Ku pimanisiwa ka Ku Pakanisa ka Tindlela to Kambela Digiri ya Ku Horisa eka Swinamarheti leswi nga na Ntshikelelo wa Silicone (Ndlela yo Humesa Solvent, Ndlela ya DSC na Ndlela ya FTIR)

Nxopaxopo wo pimanisa wa Tindlela to Kambela Digiri ya ku Horisa ta Swinamarheti leswi nga na Ntshikelelo wa Silicone hi Jiangsu PTFE Vaendli va Malapi ya Mahiselo ya le Henhla

(Ndlela yo Humesa Solvent, Ndlela ya DSC & Ndlela ya FTIR)

I. Misinya ya Misinya ya Mimpimo na Ku Hambana ka Nkoka

1. Ndlela yo Humesa Solvent

Ndlela leyi yi pima nhlayo ya gel. Tisampulu ti humesiwa hiku phindha-phindha hi solvent ya kahle; timolekhuli leti nga hlanganisiwangiki ti n’oka ti huma. Masalela lawa ya omisiweke ya pimiwa ku hlayela xiphemu xa vukulu bya swilo leswinga khulukiki, leswi kombisaka xiphemu xa xivumbeko xa macro insoluble network.

2. Ndlela ya DSC

Ndlela leyi yi pima residual reaction heat. Ku humesiwa hinkwako ka kuhisa ka tisampulu letinga horiwangiki (ΔHtotal) na ku humesiwa ka kuhisa loku saleke ka tisampulu ta xikambelo (ΔHresidual) swi pimiwa hiku landzelelana. Digiri ya ku horisa: α=1−ΔHresidual/ΔHtotal Yi hlamusela xiphemu xa mintlawa ya ntirho ya residual reactive.

3. Ndlela ya FTIR ya Spectroscopy

Endlelo leri ri langutisisa ku tirhisiwa ka mintlawa ya ntirho wa swihlawulekisi. Eka tisisiteme ta hydrosilylation, ku hambana ka ndzhawu ya nhlohlorhi ya Si-H (≈2160 cm−⊃1;) kumbe Si-Vi (≈1595 cm−⊃1;) swa landzelerisiwa. Nhlohlorhi ya standard yale ndzeni (xikombiso, Si-CH3 eka ≈1260 cm−⊃1;) yi amukeriwile kuva yiva normalization, hiku kongoma yi humesa mpimo wa ku hundzuka ka ti chemical bonds tokarhi.

II. Ku pimanisiwa ka ku pakanisa na Swihoxo leswikulu

1. Ndlela yo Humesa Solvent

Swiphemu swa ti chain leswinga endlangiki leswi khomiweke hi physical entanglement na topological locking swi tiviwa hi xihoxo tani hi 'crosslinked structure', leswi yisaka eka systematic overestimation ya chemical curing degree. Handle ka sweswo, mbuyelo wa swikambelo wu khumbeka hiku tirha kahle ka dissolution, ku lahlekeriwa hi microgel xikan’we naku cinca cinca ka swiyimo swa ntirho, hiku kongoma ka ±2–5% ntsena.

2. Ndlela ya DSC

Yi tisa ku pakanisa ka le henhla swinene eka mimpimo ya le hansi ku ya eka ya le xikarhi ya ku hundzuka. Hambiswiritano, eka ti degree tale henhla ta curing, mintlawa ya ntirho leyi saleke ayi koti ku angula hiku hetiseka hikokwalaho ka diffusion limitation, leswi endlaka leswaku kuva na ku humesiwa ka kuhisa loku pimiweke kale hansi xikan’we naku ringanyetiwa ngopfu ngopfu ka curing degree. Swihoxo swo engetela swi huma eka ku hlawuriwa ka masungulo, ku angula ka le tlhelo na ku kumiwa ka ΔHtotal. Ku phindha-phindha ka yona swikahle (<±2%).

3. Ndlela ya FTIR

Yi languta hiku kongoma ku hundzuka ka ti khemikhali ta bond naswona yi tinyungubyisa hi ku ringanana lokukulu swinene na ku hundzuka ka xiviri ka tikhemikhali. Swihoxo leswikulu swi huma eka ku hlangana ka nhlohlorhi (xikombiso, ku kavanyetiwa ka mpfula ya mati eka swikombiso swa Si-H). Mode ya ATR yi kuma ntsena swiphemu swa le henhla; data ya xikambelo yi ta soholotiwile loko ku fana ka ku horisa ku hambana exikarhi ka le henhla na le ndzeni. Ku pima swi fambisana na Nawu wa Lambert-Beer naswona swititshege hi tisampulu ta reference letinga horiwangiki. Yi kombisa vukheta byale henhla bya kwalomu ka ±1–3%.

