CN107476061B - 一种a级防火天花软膜及其制备方法 - Google Patents
一种a级防火天花软膜及其制备方法 Download PDFInfo
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Abstract
本发明提供了一种A级防火天花软膜,其包括基体和涂覆在所述基体表面的涂层,所述基体为玻璃纤维织物,所述涂层由聚四氟乙烯、二氧化钛、空心玻璃微珠和聚乙烯醇组成。本发明具有防火性能良好(达到A级防火)和良好的透光率(达到60~70%以上);发烟量小,能有效的阻挡火的蔓延;空心玻璃微珠提高了天花软膜的阻燃性,并且由于其内部空腔的存在,使得该天花软膜隔音性能和保温性能良好。
Description
技术领域
本发明涉及建筑装饰材料领域,具体涉及一种A级防火天花软膜的制备方法和应用。
背景技术
随着人们生活水平的不断提高,人们对自己居住的房屋不仅仅要求满足遮风挡雨和保暖等基本需求,还对室内装饰的美观和环保有了新的要求,尤其对于造型单一的天花板来说,传统单调的吊顶造型早已不能满足人们对审美的需求。除了传统的石膏造型吊顶、三合板吊顶和金属网格吊顶等硬质吊顶外,以天花软膜为代表的软质吊顶材料深受人们喜爱。天花软膜由于其质软的特点,突破了传统硬质吊顶造型单一,结构简单和无法曲面造型的局限,能够按照需求加工成不同的造型;并且由于天花软膜的材料多为无机材料和高分子材料构成的新型复合材料,不仅在色彩上更为丰富,施工也相对较为简单和快捷,同时一定程度上还能起到防水防霉的作用。
但是,由于天花软膜大多需要使用到高分子材料,而有些高分子材料受到高温会发生燃烧,并且火焰会蔓延至房间的其他区域,并且部分高分子材料在燃烧的过程中会释放出大量有害气体,并且伴随着燃烧的持续进行可能会发生熔滴现象,可能会对房间内的人员和财物造成伤害。本发明提出了一种A级防火天花软膜的制备方法和应用,该天花软膜相比于传统的天花软膜,发烟量小,防火性能良好,能够达到GB 8624-2012《建筑材料及制品燃烧性能分级》中规定的A1级标准,并且染色性,隔音性能和保温性能良好,在日常使用过程中表面易清洁,抗老化性能良好,使用寿命较长。
发明内容
本发明的目的在于解决传统天花软膜防火性能较差,无法满足消防安全和环境保护要求等问题,提供一种A级防火天花软膜的制备方法和应用。
为了达到上述目的,本发明通过如下技术方案实现的:一种A级防火天花软膜,其包括基体和涂覆在所述基体表面的涂层,所述基体为玻璃纤维织物,所述涂层由聚四氟乙烯、二氧化钛、空心玻璃微珠和聚乙烯醇制备而成。
根据本发明所述的A级防火天花软膜,优选地,所述涂层的原料为聚四氟乙烯分散液5-40重量份、二氧化钛2-10重量份、空心玻璃微珠1-10重量份、聚乙烯醇1-10重量份。
根据本发明所述的A级防火天花软膜,优选地,所述玻璃纤维织物中玻璃纤维为无碱玻璃纤维(E类),中碱玻璃纤维(C类),高碱玻璃纤维(A类)中的一种或多种的混合体,纤维直径为5-20μm,织物密度为30-300g/m2。
根据本发明所述的A级防火天花软膜,优选地,所述聚四氟乙烯分散液中聚四氟乙烯为悬浮法树脂和分散法树脂中的一种或两种的混合体,树脂平均粒径为0.05-50μm,密度为150-300g/L。
根据本发明所述的A级防火天花软膜,优选地,所述二氧化钛为纳米级二氧化钛。纳米级二氧化钛的比表面积远大于普通的二氧化钛,具有抗紫外线、抗菌、自洁净和抗老化等功效。
根据本发明所述的A级防火天花软膜,优选地,所述空心玻璃微珠为A玻璃-碱石灰空心玻璃微珠和E玻璃-硅酸硼空心玻璃微珠中的一种或两种的混合体,玻璃微珠平均粒子尺寸为5-300μm,壁厚为0.8-3μm,堆积密度为0.09-0.4g/cm3,球形率为99-95%,软化温度为600-700℃,吸油率为15-19g/100g。
