EnvisionTEC Blows Up RAPID with Mega Composite 3D Printer and More > ENGINEERING.com | Ptfe Syringe Filter

Milling copper-clad boards is becoming more accessible every year; if you’re intrigued by the idea our own [Adil Malik] provided an excellent walkthrough of the workflow and requirements for milling instead of etching.

“Last week we printed a three-part clamp for an automated bottle filling station where the requirement was for high-purity polymer with lot traceability back to the point of manufacture.We also completed a series of 1, 2 and 3 inch diameter flange prints on 6 inch pipe stubs.  These will be inserted into a PVDF/FRP dual laminate acid storage tank and hot gas welded to the tank interior lining which is also manufactured from PVDF.  Our prints are used as linings for chemical resistance and then over wrapped with a fiberglass composite to provide mechanical strength. We are printing a number of filters for a hand-pumped water purification system. The PVDF filters will allow aggressive chemical cleaning. We are designing chemical storage containers used in pharmaceutical applications. raditionally these have been made from stainless steel but are susceptible to biofilm growth which require CIP (clean in place) procedures. The CIP results in rouging or rust contamination on the stainless steel surface and possible downstream process contamination. We will print these vessels in Fluorinar-C and incorporate the sanitary fittings directly into the print.”

If you have any special requirements, please let us know and we will offer you the report as you want.

(A) In situ DRIFT spectra of CO adsorption over the RR2Ti-fresh sample following alternating pretreatment with 10 volume % H2/He at 500°C (for the first and third cycles) or 10 volume % O2/He at 400°C (for the second and fourth cycles) for 1 hour. (B) CO conversion at 80°C for the RR2Ti-fresh sample as a function of pretreatments described in (A). Reaction gas composition: 1 volume % CO + 1 volume % O2 balanced with He; gas flow rate, 33.3 ml/min; space velocity (SV), 64,452 ml gcat−1 hour−1.

Thomann, M. et al. Influence of a magnesium-fluoride coating of magnesium-based implants (MgCa0.8) on degradation in a rabbit model. J. Biomed. Mater. Res. Part A 93, 1609–1619 (2010).

The presence of ions in the MXene interlayer, specifically K+, reduce H2O mobility and “glue” the MXene sheets together (15). To test this, we prepared Ti3C2Tx intercalated with K+ (13). When the powders were equilibrated at various humidities and pressed into the discs at 300 MPa as before, the final basal spacing was no longer a function of RH and, instead, remained at a constant ~12.5 Å (Fig. 5A). Further, even the sample equilibrated at 100% RH did not show evidence of sheet slippage in SEM after pressing into a disc (Fig. 5B). Therefore, we conclude that the presence of K+ ions inhibits the behavior observed in Fig. 4, and any expansive behavior that may persist after pressure is released.

XRD was measured to gain knowledge about the cobalt and carbon phases present in the composite materials. After pyrolysis at 700°C (Co@Chitosan-700), the cubic phase of metallic cobalt and graphitic carbon was indexed (fig. S9) from the received powder pattern. In contrast to related known cobalt catalysts (32, 33), no crystalline cobalt oxides (Co3O4 or CoO) were observed. Aberration-corrected STEM analysis was conducted from the fresh catalyst, as well as from the eight-times-recycled one. Before use, the catalytic material consisted mainly of metallic cobalt particles with graphitic carbon attached to the surface and with a rather wide range of sizes (roughly 10 to 300 nm observed; Fig. 1, A and B, and figs. S2 to S4). Cobalt oxide could be found as some very small crystallites on the surface of the metallic particles, which is in contrast to previous systems, in which cobalt was mostly present as oxides, rather than metallic (32, 33). In addition, electron energy loss spectroscopy (EELS) suggests the presence of nitrogen located in an amorphous carbon phase accompanying the graphitic carbon structures. In/on both carbon structures, bright contrast spots could be observed in the high-angle annular dark-field (HAADF) images. These might be a hint for single cobalt surface atoms; however, this could not be ensured spectroscopically because of their low density on the carbon. The small cobalt oxide particles might consist of CoO; however, the noisy oxygen K-edge in the energy loss spectrum of the small Co oxide crystallites makes comparison to literature data (41) difficult (figs. S4 and S8).

The MoLa alloy comprising 1.1wt % Lanthana exhibits strong warpage-resistance, high strength properties, and has the highest creep resistance of all grades offered by H.C. Starck. Its strength is five folds higher than pure molybdenum at 1500°C and higher than that of the TZM alloy above 1400°C. MoLa alloys deliver superior performance in applications requiring high-temperature dimensional stability and sag resistance such as furnace elements, sintering boats, and setter tiles.

Liposomes are small vesicles characterized by a hydrophilic core surrounded by a phospholipid bilayer membrane whose composition can be adjusted to increase the therapeutic index of the encapsulated drug while minimizing its side effects. Liposomes are biodegradable and the Mononuclear Phagocyte System (MPS) uptake is strongly reduced when polyethylene glycol (PEG) is included in the membrane composition (Stealth Liposomes). Moreover, liposomes can be selectively trapped by the tumor due to enhanced permeation and retention38. Doxil, a PEGylated liposome-encapsulated form of doxorubicin, was the first FDA-approved nano-drug. It ensures prolonged blood circulation and lower cardiotoxicity when compared to free doxorubicin39.

MLCCs around a microprocessor. By Elcap [CC BY-SA 3.0], via Wikimedia CommonsIn the 1920s mica wasn’t as abundant in Germany and so they experimented with new families of ceramic capacitors, finding that titanium dioxide (rutile) had a linear temperature dependence of capacitance for temperature compensation and could replace mica capacitors. They were produced in small quantities at first and larger quantities in the 1940s. They consisted of a disc metalized on both sides.

Airbus Defence and Space, 3D Systems collaborate to reduce weight, consolidate parts, and accelerate production of a satellite component.

At 16 weeks after the implantation, as shown in Fig. 8a, the two scaffolds were almost degraded completely and replaced by newly formed bone and the inflammatory responses to both 250-PMg and 400-PMg scaffolds were alleviated with progressive time after implantation. What is more, compared with 250-PMg scaffold, more new bone tissues are formed in the implant site of 400-PMg scaffold. The upper results were further confirmed by the sequential fluorescent labeling. As shown in Fig. 8b, stronger density and more widely spread area of Alizarin Red S (red) and calcein (green) fluorescence were observed in the 400-PMg scaffold group than that in the 250-PMg scaffold group, which demonstrated that open-porous Mg scaffold with larger pore size stimulated more new bone formation.