CN113445358A - 一种高灰分耐磨原纸及其制备方法 - Google Patents
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Abstract
本发明属于特种纸技术领域,具体涉及一种高灰分耐磨原纸及其制备方法。本发明提供了一种耐磨原纸,以质量份数计,包括组分:耐磨剂30~50份;天然纤维35~60份;胶乳4.5~11.5份;絮凝剂0.1~0.3份;湿强剂0.1~0.3份;消泡剂0.01~0.1份。本发明还提供了该耐磨原纸的制备方法,按以下步骤进行:(1)将天然纤维进行疏解,得到天然纤维疏解液;(2)将所述天然纤维疏解液、耐磨剂和胶乳混合,得到混合料A;(3)将所述混合料A、絮凝剂、湿强剂和消泡剂混合,得到混合料B;(4)将所述混合料B加水稀释,得到浆料;(5)将所述浆料进行抄造,得到所述耐磨原纸。本发明提供的耐磨原纸,耐磨剂含量高,抗张及湿抗张强度好,制备方法简易、成本低。
Description
技术领域
本发明属于特种纸技术领域,具体涉及一种高灰分耐磨原纸及其制备方法。
背景技术
强化木地板的外表层为耐磨层,目的是为了提高强化木地板的耐磨性,延长使用寿命。耐磨层因原纸含有耐磨剂(Al2O3)而具备耐磨性能。一般地,耐磨剂的含量越高,耐磨性能越好。
在耐磨原纸生产过程中,耐磨剂的添加方式主要有浆内添加和表面涂布。通过此两种方式抄造的耐磨原纸产品的灰分含量一般在10%~30%。耐磨剂的添加量有限。专利申请号201010544761.5“高性能耐磨纸的制备方法”记载了采用湿法抄造的方法制备耐磨原纸,所提供的耐磨纸的灰分含量可达35%。但该制备方法使用的耐磨剂是经硅烷偶联剂改性后的Al2O3粉体。虽然此法可提高原纸中灰分的含量,但也增加了生产工序,提高了生产成本。
发明内容
有鉴于此,本发明的目的在于提供一种高灰分耐磨原纸,具有耐磨剂含量高,抗张及湿抗张强度好的特点;本发明还提供了一种简单易行、成本低廉的该耐磨原纸的制备方法。
为了实现上述发明目的,本发明提供了以下技术方案:
本发明提供一种高灰分耐磨原纸,以质量份数计,包括组分:
耐磨剂30~50份;
天然纤维35~60份;
胶乳4.5~11.5份;
絮凝剂0.1~0.3份;
湿强剂0.1~0.3份;
消泡剂0.01~0.1份。
优选的,所述耐磨剂为三氧化二铝(Al2O3);所述耐磨剂的粒径为325~1250目。
优选的,所述天然纤维为棉纤维、麻纤维、竹纤维和针叶木纤维中的一种或多种。
优选的,所述胶乳为丁苯胶乳、丁腈胶乳、丙烯酸胶乳、羧基丁苯胶乳和羧基丁腈胶乳中的一种或多种。
优选的,所述絮凝剂包括聚合氯化铝和阳离子聚丙烯酰胺;所述聚合氯化铝和阳离子聚丙烯酰胺的质量比为(1~2)∶1。
优选的,所述湿强剂为聚酰胺环氧氯丙烷树脂、聚乙烯亚胺、三聚氰胺甲醛树脂和脲甲醛树脂中的一种或多种。
优选的,所述消泡剂为有机硅类消泡剂。
本发明还提供了上述技术方案所述耐磨原纸的制备方法,包括以下步骤:
将天然纤维进行疏解,得到天然纤维疏解液;
将所述天然纤维疏解液、耐磨剂和胶乳混合,得到混合料A;
将所述混合料A、絮凝剂、湿强剂和消泡剂混合,得到混合料B;
将所述混合料B加水稀释,得到浆料;
将所述浆料进行抄造,得到所述耐磨原纸。
优选的,所述天然纤维疏解液的质量浓度为0.6~2%;所述浆料的固含量为0.2~1%。
