CN109468857A - 一种农用防寒无纺布 - Google Patents
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Abstract
本发明提供一种农用防寒无纺布,涉及无纺布领域,其原料为:聚丙烯、聚酯纤维、聚酰亚胺纤维、聚氨酯纤维、纤维素、石蜡、微晶体蜡、果胶质和抗氧剂,其制备步骤为:(1)高温熔融(2)成丝(3)冷却(4)成网(5)搅拌(6)涂覆(7)成品加工。本发明通过设计一种农用防寒无纺布,该无纺布材料中加入石蜡和微晶体蜡的混合体,并将其制成涂料按照蜂窝的形状,以不同角度的多层涂覆到无纺布上,同时通过蜂窝式的多角度涂覆,能够尽可能的缩小无纺布中的透气孔的直径,这样的设置不仅能够增加该无纺布的透气性能而且能够达到良好的防水性能。
Description
技术领域
本发明涉及无纺布领域,尤其涉及一种农用防寒无纺布。
背景技术
无纺布又称不织布,是由定向的或随机的纤维而构成。因具有布的外观和某些性能而称其为布。无纺布具有防潮、透气、柔韧、质轻、不助燃、容易分解、无毒无刺激性、色彩丰富、价格低廉、可循环再用等特点。如多采用聚丙烯(pp材质)粒料为原料,经高温熔融、喷丝、铺纲、热压卷取连续一步法生产而成。
无纺布是一种非织造布,它是直接利用高聚物切片、短纤维或长丝将纤维通过气流或机械成网,然后经过水刺,针刺,或热轧加固,最后经过后整理形成的无编织的布料。
我国90%的园区建立在丘陵山地,土层浅薄,水土流失严重。利用覆膜栽培包括地膜覆盖、避雨棚、保温塑料棚和树冠覆膜等简易设施栽培,不仅可有效防止水土流失,还可对果树生长起到避雨、保温和防病的作用。然而,传统的塑料膜透气和透水性差,阴雨天气易引发沤根,阳光强烈时使用不当还会灼伤作物,且无纺布在研制的过程中,需要对其进行干燥和冷却,然而这两个过程极易造成无纺布的变形,从而影响无纺布的后期使用。研发和生产新型材料已势在必行。
发明内容
本发明的目的在于提供一种农用防寒无纺布,以解决上述技术问题。
本发明为解决上述技术问题,采用以下技术方案来实现:
一种农用防寒无纺布,其特征在于:由如下重量配比的原料制成:
聚丙烯50-60份、聚酯纤维10-15份、聚酰亚胺纤维10-15份、聚氨酯纤维10-15份、纤维素8-10份、石蜡1-3份、微晶体蜡1-3份、果胶质3-5份和抗氧剂3-5份。
优选的,所述防寒无纺布由以下质量份数的各组分组成:聚丙烯55份、聚酯纤维15份、聚酰亚胺纤维13份、聚氨酯纤维13份、纤维素9份、石蜡2份、微晶体蜡2份、果胶质4份、抗氧剂4份。
优选的,所述一种农用防寒无纺布及其制作方法,包括如下步骤:
(1)将聚丙烯、聚酯纤维、纤维素、果胶质和抗氧剂按照配方比例放入到螺旋搅拌机内进行搅拌混合,同时将温度升至160-170度,从而能够使得物料之间成为均匀的熔融流体状态;
(2)将熔融后的流体通过过滤器进行过滤,过滤后进入到纺丝箱内,随后熔融后的流体经过喷丝板挤出成丝;
(3)先通过液氮制冷机对丝状材料从上至下进行预冷却,此过程要保证冷却速度慢且均匀,制冷时间为1-2分钟,然后将丝状材料平铺,并通过自然风进行二次冷却5-10分钟;
(4)经过冷却之后的丝状材料进入到成网机;成网之后的无纺布依次经过上下压辊的预加固和轧机热轧的再次加固;加固成型的无纺布浸泡于75%的消毒水中5-10分钟,烘干备用。
