不同添加剂对干法制粉生坯早期强度的试验研究
|
摘要
采用单掺法和复掺法分析比较了不同早强添加剂对干法制粉陶瓷生坯的早期强度的影响,并探讨其早强机理。研究结果表明,陈腐48 h后掺量为0.4wt%硅溶胶的早强效果要优于掺量为0.4wt%的CaCl_2,掺量为0.02wt%三乙醇胺的早强效果优于掺量为0.02wt%的尿素。无机早强剂的早强效果要强于有机类早强剂;复掺有机和无机早强剂的作用效果均优于单掺的早强效果;经对比,早强效果最好的是0.2wt%CaCl_2+0.3wt%硅溶胶+0.01wt%三乙醇胺的组合复掺,使干法制粉陶瓷生坯的早期强度较未掺组提高33.2%。
The effects of different early strength additives on the early strength of dry powder ceramic green body were analyzed and compared by the methods of single and compound admixtures,and the early strength mechanism was discussed. The results show that the early strength effect of silica sol with the content of 0. 4 wt% is better than that of CaCl_2 with the content of 0. 4 wt%,and that the early strength effect of triethanolamine with the content of 0. 02 wt% is better than that of urea with the content of 0. 02 wt% after the stale silica sol mixed for 48 h. The early strength effect of inorganic early strength agent is stronger than that of organic early strength agent. Both organic and inorganic early strength admixtures have better effects than the single early strength admixtures. By comparison,the combination of 0. 2 wt% CaCl_2+ 0. 3 wt% silica sol + 0. 01 wt% triethanolamine has the best early-strength effect,and the early-strength of dry powder ceramic green body is 33. 2% higher than that of the non-mixed group.
The effects of different early strength additives on the early strength of dry powder ceramic green body were analyzed and compared by the methods of single and compound admixtures,and the early strength mechanism was discussed. The results show that the early strength effect of silica sol with the content of 0. 4 wt% is better than that of CaCl_2 with the content of 0. 4 wt%,and that the early strength effect of triethanolamine with the content of 0. 02 wt% is better than that of urea with the content of 0. 02 wt% after the stale silica sol mixed for 48 h. The early strength effect of inorganic early strength agent is stronger than that of organic early strength agent. Both organic and inorganic early strength admixtures have better effects than the single early strength admixtures. By comparison,the combination of 0. 2 wt% CaCl_2+ 0. 3 wt% silica sol + 0. 01 wt% triethanolamine has the best early-strength effect,and the early-strength of dry powder ceramic green body is 33. 2% higher than that of the non-mixed group.
引文
[1]东鹏亚洲首个干法制粉工程获成功,出砖合格率达96%[J].陶瓷,2016(5):71-72.
[2]技术转让项目[J].中国陶瓷工业,2018,25(1):69.
[3]霍秀琼.新型陶瓷坯体增强剂的研制[J].陶瓷,2006(12):23-25.
[4]雷西萍.复配型早强减水剂的制备与性能研究[J].硅酸盐通报,2010,29(4):948-952.
[5]李家强.浅谈几种常用混凝土外加剂的作用机理[J].科技信息(科学教研),2008(22):87-88.
[6]康永.水玻璃的固化机理及其耐水性的提高途径[J].佛山陶瓷,2011,21(5):44-47+17.
[7]侯彩英,周艳明,罗红,等.水玻璃的固化机理及其提高耐水性途径分析[J].陶瓷,2011(8):18-21.
[8]王彬,郑强,王升平,等.改性三乙醇胺化合物的合成及其对水泥助磨性能的影响[J].硅酸盐通报,2009,28(6):1235-1240.
[9]黄剑锋,曹丽云.陶瓷坯体增强剂的应用研究[J].陶瓷,2000(4):15-17.
[10]张德佑,张俊峰.不增加粘度的新型陶瓷增强剂[J].佛山陶瓷,2016,26(10):39-42.
[11]潘蕾,孙晓然.多功能陶瓷添加剂及腐植酸钠应用[J].江苏陶瓷,2005(5):31-34+40.
[12]周健儿,马玉琦,张小珍,等.添加剂对大规格超薄陶瓷砖生坯强度的影响[J].陶瓷,2008(3):54-57.
[2]技术转让项目[J].中国陶瓷工业,2018,25(1):69.
[3]霍秀琼.新型陶瓷坯体增强剂的研制[J].陶瓷,2006(12):23-25.
[4]雷西萍.复配型早强减水剂的制备与性能研究[J].硅酸盐通报,2010,29(4):948-952.
[5]李家强.浅谈几种常用混凝土外加剂的作用机理[J].科技信息(科学教研),2008(22):87-88.
[6]康永.水玻璃的固化机理及其耐水性的提高途径[J].佛山陶瓷,2011,21(5):44-47+17.
[7]侯彩英,周艳明,罗红,等.水玻璃的固化机理及其提高耐水性途径分析[J].陶瓷,2011(8):18-21.
[8]王彬,郑强,王升平,等.改性三乙醇胺化合物的合成及其对水泥助磨性能的影响[J].硅酸盐通报,2009,28(6):1235-1240.
[9]黄剑锋,曹丽云.陶瓷坯体增强剂的应用研究[J].陶瓷,2000(4):15-17.
[10]张德佑,张俊峰.不增加粘度的新型陶瓷增强剂[J].佛山陶瓷,2016,26(10):39-42.
[11]潘蕾,孙晓然.多功能陶瓷添加剂及腐植酸钠应用[J].江苏陶瓷,2005(5):31-34+40.
[12]周健儿,马玉琦,张小珍,等.添加剂对大规格超薄陶瓷砖生坯强度的影响[J].陶瓷,2008(3):54-57.