A novel in situ relative-conductivity-based technique for monitoring the cure process of UV-curable polymers

Cho, Jung-Dae; Han, Seung-Taek; Hong, Ji Won

doi:10.1016/j.polymertesting.2006.08.008

Cited by 15 publications

(7 citation statements)

References 8 publications

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“…UV-initiated photopolymerization based on acrylates and methacrylates has received considerable attention due to the associated fast and solvent-free curing, multifunctionality, and negligible toxicity [13][14][15][16][17][18]. However, they are vulnerable to the inhibition of free-radical polymerization by oxygen.…”

Section: Resultsmentioning

confidence: 99%

Photocuring Behaviors of UV-Curable Perfluoropolyether-Based Fluoropolymers with and without Tertiary Amine

Cho¹,

Kim²,

Hong³

2014

OJOPM

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UV-curable perfluoropolyether (PFPE)-based fluoropolymer (PFPE-DMA) was synthesized and the photocuring behaviors of PFPE-DMA/HDDA systems with and without tertiary triethyl amine (TEA) were investigated using photo-DSC under air and nitrogen atmospheres. Photo-DSC analysis revealed that N 2 purging and the presence of TEA mitigated oxygen inhibition in the photopolymerization of the UV-curable free-radical PFPE-DMA/ HDDA system. In addition, TEA synergistically acted as a coinitiator or photosynergist under nitrogen atmosphere, which increased the cure rate and percentage conversion for the photopolymerization of PFPE-DMA/ HDDA. TEA acted as both oxygen scavenger and photosynergist. The results presented here demonstrate that investigating the photocuring behaviors of PFPE-DMA/HDDA systems is very helpful to determine the optimal curing conditions for the PFPE-DMA fluoropolymer.

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Section: Resultsmentioning

confidence: 99%

Photocuring Behaviors of UV-Curable Perfluoropolyether-Based Fluoropolymers with and without Tertiary Amine

Cho¹,

Kim²,

Hong³

2014

OJOPM

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“…3 reveals the xenon lamp can match the absorption spectrum of photoinitiator (Fig. 2) and the optical power meter due to its wavelength range [19][20][21] . Fig.4.…”

Section: Light Sourcementioning

confidence: 94%

Study on the intelligent self-healing fiber optic microbend sensors based on the photocurable material

Zhao

Hong

2008

Smart Materials V

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The paper presents a novel fiber optic microbend sensor with intelligent self-healing function, which is based upon the photocurable technology and the mode-coupling theory. In the research, a kind of photocurable material is developed and injected into the flexible hollow-center fiber embodying the sensitive optic fiber. According to the theory of fiber optic microbend sensors, the microbending mechanism causes part of the optical power to be radiated out of the fiber due to the mode-coupling. Especially when the damage of the sensitive optic fiber occurs due to the extremely small bending radius, the radiation power will increase rapidly. We use the radiation power as the curing light to initiate the photopolymerization of the photocurable material surrounding the sensitive optic fiber. The scale and speed of the photochemistry reaction mainly depend on the radiation power and the microbend degree. By this way, the photocurable material can repair the damaged area in real time according to the damaged state. This paper describes the design and performances of the intelligent self-healing fiber optic microbend sensor in detail. The experimental results reveal that the sensor has the excellent sensing property and can adjust its repairing ability according to the damaged degree automatically.

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“…The selection of the photoinitiator is of great importance in the design of UV-curable coatings, since the polymerization and crosslinking rate depends on the nature of the photoinitiator and the physical properties of the coatings [26]. However, the photoinitiators are not completely consumed in the polymerization process since it is common practice to use an excess of photoinitiators to attain a fast curing system, as demanded by the coating ink industry.…”

Section: Failure Analysis Of the Discoloration Of Uv-curable Top Coatmentioning

confidence: 99%

Discoloration mechanism of UV-curable polymer/metal hybrid coating

Kim

Lee

Choi

2013

Journal of Industrial and Engineering Chemistry

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A novel in situ relative-conductivity-based technique for monitoring the cure process of UV-curable polymers

Cited by 15 publications

References 8 publications

Photocuring Behaviors of UV-Curable Perfluoropolyether-Based Fluoropolymers with and without Tertiary Amine

Photocuring Behaviors of UV-Curable Perfluoropolyether-Based Fluoropolymers with and without Tertiary Amine

Study on the intelligent self-healing fiber optic microbend sensors based on the photocurable material

Discoloration mechanism of UV-curable polymer/metal hybrid coating

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