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Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium. [1] The two main dry lubricants are graphite and molybdenum disulfide. They offer lubrication at temperatures higher than liquid and oil ...
Graphite and graphite powder are valued in industrial applications for their self-lubricating and dry lubricating properties. However, the use of graphite is limited by its tendency to facilitate pitting corrosion in some stainless steel, [31] [32] and to promote galvanic corrosion between dissimilar metals (due to its electrical conductivity ...
Under extreme pressures, PTFE powder or solids is of little value as it is soft and flows away from the area of contact. Ceramic or metal or alloy lubricants must be used then. [7] Inorganic solids: Graphite, hexagonal boron nitride, molybdenum disulfide and tungsten disulfide are examples of solid lubricants. Some retain their lubricity to ...
A lubricant, aka lube, is a liquid, made of silicone, water, or oil, used during sexual activity to reduce friction by making the genital skin feel smoother, either solo or with a partner, says ...
A tube of commercial graphite powder lubricant with molybdenum disulfide additive (called "molybdenum") [33] Due to weak van der Waals interactions between the sheets of sulfide atoms, MoS 2 has a low coefficient of friction. MoS 2 in particle sizes in the range of 1–100 μm is a common dry lubricant. [34]
The hexagonal form corresponding to graphite is the most stable and soft among BN polymorphs, and is therefore used as a lubricant and an additive to cosmetic products. The cubic ( zincblende aka sphalerite structure ) variety analogous to diamond is called c-BN; it is softer than diamond, but its thermal and chemical stability is superior.
The manufacturer states on Krytox tubes, "May cause mild skin and eye irritation. Contact with very hot surfaces (above 500°F/260°C) can generate fumes which can cause coughing or respiratory irritation. Large amounts could lead to lung damage which might not be apparent for several hours. These fumes may also cause flu-like symptoms." [7] [8]
The skin is a much stronger barrier and is less sensitive to chemicals in aloe vera products designed for sunburn that, if used as lube, could disrupt the vaginal microbiome, he says.
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