CN111823663A - 电气管路用吸热型防火包覆材 - Google Patents

电气管路用吸热型防火包覆材 Download PDF

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CN111823663A
CN111823663A CN201910405600.9A CN201910405600A CN111823663A CN 111823663 A CN111823663 A CN 111823663A CN 201910405600 A CN201910405600 A CN 201910405600A CN 111823663 A CN111823663 A CN 111823663A
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heat
absorbing
fireproof
coating material
fiber
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廖德超
曹俊哲
颜世勋
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Nan Ya Plastics Corp
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    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L57/00Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/04Protection of pipes or objects of similar shape against external or internal damage or wear against fire or other external sources of extreme heat
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29Protection against damage caused by extremes of temperature or by flame
    • H01B7/292Protection against damage caused by extremes of temperature or by flame using material resistant to heat
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    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/04Protective tubing or conduits, e.g. cable ladders or cable troughs
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Abstract

本发明提供一种电气管路用吸热型防火包覆材,电气管路用吸热型防火包覆材用于覆盖或包覆一电气管路,吸热型防火包覆材为一叠层结构,叠层结构包括一厚度介于0.03毫米至0.24毫米的防火纤维布、网,以及至少一厚度介于1毫米至10毫米的吸热防火层;其中,以吸热防火层的总重为基准,吸热防火层的材料包括10重量百分比至30重量百分比的耐热树脂、3重量百分比至10重量百分比的耐热纤维和60重量百分比至80重量百分比的无机阻燃剂;吸热型防火包覆材的耐燃等级为耐燃1级,且经1100℃锻烧,其热重损失小于40%。

Description

电气管路用吸热型防火包覆材
技术领域
本发明涉及一种吸热型防火包覆材,特别是涉及一种电气管路用吸热型防火包覆材。
背景技术
一般住宅或建筑物中的电气管路(以下简称建物的电气管路),是易燃的塑料制品或内含易燃的电缆线路的金属线盒,发生火灾时,不但会助长火势外,且会产生浓烟及有害气体,从而成为阻碍人员逃离火灾现场及造成设备失效的主因。
