Experimental and simulated study on continuous laser ablation of glass fiber epoxy resin plate

Yang, Xinrui; Jiang, Lin; Li, Mi

doi:10.1016/j.icheatmasstransfer.2023.107088

Cited by 1 publication

(2 citation statements)

References 25 publications

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“…Iriotech 8815 can instantly transfer this energy as heat, causing a rapid increase in the local temperature within the laser interaction region. This localized thermal shock and the rapid increase of the internal pressure results in a pyrolysis gas trigger and ejection/ablation of the material, leading to the formation of the surface holes. , The large amount of heat is dispersed through material ablation and gas expulsion from the epoxy plates . This reduces the energy that is needed for thermal degradation of the remaining material, stopping the creation of black residues for laser marking.…”

Section: Resultsmentioning

confidence: 99%

“… 39 , 40 The large amount of heat is dispersed through material ablation and gas expulsion from the epoxy plates. 40 This reduces the energy that is needed for thermal degradation of the remaining material, stopping the creation of black residues for laser marking. In contrast, the substitution of Iriotech 8815 by addition of Mg 2 Al-CO 3 LDH in the epoxy may reduce rapid thermal fluctuations and overheating of the polymer, as evidenced by the reduction in the number of surface holes ( Figure S4 ).…”

Section: Resultsmentioning

confidence: 99%

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Boosting NIR Laser Marking Efficiency of a Transparent Epoxy Using a Layered Double Hydroxide

Chen,

Wang,

Evans

et al. 2024

ACS Appl. Polym. Mater.

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Efficient near-infrared (NIR) laser marking on transparent polymers like polypropylene, epoxy, and polyethylene has posed a big challenge due to their lack of absorption in the NIR. Currently, inorganic additives are used to improve NIR laser marking efficiency, but they come with issues such as toxicity, high loading requirement, adverse effects on color/opaqueness, and the need for low laser head speeds. Herein, we report a new strategy of incorporating a food-grade, Mg 2 Al-CO 3 LDH as a boosting coadditive alongside the commercial NIR laser marking additive (Iriotech 8815) in an epoxy system. Our findings demonstrate that the incorporation of Mg 2 Al-CO 3 LDH can significantly increase both the darkness and contrast of marking even at high laser head speed (5000 mm/s), while minimizing surface damage. Notably, by replacing 95% of Iriotech 8815 with Mg 2 Al-CO 3 LDH, an epoxy plate can exhibit high transparency, while producing dark, sharply defined markings with excellent readable QR code markings at high laser speeds. This result offers a promising solution for enhancing high-speed NIR laser marking on transparent polymers with additional advantages of lower toxicity and cost and with minimal optical interference from high additive loadings.

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Section: Resultsmentioning

confidence: 99%