High‐temperature resistant copolymer oil well cement retarder: Synthesis, assessment of performance, and mechanism of retardation
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Applied Polymer Science"
DOI: 10.1002/app.55316
Abstract: This work used aqueous solution free radical polymerization to create polymers of 2‐acrylamide‐2‐methylpropane sulfonic acid, itaconic acid, and allyl polyoxyethylene ether as a high‐temperature resistant retarder (APMS/IA/APEG, from now on referred to as AIA). Gel… read more here.
Keywords: mechanism; retarder; temperature resistant; high temperature ... See more keywords
The application of a combination of treated AMPS/IA copolymer and borax as the retarder of calcium aluminate phosphate cement
Sign Up to like & getrecommendations! Published in 2017 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2017.03.071
Abstract: Abstract The research objectives in this paper are designed to develop one new type of retarder for calcium aluminate phosphate cement (CAPC) to extend the thickening time. Results show that due to the influence of… read more here.
Keywords: retarder calcium; retarder; amps copolymer; treated amps ... See more keywords
Development of a concrete set retarder utilizing electric arc furnace dust
Sign Up to like & getrecommendations! Published in 2020 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2020.119378
Abstract: Abstract Retarding admixtures are used to increase the setting time of concrete, especially under hot weather conditions. They provide longer time for concrete to be transported, placed and consolidated. Several commercial retarders are used to… read more here.
Keywords: set retarder; time; time concrete; setting time ... See more keywords
Occurrence Mechanism of the Abnormal Gelation Phenomenon of High Temperature Cementing Slurry Induced by a Polycarboxylic Retarder
Sign Up to like & getrecommendations! Published in 2024 at "ACS Omega"
DOI: 10.1021/acsomega.3c08885
Abstract: The class G oil well cement is a type of special cement that can be subjected to a high temperature formation environment. It was found that the class G cement tail slurry with a low… read more here.
Keywords: high temperature; abnormal gelation; retarder; slurry ... See more keywords
Synthesis and retarder mechanism study of a novel amphoteric composite high temperature-resistant retarder for oil well cement
Sign Up to like & getrecommendations! Published in 2018 at "RSC Advances"
DOI: 10.1039/c8ra01139g
Abstract: An amphoteric composite polymer (hereinafter referred to as PAADM) as a high temperature-resistant cement retarder was prepared by in situ intercalated polymerization method with 2-crylamido-2-methylpropanesulfonic acid (AMPS), acrylic acid (AA) and two diallyl dimethyl ammonium… read more here.
Keywords: temperature; high temperature; cement; amphoteric composite ... See more keywords
The effect of hydrophobic chains on retarding performance of retarding acids
Sign Up to like & getrecommendations! Published in 2022 at "RSC Advances"
DOI: 10.1039/d2ra00552b
Abstract: Acidizing retarders are used to reduce the reaction rate between hydrochloric acid (HCl) and carbonates to increase the efficiency of acidification of oil and gas wells and increase oil and gas recovery. We synthesized two… read more here.
Keywords: retarding performance; apeg 1000; hydrophobic chains; retarder ... See more keywords
Dyeing of polyacrylonitrile knitted fabric using liposomes
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Liposome Research"
DOI: 10.1080/08982104.2024.2396107
Abstract: Abstract In this study, it was aimed to analyze the effects of liposomes on the dyeing of polyacrylonitrile fabrics. For this purpose, firstly liposome synthesis was carried out, and then liposome production was confirmed by… read more here.
Keywords: liposomes dyeing; polyacrylonitrile fabrics; polyacrylonitrile knitted; retarder ... See more keywords
Research on Temperature and Braking Performance of Water-Cooled Eddy Current Retarder
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Access"
DOI: 10.1109/access.2021.3058243
Abstract: Trucks have the problems of frequent braking and long-term braking during long-slope transportation. As the temperature of the traditional eddy current retarder is as high as 500 °C during braking, the braking torque of the… read more here.
Keywords: water cooled; field; eddy current; temperature ... See more keywords
Design and Performance Analysis of a Novel Liquid-Cooled Electromagnetic Retarder
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DOI: 10.1109/access.2024.3458797
Abstract: In order to solve the problems of serious deterioration of braking efficiency of traditional eddy current retarder (ECR) in continuous operation and poor braking characteristics of hydraulic retarder (HR) at low speed, a novel four… read more here.
Keywords: braking characteristics; electromagnetic retarder; retarder; cooled electromagnetic ... See more keywords
Study on Braking Characteristics of a Novel Eddy Current-Hydraulic Hybrid Retarder for Heavy-Duty Vehicles
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Energy Conversion"
DOI: 10.1109/tec.2020.2978304
Abstract: Heavy-duty vehicles are generally equipped with non-contact hydraulic retarders or eddy current retarders to ensure safe driving during downhill conditions. The torque of the hydraulic retarder is large when the rotor rotates at a high… read more here.
Keywords: speed; eddy current; heavy duty; duty vehicles ... See more keywords
Design of a superachromatic quarter-wave retarder for near-infrared region using flower pollination algorithm
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.9.095101
Abstract: Abstract. Phase retarders normally exhibit strong wavelength dependence. However, for use with polychromatic light, achromatic retarders, which exhibit ideally nearly identical characteristics over a wide wavelength region, are in demand. Designing such a superachromatic retarder… read more here.
Keywords: pollination algorithm; region; near infrared; quarter wave ... See more keywords