根据本发明所述的A级防火天花软膜,优选地,所述聚乙烯醇为高黏度聚乙烯醇、中黏度聚乙烯醇和低黏度聚乙烯醇的一种或多种的混合体,平均分子量为2.5-25万,醇解度为78-98%。
根据本发明所述的A级防火天花软膜,优选地,其包括以经等离子体表面改性的玻璃纤维织物为基体,并在其表面均匀涂覆聚四氟乙烯分散液,并在涂层中加入适量二氧化钛,空心玻璃微珠和聚乙烯醇,其原料配比为玻璃纤维织物90-130重量份,聚四氟乙烯分散液5-40重量份,二氧化钛2-10重量份,空心玻璃微珠1-10重量份和聚乙烯醇1-10重量份。
本发明所要解决的技术问题是提供一种A级防火天花软膜的制备方法,包括以下步骤:
(1)按配比称取各组分玻璃纤维织物,聚四氟乙烯分散液、二氧化钛,空心玻璃微珠和聚乙烯醇;
(2)将偶联剂溶于无水乙醇中形成溶液,将玻璃纤维织物浸润于偶联剂溶液中,然后进行干燥;
(3)将前述玻璃纤维织物放入低温等离子体处理装置中,对所述玻璃纤维织物进行表面改性处理;
(4)配制偶联剂水溶液,然后倒入空心玻璃微珠,搅拌均匀使偶联剂包覆空心玻璃微珠,再将改性后的空心玻璃微珠置于烘箱中干燥;
(5)将前述的聚四氟乙烯分散液、二氧化钛、聚乙烯醇和经过偶联剂处理的空心玻璃微珠,进行混合搅拌,使其分散均匀,得到的混合物;
(6)将步骤(2)的经过表面改性的玻璃纤维织物浸入前述配制好的混合物中,并将其放置于的烘箱中干燥。
优选地,所述偶联剂为γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH-570)。
优选地,所述步骤(2)中,将玻璃纤维织物放入含有丙酮的超声波清洗机中清洗,以去除玻璃纤维表面的污物。
优选地,所述步骤(3)中,将前述清洁的玻璃纤维织物放入低温等离子体处理装置中,介质选用厚度为0.2~2mm的石英板,与地电极之间的放电间隙设置为1~5mm,设定低温等离子体处理装置的电源频率为5~15kHz,外加电压峰值为10~30kV,主放电电流脉冲为尖电流脉冲形式,放电功率为50~90W。
优选地,为了保证玻璃纤维织物的各个表面被等离子体均匀地处理,设定地电极转速为5~15r/min,在工作温度为20~25℃的空气中对玻璃纤维织物进行表面改性,处理时间为5~15min。
优选地,所述步骤(6)中,将经过表面改性的玻璃纤维织物浸入配制好的混合物中,再干燥;重复此步骤3~6次。
一种A级防火天花软膜的制备方法,包括以下步骤:
(1)按以下配比称取各组分:玻璃纤维织物90~130g,聚四氟乙烯分散液5~40g、二氧化钛2~10g,空心玻璃微珠1~10g和聚乙烯醇1~10g;
(2)将0.1~1.0g偶联剂γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH-570)溶于80~120g无水乙醇中形成溶液,将90~130g玻璃纤维织物浸润于无水乙醇溶液中,浸润15~60min后将玻璃纤维织物取出,将其置于100~140℃烘箱中干燥8~24h,将经过偶联剂KH-570处理过的玻璃纤维织物放入含有丙酮的超声波清洗机中清洗20~40min,以去除玻璃纤维表面的污物,并放入烘箱中干燥6~24h,得到清洁的玻璃纤维织物;
(3)将清洁的玻璃纤维织物放入低温等离子体处理装置中,介质选用厚度为0.2~2mm的石英板,与地电极之间的放电间隙设置为1~5mm,设定低温等离子体处理装置的电源频率为5~15kHz,外加电压峰值为10~30kV,主放电电流脉冲为尖电流脉冲形式,放电功率为50~90W;为了保证玻璃纤维织物的各个表面被等离子体均匀地处理,设定地电极转速为5~15r/min,在工作温度为20~25℃的空气中对玻璃纤维织物进行表面改性,处理时间为5~15min;
