Adhesive bonding of 3D-printed plastic components

Leicht, Heinrich; Orf, Lukas; Hesselbach, Julian; Vudugula, Hemanth; Kraus, Eduard; Baudrit, Benjamin; Hochrein, Thomas; Bastian, Martin

doi:10.1080/00218464.2019.1682561

Cited by 28 publications

(25 citation statements)

References 30 publications

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“…The increase in bond strength was highest for the ABS samples, which also exhibited the highest change in WCA. The positive effect of plasma treatment on adhesion and bond shear strength for different printed surfaces and with different adhesives was reported before [ 11 , 14 , 17 ], particularly highlighting the effect of polar chemical groups on the surfaces produced by the plasma treatments [ 33 , 40 ].…”

Section: Discussionsupporting

confidence: 58%

“…Other advanced methods include surface alkali hydrolysis treatment, graft polymerization, low-temperature plasma treatment, and various surface chemical reactions [ 13 ]. Chemical smoothing can cause a smaller decrease in the tensile strength of the tested specimens, but significantly change the fracture pattern from cohesive substrate failure on non-treated parts to purely adhesive failure on chemically smoothed parts, which is likely due to a difference in surface roughness [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…Plasma treatments are promising techniques that enable rapid and chemical-free surface modifications [ 13 ]. Treatments of polymeric substrates with non-thermal plasma discharges in air increase the surface free energy and improve surface wettability, which is crucial for bonding with liquid water-based adhesives, thus improving the tensile strength of the adhesive bonds [ 11 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Sanding and Plasma Treatment of 3D-Printed Parts on Bonding to Wood with PVAc Adhesive

et al. 2021

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Additive manufacturing is becoming increasingly important for manufacturing end products, not just prototyping. However, the size of 3D-printed products is limited due to available printer sizes and other technological limitations. For example, making furniture from 3D-printed parts and wooden elements requires adequate adhesive joints. Since materials for 3D printing usually do not bond very well with adhesives designed for woodworking, they require special surface preparation to improve adhesion. In this study, fused deposition modelling (FDM) 3D-printed parts made of polylactic acid (PLA), polylactic acid with wood flour additive (Wood-PLA), and acrylonitrile-butadiene-styrene (ABS) polymers were bonded to wood with polyvinyl acetate (PVAc) adhesive. The surfaces of the samples were bonded as either non-treated, sanded, plasma treated, or sanded and plasma treated to evaluate the effect of each surface preparation on the bondability of the 3D-printed surfaces. Different surface preparations affected the bond shear strength in different ways. The plasma treatment significantly reduced water contact angles on all tested printing materials and increased the bond tensile shear strength of the adhesive used. The increase in bond strength was highest for the surfaces that had been both sanded and plasma treated. The highest increase was found for the ABS material (untreated 0.05 MPa; sanded and plasma treated 4.83 MPa) followed by Wood-PLA (from 0.45 MPa to 3.96 MPa) and PLA (from 0.55 MPa to 3.72 MPa). Analysis with a scanning electron microscope showed the smooth surfaces of the 3D-printed parts, which became rougher with sanding with more protruded particles, but plasma treatment partially melted the surface structures on the thermoplastic polymer surfaces.

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Section: Discussionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Sanding and Plasma Treatment of 3D-Printed Parts on Bonding to Wood with PVAc Adhesive

et al. 2021

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“…A possible solution for these limitations could be the combination of several different design approaches for the manufacture of the adherends or the use of surface modifications. Some of the studies applied surface modifications which are already in industrial use [ 56 , 62 , 65 , 68 ], while others [ 9 , 50 , 61 , 71 , 72 , 79 ] explored how the printing parameters affect the physical and the mechanical properties of the polymeric adherends. Plasma treatment was assessed as the most effective surface modification for this purpose as it is suitable for use in hollow structures and has the potential of being process integrated.…”

Section: Discussionmentioning

confidence: 99%

“…Leicht et al [ 62 ] investigated the effects of the construction direction ( Figure 13 ) and surface modifications on the tensile strength of adhesive bonded joints made of powder bed fusion processed PA adherends and epoxy resin. Adherends were fabricated with a geometry compliant to the Centrifugal Adhesion Testing Technology (CATT) procedure described in [ 63 ], that uses a centrifugal force to apply the load and satisfy DIN-EN-ISO 15870 standard [ 64 ].…”

Section: Joint Design Strategies For Additive Manufacturingmentioning

confidence: 99%

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

et al. 2020

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This review aims to assess the current modelling and experimental achievements in the design for additive manufacturing of bonded joints, providing a summary of the current state of the art. To limit its scope, the document is focused only on polymeric additive manufacturing processes. As a result, this review paper contains a structured collection of the tailoring methods adopted for additively manufactured adherends and adhesives with the aim of maximizing bonded joint performance. The intent is, setting the state of the art, to produce an overview useful to identify the new opportunities provided by recent progresses in the design for additive manufacturing, additive manufacturing processes and materials’ developments.

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Synthesis of a Stretchable Polyampholyte Hydrophilic Film with Compositional Gradient for Long‐Term Stable, Substrate‐Independent Fouling‐Resistant Coating

Kim

Song

Park

et al. 2022

Adv Funct Materials

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The prevention of nonspecific biofouling is crucial for technological development in biomaterials and medical devices. Thus, zwitterionic materials have attracted significant attention due to their effective fouling‐resistance, long‐term durability against oxidation, and biocompatibility. However, fabricating a substrate‐independent zwitterionic surface with outstanding fouling‐resistance remains a challenge. In this study, a polyampholyte coating that satisfies the aforementioned requirements is obtained using a vapor‐phase method. The polyampholyte coating consists of a bilayer of poly(1,3,5,7‐tetramethyl‐1,3,5,7‐tetravinyl cyclotetrasiloxane) (pV4D4) and polyampholyte, poly(2‐carboxyethyl acrylate‐co‐2‐(dimethylamino)ethyl acrylate) (pCD), stacked with compositional gradient, which are obtained via sequential deposition using initiated chemical vapor deposition. The heavily crosslinked pV4D4 acts as an adhesion promoter layer that may be applied conformally to various substrate materials with high interfacial adhesion. The pCD surface exhibits a long‐lasting, superior fouling‐resistance to proteins (20.3 ± 1.8 ng cm−2 for undiluted human serum) and microorganisms. The pCD‐grad‐pV4D4 films, coupled with the stress‐dissipative gradient interface, are highly stretchable up to 50% without compromising the fouling‐resistance. The fouling‐resistance is maintained after 1 day of sonication, 10 days of water flushing, and 30 days of water shearing. Further, the pCD‐grad‐pV4D4 films are fully transparent and patternable, making them a prospective alternative for future non‐fouling biomedical applications.

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Adhesive bonding of 3D-printed plastic components

Cited by 28 publications

References 30 publications

Effect of Sanding and Plasma Treatment of 3D-Printed Parts on Bonding to Wood with PVAc Adhesive

Effect of Sanding and Plasma Treatment of 3D-Printed Parts on Bonding to Wood with PVAc Adhesive

Review of Tailoring Methods for Joints with Additively Manufactured Adherends and Adhesives

Synthesis of a Stretchable Polyampholyte Hydrophilic Film with Compositional Gradient for Long‐Term Stable, Substrate‐Independent Fouling‐Resistant Coating

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