CN113979757B - 一种水泥窑窑口专用浇注料 - Google Patents
一种水泥窑窑口专用浇注料 Download PDFInfo
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Abstract
本发明公开了一种水泥窑窑口专用浇注料,其原料包括莫来石、碳化硅、钛铝酸钙、刚玉、水泥、氧化铝微粉、硅微粉、氮化硅粉、钛酸锶粉、硅线石粉、碳酸锆粉、外加纤维、石墨烯改性减水剂;莫来石为5‑3mm莫来石、3‑1mm莫来石、1‑0.088mm莫来石、<0.088mm莫来石按重量比为15‑30:5‑12:2‑7:5‑12的混合物;碳化硅为1‑0.088mm碳化硅和<0.088mm碳化硅按重量比为1‑3:2‑4的混合物;钛铝酸钙为3‑1mm钛铝酸钙、<1mm钛铝酸钙按重量比为5‑8:16‑23的混合物;刚玉为3‑1mm刚玉、1‑0.5mm刚玉、<0.5mm刚玉按重量比为7‑13:3‑8:1‑3的混合物。
Description
技术领域
本发明涉及材料技术领域,尤其涉及一种水泥窑窑口专用浇注料。
背景技术
水泥回转窑的出料口简称窑口,其使用条件恶劣,除承受高达1400℃高温外,还承受水泥窑熟料连续出料压力、回转窑回转机械应力、氯碱侵蚀对其带来的影响,因此,窑口耐火材料受到更为苛刻的高温、热震、冲刷和磨损作用,因而水泥窑窑口使用的浇注料必须具有良好的抗热震性、耐磨性和耐碱性。然而,现有的浇注料仍存在抗碱侵蚀性能差、热震稳定性能差等缺点,导致水泥窑窑口的使用寿命在3到8个月不等,不能满足客户的需求。
发明内容
基于背景技术存在的技术问题,本发明提出了一种水泥窑窑口专用浇注料,其抗热震性好,强度高,耐碱侵蚀性能优异,浇注窑口的使用寿命长。
本发明提出的一种水泥窑窑口专用浇注料,其原料按重量份包括:莫来石43-58份、碳化硅6-14份、钛铝酸钙5-13份、刚玉8-15份、水泥1.8-3.7份、氧化铝微粉2-5份、硅微粉2-5份、氮化硅粉5-12份、钛酸锶粉1-5份、硅线石粉+碳酸锆粉13-21份、外加纤维0.01-0.05份、石墨烯改性减水剂0.05-0.18份;
其中,所述莫来石为5-3mm莫来石、3-1mm莫来石、1-0.088mm莫来石、<0.088mm莫来石按重量比为15-30:5-12:2-7:5-12的混合物;
所述碳化硅为1-0.088mm碳化硅和<0.088mm碳化硅按重量比为1-3:2-4的混合物;
所述钛铝酸钙为3-1mm钛铝酸钙、<1mm钛铝酸钙按重量比为5-8:16-23的混合物;
所述刚玉为3-1mm刚玉、1-0.5mm刚玉、<0.5mm刚玉按重量比为7-13:3-8:1-3的混合物。
优选地,所述刚玉为电熔刚玉;所述水泥为铝酸盐水泥。
优选地,所述氧化铝微粉的粒度为3-8μm;所述硅微粉的粒度≤2μm。
优选地,所述氮化硅粉为粒径<0.088mm的氮化硅粉。
优选地,所述钛酸锶粉、硅线石粉、碳酸锆粉的粒度均为300-350目。
优选地,所述硅线石粉、碳酸锆粉的重量比为3-10:2-7。
优选地,所述外加纤维为聚乳酸纤维、氧化锆纤维、不锈钢纤维、聚丙烯纤维中的一种或者多种的混合物。
