CN117343266A - 一种用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料 - Google Patents
一种用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料 Download PDFInfo
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Abstract
本发明涉一种用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它由A组分和B组分按质量比1:(1‑1.2)混合而成,所述B组分为多亚甲基多苯基多异氰酸酯150‑180份,A组分按重量份数计包括:聚醚多元醇组合物35‑55份、聚苯酐酯多元醇45‑65份、阻燃剂25‑35份、化学发泡剂0.3‑0.6份、物理发泡剂20‑30份、匀泡剂0.5‑2份和催化剂7‑15份;聚醚多元醇组合物包括如下重量份数的组分:5‑15份聚醚多元醇X、15‑20份聚醚多元醇Y、20‑25份聚醚多元醇Z。本发明提高了聚氨酯硬泡的交联度,解决了常规喷涂施工时,粘接差、抗拉强度低的问题,还解决了常规喷涂料在气膜钢筋混凝土穹顶结构施工时泡沫平整度差的问题。
Description
技术领域
本发明属于聚氨酯技术领域,涉及一种喷涂聚氨酯材料,具体涉及一种用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料。
背景技术
气膜钢筋混凝土穹顶结构是一种适合大跨度、大空间的建筑结构,具有结构力学性能好、仓储空间效率高、外形美观、节能环保、构建灵活、建设周期短、防水防火、自洁性好等优点,目前广泛应用于粮仓、煤仓、体育馆、展览馆等领域,在我国具有广阔的应用前景。
它以性能优良的涂层织物膜材PVC为空间模板,按照设计要求固定在环形地基基础上,向膜材内充气并保持膜内恒压状态作为施工荷载支撑,成型后依次在膜材内表面进行界面剂、聚氨酯喷涂、分层绑扎钢筋安装、混凝土喷射等工作,主要工艺流程如下所示。
聚氨酯保温层在整个系统构造中起到非常重要的作用,既起到气膜仓内支撑作用,又要在钢筋标签固定中起到抗拉伸的固定作用,聚氨酯在施工过程中需要分遍喷涂,以减少发泡产生的热量对膜材的损害,分遍喷涂会造成聚氨酯落泡的产生,对聚氨酯层与层的粘接有很大的影响,因此这种系统构造对聚氨酯本身的抗拉强度有更严苛的要求。常规喷涂料在喷涂气膜钢筋混凝土穹顶结构时存在泡沫平整度差、粘接差、抗拉强度低的问题。
发明内容
针对上述现有技术存在的缺陷,本发明目的是为了克服现有技术的不足而提供一种用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料。
本发明在于提供一种用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它由A组分和B组分按质量比1:(1-1.2)混合而成,所述B组分为多亚甲基多苯基多异氰酸酯150-180份;
所述A组分按重量份数计包括:聚醚多元醇组合物35-55份、聚酯多元醇45-65份、阻燃剂25-35份、化学发泡剂0.3-0.6份、物理发泡剂20-30份、匀泡剂0.5-2份和催化剂7-15份,所述聚酯多元醇为苯酐聚酯多元醇;所述聚醚多元醇组合物包括如下重量份数的组分:5-15份聚醚多元醇X、15-20份聚醚多元醇Y、20-25份聚醚多元醇Z;所述的聚醚多元醇Y是以二乙烯三胺或三羟甲基丙烷为起始剂、环氧丙烷扩链,粘度为1500~2000MPa·s/50℃且羟值为500-650mg KOH/g。
具体地,所述聚醚多元醇Z是以山梨醇为起始剂、环氧丙烷扩链、环氧乙烷封端,粘度为1200~2200MPa·s/25℃且羟值为260-400mgKOH/g。
具体地,所述聚醚多元醇X是以丙二醇为起始剂、环氧丙烷扩链、环氧乙烷封端,粘度为600~1200MPa·s/25℃且羟值为30-40mgKOH/g。
具体地,所述的阻燃剂为三(氯异丙基)磷酸酯(TCPP)和磷酸三乙酯(TEP)中的一种或两种组成的混合物。
具体地,所述匀泡剂为非水解硅碳类表面活性剂。本申请中以非水解硅碳类表面活性剂作为泡沫稳定剂,聚氨酯泡沫具有很好的尺寸稳定性,并可改善发泡料的流动性,解决了常规喷涂料在气膜钢筋混凝土穹顶结构施工时泡沫平整度差的问题。
具体地,所述化学发泡剂为去离子水,所述物理发泡剂为1,1,1,3,3-五氟丙烷。
具体地,所述催化剂为选自二丁基锡二月桂酸酯、Dabco PT302、N,N-二甲基乙醇胺、Dabco PT302、二丁基锡二月桂酸酯、Dabco1030和五甲基二亚乙基三胺中的一种或多种组成的混合物。
具体地,所述多亚甲基多苯基多异氰酸酯为选自Desmodur 44V20L、万华PM200、巴斯夫M20S、陶氏MR200和亨斯曼5005中的一种或多种组成的混合物。
由于上述技术方案运用,本发明与现有技术相比具有下列优点:
本发明用喷涂气膜钢筋混凝土穹顶结构的聚氨酯材料,本申请以A组分高官能度的聚醚多元醇、聚酯多元醇、催化剂、阻燃剂和泡沫稳定剂、发泡剂的协同作用下,与B组分多亚甲基多苯基多异氰酸酯制备形成高抗拉强度的硬质聚氨酯泡沫,提高了聚氨酯硬泡的交联度,解决了常规喷涂施工时,粘接差、抗拉强度低的问题。此外,本申请中以非水解硅碳类表面活性剂作为泡沫稳定剂,聚氨酯泡沫具有很好的尺寸稳定性,并可改善发泡料的流动性,解决了常规喷涂料在气膜钢筋混凝土穹顶结构施工时泡沫平整度差的问题。
具体实施方式
下面结合具体实施例对本发明做进一步详细的说明,但本发明并不限于以下实施例。实施例中采用的实施条件可以根据具体使用的不同要求做进一步调整,未注明的实施条件为本行业中的常规条件。
实施例1
