CN115917084A - 包括沥青浸渍无纺布的沥青增强材料及利用其的铺装维修方法 - Google Patents

包括沥青浸渍无纺布的沥青增强材料及利用其的铺装维修方法 Download PDF

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CN115917084A
CN115917084A CN202180037391.2A CN202180037391A CN115917084A CN 115917084 A CN115917084 A CN 115917084A CN 202180037391 A CN202180037391 A CN 202180037391A CN 115917084 A CN115917084 A CN 115917084A
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asphalt
layer
woven fabric
emulsion
film layer
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金亨洙
南亨浩
沈成训
高铉东
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Esg Structure Co ltd
Evan Jovan
Esg Industries Ltd
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Esg Structure Co ltd
Evan Jovan
Esg Industries Ltd
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Abstract

本发明涉及一种沥青增强材料,具体地,涉及一种在不进行粘层涂敷及固化过程的情况下,可应用于沥青铺装的沥青增强材料及利用其的沥青铺装维修方法。本发明的沥青增强材料包括:增强纤维层,其形成有多个孔;薄膜层,其为透气性薄膜层或不透气性薄膜层,上述薄膜层由选自由聚丙烯、聚乙烯、乙烯醋酸乙烯酯、聚乙烯弹性体、聚丙烯弹性体、聚丁烯及热塑性聚氨酯组成的组中的一种以上的树脂构成,其熔点为90℃至130℃;以及无纺布层,其位于上述增强纤维层与上述薄膜层之间,浸渍有沥青乳液,且熔点为50℃至130℃。

Description

包括沥青浸渍无纺布的沥青增强材料及利用其的铺装维修方法
技术领域
本发明涉及一种沥青增强材料,具体地,涉及一种维修在不进行粘层(tackcoating)涂敷及固化(curing)过程的情况下,可应用于沥青铺装的沥青增强材料及利用其的沥青铺装维修方法。
背景技术
沥青为数千种以上的高分子碳氢化合物构成得非常复杂的混合物,其还称为沥青混凝土或沥青砼,上述高分子碳氢化合物包含有机混合物及微量无机化合物。若混合碎石或沙子、石粉等和5~6%的沥青并压实,则会变硬且粘稠,由此,可用作道路铺装及沥青砖等的基材。
但是,由于长时间的使用、交通荷载、地面行为、结冰、解冻以及消除冰的氯化物的渗透等,沥青铺装面产生垂直或水平变形,并产生龟裂或坑洼。在此情况下,具有产生巨大的维护维修费用的问题。
当进行沥青施工时,为了防止反射龟裂或抑制塑性变形,应用由增强纤维等构成的沥青增强材料的配置工艺,上述增强纤维由碳纤维、玻璃纤维、芳族聚酰胺纤维、聚酯纤维等构成。增强纤维同时具有弹性及韧性,因此,当应用于沥青施工时,执行延长沥青的寿命的作用。
已经提出了延长沥青寿命的各种沥青增强材料。在韩国授权专利第10-1336333号中公开了一种增强材料,其由聚丙烯材质的无纺布20及设于上述无纺布上的纤维栅网10构成。
