CN104592485B - 阻燃型高强柔性双液注浆材料及其制备方法 - Google Patents
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Abstract
本发明涉及一种阻燃型高强柔性双液注浆材料及其制备方法,旨在解决现有注浆材料稳定性不好、柔韧性差、抗压强度低且成本高的技术难题。本发明采用聚丙二醇(PPG)、水玻璃、乳化剂、催化剂、山梨醇、水,形成A组分;将多亚甲基多苯基多异氰酸酯、乙酰基柠檬酸酯作为B组分,使用时按0.65~1.3:1的重量比混合A、B组分。本发明注浆材料制备简单、成本低、性能稳定;注浆材料粘度低、固化时间可控;固化后阻燃性优异、强度高、韧性好、粘结力好、在有水环境下不发泡仍能保持较高的力学性能。本发明适用于破碎煤层、岩层、混凝土裂缝以及高速路的裂缝、路基的快速加固和封堵漏水处理。
Description
技术领域
本发明涉及建筑材料技术领域,具体涉及一种阻燃型高强柔性双液注浆材料及其制备方法。
背景技术
随着地下隧道、矿井、水电站、洞室以及高速路和高铁的迅猛发展,所遇到的工程地质问题也越来越多,很多问题需要快速有效的处理。在这种条件下,快速凝固型的注浆技术是巷道围岩控制以及混凝土、高速路裂隙处理的有效途径。
当前常用的无机注浆材料,如水玻璃、水泥等,虽然成本低,反应不放热,但是固化时间长,渗透性和韧性差。现有的有机注浆材料虽然力学性能优异、固化速度可调,但是阻燃性差、成本高。如中国专利文献CN102504184A公开了一种增强型水性聚氨酯固化剂的制备方法,在水性聚氨酯固化剂中引入PPG以此来增加亲水性能;中国专利文献CN103756291A公开了一种聚氨酯-水玻璃复合灌浆材料及其制备方法与应用,其采用预聚体来做,制作过程复杂且产品的性能及稳定性不易控制。
发明内容
本发明要解决的技术问题是提供一种稳定性好、柔韧性好、抗压强度高且成本低的阻燃型高强柔性双液注浆材料,同时公开了工艺简单的制备方法。
为解决上述技术问题,本发明采用的技术方案是:
设计一种阻燃型高强柔性双液注浆材料,包括使用时按0.65~1.3:1的重量比混合的A组分和B组分,以重量份计,
所述A组分包括聚丙二醇(PPG) 8~20份、水8~12份、水玻璃60~80份、山梨醇2~6份、表面活性剂0.5~2份、催化剂1~3份;
所述B组分包括多亚甲基多苯基多异氰酸酯60~80份、乙酰基柠檬酸酯20~40份。
上述阻燃型高强柔性双液注浆材料的制备方法,包括如下步骤:
(1)A组分制备:向8~20份聚丙二醇中加入 8~12份水,搅拌均匀后再依次加入60~80份水玻璃、2~6山梨醇、0.5~2份表面活性剂、1~3份催化剂,继续搅拌均匀即成;
(2)B组分制备:向 60~80份多亚甲基多苯基多异氰酸酯中加入 20~40份的乙酰基柠檬酸酯,搅拌均匀后即成;
(3)混合:将A组分和B组分按0.65~1.3:1的重量比混合均匀,常温反应固化。
与以往的灌浆材料不同,本发明用水溶性的PPG和水玻璃混合可以和异氰酸酯协同反应,进行固化。制作工艺简单,注浆材料稳定性好。
上述聚丙二醇可优选为PPG200、PPG400、PPG600、PPG800中的至少一种。
上述水玻璃可优选为模数为2.2~2.9的硅酸钠或硅酸钾溶液。
上述表面活性剂可优选为十六烷基三甲基溴化铵、十六烷基三甲基氯化铵、十八烷基三甲基溴化铵或十八烷基三甲基氯化铵中的至少一种。
上述催化剂可优选为三乙烯二胺、二甲基乙醇胺、三亚乙基二胺、五甲基二乙烯三胺、双(3-二甲氨基丙基)胺、三(二甲氨丙基)六氢三嗪中的至少一种。
上述多亚甲基多苯基多异氰酸酯可优选为PM200。
上述乙酰柠檬酸酯可优选为乙酰基柠檬酸三乙酯、乙酰基柠檬酸三丁酯、乙酰柠檬酸三戊酯、乙酰柠檬酸三己酯中的至少一种。
本发明具有积极有益的技术效果:
1.在材料组份中引进了无机水玻璃,相比于目前常用的聚氨酯、环氧树脂及聚丙烯酸盐等高分子有机注浆材料,本发明所述的双液注浆材料阻燃性能优异、成本低。
2.由于PPG和多亚甲基多苯基多异氰酸酯是在注浆时发生的反应,更容易和一起固化的水玻璃形成三维空间网状结构,因而具有很好的抗压强度;乙酰柠檬酸酯的加入使得注浆材料柔韧性增加,大大提高了材料的粘结力以及抗折强度。
3.本发明所述的双液注浆材料粘度低、固化时间可调。所用原料均可从市场购得,且不需要加工处理,工艺流程简单,贮存期长,更有利于推广应用。
具体实施方式
以下结合具体实施例进一步阐述本发明。下述实施例中所用的原材料等,如无特别说明,均为市售。
实施例1 一种阻燃型高强柔性双液注浆材料,制备方法如下:
