Preparation of Waterbased Phenol-Formaldehyde Resin and its Application on Para-Aramid Paper

2014 ◽  
Vol 881-883 ◽  
pp. 858-862
Author(s):  
Yong Sheng Qin ◽  
Yuan Jian Qiao ◽  
Gui Long Xu ◽  
Yi Wang ◽  
Jian Hu
Keyword(s):  
Chemical Structure ◽  
Phenol Formaldehyde ◽  
Paper Industry ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Before And After ◽  
Promising Application ◽  
Micro Morphology ◽  
Water Dilution ◽  
Thermal Stability Of

Waterbased phenol-formaldehyde (PF) resin was prepared and applied to enhance the mechanical strength of aramid paper in this paper. The water dilution stability of prepared PF resin was studied. The chemical structure and the thermal stability of prepared PF resin were characterized. The comprehensive performances of aramid paper before and after strengthen by PF resin were tested. The Micro-morphology of aramid paper was observed by Scanning electron microscopy (SEM0. The results shows that the comprehensive performances of aramid paper were greatly enhanced after being strengthen by PF resin. Its expected that the prepared PF resin has promising application in aramid paper industry.

Study on the Reclamation Technology of Alkaline Phenol Formaldehyde Resin Bonded Sand

2012 ◽  
Vol 217-219 ◽  
pp. 914-917
Author(s):  
Qing Zhou Sun ◽  
Jian Wang ◽  
Pu Qing Zhang ◽  
Yong Han
Keyword(s):  
Tensile Strength ◽  
Service Time ◽  
Phenol Formaldehyde ◽  
Casting Process ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Process Performance ◽  
Molding Sand ◽  
Before And After

In this article we study the reclamation technology of alkaline phenol formaldehyde resin bonded sand. We find that there are a lot of evaporation components in the alkaline phenol formaldehyde resin bonded sand, and they can be effectively removed by drying or baking. The loss of ignition of the sand before and after the mechanical regeneration can be reduced by the baking of alkaline phenol formaldehyde resin bonded sand; it also can improve the stripping rate of the reclaimed sand. The acid demand value of the reclaimed sand increases with the increasing of temperature and reaches the maximum at 500°C, when the alkaline phenol formaldehyde resin bonded sand is baked below 500°C, and then the acid demand value of the regenerated sand reduces when the baking temperature increases. The tensile strength of alkaline phenol formaldehyde resin bonded sand mixed by the regenerated sand obtained by the 360°C baking and mechanical regeneration is higher than that of the sand mixed by the regenerated sand obtained by other methods in the case that the service time and the molding sand mixed by the base sand are the same, and has the best casting process performance.

Thermal Degradation and Combustion Performance Comparison of Plywood Based on Inorganic Adhesive and Phenol-Formaldehyde Resin

2017 ◽  
Vol 14 (1) ◽  
pp. 775-779
Author(s):  
Shoulu Yang ◽  
Yiqiang Wu ◽  
Ning Ji ◽  
Yan Qing ◽  
Dan Li ◽  
...  
Keyword(s):  
Phenol Formaldehyde ◽  
Thermo Gravimetric Analysis ◽  
Performance Comparison ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
Total Mass Loss ◽  
Thermal Stability Of ◽  
Made In

The main objective of this work was to study a new inorganic adhesive used for wood-based panel. Inorganic adhesive and its poplar plywood were prepared to investigate their properties. Thermo-gravimetric analysis tests revealed that the total mass loss of inorganic adhesive was 76.24%, which was higher than that of phenol-formaldehyde resin (64.97%). The results showed better thermal stability of inorganic adhesive. For inorganic adhesive plywood, approximately 30% decrease in peak of heat release rate, 62% in total smoke production and 20% in mean CO2 yield, respectively, were seen compared to the control by cone calorimeter analysis. Scanning electron microscopy imaged wider glue line of inorganic adhesives plywood, which was related to the bonding strength of plywood. Thus the inorganic adhesive of fireproofing made in lab could be better used for plywood processing.

Improvement of river water quality - the results of industrial effluent minimisation

2000 ◽  
Vol 42 (5-6) ◽  
pp. 9-14 ◽  
Author(s):  
J. Zagorc-Končan ◽  
A. Žgajnar Gotvajn
Keyword(s):  
Water Quality ◽  
Natural Waters ◽  
Phenol Formaldehyde ◽  
Industrial Effluent ◽  
Practical Method ◽  
Organic Pollution ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Before And After ◽  
The Impact

The harmful effects of wastewaters on receiving streams, caused by insufficient quality of effluents, inadequate dimensioning and overloading of present treatment plants, as well as the trends of science and technology call for improvement of the treatment technologies, development of advanced treatment processes and above all for waste minimisation in industrial processes to meet the increasing water quality standards. Microbial degradation is crucial in the prediction of the duration and, thereby, the effects of organic pollution in natural waters. Evaluating the fate of biodegradable organic pollution downstream from the discharge seems an appropriate way to follow the effect of pollution and its hazard assessment that dictates needed sanitation measures. This paper is concerned with effluent discharges and with the water receiving such discharges. A practical method for the study of the fate of biodegradable industrial pollution in receiving stream is demonstrated. The impact of wastewater from the synthetic phenol-formaldehyde resin production on Borovnišica river is presented. By comparative investigations, before and after introduction of sanitation measures, the beneficial impact of industrial effluent minimisation and treatment is shown evidently.

Purification of water contaminated with heavy metals by example of lead as promising material based on graphene nanostructures

2020 ◽  
pp. 34-43
Author(s):  
N. R. Memetov ◽  
◽  
A. V. Gerasimova ◽  
A. E. Kucherova ◽  
◽  
...  
Keyword(s):  
Adsorption Process ◽  
Phenol Formaldehyde ◽  
Phenol Formaldehyde Resin ◽  
Formaldehyde Resin ◽  
Parameter Estimates ◽  
Maximum Adsorption Capacity ◽  
Ecological Situation ◽  
Characteristic Parameters ◽  
Purification Of Water ◽  
Graphene Nanostructures

The paper evaluates the effectiveness of the use of graphene nanostructures in the purification of lead (II) ions to improve the ecological situation of water bodies. The mechanisms and characteristic parameters of the adsorption process were analyzed using empirical models of isotherms at temperatures of 298, 303, 313 and 323 K, which correspond to the following order (based on the correlation coefficient): Langmuir (0.99) > Temkin (0.97) > Dubinin – Radushkevich (0.90). The maximum adsorption capacity of the material corresponds to the range from 230 to 260 mg/g. We research the equilibrium at the level of thermodynamic parameter estimates, which indicates the spontaneity of the process, the endothermic nature and structure change of graphene modified with phenol-formaldehyde resin during the adsorption of lead (II) ions, leading to an increase in the disorder of the system.

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