为解决此问题,建物的电气管路及塑料管线的外部,应该覆盖或包覆上防火材料,发生火灾时,除了能够抑制火焰迅速蔓延外,并且可以减少浓烟及有害气体的产生,进而使得人员有足够的时间扑灭火源、求救、启动消防设备或逃离火场。但是,现有技术中的防火材料,有单层结构防火包覆材料或多层结构防火包覆材料,然而,其使用用途却不适合用于覆盖或包覆建物的电气管路或塑料管线。
例如,现有技术中的单层结构防火包覆材料,是使用耐燃纤维制造而成,有PAN氧化纤维、陶瓷纤维或水溶性碱土纤维等耐燃纤维制品。这些耐燃纤维为短纤维,虽具优异防火机能,但机械强度较一般长纤维差,导致这些耐燃纤维制品在运送或施工过程中有易破碎及易损伤等问题。尤其是,为了防止制品碎裂及损伤,这些耐燃纤维制品的外部,需要再使用铝箔贴合或铝板外封,以至于这些耐燃纤维制品的柔软性及可弯折性不佳,此结果造成其使用用途不适合用于覆盖或包覆建物的电气管路或塑料管线。
例如,现有技术中的多层结构防火包覆材料,有中国实用新型专利(CN202982995U)公开的具三层叠层结构的光缆、电缆用防火毯,其叠层结构中,使用无机纤维针刺毯为中间隔热层,而中间隔热层的上下两侧,则使用无机纤维织物制成的装饰层。但是,这种防火毯的防火用途,仅可用于包覆保护光缆、电缆,却无法延长光缆、电缆在火灾时的有效性,造成设备失效。
例如,现有技术中的多层结构防火包覆材料,有日本发明专利(JP20135010742A)公开的具多层非膨胀型防火材,经由无机纤维层及吸热层,以湿式成型方式形成多层结构。但是这种防火材因各层配方及各层厚度皆有差异,以致厚度高达20至50mm,且使用时需将无机纤维层及吸热层区分使用,适用于石油生产及加工管道,不适合用于覆盖或包覆建物的电气管路及塑料管线。
例如,现有技术中的多层结构防火包覆材料,有美国3M公司发明专利(US6051193)公开的多层膨胀型片,可作为污染控制组件及消防装置,经由柔软的可膨胀层及非膨胀层,使用造纸机以湿式沉积形成多层结构,虽具有柔软性,但有可弯折性不佳及重量过重的问题,其使用用途仍然不适合用于覆盖或包覆建物的电气管路及塑料管线。
发明内容
为解决现有技术中的防火材料不适合用于覆盖或包覆建物的电气管路及塑料管线的问题,本发明的主要目的在于公开一种电气管路用吸热型防火包覆材,具覆盖或包覆电气管路、塑料管线及防火用途,其断面结构以涂布方式构成呈一体化结构的双层或三层以上的叠层复合结构,其中,其断面结构的其中一层叠层结构,以厚度介于0.03(毫米)mm至0.24mm的防火纤维布、网作为涂布及披覆基材,且防火纤维布、网的上侧或下侧、或其上侧及下侧两侧,以厚度介于1mm至10mm的吸热防火层构成;也就是说,本发明的电气管路用吸热型防火包覆材,包含一防火纤维布、网和至少一吸热防火层。其中,防火纤维布、网选自玻璃纤维、碳纤维、聚丙烯腈(polyacrylonitrile,PAN)氧化纤维、陶瓷纤维、水溶性碱土纤维或芳香族聚酰胺纤维中的一种,且吸热防火层的材料包括10重量百分比(wt%)至30wt%的耐热树脂、3wt%至10wt%的耐热纤维和60wt%至80wt%的无机阻燃剂。吸热型防火包覆材的耐燃等级为耐燃1级,且经1100℃锻烧,其热重损失小于40%。
优选地,电气管路用吸热型防火包覆材,其中,防火纤维布、网的经纬密度介于55×53至10×10。
优选地,电气管路用吸热型防火包覆材,其中,防火纤维布、网为玻璃纤维、碳纤维、聚丙烯腈氧化纤维、陶瓷纤维、水溶性碱土纤维或芳香族聚酰胺纤维。
优选地,耐热树脂为硅树脂、氟碳树脂或其组合物。
优选地,耐热纤维为玻璃纤维、碳纤维、陶瓷纤维、水溶性碱土纤维或其组合物。
优选地,无机阻燃剂为氢氧化物、无机磷是化合物、纳米层状硅酸盐、硼酸盐或其组合物。
优选地,吸热防火层是以涂布方式形成于防火纤维布、网上。
本发明公开的电气管路用吸热型防火包覆材,具有柔软、可曲折、重量轻及高强度等特性,适合用于覆盖或包覆建物的电气管路,不但可以提升建物的电气管路的耐燃程度,并且可以降低火灾时火势的蔓延及延长电气管路内线路、电缆线有效性的用途。
为使能更进一步了解本发明的特征及技术内容,请参阅以下有关本发明的详细说明与附图,然而所提供的附图仅用于提供参考与说明,并非用来对本发明加以限制。
附图说明
图1为本发明的电气管路用吸热型防火包覆材呈一体化的双层叠层结构的示意图。
图2为本发明的电气管路用吸热型防火包覆材呈一体化的三层叠层结构的示意图。
图3为本发明的电气管路用吸热型防火包覆材呈一体化的五层叠层结构的示意图。
