Ukulungiswa kwe-Laser ye-foam yensimbi

Amagwebu esinyithi ahlelwa ngokwezigabai-open-cell kunye ne-closed-cell foams. Amagwebu eeseli ezivaliweyo aneenwebu ezahlula iiseli ezingabamelwane okanye ii-voids, kanti amagwebu eeseli ezivulekileyo anothungelwano lwee-voids ezisasazwa ngokungacwangciswanga ezidityaniswe njengoko kubonisiwe kwiMifanekiso (a) kunye (b), ngokulandelelanayo. Ukwahlulahlula ngandlel' ithile kubaluleke kakhulu njengoko kwahlula amagwebu esinyithi ngokwezicelo zawo. Amagwebu ensimbi avaliweyo anokuqina okuphezulu kwaye asetyenziswa ikakhulu kwizicelo zesakhiwo. Ngakolunye uhlangothi, i-foams ye-open-cell isetyenziswa kakhulu kwizicelo ezisebenzayo ezifana nokutshintshiselana kobushushu ngenxa yendawo enkulu kunye nesakhiwo sangaphakathi esidibeneyo.

Ke ngoko, iindlela zokucubungula zinoxanduva ikakhuluukwenza ngokwezifiso amagwebu esinyithikwizicelo zabo ngokuchaza ubume be-anatomical okanye ukuhanjiswa kwepore. Iindlela zokucubungula zihlelwe ngokubanzi kwiinkqubo zamanzi kunye neziqinileyo. Ukusetyenzwa kolwelo yeyona nto idumileyo kwimveliso yorhwebo ngenxa yamazinga aphezulu amagwebu kunye nezivuno eziphezulu. Inkqubo idala imingxunya kulwelo okanye kwisinyithi esisiqilima ngeyona ndlela yeendlela ezimbini eziphambili, ukugwebu ngqo nokungathanga ngqo. Ugwebu oluthe ngqo lunokufezwa ngokuzisa igesi (umoya, initrogen, okanye iargon) okanye ngokuzisa izinto ezizisekondari ezifana neTiH2, ZrH2, MgH2, CaCO3, njl. Kuzo zombini ezi meko, amaqamza ayenziwa kumphezulu wokunyibilika kwaye ayabanjwa kwaye apholiswa ukuze enze i-voids.

Xa kusetyenziswa indlela engathanga ngqo yogwebu, isinyithi esinyibilikisiweyo asibi namagwebu ngokuthe ngqo; endaweni yoko, izinto ezandulelayo ezifana namagwebu epolymer okanye amasuntswana angekhoyo kunye neengqukuva ezinoxinano oluphantsi zisetyenziselwa ukuphosa isinyithi esinyibilikisiweyo kwi-foam. Ukusetyenzwa kolwelo, ngelixa kuvunyelwa ukuveliswa kobuninzi beamagwebu esinyithikwifom yephepha, ayinakho ukuzinza kunye nokulawula. Ngenxa yoko, kufutshane neemilo zenetha kunzima ukuvelisa. Ukwahluka kwezinto ezinokuthi zisetyenziswe ukwenza amagwebu ngale ndlela nazo zilinganiselwe kakhulu.

I-Solid-state foaming inokuchazwa njengenkqubo yokwenza amagwebu esinyithi agcina ubushushu bokusebenza ngaphakathi komgangatho wobushushu obunyibilikayo bezinto ezisisiseko. Amagwebu esinyithi alungiswa mhlawumbi ngokuzisa i-agent evuthelayo ngokuthe ngqo kwintsimbi edibeneyo edibeneyo (i-intrinsic porosity) okanye ngokudibanisa i-powder yesinyithi ejikeleze itemplate yesikhashana ephathwe kwangaphambili kunye ne-voids (i-porosity yangaphandle). Nangona iinkqubo zombuso oqinileyo zilawulwa ngokuthembekileyo, zibiza kakhulu. Imizi-mveliso yangoku ibaluleke kakhulu ekukhetheni iimveliso zokwenziwa.

Amagwebu esinyithiluhlobo olutsha lwemathiriyeli ethambileyo ekhaphukhaphu ebandakanya iipores okanye i-voids ngaphakathi kwentsimbi eyomeleleyo. Imibhobho idla ngokudalwa ngaphakathi kwesiseko sezinto ngendlela engalawulekiyo, ilandela iindlela ezahlukeneyo zenkqubo ukwenza ulwakhiwo olunemingxuma olunemingxuma oluphezulu lwesinyithi. Iqhezu lomthamo wee-pores ezibangelwayo liphezulu kakhulu xa kuthelekiswa nezinto ezisisiseko, okwenza izinto zilula. Ukongeza kubunzima bayo obulula, izinto eziphathekayo zibonelela ngoluhlu lwezinye iimpawu ezibalaseleyo zesakhiwo: umlinganiselo ophezulu wamandla-kuya-ubunzima kunye ne-vibration egqwesileyo yokudambisa kunye nokufunxa ingxolo. Ukubandakanya i-foam yensimbi kuyo nayiphi na imboni, kufuneka idibaniswe ngokusondeleyo kunye nenkqubo yokuvelisa ethembekileyo. Izinyithi ezinogwebu ziphawulwa ngokuqina okuphezulu kunye namandla aphantsi okuqina kwaye zithande ukuphuka phantsi komthwalo. Ke ngoko, iinkqubo eziqhelekileyo zokuvelisa azilungele ukusetyenzwa kobume obuqhelekileyo bokwenziwa kwe-foam yensimbi. Ngenxa yoko, ukwamkelwa ngokubanzi kwee-foam zetsimbi kuphazamiseka. Indlela yokucubungula i-laser yindlela esebenzisa umthombo wokushisa ochanekileyo, i-laser, ukucubungula izinto endaweni yomthwalo womatshini.