Research on the Preparation of the Low Density Material with High Volume Filling Rate of Phenolic Hollow Microsphere

2013 ◽  
Vol 561 ◽  
pp. 135-140
Author(s):  
Xue Tao He ◽  
Jian Bo Shao ◽  
Ying An ◽  
Kun Ma ◽  
Jian Qiang Wang ◽  
...  
Keyword(s):  
Production Process ◽  
Industrial Production ◽  
Mixing Time ◽  
Hollow Microsphere ◽  
High Volume ◽  
Filling Ratio ◽  
Low Density ◽  
Filling Rate ◽  
Volume Filling ◽  
Mixing Effect

In this paper, an experimental mixing equipment has been developed for producing low density material with a high volume filling rate of phenolic hollow microsphere. The experiments with the equipment aim to explore the feasibility of this equipment for industrial production and to optimize the process. Experiments have been made to evaluate the influence of the filling ratio and the mixing rotor movement on the mixing effect. The results show that when the volume filling ratio of the material to the mixing barrel is about 40% the mixing effect is the best. But with mixing time increasing, the broken ratio of hollow microsphere will increase too. To solve this problem, some changes on the rotor movement have been made. The results show that the broken ratio increasing rate becomes lower and the density becomes more uniform. These indicate that the broken ratio can be well controlled by a suitable production process.

Experimental Study on Impact of Production Process Parameters on Rubber Asphalt Performance

2012 ◽  
Vol 204-208 ◽  
pp. 3629-3633 ◽  
Author(s):  
Wei Hou
Keyword(s):  
Production Process ◽  
High Speed ◽  
Mixing Time ◽  
Rubber Powder ◽  
The Road ◽  
Molding Method ◽  
Production Temperature ◽  
Mixing Method ◽  
Asphalt Performance ◽  
Powder Content

In order to better master the production process and the road performance of rubber asphalt, the paper studied the influence law of mixing method, mixing temperature, mixing time and rubber powder content on the performance of rubber asphalt. The results show that all the indexes except the viscosity of rubber asphalt has little change with different mixing methods, and the rubber asphalt has the best performance under the high-speed stirring molding method but the worst performance under the high-speed shearing molding method. Meanwhile, the performance of rubber asphalt change visibly with different mixing temperatures, on which the excessively high or low production temperature has negative significance, so the optimal production temperature would be recommended as 180~200°C. Furthermore, the mixing time and the rubber powder content are the two critical factors which may greatly affect the performance of rubber asphalt, followed by the mixing temperature and the mixing method.

scholarly journals High-volume, ultra-low-density fly ash foamed concrete

2017 ◽  
Vol 69 (22) ◽  
pp. 1146-1156 ◽  
Author(s):  
M. Roderick Jones ◽  
Kezban Ozlutas ◽  
Li Zheng
Keyword(s):  
Fly Ash ◽  
High Volume ◽  
Low Density ◽  
Foamed Concrete

Effects of digitalization of industrial small and medium-sized enterprises in Industry 4.0

2021 ◽  
Vol 19 (11) ◽  
pp. 2086-2106
Author(s):  
Elena S. MEZENTSEVA
Keyword(s):  
Production Process ◽  
Statistical Methods ◽  
Industrial Production ◽  
Industry 4.0 ◽  
The State ◽  
New Markets ◽  
Comparative Analyses ◽  
Industrial Enterprises ◽  
Theoretical Generalization ◽  
Special Studies

Subject. This article discusses the issues related to the industrial production process re-engineering in a fundamental way in the conditions of Industry 4.0. Objectives. The article aims to identify the current areas of digitalization and the specifics of the implementation of Industry 4.0 achievements at small and medium-sized industrial enterprises (SMEs). Methods. For the study, I applied the methods of theoretical generalization, systems, logical, structural, and comparative analyses, and statistical methods. Results. The article highlights the advantages and limitations associated with the introduction of Industry 4.0 technologies in small and medium-sized industrial enterprises and identifies constraints and prospects for entering new markets. Based on the analysis of indices, the article assesses the state of preparedness and willingness of small and medium-sized enterprises in Russia for digitalization. Conclusions. It is necessary to conduct special studies on various aspects of the implementation of Industry 4.0 technologies at small and medium-sized enterprises.

Thermal Properties of Linear-Low Density Polyethylene (LLDPE)/Soya Spent Powder Blends with the Addition of Epoxidised Natural Rubber

2013 ◽  
Vol 795 ◽  
pp. 433-437 ◽  
Author(s):  
S.T. Sam ◽  
N.Z. Noriman ◽  
S. Ragunathan ◽  
O.H. Lin ◽  
H. Ismail
Keyword(s):  
Thermal Properties ◽  
Natural Rubber ◽  
Mixing Time ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Scanning Calorimetry ◽  
Powder Composites ◽  
Powder Content ◽  
Internal Mixer

Soya spent powder as an inexpensive and renewable source has been used as a filler for linear-low density polyethylene (LLDPE) in this study. Linear-low density polyethylene (LLDPE)/soya spent powder composites were prepared by using Haake internal mixer. The mixing time was 10 minutes at 150°C with rotor speed 50 rpm. Epoxidised natural rubber (ENR 50) has been used as a compatibilizer in the present study. The thermal properties of the LLDPE/soya spent powder composites with and without ENR were studied with a differential scanning calorimetry (DSC). The crystallinity of the LLDPE/soya spent powder composites decreased with increasing soya spent powder content. However, the addition of ENR 50 as a compatibilizer increased the crystallinity of the LLDPE/soya spent powder composites.