图4为本发明的电气管路用吸热型防火包覆材呈一体化的三层叠层结构的示意图。
具体实施方式
以下是通过特定的具体实施例来说明本发明所公开有关“电气管路用吸热型防火包覆材”的实施方式,本领域技术人员可由本说明书所公开的内容了解本发明的优点与效果。本发明可通过其他不同的具体实施例加以施行或应用,本说明书中的各项细节也可基于不同观点与应用,在不悖离本发明的构思下进行各种修改与变更。另外,本发明的附图仅为简单示意说明,并非依实际尺寸的描绘,事先声明。以下的实施方式将进一步详细说明本发明的相关技术内容,但所公开的内容并非用以限制本发明的保护范围。
应当可以理解的是,虽然本文中所使用的术语“或”,应视实际情况可能包括相关联的列出项目中的任一个或者多个的组合。
如图1至图4所示,本发明的吸热型防火包覆材10,其断面结构呈多层复合结构,具备双层或三层以上的叠层制品。尤其是,其多层复合结构中的相邻不同叠层结构之间,是以涂布手段构成呈一体化结构的多层复合结构。
本发明的吸热型防火包覆材10,使用涂布手段构成呈一体化结构时,可以利用选择涂层厚度、贴合压力及调整吸热防火层配方来调整叠层机械强度和软硬度。
如图1所示,本发明的吸热型防火包覆材10,其断面结构呈双层叠层结构时,是由防火纤维布、网11及一吸热防火层12叠合构成。更具体而言,是使用涂布手段,将所述吸热防火层12叠合在所述防火纤维布、网11的上侧或下侧,从而构成呈一体化结构且兼具优异机械强度和软硬度的双层叠层结构。
另外,由于吸热防火层12是以涂布的方式形成,吸热防火层12除了设置于防火纤维布、网11的至少其中一侧上之外,吸热防火层12亦会渗入防火纤维布、网11的间隙中,而可使吸热型防火包覆材10兼具优异机械强度和软硬度。并且,相较于以往湿式成型的方法,可解决厚度调整的问题,具有依防火需求调整厚度的技术效果。
如图2所示,本发明的吸热型防火包覆材10,其断面结构呈三层叠层结构时,是由一防火纤维布、网11及二吸热防火层12叠合构成。更具体而言,是使用涂布手段,将所述吸热防火层12分别叠合在所述防火纤维布、网11的上侧及下侧,从而构成呈一体化结构且兼具优异机械强度和软硬度的三层叠层结构。
如图3所示,本发明的吸热型防火包覆材10,其断面结构呈五层叠层结构时,是由二防火纤维布、网11及三吸热防火层12叠合构成,且是使用涂布手段将每一防火纤维布、网11叠置在二片吸热防火层12的中间,从而构成呈一体化结构且兼具优异机械强度和软硬度的五层叠层结构。
如图4所示,本发明的吸热型防火包覆材10,其断面结构呈三层叠层结构时,是由二防火纤维布、网11及一吸热防火层12叠合构成,且是使用涂布手段将防火纤维布、网11叠置在及一片吸热防火层12的上下侧,从而构成呈一体化结构且兼具优异机械强度和软硬度的三层叠层结构。
本发明的吸热型防火包覆材10,具覆盖或包覆电气管路、塑料管线及防火用途,其中,防火纤维布、网11的厚度,介于0.03mm至0.24mm,优选为介于0.05mm至0.15mm,且选自玻璃纤维、碳纤维、PAN氧化纤维、陶瓷纤维、水溶性碱土纤维或芳香族聚酰胺纤维中的一种,具备极佳的耐燃及绝热性能。
而所述吸热防火层12的厚度,介于1mm至10mm,优选为介于1.5mm至5mm,且由耐热树脂如硅树脂、氟碳树脂等单一或多种成分、耐热纤维如玻璃纤维、碳纤维、陶瓷纤维、水溶性碱土纤维等及无机阻燃剂如氢氧化物、无机磷是化合物、纳米层状硅酸盐、硼酸盐等单一或多种成分混合成配方构成,具备极佳的吸热性及耐燃性。当使用涂布手段将所述吸热防火层12与所述防火纤维布、网11构成呈一体化结构时,所述防火纤维布、网11的厚度太薄,支撑度不足,而无法增加涂布厚度,而厚度太厚,则造成吸热型防火包覆材10曲折性不佳,造成碎裂。
所述防火纤维布、网11的经纬密度(即,布面每单位长度内所含纱线根数,以“wpi×fpi”表示),介于55×53至10×10,优选为介于20×18至17×17,其中,“wpi(warps perinch)”是指布面在横向的每1英寸的经纱根数;“fpi(fillings per inch)”是指布面在纵向的每1英寸的纬纱根数。
所述防火纤维布、网11的经纬密度愈高,机械强度也愈高,但当使用涂布手段将所述吸热防火层12与所述防火纤维布、网11构成呈一体化结构时,叠层间附着性不佳,结果成品机械强度反而下降。若防火纤维布、网11的经纬密度太低,则机械强度不足,造成成品易碎裂,因此,本发明通过控制防火纤维布、网11的经纬密度,可达到调整机械强度的技术效果。
