Preparation and performance of a chelating anionic foaming agent

2022 ◽  
pp. 1-9
Author(s):  
Junliang Li ◽  
Cunchuan Zheng
Keyword(s):  
Foaming Agent ◽  
And Performance

scholarly journals Formulation and performance test of palm-based foaming agent concentrate for fire extinguisher application

2018 ◽  
Vol 141 ◽  
pp. 012026 ◽  
Author(s):  
M Rivai ◽  
E Hambali ◽  
A Suryani ◽  
R Fitria ◽  
S Firmansyah ◽  
...  
Keyword(s):  
Performance Test ◽  
Fire Extinguisher ◽  
Foaming Agent ◽  
And Performance

Preparation and Performance Testing of Foamed Concrete

2013 ◽  
Vol 743-744 ◽  
pp. 166-170
Author(s):  
Ting Song Yang ◽  
Ling Chao Lu ◽  
Shou De Wang ◽  
Chen Chen Gong
Keyword(s):  
Compressive Strength ◽  
Mixing Time ◽  
Performance Testing ◽  
Dry Density ◽  
Preparation Technology ◽  
Foaming Agent ◽  
Cement Ratio ◽  
Water Cement Ratio ◽  
Foamed Concrete ◽  
And Performance

The key influences of foamed concrete and the optimum preparation technology were studied. The performance of foamed concrete was analyzed by the compressive strength testing, SEM. Results show that the flowability of cement paste is good when water-cement ratio is 0.4. The amount of foam added in sulphoaluminate cement is not able to exceed 3.5L/kg. However, the dilution multiple of foaming agent is near concentration and the mixing time depends on the foam quantity. When the water-cement ratio is 0.4, the foam quantity is 3 L/kg and the foaming agent is diluted 30 times. When the mixing time is 60s, the dry density is around 380kg/m3 and the 7d compressive strength reaches to 0.9MPa.

Experimental Study of Foaming Agent Screening and Performance Evaluation of Nitrogen Foam Flooding in Daqing Oilfield

2012 ◽  
Vol 550-553 ◽  
pp. 2873-2877 ◽  
Author(s):  
Jin Sheng Zhao ◽  
Rong Huan Chen ◽  
Zi Qiang Xu
Keyword(s):  
Foam Stability ◽  
Foaming Properties ◽  
Liquid Viscosity ◽  
Foaming Agent ◽  
Nitrogen Foam ◽  
Optimal Value ◽  
And Performance ◽  
The Stability ◽  
Foam Flooding ◽  
The Impact

Through the laboratory experiment, the foaming properties of six kinds of foaming agent was evaluated comprehensively. Through the primary selection, foaming agent concentration selection and salt tolerance evaluation, HY-2 foaming agent was selected in follow-up experiments. The Liquid viscosity effect for foaming performance showed that there exists an optimal value of the liquid viscosity, corresponding to the concentration of foam stabilizing agent should not be less than 700mg/l. The impact of temperature on the performance of foaming agent was mainly on the foam stability, the higher the temperature, the stability of the bubble the worse. Due to the presence of crude oil, foaming volume and stability of the foam appeared a downward trend, the character of which is very advantageous to adjust fluidity difference between the layers of high permeable formation and low permeable formation.

Preparation and Performance Investigation of Phenolic Foam

2011 ◽  
Vol 415-417 ◽  
pp. 1508-1511
Author(s):  
Li Yan Wang ◽  
Guang Qing Gai ◽  
Huan Yang Yu ◽  
Wen Long Liu
Keyword(s):  
Oxygen Index ◽  
Raw Materials ◽  
Curing Temperature ◽  
Curing Agent ◽  
Technological Parameters ◽  
Excellent Performance ◽  
Acid Complex ◽  
Foaming Agent ◽  
Phenolic Foam ◽  
And Performance

