Design and synthesis of bio-based UV curable PU acrylate resin from itaconic acid for coating applications

Abstract Within this study, the effect of functional additives and processing conditions on the overheating protection performance of thermotropic systems with fixed domains (TSFD) for overheating protection purposes was evaluated. The focus was on improving the overheating protection performance of a prototype TSFD based on a UV curable acrylate resin by optimization of the material constitution (addition of functional additives like surfactants and nucleating agents) and the processing conditions (temperature conditions during manufacturing, annealing). For the evaluated system, an effect of the nucleating agent on the overheating protection performance was ascertained. Furthermore, omission of an annealing step improved the overheating protection performance slightly.

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UV Curable Heat Resistant Epoxy Acrylate Coatings

Chemistry & Chemical Technology ◽

10.23939/chcht04.03.205 ◽

2010 ◽

Vol 4 (3) ◽

pp. 205-216

Author(s):

Firdous Habib ◽

◽

Madhu Bajpai ◽

Keyword(s):

Heat Resistance ◽

Chemical Resistance ◽

Polymeric Materials ◽

Organic Polymer ◽

Epoxy Acrylate ◽

Uv Curable ◽

Heat Resistant ◽

Acrylate Resin ◽

Physical And Chemical ◽

Silicone Acrylate

Polymeric materials are exposed to high temperatures that results in lowering of the film integrity. A blend of an epoxy resin with the silicone acrylate resin was developed to provide high heat resistance UV cured coatings. Earlier siliconized epoxy coatings had been developed by conventional curing. But due to environmental awareness, high productivity rate, low process costs and energy saving UV curable coatings are enjoying considerable growth. Thermally stable UV cured coatings used in the present study were developed from silicone acrylate and epoxy acrylate resin with different diluents and photoinitiator. Such coatings provide higher thermal stability (693 K) along with physical and chemical resistance. In addition, such coatings can also be obtained by using functional amino silanes. The resin developed provides a simple and practical solution to improve heat resistance along with physical and chemical resistance of the UV cured coatings. The purpose of this research paper is to develop UV curable heat resistant coatings by the combination of inorganic and organic polymer, taking epoxy acrylate as a base resin.

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Developing a UV-Curable, Environmentally Benign and Degradable Elastomer for Soft Robotics

MRS Advances ◽

10.1557/adv.2018.133 ◽

2018 ◽

Vol 3 (27) ◽

pp. 1551-1556 ◽

Cited By ~ 1

Author(s):

Jacob Rueben ◽

Stephanie Walker ◽

Stephen Huhn ◽

John Simonsen ◽

Yiğit Mengüç

Keyword(s):

Itaconic Acid ◽

Uv Curing ◽

Environmentally Benign ◽

Soft Robotics ◽

One Pot ◽

Polymer Backbone ◽

Uv Curable ◽

Chemical Reagents ◽

Methylene Groups

ABSTRACTThis paper introduces preliminary work on a UV-curable, environmentally benign and degradable elastomer, poly(glycerol sebacate itaconate), or PGSI, for use in soft robotics. A one-pot, solvent-free synthesis route using safe and inexpensive chemical reagents was developed to enable easy adoption into soft robotics labs. Material characterization of non-aged PGSI samples gave: ultimate tensile strength (UTS) ranging from 134 to 193 kPa with moduli ranging from 57 to 131 kPa and elongations at break ranging from 105 to 137 % (12 samples from 6 batches tested), and resilience values ranging from 73 to 82 % (3 samples from 3 batches tested). FTIR analysis showed a possible decrease in carbon-carbon double bonds after UV curing, evidencing a decrease in itaconic acid methylene groups from photoinitiated free radical cross-linking. NMR on the pre-polymer suggested incorporation of itaconic acid into the main polymer chain and evidence of heterogeneity of the polymer backbone resulting from glycerol bonding. An example molded soft pocket pneumatic actuator is created and briefly characterized. With further development, PGSI can be a degradable material to incorporate into temporary soft robots.

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UV‐curable polyurethane acrylate resin containing multiple active terminal groups for enhanced mechanical properties

Journal of Applied Polymer Science ◽

10.1002/app.48147 ◽

2019 ◽

Vol 136 (43) ◽

pp. 48147 ◽

Cited By ~ 4

Author(s):

Huajun Duan ◽

Wenjing Dong ◽

Xin Wang ◽

Xiaoxiao Tao ◽

Huiru Ma

Keyword(s):

Mechanical Properties ◽

Uv Curable ◽

Polyurethane Acrylate ◽

Acrylate Resin

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Thermal and Optical Characterization of Polymer-Dispersed Liquid Crystals

International Journal of Polymer Science ◽

10.1155/2012/767581 ◽

2012 ◽

Vol 2012 ◽

pp. 1-13 ◽

Cited By ~ 5

Author(s):

Robert A. Shanks ◽

Daniel Staszczyk

Keyword(s):

Liquid Crystals ◽

Liquid Crystalline ◽

Scanning Calorimetry ◽

Uv Curable ◽

Polymer Dispersed Liquid Crystals ◽

The Matrix ◽

Polymer Dispersed ◽

Acrylate Resin ◽

Display Order

Liquid crystals are compounds that display order in the liquid state above the melting temperature and below the mesogenic isotropic temperature. Polymer-dispersed liquid crystals (PDLCs) are composite materials in which liquid crystalline material is dispersed within a polymer matrix to form micron-sized droplets. The aim was to prepare several cholesteryl esters or alkoxybenzoic acid PDLCs and characterise thermal and optical properties. Differential scanning calorimetry and polarized optical microscopy were employed. The matrix polymer was a one-component UV-curable epoxy-acrylate resin. PDLCs were formed through entropy controlled phase separation resulting from UV-initiated crosslinking. The liquid crystals, both as mesogenic moieties and as dispersed droplets, exhibited various textures according to their molecular order and orientation. These textures formed in constrained regions separated by phase boundaries that occurred at temperatures characteristic of each liquid crystal used. The PDLC phase transitions occurred at temperatures lower than those exhibited by the mesogenic components in the neat state.

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