本发明的吸热型防火包覆材10,除具备隔热及防火特性外,还兼具柔软、可曲折、重量轻及高强度的特性,使用用途适合用于覆盖或包覆建物的电气管路及塑料管线,着火时,能够抑制或延迟火焰烧到建物的电气管路及塑料管线,有助于减少浓烟与有害气体的产生,及延长电气管路内线路、电缆线有效性。
以下举实施例及比较例制得的吸热型防火包覆材样品,按照下列测试方法评估吸热型防火包覆材的物性。
I.拉力强度(kg/cm3)测试:
从样品的纵向及横向各裁切下一片相同大小(长150mm及宽30mm)的试片。调整拉力试验机的上下夹具距离为100±2mm,将试片以夹具夹紧,以200mm±20mm/min速度向下拉至断裂后,记录最高数据。
II.90°曲折角度测试:
从样品的纵向及横向各裁切下一片相同大小(长150mm及宽150mm)的试片。以手工进行90°曲折测试,目视样品是否有破裂、剥落等外观异常发生。
III.耐燃性测试:
按照ASTM E 1354规范使用锥形量热仪测试材料承受不同加热时间后的燃烧热释放率。在50kW(千瓦)/m2的加热条件下,对测试材料分别加热20分钟、10分钟及5分钟,视测试材料满足下列规范标准1~3的加热条件决定其耐热等级:
1.材料总热释放量为8MJ(兆焦耳)/m2以下;
2.最大热释放率超过200kW/m2的时间,没有持续10秒以上;
3.测试材料背面没有出现龟裂及孔穴。
测试材料的耐热等级,分为下列三个等级:
A.耐热1级,是指测试材料经过加热20分钟后能够满足上述规范标准1~3;
B.耐热2级,是指测试材料经过加热10分钟后能够满足上述规范标准1~3;
C.耐热3级,是指测试材料经过加热5分钟后能够满足上述规范标准1~3;
IV.1100℃耐热经时性:
参考UL1709规范,使用高温炉测试材料承受1100用不同加热时间后的热重损失。对测试材料分别锻烧30分钟、60分钟、120分钟及240分钟,评估材料本身耐热经时性。
[实施例1]
如图1所示,使用涂布手段制得呈双层叠层结构的吸热型防火包覆材,其叠层结构包含厚度0.02mm的玻璃纤维布及一层厚度1mm的吸热防火层,其中,玻璃纤维布的经纬密度为17×17。
进行各项物性评估,结果如表1所示。
[实施例2]
如图2所示,使用涂布手段制得呈三层叠层结构的吸热型防火包覆材,其叠层结构包含一层厚度0.1mm的芳香族聚酰胺纤维网及双层厚度2mm的吸热防火层,其中,芳香族聚酰胺纤维网的经纬密度为12.5×12.5。
进行各项物性评估,结果如表1所示。
[实施例3]
如图3所示,使用涂布手段制得五层叠层结构的吸热型防火包覆材,其叠层结构中包含二片厚度0.05mm的玻璃纤维布,且每片玻璃纤维布的表面涂布厚度2mm的吸热防火层,其中,玻璃纤维布的经纬密度为20×10。
进行各项物性评估,结果如表1所示。
[实施例4]
如图4所示,使用涂布手段制得呈三层叠层结构的吸热型防火包覆材,其叠层结构中包含二片厚度0.05mm的玻璃纤维布及单层厚度2mm的吸热防火层,其中,玻璃纤维布的经纬密度为17×15。
进行各项物性评估,结果如表1所示。
[比较例1]
取厚度2mm的PAN氧化纤维织造毯为单层结构防火包覆材料,不再复合吸热防火层。
进行各项物性评估,结果如表1所示。
[比较例2]
取市售厚度10.02mm的双层结构吸热防火包覆材料。
进行各项物性评估,结果如表1所示。
[比较例3]
如图2所示,使用涂布手段制得呈三层叠层结构的吸热型防火包覆材,其叠层结构包含双层厚度0.02mm的玻璃纤维布及一层厚度3mm的吸热防火层,其中,玻璃纤维布的经纬密度为56×56。
进行各项物性评估,结果如表1所示。
[比较例4]
如图1所示,使用涂布手段制得呈双层叠层结构的吸热型防火包覆材,其叠层结构包含厚度0.3mm的碳纤布及厚度1mm的吸热防火层,其中,碳纤布的经纬密度为6.25×6.25。
进行各项物性评估,结果如表1所示。
表1:成分组成及其物性
Figure BDA0002061108810000081
Figure BDA0002061108810000091
[结果]
