CN117261378A - 一种防火隔热复合面料及其在消防服中的应用 - Google Patents

一种防火隔热复合面料及其在消防服中的应用 Download PDF

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CN117261378A
CN117261378A CN202311567669.4A CN202311567669A CN117261378A CN 117261378 A CN117261378 A CN 117261378A CN 202311567669 A CN202311567669 A CN 202311567669A CN 117261378 A CN117261378 A CN 117261378A
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张登厚
程有冬
张毅
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Sichuan Lihuoshengfu Technology Co ltd
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Abstract

本发明涉及防火隔热复合面料技术领域,公开了一种防火隔热复合面料及其在消防服中的应用,包括由内向外的基布、隔热层和防火层,基布与隔热层、隔热层与防火层之间均设置有粘结剂层,所述粘结剂采用改性酚醛树脂,所述改性酚醛树脂具有优异的粘结性、热稳定性、阻燃性和保温隔热性能。本发明还公开了该复合面料的制备方法,具体为:利用粘结剂将基布、隔热层和防火层依次进行粘结、压合,即得。本发明提供的复合面料具有优异的阻燃性能、热稳定性能、保温隔热性能和防护性能。

Description

一种防火隔热复合面料及其在消防服中的应用
技术领域
本发明属于防火隔热复合面料技术领域,具体涉及一种防火隔热复合面料及其在消防服中的应用。
背景技术
消防服是一种专门用于消防员工作的防护服装,它具有防火、隔热、防护等功能,能够有效保护消防员的生命安全。根据不同的功能和材质,消防服可以分为以下几类,防火隔热服、化学防护服、防静电服、防尘服,其中防火隔热服主要用于高温、火灾等环境下,能够有效抵御火焰和高温的侵袭,防火隔热服通常由多层防火材料制成,外层可以防止火焰直接接触皮肤,内层则具有较好的隔热保温性能。
申请号为CN201910784534.0的专利提供了一种防火、隔音隔热面料,包括以下原料:纤维、芳纶纤维、气相二氧化硅、黏合剂、柔软剂、马来酰亚胺、表面活性剂,该发明通过芳砜纶纤维、双酚A型环氧树脂、烷基芳基有机硅树脂协同增效,提高面料的阻燃性能,同时通过环氧基硅氧烷与马来酰亚胺相互作用,还有效解决了面料易滴落、易起毛起球的问题,该发明以顺-1,4-聚异戊二烯为胶黏剂,但是顺-1,4-聚异戊二烯没有阻燃性,在较高的火场温度环境下会遭到破坏,进而使面料失去防护功能。申请号为CN201811255484.9的专利提供了一种防火隔热面料的生产工艺,按照基布、隔热层和防火外层的顺序,利用制得的混合有疏水性SiO2气凝胶颗粒的粘结剂,将基布、隔热层和防火外层进行粘结、压合,制得所需产品,该发明提供的防火隔热面料具有良好的耐高温性能和隔热性能,其中粘结剂采用无机粘结剂,虽然无机粘结剂可以形成很强的化学键,但在粘合过程中常常存在一些间隙和裂缝,导致粘结强度较低,对材料的粘结效果较差,进而影响到面料产品的综合性能。
因此,为适应高温、火灾等特殊环境,迫切需要开发一种阻燃性能、热稳定性能、保温隔热性能、防护性能优异的面料产品。
发明内容
针对现有技术的不足,本发明的目的在于提供一种防火隔热复合面料,该复合面料具有优异的阻燃性能、热稳定性能、保温隔热性能和防护性能;本发明还提供了该复合面料的制备方法。