本发明提供了一种耐磨原纸,以质量份数计,包括组分:耐磨剂30~50份;天然纤维35~60份;胶乳4.5~11.5份;絮凝剂0.1~0.3份;湿强剂0.1~0.3份;消泡剂0.01~0.1份。在本发明中,所述耐磨剂为耐磨原纸提供耐磨性能;所述天然纤维具有骨架支撑及增强作用,并可以与胶乳良好结合;所述胶乳可使各组分有机地粘合在一起,特别是有利于将耐磨剂和天然纤维粘结成网膜;所述絮凝剂、湿强剂和消泡剂作为助剂,有利于耐磨原纸的成型和增强。本发明提供的耐磨原纸,耐磨剂含量高,抗张强度及湿抗张强度好,制备方法简易、成本低。
具体实施方式
本发明提供了一种高灰分耐磨原纸,以质量份数计,包括组分:
耐磨剂30~50份;
天然纤维35~60份;
胶乳4.5~11.5份;
絮凝剂0.1~0.3份;
湿强剂0.1~0.3份;
消泡剂0.01~0.1份。
在本发明中,若无特殊说明,所有的组分均为本领域技术人员熟知的市售商品。
以质量份数计,本发明提供的耐磨原纸包括30~50份耐磨剂,优选为35~48份,更优选为40~45份。在本发明中,所述耐磨剂为三氧化二铝(Al2O3)粉末。在本发明中,所述耐磨剂的粒径优选为325~1250目,更优选为350~1000目,再优选为500~800目。本发明所述耐磨剂提供耐磨原纸的耐磨性能。
以所述耐磨剂的质量份数为基准,本发明提供的耐磨原纸包括35~60份天然纤维,优选为45~58份,更优选为50~55份。在本发明中,所述天然纤维优选为棉纤维、麻纤维、竹纤维和针叶木纤维中的一种或多种。在本发明中,所述天然纤维具有骨架支撑及增强作用,并可以与胶乳良好结合。
以所述耐磨剂的质量份数为基准,本发明提供的耐磨原纸包括4.5~11.5份胶乳,优选为5~11份,更优选为6~9份。在本发明中,所述胶乳优选为丁苯胶乳、丁腈胶乳、丙烯酸胶乳、羧基丁苯胶乳和羧基丁腈胶乳中的一种或多种,更优选为丁苯胶乳和丁腈胶乳。当所述胶乳为丁苯胶乳和丁腈胶乳的混合物时,所述丁苯胶乳和丁腈胶乳的质量比优选为(2~3)∶2,更优选为(2.2~2.8)∶2,最优选为4∶3。在本发明中,所述胶乳是抄造制备耐磨原纸的关键组分,有利于使各组分有机地粘合在一起,特别是将耐磨剂和纤维粘结成网膜。
以所述隔离剂的质量份数为基准,本发明提供的耐磨原纸包括0.1~0.3份絮凝剂,优选为0.12~0.25份,更优选为0.15~0.2份。在本发明中,所述絮凝剂优选包括聚合氯化铝和阳离子聚丙烯酰胺;所述聚合氯化铝和阳离子聚丙烯酰胺的质量比优选为(1~2)∶1,更优选为(1.2~1.8)∶1,再优选为(1.4~1.6)∶1。
以所述隔离剂的质量份数为基准,本发明提供的耐磨原纸包括0.1~0.3份湿强剂,优选为0.12~0.25份,更优选为0.15~0.2份。在本发明中,所述湿强剂为聚酰胺环氧氯丙烷树脂、聚乙烯亚胺、三聚氰胺甲醛树脂和脲甲醛树脂中的一种或多种。
以所述隔离剂的质量份数为基准,本发明提供的耐磨原纸包括0.01~0.1份消泡剂,优选为0.03~0.08份,更优选为0.04~0.07份。在本发明中,所述消泡剂优选为有机硅类消泡剂。本发明所述絮凝剂、湿强剂和消泡剂作为助剂,有利于耐磨原纸的成型和增强。
本发明提供的耐磨原纸,耐磨剂含量高,抗张强度及湿抗张强度好。
本发明还提供了上述技术方案所说耐磨原纸的制备方法,包括以下步骤:
将天然纤维进行疏解,得到天然纤维疏解液;
将所述天然纤维疏解液、耐磨剂和胶乳混合,得到混合料A;
将所述混合料A、絮凝剂、湿强剂和消泡剂按顺序混合,得到混合料B;
将所述混合料B加水稀释,得到浆料;
将所述浆料进行抄造,得到所述耐磨原纸。