(1)A组分制备:称取 8份PPG400、加入 8份水并搅拌均匀,然后加入78.5份模数为2.3的水玻璃、2份山梨醇、0.5份十六烷基三甲基氯化铵、3份催化剂三乙烯二胺,继续搅拌均匀,封装备用;
(2)B组分制备:称取80份的多亚甲基多苯基多异氰酸酯加入 20份的乙酰柠檬酸三戊酯并搅拌均匀,封装备用;
(3)混合固化:将A组分和B组分按照A:B=1:1的质量比混合并搅拌均匀,常温反应固化。
在常温下测试该材料6小时的产品指标如下:
抗压强度:70.3MPa;抗折强度:26MPa;抗折实验时的最大形变:6.1mm;
粘结强度:2.7MPa;氧指数:50.2%。
实施例2 一种阻燃型高强柔性双液注浆材料,制备方法如下:
(1)A组分制备:称取 8份PPG200、8份PPG600,加入 12份水并搅拌均匀,然后加入64份模数为2.9的水玻璃、4份山梨醇、0.5份十八烷基三甲基氯化铵、0.5份十八烷基三甲基溴化铵、1份五甲基二乙烯三胺、2份双(3-二甲氨基丙基)胺,继续搅拌均匀,封装备用;
(2)B组分制备:称取60份的多亚甲基多苯基多异氰酸酯加入 20份的乙酰柠檬酸三乙酯、20份的乙酰柠檬酸三己酯并搅拌均匀,封装备用;
(3)混合固化:将A组分和B组分按照A:B=1:1质量比混合并搅拌均匀,并在常温下测试材料6小时的产品指标如下:
抗压强度:63.2MPa;抗折强度:21MPa;抗折位移:12.4mm;粘结强度:3.5MPa;氧指数:48.3%。
实施例3 一种阻燃型高强柔性双液注浆材料,制备方法如下:
(1)制备A组分:称取6份PPG400、10份PPG800,加入 12份水并搅拌均匀,然后加入66份模数为2.8的水玻璃、3份山梨醇、1份十六烷基三甲基氯化铵、2份三(二甲氨丙基)六氢三嗪,继续搅拌均匀,封装备用;
(2)制备B组分:称取70份的多亚甲基多苯基多异氰酸酯加入 20份的乙酰柠檬酸三丁酯、10乙酰柠檬酸三乙酯份并搅拌均匀,封装备用;
(3)混合固化:将A组分和B组分按照A:B=0.65:1质量比混合并搅拌均匀,常温反应固化,并在常温下测试材料6小时的产品指标如下:
抗压强度:59.6MPa;抗折强度:20.1MPa;抗折位移:15.3mm;粘结强度:4.1MPa;氧指数:47.6%。
实施例4 一种阻燃型高强柔性双液注浆材料,制备方法如下:
(1)制备A组分:称取 10份PPG600、加入 10份水并搅拌均匀,然后加入71份模数为2.5的水玻璃、5份山梨醇、1份十六烷基三甲基氯化铵、2份二甲基乙醇胺、1份三乙烯二胺,继续搅拌均匀,封装备用;
(2)制备B组分:称取80份的多亚甲基多苯基多异氰酸酯加入 20份的乙酰柠檬酸三戊酯并搅拌均匀,封装备用;
(3)混合固化:将A组分和B组分按照A:B=1.3:1质量比混合并搅拌均匀,常温反应固化,并在常温下测试材料6小时的产品指标如下:
抗压强度:67.0MPa;抗折强度:23MPa;抗折位移:8.6mm;粘结强度:2.4MPa;氧指数:51.6%。
实施例5 一种阻燃型高强柔性双液注浆材料,制备方法如下:
(1)制备A组分:称取10份PPG400、10份PPG600,加入 12份水并搅拌均匀,然后加入61.5份模数为2.7的水玻璃、3份山梨醇、0.5份十六烷基三甲基氯化铵、2份二甲基乙醇胺、1份三乙烯二胺,继续搅拌均匀,封装备用;
(2)制备B组分:称取60份的多亚甲基多苯基多异氰酸酯加入 20份的乙酰柠檬酸三己酯、20乙酰柠檬酸三乙酯并搅拌均匀,封装备用;
(3)混合固化:将A组分和B组分按照A:B=0.65:1质量比混合并搅拌均匀,常温反应固化,并在常温下测试材料6小时的产品指标如下:
抗压强度:52.4MPa;抗折强度:18MPa;抗折位移:16.2mm;粘结强度:3.6MPa;氧指数:47.2%。
虽然,上文中已经用一般性说明及具体实施方案对本发明作了详尽的描述,但在本发明基础上,可以对之作一些修改或改进,这对本领域技术人员而言是显而易见的。因此,在不偏离本发明精神的基础上所做的这些修改或改进,均属于本发明要求保护的范围。
Claims (1)
1.一种阻燃型高强柔性双液注浆材料的制备方法,其特征在于,制备方法如下:
(1)A组分制备:称取 8份PPG400、加入 8份水并搅拌均匀,然后加入78.5份模数为2.3的水玻璃、2份山梨醇、0.5份十六烷基三甲基氯化铵、3份催化剂三乙烯二胺,继续搅拌均匀,封装备用;
(2)B组分制备:称取80份的多亚甲基多苯基多异氰酸酯加入 20份的乙酰柠檬酸三戊酯并搅拌均匀,封装备用;
(3)混合固化:将A组分和B组分按照A:B=1:1的质量比混合并搅拌均匀,常温反应固化。
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