并且,在韩国授权专利第10-1427375号中公开了一种沥青增强材料,其由透气性聚乙烯薄膜、形成有多个孔的增强纤维层以及上述薄膜与增强纤维层之间的粘合层构成。
根据由韩国国土交通部发行的“道路铺装维护维修实务手册(2013)”,在维修沥青铺装的过程中进行沥青增强材料的施工,在清扫待维修的沥青基底面或混凝土基底面后,涂敷粘层,并固化规定时间以后,进行增强材料的施工。接着,进行沥青铺设及压实工艺。根据由韩国国土交通部发行的“KCS 44 5010:2016沥青混凝土铺装施工标准规范”,粘层是为了提高与已施工的沥青层或水泥混凝土板或混凝土铺装上铺设的沥青混合物的附着而铺设,其为必须进行的工艺,以提高铺装的上层部(基层)与表层部(沥青或基底层)之间的粘结力,防止水分或异物渗透至基层,赋予防水特性,并提高粘结力,从而提高铺装的强度。但是,粘层在涂敷后,需要1小时~2小时以上的固化时间,若在固化结束之前实施铺装,则自卸卡车或铺装设备移动到粘层上,使得粘层受损,结果,因新旧铺装层的粘结力不足,降低沥青铺装的耐久性,从而降低道路的使用寿命。
发明内容
发明所要解决的问题
本发明为了解决上述现有的粘层施工时出现的问题而提出,其提供一种粘层一体型沥青增强材料及利用其的沥青维修方法,其中,在沥青维修工艺中,清扫基底面后,可在不进行现有的粘层涂敷及固化过程的情况下直接施工。
用于解决问题的方案
上述问题由沥青增强材料解决,上述沥青增强材料包括:增强纤维层,其形成有多个孔;薄膜层,其为透气性薄膜层或不透气性薄膜层,上述薄膜层由选自由聚丙烯、聚乙烯、乙烯醋酸乙烯酯、聚乙烯弹性体、聚丙烯弹性体、聚丁烯及热塑性聚氨酯组成的组中的一种以上的树脂构成,其熔点为90℃至130℃;以及无纺布层,其位于上述增强纤维层与上述薄膜层之间,浸渍有沥青乳液,且熔点为50℃至130℃,上述沥青增强材料的特征在于,上述沥青乳液通过混合第一乳液和第二乳液来制备,上述第一乳液包含改性沥青、固化剂、抗剥离剂及石油树脂,第二乳液包含乳胶、脂肪酸胺盐、氯化钙、盐酸、增稠剂及水,上述沥青乳液的粘度为40~200CP。
优选地,上述粘合层的无纺布能够以50~650g/m2的量浸渍沥青乳液。
并且,优选地,相对于乳液的总重量,上述沥青乳液可包含60重量百分比~70重量百分比的改性沥青、1.0重量百分比~5.0重量百分比的固化剂、0.01重量百分比~0.1重量百分比的抗剥离剂、1.0重量百分比~5.0重量百分比的石油树脂、5.0重量百分比~10.0重量百分比的乳胶、0.1重量百分比~2.0重量百分比的脂肪酸胺盐、0.1重量百分比~2.0重量百分比的氯化钙、0.1重量百分比~1.0重量百分比的盐酸、1.0重量百分比~10.0重量百分比的增稠剂及20重量百分比~30重量百分比的水。
并且,优选地,上述薄膜层的基重可以为10~50g/m2,上述无纺布层可以为聚乙烯纺粘无纺布、聚乙烯熔喷无纺布、共聚酰胺TBCW无纺布、共聚酰胺熔喷无纺布、聚丙烯TBCW无纺布、聚丙烯熔喷无纺布、乙烯醋酸乙烯酯TBCW无纺布或乙烯醋酸乙烯酯熔喷无纺布,上述无纺布层的定量可以为10~50g/m2
并且,优选地,在上述薄膜层为透气性薄膜层的情况下,可包含:树脂,其为选自由聚丙烯、聚乙烯、乙烯醋酸乙烯酯、聚乙烯弹性体、聚丙烯弹性体、聚丁烯及热塑性聚氨酯组成的组中的一种以上;以及无机物,其为选自由碳酸钙、碳酸镁、硫酸镁、硫酸钡、硫酸镁、沸石、滑石、高岭土、氧化锌、二氧化钛、氧化铝、氢氧化铝、氢氧化镁、硅藻土及粘土组成的组中的一种以上。
并且,优选地,上述增强纤维层可以为由纤维构成的栅网,上述纤维为选自由碳纤维、玻璃纤维、玄武岩纤维、凯芙拉纤维、芳族聚酰胺纤维(aramid fiber)及聚酯纤维组成的组中的一种以上。
发明效果