本实施例提供一种气膜钢筋混凝土穹顶结构的聚氨酯保温材料,包含A组分和B组分(A组分和B组分的质量比为1:1)(此实施例中1份为1kg,下同),
其中,A组分包括:聚醚多元醇组合物35份(包含5份聚醚多元醇X(C2040)、15份聚醚多元醇Y(POLYOL TP360)和15份聚醚多元醇Z(JH350)、65份聚酯多元醇PS2009、阻燃剂30份TCPP、1份匀泡剂M8805、11份催化剂(2份N,N-二甲基乙醇胺、2.5份Dabco PT302、0.5份二丁基锡二月桂酸酯、3份Dabco1030和3份五甲基二亚乙基三胺)、0.3份去离子水、30份1,1,1,3,3-五氟丙烷;
B组分为172份PM200(购自烟台万华);
上述气膜钢筋混凝土穹顶结构的聚氨酯保温材料的制备方法,包括如下步骤:(a)按照质量配比称量聚醚多元醇X、聚醚多元醇Y、聚醚多元醇Z、聚酯多元醇、阻燃剂、化学发泡剂、物理发泡剂、匀泡剂和催化剂,混合形成A组分;(b)再称量多亚甲基多苯基多异氰酸酯作为B组分;将A组分和B组分按质量比1:1进行混合,经聚氨酯发泡喷涂机混合发泡喷涂于气膜钢筋混凝土穹顶结构表面以发泡成型即可。
实施例2
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:A组分包括:聚醚多元醇组合物50份(包含10份聚醚多元醇X(C2040)、15份聚醚多元醇Y(POLYOL TP360)和25份聚醚多元醇Z(JH350)、50份聚酯多元醇PS2009、阻燃剂25份TCPP、0.5份匀泡剂M8805、8份催化剂(1份N,N-二甲基乙醇胺、2份DabcoPT302、1.5份二丁基锡二月桂酸酯、2份Dabco1030和1.5份五甲基二亚乙基三胺)、0.3份去离子水、20份1,1,1,3,3-五氟丙烷;B组分为153份PM200(购自烟台万华)。
实施例3
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:聚醚多元醇组合物55份(包含15份聚醚多元醇X(C2040)、20份聚醚多元醇Y(POLYOL TP360)和20份聚醚多元醇Z(JH350)、45份聚酯多元醇PS2009、阻燃剂35份TCPP、2份匀泡剂M8805、15份催化剂(2份N,N-二甲基乙醇胺、4份Dabco PT302、1份二丁基锡二月桂酸酯、4份Dabco1030和4份五甲基二亚乙基三胺)、0.6份
去离子水、30份1,1,1,3,3-五氟丙烷;B组分为182份PM200(购自烟台万华)。
实施例4
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:聚醚多元醇组合物为45份,包含10份C2040、20份POLYOL TP360和15份JH350,以及55份聚酯多元醇PS2009。
实施例5
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:聚醚多元醇组合物为40份,包含10份C2040、15份POLYOL TP360和15份JH350,以及60份聚酯多元醇PS2009。
实施例6
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:聚醚多元醇组合物35份,包含10份C2040、10份POLYOL TP360和15份JH350。
实施例7
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:阻燃剂为30份,包含20份TCPP和10份TEP。
实施例8
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:阻燃剂30份,包含10份TCPP和20份TEP。
实施例9
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:催化剂的组分不同,包含1.5份N,N-二甲基乙醇胺、2.5份DabcoPT302、1份二丁基锡二月桂酸酯、3份Dabco1030和3份五甲基二亚乙基三胺。
实施例10
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:催化剂的组分不同,包含1份N,N-二甲基乙醇胺、4份DabcoPT302、1份二丁基锡二月桂酸酯、3份Dabco1030和3份五甲基二亚乙基三胺。
实施例11
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:催化剂的组分不同,包含2份N,N-二甲基乙醇胺、3份DabcoPT302、1份二丁基锡二月桂酸酯、3.5份Dabco1030和2份五甲基二亚乙基三胺。
实施例12
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:催化剂的组分不同,包含1份N,N-二甲基乙醇胺、3份DabcoPT302、0.8份二丁基锡二月桂酸酯、3.5份Dabco1030和4份五甲基二亚乙基三胺。
实施例13
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:0.5份去离子水、28份1,1,1,3,3-五氟丙烷。
实施例14
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:0.6份去离子水、25份1,1,1,3,3-五氟丙烷。
实施例15
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:A组分和B组分的质量比为1:1.1。
实施例16
本实施例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:A组分和B组分的质量比为1:1.2。
