A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method and application of organic phosphonic acid polymer retarder
The invention discloses a preparation method and application of an organic phosphonic acid polymer retarder, and the preparation method comprises the following steps: adding 2-acrylamide-2-methylpropanesulfonic acid, N, N-dimethylacrylamide, itaconic acid and an allyl monomer containing phosphonyl into softened water to obtain a mixed raw material dispersion liquid A; adding a sodium hydroxide solution or a potassium hydroxide solution into the mixed raw material dispersion liquid A to obtain a mixed raw material dispersion liquid B; heating the mixed raw material dispersion liquid B, and sequentially dropwise adding an ammonium persulfate solution and a sodium hydrogen sulfite solution into the mixed raw material dispersion liquid B in a heating and stirring state; after the sodium hydrogen sulfite solution is dropwise added, a mixed reaction dispersion liquid is obtained; and continuously carrying out constant-temperature reaction on the mixed reaction dispersion liquid, adding boric acid after the reaction is finished, and uniformly stirring and mixing to prepare the long-sealing-section well cementation cement slurry. The problems that when an existing coagulant is used for well cementation of a medium-high-temperature long sealing section, the influence of the temperature difference effect on the strength of set cement cannot be completely eliminated, and the like can be solved.
本发明公开一种有机膦酸类聚合物缓凝剂的制备方法及应用，制备方法：将2‑丙烯酰胺‑2‑甲基丙磺酸、N,N‑二甲基丙烯酰胺、衣康酸和含膦酰基的烯类单体加入到软化水中，得到混合原料分散液A；向混合原料分散液A中加入氢氧化钠溶液或氢氧化钾溶液，得到混合原料分散液B；加热混合原料分散液B，并在加热搅拌状态下向混合原料分散液B中依次滴加过硫酸铵溶液和亚硫酸氢钠溶液；待亚硫酸氢钠溶液滴加完毕后，得到混合反应分散液；将混合反应分散液继续恒温反应，反应结束后加入硼酸搅拌混匀，可用于配制长封固段固井水泥浆。本发明可以解决现有混凝剂在用于中高温长封固段固井时，不能完全消除温差效应对水泥石强度影响等问题。
Preparation method and application of organic phosphonic acid polymer retarder
The invention discloses a preparation method and application of an organic phosphonic acid polymer retarder, and the preparation method comprises the following steps: adding 2-acrylamide-2-methylpropanesulfonic acid, N, N-dimethylacrylamide, itaconic acid and an allyl monomer containing phosphonyl into softened water to obtain a mixed raw material dispersion liquid A; adding a sodium hydroxide solution or a potassium hydroxide solution into the mixed raw material dispersion liquid A to obtain a mixed raw material dispersion liquid B; heating the mixed raw material dispersion liquid B, and sequentially dropwise adding an ammonium persulfate solution and a sodium hydrogen sulfite solution into the mixed raw material dispersion liquid B in a heating and stirring state; after the sodium hydrogen sulfite solution is dropwise added, a mixed reaction dispersion liquid is obtained; and continuously carrying out constant-temperature reaction on the mixed reaction dispersion liquid, adding boric acid after the reaction is finished, and uniformly stirring and mixing to prepare the long-sealing-section well cementation cement slurry. The problems that when an existing coagulant is used for well cementation of a medium-high-temperature long sealing section, the influence of the temperature difference effect on the strength of set cement cannot be completely eliminated, and the like can be solved.
本发明公开一种有机膦酸类聚合物缓凝剂的制备方法及应用，制备方法：将2‑丙烯酰胺‑2‑甲基丙磺酸、N,N‑二甲基丙烯酰胺、衣康酸和含膦酰基的烯类单体加入到软化水中，得到混合原料分散液A；向混合原料分散液A中加入氢氧化钠溶液或氢氧化钾溶液，得到混合原料分散液B；加热混合原料分散液B，并在加热搅拌状态下向混合原料分散液B中依次滴加过硫酸铵溶液和亚硫酸氢钠溶液；待亚硫酸氢钠溶液滴加完毕后，得到混合反应分散液；将混合反应分散液继续恒温反应，反应结束后加入硼酸搅拌混匀，可用于配制长封固段固井水泥浆。本发明可以解决现有混凝剂在用于中高温长封固段固井时，不能完全消除温差效应对水泥石强度影响等问题。
Preparation method and application of organic phosphonic acid polymer retarder
一种有机膦酸类聚合物缓凝剂的制备方法及应用
WANG AIMIN (author) / MU YING (author) / ZHAO JUNTAO (author) / JIANG BOYU (author) / SONG YAOMIN (author) / ZHANG FENG (author) / LI GUANGYU (author) / CUI LINJIE (author) / LI JIAHAO (author) / ZHANG BAOSHUANG (author)
2023-12-29
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
Organic acid-protein composite gypsum retarder and preparation method thereof
| European Patent Office | 2022
| European Patent Office | 2024
Retarder for recycled aggregate mortar, and preparation method of retarder
| European Patent Office | 2020
| European Patent Office | 2023