Paints, Coatings and Solvents

Stoye, Dieter; Freitag, W.

doi:10.1002/9783527611867

Cited by 89 publications

(11 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Firstly, the collected Raman spectra were compared with those stored in the spectral library of the KnowItAll software (Bio-Rad Laboratories, Inc.). Due to the presence of pigments, in many cases, collected Raman spectra resulted mainly due to the signals of the pigment itself 19,20 . It is known that Raman scattering is more sensitive to the chemical functional groups of pigments, which cover with their signals the entire Raman spectrum, than to the polymeric matrix 21 .…”

Section: Resultsmentioning

confidence: 99%

Plasticenta: Microplastics in Human Placenta

Ragusa

Svelato

Santacroce

et al. 2020

Preprint

View full text Add to dashboard Cite

Summary paragraphMicroplastics are particles smaller than five millimetres obtained from the degradation of plastic objects abandoned in the environment. Microplastics can move from the environment to living organisms and, in fact, they have been found in fishes and mammals.Six human placentas, prospectively collected from consenting women with uneventful pregnancies, were analyzed by Raman Microspectroscopy to evaluate the presence of microparticles. Detected microparticles were characterized in terms of morphology and chemical composition.12 microparticles, ranging from 5 to 10 μm in size, were found in 4 out of 6 placentas: 5 in the foetal side, 4 in the maternal side and 3 in the chorioamniotic membranes. All the analyzed microparticles were pigmented: three of them were identified as stained polypropylene, while for the other nine it was possible to identify only the pigments, which are all used for man-made coatings, paints and dyes.Here we show, for the first time, the presence of microparticles and microplastics in human placenta. This sheds new light on the impact of plastic on human health. Microparticles and microplastics in the placenta, together with the endocrine disruptors transported by them, could have long-term effects on human health.

show abstract

Section: Resultsmentioning

confidence: 99%

Plasticenta: Microplastics in Human Placenta

Ragusa

Svelato

Santacroce

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Interesting results were also obtained using IR Fourier spectroscopy that takes into account the interaction of the epoxy resin with the anhydride hardener in the presence of γ-aminopropyltriethoxysilane (γ-APS) [29]. Differential spectra show [4] that γ-APS forms a part of the structure of the hardened epoxy matrix in two ways: 1) by interaction with the epoxy groups of the resin; and 2) by reactions with the carboxy groups of the anhydride hardener.…”

Section: General Information About the Structure And Properties Of Organosilanesmentioning

confidence: 99%

“…The use of anticorrosive polymer and paint coatings (PC) is the most popular way to protect metal structures from corrosion [3,4]. It accounts for more than 90% of the costs of anti-corrosion measures.…”

Section: Introductionmentioning

confidence: 99%

The use of organosilanes to inhibit metal corrosion. A review

Петрунин¹,

Gladkikh²,

Малеева³

et al. 2019

Int. J. Corros. Scale Inhib.

View full text Add to dashboard Cite

A review of scientific and technical literature on the development of methods for the deposition of organosilicon coatings by modifying metal surfaces with organosilanes before applying an anti-corrosion polymer or paint coating is presented. The review covers scientific and technical information concerning the achievements in the deposition of organosilicon nanolayers on various metal surfaces and their characterization by modern research methods. The choice of organosilanes capable of creating siloxane surface layers that significantly increase the anticorrosive efficiency of a polymer/paint coating, i.e. providing both efficient corrosion protection and high adhesion of the polymer coating to the metal, is considered and justified. The processes that occur upon hydrolysis of organosilanes in aqueous solutions and upon interaction of silanes with a metal surface are considered. The main theories that describe the finishing action of organosilanes at a metal-polymer interface and the hypotheses that explain the mechanism of the formation of metal-siloxane bonds with the surface are presented. The mechanism of the anticorrosive action of siloxane surface layers is considered. The application of surface layers formed on a metal by modification with aqueous solutions of environmentally safe organosilanes for replacement of conversion coatings obtained by surface treatment with toxic hexavalent chromium compounds is discussed. It is shown that corrosion inhibitors are added to modifying aqueous organosilane compounds in order to enhance the anticorrosive efficiency of coatings and to provide the "self-healing" effect. Information on the synergistic effect of mixtures of organosilanes with corrosion inhibitors is provided and the mechanism of synergistic action of the mixtures is discussed.

show abstract

“…Proceeding from the set of operational characteristicshigh strength indicators, chemical and atmospheric re sistance, adhesion to many materials -the development of IPP based on epoxy resins is promising [5,6]. Taking into account the complexity of the processes during the formation of a protective carbon layer, the selection of the optimal ratio of the components of an intumescent fire retardant coating is advisable to carry out experimentally, followed by the construction of mathematical dependences of the swelling ratio on the composition of the coating [7].…”

Section: Introductionmentioning

confidence: 99%

Development and optimization of fire-protective coating composition based on epoxypolymers

Hryhorenko

Zolkina

2021

TAPR

View full text Add to dashboard Cite

The object of research is intumescent fire retardant coatings based on epoxy resins. The research is aimed at the development of mathematical models of the dependence of the swelling rate of intumescent fire retardant coatings on their composition. Considering the complexity of the processes during the formation of a protective carbon layer, it is advisable to select the optimal ratio of the components of an intumescent fire retardant coating experimentally, followed by the construction of mathematical dependences of the swelling ratio on the coating composition. Therefore, experimental studies aimed at developing and optimizing the composition of an intumescent fire retardant coating based on epoxy polymers are an important task. The studies were carried out in accordance with the theory of planning experiments with the construction of an orthogonal compositional plan of the second order. A linear swelling factor was chosen as the response function. Compositions based on the ED-20 epoxy oligomer, cured with polyethylene polyamine and filled with ammonium polyphosphate, aluminum hydroxide, and graphite additive were used for the study. Based on the results of processing the experimental results, a regression equation was obtained and response surfaces were constructed that describe the dependence of the linear swelling coefficient Cs of an intumescent composition based on an epoxy oligomer on the content of ammonium polyphosphate, aluminum hydroxide and graphite additive. A complex relationship is shown between the content of components and the linear swelling coefficient Cs with different ratios of the components. The optimum by the linear swelling coefficient (Cs=68.1) content of the components in the epoxy polymer was determined, amounting to 20 wt. including for ammonium polyphosphate, 15 mass parts including for aluminum hydroxide and 3 mass parts for the graphite additive. However, with such a ratio, the «self-extinguishing» condition is not met (Cs=27 %). Filling the composition with ammonium polyphosphate in an amount of 26.3 mass parts including, aluminum hydroxide 25 mass parts and 3.5 mass parts including graphite additives allows to get an intumescent fire retardant coating with a swelling ratio Cs over 63 and a reduced level of flammability (Ci=31 %)

show abstract

Paints, Coatings and Solvents

Cited by 89 publications

References 0 publications

Plasticenta: Microplastics in Human Placenta

Plasticenta: Microplastics in Human Placenta

The use of organosilanes to inhibit metal corrosion. A review

Development and optimization of fire-protective coating composition based on epoxypolymers

Contact Info

Product

Resources

About