Xin, H.; Guo, D. The Synthesis and Performance of a Novel Lignin Modified Salt-Resistant Branched High-Performance Water Reducer. Polymers2024, 16, 204.
Xin, H.; Guo, D. The Synthesis and Performance of a Novel Lignin Modified Salt-Resistant Branched High-Performance Water Reducer. Polymers 2024, 16, 204.
Xin, H.; Guo, D. The Synthesis and Performance of a Novel Lignin Modified Salt-Resistant Branched High-Performance Water Reducer. Polymers2024, 16, 204.
Xin, H.; Guo, D. The Synthesis and Performance of a Novel Lignin Modified Salt-Resistant Branched High-Performance Water Reducer. Polymers 2024, 16, 204.
Abstract
A lignin modified salt resistance branched high-performance water reducer was prepared via free radical polymerization. The water reducing agent was identified through Fourier transform infrared analysis, thermal gravimetric analysis, and scanning electron microscopy. The experiment conducted on cement paste demonstrates that the water-reducing efficiency can reach a maximum of 44%. Additionally, the significant spatial steric hindrance of the application enhances the dispersal capability of the water-reducing agent, resulting in effective water reduction and reduced viscosity. In addition, its compressive strength is the highest after 3-day curing and 3, 7, 28-day standard curing, and it has the best overall performance both in water and saline water prepared systems.The application in oil cement slurry shows that it exhibits good dispersibility in fresh water, saline water, and substitute ocean water. In the Halfaya and Missan Oilfields of Iraq, BHPWR was used in slurry with a density of 2.28g cm-3 for casing the 244.5 mm salt paste layer of five wells. Cementing results exceeded expectations with over 85% excellent and 100% qualified.
Keywords
Water reducer; Salt resistance; Dispersant
Subject
Chemistry and Materials Science, Applied Chemistry
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
