Fabrication of UV-curable solvent-free epoxy modified silicone resin coating with high transparency and low volume shrinkage

UV–curable polyacrylate is widely used in free–radical type UV–cure coating systems, the disadvantages of which including poor thermal stability and UV resistance can be overcome through chemical modification by silicone. However, it is a remarkable fact that the strategies for fabrication UV–cured silicone modified polyacrylates are somewhat complicated and the price of the products may be much expensive than pure UV–cured polyacrylates. In this work, an easy fabrication method to prepare inexpensive UV–cured transparent silicone modified polyacrylate coatings with good adhesion and UV resistance performance was developed from copolymers of acylates and thiol silicone resin by UV initiated thiol–ene click reaction without UV initiator. The striking results with a high application value should be emphasized that when the amount of thiol silicone resin is only one wt.% of the copolymer of acrylates, the UV–cured coatings obtained exhibit fairly good performance. These coatings prepared exhibit transparency higher than 96% (800 nm), adhesion property to glass slides can reach grade 0, pencil hardness can reach 6H, water absorption is less than 0.16%. In particular, it is observed obviously that the silicone modified polyacrylate coatings exhibit better UV resistance performance than the coating prepared with only copolymers of acrylates initiated by UV initiator 1173. It is proved that it is actually an easy fabrication method to prepare inexpensive UV–cured transparent silicone modified polyacrylate coatings with high performance by UV initiated thiol–ene click reaction of copolymers of acylates and thiol silicone resin.

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Preparation and properties studies of UV-curable silicone modified epoxy resin composite system

Journal of Applied Biomaterials & Functional Materials ◽

10.1177/2280800017753053 ◽

2018 ◽

Vol 16 (1_suppl) ◽

pp. 170-176 ◽

Cited By ~ 4

Author(s):

Zhouhui Yu ◽

Aiyong Cui ◽

Peizhong Zhao ◽

Huakai Wei ◽

Fangyou Hu

Keyword(s):

Heat Resistance ◽

Epoxy Resin ◽

Resin Composite ◽

Curing Kinetics ◽

Resin Content ◽

Silicone Resin ◽

Two Phase ◽

Uv Curable ◽

Humidity Resistance ◽

Modified Epoxy

Introduction: Modified epoxy suitable for ultraviolet (UV) curing is prepared by using organic silicon toughening. The curing kinetics of the composite are studied by dielectric analysis (DEA), and the two-phase compatibility of the composite is studied by scanning electron microscopy (SEM). Methods: The tensile properties, heat resistance, and humidity resistance of the cured product are explored by changing the composition ratio of the silicone and the epoxy resin. Results: SEM of silicone/epoxy resin shows that the degree of cross-linking of the composites decreases with an increase of silicone resin content. Differential thermal analysis indicates that the glass transition temperature and the thermal stability of the composites decrease gradually with an increase of silicone resin content. The thermal degradation rate in the high temperature region, however, first decreases and then increases. In general, after adding just 10%–15% of the silicone resin and exposing to light for 15 min, the composite can still achieve a better curing effect. Conclusions: Under such conditions, the heat resistance of the cured product decreases a little. The tensile strength is kept constant so that elongation at breakage is apparently improved. The change rate after immersion in distilled water at 60°C for seven days is small, which shows excellent humidity resistance.

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Low volume shrinkage photopolymerization system using hydrogen-bond-based monomers

Progress in Organic Coatings ◽

10.1016/j.porgcoat.2019.105308 ◽

2019 ◽

Vol 137 ◽

pp. 105308

Author(s):

Yan Yuan ◽

Cong Li ◽

Rongjin Zhang ◽

Ren Liu ◽

Jingcheng Liu

Keyword(s):

Hydrogen Bond ◽

Volume Shrinkage ◽

Low Volume

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The Silicone Resin Coating

Journal of the Japan Society of Colour Material ◽

10.4011/shikizai1937.61.699 ◽

1988 ◽

Vol 61 (12) ◽

pp. 699-710 ◽

Cited By ~ 2

Author(s):

Yasushi KATO

Keyword(s):

Silicone Resin ◽

Resin Coating

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Silver hollow optical fibers with acrylic silicone resin coating as buffer layer for sturdy structure

10.1117/12.2208314 ◽

2016 ◽

Cited By ~ 2

Author(s):

Katsumasa Iwai ◽

Hiroyuki Takaku ◽

Mitsunobu Miyagi ◽

Yi-Wei Shi ◽

Xiao-Song Zhu ◽

...

