The Properties and Lifetime of Polymer UV Films

Vávřová, Petra; Paulusová, Hana; Kučerová, Irena

doi:10.1515/rest.2004.233

Cited by 2 publications

(3 citation statements)

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“…A UV film's longevity is indeed finite, with the interior application of UV-protecting films on window glass usually guaranteeing a lifespan of between five and seven years. In stark contrast, the guarantee period significantly diminishes to a mere two years if the film is applied to the window's exterior [36].…”

Section: Ultraviolet B 280-315mentioning

confidence: 95%

“…Another limitation of spectrophotometer-based UV transmission measurements is the degradation of glazing materials over time. The degradation of glazing materials complicates this issue further, as the UV transmission properties of materials can vary significantly throughout their lifespan due to factors such as aging, weathering, and exposure to environmental conditions [35,36]. Spectrophotometers typically require small samples for analysis, which may not accurately represent the entire product [3,31].…”

Section: Sample Size and Uneven Glazing Materials Degradation Over Timementioning

confidence: 99%

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Ultraviolet Radiation Transmission in Buildings’ Fenestration: Part I, Detection Methods and Approaches Using Spectrophotometer and Radiometer

Onatayo

Srinivasan

Shah³

2023

Buildings

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Fenestration, comprising windows and other openings in a building, influences occupant health and well-being while also enhancing energy efficiency through optimized design and placement. Selecting glazing materials that block or filter harmful UV radiation is crucial, as is having reliable methods to measure their UV transmission. This research paper, which comprises Part I of II, conducts an exhaustive analysis of the predominant methodologies and associated challenges inherent in assessing ultraviolet (UV) radiation transmission and deterioration status in fenestration, with particular emphasis on the usage of spectrophotometers and radiometers. It details the economic and operational challenges associated with these instruments and the limitations they pose in terms of sample size and the impact of glazing material degradation over time. Additionally, the paper provides a comparative analysis of UV radiation transmission characteristics across different glazing configurations such as green or yellow patterned glass, laminate glass, clear glass treated with UV protection film, and float glass. The review identifies laminated glass material as offering the best protection. Although spectrophotometers and radiometers offer high levels of accuracy in transmission data detection, their adoption is hindered by considerable financial and operational challenges. The paper underscores the need for developing alternative methodologies that are economically viable, operationally less complex, and are capable of overcoming the limitations of the traditional methods of detection, which will facilitate optimal fenestration configurations for UV protection and energy efficiency in buildings. The proposed Part II paper will explore UV imaging, image processing, and computer vision techniques as potential alternative approaches.

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Section: Ultraviolet B 280-315mentioning

confidence: 95%

Section: Sample Size and Uneven Glazing Materials Degradation Over Timementioning

confidence: 99%

Ultraviolet Radiation Transmission in Buildings’ Fenestration: Part I, Detection Methods and Approaches Using Spectrophotometer and Radiometer

Onatayo

Srinivasan

Shah³

2023

Buildings

View full text Add to dashboard Cite

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“…UV radiation not only affects living organisms, but also the materials surrounding them: it causes the discoloration of pigments and dyes, the yellowing and cracking of plastics, and the loss of a material’s strength properties and gloss. UV light damages both the interior materials of cars and the skin of passengers [ 10 ], poses a danger to art and archival collections in naturally-lit galleries [ 11 ], can inhibit the growth and development of crops [ 12 ], and passes through the office building windows, damaging the skin of employees.…”

Section: Introductionmentioning

confidence: 99%

Asphaltene-Stabilized Polyisobutylene Pressure-Sensitive Adhesives for Ultraviolet Protection and Surface Bonding

et al. 2023

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The usual way to protect indoor areas from solar UV radiation is to use UV-absorbing materials, which are applied as a thin film on the surface of the windowpane. Asphaltenes are useless wastes from crude oil refining that absorb UV radiation well, which gave the idea of their use in protective coatings. Pressure-sensitive adhesives based on polyisobutylene containing from 5 to 30 wt% of asphaltenes were obtained. Deterioration of the adhesive properties with the introduction of 5–20 wt% of asphaltenes was shown by adhesion tests, which can be associated with the plasticization of the polymer matrix. At the same time, the use of 30 wt% of asphaltenes leads to the polymer matrix reinforcement with the restoration of adhesive properties to the original level or even slightly higher. The rheological study of adhesives at 25 °C and 120 °C showed the structural network formation by asphaltenes at a content of 30 wt%, explaining the increase in adhesion performance. According to microscopy, asphaltenes are flat brown glass shards in a polymer matrix. They absorb electromagnetic radiation, predominantly in the UV range, while maintaining relative translucency in the visible range. This makes it possible to obtain thin films from the asphaltene-filled adhesive for bonding glass sheets to produce UV-blocked and tinted windowpanes.

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The Properties and Lifetime of Polymer UV Films

Cited by 2 publications

References 1 publication

Ultraviolet Radiation Transmission in Buildings’ Fenestration: Part I, Detection Methods and Approaches Using Spectrophotometer and Radiometer

Ultraviolet Radiation Transmission in Buildings’ Fenestration: Part I, Detection Methods and Approaches Using Spectrophotometer and Radiometer

Asphaltene-Stabilized Polyisobutylene Pressure-Sensitive Adhesives for Ultraviolet Protection and Surface Bonding

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