Study on geometrical patterns of textured fixed-abrasive pads in sapphire lapping based on trajectory analysis

Fang, Congfu; Liu, Chong; Zhao, Zaixing; Lin, Yanfen; Huang, Zhongwei; Xu, Xipeng

doi:10.1016/j.precisioneng.2018.03.008

Cited by 37 publications

(19 citation statements)

References 17 publications

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“…Moreover, these chemical processes unavoidably introduce hazardous substances and have been strictly prohibited in some countries. [ 40,41 ] As we cannot cause one environmental problem while solving another, finding a green and sustainable process for waste blended fiber separation will benefit the sustainable development of the fashion industry and reduce pollution, such as that by ubiquitous plastic particles. Hence, ionic liquids (ILs) were chosen to be the solvent for textile wastes separation in this research, which are closely associated with the green chemistry movement because of their low volatility, nonderivatization, and renewability.…”

Section: Introductionmentioning

confidence: 99%

Textile Waste Fiber Regeneration via a Green Chemistry Approach: A Molecular Strategy for Sustainable Fashion

Sun

et al. 2021

Advanced Materials

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Fast fashion, as a continuously growing part of the textile industry, is widely criticized for its excessive resource use and high generation of textiles. To reduce its environmental impacts, numerous efforts are focused on finding sustainable and eco‐friendly approaches to textile recycling. However, waste textiles and fibers are still mainly disposed of in landfills or by incineration after their service life and thereby pollute the natural environment, as there is still no effective strategy to separate natural fibers from chemical fibers. Herein, a green chemistry strategy is developed for the separation and regeneration of waste textiles at the molecular level. Cellulose/wool keratin composite fibers and multicomponent fibers are regenerated from waste textiles via a green chemical process. The strategy attempts to reduce the large amount of waste textiles generated by the fast‐developing fashion industry and provide a new source of fibers, which can also address the fossil fuel reserve shortages caused by chemical fiber industries and global food shortages caused by natural fiber production.

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Section: Introductionmentioning

confidence: 99%

Textile Waste Fiber Regeneration via a Green Chemistry Approach: A Molecular Strategy for Sustainable Fashion

Sun

et al. 2021

Advanced Materials

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“…With the development of human society, the demand for cellulose as a green and renewable resource will increase day by day, and the utilization of cellulose will continue to become the focus of scientic research. 4 Cellulose inside plants, the main component of plant cell walls, can't be used directly because it is surrounded by hemicelluloses and lignin, closely bound together by covalent bonds, hydrogen bonds and van der Waals forces, which make it difficult to separate. 5 Cellulose can be extracted effectively only when the three substances are effectively separated.…”

Section: Introductionmentioning

confidence: 99%

Extraction cellulose from corn-stalk taking advantage of pretreatment technology with immobilized enzyme

Lou

Zhou

et al. 2022

RSC Adv.

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“…In the single-sided lapping process, material is removed as abrasive particles in a slurry pass over and scratch the surface of the wafer during the relative rotational motion of the wafer and platen while pressure is applied to the wafer [8,9]. The lapping process is the last process that determines the thickness and thickness variation of a wafer.…”

Section: Introductionmentioning

confidence: 99%

Material Removal Model for Lapping Process Based on Spiral Groove Density

et al. 2021

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The increasing demand for single-crystal wafers combined with the increase in diameter of semiconductor wafers has warranted further improvements in thickness variation and material removal rate during lapping to ensure price competitiveness of wafers; consequently, the lapping process has gained the attention of researchers. However, there is insufficient research on the effect of platen grooves on the lapping process. In this study, the parameters to describe grooves were defined in order to understand their influence on the lapping process, and a material removal model was suggested based on indentation theory and subsequently experimentally validated. The results indicate that changes in groove density affect the lubrication condition at the contact interface as well as the probability of abrasive participation by varying the oil film thickness. When fabricating the groove for a lapping platen, a groove density at the critical groove density (CGD) or higher should be selected. The higher the groove density, the easier it is to avoid the CGD, and the higher is the material removal rate. The results of this study will enable engineers to design lapping platen grooves that are suitable for the production of modern semiconductor wafers.

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Study on geometrical patterns of textured fixed-abrasive pads in sapphire lapping based on trajectory analysis

Cited by 37 publications

References 17 publications

Textile Waste Fiber Regeneration via a Green Chemistry Approach: A Molecular Strategy for Sustainable Fashion

Textile Waste Fiber Regeneration via a Green Chemistry Approach: A Molecular Strategy for Sustainable Fashion

Extraction cellulose from corn-stalk taking advantage of pretreatment technology with immobilized enzyme

Material Removal Model for Lapping Process Based on Spiral Groove Density

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