A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Oil well cement expanding agent and preparation method thereof
The invention relates to the technical field of cement expanding agents, in particular to an oil well cement expanding agent and a preparation method thereof.The prepared polymer microsphere expanding component has a good spherical form, can be filled in gaps of cement particles to improve the cement density and prevent cement shrinkage, can block microcracks after absorbing water and expanding, and has a good application prospect. Calcined magnesium oxide is subjected to surface modification through octadecanoic unsaturated fatty acid, the expansion time of cement paste can be effectively delayed, the final expansion rate of magnesium oxide is increased to a certain extent, and similarly, expansion of ettringite can be delayed through coating of octadecanoic unsaturated fatty acid, so that the final expansion rate of ettringite is increased; the polypropylene fibers and the basalt fibers are subjected to surface modification through the silane coupling agent KH560, the dispersity of the polypropylene fibers and the basalt fibers can be improved, and the compressive strength of cement paste mixed with the expanding agent can be improved by adding the silane coupling agent KH560 into the expanding agent.
本发明涉及水泥膨胀剂技术领域，具体涉及一种油井水泥膨胀剂及其制备方法，本发明制备的聚合物微球膨胀组分具有较好的球形形态，能够填充在水泥颗粒缝隙中来提高水泥密度，防止水泥收缩，吸水膨胀后还能够对微裂缝进行堵塞，通过十八碳不饱和脂肪酸对煅烧后的氧化镁进行表面改性，能够有效地延缓水泥浆体的膨胀时间，在一定程度上增加氧化镁的最终膨胀率，同理经过十八碳不饱和脂肪酸包覆也能够延缓钙矾石的膨胀，从而增加钙矾石的最终膨胀率；通过硅烷偶联剂KH560对聚丙烯纤维和玄武岩纤维进行表面改性，能够提高聚丙烯纤维和玄武岩纤维的分散性，将其加入中膨胀剂中能够提高混有该膨胀剂水泥浆体的抗压强度。
Oil well cement expanding agent and preparation method thereof
The invention relates to the technical field of cement expanding agents, in particular to an oil well cement expanding agent and a preparation method thereof.The prepared polymer microsphere expanding component has a good spherical form, can be filled in gaps of cement particles to improve the cement density and prevent cement shrinkage, can block microcracks after absorbing water and expanding, and has a good application prospect. Calcined magnesium oxide is subjected to surface modification through octadecanoic unsaturated fatty acid, the expansion time of cement paste can be effectively delayed, the final expansion rate of magnesium oxide is increased to a certain extent, and similarly, expansion of ettringite can be delayed through coating of octadecanoic unsaturated fatty acid, so that the final expansion rate of ettringite is increased; the polypropylene fibers and the basalt fibers are subjected to surface modification through the silane coupling agent KH560, the dispersity of the polypropylene fibers and the basalt fibers can be improved, and the compressive strength of cement paste mixed with the expanding agent can be improved by adding the silane coupling agent KH560 into the expanding agent.
本发明涉及水泥膨胀剂技术领域，具体涉及一种油井水泥膨胀剂及其制备方法，本发明制备的聚合物微球膨胀组分具有较好的球形形态，能够填充在水泥颗粒缝隙中来提高水泥密度，防止水泥收缩，吸水膨胀后还能够对微裂缝进行堵塞，通过十八碳不饱和脂肪酸对煅烧后的氧化镁进行表面改性，能够有效地延缓水泥浆体的膨胀时间，在一定程度上增加氧化镁的最终膨胀率，同理经过十八碳不饱和脂肪酸包覆也能够延缓钙矾石的膨胀，从而增加钙矾石的最终膨胀率；通过硅烷偶联剂KH560对聚丙烯纤维和玄武岩纤维进行表面改性，能够提高聚丙烯纤维和玄武岩纤维的分散性，将其加入中膨胀剂中能够提高混有该膨胀剂水泥浆体的抗压强度。
Oil well cement expanding agent and preparation method thereof
一种油井水泥膨胀剂及其制备方法
DAI QING (author) / LI JIANZHONG (author) / YU XIN (author) / LAI DAYU (author) / ZHANG WEI (author) / YANG GUOLIANG (author) / CHEN ZHICHAO (author) / LIANG YUANBIN (author) / TIAN FABIN (author) / ZHANG TIANJIAN (author)
2024-01-26
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
C03C
Chemische Zusammensetzungen für Gläser, Glasuren oder Emails
,
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
/
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
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
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