优选地,所述石墨烯改性减水剂的制备工艺包括以下步骤:将壳聚糖与乙酸水溶液混合,在室温下搅拌3-5h,调节pH为2.5-3,加入烯丙基缩水甘油醚,在48-55℃下搅拌反应15-22h,加入无水乙醇沉淀,过滤、洗涤、干燥得到物料A;将羧基化氧化石墨烯和物料A超声分散在MES缓冲溶液中,然后加入1-(3-二甲基氨基丙基)-3-乙基碳二亚胺和N-羟基丁二酰亚胺,振荡反应3-5h后离心、水洗、得到物料B;将物料B、对氨基苯磺酸钠、异丙醇、蒸馏水混合均匀,球磨20-30h后离心、洗涤、干燥得到物料C;将物料C与去离子水混合,超声分散,加入异丁烯醇聚氧乙烯醚水溶液,再加入过硫酸铵与双氧水搅拌均匀,加热至65-75℃,在氮气的保护下滴加2-甲基丙烯酰氧基乙基磷酸酯溶液、甲基丙烯酸水溶液以及L-抗坏血酸和巯基乙酸的混合水溶液,滴加结束后搅拌至室温,调节pH为6-7得到所述石墨烯改性减水剂。
优选地,在石墨烯改性减水剂的制备过程中,所述壳聚糖、乙酸、烯丙基缩水甘油醚的重量比为1:1:0.3-0.5;羧基化氧化石墨烯、物料A的重量比为1-5:6-10;物料B、对氨基苯磺酸钠的重量比为1:2-5;物料C、异丁烯醇聚氧乙烯醚、过硫酸铵、双氧水、2-甲基丙烯酰氧基乙基磷酸酯、甲基丙烯酸、L-抗坏血酸、巯基乙酸的重量比为3-6:80-95:0.5-1.2:1-1.2:3-5:5-11:0.5-0.9:0.2-0.6。
本发明中所述的MES缓冲溶液为2-(N-吗啡啉)乙磺酸缓冲溶液。
莫来石具有良好的耐高温、抗热震性能,但其不具有微膨胀性能,耐磨性和抗碱性能欠佳;碳化硅具有良好的抗热震、耐磨损性能,但其容易氧化,导热系数高;钛铝酸钙具有较低的膨胀系数和导热系数,且耐磨性好;刚玉具有良好的耐高温、耐磨损性能,但其抗热震性和耐碱蚀性能不佳;本发明所述水泥窑窑口专用浇注料,其具体以莫来石、碳化硅、钛铝酸钙、刚玉四种物质复合作为复合骨料,同时配合了水泥、氧化铝微粉、硅微粉、氮化硅粉、钛酸锶粉、硅线石粉、碳酸锆粉、外加纤维、石墨烯改性减水剂为原料,通过控制莫来石、碳化硅、钛铝酸钙、刚玉的粒径,得到合适的颗粒级配,使所得浇注料抗热震性好,强度高,耐碱侵蚀性能优异,浇注窑口的使用寿命延长至一年以上,与窑内衬相匹配,提高水泥窑的运转率;加入的氮化硅表面会发生氧化形成高活性二氧化硅,并与基体中的氧化铝、Si等反应,提高浇注料的强度,并改善抗侵蚀性能;碳酸锆分解能形成具有良好性能的高活性氧化锆,并在分解过程中形成微孔,与具有微膨胀性的硅线石以及钛酸锶配合,提高了浇注料的抗热震性,保证其高温体积稳定性,避免浇注料发生开裂、掉落等现象;在石墨烯改性减水剂的制备过程中,首先以烯丙基缩水甘油醚为改性剂对壳聚糖进行改性,使烯丙基缩水甘油醚与壳聚糖中的羟基进行了反应,将双键引入到了壳聚糖中,得到了物料A,之后与羧基化氧化石墨烯混合,控制反应的条件,使羧基化氧化石墨烯与物料A中的氨基进行了反应,从而得到了含有双键的石墨烯-壳聚糖,即物料B;之后以对氨基苯磺酸钠为改性剂对物料B进行了改性,将磺酸基引入到了物料B中得到了物料C;之后以物料C为改性剂,并配合加入了含磷单体2-甲基丙烯酰氧基乙基磷酸酯得到了所述石墨烯改性减水剂,其分子中同时含磷、磺酸基、壳聚糖、石墨烯等结构,加入体系中,在体系中分散均匀,能促进水化进程,减水效果显著,且使所得材料微观结构更加密实,提高材料的耐压强度、抗折强度等性能。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