Keyword(s):

Buffer Layer ◽

Optical Fibers ◽

Silicone Resin ◽

Resin Coating

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One-pot and solvent-free synthesis of castor oil-based polyurethane acrylate oligomers for UV-curable coatings applications

Progress in Organic Coatings ◽

10.1016/j.porgcoat.2021.106398 ◽

2021 ◽

Vol 159 ◽

pp. 106398

Author(s):

Pengsong Li ◽

Zhuangzhuang Chu ◽

Yanwu Chen ◽

Teng Yuan ◽

Zhuohong Yang

Keyword(s):

Castor Oil ◽

Solvent Free ◽

One Pot ◽

Uv Curable ◽

Polyurethane Acrylate ◽

Solvent Free Synthesis

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Study on Shrinkage of Cured Volume for UV-Curing Coatings

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.731.588 ◽

2015 ◽

Vol 731 ◽

pp. 588-592 ◽

Cited By ~ 4

Author(s):

Qing Kai Wang ◽

Bei Qing Huang ◽

Xian Fu Wei ◽

Hao Chen Shen

Keyword(s):

Free Radical ◽

Uv Light ◽

Uv Curing ◽

Volume Shrinkage ◽

Curing Temperature ◽

Shrinkage Rate ◽

Uv Curable ◽

Cationic Resin ◽

Polyester Acrylate ◽

Radical Type

UV-Curable Coatings, Have been Widely Used in Machinery, Chemical Engineering, Biology, Medicine, Electronics and so on, due to their Fast Curing, Low Curing Temperature, Low VOC Emissions and Low Energy Cost. however, the Volume Shrinkage during the Curing Process Have a Great Influence on the Performance of the Coating, which Ofen Lowering Coating Adhesive Strength and Accelerating the Aging Process of Coatings Film.The Paper Select Different Kinds of Monomers (EOEOEA, HDDA, TPGDA, NPGDA, TMPTA and EO3- TMPTA) and Light Cured Resin (free Radical Type: Polyester Acrylate Resin 5600, Polyurethane Acrylate UA VP 2396, the Pure Acrylic 6536-1,cationic Resin: Epoxy Cationic Resin Omnilance OC3005) to Prepare the UV Curing Coatings. Study on the Influence of Amount of Monomer and Polymer on Polyreaction Reaction by Using Orthogonal Experimental Design Method in Order to Choose the Monomer and Polymer that has the Least Volume Shrinkage Rate, then Develop Photocureable Coating Based on Free Radical Type and Cationic Resin above. the Results Indicate that the UV-Light Photocureable Coating Prepared by Single Functionality Monomer EOEOEA and the DPGDA that Doesn’t Have Neat Molecular Structure has the Less Volume Shrinkage Rate; however, in the Aspect of Prepolymer, the Preparation of UV-Light Photocureable Coating Based on Polyester Acrylate 5600 has the Least Volume Shrinkage Rate. Rely on the Experiment Results above, Prepare the New Kind of UV-Light Photocureable Coating that has Little Volume Shrinkage Rate.

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The Influence of Reactive Diluents on the Properties of UV Dual Cured Polyurethane-Modified Epoxy Monoacrylates Films

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.477-478.1169 ◽

2013 ◽

Vol 477-478 ◽

pp. 1169-1174 ◽

Cited By ~ 2

Author(s):

Hong Bo Liu ◽

Wu Ying Zhang ◽

Feng Lin ◽

Ning Qing ◽

Ling Xu

Keyword(s):

Epoxy Group ◽

Degree Of Polymerization ◽

Volume Shrinkage ◽

Uv Curable ◽

Excellent Thermal Stability ◽

Gel Content ◽

Maximum Value ◽

Reactive Diluents ◽

Dual Curing ◽

Modified Epoxy

The UV-curable liquid compositions were developed with different oligomers (epoxy diacrylates, EDA; epoxy monoacrylates, EMA; or polyurethane-modified epoxy monoacrylates, PMEMA), reactive diluents and photoinitiators. Thin films were prepared by curing these mixtures using a high pressure mercury lamp. The change of absorption peaks of double bond and epoxy group were identified by Fourier Transform Infrared (FTIR) spectra during UV dual curing process. Gel content, mechanical, volume shrinkage and thermal characterizations of the UV-cured films were investigated. The gel content, youngs modulus and stress at break turned to maximum values as the degree of polymerization achieved the maximum value, except for the strain at break. The flexibility of UV dual cured films using PMEMA as oligomer was improved due to grafting of the soft chain segments (polyurethane). The volume shrinkage test indicated that the UV dual cured films exhibited lower internal stress and higher cohesive force than simple radical UV cured films. The thermogravimetric analysis of UV cured films revealed that UV dual cured films prepared from PMEMA showed excellent thermal stability.

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