Cov ntaub ntawv silicone yog mas tsim ntawm plaub pawg: silicone roj, silicone roj hmab, silicone cob thiab silane txuas tus neeg sawv cev. Tsev cog khoom vulcanized silicone sealant (silicone roj hmab) yog qhov loj tshaj plaws thiab siv ntau tshaj plaws ntawm cov khoom siv silicone. Cov ntawv sau hauv cov roj hmab silicone feem ntau yog cov xim dawb carbon dawb, calcium carbonate, thiab lwm yam. Cov haujlwm ua haujlwm ntawm cov khoom muab tub lim muaj qhov cuam tshuam tseem ceeb ntawm silicone roj hmab. Cia peb tham luv luv txog calcium carbonate ua tus muab tub lim nyob rau hauv daim ntawv thov ntawm cov roj hmab silicone, uas yuav ua rau muaj qee qhov teeb meem.
Cuam tshuam ntawm kev ya raws ntawm kev ua thiab zoo ntawm cov roj hmab silicone: Cov dej noo ntawm nano calcium carbonate cov khoom lag luam siab dhau lawm, uas ua rau muaj ntau pawg hydroxyl nyob rau saum npoo ntawm calcium carbonate hais, tsim txoj kev sib txuas peb lub ntsej muag nyob hauv qab qhov kev ua kua polysilane, uas ua rau cov roj hmab nplaum.
Cov nyhuv ntawm qhov loj ntawm qhov loj ntawm thixotropy ntawm silicone roj hmab: Raws li qhov me me qhov loj me ntawm calcium carbonate tsawg dua, cov viscosity ntawm lub zog nce. Raws li cov shear ceev nce, qhov viscosity poob qis dua thiab thixotropy zoo dua; Kev tswj ntawm particle inch thiab secondary particle inch kuj muaj lub zog tseem ceeb. Raws li cov thawj particle lub cheeb txo, qhov tshwj xeeb cheeb tsam thaj chaw thiab lub zog tshwj xeeb saum npoo nce. Qhov nce hauv qhov loj me ua rau nws nyuaj rau tawg thiab depolymerize, uas yuav ua rau pom tseeb loj ntawm qhov chaw ntawm cov khoom siv roj hmab silicone, lossis teeb meem xws li" pitted nto" thiab" matte nto" ;. Yog li no, cov khoom siv tswj kev tswj hwm carbonization feem ntau xaiv ntawm 40-60nm lossis 60-80nm Ob hom.
Cov nyhuv ntawm kev ua tsis tiav lossis ntau dhau nano-calcium carbonate nto kev kho mob ntawm cov kua nplaum silicone: qhov saum npoo ntawm calcium carbonate cov khoom pov thawj nthuav tawm lub thauv daj, hydrophilic interface, thaum lub kua nplaum silicone yog qhov tsis muaj polar organic tshuaj, thiab ob yog qhov nyuaj kom sib raug zoo thiab ua rau kev tawg yooj yim Kev ua kom tiav cov kev kho tsis zoo ntawm nano-calcium carbonate ntawm ib sab tes ua kom muaj kev sib koom ua ke ntau ntxiv ntawm cov roj hmab tom qab vulcanization, ntawm qhov tod tes, nws kuj tsim cov txheej txheem hauv cov txheej txheem, uas ua rau txo qis kev cia ruaj khov ntawm cov roj hmab. ; ntau dhau ntawm kev kho saum npoo kuj ua rau silicone roj hmab tsis hnov zoo. Txij li thaum siv cov kua nplaum silicone feem ntau hloov kho thiab txhim kho los ntawm cov kab mob txuas txuas nrog cov tshuaj pleev kom zoo, qhov ua haujlwm nplaum no yog ua raws li kev sib cuam tshuam ntawm ob pawg hauv silane txuas tus neeg sawv cev thiab saum npoo ntawm kev tsim kho nruab nrab rau kev nplaum. Thaum cov calcium carbonate saum npoo tau kho nrog ntau cov nplaim Tus naj npawb ntawm cov pab pawg organic tau nce ntau, thiab qee qhov kev sib txuas ua ke nrog cov pab pawg ntawm silane txuas tus neeg saib xyuas kom cuam tshuam rau kev ua tiav adhesion rau kev tsim kho interface.
Cawv ntawm nanometer calcium carbonate nyob rau qhov ruaj ntseg ntawm cov dej haus cawv: qhov siab dua pH tus nqi ntawm nanometer calcium carbonate, qhov tsis zoo cia lub peev xwm ntawm dealxicized silicone roj hmab. Raws li kev txhim kho tas mus li ntawm cov khoom ua tau zoo thiab ua tau zoo, cov qauv ua ntau thiab ntau dua, Qee qhov xav tau rau nano calcium carbonate xav tau tus nqi pH qis dua 9.5; ua ke nrog cov kua roj silicone ua hauj lwm feem ntau siv cov hydrolysis dhia siab silane tus txuas tus neeg sawv cev, nws yog qhov yooj yim uas ua rau cov kab ya raws thiab cov nplai hluav taws xob hauv cov khoom ntim tsis muaj qhia txog hydroxyl thiab ya raws cov pa ua kom zoo nkauj Tus txuas tus neeg sawv cev ua rau tsim kom muaj cawv pub dawb, uas yog ib qho yooj yim txo qhov kev ua kom qhov chaw ruaj khov thiab kev ua kom zoo nkauj. lub system. Cov khoom siv tsis huv hauv cov npoo av tuaj yeem yooj yim nqus noo thaum ua rau cov txheej txheem calcium carbonate cia. Lub nano-calcium carbonate secondary hais yog ntxeem tau, thiab cov dej tsis yooj yim rau kev tshem tawm, Ua rau muaj dej ntau thiab hydroxyl nyob rau saum npoo ntawm calcium carbonate hais, uas yuav cuam tshuam nws lub chaw cia.
Cov ntsiab lus, calcium carbonate raws li cov roj hmab silicone ua kom muaj qhov sib txawv ntawm kev ua tiav ntawm cov khoom siv roj hmab silicone, xws li ya raws, qhov loj me, cov nyhuv kho saum npoo, thiab tus nqi pH.