实施例1
本发明提出的一种水泥窑窑口专用浇注料,其原料按重量份包括:莫来石58份、碳化硅6份、钛铝酸钙13份、电熔刚玉8份、铝酸盐水泥3份、氧化铝微粉3份、硅微粉2份、氮化硅粉12份、钛酸锶粉1份、硅线石粉6.3份、碳酸锆粉14.7份、聚乳酸纤维0.01份、石墨烯改性减水剂0.18份;
其中,所述莫来石为5-3mm莫来石、3-1mm莫来石、1-0.088mm莫来石、<0.088mm莫来石按重量比为30:5:7:5的混合物;
所述碳化硅为1-0.088mm碳化硅和<0.088mm碳化硅按重量比为1:3的混合物;
所述钛铝酸钙为3-1mm钛铝酸钙、<1mm钛铝酸钙按重量比为5:23的混合物;
所述刚玉为3-1mm刚玉、1-0.5mm刚玉、<0.5mm刚玉按重量比为7:8:1的混合物;
所述氧化铝微粉的粒度为3-8μm;所述硅微粉的粒度≤2μm;
所述氮化硅粉为粒径<0.088mm的氮化硅粉;
所述钛酸锶粉、硅线石粉、碳酸锆粉的粒度均为300目;
所述石墨烯改性减水剂的制备工艺包括以下步骤:将壳聚糖与乙酸水溶液混合,在室温下搅拌5h,调节pH为2.5,加入烯丙基缩水甘油醚,在55℃下搅拌反应15h,加入无水乙醇沉淀,过滤、洗涤、干燥得到物料A;将羧基化氧化石墨烯和物料A超声分散在MES缓冲溶液中,然后加入1-(3-二甲基氨基丙基)-3-乙基碳二亚胺和N-羟基丁二酰亚胺,振荡反应5h后离心、水洗、得到物料B;将物料B、对氨基苯磺酸钠、异丙醇、蒸馏水混合均匀,球磨20h后离心、洗涤、干燥得到物料C;将物料C与去离子水混合,超声分散,加入异丁烯醇聚氧乙烯醚水溶液,再加入过硫酸铵与双氧水搅拌均匀,加热至70℃,在氮气的保护下滴加2-甲基丙烯酰氧基乙基磷酸酯溶液、甲基丙烯酸水溶液以及L-抗坏血酸和巯基乙酸的混合水溶液,滴加结束后搅拌至室温,调节pH为6得到所述石墨烯改性减水剂;
在石墨烯改性减水剂的制备过程中,所述壳聚糖、乙酸、烯丙基缩水甘油醚的重量比为1:1:0.3;羧基化氧化石墨烯、物料A的重量比为5:6;物料B、对氨基苯磺酸钠的重量比为1:2;物料C、异丁烯醇聚氧乙烯醚、过硫酸铵、双氧水、2-甲基丙烯酰氧基乙基磷酸酯、甲基丙烯酸、L-抗坏血酸、巯基乙酸的重量比为5:80:1:1.2:3:11:0.5:0.6。
实施例2
本发明提出的一种水泥窑窑口专用浇注料,其原料按重量份包括:莫来石43份、碳化硅14份、钛铝酸钙5份、电熔刚玉15份、铝酸盐水泥1.8份、氧化铝微粉5份、硅微粉3份、氮化硅粉5份、钛酸锶粉5份、硅线石粉11份、碳酸锆粉2.2份、不锈钢纤维0.01份、聚丙烯纤维0.04份、石墨烯改性减水剂0.05份;
其中,所述莫来石为5-3mm莫来石、3-1mm莫来石、1-0.088mm莫来石、<0.088mm莫来石按重量比为15:12:2:12的混合物;