本发明的沥青增强材料容易施工,可省略粘层施工或固化过程,可简单地进行沥青铺装的维修。并且,可通过使用本发明的沥青增强材料,在没有粘层的情况下,也可提高铺装的下层部沥青(中间层或混凝土基底层)与上层部(沥青表层或中间层)之间的粘结力,并可提高增强材料的强度。
附图说明
图1为本发明的沥青增强材料的分解立体图。
图2为概略地示出本发明的沥青增强材料附着于沥青或混凝土基底面的分解立体图。
具体实施方式
除非另行定义,否则在本发明中使用的所有技术术语具有下述定义,并符合本发明所属领域的普通技术人员通常所理解的含义。并且,在本说明书中描述了优选方法或样品,但与此相似或等同的也包含在本发明的范畴内。
术语“约”是指对于参照量、水平、值、数量、频率、百分比、尺寸、大小、量、重量或长度,改变30%、25%、20%、15%、10%、9%、8%、7%、6%、5%、4%、3%、2%或1%左右的量、水平、值、数量、频率、百分比、尺寸、大小、量、重量或长度。
通过本说明书,除非在上下文中另行需要,否则表述“包括”及“包括……的”应理解为包括所提出的步骤或组件、或者步骤或组件的组,并不排除任意其他步骤或组件、或者步骤或组件的组。
本发明涉及一种沥青增强材料。图1为本发明的沥青增强材料的分解立体图。参照图1,上述沥青增强材料100包括:增强纤维层20,其形成有多个孔;薄膜层40,其由透气性聚乙烯薄膜或不透气性聚乙烯薄膜构成;以及无纺布层30,其位于上述增强纤维层与上述薄膜层之间,由浸渍有沥青乳液的无纺布构成。
上述增强纤维层20可以为由纤维构成的栅网,上述纤维为选自由碳纤维、玻璃纤维、玄武岩纤维、凯芙拉纤维(Kevlar fiber)、芳族聚酰胺纤维及聚酯纤维组成的组中的一种以上。
更优选地,上述纤维可以为选自由玻璃纤维、凯芙拉纤维、碳纤维组成的组中的一种以上。本发明的增强纤维的弹性模量及拉伸强度优秀,从而可有效地防止反射龟裂。
为了确保基底面与新沥青铺装的附着力,增强纤维层20可包括孔。孔可通过形态的特异性或针刺法等的后处理来生成,孔的大小虽不受限,但优选地,孔的大小可以为3mm至50mm,孔的大小优选为10mm至30mm。
根据本发明的一实施方式,上述薄膜层40可以为透气性薄膜层或不透气性薄膜层。
上述薄膜层可以为由熔点为50~130℃的树脂形成的薄膜。优选地,上述薄膜可以由选自由聚丙烯、聚乙烯、乙烯醋酸乙烯酯、聚乙烯弹性体(POE)、聚丙烯弹性体(POP)、聚丁烯及热塑性聚氨酯组成的组中的一种以上的树脂构成。通常,聚丙烯以熔点为160℃而周知,但在本发明中,筛选低分子量的聚丙烯来使用,或者使用均聚聚丙烯,从而可制备熔点为50~130℃的薄膜。根据本发明的另一实施方式,薄膜层可使用熔点为90~130℃的聚乙烯树脂。
根据本发明的一实施方式,上述薄膜可以为透气性薄膜或不透气性薄膜。
在透气性薄膜的情况下,相对于薄膜总重量,可混合70重量百分比~40重量百分比的树脂和30重量百分比~60重量百分比的无机物来制备透气性薄膜,上述树脂的熔点为50~130℃。
根据本发明的一实施方式,上述薄膜层的熔点可以为50℃至150℃,更优选地,上述薄膜层的熔点可以为90℃至130℃。沥青的施工温度通常为120℃以上,因此,具有低于其的熔融温度的本发明的薄膜层不使用单独的加热装置,也可在沥青铺设过程中被沥青混合物的热量去除。
上述无机物可以为选自由碳酸钙、碳酸镁、硫酸镁、硫酸钡、碳酸钙、碳酸镁、硫酸镁、硫酸钡、氧化钛、氧化铝、氢氧化铝、氢氧化镁、硅藻土及粘土组成的组中的一种以上。优选地,可使用平均粒径为1.1~4.0μm的无机物,更优选地,可使用平均粒径为1.5~3.0μm的无机物。无机物执行通过形成气孔来赋予透气性作用。在无机物的平均粒径小于1.1μm的情况下,无法获得良好的透气性,当生产时,对挤出设备造成过载,从而可缩短设备的寿命。并且,在无机物的平均粒径大于4.0μm的情况下,在薄膜制备过程中,可能产生撕裂、产生孔、强度降低等的质量缺陷。