(4)将0.015~0.15g偶联剂KH-570溶于1~5g去离子水中形成溶液,将水溶液倒入1~10g空心玻璃微珠中,搅拌20~40min使偶联剂包覆空心玻璃微珠,再将改性后的空心玻璃微珠置于90~110℃烘箱中干燥4~12h,取出后放入密闭容器中待用;
(5)将第一步中称取的聚四氟乙烯分散液、二氧化钛、聚乙烯醇和经过偶联剂处理的空心玻璃微珠加入容器中,搅拌6~24h,使其分散均匀,得到配置完成的混合物;
(6)将上述经过表面改性的玻璃纤维织物浸入上述配制好的混合物中,并将其放置于50~90℃的烘箱中干燥6~12h,重复该步骤3~6次。
本发明的A级防火天花软膜具有如下优点:
(1)本发明具有防火性能良好(达到A级防火)和良好的透光率(达到60~70%以上);
(2)本发明发烟量小,能有效的阻挡火的蔓延。在地震、火灾等自然灾害来临时,该软膜不会助燃、不会出现脱落,在阻燃过程中不会产生对人体有害的气体,而且该软膜被加热到1200℃的温度极限后,才会自动熔化,且不会释放出有害气体或溶液滴下伤及人体,可以更好的保障财产安全和人身安全;
(3)相比于传统配方,本发明引入纳米级二氧化钛、聚乙烯醇和空心玻璃微珠等添加剂。纳米级二氧化钛改善了天花软膜的清洁性和抗老化性,延长使用寿命;聚乙烯醇的加入改善了天花软膜的染色性,拓宽了在染色过程中颜料适用的种类;空心玻璃微珠提高了天花软膜的阻燃性,并且由于其内部空腔的存在,使得该天花软膜隔音性能和保温性能良好;
(4)该A级防火天花软膜原料易得,成本较低,加工方便,适合在各类室内外装饰工程中大面积使用。
具体实施方式
以下结合具体实施例对上述方案做进一步说明。应理解,这些实施例是用于说明本发明而不限于限制本发明的范围。实施例中采用的实施条件可以根据具体厂家的条件做进一步调整,未注明的实施条件通常为常规实验中的条件。
介绍和概述
本发明通过举例而非给出限制的方式来进行说明。应注意的是,在本公开文件中所述的“一”或“一种”实施方式未必是指同一种具体实施方式,而是指至少有一种。
下文将描述本发明的各个方面。然而,对于本领域中的技术人员显而易见的是,可根据本发明的仅一些或所有方面来实施本发明。为说明起见,本文给出具体的编号、材料和配置,以使人们能够透彻地理解本发明。然而,对于本领域中的技术人员将显而易见的是,本发明无需具体的细节即可实施。在其他例子中,为不使本发明费解而省略或简化了众所周知的特征。
将各种操作作为多个分立的步骤而依次进行描述,且以最有助于理解本发明的方式来说明;然而,不应将按次序的描述理解为暗示这些操作必然依赖于顺序。
将根据典型种类的反应物来说明各种实施方式。对于本领域中的技术人员将显而易见的是,本发明可使用任意数量的不同种类的反应物来实施,而不只是那些为说明目的而在这里给出的反应物。此外,也将显而易见的是,本发明并不局限于任何特定的混合示例。
材料和方法
具体实施例
实施例1
(1)按以下配比称取各组分:玻璃纤维织物100.0g,聚四氟乙烯分散液40.0g、二氧化钛4.5g,空心玻璃微珠3.0g和聚乙烯醇5.0g;
(2)将0.2g偶联剂γ-(甲基丙烯酰氧)丙基三甲氧基硅烷(KH-570)溶于99.8g无水乙醇中形成溶液,将100g玻璃纤维织物浸润于无水乙醇溶液中,浸润30min后将玻璃纤维织物取出,将其置于120℃烘箱中干燥12h;将经过偶联剂KH-570处理过的玻璃纤维织物放入含有丙酮的超声波清洗机中清洗30min,以去除玻璃纤维表面的污物,并放入烘箱中干燥10h,得到清洁的玻璃纤维织物;
(3)将清洁的玻璃纤维织物放入低温等离子体处理装置中,介质选用厚度为1mm的石英板,与地电极之间的放电间隙设置为3mm,设定低温等离子体处理装置的电源频率为11kHz,外加电压峰值为20kV,主放电电流脉冲为尖电流脉冲形式,放电功率为70W;为了保证玻璃纤维织物的各个表面被等离子体均匀地处理,设定地电极转速为10r/min,在工作温度为25℃的空气中对玻璃纤维织物进行表面改性,处理时间为10min;