所述碳化硅为1-0.088mm碳化硅和<0.088mm碳化硅按重量比为3:2的混合物;
所述钛铝酸钙为3-1mm钛铝酸钙、<1mm钛铝酸钙按重量比为8:16的混合物;
所述刚玉为3-1mm刚玉、1-0.5mm刚玉、<0.5mm刚玉按重量比为13:3:3的混合物;
所述氧化铝微粉的粒度为3-8μm;所述硅微粉的粒度≤2μm;
所述氮化硅粉为粒径<0.088mm的氮化硅粉;
所述钛酸锶粉、硅线石粉、碳酸锆粉的粒度均为350目;
所述石墨烯改性减水剂的制备工艺包括以下步骤:将壳聚糖与乙酸水溶液混合,在室温下搅拌3h,调节pH为3,加入烯丙基缩水甘油醚,在48℃下搅拌反应22h,加入无水乙醇沉淀,过滤、洗涤、干燥得到物料A;将羧基化氧化石墨烯和物料A超声分散在MES缓冲溶液中,然后加入1-(3-二甲基氨基丙基)-3-乙基碳二亚胺和N-羟基丁二酰亚胺,振荡反应3h后离心、水洗、得到物料B;将物料B、对氨基苯磺酸钠、异丙醇、蒸馏水混合均匀,球磨25h后离心、洗涤、干燥得到物料C;将物料C与去离子水混合,超声分散,加入异丁烯醇聚氧乙烯醚水溶液,再加入过硫酸铵与双氧水搅拌均匀,加热至75℃,在氮气的保护下滴加2-甲基丙烯酰氧基乙基磷酸酯溶液、甲基丙烯酸水溶液以及L-抗坏血酸和巯基乙酸的混合水溶液,滴加结束后搅拌至室温,调节pH为7得到所述石墨烯改性减水剂;
在石墨烯改性减水剂的制备过程中,所述壳聚糖、乙酸、烯丙基缩水甘油醚的重量比为1:1:0.5;羧基化氧化石墨烯、物料A的重量比为1:10;物料B、对氨基苯磺酸钠的重量比为1:3;物料C、异丁烯醇聚氧乙烯醚、过硫酸铵、双氧水、2-甲基丙烯酰氧基乙基磷酸酯、甲基丙烯酸、L-抗坏血酸、巯基乙酸的重量比为6:95:0.5:1.1:5:5:0.9:0.2。
实施例3
本发明提出的一种水泥窑窑口专用浇注料,其原料按重量份包括:莫来石56份、碳化硅9份、钛铝酸钙7份、电熔刚玉11份、铝酸盐水泥3.7份、氧化铝微粉2份、硅微粉5份、氮化硅粉8份、钛酸锶粉3份、硅线石粉9份、碳酸锆粉6份、不锈钢纤维0.03份、石墨烯改性减水剂0.11份;
其中,所述莫来石为5-3mm莫来石、3-1mm莫来石、1-0.088mm莫来石、<0.088mm莫来石按重量比为21:7:5:8的混合物;
所述碳化硅为1-0.088mm碳化硅和<0.088mm碳化硅按重量比为1:4的混合物;
所述钛铝酸钙为3-1mm钛铝酸钙、<1mm钛铝酸钙按重量比为6:17的混合物;
所述刚玉为3-1mm刚玉、1-0.5mm刚玉、<0.5mm刚玉按重量比为9:5:2的混合物;
所述氧化铝微粉的粒度为3-8μm;所述硅微粉的粒度≤2μm;
所述氮化硅粉为粒径<0.088mm的氮化硅粉;
所述钛酸锶粉、硅线石粉、碳酸锆粉的粒度均为300目;