本发明为实现上述目的所采取的技术方案为:
一种防火隔热复合面料,包括由内向外的基布、隔热层和防火层,基布与隔热层、隔热层与防火层之间均设置有粘结剂层,所述粘结剂采用改性酚醛树脂,所述改性酚醛树脂的制备方法如下:
S1、将2H-1,4-苯并恶嗪-3(4H)-酮分散于丙酮中,依次加入苄基三乙基氯化铵、氢氧化钾、6-羟基-8-氯辛酸,升温至60-80℃,搅拌反应4-7h,调节pH为6-7,过滤,取滤液,经减压蒸馏、萃取、浓缩、干燥,得到中间体1;
S2、将步骤S1所得中间体1分散于N,N-二甲基甲酰胺中,依次加入乙酸铬、2-羟基苯基缩水甘油醚,升温至80-100℃,搅拌反应7-10h,调节pH为6-7,过滤,取滤液,经萃取、浓缩、干燥,得到中间体2;
S3、将步骤S2所得中间体2分散于N,N-二甲基甲酰胺中,加入磷酸,升温至65-85℃,搅拌反应6-10h,经萃取、浓缩、干燥,得到改性苯酚;
S4、将步骤S3所得改性苯酚与苯酚、甲醛水溶液混合均匀,在搅拌条件下,用氨水调节pH为7.5-8.5,升温至65-80℃,搅拌反应0.5-1.5h,再升温至95-105℃,继续搅拌反应0.5-1.5h,然后依次加入γ-氨丙基三乙氧基硅烷、气相二氧化硅,继续搅拌反应0.5-1.5h,经减压抽滤,即得改性酚醛树脂;
改性苯酚的合成路线如下:
本发明以2H-1,4-苯并恶嗪-3(4H)-酮、6-羟基-8-氯辛酸为起始原料,在苄基三乙基氯化铵、氢氧化钾作用下,发生N-烷基化反应,得到中间体1;在乙酸铬作用下,中间体1与2-羟基苯基缩水甘油醚发生环氧化合物的开环反应,得到中间体2,中间体2结构中含有羟基,进一步与磷酸发生酯化反应,即得改性苯酚;将改性苯酚、苯酚、甲醛混合反应,得到酚醛预聚物,酚醛预聚物与γ-氨丙基三乙氧基硅烷、气相二氧化硅水解、缩合,即得改性酚醛树脂。
为了得到改性酚醛树脂,提高其耐热阻燃、隔热保温性能,步骤S1中所述2H-1,4-苯并恶嗪-3(4H)-酮、苄基三乙基氯化铵、氢氧化钾、6-羟基-8-氯辛酸的摩尔比为1.2:0.03-0.06:0.8-1.1:0.9-1.2,丙酮中2H-1,4-苯并恶嗪-3(4H)-酮的加入量为0.1-0.2g/mL;步骤S2中所述中间体1、乙酸铬、2-羟基苯基缩水甘油醚的摩尔比为1:1.0-1.4:0.01-0.03,N,N-二甲基甲酰胺中中间体1的加入量为0.12-0.18g/mL;步骤S3中所述中间体2、磷酸的摩尔比为1:2.0-2.4,N,N-二甲基甲酰胺中中间体2的加入量为0.24-0.30g/mL;步骤S4中所述改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷的摩尔比为0.08-0.12:0.8-1.1:1.1-1.3:0.08-0.12,气相二氧化硅的质量为改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷总质量的2-5%。
有机粘结剂多为高聚合物,具有良好的粘结性能和耐久性,但高聚物作材料使用时最大弱点之一是耐热性较差。交联改性是一种提高聚合物耐热性的方法,通过引入交联原料对聚合物进行交联改性,可以增强聚合物分子间的交联作用,从而提高其热稳定性和热形态稳定性,交联改性的方法包括辐射交联、化学交联等;填充剂改性也是一种提高聚合物耐热性的方法,填充剂通常指一种细小颗粒状的无机颗粒物,如二氧化硅、氧化铝等,填充剂的加入可以减缓热熔解程度,提高产品焦耳热和热塑变形温度;此外,增加高分子链的刚性,如引入不饱和共价键或环状结构(脂环、芳环、杂环)、极性基团等,也能有效提高聚合物耐热性。以气相二氧化硅复合其他材料制备保温材料,通过自身密闭多孔结构有效阻挡热量传导,从而降低涂层导热系数,能够解决特殊工作环境的保温隔热要求。