(5)将石蜡、微晶体蜡和聚氨酯纤维按照配方比例加入到水溶液中,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料A,然后对其进行降温,随后再向防水材料中加入聚酰亚胺纤维,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料B。
(6)在紫外线的照射下,将涂料B在按照蜂窝的形状涂覆在步骤(4)中的无纺布的双面上,并且涂覆的过程中,将涂料B进行多层涂覆。
(7)将涂覆结束后的无纺布,进行干燥,并称重包装,成品入库。
优选的,所述步骤(7)中的干燥是通过干燥器先对无纺布的四个边角进行干燥,然后再对无纺布的中间位置处进行均匀且缓慢的干燥。
优选的,所述步骤(6)中涂料B分别对无纺布的两面进行多层涂覆,且每层涂覆与上一层涂覆的角度均不一致。
优选的,所述抗氧剂为二烷基二硫代磷酸锌。
本发明的有益效果是:
本发明通过设计一种农用防寒无纺布,该无纺布材料中加入石蜡和微晶体蜡的混合体,并将其制成涂料按照蜂窝的形状,以不同角度的多层涂覆到无纺布上,同时通过蜂窝式的多角度涂覆,能够尽可能的缩小无纺布中的透气孔的直径,且石蜡和微晶体蜡混合体的熔点相较于普通的石蜡较高,这样的设置不仅能够增加该无纺布的透气性能而且能够达到良好的防水性能,其次,通过液氮进行慢速均匀的预冷却,时常为1-2分钟,然后再通过自然风再次冷却,这样的方式能够防止丝状材料快速降温造成材料的变形,通过先对边角进行干燥再对内部进行干燥的方式,能够防止无纺布在制作过程中,布料发生缩孔和变形。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明,但下述实施例仅仅为本发明的优选实施例,并非全部。基于实施方式中的实施例,本领域技术人员在没有做出创造性劳动的前提下所获得其它实施例,都属于本发明的保护范围。下述实施例中的实验方法,如无特殊说明,均为常规方法,下述实施例中所用的材料、试剂等,如无特殊说明,均可从商业途径得到。
实施例1
一种农用防寒无纺布,按重量组份计,由如下配比的原料制成:
聚丙烯55份、聚酯纤维15份、聚酰亚胺纤维13份、聚氨酯纤维13份、纤维素9份、石蜡2份,微晶体蜡2份、果胶质4份、抗氧剂4份。
包括如下步骤:
(1)将聚丙烯、聚酯纤维、纤维素、果胶质和抗氧剂按照配方比例放入到螺旋搅拌机内进行搅拌混合,同时将温度升至160-170度,从而能够使得物料之间成为均匀的熔融流体状态;
(2)将熔融后的流体通过过滤器进行过滤,过滤后进入到纺丝箱内,随后熔融后的流体经过喷丝板挤出成丝;
(3)先通过液氮制冷机对丝状材料从上至下进行预冷却,此过程要保证冷却速度慢且均匀,制冷时间为1-2分钟,然后将丝状材料平铺,并通过自然风进行二次冷却5-10分钟;
(4)经过冷却之后的丝状材料进入到成网机;成网之后的无纺布依次经过上下压辊的预加固和轧机热轧的再次加固;加固成型的无纺布浸泡于75%的消毒水中5-10分钟,烘干备用。
(5)将石蜡、微晶体蜡和聚氨酯纤维按照配方比例加入到水溶液中,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料A,然后对其进行降温,随后再向防水材料中加入聚酰亚胺纤维,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料B。
(6)在紫外线的照射下,将涂料B在按照蜂窝的形状涂覆在步骤(4)中的无纺布的双面上,并且涂覆的过程中,将涂料B进行多层涂覆。
(7)将涂覆结束后的无纺布,进行干燥,并称重包装,成品入库。