所述石墨烯改性减水剂的制备工艺包括以下步骤:将壳聚糖与乙酸水溶液混合,在室温下搅拌3h,调节pH为3,加入烯丙基缩水甘油醚,在52℃下搅拌反应18h,加入无水乙醇沉淀,过滤、洗涤、干燥得到物料A;将羧基化氧化石墨烯和物料A超声分散在MES缓冲溶液中,然后加入1-(3-二甲基氨基丙基)-3-乙基碳二亚胺和N-羟基丁二酰亚胺,振荡反应3.5h后离心、水洗、得到物料B;将物料B、对氨基苯磺酸钠、异丙醇、蒸馏水混合均匀,球磨30h后离心、洗涤、干燥得到物料C;将物料C与去离子水混合,超声分散,加入异丁烯醇聚氧乙烯醚水溶液,再加入过硫酸铵与双氧水搅拌均匀,加热至65℃,在氮气的保护下滴加2-甲基丙烯酰氧基乙基磷酸酯溶液、甲基丙烯酸水溶液以及L-抗坏血酸和巯基乙酸的混合水溶液,滴加结束后搅拌至室温,调节pH为6得到所述石墨烯改性减水剂;
在石墨烯改性减水剂的制备过程中,所述壳聚糖、乙酸、烯丙基缩水甘油醚的重量比为1:1:0.35;羧基化氧化石墨烯、物料A的重量比为3:7;物料B、对氨基苯磺酸钠的重量比为1:5;物料C、异丁烯醇聚氧乙烯醚、过硫酸铵、双氧水、2-甲基丙烯酰氧基乙基磷酸酯、甲基丙烯酸、L-抗坏血酸、巯基乙酸的重量比为3:91:1.2:1:3:7:0.6:0.5。
实施例4
本发明提出的一种水泥窑窑口专用浇注料,其原料按重量份包括:莫来石55份、碳化硅12份、钛铝酸钙11份、电熔刚玉9份、铝酸盐水泥3份、氧化铝微粉4份、硅微粉3份、氮化硅粉7份、钛酸锶粉3份、硅线石粉9.6份、碳酸锆粉8.4份、不锈钢纤维0.03份、石墨烯改性减水剂0.12份;
其中,所述莫来石为5-3mm莫来石、3-1mm莫来石、1-0.088mm莫来石、<0.088mm莫来石按重量比为19:7:6:9的混合物;
所述碳化硅为1-0.088mm碳化硅和<0.088mm碳化硅按重量比为1:3的混合物;
所述钛铝酸钙为3-1mm钛铝酸钙、<1mm钛铝酸钙按重量比为5:19的混合物;
所述刚玉为3-1mm刚玉、1-0.5mm刚玉、<0.5mm刚玉按重量比为9:7:1的混合物;
所述氧化铝微粉的粒度为3-8μm;所述硅微粉的粒度≤2μm;
所述氮化硅粉为粒径<0.088mm的氮化硅粉;
所述钛酸锶粉、硅线石粉、碳酸锆粉的粒度均为350目;
所述石墨烯改性减水剂的制备工艺包括以下步骤:将壳聚糖与乙酸水溶液混合,在室温下搅拌3h,调节pH为3,加入烯丙基缩水甘油醚,在50℃下搅拌反应21h,加入无水乙醇沉淀,过滤、洗涤、干燥得到物料A;将羧基化氧化石墨烯和物料A超声分散在MES缓冲溶液中,然后加入1-(3-二甲基氨基丙基)-3-乙基碳二亚胺和N-羟基丁二酰亚胺,振荡反应3h后离心、水洗、得到物料B;将物料B、对氨基苯磺酸钠、异丙醇、蒸馏水混合均匀,球磨25h后离心、洗涤、干燥得到物料C;将物料C与去离子水混合,超声分散,加入异丁烯醇聚氧乙烯醚水溶液,再加入过硫酸铵与双氧水搅拌均匀,加热至70℃,在氮气的保护下滴加2-甲基丙烯酰氧基乙基磷酸酯溶液、甲基丙烯酸水溶液以及L-抗坏血酸和巯基乙酸的混合水溶液,滴加结束后搅拌至室温,调节pH为7得到所述石墨烯改性减水剂;
在石墨烯改性减水剂的制备过程中,所述壳聚糖、乙酸、烯丙基缩水甘油醚的重量比为1:1:0.38;羧基化氧化石墨烯、物料A的重量比为3:7;物料B、对氨基苯磺酸钠的重量比为1:3;物料C、异丁烯醇聚氧乙烯醚、过硫酸铵、双氧水、2-甲基丙烯酰氧基乙基磷酸酯、甲基丙烯酸、L-抗坏血酸、巯基乙酸的重量比为4:87:0.9:1:4:7:0.6:0.5。
