3D printing PLA and silicone elastomer structures with sugar solution support material

Hamidi, Armita; Jain, Shrenik; Tadesse, Yonas

doi:10.1117/12.2258689

Cited by 6 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Plott and Shih [7] used a humidifier to enhance moisture curing and observed that bridging up to 10 layers of silicone can be done without the need of a support structure. Hamidi et al [16] used melted sugar as a support material to print silicone, but could only achieve limited dimensional and geometrical accuracy. Some research groups attempted to develop a hydrostatic AM process to create support-free soft structures [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Overhang Structures Using Moisture-Cured Silicone with Support Material

Muthusamy

Safaee

Chen

2018

JMMP

View full text Add to dashboard Cite

Additive manufacturing (AM) of soft materials has a wide variety of applications, such as customized or wearable devices. Silicone is one popular material for these applications given its favorable material properties. However, AM of silicone parts with overhang structures remains challenging due to the soft nature of the material. Overhang structures are the areas where there is no underlying structure. Typically, a support material is used and built in the underlying space so that the overhang structures can be built upon it. Currently, there is no support structure that has been used for AM of silicone. The goal of this study is to develop an AM process to fabricate silicone parts with overhang structures. We first identified and confirmed poly-vinyl alcohol (PVA), a water-soluble material, as a suitable support material for silicone by evaluating the adhesion strength between silicone and PVA. Process parameters for the support material, including critical overhang angle and minimum infill density for the support material, are identified. However, overhang angle alone is not the only determining factor for support material. As silicone is a soft material, it deflects due to its own weight when the height of the overhang structure increases. A finite element model is developed to estimate the critical overhang height paired with different overhang angles to determine whether the use of support material is needed. Finally, parts with overhang structures are printed to demonstrate the capability of the developed process.

show abstract

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Overhang Structures Using Moisture-Cured Silicone with Support Material

Muthusamy

Safaee

Chen

2018

JMMP

View full text Add to dashboard Cite

show abstract

“…18 Additionally, micro-syringe dispensing systems have been applied for 3D-printing porous silicone structures with reliable quality. 19 Support materials such as polyvinyl alcohol 20 and sugar solution 21 can be used for silicone overhang structure design. After printing, many silicone parts, that are not room temperature vulcanizates which cure over a long time at ambient conditions, have to be cured with UV light or heat.…”

Section: Highlightsmentioning

confidence: 99%

Material extrusion additive manufacturing of dual material composite thermoset silicone components

Peeke,

Liu,

Periyasamy

et al. 2023

Polymer Engineering & Sci

View full text Add to dashboard Cite

Additive manufacturing (AM) is a disruptive manufacturing process that gives designers freedom to create highly complex shapes through free‐form fabrication. The majority of polymers used in extrusion AM are thermoplastics because they are easy to process in affordable machines. While there are a number of moderate modulus thermoplastics in regular use in AM, thermoplastics are known to weaken with increases in temperature or exposure to solvents and many commodity thermoplastics used in AM are brittle. On the other hand, there are few elastomers, and even fewer elastomer reinforcement schemes, that are accessible using standard AM technologies. In this work, we report a novel dual extrusion process that integrates elastomeric silicone with reinforcing thermoplastic. By developing and demonstrating a dual extrusion 3D printer that can process common thermoplastics with commercially available thermosetting silicones, new types of composite elastomers are reported with good mechanical performance. The 0°/20°/−20° grid pattern thermoplastic reinforced samples achieved 2.5 MPa tensile strength in low extension region (0.5 strain), which improves the initial stiffness of the composite component. Desired mechanical responses of composite structures can be realized by tuning the reinforcement volume ratio and infill percentages, and applying various types of reinforcement mesh patterns and thermoplastics.Highlights A dual extrusion process integrates fus filament fabrication and direct ink writing technologies. Thermoplastic reinforced silicone composite with stiff/soft properties. Tunable volume ratio, infill percentage, mesh pattern, and material option.

show abstract

“…are available in the market for support material in traditional FDM whose prices vary in 120$ to 80$ per Kg. 38 The average density of FDM materials varies from 1-2 gm/cm 3 . Therefore the saving price while using hybrid FDM will vary from 0.2-0.4 $ for 2000 mm 3 of support material.…”

Section: Calculation Of Build Time and Materials Requiredmentioning

confidence: 99%

Design and development of a rapid prototyping system combining traditional fused deposition modeling and reconfigurable pins platform

Charak

Sinha

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

View full text Add to dashboard Cite

Additive manufacturing, also commonly referred to as 3D printing, has enabled the rapid production of parts possessing complex geometry. Despite Fused Deposition Modeling (FDM) being the most popular process, it still suffers from certain limitations, such as production time and material required to build the material support structure for overhang parts. This results in increased total build time and material requirement. This article aims to eliminate these limitations by using a proposed hybrid reconfigurable pin FDM system. A hybrid system is proposed to eliminate the problem of support build time and material requirements. The proposed hybrid FDM is the combination of traditional FDM with a reconfigurable pins platform. The proposed hybrid system has been implemented for printing an overhang test part. The result analysis also reveals that the proposed hybrid system is an effective way of producing overhang parts without material support structures. A real-life case example is considered for validation of the proposed reconfigurable pins platform.

show abstract

3D printing PLA and silicone elastomer structures with sugar solution support material

Cited by 6 publications

References 15 publications

Additive Manufacturing of Overhang Structures Using Moisture-Cured Silicone with Support Material

Additive Manufacturing of Overhang Structures Using Moisture-Cured Silicone with Support Material

Material extrusion additive manufacturing of dual material composite thermoset silicone components

Design and development of a rapid prototyping system combining traditional fused deposition modeling and reconfigurable pins platform

Contact Info

Product

Resources

About