Cov lus qhia tshiab thiab cov yam ntxwv ntawm Adhesives (2)

Cov lus qhia tshiab thiab cov yam ntxwv ntawm Adhesives (2)

1. 1. Kub tsis kam

Inorganic high temperature adhesives feem ntau yog siv nyob rau hauv thaj tsam ntawm 1500 - 1750 ℃, thaum tooj liab phosphate oxide adhesives muaj qhov dav dua qhov kub thiab txias thiab tuaj yeem siv nyob rau hauv thaj tsam ntawm 180 - 1400 ℃. Txawm li cas los xij, lub ntsiab aggregates siv nyob rau hauv inorganic kub adhesives yog zircon xuab zeb thiab refractory av. Zircon xuab zeb yog tus nqi kim heev thiab feem ntau tso siab rau kev xa tawm, thiab cov av refractory yuav tsum tau txais ntawm cov nqi av, uas yog tus nqi loj heev. Yog li ntawd, nws yog ib qho tseem ceeb kom nrhiav tau cov khoom pheej yig thiab yooj yim los hloov cov tsoos aggregates los txo cov nqi tsim khoom. Qee cov organic adhesives kuj tau ua tiav qhov kub thiab txias los ntawm kev hloov kho. Piv txwv li, phenolic resin kua nplaum hloov nrog B4C tuaj yeem tiv taus qhov kub thiab txias ntawm 1500 ℃. Kev lag luam xav tau rau cov cua sov - resistant adhesives yog tas li loj hlob, yog li no hom ntawm cov nplaum muaj dav kev loj hlob zeem muag.

2. 2. Cov pa phem tsawg

Raws li lub ntiaj teb ib puag ncig deteriorates, tib neeg tau maj mam pib siv qee cov khoom lag luam zoo ib puag ncig. Txawm hais tias adhesives tsis yog ib pawg loj ntawm cov khoom siv tshuaj, lawv qhov kev puas tsuaj rau ib puag ncig tsis tuaj yeem tsis quav ntsej. Cov uas tsis yog ib puag ncig tus phooj ywg adhesives yuav maj mam muab tso tseg. Polyethylene formaldehyde nplaum (feem ntau hu ua "107 kua nplaum") muaj cov dawb formaldehyde, uas ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv. Nws tau ntev tau txwv nyob rau hauv cov teb chaws tsim, tab sis nyob rau hauv kuv lub teb chaws, vim nws cov nqi qis, nws tseem muaj feem ntau ntawm kev ua lag luam. Txawm li cas los xij, nws qhov kev siv tau maj mam txo qis thiab yuav sai sai tshem tawm tag nrho. Yuav ua li cas hloov cov tsis yog ib puag ncig tus phooj ywg adhesives rau hauv ib puag ncig tus phooj ywg adhesives yog ib qho tseem ceeb ua hauj lwm.

3. 3. Tsis yog-kev sib raug zoo

Cov txheej txheem tseem ceeb ntawm kev sib txuas cov ntaub ntawv suav nrog bolting, riveting, vuam thiab kev sib txuas. Txawm hais tias bolting thiab lwm yam thev naus laus zis tuaj yeem ua tiav kev sib txuas ceev, lawv yuav ua rau cov khoom puas vim hollowing tawm los yog cov cua sov hauv zos ntawm cov khoom siv, thiab kev ntxhov siab tsis tuaj yeem zam thaum siv. Hauv qhov sib piv, kev sib txuas thev naus laus zis yog qhov tsis muaj kev sib txuas thev naus laus zis, thiab vim tias kev sib txuas lus sib txuas ua lub luag haujlwm tag nrho, nws txhim kho lub peev xwm thauj khoom thiab ua rau lub neej ua haujlwm ntev.

4. Lub teeb yuag

Qhov ntom ntawm cov nplaum yog qhov tsawg, feem ntau ntawm 0.9 thiab 2, uas yog kwv yees li 20% mus rau 25% ntawm qhov ntom ntawm cov hlau los yog cov khoom siv inorganic, yog li nws tuaj yeem txo qhov hnyav ntawm cov khoom sib txuas ntawm cov khoom siv.