在使用透气性薄膜的情况下,在沥青乳剂的固化过程中产生的余热或气体通过覆盖层(cover),从而可缩短固化时间。但是,当应用透气性薄膜时,无机物层可能会限制沥青乳剂层的粘结力提高效果,因此,需要降低无机物的含量的透气性薄膜的配置。
上述薄膜可通过铸造方式、T-型挤出、吹塑挤出等公知的薄膜制备方法制备。更优选地,上述薄膜可通过铸造方式制备。
根据本发明的一实施方式,为了提高与沥青乳液的粘结力,在上述薄膜的表面可实施等离子体表面处理。上述等离子体表面处理可使用公知的方法。
并且,上述薄膜层的基重(basis weight)可以为10g/m2至50g/m2。在薄膜层的基重小于10g/m2的情况下,薄膜的拉伸强度低,容易被建筑设备的轮胎等的外力撕裂,从而无法发挥作用。在薄膜层的基重大于50g/m2的情况下,不产生撕裂等现象,但起到稀释沥青乳液所具有的粘性及粘结力的作用,从而限制沥青乳液本来的作用。
并且,本发明的薄膜层还可包含抗氧化剂、防结块剂(anti-blocking agent)及滑动剂。
上述无纺布层可使用由树脂构成的无纺布来形成,上述树脂为选自由聚丙烯、聚乙烯、共聚酰胺(copolyamide)、乙烯醋酸乙烯酯(ethylene vinyl acetate)、聚乙烯弹性体(polyethylene elastomer,POE)、聚丁烯及热塑性聚氨酯组成的组中的一种以上。根据本发明的一实施方式,上述无纺布层的熔点可以为50~150℃,上述无纺布层的熔点更优选为50~130℃。通常,聚丙烯和聚酰胺的熔点分别为160℃和220℃,但在本发明中,筛选低分子量的聚丙烯或低分子量的聚酰胺共聚物来使用,从而可制备熔点为50~130℃的无纺布。
上述无纺布可以为纺粘无纺布、熔喷无纺布、热粘合梳理网(Through bondedcarded web,TBCW)无纺布、空气穿透粘合梳理网(Through air bonded carded web,TABCW)无纺布或水刺无纺布,优选为熔喷无纺布或TBCW无纺布。
优选地,上述无纺布的基重可以为10g/m2至50g/m2。在无纺布层的基重小于10g/m2的情况下,可能产生如下的问题:由于无纺布层的空间狭窄,沥青乳液吸收量少,由于拉伸强度低,被外力撕裂等。在无纺布的基重大于50g/m2的情况下,会降低沥青乳液所具有的粘性及粘结力。
上述无纺布层的特征在于,浸渍有沥青乳液。
上述沥青乳液可通过利用胶体磨混合第一乳液和第二乳液来制备,上述第一乳液包含改性沥青、固化剂、抗剥离剂及石油树脂,上述第二乳液包含乳胶、脂肪酸胺盐、氯化钙、盐酸、增稠剂及水。
根据本发明的一实施方式,相对于乳液的总重量,上述沥青乳液可包含60重量百分比~70重量百分比的改性沥青、1.0重量百分比~5.0重量百分比的固化剂、0.01重量百分比~0.1重量百分比的抗剥离剂、1.0重量百分比~5.0重量百分比的石油树脂、5.0重量百分比~10.0重量百分比的乳胶、0.1重量百分比~2.0重量百分比的脂肪酸胺盐、0.1重量百分比~2.0重量百分比的氯化钙、0.1重量百分比~1.0重量百分比的盐酸、1.0重量百分比~10.0重量百分比的增稠剂及20重量百分比~30重量百分比的水。
上述固化剂能够以1:1的重量比混合甘油化合物和树脂酸(resin acid)而成。优选地,相对于沥青乳液的总重量,以1.0重量百分比~5.0重量百分比包含固化剂。在固化剂含量小于1.0重量百分比的情况下,沥青乳液的固化时间增加,由此,在制备最终增强材料的步骤中,沥青乳液未固化,导致制备工艺延迟,在配置附加干燥装置的情况下,生产费用增加。在固化剂含量大于5.0重量百分比的情况下,固化时间过于缩短,由此,在浸渍于无纺布之前,在浸渍水槽中,乳液固化而难以连续生产。
