A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydroxypropyl methyl cellulose for improving cracking resistance of mortar as well as preparation method and application of hydroxypropyl methyl cellulose
The invention relates to hydroxypropyl methyl cellulose capable of improving cracking resistance of mortar as well as a preparation method and application thereof, on one hand, the preparation method of the hydroxypropyl methyl cellulose capable of improving the cracking resistance of the mortar is provided, and the hydroxypropyl methyl cellulose is prepared through crushing pretreatment, alkalization, etherification, crosslinking, solvent recovery and aftertreatment. On the other hand, the prepared hydroxypropyl methyl cellulose is applied to mortar, cement, yellow sand, fly ash and glass beads are stirred and mixed to be uniform, then the hydroxypropyl methyl cellulose, a surfactant, anti-crack fibers, a mildew preventive and a polycarboxylic acid high-performance water reducing agent are added into the mixture and mixed to be uniform, water is added, stirring is conducted again, and the mortar is prepared. The hydroxypropyl methyl cellulose is high in gas content and appropriate in viscosity, the binding power, the water retention rate and the cracking resistance of the mortar can be effectively improved, the problem of damp cracking caused by bacteria and mildewing is further avoided by combining the hydroxypropyl methyl cellulose with the mildew preventive, and the mortar can be used for a long time in southern humid areas.
本发明涉及一种提高砂浆抗开裂性的羟丙基甲基纤维素及制备方法与应用，一方面是提供一种提高砂浆抗开裂性的羟丙基甲基纤维素的制备方法，通过粉碎预处理、碱化、醚化、交联、溶剂回收和后处理制备得到羟丙基甲基纤维素。另一方面，将制备得到的羟丙基甲基纤维素在砂浆中应用，将水泥、黄砂、粉煤灰和玻化微珠搅拌混合均匀，再将羟丙基甲基纤维素、表面活性剂、抗裂纤维、防霉剂和聚羧酸系高性能减水剂加入其中并混合均匀，加入水再搅拌即制得砂浆。本发明的羟丙基甲基纤维素含气量高、粘度适宜，能够有效提高砂浆的粘结力、保水率、抗开裂性能，结合防霉剂，进一步避免因细菌、发霉而导致的受潮开裂问题，使其可在南方易潮湿地区长期使用。
Hydroxypropyl methyl cellulose for improving cracking resistance of mortar as well as preparation method and application of hydroxypropyl methyl cellulose
The invention relates to hydroxypropyl methyl cellulose capable of improving cracking resistance of mortar as well as a preparation method and application thereof, on one hand, the preparation method of the hydroxypropyl methyl cellulose capable of improving the cracking resistance of the mortar is provided, and the hydroxypropyl methyl cellulose is prepared through crushing pretreatment, alkalization, etherification, crosslinking, solvent recovery and aftertreatment. On the other hand, the prepared hydroxypropyl methyl cellulose is applied to mortar, cement, yellow sand, fly ash and glass beads are stirred and mixed to be uniform, then the hydroxypropyl methyl cellulose, a surfactant, anti-crack fibers, a mildew preventive and a polycarboxylic acid high-performance water reducing agent are added into the mixture and mixed to be uniform, water is added, stirring is conducted again, and the mortar is prepared. The hydroxypropyl methyl cellulose is high in gas content and appropriate in viscosity, the binding power, the water retention rate and the cracking resistance of the mortar can be effectively improved, the problem of damp cracking caused by bacteria and mildewing is further avoided by combining the hydroxypropyl methyl cellulose with the mildew preventive, and the mortar can be used for a long time in southern humid areas.
本发明涉及一种提高砂浆抗开裂性的羟丙基甲基纤维素及制备方法与应用，一方面是提供一种提高砂浆抗开裂性的羟丙基甲基纤维素的制备方法，通过粉碎预处理、碱化、醚化、交联、溶剂回收和后处理制备得到羟丙基甲基纤维素。另一方面，将制备得到的羟丙基甲基纤维素在砂浆中应用，将水泥、黄砂、粉煤灰和玻化微珠搅拌混合均匀，再将羟丙基甲基纤维素、表面活性剂、抗裂纤维、防霉剂和聚羧酸系高性能减水剂加入其中并混合均匀，加入水再搅拌即制得砂浆。本发明的羟丙基甲基纤维素含气量高、粘度适宜，能够有效提高砂浆的粘结力、保水率、抗开裂性能，结合防霉剂，进一步避免因细菌、发霉而导致的受潮开裂问题，使其可在南方易潮湿地区长期使用。
Hydroxypropyl methyl cellulose for improving cracking resistance of mortar as well as preparation method and application of hydroxypropyl methyl cellulose
一种提高砂浆抗开裂性的羟丙基甲基纤维素及制备方法与应用
YANG TAO (author) / CHO JIN-IK (author) / LIU YU (author) / WANG XUEMEI (author) / JIANG LILI (author)
2024-05-14
Patent
Electronic Resource
Chinese
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