Effects of sodium lignosulfonate and silane coupling agent additions on the microstructures and properties of aluminum silicate fiber-based ceramic filter elements for high-temperature filtration

2021 ◽  
Vol 41 (1) ◽  
pp. 856-863
Author(s):  
Linfeng Miao ◽  
Xiaolin Wu ◽  
Zhongli Ji ◽  
Zhen Zhao
Keyword(s):  
High Temperature ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Ceramic Filter ◽  
Aluminum Silicate ◽  
Sodium Lignosulfonate ◽  
Silane Coupling

Fundamental Study on Adhesion of Epoxy Underfill Materials with Passivation Layer in Flip-chip Packaging

2001 ◽  
Vol 682 ◽  
Author(s):  
Shijian Luo ◽  
C. P. Wong
Keyword(s):  
High Temperature ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Flip Chip ◽  
Polymer Chains ◽  
Passivation Layer ◽  
High Humidity ◽  
Fundamental Study ◽  
Silane Coupling ◽  
Flip Chip Packaging

ABSTRACTThe influence of aging in an environment with a high temperature and a high humidity on the adhesion performance of underfill material (epoxy cured with acid anhydride) to the passivation layer in flip chip packaging is discussed. Adhesion of underfill to different passivation materials degrades after aging in a high temperature and high humidity environment. The extent of this degradation is dependent on the hydrophilicity of the passivation material. Hydrophilic passivation such as silicon oxide (SiO2) and silicon nitride (Si3N4) shows much more severe adhesion degradation than hydrophobic passivation such as benzocyclobutene (BCB) and polyimide (PI). The mobility of absorbed water and of polymer chains is studied with solid state nuclear magnetic resonance (NMR) spectroscopy. Higher mobility of absorbed water and of polymer chains in rubbery state polymers contributes to faster adhesion degradation during high temperature and high humidity aging. The adhesion stability of hydrophilic passivation can be successfully improved by use of a silane coupling agent that introduces stable chemical bond at interface. A flow micro-calorimeter was used to study the absorption of silane coupling agent onto glass surface. The difference in adhesion retention improvement between aminosilane and epoxysilane is discussed.

Effect of Surface Modified Foamed Fe Powder on Tribological Properties of Semi-Metallic Friction Material

2013 ◽  
Vol 668 ◽  
pp. 75-79
Author(s):  
Yang Cao ◽  
Yuan Kang Zhou ◽  
Jian Yu Wei ◽  
Tao Yue Yang ◽  
Hua Wei Nie
Keyword(s):  
High Temperature ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Tribological Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Hydrophobic Surface ◽  
Friction Material ◽  
Fe Powder ◽  
Silane Coupling

The silane coupling agent KH550 is used to modify foamed Fe powder(FFP) surface for obtain the hydrophobic surface, which is the very important component in semi-metallic friction material. It can improve high temperature bonding force between FFP and phenolic resin, further improve friction coefficient stableness of friction material and abrasion resistance. The modification effect of FFP is characterized by IR, and the tribological properties is characterized by XD-MSM constant speed friction test machine, the surface topography is characterized by SEM. The results indicate that FFP has been bonded to silane coupling agent, and formed hydrophobic surface what has the alkyl group. The changing of friction coefficient has reduced 23%, the average wear rate has declined 28.6%,and the wear rate has declined 32% at 350 °C after the friction material with modified FFP compare with the one with original FFP. And those changing are all because of the fact that the FFP modified by KH550 is difficult to peel off during the high temperature.

Study on the Anti-Oxidant Property of Copper Powder Coated Silane Coupling Agent in Isotropically Conductive Adhesives

2010 ◽  
Vol 139-141 ◽  
pp. 117-120 ◽  
Author(s):  
Jian Hua Zhong ◽  
Zhi Hong Li ◽  
Ling Yu Ouyang
Keyword(s):  
High Temperature ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Thermo Gravimetric Analysis ◽  
Accelerated Aging ◽  
Gravimetric Analysis ◽  
Conductive Adhesives ◽  
Copper Powders ◽  
Silane Coupling ◽  
Anti Oxidant

In this experiment, the micro copper powders with high temperature of oxidation resistance were prepared by coating with 2 wt.% of silane coupling agent(KH560) solution in order to protect them from oxidation in isotropically conductive adhesives, and X-ray diffraction analysis(XRD), thermo gravimetric analysis(TGA) and accelerated aging test were applied to analyze the anti-oxidant property of the samples before and after they were treated. Experimental results showed that the polymer of silane coupling agent on the surfaces of copper powders had high thermal stability exposed under high temperature and was very effective in preventing the copper powders from oxidation in isotropically conductive adhesives. Besides, the epoxy conductive adhesive sample with plated copper as electrically conductive fillers still had good conductive property even exposed at 160 degrees with its bulk resistivity was 8.75×10-3Ω•cm.

Discussion the Effect on Improving Granite Bituminous Mixture Performance by Adding Coupling Agent

2012 ◽  
Vol 204-208 ◽  
pp. 4115-4118 ◽  
Author(s):  
Ai Qin Zhang ◽  
Yan Min Wang ◽  
Chuan Yi Zhuang
Keyword(s):  
High Temperature ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Asphalt Mixture ◽  
Water Stability ◽  
Bituminous Mixture ◽  
Rutting Resistance ◽  
Silane Coupling

In this paper, improved adhesion of between asphalt and granite and the performance of high temperature and water stability of granite asphalt mixture by the coupling agent were discussed. The results show that the titanate coupling agent and silane coupling agent doped in asphalt can significantly improve the rutting resistance and water stability of the granite asphalt mixture.

scholarly journals Improved Hydrophobicity of Macroalgae Biopolymer Film Incorporated with Kenaf Derived CNF Using Silane Coupling Agent

Molecules ◽  
2021 ◽  
Vol 26 (8) ◽  
pp. 2254
Author(s):  
Adeleke A. Oyekanmi ◽  
N. I. Saharudin ◽  
Che Mohamad Hazwan ◽  
Abdul Khalil H. P. S. ◽  
Niyi G. Olaiya ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Cellulose Nanofibrils ◽  
Hydroxyl Groups ◽  
Water Contact ◽  
Silane Coupling ◽  
Cnf Films ◽  
Kenaf Bast ◽  
Thermal Stability Of

Hydrophilic behaviour of carrageenan macroalgae biopolymer, due to hydroxyl groups, has limited its applications, especially for packaging. In this study, macroalgae were reinforced with cellulose nanofibrils (CNFs) isolated from kenaf bast fibres. The macroalgae CNF film was after that treated with silane for hydrophobicity enhancement. The wettability and functional properties of unmodified macroalgae CNF films were compared with silane-modified macroalgae CNF films. Characterisation of the unmodified and modified biopolymers films was investigated. The atomic force microscope (AFM), SEM morphology, tensile properties, water contact angle, and thermal behaviour of the biofilms showed that the incorporation of Kenaf bast CNF remarkably increased the strength, moisture resistance, and thermal stability of the macroalgae biopolymer films. Moreover, the films’ modification using a silane coupling agent further enhanced the strength and thermal stability of the films apart from improved water-resistance of the biopolymer films compared to unmodified films. The morphology and AFM showed good interfacial interaction of the components of the biopolymer films. The modified biopolymer films exhibited significantly improved hydrophobic properties compared to the unmodified films due to the enhanced dispersion resulting from the silane treatment. The improved biopolymer films can potentially be utilised as packaging materials.

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