优选地,上述增稠剂可使用甲基纤维素。优选地,相对于沥青乳液的总重量,以1.0重量百分比~10.0重量百分比包含上述增稠剂。在增稠剂含量小于1.0重量百分比的情况下,粘度低,导致沥青乳液不易附着于浸渍辊,也不易附着于无纺布。在增稠剂含量大于10.0重量百分比的情况下,沥青乳液的粘度过高,导致难以均匀浸渍于无纺布,且产品缺陷增加。
作为向无纺布浸渍沥青乳液的方法,可使用向水槽添加沥青乳液,并在水槽浸泡无纺布来浸渍的方法;喷射涂敷方法;或者吻辊法等,吻辊法是在旋转辊浸渍沥青乳液后,经过无纺布的上侧来涂敷沥青乳液。
根据本发明的一实施方式,上述无纺布层为以50~650g/m2的量浸渍沥青乳液的无纺布。根据本发明的一实施方式,在非切割表面的情况下,可使用以50~350g/m2的量浸渍沥青乳液的无纺布,在切割表面的情况下,可使用以150~650g/m2的量浸渍沥青乳液的无纺布。
根据沥青混凝土铺装施工标准规范[KCS 44 50 10:2016,韩国国土交通部],明确了道路铺装时的沥青剂(粘层剂)的涂敷量为0.3~0.6l/m2。考虑到通常的沥青剂(粘层剂)包含约50%的水,实际固体成分含量相当于150~300g/m2
非切割表面为混凝土或沥青道路的表层,道路的表层干净,且孔隙率小,因此,通常在进行粘层涂敷后不会丢失。因此,即使根据粘层剂标准涂敷量的最小水平涂敷,也不会妨碍粘层充分发挥其作用。因此,在非切割表面的情况下,可使用沥青乳液的浸渍量为50~350g/m2的无纺布。
在切割表面的情况下,在损坏受损的表层的过程中产生的粉尘或石粉在清扫后也可能会存在,基层或中间层的孔隙率大,因此,粘层剂渗透而使粘层剂的流失较大。因此,优选地,在本发明中,用于切割表面的无纺布需以150~650g/m2的量浸渍沥青乳液。
浸渍有沥青乳液的无纺布层的厚度可以为0.1mm至5mm。
层压上述无纺布层和薄膜层后,浸渍沥青乳液,或者,可在无纺布浸渍沥青乳液后,与薄膜层压。
作为层压方法,有如下的方法:通过液相涂敷、微孔涂敷、慢涂敷、喷涂、吻辊涂敷等的方法将粘结剂涂敷在薄膜层的一侧面后,层压无纺布。上述粘结剂可使用聚乙烯、聚丙烯、热塑性聚氨酯、SBS、SIS等的橡胶、乙烯醋酸乙烯酯共聚物(EVA)、POE等,粘合层的基重可以为0.5~15g/m2
根据再一实施方式,上述薄膜层和无纺布层可通过热层压、超声波层压等方法粘结。
根据另一实施方式,层压薄膜层和无纺布后,可使用喷涂法;或者吻辊法等,吻辊法是在接触的辊涂敷沥青乳液后,在无纺布的一侧面附着沥青乳液。
在本发明中,使用在无纺布浸渍沥青乳液的无纺布层,因此,在沥青维修工艺中,可代替现有的粘层,并可向薄膜层与增强材料层之间提供足够的粘结力。并且,包含沥青乳液的无纺布位于增强材料与薄膜层之间,因此,当为了保管成品而以辊形态卷绕时,通过增强材料(增强纤维层)的厚度和薄膜层的存在而容易分离。
在现有的沥青维修工艺中,涂敷粘层后,配置增强材料,在产生未配置增强材料的区域的情况下,当自卸卡车等经过暴露的粘层时,粘层附着于轮胎,因此,在增强材料配置区域,增强材料可被粘层的粘结力受损。但是,本发明的增强材料无需涂敷粘层,在由浸渍有沥青乳液的无纺布构成的增强材料上形成薄膜层,因此,不发生这种问题。并且,在进行铺装施工期间,粘层不会因雨、雪等流失,并可阻隔从外部环境流入的异物。
根据本发明的一实施方式,本发明的沥青增强材料可通过如下的方式制备:准备上述增强纤维层及由上述聚乙烯薄膜构成的薄膜层后,在其之间配置上述沥青乳液浸渍无纺布层,并利用辊等层压。根据另一实施方式,在本发明的沥青增强材料中,层压薄膜层和无纺布层,将无纺布层的另一面(薄膜层的相对面)配置于增强材料后,可利用辊等层压。
根据本发明的一实施方式,提供利用本发明的沥青增强材料维修沥青的方法。上述方法包括:步骤S11,清扫现有的待维修的基底面10;步骤S12,配置本发明的沥青增强材料100;以及步骤S13,在上述沥青增强材料上铺设新沥青50。
以下,具体说明各步骤。