步骤(7)中的干燥是通过干燥器先对无纺布的四个边角进行干燥,然后再对无纺布的中间位置处进行均匀且缓慢的干燥。步骤(6)中涂料B分别对无纺布的两面进行多层涂覆,且每层涂覆与上一层涂覆的角度均不一致。抗氧剂为二烷基二硫代磷酸锌。
实施例2
一种农用防寒无纺布,按重量组份计,由如下配比的原料制成:
聚丙烯51份、聚酯纤维10份、聚酰亚胺纤维11份、聚氨酯纤维10份、纤维素9份、石蜡1份、微晶体蜡1份、果胶质3份、抗氧剂3份。
包括如下步骤:
(1)将聚丙烯、聚酯纤维、纤维素、果胶质和抗氧剂按照配方比例放入到螺旋搅拌机内进行搅拌混合,同时将温度升至160-170度,从而能够使得物料之间成为均匀的熔融流体状态;
(2)将熔融后的流体通过过滤器进行过滤,过滤后进入到纺丝箱内,随后熔融后的流体经过喷丝板挤出成丝;
(3)先通过液氮制冷机对丝状材料从上至下进行预冷却,此过程要保证冷却速度慢且均匀,制冷时间为1-2分钟,然后将丝状材料平铺,并通过自然风进行二次冷却5-10分钟;
(4)经过冷却之后的丝状材料进入到成网机;成网之后的无纺布依次经过上下压辊的预加固和轧机热轧的再次加固;加固成型的无纺布浸泡于75%的消毒水中5-10分钟,烘干备用。
(5)将石蜡、微晶体蜡和聚氨酯纤维按照配方比例加入到水溶液中,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料A,然后对其进行降温,随后再向防水材料中加入聚酰亚胺纤维,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料B。
(6)在紫外线的照射下,将涂料B在按照蜂窝的形状涂覆在步骤(4)中的无纺布的双面上,并且涂覆的过程中,将涂料B进行多层涂覆。
(7)将涂覆结束后的无纺布,进行干燥,并称重包装,成品入库。
步骤(7)中的干燥是通过干燥器先对无纺布的四个边角进行干燥,然后再对无纺布的中间位置处进行均匀且缓慢的干燥。步骤(6)中涂料B分别对无纺布的两面进行多层涂覆,且每层涂覆与上一层涂覆的角度均不一致。抗氧剂为二烷基二硫代磷酸锌。
实施例3
一种农用防寒无纺布,按重量组份计,由如下配比的原料制成:
聚丙烯60份、聚酯纤维15份、聚酰亚胺纤维15份、聚氨酯纤维15份、纤维素10份、石蜡3份、微晶体蜡3份、果胶质5份、抗氧剂5份。
包括如下步骤:
(1)将聚丙烯、聚酯纤维、纤维素、果胶质和抗氧剂按照配方比例放入到螺旋搅拌机内进行搅拌混合,同时将温度升至160-170度,从而能够使得物料之间成为均匀的熔融流体状态;
(2)将熔融后的流体通过过滤器进行过滤,过滤后进入到纺丝箱内,随后熔融后的流体经过喷丝板挤出成丝;
(3)先通过液氮制冷机对丝状材料从上至下进行预冷却,此过程要保证冷却速度慢且均匀,制冷时间为1-2分钟,然后将丝状材料平铺,并通过自然风进行二次冷却5-10分钟;
(4)经过冷却之后的丝状材料进入到成网机;成网之后的无纺布依次经过上下压辊的预加固和轧机热轧的再次加固;加固成型的无纺布浸泡于75%的消毒水中5-10分钟,烘干备用。
(5)将石蜡、微晶体蜡和聚氨酯纤维按照配方比例加入到水溶液中,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料A,然后对其进行降温,随后再向防水材料中加入聚酰亚胺纤维,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料B。
(6)在紫外线的照射下,将涂料B在按照蜂窝的形状涂覆在步骤(4)中的无纺布的双面上,并且涂覆的过程中,将涂料B进行多层涂覆。
