Hunhu hwezvinhu zvesilicone

Hunhu hwezvinhu zvesilicone

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1. Kusviba
Tsananguro yemashoko esainzi netekinoroji: Hunhu hwehuwandu hwezvinhu zvine mvura, pseudo-liquid kana pseudo-solid matter zvinopesana nekuyerera, kureva, kukweshana kwemukati kana kuramba kwemukati kwekuyerera pakati pemamorekuru kana ichiyerera pasi pesimba rekunze. Mumamiriro ezvinhu akajairwa, viscosity inoenderana zvakananga nekuomarara.

2. Kuoma
Kugona kwechigadzirwa kudzivirira zvinhu zvakaoma zvakamanikidzwa pamusoro pacho kunonzi kuomarara. Rabha yeSilicone ine huremu hwekuomarara hweShore hwe10 kusvika 80, izvo zvinopa vagadziri rusununguko rwakazara rwekusarudza kuomarara kunodiwa kuti vawane mabasa chaiwo. Mhando dzakasiyana dzehuomarara hwepakati dzinogona kuwanikwa nekusanganisa polymer substrates, fillers uye zvinowedzera muzvikamu zvakasiyana. Saizvozvowo, nguva netembiricha yekupisa nekugadzika zvinogonawo kuchinja kuomarara pasina kuparadza humwe hunhu hwemuviri.

3. Simba rekusimba
Simba rekudhonza rinoreva simba rinodiwa muchikamu chega chega cherabha kuti ribve. Simba rekudhonza rerabha rakasimba resilicone rakagadzirwa nekupisa riri pakati pe4.0-12.5MPa. Simba rekudhonza rerabha refluorosilicone riri pakati pe8.7-12.1MPa. Simba rekudhonza rerabha rakagadzirwa nesilicone rakagadzirwa nemvura riri pakati pe3.6-11.0MPa.

China, simba rekubvarura
Kudzivirira kunotadzisa kukura kwekucheka kana kukora kana simba rakaiswa pamuenzaniso wakachekwa. Kunyangwe kana ukaiswa pasi pekumanikidzwa kwakanyanya mushure mekucheka, rabha resilicone rakasimba rakapiswa nekupisa harigone kubvaruka. Simba rekubuda kwerabha resilicone rakasimba rakapiswa nekupisa riri pakati pe9-55 kN/m. Simba rekubuda kwerabha refluorosilicone rakasimba riri pakati pe17.5-46.4 kN/m. Simba rekubuda kwerabha resilicone rakasimba rinotangira pa11.5-52 kN/m.

5. Kureba
Kazhinji zvinoreva "Ultimate Break Elongation" kana kuwedzera kwehuwandu hwerurefu rwepakutanga kana sampuro yapwanyika. Rubha rakasimba resilicone rakaputirwa neThermally vulcanized rinowanzova nerefu riri pakati pe90 kusvika 1120%. Kureba kwerubha ra fluorosilicone kuri pakati pe159 ne699%. Kureba kwerubha ra silicone remvura kuri pakati pe220 ne900%. Nzira dzakasiyana dzekugadzirisa uye sarudzo ye hardener zvinogona kuchinja zvakanyanya kureba kwayo. Kureba kwerubha ra silicone kune chekuita nekupisa.

6, nguva yekushanda
Nguva yekushanda inoverengwa kubva panguva iyo colloid inowedzerwa kune vulcanizing agent. Hapana muganho wakakwana pakati penguva iyi yekushanda nenguva inotevera ye vulcanization. Colloid yave ne vulcanization reaction kubva panguva iyo vulcanizing agent inowedzerwa. Nguva iyi yekushanda inoreva kuti vulcanization reaction yemaminitsi makumi matatu yechigadzirwa hachikanganisi mhando yechigadzirwa chapera. Saka, nguva yakawanda inochengetwa mukushanda kwechigadzirwa, inobatsira zvikuru chigadzirwa chapera.

7, nguva yekuzorora
Dzimwe nzvimbo dzinoti yava nguva yekupora. Nemamwe mashoko, maitiro ekugadzira silica gel anopera mushure menguva yakareba kudaro. Izvi zvinopera, zvinoreva kuti chigadzirwa chacho chatovepo, asi kutaura chokwadi kuchine chikamu chidiki chemaitiro ekupisa chisati chapera. Saka, zvigadzirwa zvakagadzirwa nesilicone rabha, zvakaita sesilicone molds, zvinowanzotora nguva isati yashandiswa.
Silica gel (Silica gel; Silica) zita rekuti: Silica gel chinhu chinoshanda zvikuru pakunyungudutsa mvura, chiri chinhu chisina chimiro. Fomura yayo yemakemikari ndi mSiO2·nH2O; haisangani nechero chinhu kunze kwealkali yakasimba uye hydrofluoric acid. Hainyungudike mumvura uye chero zvinonyungudutsa, haina chepfu, haina kunaka, uye inogara kwenguva refu mumakemikari. Mhando dzakasiyana dzesilica gel dzinoumba maumbirwo akasiyana-siyana ema microporous nekuda kwenzira dzavo dzakasiyana dzekugadzira. Kuumbwa kwemakemikari uye chimiro chemuviri chesilica gel zvinoratidza kuti ine zvimwe zvinhu zvakafanana zvakaoma kutsiva: kushanda kwakanyanya kwekunyungudutsa mvura, kugadzikana kwakanaka kwekupisa, hunhu hwakasimba hwemakemikari, uye simba rakawanda remakanika. Zvichienderana nehukuru hwepore rayo, silica gel yakakamurwa kuita: macroporous silica gel, coarse pore silica gel, B-type silica gel, fine pore silica gel, nezvimwewo.

Mutengo wezvinhu zvesilicone pari zvino hauna kugadzikana, unokwira zuva nezuva, zvinotiomera kuziva mutengo. Tinongokwanisa chete kugadzirazviumbwa zvesiliconezvino.


Nguva yekutumira: Gunyana-27-2021