首先,清扫待维修的道路的基底面10(S11)。道路的基底面可包括现有的沥青基底面、切割或平坦沥青基底面、混凝土基底面或混凝土切割基底面或铁基底面。去除道路基底面的异物的步骤是为了预防新旧铺装层的粘结力因异物降低,且后续铺设作业变得不便的问题。
接着,配置本发明的沥青增强材料100(S12)。以上述沥青增强材料的增强纤维层与道路铺装面相接触且薄膜层朝向上部的方式配置。上述沥青增强材料在粘合层包含沥青乳液,因此无需单独的粘层涂敷或固化过程。
最后,在上述沥青增强材料上铺设新沥青50(S13)。若铺设结束,则实施压实及固化。优选地,新沥青以20mm至110mm的厚度铺设,但可根据道路情况调节厚度。
以下,通过实施例及比较例更加具体地说明本发明,但本发明的权利范围并不由这些实施例限制。
实验例1
为了评估本发明的沥青乳液的固化时间,由下述表1的组分制备3种沥青乳液,并浸渍于无纺布后,进行固化测试。在表2示出其结果。
在评估方法中,在相同大小的容器添加1L的实施例1、1L的比较例1及1L的比较例2的乳液,并准备了相同规格(25g/m2)及大小的无纺布样品(50cm×50cm)。将无纺布样品放入沥青乳液中,浸渍约30秒后取出,将其放置在25±2℃的温度及50±10%的湿度中,并测定固化时间。
表1
Figure BDA0003958767720000101
表2
Figure BDA0003958767720000102
Figure BDA0003958767720000111
参照上述表1可确认,在比较例1的情况下,沥青乳液的固化时间为3.52分钟,在实施例1的情况下,沥青乳液的固化时间2.5分钟以内。
实验例2
为了评估本发明的沥青乳液的粘度,由下述表3的组分制备3种沥青乳液,并浸渍于无纺布后,进行固化测试。在表4示出其结果。
在评估方法中,粘度测定通过使用布氏粘度测量仪来进行。方法及步骤如下:将用于试验的液相样品放入样品腔室后,在25℃的条件下保管30分钟,并使其老化(aging)。将布氏粘度测量仪的转子(spindle)放入具有老化的样品的腔室内后,在25℃的条件下老化30分钟。之后,启动布氏粘度测量仪来调整RPM并测定粘度值。
表3
Figure BDA0003958767720000112
Figure BDA0003958767720000121
表4
分类 平均粘度(CP)
实施例1-1 103
实施例1-2 105
实施例1-3 101
实施例1平均 103
比较例1-1 56
比较例1-2 49
比较例1-3 52
比较例1平均 52
比较例2-1 303
比较例2-2 299
比较例2-3 301
比较例2平均 301
参照上述表4可确认,在增稠剂含量为0.5重量百分比、改性沥青含量为55重量百分比的比较例1的情况下,粘度平均仅为52cp,在增稠剂含量为12重量百分比、改性沥青含量为73重量百分比的比较例2的情况下,粘度平均高达301cp。
实验例3
为了评估本发明的沥青乳液固化,由表3的组分制备3种沥青乳液,并浸渍于无纺布后,进行固化测试。在表5示出其结果。
在评估方法中,在沥青乳液的情况下,使用上述表3的实施例1、比较例1及比较例2的乳液。将50L的乳液分别装入水槽来准备。并且准备了:层压将共聚酰胺作为原料的TBCW无纺布(熔点为110℃以下,25g/m2)和线性低密度聚乙烯薄膜(熔点为110℃,不透气性,20g/m2)的样品以及层压将共聚酰胺作为原料的TBCW无纺布(熔点为110℃以下,45g/m2)和线性低密度聚乙烯薄膜(熔点为110℃,不透气性,20g/m2)的样品。上述无纺布和薄膜以1.8m的宽度层压,应用吻辊方式,在以2m/分钟的速度移动的同时在无纺布浸渍沥青乳液。当测试时,干燥及固化区间为10m,其中,以约100℃的表面温度加热干燥2m区间。
表5
Figure BDA0003958767720000131
