Tensile strengths of polyamide based 3D printed polymers in liquid nitrogen

Cruz, P. De La; Shoemake, Elijah D.; Adam, Patrick; Leachman, Jacob

doi:10.1088/1757-899x/102/1/012020

Cited by 15 publications

(9 citation statements)

References 2 publications

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“…This healing process is expedited with the application of heat. As these fascinating physical features were recognized, our original focus on application of these materials as tailorable membranes can be expanded to show the relevance of these PA‐ionenes for fibers, coatings, impact resistant materials or 3D‐printing feeds …”

Section: Resultsmentioning

confidence: 99%

Self‐healing imidazolium‐based ionene‐polyamide membranes: an experimental study on physical and gas transport properties

Kammakakam

O’Harra

Dennis

et al. 2019

Polymer International

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A new series of six imidazolium-based ionenes containing aromatic amide linkages has been developed. These ionene-polyamides are all constitutional isomers varying in the regiochemistry of the amide linkages (para, meta) and xylyl linkages (ortho, meta, para) along the polymer backbone. The physical properties as well as the gas separation behaviors of the corresponding membranes have been extensively studied. These ionene-polyamide membranes show excellent thermal and mechanical stabilities, together with self-healing and shape memory characteristics. , terephthaloyl chloride; API, 1-(3-aminopropyl)imidazole; Xy, xylyl; Tf 2 N, bis(trifluoromethylsulfonyl) imide; IC, isophthaloyl chloride), where the amide and xylyl linkages are attached at para and meta positions, exhibit superior selectivity for CO 2 /CH 4 and CO 2 /N 2 gas pairs. We also demonstrate the transport properties and diverse applicability of our newly developed ionene-polyamides, particularly [TC-API(p)-Xy][Tf 2 N], for various industrial applications. Most importantly, [TC-API(p)-Xy][Tf 2 N] and [IC-API(m)-Xy][Tf 2 N] membranes (TC

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Section: Resultsmentioning

confidence: 99%

Self‐healing imidazolium‐based ionene‐polyamide membranes: an experimental study on physical and gas transport properties

Kammakakam

O’Harra

Dennis

et al. 2019

Polymer International

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“…Next, results on the adhesion strength between adjacent layers and how this vary with processing conditions are presented. As already demonstrated, the processing parameters can be a fundamental factor in determining a better adhesion between adjacent layers [ 32 ], sometimes allowing the use of the products even in extreme temperature conditions [ 33 ]. Table 1 summarizes the ranges of variation of the printing conditions, for which the mechanical properties were analyzed.…”

Section: Resultsmentioning

confidence: 99%

Fused Deposition Modeling of Polyamides: Crystallization and Weld Formation

et al. 2020

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International newspapers and experts have called 3D printing the industrial revolution of this century. Among all its available variants, the fused deposition modeling (FDM) technique is of greater interest since its application is possible using simple desktop printers. FDM is a complex process, characterized by a large number of parameters that influence the quality and final properties of the product. In particular, in the case of semicrystalline polymers, which afford better mechanical properties than amorphous ones, it is necessary to understand the crystallization kinetics as the processing conditions vary, in order to be able to develop models that allow having a better control over the process and consequently on the final properties of the material. In this work it was proposed to study the crystallization kinetics of two different polyamides used for FDM 3D printing and to link it to the microstructure and properties obtained during FDM. The kinetics are studied both in isothermal and fast cooling conditions, thanks to a home-built device which allows mimicking the quenching experienced during filament deposition. The temperature history of a single filament is then determined by mean of a micro-thermocouple and the final crystallinity of the sample printed in a variety of conditions is assessed by differential scanning calorimetry. It is found that the applied processing conditions always allowed for the achievement of the maximum crystallinity, although in one condition the polyamide mesomorphic phase possibly develops. Despite the degree of crystallinity is not a strong function of printing variables, the weld strength of adjacent layers shows remarkable variations. In particular, a decrease of its value with printing speed is observed, linked to the probable development of molecular anisotropy under the more extreme printing conditions.

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“…52 Various researchers have explored the FFF process parameters for optimizing the printing condition as well as the output properties for polyamide based feedstock filaments. [53][54][55] PC is one of the thermoplastics, which possess high toughness and optical transparency (in some cases). Researchers have explored the feedstock filaments of PC for FFF applications.…”

Section: Commercial Feedstock Filaments Used On Fff Platformmentioning

confidence: 99%

“…52 Various researchers have explored the FFF process parameters for optimizing the printing condition as well as the output properties for polyamide based feedstock filaments. 53–55…”

Section: Commercial Feedstock Filaments Used On Fff Platformmentioning

confidence: 99%

Fused filament fabrication: A comprehensive review

Kumar

Singh

et al. 2020

Journal of Thermoplastic Composite Materials

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Fused filament fabrication (FFF) is one of the low cost additive manufacturing (AM) techniques capable of printing complex design (both with commercial and non-commercial feedstock filaments by using different processing parameters). In this paper a comprehensive review has been prepared on FFF operating capabilities from thermoplastics material’s view point. Various thermoplastic materials and composites available commercially and prepared at laboratory scale have been categorized based upon the reported studies performed (for thermal stability, mechanical properties etc.). It was observed that the nano composite based feed stock filament (prepared at lab scale) have edge over the micro-composites from thermo-mechanical properties view point. Further it has been noticed that the 3D printing is in changing phase and moving towards 4D printing of smart composites and designs. But hitherto little has been reported on printing of smart material with FFF platform. Further studies may be focused on printing of smart materials (both micro and nano composites) with FFF, as the low cost 3D printing solution in different engineering applications.

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Tensile strengths of polyamide based 3D printed polymers in liquid nitrogen

Cited by 15 publications

References 2 publications

Self‐healing imidazolium‐based ionene‐polyamide membranes: an experimental study on physical and gas transport properties

Self‐healing imidazolium‐based ionene‐polyamide membranes: an experimental study on physical and gas transport properties

Fused Deposition Modeling of Polyamides: Crystallization and Weld Formation

Fused filament fabrication: A comprehensive review

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