在本发明中,所述制备方法中的各组分与上述技术方案所述耐磨原纸各组分一致,在此不再赘述。
本发明将天然纤维进行疏解,得到天然纤维疏解液。在本发明中,所述天然纤维疏解液的质量浓度优选为0.6~2%,更优选为0.7~1.7%,再优选为1~1.5%。在本发明中,所述天然纤维疏解液优选由天然纤维与水混合疏解得到;本发明对所述疏解的时间没有特殊限定,以能够将天然纤维与水混合疏解至纤维全部分散为单根纤维为准。在本发明中,所述疏解的设备优选为打浆机。
得到天然纤维疏解液后,本发明将所述天然纤维疏解液、耐磨剂和胶乳混合,得到混合料A。在本发明中,所述胶乳优选以胶乳稀释液的形式提供;所述胶乳稀释液的质量浓度优选为5~10%,更优选为6~9%,再优选为7~8%。本发明对所述混合的方式没有特殊限定,采用本领域技术人员熟知的混合方式即可。
得到混合料A后,本发明将所述混合料A、絮凝剂、湿强剂和消泡剂混合,得到混合料B。在本发明中,所述絮凝剂优选以絮凝剂稀释液的形式提供;所述絮凝剂稀释液的质量浓度优选为0.5~1%,更优选为0.6~0.9%,再优选为0.7~0.8%。在本发明中,所述湿强剂优选以湿强剂稀释液的形式提供;所述湿强剂稀释液的质量浓度优选为0.5~1%,更优选为0.6~0.9%,再优选为0.7~0.8%。在本发明中,所述消泡剂优选为消泡剂稀释液的形式提供;所述消泡剂稀释液的质量浓度优选为0.5~1%,更优选为0.6~0.9%,再优选为0.7~0.8%。本发明对所述混合没有特殊限定,采用本领域技术人员熟知的混合方式即可,具体的,如搅拌。本发明通过先混合所述天然纤维疏解液、耐磨剂和胶乳,后加入絮凝剂、湿强剂和消泡剂的分步混合方法,防止胶乳、絮凝剂、湿强剂和消泡剂的失效。
得到混合料B后,本发明将所述混合料B稀释,得到浆料。在本发明中,所述稀释用稀释剂优选为水;本发明对所述水没有特殊限定,采用本领域技术人员熟知的水即可,具体的如去离子水、蒸馏水或自来水。本发明对所述稀释的方式没有特殊限定,采用本领域技术人员熟知的稀释方式即可。在本发明中,所述浆料的固含量优选为0.2%~1%,更优选为0.3%~0.8%,再优选为0.4~0.6%。
得到浆料后,本发明将所述浆料进行抄造,得到所述耐磨原纸。在本发明中,所述抄造优选为湿法抄造;所述湿法抄造优选包括湿法成形、压榨、干燥和卷曲。在本发明中,所述抄造的设备优选为长网纸机。在本发明中,所述抄造的纸机车速优选为10~500m/min,网案长度优选为10~30m,宽度优选为200~4000mm,聚酯网目数优选为80~90目,压榨段压力优选为0~0.5MPa,烘缸干燥温度优选为80~110℃。
为了进一步说明本发明,下面结合实施例对本发明提供的耐磨原纸及其制备方法进行详细地描述,但不能将它们理解为对本发明保护范围的限定。显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例
按质量份数计,隔离材料组分为:
耐磨剂42.5份,为325目三氧化二铝;
天然纤维51.2份,为针叶木纤维,打浆度35°SR;
胶乳6.1份,由丁苯胶乳和丁腈胶乳按照质量比为4∶3混合得到;
絮凝剂0.15份,由聚合氯化铝和阳离子聚丙烯酰胺按照质量比为1∶1混合得到;
湿强剂0.15份,为聚酰胺环氧氯丙烷树脂;
消泡剂0.05份,JF-05B型有机硅类消泡剂。
所述耐磨原纸制备方法为:
天然纤维疏解液由天然纤维与水在打浆机中混合疏解得到,天然纤维疏解液的质量浓度为1%;
