Txhua tus muaj nws tus kheej qhov zoo! Koj puas paub qhov txawv ntawm tus neeg sawv cev sib txuas, tus neeg sawv cev sib txuas thiab tus neeg sib xws?

Qhov sib txawv ntawm tus neeg sawv cev sib txuas thiab tus neeg sawv cev sib txuas:

Cov neeg sawv cev sib txuas feem ntau yog hais txog ib pawg tshuaj uas koom nrog hauv kev sib txuas ntawm cov resins los txuas cov pab pawg ua haujlwm hauv cov resin los tsim cov qauv network. Tus neeg sawv cev sib txuas feem ntau tuaj yeem txhim kho qhov viscosity thiab elasticity ntawm cov kua dej ua haujlwm. Tib lub sijhawm, nws kuj yuav tsum muaj qee yam kub thiab ntsev tiv taus cov khoom raws li cov yam ntxwv geological ntawm lub pas dej. Tsis tas li ntawd, qee cov khoom ntxiv yuav raug ntxiv los txhim kho kev ua haujlwm tag nrho ntawm cov kua dej ua haujlwm.

Cov neeg sawv cev sib txuas feem ntau yog hais txog cov tshuaj me me uas muaj 3 lossis ntau dua cov pa roj carbon hydrolyzable. Kev siv me me tuaj yeem txhim kho qhov kev sib txuas ntawm cov khoom siv organic thiab inorganic, thiab cov tshuaj hydrolyzable thiab carbon reactivity. Cov pab pawg no tuaj yeem kho rau ntawm qhov chaw ntawm txhua yam khoom siv organic, uas yog hais tias, nws tuaj yeem tsim tus choj ntawm cov resin thiab qhov sib txuas, ua rau kom muaj kev sib txuas ntawm cov txheej thiab cov nplaum, thiab siv tsawg dua.

Qhov sib txawv ntawm ob qho no tsis loj heev, thiab tus neeg sawv cev sib txuas yog ib chav kawm ntawm cov tshuaj uas muaj ob pawg ua haujlwm ntawm cov khoom sib txawv. Qee pawg ua haujlwm hauv lawv cov molecules tuaj yeem cuam tshuam nrog dej adsorbed lossis hydroxyl pawg ntawm qhov chaw ntawm cov tshuaj inorganic, thiab qee pawg ua haujlwm tuaj yeem cuam tshuam nrog cov organic molecules los tsim cov ntawv cog lus lossis kev sib txuas. Muaj qhov sib txawv me ntsis ntawm cov neeg sawv cev sib txuas thiab cov neeg sawv cev txuas, ob qho tib si tuaj yeem ua rau cov molecules linear sib txuas ua ke rau hauv cov qauv network.

Cov neeg sawv cev sib txuas feem ntau yog siv rau hauvcov ntaub ntawv polymer, vim tias cov qauv molecular ntawm cov ntaub ntawv polymer zoo li ib txoj kab ntev. Yog tsis muaj kev sib txuas, lub zog qis, nws yooj yim tawg, thiab tsis muaj elasticity. Lub luag haujlwm ntawm tus neeg sawv cev sib txuas yog linear. Cov tshuaj sib txuas yog tsim ntawm cov molecules, yog li cov molecules linear txuas nrog ib leeg los tsim cov qauv network, uas txhim kho lub zog thiab elasticity ntawm cov roj hmab. Tus neeg sawv cev sib txuas siv hauv cov roj hmab feem ntau yog sulfur, thiab lub accelerator ntxiv.

Qhov txawv ntawm coupling agent thiab compatibilizer:

Hauv kev nkag siab, ob qho tib si yog surfactants nrog kev siv sib txawv.

1. Tus neeg sawv cev sib txuas feem ntau yog siv ntawm cov inorganic thiab organic, lub luag haujlwm tseem ceeb yog los txhim kho qhov sib xws ntawm cov khoom siv thiab cov khoom siv molecular, kev sib kis siab ntawm cov khoom siv hauv cov khoom siv, xws li silane thiab titanate coupling agent;

2. Tus compatibilizer yog siv los txhim kho qhov sib xws ntawm cov polymers sib xyaw, uas yog, qhov sib xws ntawm ob hom resins sib txawv hauv cov polymer alloy feem ntau yog polyolefin grafted maleic anhydride tsim los ntawm reactive extrusion. GMA thiab lwm yam reactive grafts, nrog rau cov polymers polar hluavtaws.

Lub sijhawm siv tau ntawm tus neeg sawv cev txuas:

Ib puag ncig uas siv tus neeg sawv cev txuas xws li av noo, lub sijhawm khaws cia, kua mem thiab txheej txheej thiab pH tus nqi, thiab lwm yam. Feem ntau titanates thiab silanes yog alkaline tsis muaj zog, thiab decompose rau hauv cawv los ntawm hydrophilicity. Lawv cov nyhuv tsis zoo hauv lub caij ntub thiab los nag hauv sab qab teb, thiab nws siv sijhawm ntev dua kom qhuav hauv sab qaum teb. Nws tseem tsim nyog los xyuas seb qhov sib tshuam tsuag puas yog acidic lossis acidic. Feem ntau Tsis muaj dab tsi ntau tshaj peb series ntawm KH (silane), A (titanate) thiab N (azo), uas yog reactive rau dej, cawv, ether, ammonia, amine thiab acid thiab poob lub peev xwm txuas tom qab reaction. Rau kev khaws cia ntev, yuav tsum tau them sai sai rau kev zam oxygen thiab kuaj xyuas ntau zaus.