Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-temperature stabilizer for high-density cement paste, and preparation method thereof
The invention discloses a high-temperature stabilizer for high-density cement paste, and a preparation method thereof. The high-temperature stabilizer comprises, by weight, 76-84 parts of bentonite, 10-14 parts of modified diutan gum and 6-10 parts of a cross-linked copolymer, wherein the modified diutan gum is obtained by graft copolymerization of diutan gum with sodium p-styrenesulfonate and 2-acrylamide-2-methylpropanesulfonic acid; and the cross-linked copolymer is a cross-linked copolymer formed by copolymerizing 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, dimethyl diallyl ammonium chloride, N-vinyl caprolactam and divinyl benzene, and the molecular weight of the cross-linked copolymer is 7-9 * 10<5>. The high-temperature stabilizer has the characteristics of high viscosityat low temperature and tackifying at high temperature, remarkably improves the high-temperature stability of cement paste, solves the problem of poor high-temperature stability of the existing cementpaste, has no adverse effect on the comprehensive performance of the cement paste, and meets the requirements of field construction; and in addition, the preparation method of the stabilizer is simple, conditions are controlled, the cost is low, and the stabilizer has market popularization and application prospects.
本发明公开了一种高密度水泥浆用高温稳定剂及其制备方法，其中高温稳定剂包括以重量份计的76～84份的膨润土、10～14重量份的改性定优胶、6～10重量份的交联共聚物；改性定优胶采用苯乙烯磺酸钠和2‑丙烯酰胺‑2‑甲基丙磺酸对定优胶进行接枝共聚得到；交联共聚物由2‑丙烯酰胺基‑2‑甲基丙磺酸、丙烯酰胺、二甲基二烯丙基氯化铵、N‑乙烯基己内酰胺和二乙烯基苯共聚而成的交联共聚物，其分子量为7×105～9×105；该高温稳定剂具有低温高粘、高温增粘的特点，显著改善水泥浆高温稳定，解决现有水泥浆高温稳定性差的问题，且对水泥浆综合性能无不良影响，满足现场施工需求；另外，该稳定剂在制备方面制备方法简单，条件以控制，成本低，具有市场推广应用前景。
High-temperature stabilizer for high-density cement paste, and preparation method thereof
The invention discloses a high-temperature stabilizer for high-density cement paste, and a preparation method thereof. The high-temperature stabilizer comprises, by weight, 76-84 parts of bentonite, 10-14 parts of modified diutan gum and 6-10 parts of a cross-linked copolymer, wherein the modified diutan gum is obtained by graft copolymerization of diutan gum with sodium p-styrenesulfonate and 2-acrylamide-2-methylpropanesulfonic acid; and the cross-linked copolymer is a cross-linked copolymer formed by copolymerizing 2-acrylamide-2-methylpropanesulfonic acid, acrylamide, dimethyl diallyl ammonium chloride, N-vinyl caprolactam and divinyl benzene, and the molecular weight of the cross-linked copolymer is 7-9 * 10<5>. The high-temperature stabilizer has the characteristics of high viscosityat low temperature and tackifying at high temperature, remarkably improves the high-temperature stability of cement paste, solves the problem of poor high-temperature stability of the existing cementpaste, has no adverse effect on the comprehensive performance of the cement paste, and meets the requirements of field construction; and in addition, the preparation method of the stabilizer is simple, conditions are controlled, the cost is low, and the stabilizer has market popularization and application prospects.
本发明公开了一种高密度水泥浆用高温稳定剂及其制备方法，其中高温稳定剂包括以重量份计的76～84份的膨润土、10～14重量份的改性定优胶、6～10重量份的交联共聚物；改性定优胶采用苯乙烯磺酸钠和2‑丙烯酰胺‑2‑甲基丙磺酸对定优胶进行接枝共聚得到；交联共聚物由2‑丙烯酰胺基‑2‑甲基丙磺酸、丙烯酰胺、二甲基二烯丙基氯化铵、N‑乙烯基己内酰胺和二乙烯基苯共聚而成的交联共聚物，其分子量为7×105～9×105；该高温稳定剂具有低温高粘、高温增粘的特点，显著改善水泥浆高温稳定，解决现有水泥浆高温稳定性差的问题，且对水泥浆综合性能无不良影响，满足现场施工需求；另外，该稳定剂在制备方面制备方法简单，条件以控制，成本低，具有市场推广应用前景。
High-temperature stabilizer for high-density cement paste, and preparation method thereof
高密度水泥浆用高温稳定剂及其制备方法
LIU WENMING (Autor:in) / WU CHAOMING (Autor:in) / QI BEN (Autor:in) / LIN ZHIHUI (Autor:in) / FU JIAWEN (Autor:in) / ZHAO SHUXUN (Autor:in) / LI XIAOLIN (Autor:in) / LING YONG (Autor:in) / CHEN XU (Autor:in) / WANG XIANGYU (Autor:in)
23.10.2020
Patent
Elektronische Ressource
Chinesisch
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