Effect of microstructure of fluorinated acrylic coatings on UV degradation testing

Sung, Li‐Piin; Vicini, Silvia; Ho, Derek L.; Hedhli, Lotfi; Olmstead, Christyn; Wood, Kurt A.

doi:10.1016/j.polymer.2004.06.063

Cited by 15 publications

(9 citation statements)

References 6 publications

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“…The primary processes for the degradation of DWR polymers might be hydrolysis and photo-oxidation (Kawai, 1995). UVdegradation of DWR polymers (Sung et al, 2004) can result from the exposure to sunlight and is dependent on the radiation intensity. This process however, can only take place if photoactive groups (e.g.…”

Section: Diffuse Emissions Of Dwr Related Substances During a Garmentmentioning

confidence: 99%

Properties, performance and associated hazards of state-of-the-art durable water repellent (DWR) chemistry for textile finishing

Holmquist

Schellenberger

Veen

et al. 2016

Environment International

125

142

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Section: Diffuse Emissions Of Dwr Related Substances During a Garmentmentioning

confidence: 99%

Properties, performance and associated hazards of state-of-the-art durable water repellent (DWR) chemistry for textile finishing

Holmquist

Schellenberger

Veen

et al. 2016

Environment International

125

142

View full text Add to dashboard Cite

“…The incorporation of F-containing monomers into polymeric systems has been of considerable interest for a number of years due to the fact that their presence may introduce a number of unique physical and chemical properties. − As a consequence, F-containing polymers exhibit numerous applications ranging from hollow bodies and moldings to fibers, composite materials, films, and foams. While such properties as thermal stability and chemical resistance are expected to be enhanced, decreases in surface tension and friction are consequences resulting from the presence of F-containing species. − However, exceptionally reduced surface tension and solubility in aqueous environments make synthetic efforts quite challenging, and potential adverse effects on the formulation of continuous polymeric films are also anticipated.…”

Section: Introductionmentioning

confidence: 99%

Stable Nonspherical Fluorine-Containing Colloidal Dispersions: Synthesis and Film Formation

2005

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A simple synthetic method for preparing stable colloidal dispersions that form polymeric films containing fluorinated acrylates is presented. The simultaneous presence of the dual tail anionic fluorosurfactant phosphoric acid bis(tridecafluorooctyl) ester ammonium salt (FSP) and sodium dodecyl sulfate (SDS) surfactants facilitates a suitable environment for the aqueous polymerization of methyl methacrylate/n-butyl acrylate/heptadecafluorodecyl methacrylate (MMA/nBA/FMA) colloidal particles. Polyermerization is achieved by a low-sheer monomer-starved emulsion polymerization process in which the FSP/SDS surfactant mixture significantly reduces the surface tension of the aqueous phase, thus facilitating mobility and subsequent polymerization of FMA along with MMA and nBA momomers. Using this approach, it is possible to obtain stable nonspherical MMA/nBA/FMA colloidal dispersions containing up to a 8.5% (w/w) copolymer content of FMA. These studies illustrate that the incorporation of FMA into MMA/nBA particle morphologies facilitates surface phase separation during coalescence, resulting in F-containing film−air (F−A) interfaces. Thus, surface properties with a significant decrease in the kinetic coefficient of friction as well as high contact angles can be produced.

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“…The reason why the fluor-resin coating did not show degradation is due to the helical distribution of fluorine atoms along the carbon chains, and the relatively close interaction between the fluorine atoms and the carbon chains lead to a shielding effect which imparts good UV resistances [39]. Wood et al [40] and Sung et al [41] also reported the fluorine atoms could form a continuous uniform coating film to develop a structure with strong chemical bonding, which makes it difficult to produce the free radicals which cause coating decomposition.…”

Section: Roughnessmentioning

confidence: 99%

“…Although there was a slight decrease in roughness and brightness (L*) after 5000 h of xenon-arc radiation weathering (Figures 2, 3 and 5), C specimens showed reduced water absorption after 5000 h weathering. This result is because the fluorine atoms can form the continuous uniform coating film to develop the structure with strong chemical bonding and make it difficult to produce the free radicals which cause coating decomposition [40,41]. The particular reasons for this can be explained through the test method by transmission infrared spectroscopy (FT-IR) [43] and nuclear magnetic resonance spectroscopy (Si NMR) [44], and the surface of the fluor-resin coating was analyzed using reflection infrared spectroscopy (RA-IR) and X-ray spectrometer (EDS) [45].…”

Section: Water Absorption Testmentioning

confidence: 99%

Investigation on Aesthetic and Water Permeability of Surface Protective Material under Accelerated Weathering

et al. 2021

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In this paper, experiments were conducted on the effects of aesthetic and durability of three representative surface protective material under accelerated weathering test for 5000 h. First, the adaptability of the surface protective material coating to the substrate was proven by examining the aesthetic properties and the water permeability of the building materials. Second, the pollutant resistance of the surface protective material coating to artificial stain was assessed using xenon-arc light. The result shows that the appearance of the silane types did not change significantly, and the water permeability was improved. In addition, the silicate types did not improve water permeability and the surface color was changed. Fluor- resin types effectively improved the water permeability, but the surface color became dark. Sample measurements showed changes in the average width of the contamination after weathering, with an increase after spray cleaning and ultrasonic cleaning. However, it was observed that after washing the pollution average width of all specimens due to weathering at 5000 h was almost as much or smaller than the initial value.

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Effect of microstructure of fluorinated acrylic coatings on UV degradation testing

Cited by 15 publications

References 6 publications

Properties, performance and associated hazards of state-of-the-art durable water repellent (DWR) chemistry for textile finishing

Properties, performance and associated hazards of state-of-the-art durable water repellent (DWR) chemistry for textile finishing

Stable Nonspherical Fluorine-Containing Colloidal Dispersions: Synthesis and Film Formation

Investigation on Aesthetic and Water Permeability of Surface Protective Material under Accelerated Weathering

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