Enlarging density measurement range for polymers by horizontal magneto-Archimedes levitation

Zhang, Chengqian; Zhao, Peng; Xie, Jun; Xia, Neng; Fu, Jianzhong

doi:10.1016/j.polymertesting.2018.03.008

Cited by 34 publications

(26 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Local mechanical properties are also a vital factor in the application of micro parts, such as micro gears . Current testing methods include ultrasonic technology, dielectric sensing, magnetic levitation, and nanoindentation . For example, Zhao et al .…”

Section: Introductionmentioning

confidence: 99%

Effect of injection speed on the mechanical properties of isotactic polypropylene micro injection molded parts based on a nanoindentation test

Wang

Zhang

Jiang

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Isotactic polypropylene micro parts were molded at different injection speeds by microinjection molding. The morphology and micro structure were characterized by a polarizing microscope, and the mechanical properties of differently structured layers were characterized by nanoindentation experiments. The influence of injection speed on the nanoindentation mechanical properties of each structural layer of the micro parts was analyzed. The results showed that the mechanical properties of different layers were different, the modulus and hardness of the position near the core layer were largest, and the modulus and hardness of the position near the skin were smallest. It is compelling that the modulus and hardness of each layer decreased first and then increased as the injection speed increased under a higher melt temperature (240 °C). Meanwhile, the opposite trend was observed at a lower melt temperature (220 °C). This phenomenon can be attributed to the competitive mechanism of the shear heat effect and the disorientation effect. In addition, injection speed had a greater influence on the nanoindentation mechanical properties in the perpendicular direction than in the flow direction. This work systematically explored the relationship between the microstructure and the local mechanical properties, which can provide new insights for microinjection molding design in the future. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47329.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of injection speed on the mechanical properties of isotactic polypropylene micro injection molded parts based on a nanoindentation test

Wang

Zhang

Jiang

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…By flattening the device (cf. Figure 9(b)), the ability to measure samples with large densities was achieved [83,88,89]. Moreover, our research group employed ring magnets to MagLev [90,91] ensuring better visibility, accessibility, and operability of the samples.…”

Section: Magnetic Levitation Quality Detection Of Final Parts Is An mentioning

confidence: 98%

“…(a) Schematic view of the magnetic levitation detection device[82]. (b) Horizontal magnetic levitation for enlarging density measurement range[83]. (c) Samples and their levitation posture and position in MagLev device[82].…”

mentioning

confidence: 99%

Intelligent Injection Molding on Sensing, Optimization, and Control

Zhao

Zhang

Dong

et al. 2020

Advances in Polymer Technology

Self Cite

View full text Add to dashboard Cite

Injection molding is one of the most significant material processing methods for mass production of plastic products. It is widely used in various industry sectors, and its products are ubiquitous in our daily life. The settings and optimization of the injection molding process dictate the geometric precision and mechanical properties of the final products. Therefore, sensing, optimization, and control of the injection molding process have a crucial influence on product quality and have become an active research field with abundant literature. This paper defines the concept of intelligent injection molding as the integral application of these three procedures—sensing, optimization, and control. This paper reviews recent studies on methods for the detection of relevant physical variables, optimization of process parameters, and control strategies of machine variables in the molding process. Finally, conclusions are drawn to discuss future research directions and technologies, as well as algorithms worthy of being explored and developed.

show abstract

“…Density or specific gravity measurements are significant for industrialization of most today's products, as it's an evidence for formulation process, change in microstructure, composition [18], internal defects [19,20,21], chemical and physical changes [22,23] that's affect the quality of the final product. Weight reduction of some products is acceptable for product performance and economic savings.…”

Section: Specific Gravitymentioning

confidence: 99%

Economic polymer-based waterproofing membranes by incorporation of wastes to form eco-friendly material

2020

View full text Add to dashboard Cite

Waste recycling is a way to produce innovative low cost eco-friendly materials to solve environmental problems caused by different types of industrial by-product and polymeric wastes. Natural rubber loaded with different types of waste materials Calcium Hydroxide Ca(OH)2, Calcium Carbonate (CaCO3), Fly Ash (class F) and Waste rubber (WR) by mixing through open mill and then pressed in hot press to obtain low cost eco-friendly waterproofing membranes with desired properties. All samples pass the water penetration test up to 6 bars. The samples water absorption coefficients ranged from (0.1 to 0.3%) for all investigated samples. UV weathering and thermal aging tests were done to the samples while no changes on mechanical properties appeared before and after the tests. Dimensional stability test was done for all samples; a slight dimension change occurs. The mechanical and hardness measurements for all samples were done while good mechanical properties obtained. The price of square meter of 2 mm thickness for all samples was calculated in order to estimate its feasibility. A comparison of our samples with other waterproofing membranes from two famous Egyptian companies was done. Low cost and qualified waterproofing material can be obtained from recycling of some wastes.

show abstract

Enlarging density measurement range for polymers by horizontal magneto-Archimedes levitation

Cited by 34 publications

References 30 publications

Effect of injection speed on the mechanical properties of isotactic polypropylene micro injection molded parts based on a nanoindentation test

Effect of injection speed on the mechanical properties of isotactic polypropylene micro injection molded parts based on a nanoindentation test

Intelligent Injection Molding on Sensing, Optimization, and Control

Economic polymer-based waterproofing membranes by incorporation of wastes to form eco-friendly material

Contact Info

Product

Resources

About