进一步,所述基布包括以下重量份数的原料:80-90份芳纶1313、1-4份芳纶1414,基布面密度为260-280g/m2,厚度为1.5-2.0mm;所述隔热层包括以下重量份数的原料:50-60份玻璃纤维、25-35份矿棉纤维,隔热层面密度为100-145g/m2,厚度为0.5-0.8mm;所述防火层包括以下重量份数的原料:5-10份芳砜纶纤维、40-70份芳纶1313和2-4份芳纶1414,防火层面密度为200-220g/m2,厚度为0.4-0.6mm;所述基布与隔热层、隔热层与防火层之间粘结剂层的厚度均为0.1-0.3mm;所述甲醛水溶液的质量分数为35-40%,氨水的质量分数为20-30%。
本发明还提供了一种防火隔热复合面料的制备方法,包括以下步骤:利用粘结剂将基布、隔热层和防火层依次进行粘结、压合,即得。
以上所述防火隔热复合面料在消防服中的应用。
本发明具有如下有益效果:
(1)本发明通过三步法制备得到改性苯酚,该改性苯酚结构中含有苯并恶嗪和磷酸酯、羧酸酯结构,具有优异的阻燃性能和耐热性能;将改性苯酚、苯酚、甲醛混合反应,得到酚醛预聚物,酚醛预聚物再与γ-氨丙基三乙氧基硅烷、气相二氧化硅水解、缩合,得到改性酚醛树脂,通过化学改性、化学交联等方式赋予其优异的粘结性、热稳定性、阻燃性和保温隔热性能。
(2)本发明以改性酚醛树脂为粘结剂,并利用粘结剂将基布、隔热层和防火层依次进行粘结、压合,得到复合面料,粘结剂层不仅能使各层之间紧密结合,其本身还具有阻燃隔热性能,使复合面料形成多层防护结构,产品的热防护性能更加优异。
本发明提供的复合面料具有优异的阻燃性能、热稳定性能、保温隔热性能和防护性能。
具体实施方式
下面将结合本申请实施例,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,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,都属于本申请保护的范围。下述实施例中所用原料均为普通市售产品。
实施例1
一种改性酚醛树脂的制备方法,包括以下步骤:
S1、将2H-1,4-苯并恶嗪-3(4H)-酮分散于丙酮中,依次加入苄基三乙基氯化铵、氢氧化钾、6-羟基-8-氯辛酸,升温至70℃,搅拌反应5h,用硫酸调节pH为6-7,过滤,取滤液,减压蒸馏除去丙酮,用乙酸乙酯和水进行萃取,取有机相浓缩、干燥,得到中间体1,其中2H-1,4-苯并恶嗪-3(4H)-酮、苄基三乙基氯化铵、氢氧化钾、6-羟基-8-氯辛酸的摩尔比为1.2:0.05:1.0:1.1,丙酮中2H-1,4-苯并恶嗪-3(4H)-酮的加入量为0.15g/mL,乙酸乙酯与水的体积比为1:1;
S2、将步骤S1所得中间体1分散于N,N-二甲基甲酰胺中,依次加入乙酸铬、2-羟基苯基缩水甘油醚,升温至90℃,搅拌反应8h,用硫酸调节pH为6-7,过滤,取滤液,用乙酸乙酯和水进行萃取,取有机相浓缩、干燥,得到中间体2,其中中间体1、乙酸铬、2-羟基苯基缩水甘油醚的摩尔比为1:1.2:0.02,N,N-二甲基甲酰胺中中间体1的加入量为0.17g/mL,N,N-二甲基甲酰胺、乙酸乙酯与水的体积比为1:2:1;
S3、将步骤S2所得中间体2分散于N,N-二甲基甲酰胺中,加入磷酸,升温至75℃,搅拌反应8h,用乙酸乙酯和水进行萃取,取有机相浓缩、干燥,即得改性苯酚,其中中间体2、磷酸的摩尔比为1:2.2,N,N-二甲基甲酰胺中中间体2的加入量为0.25g/mL,N,N-二甲基甲酰胺、乙酸乙酯与水的体积比为1:2:1;