对比例1
本对比例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:不添加聚醚多元醇X,聚醚多元醇组合物为30份(包含15份POLYOLTP360、15份JH350)。
对比例2
本对比例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:不添加聚醚多元醇Y,聚醚多元醇组合物20份(包含5份C2040、15份JH350)。
对比例3
本对比例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:不添加聚醚多元醇Z,聚醚多元醇组合物20份(包含5份C2040、15份POLYOL TP360)。
对比例4
本对比例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:聚醚多元醇Y采用HKOL-403(羟值为770±20mgKOH/g)。
对比例5
本对比例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:聚醚多元醇组合物80份(包含10份C2040、15份POLYOL TP360、55份JH350)。
对比例6
本对比例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:A组分和B组分的质量比为1:0.9。
对比例7
本对比例提供一种超气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它与实施例1中的基本一致,不同的是:A组分和B组分的质量比为1:1.3。
将实施例1-16、对比例1-7中的聚氨酯保温材料进行性能测试,数据列于表1中;具体测试标准如下:密度GB/T 6343-2009、抗压强度GB/T 8813-2008、闭孔率GB/T 10799-2008、导热系数GB/T 10294-2008、粘结强度GB 50404-2007附录B和阻燃GB 8624-2012。
表1实施例1-16及对比例1-17中聚氨酯保温材料的性能数据表
采用本申请的方法所形成聚氨酯泡沫制品,其泡沫成型密度在35-40Kg/m3,压缩强度160KPa以上,闭孔率大于90%,导热系数在0.021W/m·K附近,抗拉强度250KPa以上,其所形成的成品泡沫成型密度稳定,抗拉强度高,粘接强度高,导热性能好,具有优异的保温性能。
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围,凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。
Claims (8)
1.一种用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,它由A组分和B组分按质量比1:(1-1.2)混合而成,所述B组分为多亚甲基多苯基多异氰酸酯150-180份,其特征在于:
所述A组分按重量份数计包括:聚醚多元醇组合物35-55份、聚酯多元醇45-65份、阻燃剂25-35份、化学发泡剂0.3-0.6份、物理发泡剂20-30份、匀泡剂0.5-2份和催化剂7-15份,所述聚酯多元醇为苯酐聚酯多元醇;所述聚醚多元醇组合物包括如下重量份数的组分:5-15份聚醚多元醇X、15-20份聚醚多元醇Y、20-25份聚醚多元醇Z;所述的聚醚多元醇Y是以二乙烯三胺或三羟甲基丙烷为起始剂、环氧丙烷扩链,粘度为1500~2000MPa·s/50℃且羟值为500-650mgKOH/g。
2.根据权利要求1所述用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,其特征在于:所述聚醚多元醇Z是以山梨醇为起始剂、环氧丙烷扩链、环氧乙烷封端,粘度为1200~2200MPa·s/25℃且羟值为260-400mgKOH/g。
3.根据权利要求1所述用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,其特征在于:所述聚醚多元醇X是以丙二醇为起始剂、环氧丙烷扩链、环氧乙烷封端,粘度为600~1200MPa·s/25℃且羟值为30-40mgKOH/g。
4.根据权利要求1所述用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,其特征在于:所述的阻燃剂为三(氯异丙基)磷酸酯和磷酸三乙酯中的一种或两种组成的混合物。
5.根据权利要求1所述用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,其特征在于:所述匀泡剂为非水解硅碳类表面活性剂。
6.根据权利要求1所述用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,其特征在于:所述化学发泡剂为去离子水,所述物理发泡剂为1,1,1,3,3-五氟丙烷。
7.根据权利要求1所述用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,其特征在于:所述催化剂为选自二丁基锡二月桂酸酯、Dabco PT302、N,N-二甲基乙醇胺、Dabco1030和五甲基二亚乙基三胺中的一种或多种组成的混合物。
8.根据权利要求1所述用于气膜钢筋混凝土穹顶结构的聚氨酯保温材料,其特征在于:所述多亚甲基多苯基多异氰酸酯为选自Desmodur 44V20L、万华PM200、巴斯夫M20S、陶氏MR200和亨斯曼5005中的一种或多种组成的混合物。
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