(7)将涂覆结束后的无纺布,进行干燥,并称重包装,成品入库。
步骤(7)中的干燥是通过干燥器先对无纺布的四个边角进行干燥,然后再对无纺布的中间位置处进行均匀且缓慢的干燥。步骤(6)中涂料B分别对无纺布的两面进行多层涂覆,且每层涂覆与上一层涂覆的角度均不一致。抗氧剂为二烷基二硫代磷酸锌。
通过对实施例1-3所制作的农用防寒无纺布进行检测,得到以下检测结果:
测试项目 | 实施例一 | 实施例二 | 实施例三 |
柑橘缩水率 | 5% | 7% | 7% |
分析实验数据:
将该防寒无纺布覆盖柑橘到树冠上,经过一段时间的观察得出,实施例1中配比可使得柑橘的缩水率减少至5%,实施例2与实施例3中的配比可使得柑橘的缩水率减少至7%,由此可得出,实施例1配得的无纺布为最佳方案。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的仅为本发明的优选例,并不用来限制本发明,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (6)
1.一种农用防寒无纺布,其特征在于:由如下重量配比的原料制成:
聚丙烯50-60份、聚酯纤维10-15份、聚酰亚胺纤维10-15份、聚氨酯纤维10-15份、纤维素8-10份、石蜡1-3份、微晶体蜡1-3份、果胶质3-5份和抗氧剂3-5份。
2.根据权利要求1所述的一种农用防寒无纺布,其特征在于:所述防寒无纺布由以下质量份数的各组分组成:聚丙烯55份、聚酯纤维15份、聚酰亚胺纤维13份、聚氨酯纤维13份、纤维素9份、石蜡2份、微晶体蜡2份、果胶质4份、抗氧剂4份。
3.一种权利要求1所述农用防寒无纺布的制备方法,其特征在于:包括如下步骤:
(1)将聚丙烯、聚酯纤维、纤维素、果胶质和抗氧剂按照配方比例放入到螺旋搅拌机内进行搅拌混合,同时将温度升至160-170度,从而能够使得物料之间成为均匀的熔融流体状态;
(2)将熔融后的流体通过过滤器进行过滤,过滤后进入到纺丝箱内,随后熔融后的流体经过喷丝板挤出成丝;
(3)先通过液氮制冷机对丝状材料从上至下进行预冷却,此过程要保证冷却速度慢且均匀,制冷时间为1-2分钟,然后将丝状材料平铺,并通过自然风进行二次冷却5-10分钟;
(4)经过冷却之后的丝状材料进入到成网机,成网之后的无纺布依次经过上下压辊的预加固和轧机热轧的再次加固,加固成型的无纺布浸泡于75%的消毒水中5-10分钟,烘干备用:
(5)将石蜡、微晶体蜡和聚氨酯纤维按照配方比例加入到水溶液中,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料A,然后对其进行降温,随后再向防水材料中加入聚酰亚胺纤维,并进行充分混合搅拌,搅拌时间为0.5-1h,得到涂料B;
(6)在紫外线的照射下,将涂料B在按照蜂窝的形状涂覆在步骤(4)中的无纺布的双面上,并且涂覆的过程中,将涂料B进行多层涂覆;
(7)将涂覆结束后的无纺布,进行干燥,并称重包装,成品入库。
4.根据权利要求3所述的制备方法,其特征在于:所述步骤(7)中的干燥是通过干燥器先对无纺布的四个边角进行干燥,然后再对无纺布的中间位置处进行均匀且缓慢的干燥。
5.根据权利要求3所述的制备方法,其特征在于:所述步骤(6)中涂料B分别对无纺布的两面进行多层涂覆,且每层涂覆与上一层涂覆的角度均不一致。
6.根据权利要求3所述的制备方法,其特征在于:所述抗氧剂为二烷基二硫代磷酸锌。
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