参照上述表5可确认,在浸渍实施例1的情况下,乳液的固化水平良好,且达到可用作产品的水平。但是,在浸渍比较例1的情况下,在100℃的温度下进行干燥的固化过程中,发生过度干燥以致薄膜及无纺布熔化,无法产品化。并且,在浸渍比较例2的情况下,粘度过高,沥青乳液以过多的量浸渍于无纺布,导致未固化而无法产品化。以上,详细描述了本发明的特定部分,对于本领域普通技术人员而言显而易见的是,这种具体描述仅为优选体现例,本发明的范围并不局限于此。因此,本发明的实质范围由权利要求及其等同技术方案定义。
附图标记的说明
10:道路基底面10;100:沥青增强材料;20:增强纤维层;30:粘合层(浸渍的无纺布层);40:薄膜层;50:新沥青。

Claims (7)

1.一种沥青增强材料,其包括:
增强纤维层,其形成有多个孔;
薄膜层,其为透气性薄膜层或不透气性薄膜层,所述薄膜层由选自由聚丙烯、聚乙烯、乙烯醋酸乙烯酯、聚乙烯弹性体、聚丙烯弹性体、聚丁烯及热塑性聚氨酯组成的组中的一种以上的树脂构成,其熔点为90℃至130℃;以及
无纺布层,其位于所述增强纤维层与所述薄膜层之间,浸渍有沥青乳液,且熔点为50℃至130℃,
所述沥青增强材料的特征在于,
所述沥青乳液通过混合第一乳液和第二乳液来制备,所述第一乳液包含改性沥青、固化剂、抗剥离剂及石油树脂,第二乳液包含乳胶、脂肪酸胺盐、氯化钙、盐酸、增稠剂及水,所述沥青乳液的粘度为40~200CP。
2.根据权利要求1中所述的沥青增强材料,其特征在于,
所述粘合层的无纺布以50~650g/m2的量浸渍沥青乳液。
3.根据权利要求1中所述的沥青增强材料,其特征在于,
相对于乳液的总重量,所述沥青乳液包含60重量百分比~70重量百分比的改性沥青、1.0重量百分比~5.0重量百分比的固化剂、0.01重量百分比~0.1重量百分比的抗剥离剂、1.0重量百分比~5.0重量百分比的石油树脂、5.0重量百分比~10.0重量百分比的乳胶、0.1重量百分比~2.0重量百分比的脂肪酸胺盐、0.1重量百分比~2.0重量百分比的氯化钙、0.1重量百分比~1.0重量百分比的盐酸、1.0重量百分比~10.0重量百分比的增稠剂及20重量百分比~30重量百分比的水。
4.根据权利要求1中所述的沥青增强材料,其特征在于,
所述薄膜层的基重为10~50g/m2
所述无纺布层为聚乙烯纺粘无纺布、聚乙烯熔喷无纺布、共聚酰胺热粘合梳理网无纺布、共聚酰胺熔喷无纺布、聚丙烯热粘合梳理网无纺布、聚丙烯熔喷无纺布、乙烯醋酸乙烯酯热粘合梳理网无纺布或乙烯醋酸乙烯酯熔喷无纺布,所述无纺布层的基重为10~50g/m2
5.根据权利要求1中所述的沥青增强材料,其特征在于,
在所述薄膜层为透气性薄膜层的情况下,包含:树脂,其为选自由聚丙烯、聚乙烯、乙烯醋酸乙烯酯、聚丁烯及热塑性聚氨酯组成的组中的一种以上;以及无机物,其为选自由碳酸钙、碳酸镁、硫酸镁、硫酸钡、硫酸镁、沸石、滑石、高岭土、氧化锌、二氧化钛、氧化铝、氢氧化铝、氢氧化镁、硅藻土及粘土组成的组中的一种以上。
6.根据权利要求1中所述的沥青增强材料,其特征在于,
所述增强纤维层为由纤维构成的栅网,所述纤维为选自由碳纤维、玻璃纤维、玄武岩纤维、凯芙拉纤维、芳族聚酰胺纤维及聚酯纤维组成的组中的一种以上。
7.一种沥青铺装维修方法,其特征在于,包括下述步骤:
清扫待维修的基底面;
配置根据权利要求1至6中任一项所述的沥青增强材料;
在所述沥青增强材料上铺设沥青;以及
进行压实及固化。
CN202180037391.2A 2021-06-03 2021-11-15 包括沥青浸渍无纺布的沥青增强材料及利用其的铺装维修方法 Pending CN115917084A (zh)

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