III. Xiyimo xa ku Pakanisa lexi heleleke

Judged by the actual conversion degree of chemical bonds , ntlhandlamano wa ku pakanisa i: Ndlela ya FTIR > Ndlela ya DSC (nhlayo ya ku hundzuka ya le hansi ku ya eka ya le xikarhi) > Ndlela yo Humesa Solvent

Ndlela yo Humesa Solvent  Ku pakanisa ka le hansi swinene. Mimpimo ya swikambelo yi tlakukile hikokwalaho ka ku hoxa xandla ka nyama naswona yi kombisa ku yelana loku nga riki kahle swinene na xiyimo xa crosslinking ya tikhemikhali. Hambi swi ri tano, mbuyelo wa yona wu le kusuhi swinene na matirhelo ya vukorhokeri lebyi tirhaka eka switirhisiwa swa tiindasitiri.

Ndlela ya DSC  Ya tshembeka no lulamile ehansi ka mimpimo ya ku hundzuka ya le hansi ku ya eka ya le xikarhi. Yi nga ha humesa ku hlayiwa ka degree ya le henhla ya ku horisa hi mavunwa endzeni ka tindzhawu leti lawuriwaka hi ku hangalaka, hikokwalaho a yi fanelanga ku tirhisiwa hi ku tiyimela ku kambela tisisiteme leti horisiweke swinene.

Ndlela ya FTIR  Ku pakanisa ka le henhla, loku kotaka ku hambanyisa kahle ku hundzuriwa ka tikhemikhali, ngopfungopfu ku faneleka ku hambanyisa ehansi ka mimpimo ya ku hundzuka ya le xikarhi ku ya eka ya le henhla.

IV. Switsundzuxo swa Ku Tirhisa Leswi Tirhaka

Ndlela yo Humesa Solvent  Yi lulamerile eka ku kamberiwa ka khwalithi ku hatlisa ku tiyisisa loko nhlayo ya gel yi fikelela swilaveko swa vukorhokeri. Ku hlayiwa ka yona a ku fanelanga ku ringanisiwa hi ku kongoma na ku tsindziyela ka crosslink ya tikhemikhali.

Ndlela ya DSC  Yi tirha eka ndzavisiso wa reaction kinetics na ku vekiwa tihlo ka maendlelo. Ku ta nyikiwa nyingiso eka ku hambuka ka mpimo eka switeji swa le henhla swa ku hundzuka. Ku kamberiwa ka nhlanganelo hi Ndlela ya FTIR swa hlohleteriwa.

Ndlela ya FTIR  Ndlela leyi tsakeriwaka ya calibration eka R&D hi vaendli va malapi ya mahiselo yale henhla ya Jiangsu PTFE. Yi nga simeka hi ku kongoma swipimelo swa mimpimo ya ku cinca ka tikhemikhali eka nhluvukiso wa fomula na ku antswisiwa ka maendlelo. Loko yi hlanganisiwa na ku kamberiwa ka DSC, yi nyika vuxokoxoko byo tatisela eka ku kula ka ku horisa.

Vuxokoxoko lebyi nga laha henhla byi nyikiwile hi Jiangsu Aokai Thekinoloji ya Switirhisiwa Leswintshwa Co., Ltd.

Loko u lava ku dyondza swihlawulekisi leswi nga na vuxokoxoko byo tala, swiyimo swa xikombelo na swintshuxo leswi endleriweke switirhisiwa swa xiyimo xa le henhla ku katsa na malapi ya mahiselo ya le henhla ya PTFE, tithepi to namarhela ta mahiselo ya le henhla ya PTFE, mabandhi ya mesh ya mahiselo ya le henhla ya PTFE, mabandhi ya muchini wo fusa lama nga riki na swirhabyani, malapi ya PTFE ya tlhelo rin’we, mabandhi ya conveyor lama lwisanaka na mahiselo ya le henhla na mahiselo ya le henhla malapi ya fiberglass leyi nga tiyisekiki, hi kombela u hi tihlanganisa hi tindlela leti nga laha hansi:

Tilayini ta Vukorhokeri:

Tatana Guo: +86 18944819998

Tatana Liu: +86 13705266308

Hi ku namarhela filosofi ya vukorhokeri bya xiphurofexinali na vutshembeki, hi tinyiketerile ku ku nyika swintshuxo swa xiyimo xin’we na vukorhokeri lebyi ehleketiweke!