(4)将0.06g偶联剂KH-570溶于2.94g去离子水中形成溶液,将水溶液倒入3g空心玻璃微珠中,搅拌30min使偶联剂包覆空心玻璃微珠,再将改性后的空心玻璃微珠置于100℃烘箱中干燥6h,取出后放入密闭容器中待用;
(5)将第一步中称取的聚四氟乙烯分散液、二氧化钛、聚乙烯醇和经过偶联剂处理的空心玻璃微珠加入容器中,搅拌12h,使其分散均匀,得到配置完成的混合物;
(6)将上述经过表面改性的玻璃纤维织物浸入上述配制好的混合物中,并将其放置于50℃的烘箱中干燥8h,重复该步骤5次。
为了进一步表征本发明中所述的一种A级防火天花软膜的防火性能,按照以下标准和方法分别进行了测试:
(1)EN 13823:2010建筑制品对火反应(不含铺地材料的建筑制品单项燃烧试验方法),测试结果取3次试验结果的平均值;
(2)EN ISO 11925-2:2010对火反应试验,建筑制品在直接火焰冲击下的可燃性(第2部分:单个火源试验),测试结果取6次试验结果的平均值。测试样品密度为621g/m2,试样安装与固定方法参照GB/T 20284:用密度约为1800kg/m3,厚度为8mm的防火水泥板作为基材,样品用螺钉固定在基材上,无接缝。
防火性能测试结果如表3和表4所示:
表1一种A级防火天花软膜防火性能测试结果
根据EN 13501-1:2007+A1:2009对样品进行分级,燃烧性能等级:A2-s1,d0。
表2一种A级防火天花软膜燃烧性能等级
如上文所述,发明中所述的一种A级防火天花软膜具有良好的防火性能的同时,对其各项力学性能也按照以下标准和方法进行了测试:
(1)撕裂强度测试中,测试方法为ASTM D1004-13,试样厚度为0.302mm,测试速度为51mm/min,测试环境温度为23±2℃,测试环境湿度为50±5%RH;
(2)拉伸强度和断裂伸长率测试中,测试方法为ISO 527-1:2012&ISO 527-3:1995/Cor.2:2001,试样宽度为25mm,试样厚度为0.302mm,测试速度为500mm/min,夹头距离为50mm,测试环境温度为23±2℃,测试环境湿度为50±5%RH。
力学性能测试结果如表3所示:
表3一种A级防火天花软膜力学性能测试结果
实施例2
与实施例1相比,将第一步中玻璃纤维织物用量变为120.0g,其他条件保持不变。
实施例3
与实施例1相比,将第一步中聚四氟乙烯分散液用量变为35.0g,其他条件保持不变。
实施例4
与实施例1相比,将第一步中二氧化钛用量变为2.5g,其他条件保持不变。
实施例5
与实施例1相比,将第一步中空心玻璃微珠用量变为4.5g,其他条件保持不变。
实施例6
与实施例1相比,将第一步中聚乙烯醇用量变为7.0g,其他条件保持不变。
实施例7
与实施例1相比,将第二步中KH-570用量变为0.5g,无水乙醇用量变为99.5g,其他条件保持不变。
实施例8
与实施例1相比,将第三步中玻璃纤维表面改性处理时间变为15min,其他条件保持不变。
实施例9
与实施例1相比,将第四步中KH-570用量变为0.10g,去离子水用量变为2.90g,其他条件保持不变。
实施例10
与实施例1相比,将第五步中搅拌时间变为10h,其他条件保持不变
实施例11
与实施例1相比,将第六步中干燥温度变为60℃,其他条件保持不变。
实施例12
与实施例1相比,将第六步中干燥时间变为10h,其他条件保持不变。
实施例13
与实施例1相比,将第六步中重复次数变为6次,其他条件保持不变。
实施例2-13中获得的A级防火天花软膜与实施例1的产品具有类似的性能。
