Polyethylene glycol modified epoxy acrylate UV curable 3D printing materials

Self Cite

The research and application of ultraviolet‐curable 3D printed shape memory polymers have been focused on artificial intelligence, bionic engineering, and medical devices, and so forth. However, this photopolymer has the disadvantages of low toughness and easy to be damaged. As a healing agent and toughening agent, the thermoplastic polymer polycaprolactone (PCL) is used to improve the utility value of 3D printed cyclic trimethylolpropane formal acrylate (CTFA) shape memory composites. The filling content of PCL is evaluated through multiscale observation, mechanical test, thermal analysis and comparison before and after healing. PCL with 5% filling content not only improves the flexibility and scratch healing ability of 3D printed samples, but also maintains the shape memory characteristics of the samples. The blending structure constructed by PCL and CTFA polymers plays an important role in balancing the various properties of the 3D printed composites.

Section: Resultsmentioning

confidence: 99%

“…For consumables with pure light-curing monomer, this side texture is more accurate than FDM 3D printed material. 22,23 As a thermoplastic healing agent, PCL could repair 1 mm deep cracks or scratches on 3D printed samples, as shown in Figure 2. At 90 C, PCL in the solution melted and flowed into the crack.…”

Section: Multiscale Structure Observationmentioning

confidence: 99%

Study on the healing performance of poly(ε‐caprolactone) filled ultraviolet‐curable 3D printed cyclic trimethylolpropane formal acrylate shape memory polymers

Wen

Chen

Wang

et al. 2022

Self Cite

“…Photopolymerization 3D printing technology is widely used as a representative of additive manufacturing. [1][2][3] Its prominent advantage is the high precision of 3D printed products, which can reach the micron level. 4 The UVcurable polymers are sensitive to ambient temperature and show a physical state of softening or hardening.…”

Section: Introductionmentioning

confidence: 99%

“…Photopolymerization 3D printing technology is widely used as a representative of additive manufacturing 1–3 . Its prominent advantage is the high precision of 3D printed products, which can reach the micron level 4 .…”

Section: Introductionmentioning

confidence: 99%

Thermal responsive photopolymerization 3D printed shape memory polymers enhanced by heat transfer media

Yang

Chen

et al. 2022

Self Cite

Photosensitive resins are the research and development foundation of photopolymerization 3D printed products. We have found that cyclic trimethylolpropane formal acrylate (CTFA) and 2-phenoxy ethyl acrylate (PHEA) resins are suitable for UV-curable 3D printing consumables. Their photopolymers exhibit excellent shape memory characteristics at shape change temperature, shape recovery speed, shape extension limit, and shape maintenance ability. Moreover, we have analyzed the internal and external factors affecting these shape memory characteristics through several tests, including multi-scale structure observation, thermal analysis, and mechanical tests. Furthermore, the complex hollow model design and multiple heat transfer media are adopted to expand the concept of additive manufacturing, and improve the practicability of 4D printing intelligent products.

“…Epoxy acrylates have excellent toughness, flexibility, strength, chemical resistance, and low dimensional shrinkage. 16 These resins are considered best for a variety of commercial applications in the market. 17 Epoxy acrylate based on bisphenol-A is the most conventional photocuring resin that delivers good strength, toughness, adhesion, and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ultraviolet curable bisphenol‐based epoxy acrylates and comparative study on its physico‐chemical properties

Desai

Jagtap

2021

Photocuring resins have emerged as cutting-edge technology in coatings, adhesives, composites, additive manufacturing, and so forth. In the present work, different bisphenol, namely A, F, and S, were used to synthesize low molecular weight epoxy resin, which was further reacted with acrylic acid monomer to form bisphenol-based epoxy acrylate (BEA). The BEA resins were formulated using reactive diluents, trimethylolpropane triacrylate, and hexanediol diacrylate in the ratio of 0-40 wt% at the increment of 10 wt% alongside a fixed quantity photoinitiator. These resins were then cast into dumbbell-shaped specimens by irradiating them under ultraviolet (UV) light. The structural elucidation of BEA resins was performed using Fourier transform infrared, nuclear magnetic resonance, and UV-Vis spectroscopy. The formulated resins were also studied for their rheological properties. Further, the UV cured specimens were evaluated for mechanical, thermal, contact angle, and extent of curing. These outcomes were utilized for establishing the structure-property relationship based on the functionality, reactivity, and molecular structure of synthesized BEA resins, which controllers the design architecture and crosslinking density of UV-cured specimens.