Ndezvipi zvinhu zvinokanganisa kuita kwe lightweight thermal insulation zvidhinha?

Zvidhinha zvakareruka zvekupisa zvinopisa zvine chimiro chakaomarara uye hutsinye hwekushanda nharaunda, uye zvinhu zvakawanda zvinokanganisa maitiro avo ekupisa. Uyezve, zvinhu zvakasiyana zvinopesvedzera mumwe nemumwe uye zvine hukama kune mumwe nemumwe, zvichiita kuti ongororo uye tsvagiridzo iome kuita. Nekudaro, pakati pezvakawanda zvinopesvedzera zvinhu, kuumbwa kwezvinhu uye chimiro, kupenya kwemhepo uye kupera kwemhepo, kuwanda kwehuwandu uye tembiricha ye lightweight thermal insulation zvidhinha ndizvo zvinhu zvikuru.

Kuumbwa kwezvinhu uye chimiro Iyo kemikari yemaminerari ekuumbwa uye crystalline chimiro chezvinyorwa ndizvo zvekutanga zvinhu zvinokanganisa conductivity yekupisa kwezvidhinha zvisinganzwisisiki. Kazhinji kutaura, iyo yakanyanya kuomarara chimiro chekristaro chechidhinha chekudzivirira, chinodzikisira kupisa kwayo. Chikamu chakasimba chechinhu chinogona kungopatsanurwa kuita chikamu checrystalline uye chikamu chegirazi. Nekuda kwekudedera nekudhumhana, maatomu (maoni) anotamisa kinetic simba kubva kumaatomu (maoni) ane simba repamusoro rekinetic kuenda kune mamwe maatomu (maioni) ane simba rezasi rekinetic, uye maatomu (maion) ari muchikamu chegirazi anorongwa nenzira isina kurongeka, saka Kupikisa kunowanikwa panguva yekufamba kwakakwirira kudarika kurongeka kwakarongeka kwekristal phases. Nokudaro, iyo inopisa conductivity yegirazi chikamu yakaderera pane iyo yekristallline phase. Nekudaro, mushure mekunge tembiricha yakwira kusvika kune imwe nhanho, viscosity yegirazi chikamu inoderera, kushorwa kwekufamba kwemaatomu (ion) kunoderera, uye kupisa kwekushisa kwechikamu chegirazi kunowedzera. Asi chikamu checrystalline chakapesana. Kana kutonhora kuchikwira, simba rekinetic reatomu (ions) rinowedzera uye kudengenyeka kunowedzera, kuitira kuti nzira yakasununguka inopfupiswa uye kupisa kwemhepo kunoderera. Muchigadziro chemukati chechiedza chekudzivirira zvidhinha, chikamu chakasimba chinoparadzaniswa nemapores akawanda ehukuru hwakasiyana, uye kuenderera mberi kwakasimba kwekufambisa kwechikamu hakugoni kuumbwa maererano nekupisa. Gasi nhanho yekupisa kuchinjisa inotsiva yakawanda yakasimba chikamu chekupisa kupisa, saka kupisa conduction Iyo coefficient yakadzikira.

Iyo porosity uye porosity ye refractories ine pore maitiro anopesana neiyo thermal conductivity coefficient, uye thermal conductivity coefficient inokwira mutsara nekuwedzera kweporosity. Panguva ino, kushanda kwezvidhinha zvisingaremi zvekudzivirira kunonyanya kuoneka. Asi kana iyo porosity yakafanana, iyo idiki saizi yepore, iyo yakawanda yunifomu kugovera, uye yakaderera iyo thermal conductivity. Mukati maduku maduku, mhepo iri mumapuranga inonyungudutswa zvachose mumadziro epore, iyo inopisa conductivity mumapores inoderedzwa, uye kupisa kwemhepo mu pores kunoderedzwa. Zvisinei, sezvo saizi yegomba remhepo inowedzera, kupisa kwemwaranzi pamadziro emukati megomba remhepo uye convective kupisa kutapurirana kwemhepo mugomba remhepo kunowedzera, uye thermal conductivity inowedzerawo. Maererano nemabhuku akakodzera, kana kupisa kwemwaranzi kuri kudiki kwazvo, kunyanya kana marefu mapores akaumbwa munzira yejet, madiki pores anowanzo buritsa kupisa nemwaranzi mhedzisiro. Dzimwe nguva, kupisa kwekushisa kwechigadzirwa chimwe chete chepore kwakakwirira kudarika kwechigadzirwa chine pores. Chiitiko chekupisa. Iyo yekupisa conductivity yekuvhara pores idiki pane iyo yakavhurika pores.

Kupisa kwekushisa kwezvidhinha zvekupisa kwemafuta ane chiedza chakareruka chine hukama hwemutsara nehukuru hukuru, kureva kuti, sezvo huwandu hwehuwandu hunowedzera, kupisa kwekushisa kunowedzerawo. Iyo vhoriyamu density inotaridza zvakananga mukati porosity yeiyo lightweight insulation zvidhinha. Iyo yakaderera yakawanda density inoratidza kuti kune akawanda ma pores mukati mechigadzirwa, nzvimbo dzekubatana pakati pezvimedu zvakasimba zvinodzikiswa, iyo yakasimba chikamu chekupisa conduction inoderedzwa, uye kupisa kwekushisa kunoderedzwa.

Kupisa kwekushisa kwechiedza-kupisa kupisa kwezvidhinha kune hukama hwemutsara nekushisa, kureva kuti, kupisa kwekushisa kunowedzera nekuwedzera kwekushisa. Kuenzaniswa ne dense refractory zvinhu, thermal conductivity ye lightweight insulation zvidhinha inoderera nekuwedzera tembiricha. Chikonzero ndechekuti dense refractory zvinhu zvinonyanya kuitisa kupisa muchikamu chakasimba. Kana kutonhora kuchikwira, kufamba kwekupisa kwemamorekuru echigadzirwa kunowedzera, uye kupisa kwekushisa kunowedzera. Chimiro chezvidhinha zvisingaremi zvekudzivirira zvinotongwa negasi chikamu (65 ~ 78%). Kana kutonhora kuchikwira, kuchinja kwekushisa kwekushisa kunogara kuduku kudarika kwechikamu chakasimba.