A phenolic foam(PF) with excellent performance was prepared with the raw materials containing of non-fluorine complex foaming agent,organic and inorganic acid complex curing agent, surfactant twain-80 and self-regulating phenolic resin.The effects of curing temperature,curing agent, foaming agent on curing time,apparent density,compression strength,thermal conductivity and oxygen index of PF were investigated.The optimal technological parameters were obtained.This has important guiding significance for preparation and modification research of PF

scholarly journals Preparation and Properties of Split Microfiber Synthetic Leather

2018 ◽  
Vol 13 (2) ◽  
pp. 155892501801300
Author(s):  
Baobao Zhao ◽  
Yao Qian ◽  
Xiaoming Qian ◽  
Jintu Fan ◽  
Fan Liu ◽  
...  
Keyword(s):  
Waterborne Polyurethane ◽  
Structure And Properties ◽  
Foaming Agent ◽  
Elongation At Break ◽  
Synthetic Leather ◽  
Peeling Strength ◽  
Coating Method ◽  
Forming Temperature ◽  
And Performance ◽  
Recovery Angle

A split microfiber synthetic leather using split microfiber nonwoven as the base and waterborne polyurethane (WPU) coating as the polymer coating was prepared by a dry transfer-coating method. First, the nylon/polyester (N/P) split microfiber nonwoven was manufactured, and the structure and properties were investigated. FESEM analysis indicated fiber diameter size was between 2.2~5.5 μm, and performance attaributes met the demands of textiles-nonwovens for synthetic leather. Then the effect of coating-forming temperature, foaming agent concentration and foaming ratio on the structure and performance of WPU coatings were systematically studied. Finally, the structure and properties of the split microfiber synthetic leather were analyzed. The results showed that the split microfiber synthetic leather arranged in a three-layer configuration, and its air permeability, tensile strength, elongation at break, tear strength, peeling strength and creasy recovery angle were better than knitted synthetic leather and real leather.

Optimization and Performance Evaluation of an Environmentally Friendly Fluorine-Free Foam Extinguishing Agent

2020 ◽  
Vol 15 (7) ◽  
pp. 884-893
Author(s):  
Guoqing Xiao ◽  
Lei Lei ◽  
Chunyan Chen ◽  
Yuanyuan Li ◽  
Wenquan Hu
Keyword(s):  
Surface Tension ◽  
Mass Fraction ◽  
Regression Models ◽  
Environmentally Friendly ◽  
Expansion Ratio ◽  
Foaming Agent ◽  
Silicone Surfactant ◽  
Drainage Time ◽  
Fire Extinguishing ◽  
And Performance

Fluorine-free foam fire extinguishing agents are environmentally friendly compared with aqueous film-forming foam fire extinguishing agents (AFFF). Design-Expert 11.0 software and the Box-Behnken design principle were used to optimize the foaming agent formulation which is the core of fluorine-free foam extinguishing agents and regression models of the expansion ratio (α), 50% drainage time (t50%) and surface tension (γ) were established. Furthermore, the optimal combination of foaming agent various factors (the mass fraction of APG0810, silicone surfactant, SDS and BS-12) were predicted by the regression models. The prediction results showed that when the mass fraction of APG0810, silicone surfactant, SDS and BS-12 were 2.0%, 0.242%, 0.116% and 0.349%, respectively, the comprehensive foaming agent performance was highest. The α, t50% and γ of the optimized foaming agent were 8.0, 376 s, and 24.1 mN/m, respectively. The fluorinefree foam fire extinguishing agent was prepared by compounding the optimized foaming agent with foam stabilizers and other additives, resulting in a surface tension of 24.3 mN/m and a spreading factor greater than zero. The, α, t50% and sealing time of the fluorine-free foam fire extinguishing agent were 7.6, 541 s, and 895 s, respectively, which were 8.6%, 16.1%, and 14% higher than commercial 6% AFFF.

scholarly journals Preparation, morphology, FTIR and performance properties of foaming particleboard

