Influence of structural feature of aluminum coatings on mechanical and water barrier properties of metallized PET films

Garnier, Géraldine; Yrieix, Bernard; Bréchet, Y.; Flandin, Lionel

doi:10.1002/app.31372

Cited by 15 publications

(9 citation statements)

References 19 publications

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“…1b). Despite being only the limit for our detection technique, this value is already nearly two orders of magnitude lower than water transparency for the industry-standard barrier films (aluminized PET) 30 . Note that the HI-RGO membranes were impermeable under both liquid and vapour conditions, with the former studied by using the same container but turned upside down so that liquid water was in direct contact with the membranes (See methods).…”

Section: Resultsmentioning

confidence: 92%

Impermeable barrier films and protective coatings based on reduced graphene oxide

et al. 2014

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Flexible barrier films preventing permeation of gases and moistures are important for many industries ranging from food to medical and from chemical to electronic. From this perspective, graphene has recently attracted particular interest because its defect-free monolayers are impermeable to all atoms and molecules. However, it has been proved to be challenging to develop large-area defectless graphene films suitable for industrial use. Here we report barrier properties of multilayer graphitic films made by gentle chemical reduction of graphene oxide laminates with hydroiodic and ascorbic acids. They are found to be highly impermeable to all gases, liquids and aggressive chemicals including, for example, hydrofluoric acid. The exceptional barrier properties are attributed to a high degree of graphitization of the laminates and little structural damage during reduction. This work indicates a close prospect of graphene-based flexible and inert barriers and protective coatings, which can be of interest for numerous applications.

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Section: Resultsmentioning

confidence: 92%

Impermeable barrier films and protective coatings based on reduced graphene oxide

et al. 2014

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“…A separate study outlines that the most important element in VIP long term performance is the barrier of water and gas (Garnier et al, 2010). In this analysis, electrical resistivity was used to determine the thickness of the aluminum coating materials as a component affecting vapour permeability.…”

Section: Moisture Permeability and Water Contentmentioning

confidence: 99%

“…the top of the point is the corresponding aluminum thickness for polymer-metal films. (Garnier et al, 2010) This analysis also identifies the effect of pinholes in the film on the overall permeance of the panels. The permeance increased linearly with the increased percentage of pinholes in the metallic foil.…”

Section: Moisture Permeability and Water Contentmentioning

confidence: 99%

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Determining the Aging Performance of Vacuum Insulation Panels: Development of a Prediction Model

Morlidge¹

2021

Preprint

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Vacuum insulation panels (VIPs) are increasingly being explored in building applications. Typically used in industrial processes such as aerospace engineering, cryogenics and refrigerator manufacturing, VIPs have been proven to provide a higher thermal resistance per inch than typical building insulation materials. However, there is speculation on the performance of these panels over an extended period of time due to various factors which gradually cause a reduction in thermal resistance. The purpose of this research project is to identify these variables and how they alter VIP performance over the product’s service life. Based on a thorough literature review, the critical components were interpreted to develop a numerical model which can predict the future performance of VIPs as they age, based on initial material properties. This model is intended to benefit designers and researchers in the construction industry; in understanding the potential for vacuum insulation to contribute to building envelope design. The results of calculation proved to be complementary to experimental results provided by the NRC, (initial calculated conductivities ranged from 4.17x10 The highest calculated conductivity was attributed to the low quality metalized (MF) VIP with a final conductivity after accelerated aging of 5.29 x 10 Some observations included that there is little difference between aluminum and metallic foils in their initial conductivity; however the aluminum foils represented in this report outperformed the chosen metallic foils over time, as they provided smaller gas and water vapour transmission rates. The core material variables with the greatest impact on performance were density and porosity. Some of the simulated panels exceeded the conductivity limit before the end of their service life, while others did not. Therefore the conclusion for VIP performance overall cannot be confirmed, although the development of standards within the industry would ensure high quality material integration within building systems.

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“…In order to meet the gas barrier performance of PET food packaging film, a large number of modifications of PET film's surface have been carried out in 4 recent years. The main methods to improve the properties of PET films are multi-layer composite modification, coating modification, blending modification, surface evaporation modification and nano-composite [5][6][7][8] modification and so on, among which coating modification is the most time-saving and inexpensive method, and it can improve the gas 9,10 barrier.…”

Section: Introductionmentioning

confidence: 99%

Excellent Gas Barrier Properties PET Film Modified by Silicone Resin/Sericite Nanocomposite Coatings

Chen¹,

Ding²,

Jiang³

et al. 2019

ES Mater.Manuf.

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In order to improve the gas barrier properties of PET films, the intercalated sericite was used as a barrier material in the functional silicone resin coatings. Firstly, the functional silicone resin with excellent thermal properties and high crosslinking degree was prepared. Secondly, lamellar sericite was intercalated and characterized by SEM and XRD. It was found that the lamellar spacing changed to 1.053 nm, and the compatibility in silicone resin was improved. Finally, the water vapor permeability (WVTR) and the oxygen permeability (OTR) of the 2 modified PET film were tested. The results showed that WVTR and OTR of the modified PET film reached 12.40 g/(m •24 h) and 29.91 3 2 cm /(m •24 h•0.1 MPa) respectively, which indicated that the silicone resin modified by intercalated sericite successfully prevents the direct penetration of gas molecules, thus forming a "loop" when gas enters, prolonging its permeation path and effectively realizing high gas barrier performance. Research Paper ES Materials & Manufacturing Sericite was obtained from Chuzhou Yonghe Sericite Co., Ltd(Anhui China), γ-glycidyl-ether-oxypropyl-trimethoxysilane (KH560), γmethacryloxypropyl trimethoxysilane (KH570), trimethylolpropanetriacrylate (TMPTA) were purchased from Qufu Chengguang Chemical Co., Ltd(Shandong China). N-dimethylaminoethyl-methacrylate (DMAEMA) was procured from Shanghai Tengquan Biotechnology Co., Ltd. 2-ethylBase-4-methylimidazoxane was supplied by Sarn Flower Technology Co., Ltd. Benzophenone was purchased from Beijing Brillingway Technology Co., Ltd. Cetyltrimethylammonium bromide (CTAB) and NaCl were procured from Shanghai Chemical Reagent Co., Ltd. Dense HNO and ethanol were obtained from Xilong 3 Chemical Co., Ltd. Polyether amine D230, hexanediol diacrylate (HDDA), sodium hydroxide were all got from Aladdin reagent Co., Ltd. All the reagents were used as received. Publisher's Note Engineered Science Publisher remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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Influence of structural feature of aluminum coatings on mechanical and water barrier properties of metallized PET films

Cited by 15 publications

References 19 publications

Impermeable barrier films and protective coatings based on reduced graphene oxide

Impermeable barrier films and protective coatings based on reduced graphene oxide

Determining the Aging Performance of Vacuum Insulation Panels: Development of a Prediction Model

Excellent Gas Barrier Properties PET Film Modified by Silicone Resin/Sericite Nanocomposite Coatings

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