Results 1 to 10 of about 4,765 (99)

盐水介质中CPAM分散聚合的分散介质与分散剂选择研究

open access: yesGongye shui chuli, 2010
考察了CPAM分散聚合中,两种不同硫酸盐作为分散介质的可行性,并详细讨论了不同类型的分散剂对盐水介质中CPAM分散聚合的影响。通过研究发现,由于硫酸钠在水中的溶解度随温度波动较大,不适合作为CPAM分散聚合的分散介质。另外实验表明,由于非离子型分散剂在盐水介质中溶解性不佳,不适合作为CPAM分散聚合的分散剂。故选择硫酸铵与PDMDAAC分别作为盐水介质中CPAM分散聚合的分散介质与分散剂,并确定了硫酸铵最佳用量为聚合体系质量的27%~29%,PDMDAAC最佳用量为单体质量的10%~18 ...
林东海, 谭辉铁
doaj   +2 more sources

油对常用水稳剂缓蚀阻垢和分散性能的影响

open access: yesGongye shui chuli, 2006
采用电导法考察循环水中柴油对阻垢剂阻垢性能的影响,并进一步研究含油水对缓蚀剂的缓蚀能力和分散剂分散氧化铁能力的影响。结果表明,工业循环水中含有柴油对水质稳定剂的性能有很大影响,柴油使缓蚀剂、阻垢剂、分散剂的效能均降低。
刘伟   +4 more
doaj   +2 more sources

Dual‐Bioactive Lignin‐Based Microcarrier Hydrogel Platform via Metal Salt Crosslinking for Synchronized Infection Eradication and Bone Regeneration

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Infected bone defects represent a dual therapeutic challenge demanding concurrent infection inhibition and osteogenesis promotion. Systemic antibiotic administration is taken as a classical treatment protocol but often yields inadequate local antibiotic concentrations and delayed bone repair.
Xucai Wang   +8 more
wiley   +1 more source

Facile and Efficient Synthesis of Dual‐Defect NiFe Layered Double Hydroxides for Enhanced Oxygen Evolution Reaction

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT In electrocatalysis, traditional single‐atom catalysts (SACs) face challenges in achieving coordinated control of reaction pathways due to limitations such as single local energy levels and carrier recombination. By introducing an additional defect structure, it is possible to break the electronic structure symmetry, thereby activating SACs ...
Juanjuan Huo   +8 more
wiley   +1 more source

Breaking Shuttle‐Induced Kinetics Limitations in Lithium–Sulfur Batteries: Confined FeS2 Nanocatalyst With Optimized d‐Band Center

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT The commercialization of lithium‐sulfur batteries (LSBs) faces dual challenges of sluggish sulfur redox kinetics and lithium polysulfides (LiPSs) shuttling. Herein, we demonstrate a synergistic strategy combining multidimensional structural confinement with d‐band center modulation to simultaneously suppress LiPSs diffusion and catalyze ...
Shibo Rong   +8 more
wiley   +1 more source

反渗透装置添加剂的研制

open access: yesGongye shui chuli, 2001
以有机磷螯合剂、有机高分子分散剂、杀菌灭藻剂、渗透剂、脱氯剂和脱氯催化剂为基础,获得了一个反渗透系统专用复合添加剂MZ-1010。与国内目前常用的进口添加剂Argo 120、HypersperseAF 200UL等比较表明,MZ-1010的螯合性能、分散性能、杀菌灭藻性能和除氯性能均等同于或优于进口添加剂。
孟兆龙   +5 more
doaj   +2 more sources

Heterointerfaces and Sulfur Vacancies in MXene/MoS2@C for Boosted Ultra‐Broadband Electromagnetic Wave Absorption and Infrared Stealth Response

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Ti3C2Tx MXene shows significant potential in the field of electromagnetic wave absorption; however, the wave absorption performance was hindered due to the impedance mismatch, which was caused by its inherent high dielectric constant. In this work, Ti3C2Tx MXene co‐assembled with molybdenum disulfide nanosheets and carbon coating layers (MXene/
Hualong Yu   +11 more
wiley   +1 more source

膦酰基羧酸共聚物阻垢分散剂的研究进展

open access: yesGongye shui chuli, 2003
介绍了近 20年来膦酰基羧酸共聚物阻垢分散剂——大分子有机磷酸的研究现状和进展情况。重点罗列了以不饱和有机磷酸单体为原料制备膦酰基羧酸共聚物阻垢分散剂,在合成工艺和阻垢、分散及缓蚀性能评价等方面所取得的研究成果,并提出了膦酰基羧酸共聚物阻垢分散剂今后的主攻方向和发展趋势。
何焕杰
doaj   +2 more sources

Preparation of Highly Bioactive Nanolignin via Dopamine Mannich Modification and Its Synergistic Effects With Zn2+ in PVA Hydrogels

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Lignin is a natural non‐toxic polyphenolic macromolecule, which shows inherent antioxidant and broad‐spectrum antibacterial activities. However, due to the low content and the high bond dissociation energy of phenolic hydroxyl groups (Ar‐O·H), its antioxidant and antibacterial activities are relatively weak, which limits its application as a ...
Meiling Han   +10 more
wiley   +1 more source

高性能陶瓷用分散剂的研制及影响分散效果因素的探讨 附视频

open access: yesDianci bileiqi, 1999
以丙烯酸、氨水为主要原料制备了高性能陶瓷用分散剂。采用先中和后聚合工艺合成的聚丙烯酸铵分散剂, 当分散剂含量达到0.7% (质量分数) 时对ZnO体系即有很好的分散及稳定效果。另外还对影响悬浮体流变学性质的因素及分散剂的吸附分散机理进行了分析和探讨。
焦芳   +7 more
doaj  

Home - About - Disclaimer - Privacy