Forums before death by AOL, social media and spammers... "We can't have nice things"
|    sci.chem    |    Chemistry and related sciences    |    55,615 messages    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
|    Message 54,985 of 55,615    |
|    Treon Verdery to All    |
|    Plastics exposed to light (1/3)    |
|    14 Aug 22 01:45:26    |
      From: treon3verdery@gmail.com              like outdoor light preservative: include light frequency downcoverting       nanocrystals or quantum dots that downconvert all UV to IR, this makes       plastics and paints resistant to uv light including outdoor sun exposure, also       environmentally beneficial        technologies that velocitize polymer disintegration include photonic frequency       upregulating nanocrystals and quantum dots to make waste plastics an order of       magnitude more disintegrating from sun or artificial light.              Very thin cold plasma ptfe nano or micrometer sputter coating causes       resistance to chemical attack and reactive oxygen diffusion, and with surface       patterning from a secondary femtosecond laser can be extremely hydrophobic.       This preserves anything exposed        to moisture like garden hoses and light pipe photon collectors for       concentrator photovoltaics, as well as roofing polymers and polymer siding at       dwellings and other buildings. There are also applications like exterior       building paint, infrastructure paint,        and vehicle paint. Drones with enough electrical power could sputter coat       ptfe onto the surface of any new or previous construction, then use broad area       light casting gratings or holograms to make the ptfe microcoat have grooves or       other features so        they are even more shedding of water and hydrophilic. This makes things last       longer. Nanometer thick sputtered teflon coatings are much cheaper than making       things out of teflon/ptfe. Anti-rust nanocoatings and could also be       made/coated this way, as could        outdoor furniture, and even interior and foundation construction lumber and       drywall. Another use could be preserving historic buildings. Also PTFE is just       one material it could be that laser or magnetron sputtering of amorphous       fullerene glass, 1000        times harder than diamond could, at all these applications, including       buildings and paint, and building materials, provides superior resistance to       being scratched off and thus lasts longer on structures and objects exposed to       wind and rain.              As a different technology, It seems possible, but is unknown to me if a       sputtered polymer coating and the autowetting super hydrophilic laser etch       pattern if applied to concrete/cement surfaces causes greater cement surface       hydration and simultaneously        higher strength and resistance to forming potholes, as well as greater       resistance to cracking in the upper 1-8 mm of cement, such as at urban and       country roads. This would discourage potholes, and discorage spot treated       potholes from growing.              The possibility of much smaller asphalt filler mineral chunks would make       asphalt less porous, so much so that drone treated polymer sputtering and       superhydrophobic laser etching keeps water out of the pothole filler, which       could be raised .5 mm above        surrounding road surface. (With robotic precision) This precludes wet grinding       of the pothole from vehicle tires.               Another way a robot drone could get rid of potholes is to have a supply of       expandable bags, similar to balloons that it can fill with optimized geometry       polymer volume filling shapes, high adhesion nanocement and water. A spike or       drill on the robot does        two things, it places an anchor screw for the pothole filling bag to attach       to, and it provides an empty space water drain. The anchored solidified bag       takes up 90-98% of the pothole, and the rest of the pothole is filled with       ultrasonic compaction of        the perimeter of the fill bag aligns the polymer shapes in the fill       goop/rubber/neoasphalt so they avoid migrating, even under turning car wheels       that torque potholes that have been filled. Optionally a stainless steel top       disk on top of the bag gives        the uppermost surface of the pothole a laser level precision of flatness of       repair. computer simulations to make sure the anchored bag, perimeter fill an       optional top plate doesn't shake apart with cars that travel 1-300MPH. At the       3-7% not filled by the        bag on value effective goops like low density polyethelene microbeads in a       "tar" or rubber matrix with barium sulfate so the pothole repairs are white.              Self driving cars that travel 300MPH during commuting reduce commute times to       1/10-1/5 of a 1990's AD time to commute in the 20 largest US cities, or at       trucks, transporting goods about 6 times faster at 300MPH with self driving       technology. i think self        driving vehicle technology when it is equivalent in safety to 4 times the lack       of vehicular accidents of the upper safest 2% of human drivers is adequate,       and of course even less accidents than that is even more beneficial. The       technology to make 300 MPH        electric cars, i think, exists, and 300 MPH hydrocarbon powered vehicles       already exist.               Bulk laser holographic treatment of plant sourced agricultural Mulch at the       farm, or agribusiness could make it much more hydrophilic or hydrophobic,       beneficially effecting water retention and supporting anti-plant-disease       microbiological communities. As        a technology this is as simple as 11 watts of $1/watt alibaba laser power       shone through a hologram directed at the interior of a plant mulch tumbling       drug, if the laser etch lines reach 90% of the tumbled mulch, then that's       likely enough to make a good        soil hydrophilicity profile.                      [continued in next message]              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]
(c) 1994, bbs@darkrealms.ca