1.实施例1的吸热型防火包覆材,使用涂布手段制得呈双层叠层结构吸热型防火包覆材,其叠层结构包含厚度0.02mm的玻璃纤维布及一层厚度1mm的吸热防火层,其中,玻璃纤维布的经纬密度为17×17,与比较例1只使用PAN氧化纤维织造毯的单层叠层结构防火包覆材相较,在耐燃等级及1100℃耐热经时性等防火性能方面,均获得有效提升,尤其是,实施例1的吸热型防火包覆材,具有柔软、可曲折、重量轻及高强度等特性,适合用于覆盖或包覆电气管路及塑料管线,且耐燃等级为耐燃1级,且经1100℃锻烧,其热重损失小于40%,除了有助减少浓烟与有害气体的产生,也延长电气管路内线路、电缆线有效性。
2.实施例1的吸热型防火包覆材,使用涂布手段制得呈双层叠层结构吸热型防火包覆材,其叠层结构包含厚度0.02mm的玻璃纤维布及一层厚度1mm的吸热防火层,其中,玻璃纤维布的经纬密度为17×17,相对于比较例4的吸热型防火包覆材,除了同样一吸热防火层外,另使用厚度0.3mm,经纬密度为6.25×6.25的碳纤维布制得,虽在耐燃等级及1100℃耐热经时性等防火性能相当,但在拉力强度及曲折性等机械强度,均获得有效提升,也说明碳纤维布的经纬密度不得低于10×10,而厚度不得高于2.4mm。
3.实施例2的吸热型防火包覆材,使用涂布手段制得呈三层叠层结构吸热型防火包覆材,除二吸热防火层外,还包括使用厚度0.05mm,经纬密度为12.5×12.5为厚度使的芳香族聚酰胺纤维网,相对于比较例3的吸热型防火包覆材,除了同样二吸热防火层外,也使用厚度0.05mm,经纬密度为56×56的碳纤维布,制得呈三层叠层结构,在耐燃等级及1100℃耐热经时性等防火性能虽相当,但实施例2的吸热型防火包覆材90°曲折不破裂、不剥落,说明玻璃纤维布的经纬密度不得高于55×53。
4.比较例2的市售吸热型防火包覆材,是以湿式成型方式制得呈二层叠层结构吸热防火包覆材,厚度高达10mm,而相对于实施例3使用涂布手段制得呈五层叠层结构,厚度9.2mm吸热防火包覆材,相较下,其耐燃等级及1100℃耐热经时性等防火性能相当,但在曲折性方面,实施例3的吸热型防火包覆材90°曲折不破裂、不剥落,更适合用于覆盖或包覆电气管路及塑料管线,除了有助减少浓烟与有害气体的产生,也延长电气管路内线路、电缆线有效性。
5.实施例4的吸热型防火包覆材,使用涂布手段制得三层叠层结构防火包覆材,除单层吸热防火层外,另使用二厚度0.05mm,经纬密度为17×15的玻璃纤维布,具备优异拉力强度、曲折性,耐燃等级为耐燃1级,且经1100℃锻烧,其热重损失小于40%,适合用于覆盖或包覆电气管路及塑料管线,也有助减少浓烟与有害气体的产生,及延长电气管路内线路、电缆线有效性。
以上所公开的内容仅为本发明的优选可行实施例,并非因此局限本发明的权利要求书的保护范围,所以凡是运用本发明说明书及附图内容所做的等效技术变化,均包含于本发明的权利要求书的保护范围内。

Claims (7)

1.一种电气管路用吸热型防火包覆材,其特征在于,所述电气管路用吸热型防火包覆材用于覆盖或包覆一电气管路,所述吸热型防火包覆材为一叠层结构,所述叠层结构包括一厚度介于0.03毫米至0.24毫米的防火纤维布、网,以及至少一厚度介于1毫米至10毫米的吸热防火层;其中,以所述吸热防火层的总重为基准,所述吸热防火层的材料包括10重量百分比至30重量百分比的耐热树脂、3重量百分比至10重量百分比的耐热纤维和60重量百分比至80重量百分比的无机阻燃剂;所述吸热型防火包覆材的耐燃等级为耐燃1级,且经1100℃锻烧,其热重损失小于40%。
2.根据权利要求1所述的电气管路用吸热型防火包覆材,其特征在于,所述防火纤维布、网的经纬密度介于55×53至10×10。
3.根据权利要求1所述的电气管路用吸热型防火包覆材,其特征在于,所述防火纤维布、网为玻璃纤维、碳纤维、聚丙烯腈氧化纤维、陶瓷纤维、水溶性碱土纤维或芳香族聚酰胺纤维。
4.根据权利要求1所述的电气管路用吸热型防火包覆材,其特征在于,所述耐热树脂为硅树脂、氟碳树脂或其组合物。
5.根据权利要求1所述的电气管路用吸热型防火包覆材,其特征在于,所述耐热纤维为玻璃纤维、碳纤维、陶瓷纤维、水溶性碱土纤维或其组合物。
6.根据权利要求1所述的电气管路用吸热型防火包覆材,其特征在于,所述无机阻燃剂为氢氧化物、无机磷是化合物、纳米层状硅酸盐、硼酸盐或其组合物。
7.根据权利要求1所述的电气管路用吸热型防火包覆材,其特征在于,所述吸热防火层是以涂布方式形成于所述防火纤维布、网上。
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