S4、将步骤S3所得改性苯酚、苯酚、甲醛水溶液(质量分数为37%)混合均匀,在搅拌条件下,用氨水(质量分数为25%)调节pH为8,升温至75℃,搅拌反应1h,再升温至100℃,继续搅拌反应1h,然后依次加入γ-氨丙基三乙氧基硅烷、气相二氧化硅(疏水型,型号HB-151,购自湖北汇富纳米材料股份有限公司),继续搅拌反应1h,于75℃减压抽滤1h,升温至95℃继续减压抽滤1h,即得改性酚醛树脂,其中改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷的摩尔比为0.1:0.9:1.2:0.09,气相二氧化硅的质量为改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷总质量的3%;
改性苯酚的核磁结果为:1H NMR(300MHz,DMSO-d6) δ 9.83(s,1H),6.95-7.03(m,6H),6.74-6.77(m,2H),5.23-5.27(m,1H),4.79(s,2H),4.50-4.53(m,1H),4.34-4.38(m,1H),4.20-4.26(m,5H),4.08-4.12(m,1H),3.36-3.40(m,3H),2.32(t,2H),1.71-1.75(m,2H),1.62-1.66(m,2H),1.50-1.54(m,2H),1.22-1.27(m,2H)。
实施例2
一种防火隔热复合面料,包括由内向外的基布、隔热层和防火层,基布与隔热层、隔热层与防火层之间均设置有粘结剂层,所述粘结剂采用实施例1所制备的改性酚醛树脂,所述基布为芳纶非织造布,包括以下重量份数的原料:85份芳纶1313、4份芳纶1414,基布面密度为270g/m2,厚度为1.7mm;所述隔热层包括以下重量份数的原料:55份玻璃纤维(比重2.68g/cm³,购自泰安浩松纤维有限公司)、30份矿棉纤维(密度1.5g/cm³,购自河北恒光矿产品有限公司),隔热层面密度为125g/m2,厚度为0.6mm,隔热层的制备处理为:将玻璃纤维和矿棉纤维混纺成线条,并将该线条织成布;所述防火层包括以下重量份数的原料:6份芳砜纶纤维(孔数1000,购自中芳特纤股份有限公司)、55份芳纶1313和3份芳纶1414,防火层面密度为210g/m2,厚度为0.5mm,防火层的制备处理为:将芳砜纶纤维、芳纶1313和芳纶1414混纺成线条,织成胚布,将胚布浸渍于含有阻燃剂6009(型号DTFR-6009,购自苏州嘉怡化工有限公司)的处理液(质量分数为50%)中,浸渍温度为40℃,时间为6h,浸渍完成后用清水清洗15min,经烘干、定型,即得;所述基布与隔热层、隔热层与防火层之间粘结剂层的厚度均为0.2mm。
一种防火隔热复合面料的制备方法,包括以下步骤:利用粘结剂将基布、隔热层和防火层依次进行粘结、压合,即得。
实施例3
一种改性酚醛树脂,按照实施例1所述方法制备,区别在于:步骤S4中改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷的摩尔比为0.08:0.9:1.2:0.09;一种防火隔热复合面料及其制备方法按照实施例2所述方法制备。
实施例4
一种改性酚醛树脂,按照实施例1所述方法制备,区别在于:步骤S4中改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷的摩尔比为0.12:0.9:1.2:0.09;一种防火隔热复合面料及其制备方法按照实施例2所述方法制备。
实施例5
