氨酯粘合剂的质量分数总和为1%的混合稀释液;
(4)对成型湿纸通过帘式施胶方式施以混合稀释液(即施胶),成型湿纸中施以混合稀释液的一面为施胶面,施胶过程的车速为30m/min,施胶量(即混合稀释液的用量)为成型湿纸绝干重量的10%,真空度控制在10KPa;抽吸施胶湿纸后采用红外和烘缸干燥,即得含碳纳米材料的空气过滤纸。
其主要性能指标包括滤速≤108S,吸水高度≥97mm,耐破度≥294Kpa,吸水量≥287g/㎡。
实施例1
取碱处理过的棉短绒浆60份、无碱玻璃纤维短切丝15份、纳米碳纤维聚合物10份、二氧化硅填料10份、改性淀粉轻脂碳酸钙1.5份、硅酸盐纤维2份、聚酰亚胺纤维5份、PET与pp复合短纤5份、苯丙乳液5份、有机锡稳定剂0.2份、热塑性酚醛树脂40份、工业用甲醇80份、聚乙烯亚胺溶液3份,按照如下步骤进行纳米空气滤纸的制备:
a)取碱处理过的棉短绒浆、二氧化硅填料、改性淀粉轻脂碳酸钙、PET与pp复合短纤,通过碎浆机进行碎浆,再经过磨浆机进行磨浆,成浆的叩解度为15度;
b)取纳米碳纤维聚合物、无碱玻璃纤维短切丝、硅酸盐纤维、聚酰亚胺纤维,用纤维疏解机进行疏解,再经过双盘磨浆机在线打磨得到浆料度为2°SR的浆料;
c)将经过步骤a)和步骤b)制得的浆料在成浆池中进行混合并匀浆,之后在斜网纸机或测流式圆网纸机抄制成型,获得滤纸原纸;
d)取苯丙乳液、有机锡稳定剂、热塑性酚醛树脂、工业用甲醇、聚乙烯亚胺溶液,置于反应池中于70—90℃的温度下进行充分搅拌至少2小时,并冷却至室温,用70—100目纱布过滤得到目标浸渍液;
e)将步骤c)制得的滤纸原纸浸渍在步骤d)制得的目标浸渍液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制浸渍涂布量为17±5%;
f)将步骤e)中的浸渍后的原纸在140℃中的烘缸内进行烘干固化获得目标纳米空气滤纸。
实施例2
取碱处理过的棉短绒浆70份、无碱玻璃纤维短切丝18份、纳米碳纤维聚合物15份、二氧化硅填料12份、改性淀粉轻脂碳酸钙3份、硅酸盐纤维6份、聚酰亚胺纤维10份、PET与pp复合短纤8份、苯丙乳液8份、有机锡稳定剂0.3份、热塑性酚醛树脂15份、工业用甲醇100份、聚乙烯亚胺溶液4份,按照如下步骤进行纳米空气滤纸的制备:
a)取碱处理过的棉短绒浆、二氧化硅填料、改性淀粉轻脂碳酸钙、PET与pp复合短纤,通过碎浆机进行碎浆,再经过磨浆机进行磨浆,成浆的叩解度为17度;
b)取纳米碳纤维聚合物、无碱玻璃纤维短切丝、硅酸盐纤维、聚酰亚胺纤维,用纤维疏解机进行疏解,再经过双盘磨浆机在线打磨得到浆料度为3°SR的浆料;
c)将经过步骤a)和步骤b)制得的浆料在成浆池中进行混合并匀浆,之后在斜网纸机或测流式圆网纸机抄制成型,获得滤纸原纸;
d)取苯丙乳液、有机锡稳定剂、热塑性酚醛树脂、工业用甲醇、聚乙烯亚胺溶液,置于反应池中于70—90℃的温度下进行充分搅拌至少2小时,并冷却至室温,用70—100目纱布过滤得到目标浸渍液;
e)将步骤c)制得的滤纸原纸浸渍在步骤d)制得的目标浸渍液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制浸渍涂布量为17%;
f)将步骤e)中的浸渍后的原纸在140℃中的烘缸内进行烘干固化获得目标纳米空气滤纸。
实施例3
取碱处理过的棉短绒浆80份、无碱玻璃纤维短切丝20份、纳米碳纤维聚合物20份、二氧化硅填料15份、改性淀粉轻脂碳酸钙5份、硅酸盐纤维10份、聚酰亚胺纤维15份、PET与pp复合短纤10份、苯丙乳液10份、有机锡稳定剂0.4份、热塑性酚醛树脂50份、工业用甲醇120份、聚乙烯亚胺溶液5份,按照如下步骤进行纳米空气滤纸的制备:
a)取碱处理过的棉短绒浆、二氧化硅填料、改性淀粉轻脂碳酸钙、PET与pp复合短纤,通过碎浆机进行碎浆,再经过磨浆机进行磨浆,成浆的叩解度为19度;
b)取纳米碳纤维聚合物、无碱玻璃纤维短切丝、硅酸盐纤维、聚酰亚胺纤维,用纤维疏解机进行疏解,再经过双盘磨浆机在线打磨得到浆料度为4°SR的浆料;
c)将经过步骤a)和步骤b)制得的浆料在成浆池中进行混合并匀浆,之后在斜网纸机或测流式圆网纸机抄制成型,获得滤纸原纸;