以水为稀释剂,将胶乳稀释至质量浓度为10%,絮凝剂稀释至质量浓度为1%,湿强剂稀释至质量浓度为1%,消泡剂稀释至质量浓度为1%,备用;
将耐磨剂和稀释后的胶乳加入打浆机中疏解混合,得到混合料A;
将所得混合料A、稀释后的絮凝剂、稀释后的湿强剂和稀释后的消泡剂搅拌混合均匀,得到混合料B;
将所得混合料B加水稀释至固含量为0.5%,得到浆料;
将所得浆料送至长网纸机进行抄造,其中抄造工艺参数为:纸机车速为50m/min,网案长度为15m,宽度为600mm,使用80目的聚酯网,压榨段压力为0.1MPa,烘缸干燥温度为95℃,得到所述耐磨原纸。
按照GB/T451.2-2002对所得耐磨原纸进行定量检测,测试结果为57.0±1.0g/m2;按照GB/T451.3-2002对所得隔离材料进行厚度测试,测试结果为0.126±0.01mm;按照紧度=定量/厚度的关系计算所得隔离材料的紧度,计算结果为0.39±0.05g/cm3;按照GB/T12914-2008测试所得隔离材料的裂断长,测试结果为3.51±0.05km;按照GB/T 742-2003检测所得隔离材料的灰分含量,测得灰分含量为38.6%±1%;按照GB/T465.2-2008测试所得隔离材料的湿强度,测试结果为0.82±0.05km;按照GBT 461.1-2002测试所得隔离材料的纵向吸水高度,测试结果为53mm/10min。
由以上实施例可以看出,相比传统造纸湿法成型工艺,本发明提供的耐磨原纸中灰分(即耐磨剂)含量高,且厚度及定量均匀,抗张强度和湿抗张强度大。本发明提供的制备方法简易、成本低。
以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (9)
1.一种高灰分耐磨原纸,其特征在于,以质量份数计,包括组分:
耐磨剂30~50份;
天然纤维35~60份;
胶乳4.5~11.5份;
絮凝剂0.1~0.3份;
湿强剂0.1~0.3份;
消泡剂0.01~0.1份。
2.根据权利要求1所述的耐磨原纸,其特征在于,所述耐磨剂为三氧化二铝(Al2O3);所述耐磨剂的粒径为325~1250目。
3.根据权利要求1所述的耐磨原纸,其特征在于,所述天然纤维为棉纤维、麻纤维、竹纤维、针叶木纤维中的一种或多种。
4.根据权利要求1所述的耐磨原纸,其特征在于,所述胶乳为丁苯胶乳、丁腈胶乳、丙烯酸胶乳、羧基丁苯胶乳和羧基丁腈胶乳中的一种或多种。
5.根据权利要求1所述的耐磨原纸,其特征在于,所述絮凝剂为聚合氯化铝和阳离子聚丙烯酰胺;所述聚合氯化铝和阳离子聚丙烯酰胺的质量比为(1~2)∶1。
6.根据权利要求1所述的耐磨原纸,其特征在于,所述湿强剂为聚酰胺环氧氯丙烷树脂、聚乙烯亚胺、三聚氰胺甲醛树脂和脲甲醛树脂中的一种或多种。
7.根据权利要求1所述的耐磨原纸,其特征在于,所述消泡剂为有机硅类消泡剂。
8.权利要求1~7任一项所述耐磨原纸的制备方法,其特征在于,包括以下步骤:
将天然纤维进行疏解,得到天然纤维疏解液;
将所述天然纤维疏解液、耐磨剂和胶乳混合,得到混合料A;
将所述混合料A、絮凝剂、湿强剂和消泡剂混合,得到混合料B;
将所述混合料B加水稀释,得到浆料;
将所述浆料进行抄造,得到所述耐磨原纸。
9.根据权利要求8所述的制备方法,其特征在于,所述天然纤维疏解液的质量浓度为0.6~2%;所述浆料的固含量为0.2~1%。
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