对比例1
与实施例4的唯一不同仅在于,其原料中不含有莫来石。
对比例2
与实施例4的唯一不同仅在于,其原料中不含有碳化硅、钛铝酸钙和电熔刚玉。
对比例3
与实施例4的唯一不同仅在于,其原料中不含有硅线石粉。
对比例4
与实施例4的唯一不同仅在于,其原料中不含有碳酸锆粉。
对比例5
与实施例4的唯一不同仅在于,所述石墨烯改性减水剂的制备工艺中,不包括将物料B进行对氨基苯磺酸钠改性制备物料C的过程,即将物料B代替物料C直接与去离子水混合后进行后续反应。
对比例6
与实施例4的唯一不同仅在于,所述石墨烯改性减水剂的制备工艺中,未加入2-甲基丙烯酰氧基乙基磷酸酯。
对本发明实施例1-4以及对比例1-6的浇注料进行性能检测:
体积密度参照GB/T2997-2000检测;
常温抗折强度参照GB/T3001-2007检测;
常温耐压强度参照GB/T5072-2008检测;
热震稳定性按照以下方法测试:将试样分别经1200℃×3h烧成和1500℃×3h埋炭烧成后放入1100℃的实验炉内,保温二十分钟后,在流水中浸没一分钟,然后取出在空气中放置5分钟,如此循环三次,待试样烘干后检测热震实验后试样的常温抗折强度,计算试样的抗折强度保持率;
抗碱性能参照GB/T10696-1989检测;
实施例1-4浇注料的体积密度:110℃×24h≥3.1g/cm3;常温耐压强度:110℃×24h≥107MPa,1200℃×3h≥139MPa,1500℃×3h≥147MPa;常温抗折强度:110℃×24h≥16MPa,1200℃×3h≥24MPa,1500℃×3h≥21MPa;加热永久线变化:1100℃×3h:±0.05%,1400℃×3h:±0.15%;热震后抗折强度保持率≥89%;抗碱性为一级。
而实施例4浇注料的体积密度:110℃×24h=3.35g/cm3;常温耐压强度:110℃×24h为109MPa,1200℃×3h为139MPa,1500℃×3h为148MPa;常温抗折强度:110℃×24h为18.5MPa,1200℃×3h为25.3MPa,1500℃×3h为22.6MPa;加热永久线变化:1100℃×3h:0.05%,1400℃×3h:0.15%;热震后抗折强度保持率为91%;抗碱性为一级。
对比例1-6浇注料的体积密度:110℃×24h为2.73-3.2g/cm3;常温耐压强度:110℃×24h为88-101MPa,1200℃×3h为107-125MPa,1500℃×3h为115-142MPa;常温抗折强度:110℃×24h为9-15.1MPa,1200℃×3h为10-19MPa,1500℃×3h为14-19.7MPa;加热永久线变化:1100℃×3h:±0.2%,1400℃×3h:±0.45%;热震后抗折强度保持率为75-87%;抗碱性为一级至三级。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (8)
1.一种水泥窑窑口专用浇注料,其特征在于,其原料按重量份包括:莫来石43-58份、碳化硅6-14份、钛铝酸钙5-13份、刚玉8-15份、水泥1.8-3.7份、氧化铝微粉2-5份、硅微粉2-5份、氮化硅粉5-12份、钛酸锶粉1-5份、硅线石粉+碳酸锆粉13-21份、外加纤维0.01-0.05份、石墨烯改性减水剂0.05-0.18份;