d)取苯丙乳液、有机锡稳定剂、热塑性酚醛树脂、工业用甲醇、聚乙烯亚胺溶液,置于反应池中于70—90℃的温度下进行充分搅拌至少2小时,并冷却至室温,用70—100目纱布过滤得到目标浸渍液;
e)将步骤c)制得的滤纸原纸浸渍在步骤d)制得的目标浸渍液中,采用凹版网纹面的辊式涂布方式进行浸渍,控制浸渍涂布量为22%;
f)将步骤e)中的浸渍后的原纸在140℃中的烘缸内进行烘干固化获得目标纳米空气滤纸。
将对比例、实施例1—3所制得的纳米空气滤纸进行性能检测,其检测结果如表1所示。滤速≤95S,吸水高度≥148mm,耐破度≥330Kpa,吸水量≥345g/㎡。
表1。
定量 | 滤速 | 透气度 | 吸水高度 | 吸水量 | 耐破度 | |
单位 | g/㎡ | S | L/m<sup>2</sup>•S | mm | g/㎡ | kPa |
对比例 | 159 | 97 | 279 | 97 | 287 | 294 |
实施例1 | 167 | 84 | 312 | 151 | 348 | 335 |
实施例2 | 182 | 91 | 307 | 157 | 354 | 402 |
实施例3 | 196 | 96 | 304 | 160 | 362 | 391 |
根据表1的内容可得出,本发明所获得的经过17±5%的树脂浸渍(涂布)后的纳米空气滤纸,其吸水高度、耐破度、吸水量具有大幅度的提升,能够满足滤清器滤芯的生产加工制作及滤纸自身在使用中的高要求
本发明中所用的原料、设备,若无特别说明,均为本领域的常用原料、设备,本发明中所用方法,若无特别说明,均为本领域的常规方法。
本发明的一种纳米空气滤纸及其制备方法具有紧度好、纸质紧凑、强度高、耐水性好、使用寿命长、能够满足滤清器滤芯的生产加工制作及滤纸自身在使用中的高要求的有益效果。
Claims (7)
1.一种纳米空气滤纸,包括滤纸原纸和对滤纸原纸进行固化处理的浸渍液,其特征是,所述滤纸原纸按照重量份数计算包括:
碱处理过的棉短绒浆60—80份;
无碱玻璃纤维短切丝15—20份;
纳米碳纤维聚合物10—20份;
二氧化硅填料10—15份;
改性淀粉轻脂碳酸钙1.5—5份;
硅酸盐纤维2—10份;
聚酰亚胺纤维5—15份;
PET与pp复合短纤5—10份;
所述浸渍液按照重量份数计算包括:
苯丙乳液5—10份;
有机锡稳定剂0.2—0.4份;
热塑性酚醛树脂40—50份;
工业用甲醇80—120份;
助留剂3—5份。
2.根据权利要求1所述的一种纳米空气滤纸,其特征是,所述助留剂为聚乙烯亚胺溶液或聚丙烯酰胺溶液。
3.根据权利要求1所述的一种纳米空气滤纸,其特征是,所述纳米空气滤纸的定量为180±15g/㎡。
4.根据权利要求1所述的一种纳米空气滤纸,其特征是,所述硅酸盐纤维的粒径大小不大于100nm。
5.根据权利要求1所述的一种纳米空气滤纸,其特征是,所述聚酰亚胺纤维的粒径大小不大于100nm。
6.一种如权利要求1—5所述的纳米空气滤纸的制备方法,其特征是,包括如下步骤:
a)取碱处理过的棉短绒浆、二氧化硅填料、改性淀粉轻脂碳酸钙、PET与pp复合短纤,通过碎浆机进行碎浆,再经过磨浆机进行磨浆,成浆的叩解度为17±2度;
b)取纳米碳纤维聚合物、无碱玻璃纤维短切丝、硅酸盐纤维、聚酰亚胺纤维,用纤维疏解机进行疏解,再经过双盘磨浆机在线打磨得到浆料度为2-4°SR的浆料;
c)将经过步骤a)和步骤b)制得的浆料在成浆池中进行混合并匀浆,之后在斜网纸机或测流式圆网纸机抄制成型,获得滤纸原纸;
d)取苯丙乳液、有机锡稳定剂、热塑性酚醛树脂、工业用甲醇、助留剂,置于反应池中于70—90℃的温度下进行充分搅拌至少2小时,并冷却至室温,用70—100目纱布过滤得到目标浸渍液;
e)将步骤c)制得的滤纸原纸浸渍在步骤d)制得的目标浸渍液中,采用凹版网纹面的辊式涂布方式进行浸渍;
f)将步骤e)中的浸渍后的原纸在140℃中的烘缸内进行烘干固化获得目标纳米空气滤纸。
7.根据权利要求6所述的一种热固性空气滤纸的制备方法,其特征是,控制所述步骤e)中的浸渍涂布量为17±5%。
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