Experimental Investigation of Heat Transfer of Refrigerant Fluid Pulsating Heat Pipe

2017 ◽  
Vol 865 ◽  
pp. 137-142
Author(s):  
Somchai Maneewan ◽  
Chantana Punlek ◽  
Hoy Yen Chan ◽  
Atthakorn Thongtha
Keyword(s):  
Heat Transfer ◽  
Thermal Resistance ◽  
Heat Pipe ◽  
Temperature Difference ◽  
Heat Input ◽  
Filling Ratio ◽  
Working Fluid ◽  
Pulsating Heat Pipe ◽  
Filling Volume ◽  
Volume Filling

Heat transfer performances of a pulsating heat pipe (PHP) having internal and external diameter with 4.5 mm and 6 mm with various contents of refrigerant are experimentally investigated. The working fluid as R404A refrigerant was filled in the volume ratios from 0% to 80% and the heat input was controlled in the range from 10 W to 80 W. Obtained results exhibited the ability of R404A refrigerant can enhance the thermal performance in steady state condition. The average temperature difference of the evaporating section and condensing section in the 80% filling volume ratio decreased from 9.5 °C to 2.5 °C when the heating power increase from 10 W to 80 W. The thermal resistance of evaporator and condenser decreased with an increase of the heat input as well. For other filling volume ratios, the trend of temperature difference and thermal resistance was similar to that of the 80% volume filling ratio. Considering the same heat input, the highest heat transfer performance was found at the 80% volume filling ratio. Refrigerant with a relatively low dynamic consistency can lead to relatively high velocity in the PHP that can reduce the temperature difference between the evaporating section and condensing section.

scholarly journals Friele Model of Rotor Spun Multi-Primary-Colour-Blended Yarn

2019 ◽  
Vol 27 (5(137)) ◽  
pp. 50-59
Author(s):  
Ruihua Yang ◽  
Yaya Xu ◽  
Ruiye Han
Keyword(s):  
Industrial Production ◽  
Model Parameters ◽  
Mixing Effect ◽  
Model Parameter ◽  
Rotor Spinning ◽  
Blended Yarn ◽  
Two Component ◽  
Spinning Process ◽  
Production Flexibility ◽  
High Production

Multi-channel rotor spinning equipment can produce multi-colour mixed yarn by changing the feed speeds of three primary coloured slivers separately. The method realises the mixing of colour fibres during the spinning process, and has the characteristics of high production flexibility, simplicity and quickness. The colour mixing effect and colour blending ratio prediction are important conditions for industrial production. In this paper, two-component and three-component samples were spun with rovings of red, yellow and blue with different blending ratios. A colour model of the rotor spun multi-primary-colour-blended yarn was established based on Friele theory by determining the σ value, which is the model parameter determined by experiments. Two methods were employed to calculate the σ value to improve the accuracy of the model:1. under the condition of all wavelengths and 2. at various wavelengths. The results showed that the model parameters calculated at various wavelengths could better predict the colour of multi-channel rotor spun colour-blended yarn.

scholarly journals Topographical and Physical Assessment for Cage Aquaculture Suitability Survey in Inland

2020 ◽  
pp. 10-19
Author(s):  
A. M. Danjuma ◽  
H. A. Aliyu ◽  
R. S. Umar ◽  
K. Abubakar
Keyword(s):  
Random Sampling ◽  
Lake Victoria ◽  
High Volume ◽  
High Density ◽  
Low Density ◽  
Experiment Research ◽  
Systematic Random Sampling ◽  
Sampling Points ◽  
Cage Aquaculture ◽  
Low Volume

This research was aimed to assess the suitability of Kijjude and Kala bays on Lake Victoria in Kalangala District for cage aquaculture. This study used a quasi-experiment research design. General environmental and physical data were collected and used to assess suitability of Kijjude and Kala bays for suitability for cage aquaculture by comparing the various measured parameters with the acceptable standards for cage aquaculture. Data were taken from a total of 14 and 6 points within Kijjude and Kala bays respectively. Systematic random sampling was used to determine the above mentioned sampling points. Kala bay was found to be suitable for both High Volume Low Density (HVLD) and Low Volume High Density (LVHD) cage. All sampled points within Kijjude bay were found to be only suitable for Low Volume High Density (LVHD) cage aquaculture except site KA whose depth was found to be less than 4.0 (m).

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