一种防火隔热复合面料,包括由内向外的基布、隔热层和防火层,基布与隔热层、隔热层与防火层之间均设置有粘结剂层,所述粘结剂采用实施例1所制备的改性酚醛树脂,所述基布为芳纶非织造布,包括以下重量份数的原料:85份芳纶1313、4份芳纶1414,基布面密度为270g/m2,厚度为1.7mm;所述隔热层包括以下重量份数的原料:55份玻璃纤维(比重2.68g/cm³,购自泰安浩松纤维有限公司)、30份矿棉纤维(密度1.5g/cm³,购自河北恒光矿产品有限公司),将玻璃纤维和矿棉纤维混纺成线条,并将该线条织成布,隔热层面密度为125g/m2,厚度为0.6mm;所述防火层为纤维机织布,包括以下重量份数的原料:6份芳砜纶纤维(孔数1000,购自中芳特纤股份有限公司)、55份芳纶1313和3份芳纶1414(芳纶1313,粗度1.5D,强力cN/detx,芳纶1414,粗度1.5D,强力16cN/detx,均购自上海孚定新材料科技有限公司),防火层面密度为210g/m2,厚度为0.5mm;所述基布与隔热层、隔热层与防火层之间粘结剂层的厚度均为0.1mm。
一种防火隔热复合面料的制备方法按照实施例2所述方法制备。
对比例1
一种改性酚醛树脂,按照实施例1所述方法制备,区别在于:步骤S4中改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷的摩尔比为0.05:0.9:1.2:0.09;一种防火隔热复合面料及其制备方法按照实施例2所述方法制备。
对比例2
一种改性酚醛树脂,按照实施例1所述方法制备,区别在于:省略步骤S1、S2、S3,将步骤S4中的改性苯酚替换为苯酚;一种防火隔热复合面料及其制备方法按照实施例2所述方法制备。
下面对实施例2-5及对比例1-2所制备的防火隔热复合面料进行相关性能测试。将样品经25次洗涤后进行阻燃性能测试,按照GB/T5545-1997《纺织品 燃烧性能试验 垂直法》规定,测定面料样品的极限氧指数,采用LFY-601型垂直法阻燃性能测试仪,按照GB/T5455-2014《纺织品燃烧性能垂直方向损毁长度、阴燃和续燃时间的测定》规定,测定面料样品续燃时间、阴燃时间、滴落情况;保温隔热性能测试按照GB/T11048-2018《纺织品 生理舒适性 稳态条件下热阻和湿阻的测定(蒸发热板法)》规定,样品尺寸300×300mm,初始实验温度为35℃,测定试样的克罗值;热稳定性能测试按照GA10-2014《消防员灭火防护服》附录B规定,样品尺寸200×200mm,于(260±5)℃条件下放置5min,取出后于2min内测量样品尺寸,计算其尺寸变化率,尺寸变化率(%)=(加热前尺寸-加热后尺寸)/加热前尺寸×100%;热防护性能测试按照GA10-2014《消防员灭火防护服》附录A规定,使用SMIC-TPP-1型消防服热防护性能测试装置测试试样TPP值;以上测试每组实验均重复三次,测试结果如表1所示。从表中可以看出,实施例2-5所制备的复合面料的阻燃性能、保温隔热性能、热稳定性能、热防护性能均显著优于对比例1-2,在阻燃性能测试中,实施例2-5所制备的复合面料的氧指数较高,均在52.6%以上,且续燃时间、阴燃时间均为0,无熔融滴落现象;从实施例2-4与对比例1的数据可以看出,在制备改性酚醛树脂时改性苯酚的加入量能够对其性能产生影响,进而影响防火隔热复合面料的综合性能。
表1防火隔热复合面料相关性能测试结果
本发明通过三步法制备得到改性苯酚,将改性苯酚、苯酚、甲醛混合反应,得到酚醛预聚物,酚醛预聚物再与γ-氨丙基三乙氧基硅烷、气相二氧化硅水解、缩合,得到改性酚醛树脂,通过化学改性、化学交联等方式赋予其优异的粘结性、热稳定性、阻燃性和保温隔热性能。本发明以改性酚醛树脂为粘结剂,并利用粘结剂将基布、隔热层和防火层依次进行粘结、压合,得到复合面料。本发明提供的复合面料具有优异的阻燃性能、热稳定性能、保温隔热性能和防护性能。
尽管已经示出和描述了本申请的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本申请的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本申请的范围由所附权利要求及其等同物限定。

Claims (9)

