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A platform for research: civil engineering, architecture and urbanism
Gypsum powder admixture and microwave radiation preparation method
The invention provides a gypsum powder admixture. The admixture does not contain residual chlorine, sodium and potassium ions, does not influence the initial and final setting time of gypsum and has obvious plasticizing and water reducing functions. 0.3%-0.5% of the water reducing agent is added into the gypsum product so that the water can be reduced by 15%-25% and the compression strength, breaking strength and water resistance of the gypsum product are obviously improved. The powder admixture is prepared by taking maleic anhydride, melamine and polyformaldehyde as raw materials and carryingout microwave irradiation reaction in a microwave reaction container by a two-step method. The preparation process of the admixture is free of solvent, waste water and waste residue discharge, and asmall amount of waste gas is sealed in the microwave reaction container to be centrally treated. The production process meets the current environmental protection requirements.
一种石膏粉体外加剂，该外加剂不含残余氯、钠、钾离子，不影响石膏初、终凝时间，具有明显塑化、减水功能。在石膏制品中添加0.3%到0.5%能够减水15%‑25%明显提升石膏制品抗压、抗折强度及耐水性。该粉体外加剂是以马来酸酐、三聚氰胺、聚甲醛为原料在微波反应胆中以两步法经微波照射反应制备。该外加剂制备过程无溶剂、无废水、废渣排放，少量废气密闭在微波反应胆中被集中处理。生产过程复合当前环保要求。
Gypsum powder admixture and microwave radiation preparation method
The invention provides a gypsum powder admixture. The admixture does not contain residual chlorine, sodium and potassium ions, does not influence the initial and final setting time of gypsum and has obvious plasticizing and water reducing functions. 0.3%-0.5% of the water reducing agent is added into the gypsum product so that the water can be reduced by 15%-25% and the compression strength, breaking strength and water resistance of the gypsum product are obviously improved. The powder admixture is prepared by taking maleic anhydride, melamine and polyformaldehyde as raw materials and carryingout microwave irradiation reaction in a microwave reaction container by a two-step method. The preparation process of the admixture is free of solvent, waste water and waste residue discharge, and asmall amount of waste gas is sealed in the microwave reaction container to be centrally treated. The production process meets the current environmental protection requirements.
一种石膏粉体外加剂，该外加剂不含残余氯、钠、钾离子，不影响石膏初、终凝时间，具有明显塑化、减水功能。在石膏制品中添加0.3%到0.5%能够减水15%‑25%明显提升石膏制品抗压、抗折强度及耐水性。该粉体外加剂是以马来酸酐、三聚氰胺、聚甲醛为原料在微波反应胆中以两步法经微波照射反应制备。该外加剂制备过程无溶剂、无废水、废渣排放，少量废气密闭在微波反应胆中被集中处理。生产过程复合当前环保要求。
Gypsum powder admixture and microwave radiation preparation method
一种石膏粉体外加剂及微波辐射制备方法
GONG XIAOPING (author) / LIU HAISHUN (author) / OUYANG CHUAN (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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