https://newatlas.com/materials/self-densified-wood/
"Ein Team der Chinas Nanjing University hat sich kürzlich durch die Entwicklung des neuen Prozesses an diesem Mangel angeregt.
Es beginnt mit dem Kochen eines Holzblocks in einer Mischung aus Natriumhydroxid (Lauge) und Natriumsulfit, wodurch etwas von Lignin entfernt wird. Dieser Block wird dann in eine beheizte Mischung aus Lithiumchloridsalz und einem Lösungsmittel, das als Dimethylacetamid bekannt ist, eingetaucht. Dies führt dazu, dass sich die Cellulose (und das verbleibende Lignin) anschwillt und nach innen expandiert, um das Lumen zu füllen.
In einem letzten Schritt bleibt das verarbeitete Holz 10 Stunden lang bei Raumtemperatur lufttrocknen. Dabei schrumpft es gleichmäßig von allen Seiten nach innen, behält aber seine ursprüngliche Länge bei."
Wood is 4 times stronger after new self-densified method
byu/Booty_PIunderer inFuturology
7 Kommentare
I think this will solve the shrinking and expanding of my wooden doors and windows, which basically creates a lot of gaps and tightness depending on seasons.
What kind of wood will this work? Because teak when it’s fully cured, it doesn’t expand or shrink. But for example neem wood, nothing matters, it will keep shrinking and expanding every year.
Are any of these chemicals cancer-causing, classified as „forever chemicals“, or involve either of these types in the production process.
I don’t think the problem with wood is the strength. It’s the permeability. which the nords have done amazing things with their „pickling process“ and another „heat modified wood.“ Woods like Accoya, Kebony, lunawood. The most efficient means of creating structural members is to use a LSL or LVL method of shredding into wood shards and pressing them with a wood glue. LSL’s are around 5 times stronger than typically wood studs and is a much more efficient use of the raw material.
Seems like china has really taken over as the leader in technological progression lately since the USA is too busy speedrunning total collapse
NileRed had a video discussing sorta on the same lines as this, but the paper he followed required pressing the wood and allowing it to dry: [https://www.youtube.com/watch?v=CglNRNrMFGM](https://www.youtube.com/watch?v=CglNRNrMFGM)
> . As it does so, it uniformly shrinks inwards from all sides, but maintains its original length.“
Shrinks from the longest side while maintaining length? The technology has become truly impressive
Does this mean home Depot and Lowe’s board will be straighter?