Photoageing of an electron beam cured polyurethane acrylate resin

Bénard, Freddy; Mailhot, Bénédicte; Mallégol, Jacky; Gardette, Jean‐Luc

doi:10.1016/j.polymdegradstab.2008.03.008

Cited by 17 publications

(9 citation statements)

References 18 publications

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“…The main types of acrylic oligomers are epoxy acrylates, polyester acrylates, polyether acrylates, urethane acrylates and silicone acrylates (Mehnert et al , 1998; Mehnert, 1995). In recent times, much attention has been paid to radiation curing of urethane acrylate resins for surface coating applications (Bajpai et al , 2002; Lu et al , 2006; Benard et al , 2008; Takashi et al , 1989). Urethane acrylate oligomers offer a wide range of excellent applications, such as high tensile strength, toughness combined with excellent resistance to chemicals and solvents and self cleaning properties (Yang et al , 2001; Byoung‐Hoo and Hyun‐Joong, 2006; Srba et al , 2004).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of urethane acrylate from PENTA based polyol and EB curing with varying ratio of TMTPA

Deshmukh

Mahanwar

Sabharwal

2012

Pigment &Amp; Resin Technology

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Purpose -Urethane Acrylate Oligomer with 100% solids was synthesised and characterised in order to study the application in electron beam curing with varying ratio of Trimethylol propane triacrylate (TMPTA). The purpose of this paper is to study effect of TMPTA addition on the crosslink density and different coating properties. Design/methodology/approach -Polyester polyol was synthesised by reacting single diacid, adipic acid (AA), with Pentaerythritol (PENTA) and 1,6-hexanediol (HD). Further, Urethane acrylate resin was synthesised by using Isophorone diisocyanate (IPDI), hydroxy ethyl acrylate (HEA) and Polyester polyol. The polyester polyol and urethane acrylate oligomer were characterised by 1H NMR, 13C NMR, FTIR and GPC. Further, TMPTA was added as a crosslinker to the urethane acrylate oligomer and cured by electron beam radiation. The cured UA films having varying concentration of TMPTA were employed to evaluate thermal property, contact angle analysis, mechanical and chemical properties. Findings -The obtained results showed improvement in their chemical properties, mechanical properties, thermal properties and water contact angle at 20% of TMPTA iconcentration. The TMPTA also reduced the dose required for the curing.Research limitations/implications -The resin can be synthesised from different isocyanates as TDI, MDI and HMDI, etc. The study can also be done with different multi or mono functional monomers such as methacrylate, hexanediol diacrylate, ethylene glycol diacrylate, etc. Practical implications -The paper provides the better solution to reduce the cost of the electron beam radiation required for the curing. Social implications -The method presented in the paper could be very useful for controlling environmental pollution; as the conventional method of curing releases volatile organic compounds (VOC). Originality/value -In this paper, urethane acrylate and TMTPA cured with electron beam are shown to offer good coating properties. A high-solid urethane acrylate coating would find numerous industrial applications in surface coatings.

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Section: Introductionmentioning

confidence: 99%

Synthesis of urethane acrylate from PENTA based polyol and EB curing with varying ratio of TMTPA

Deshmukh

Mahanwar

Sabharwal

2012

Pigment &Amp; Resin Technology

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“…Table 3. Vibrational bands of UV curable TC print and their assignations [47][48][49][50][51][52][53]. In the case of all prints, the ink penetrates into the surface of cellulose-based paper but stays over the surface on polypropylene-based printing substrate since it is not absorbent, as confirmed by the surface roughness measurements as well (Table 2).…”

Section: Ftir Spectroscopy Of Thermochromic Ink and Papersmentioning

confidence: 62%

Understanding the Role of Paper-Ink Interactions on the Lightfastness of Thermochromic Prints

et al. 2023

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Thermochromic inks (TC) have received increasing attention in recent years, particularly in the design and packaging industries. Their stability and durability are crucial for their application. This study highlights the detrimental effects of UV radiation on the lightfastness and reversibility of thermochromic prints. Three commercially available TC inks with different activation temperatures and in different shades were printed on two different substrates, cellulose and polypropylene-based paper. Used inks were vegetable oil-based, mineral oil-based and UV-curable. The degradation of the TC prints was monitored using FTIR and fluorescence spectroscopy. Colorimetric properties were measured before and after exposure to UV radiation. The substrate with a phorus structure exhibited better colour stability, suggesting that the chemical composition and surface properties of the substrate play a crucial role in the overall stability of thermochromic prints. This can be explained by the ink penetration into the printing substrate. The penetration of the ink into the structure (cellulose fibres) protects the ink pigments from the negative effect of the UV radiation. Obtained results suggest that although the initial substrate may appear suitable for printing, its performance after ageing may not be optimal. In addition, the UV curable prints show better light stability than those made of mineral- and vegetable-based inks. In the field of printing technology, understanding the interplay between different printing substrates and inks is critical to achieve high-quality, long-lasting prints.

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“…There are several simulation studies dealing with the change in elastic constants of polymeric thermosets during the curing process [14,21,28]. However, these studies mainly focus on the change of Young's modulus with temperature by applying a linear tensile strain.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Multi-scale simulation of degradation of polymer coatings: Thermo-mechanical simulations

Makki

Adema

Peters

et al. 2016

Polymer Degradation and Stability

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Photoageing of an electron beam cured polyurethane acrylate resin

Cited by 17 publications

References 18 publications

Synthesis of urethane acrylate from PENTA based polyol and EB curing with varying ratio of TMTPA

Synthesis of urethane acrylate from PENTA based polyol and EB curing with varying ratio of TMTPA

Understanding the Role of Paper-Ink Interactions on the Lightfastness of Thermochromic Prints

Multi-scale simulation of degradation of polymer coatings: Thermo-mechanical simulations

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