以上所述具体实施例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或替换,这些改进或替换也应当视为本发明的保护范围。
Claims (8)
1.一种A级防火天花软膜,其包括基体和涂覆在所述基体表面的涂层,所述基体为玻璃纤维织物,所述涂层由聚四氟乙烯分散液、二氧化钛、空心玻璃微珠和聚乙烯醇制备而成;
所述涂层的原料为聚四氟乙烯分散液5-40重量份、二氧化钛2-10重量份、空心玻璃微珠1-10重量份、聚乙烯醇1-10重量份;
所述空心玻璃微珠为A玻璃-碱石灰空心玻璃微珠或E玻璃-硅酸硼空心玻璃微珠中的一种或两种的混合体,玻璃微珠平均粒子尺寸为5-300μm。
2.根据利要求1所述A级防火天花软膜,其特征在于,所述玻璃纤维织物中玻璃纤维为无碱玻璃纤维、中碱玻璃纤维、高碱玻璃纤维中的一种或多种的混合体,纤维直径为5-20μm,织物密度为30-300g/m2。
3.根据利要求1所述A级防火天花软膜,其特征在于,所述聚四氟乙烯分散液中聚四氟乙烯为悬浮法树脂和分散法树脂中的一种或两种的混合体,树脂平均粒径为0.05-50μm,密度为150-300g/L。
4.根据利要求1所述A级防火天花软膜,其特征在于,其原料配比为玻璃纤维织物90-130重量份,聚四氟乙烯分散液5-40重量份,二氧化钛2-10重量份,空心玻璃微珠1-10重量份和聚乙烯醇1-10重量份。
5.制备如权利要求1-4任一项所述的A级防火天花软膜的方法,包括以下步骤:
(1)按配比称取各组分玻璃纤维织物,聚四氟乙烯分散液、二氧化钛,空心玻璃微珠和聚乙烯醇;
(2)将偶联剂溶于无水乙醇中形成溶液,将玻璃纤维织物浸润于偶联剂溶液中,然后进行干燥;
(3)将前述玻璃纤维织物放入低温等离子体处理装置中,对所述玻璃纤维织物进行表面改性处理;
(4)配制偶联剂水溶液,然后倒入空心玻璃微珠,搅拌均匀使偶联剂包覆空心玻璃微珠,再将改性后的空心玻璃微珠置于烘箱中干燥;
(5)将前述的聚四氟乙烯分散液、二氧化钛、聚乙烯醇和经过偶联剂处理的空心玻璃微珠,进行混合搅拌,使其分散均匀,得到的混合物;
(6)将步骤(2)的经过表面改性的玻璃纤维织物浸入步骤(5)中配制好的混合物中,并将其放置于的烘箱中干燥,重复几次,即得到本发明的A级防火天花软膜。
6.根据利要求5所述制备方法,其特征在于,所述偶联剂为γ-(甲基丙烯酰氧)丙基三甲氧基硅烷。
7.根据利要求5所述制备方法,其特征在于,所述步骤(2)中,将玻璃纤维织物放入含有丙酮的超声波清洗机中清洗,以去除玻璃纤维表面的污物。
8.根据利要求5所述制备方法,其特征在于,所述步骤(3)中,将前述清洁的玻璃纤维织物放入低温等离子体处理装置中,介质选用厚度为0.2~2mm的石英板,与地电极之间的放电间隙设置为1~5mm,设定低温等离子体处理装置的电源频率为5~15kHz,外加电压峰值为10~30kV,主放电电流脉冲为尖电流脉冲形式,放电功率为50~90 W。
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Denomination of invention: A class A fireproof ceiling soft film and preparation method thereof Effective date of registration: 20220913 Granted publication date: 20191206 Pledgee: Zhejiang Tailong commercial bank Limited by Share Ltd. Quzhou green franchise branch Pledgor: QUZHOU LONGWEI NEW MATERIAL CO.,LTD. Registration number: Y2022330002190 |