CN112538154A - 一种用于钢面板背后注浆扩散的双组份高聚物材料及其制备方法 - Google Patents
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Abstract
本发明公开了一种用于钢面板背后注浆扩散的双组份高聚物材料及其制备方法,所述高聚物材料含有A组分和B组分,其中所述A组分包括按照质量百分比含量的多元醇45%、磷系阻燃剂36%、胺类催化剂2%、物理发泡剂15%,硅类表面活性剂1%以及水1%;所述B组分为多亚甲基多苯基异氰酸酯;将所述A组分与B组分按照质量百分比含量100:100混合后获得所述高聚物材料。本方的高聚物材料对建筑物结构之渗漏水有立即止漏的效果,可广泛应用于堤坝、地铁、隧道、涵箱、地盘改善、土方塌陷、水库、港湾工程、顶板、裂缝、施工缝、伸缩缝、地下室发丝状裂缝等止漏工程中。
Description
技术领域
本发明涉及高聚物材料技术领域,具体涉及一种用于钢面板背后注浆扩散的双组份高聚物材料及其制备方法。
技术背景
近年来,我国水利基础设施的建设取得了较为瞩目的成就。目前已建堤防总长达41万公里,各类水库9.8万多座,是我国防洪减灾领域的重要组成部分,然而我国堤防建设历史悠久,多经历年加高倍厚而成,建筑质量不足,隐患多、地质条件复杂,汛期险情频发。同样,已建水库中,病险率达57.1%,大部分中小型病险水库都需要进行防渗加固。这些水利设施一旦失事,影响重大,严重威胁人民生命财产安全。因此,急需提高水利基础设施的防渗加固技术与装备水平。
目前现行的防渗加固技术包括混凝土防渗墙、水泥土搅拌桩、高压喷射灌浆技术等,然而这些技术的共性问题包括对堤坝扰动破坏大,施工周期长,效率不足,设备庞大施工不便,成墙厚度过大等限制了其进一步的应用。另一方面灌浆材料如水泥浆类、水泥黏土浆液、超细水泥浆液等各种改性水泥浆液是目前各个工程实践中的主要材料。但是其凝结时间长、易离析泌水收缩开裂、刚度大等缺点限制了其进一步应用。化学灌浆是在悬浊液灌浆基础上发展起来的。化学浆液中主要包括水玻璃类、丙烯酰胺类、木质素类、环氧树脂类、鉻木素类、脲醛树脂类等。但以上材料与土体固结效果差、固结体抗渗性不足、耐久性差,会对环境产生一定污染,同样影响其对堤坝的防渗加固效果。
发明内容
鉴于现有技术的缺陷,本发明旨在于提供一种用于钢面板背后注浆扩散的双组份高聚物材料及其制备方法,改高聚物材料实现了亲水性好,遇水后会立即进行聚合反应,分散乳化或发泡膨胀,并与砂石泥土固结成弹性固结体,迅速堵塞裂缝,永久性止水。
为了实现上述目的,本发明采用的技术方案如下:
用于钢面板背后注浆扩散的双组份高聚物材料,所述高聚物材料含有A组分和B组分,其中
所述A组分包括按照质量百分比含量的多元醇45%、磷系阻燃剂 36%、胺类催化剂2%、物理发泡剂15%,硅类表面活性剂1%以及水1%;
所述B组分为多亚甲基多苯基异氰酸酯;
将所述A组分与B组分按照质量百分比含量100:100混合后获得所述高聚物材料。
需要说明的是,所述多元醇为苯酐聚酯多元醇和蔗糖聚醚多元醇的混合物。
需要说明的是,所述物理发泡剂为HCFC-141b。
本发明还提供一种制备用于钢面板背后注浆扩散的双组份高聚物材料的方法,所述方法包括以下步骤:
S1将多元醇、磷系阻燃剂、胺类催化剂、物理发泡剂,硅类表面活性剂以及水按比例加入容器中,控制加热温度在30℃-50℃搅拌均匀,制成A组分;
S2将B组分多亚甲基多苯基异氰酸酯加入A组分后获得所述的双组份高聚物材料。
本发明的有益效果在于:
(1)轻质。双组份高聚物材料应用于堤坝定向劈裂注浆时,其常见密度约为水泥浆或混凝土材料的1/10,注浆施工后不会对堤坝自身增加太多荷重;
(2)早强。高聚物注浆材料能够迅速膨胀并在设定时间内胶凝固化,在15分钟内可达到其最终强度的90%,可使堤坝整体强度快速恢复,可大大缩短施工工期。
(3)膨胀力大。高聚物注浆材料发生化学反应时可以产生最大达10MPa的膨胀力;应用于堤坝定向劈裂注浆时,其膨胀力约为 0.2-0.4Mpa,可以轻松实现定向劈裂土体、生成超薄型高聚物防渗体之目的,同时还能对劈裂缝周围土体实现挤密加固;
(4)对环境无污染。高聚物注浆材料长期埋入地下时不会污染周围土壤和地下水,不会对环境造成任何影响。
(5)防渗性能优良。高聚物注浆材料的抗渗性能随高聚物材料密度的增大而提高。应用于堤坝定向劈裂注浆时,其常见的密度范围为0.1-0.3g/cm3,起始渗水压力约为0.3-0.7Mpa,可满足一般堤坝防渗加固的实际需要。