2021 ◽  
Vol 67 (1) ◽  
Author(s):  
Xiaoyu Bi ◽  
Runzhou Huang
Keyword(s):  
Phenol Formaldehyde ◽  
Critical Role ◽  
Particle Surface ◽  
Chemical Properties ◽  
Phenol Formaldehyde Resin ◽  
Solid Content ◽  
Formaldehyde Resin ◽  
Foaming Agent ◽  
Resin Solid ◽  
And Performance

AbstractThe application of light weight particleboard in furniture industry becomes more inevitable because of the requirement to facilitate transportation and assembly by the customer. Herein, a novel method for the fabrication of foaming particleboard was proposed, which is achieved by adding azodicarbonamide (AC) foaming agent into the formulation that consist of oven-dry poplar (Populus alba) particles (with the moisture content about 4%) and phenol formaldehyde resin (PF resin) (solid content of 48%). In this study, the effects of AC foaming agent and adhesive contents incorporation and its content on mechanical, physical and chemical properties of particleboards were investigated. The results showed that the addition of AC foaming agent played a critical role in properties of particleboard and the optimal particleboard performance was achieved at the particleboard density of 0.6 g/cm3, the PF resin amount of 12%, and the AC foaming agent amount of 1%. Furthermore, the pores appeared on the particle surface were the products of the radical pyrolysis of the foaming agent, which has been proved by the FTIR results and the pores also affect the properties of the particleboards.

Transmission Scanning Electron Microscopy and Energy Analysis with the Siemens ELMISKOP 101

1972 ◽  
Vol 30 ◽  
pp. 450-451
Author(s):  
H. M. Thieringer
Keyword(s):  
Objective Lens ◽  
Transmission Microscopy ◽  
Image Recording ◽  
Mode Of Operation ◽  
Scanning Transmission ◽  
Electron Microscopes ◽  
And Performance ◽  
Convergent Beam ◽  
Ray Path ◽  
Beam Diffraction

It has repeatedly been show that with conventional electron microscopes very fine electron probes can be produced, therefore allowing various micro-techniques such as micro recording, X-ray microanalysis and convergent beam diffraction. In this paper the function and performance of an SIEMENS ELMISKOP 101 used as a scanning transmission microscope (STEM) is described. This mode of operation has some advantages over the conventional transmission microscopy (CTEM) especially for the observation of thick specimen, in spite of somewhat longer image recording times.Fig.1 shows schematically the ray path and the additional electronics of an ELMISKOP 101 working as a STEM. With a point-cathode, and using condensor I and the objective lens as a demagnifying system, an electron probe with a half-width ob about 25 Å and a typical current of 5.10-11 amp at 100 kV can be obtained in the back focal plane of the objective lens.

Angular Resolved Electron Spectroscopy with Parallel Recording

1990 ◽  
Vol 48 (2) ◽  
pp. 370-371
Author(s):  
Huang Min ◽  
P.S. Flora ◽  
C.J. Harland ◽  
J.A. Venables
Keyword(s):  
Electron Spectroscopy ◽  
Low Voltage ◽  
Solid Angle ◽  
Detection System ◽  
Voltage Electron ◽  
Cylindrical Mirror ◽  
Inner Radius ◽  
Channel Plate ◽  
And Performance ◽  
Type Detector

A cylindrical mirror analyser (CMA) has been built with a parallel recording detection system. It is being used for angular resolved electron spectroscopy (ARES) within a SEM. The CMA has been optimised for imaging applications; the inner cylinder contains a magnetically focused and scanned, 30kV, SEM electron-optical column. The CMA has a large inner radius (50.8mm) and a large collection solid angle (Ω > 1sterad). An energy resolution (ΔE/E) of 1-2% has been achieved. The design and performance of the combination SEM/CMA instrument has been described previously and the CMA and detector system has been used for low voltage electron spectroscopy. Here we discuss the use of the CMA for ARES and present some preliminary results.The CMA has been designed for an axis-to-ring focus and uses an annular type detector. This detector consists of a channel-plate/YAG/mirror assembly which is optically coupled to either a photomultiplier for spectroscopy or a TV camera for parallel detection.

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