Researchers at the US Department of Energy (DOE) Argonne National Laboratory are combining nanodiamonds with a two-dimensional molybdenum disulfide layer and breaking them to create a self-generated, very low-friction dry lubricant. Lubricants last a long time and are almost permanent. With hundreds of industrial uses, it can be used almost anywhere, as long as the two metals rub under dry conditions. In 2015, Anirudha Sumant and his colleagues at the Nanotechnology Department for the first time demonstrated the super-lubrication (near zero friction) on the engineering scale through the combination of graphene and nano-diamond, thus achieving a breakthrough in solid lubrication technology. This approach is revolutionary, and his team has continued to develop technology since then. Recently, Sumant replaced graphene with molybdenum disulfide to observe the performance of other two-dimensional materials. He hopes that this process is similar to that observed with graphene-nano-diamond lubricants. However, when Diana Berman, the first author of the study, and Dr. Argonne's postdoctoral researcher, did not see nanodiamonds in this material, the team was surprised to find onion-like carbon spheres. Molybdenum disulfide decomposes into molybdenum and sulfur and reacts with nanodiamond to convert it into onion-like carbon. The Argonne team realized that sulfur diffusion is increasing the strain of nanodiamonds, then destroying them and converting them into onion-like carbon. Sankaranarayanan said that this is a new discovery, and their efforts have unleashed another secret about how other two-dimensional materials interact with nanodiamonds. Diamond is one of the special materials in nature, with the highest hardness, low friction coefficient, high elastic modulus, high thermal conductivity, high insulation, wide energy gap, high acoustic propagation rate and good chemical stability, as shown in the following table. Although natural diamonds have these unique properties, they have always existed only in the form of gemstones, and their versatility and rarity greatly limit their applications. The CVD diamond film prepared by Luoyang Yuxin Diamond combines these excellent physical and chemical properties, and the cost is lower than that of natural diamond. It can prepare various geometric shapes and has broad application prospects in the fields of electronics, optics and machinery.
HUATAO HDPE Geocells (also known as Cellular Confinement Systems) are three-dimensional honeycombed cellular structures that form a confinement system when infilled with compacted soil. Extruded from polymeric materials into strips welded together ultrasonically in series, the strips are expanded to form the stiff (and typically textured and perforated) walls of a flexible 3D cellular mattress or slab. Infilled with soil, a new composite entity is created from the cell-soil interactions. The cellular confinement reduces the lateral movement of soil particles, thereby maintaining compaction and forms a stiffened mattress or slab that distributes loads over a wider area.
HDPE Geocell traditionally used in slope protection and earth retention applications, geocells made from advanced polymers are being increasingly adopted for long-term road and rail load support. The result is high earing capacity even from inferior fill material, reduction of structural layer thickness and longer-term durability.
Geocell divide into : plastic geocell, steel reinfored geocell, hot melt integrated type geocell, high strength geocell with lock catch.
Geocell used for the stability of railway roadbed, to stabilize the desert highway roadbed, governance of shallow water channel, the foundation reinforcement of retaining wall,sharf,levee, management of desert, beaches and river banks etc.
HDPE Geocells
HDPE Geocell,High Density Geocell,Polyethylene Geocell,Reinforcement Geocell
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