其中,所述莫来石为5-3mm莫来石、3-1mm莫来石、1-0.088mm莫来石、<0.088mm莫来石按重量比为15-30:5-12:2-7:5-12的混合物;
所述碳化硅为1-0.088mm碳化硅和<0.088mm碳化硅按重量比为1-3:2-4的混合物;
所述钛铝酸钙为3-1mm钛铝酸钙、<1mm钛铝酸钙按重量比为5-8:16-23的混合物;
所述刚玉为3-1mm刚玉、1-0.5mm刚玉、<0.5mm刚玉按重量比为7-13:3-8:1-3的混合物;
所述石墨烯改性减水剂的制备工艺包括以下步骤:将壳聚糖与乙酸水溶液混合,在室温下搅拌3-5h,调节pH为2.5-3,加入烯丙基缩水甘油醚,在48-55℃下搅拌反应15-22h,加入无水乙醇沉淀,过滤、洗涤、干燥得到物料A;将羧基化氧化石墨烯和物料A超声分散在MES缓冲溶液中,然后加入1-(3-二甲基氨基丙基)-3-乙基碳二亚胺和N-羟基丁二酰亚胺,振荡反应3-5h后离心、水洗、得到物料B;将物料B、对氨基苯磺酸钠、异丙醇、蒸馏水混合均匀,球磨20-30h后离心、洗涤、干燥得到物料C;将物料C与去离子水混合,超声分散,加入异丁烯醇聚氧乙烯醚水溶液,再加入过硫酸铵与双氧水搅拌均匀,加热至65-75℃,在氮气的保护下滴加2-甲基丙烯酰氧基乙基磷酸酯溶液、甲基丙烯酸水溶液以及L-抗坏血酸和巯基乙酸的混合水溶液,滴加结束后搅拌至室温,调节pH为6-7得到所述石墨烯改性减水剂。
2.根据权利要求1所述水泥窑窑口专用浇注料,其特征在于,所述刚玉为电熔刚玉;所述水泥为铝酸盐水泥。
3.根据权利要求1或2所述水泥窑窑口专用浇注料,其特征在于,所述氧化铝微粉的粒度为3-8μm;所述硅微粉的粒度≤2μm。
4.根据权利要求1-3中任一项所述水泥窑窑口专用浇注料,其特征在于,所述氮化硅粉为粒径<0.088mm的氮化硅粉。
5.根据权利要求1-4中任一项所述水泥窑窑口专用浇注料,其特征在于,所述钛酸锶粉、硅线石粉、碳酸锆粉的粒度均为300-350目。
6.根据权利要求1-5中任一项所述水泥窑窑口专用浇注料,其特征在于,所述硅线石粉、碳酸锆粉的重量比为3-10:2-7。
7.根据权利要求1-6中任一项所述水泥窑窑口专用浇注料,其特征在于,所述外加纤维为聚乳酸纤维、氧化锆纤维、不锈钢纤维、聚丙烯纤维中的一种或者多种的混合物。
8.根据权利要求1所述水泥窑窑口专用浇注料,其特征在于,在石墨烯改性减水剂的制备过程中,所述壳聚糖、乙酸、烯丙基缩水甘油醚的重量比为1:1:0.3-0.5;羧基化氧化石墨烯、物料A的重量比为1-5:6-10;物料B、对氨基苯磺酸钠的重量比为1:2-5;物料C、异丁烯醇聚氧乙烯醚、过硫酸铵、双氧水、2-甲基丙烯酰氧基乙基磷酸酯、甲基丙烯酸、L-抗坏血酸、巯基乙酸的重量比为3-6:80-95:0.5-1.2:1-1.2:3-5:5-11:0.5-0.9:0.2-0.6。
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