(6)耐久性好。高聚物材料长期埋入土中,可以抵抗霉菌和真菌侵蚀,不会发霉和腐烂,不会滋生昆虫和被老鼠等啮齿类动物食用,在地基环境下一般的含盐、酸、或者洗涤剂的水溶液中,高聚物材料有良好的稳定性;即高聚物材料有长期的稳定性和在不利环境条件下的耐久性,在地下使用寿命可达30年以上。
(7)力学性能优良。高强度、低模量、高柔韧性,凝固时无体积收缩;能与周围土体紧密结合且变形协调,特别是能适应较大的堤坝变形而不产生裂缝或破坏,彻底克服了水泥浆脉易折断的缺点。
具体实施方式
以下将对本发明作进一步的描述,需要说明的是,本实施例以本技术方案为前提,给出了详细的实施方式和具体的操作过程,但本发明的保护范围并不限于本实施例。
本发明为一种用于钢面板背后注浆扩散的双组份高聚物材料,所述高聚物材料含有A组分和B组分,其中
所述A组分包括按照质量百分比含量的多元醇45%、磷系阻燃剂 36%、胺类催化剂2%、物理发泡剂15%,硅类表面活性剂1%以及水1%;
所述B组分为多亚甲基多苯基异氰酸酯;
将所述A组分与B组分按照质量百分比含量100:100混合后获得所述高聚物材料。
需要说明的是,所述多元醇为苯酐聚酯多元醇和蔗糖聚醚多元醇的混合物。
需要说明的是,所述物理发泡剂为HCFC-141b。
本发明还提供一种制备用于钢面板背后注浆扩散的双组份高聚物材料的方法,所述方法包括以下步骤:
S1将多元醇、磷系阻燃剂、胺类催化剂、物理发泡剂,硅类表面活性剂以及水按比例加入容器中,控制加热温度在30℃-50℃搅拌均匀,制成A组分;
S2将B组分多亚甲基多苯基异氰酸酯加入A组分后获得所述的双组份高聚物材料。
基于本发明的高聚物材料,与现行的堤坝除险加固技术相比,具有以下特点:
1、无水、快捷:双组份发泡聚氨酯是优良的无水高聚物注聚材料。项目开发的高聚物注浆技术施工快捷,不需养生,大幅度节省工期,尤其适用于堤坝快速堵漏和管涌抢险;
2、超薄、微创:项目开发的高聚物定向劈裂注浆、超薄帷幕及防渗墙注浆技术能构建厚度为1㎝左右的坝体防渗体系。帷幕或墙体厚度是现行各种帷幕及造墙技术厚度的几十分之一,而且采用了静压成孔方式,极大地减少了对原有坝体的扰动和破坏;
3、轻质、高韧:采用项目成果构建坝体防渗体系不仅具有无水、超薄等特点,而且材料轻质(自重一般为水泥浆或混凝土材料的十分之一,其密度可以根据工程需要灵活调节),柔韧性好,与土体紧密粘合,协调变形;
4、经济、耐久:与现行各类防渗帷幕及造墙技术相比,项目开发的高聚物定向劈裂注浆、超薄帷幕及防渗墙注浆技术造价较低。高聚物材料在一般土中的寿命可达100年以上。
对于本领域的技术人员来说,可以根据以上的技术方案和构思,给出各种相应的改变,而所有的这些改变,都应该包括在本发明权利要求的保护范围之内。
Claims (4)
1.一种用于钢面板背后注浆扩散的双组份高聚物材料,其特征在于,所述高聚物材料含有A组分和B组分,其中
所述A组分包括按照质量百分比含量的多元醇45%、磷系阻燃剂36%、胺类催化剂2%、物理发泡剂15%,硅类表面活性剂1%以及水1%;
所述B组分为多亚甲基多苯基异氰酸酯;
将所述A组分与B组分按照质量百分比含量100:100混合后获得所述高聚物材料。
2.根据权利要求1所述的用于钢面板背后注浆扩散的双组份高聚物材料,其特征在于,所述多元醇为苯酐聚酯多元醇和蔗糖聚醚多元醇的混合物。
3.根据权利要求1所述的用于钢面板背后注浆扩散的双组份高聚物材料,其特征在于,所述物理发泡剂为HCFC-141b。
4.一种制备如权利要求1所述的用于钢面板背后注浆扩散的双组份高聚物材料的方法,其特征在于,所述方法包括以下步骤:
S1将多元醇、磷系阻燃剂、胺类催化剂、物理发泡剂,硅类表面活性剂以及水按比例加入容器中,控制加热温度在30℃-50℃搅拌均匀,制成A组分;
S2将B组分多亚甲基多苯基异氰酸酯加入A组分后获得所述的双组份高聚物材料。
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CN109679052A (zh) * | 2019-01-04 | 2019-04-26 | 郑州大学 | 一种地下管道双浆速凝高聚物修复材料及其制备方法 |
CN109810237A (zh) * | 2019-01-04 | 2019-05-28 | 南方工程检测修复技术研究院 | 一种单浆可承重反应材料及其制备方法 |
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