1.一种防火隔热复合面料,其特征在于,包括由内向外的基布、隔热层和防火层,基布与隔热层、隔热层与防火层之间均设置有粘结剂层,所述粘结剂采用改性酚醛树脂,所述改性酚醛树脂的制备方法如下:
S1、将2H-1,4-苯并恶嗪-3(4H)-酮分散于丙酮中,依次加入苄基三乙基氯化铵、氢氧化钾、6-羟基-8-氯辛酸,升温至60-80℃,搅拌反应4-7h,调节pH为6-7,过滤,取滤液,经减压蒸馏、萃取、浓缩、干燥,得到中间体1,中间体1的结构式为:
S2、将步骤S1所得中间体1分散于N,N-二甲基甲酰胺中,依次加入乙酸铬、2-羟基苯基缩水甘油醚,升温至80-100℃,搅拌反应7-10h,调节pH为6-7,过滤,取滤液,经萃取、浓缩、干燥,得到中间体2,中间体2的结构式为:
S3、将步骤S2所得中间体2分散于N,N-二甲基甲酰胺中,加入磷酸,升温至65-85℃,搅拌反应6-10h,经萃取、浓缩、干燥,得到改性苯酚,改性苯酚的结构式为:
S4、将步骤S3所得改性苯酚与苯酚、甲醛水溶液混合均匀,在搅拌条件下,用氨水调节pH为7.5-8.5,升温至65-80℃,搅拌反应0.5-1.5h,再升温至95-105℃,继续搅拌反应0.5-1.5h,然后依次加入γ-氨丙基三乙氧基硅烷、气相二氧化硅,继续搅拌反应0.5-1.5h,经减压抽滤,即得改性酚醛树脂。
2.根据权利要求1所述的一种防火隔热复合面料,其特征在于,步骤S1中所述2H-1,4-苯并恶嗪-3(4H)-酮、苄基三乙基氯化铵、氢氧化钾、6-羟基-8-氯辛酸的摩尔比为1.2:0.03-0.06:0.8-1.1:0.9-1.2,丙酮中2H-1,4-苯并恶嗪-3(4H)-酮的加入量为0.1-0.2g/mL。
3.根据权利要求1所述的一种防火隔热复合面料,其特征在于,步骤S2中所述中间体1、乙酸铬、2-羟基苯基缩水甘油醚的摩尔比为1:1.0-1.4:0.01-0.03,N,N-二甲基甲酰胺中中间体1的加入量为0.12-0.18g/mL。
4.根据权利要求1所述的一种防火隔热复合面料,其特征在于,步骤S3中所述中间体2、磷酸的摩尔比为1:2.0-2.4,N,N-二甲基甲酰胺中中间体2的加入量为0.24-0.30g/mL。
5.根据权利要求1所述的一种防火隔热复合面料,其特征在于,步骤S4中所述改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷的摩尔比为0.08-0.12:0.8-1.1:1.1-1.3:0.08-0.12,气相二氧化硅的质量为改性苯酚、苯酚、甲醛、γ-氨丙基三乙氧基硅烷总质量的2-5%。
6.根据权利要求5所述的一种防火隔热复合面料,其特征在于,所述甲醛水溶液的质量分数为35-40%,氨水的质量分数为20-30%。
7.根据权利要求1所述的一种防火隔热复合面料,其特征在于,所述基布包括以下重量份数的原料:80-90份芳纶1313、1-4份芳纶1414,基布面密度为260-280g/m2,厚度为1.5-2.0mm;所述隔热层包括以下重量份数的原料:50-60份玻璃纤维、25-35份矿棉纤维,隔热层面密度为100-145g/m2,厚度为0.5-0.8mm;所述防火层包括以下重量份数的原料:5-10份芳砜纶纤维、40-70份芳纶1313和2-4份芳纶1414,防火层面密度为200-220g/m2,厚度为0.4-0.6mm;所述基布与隔热层、隔热层与防火层之间粘结剂层的厚度均为0.1-0.3mm。
8.根据权利要求1-7任一项所述的一种防火隔热复合面料的制备方法,其特征在于,包括以下步骤:利用粘结剂将基布、隔热层和防火层依次进行粘结、压合,即得。
9.根据权利要求1-7任一项所述的一种防火隔热复合面料在消防服中的应用。
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