Pansi pamipikisano - madzi, bentonite kristalo kapangidwe ndi zabwino kwambiri, ndipo wapadera wabwino galasi kapangidwe amatsimikiza kuti ali ndi makhalidwe abwino kwambiri:
(1) Kuyamwa madzi
M'malo okhala ndi madzi okwanira, malo osanjikiza amatha kuonjezedwa, ndipo voliyumu pambuyo pa kuyamwa madzi imatha kuonjezedwa ndi l0 ~ 30 nthawi.
(2) Kuyimitsidwa
Bentonite mchere particles ndi ang'onoang'ono (m'munsimu 0.2μm), n'zosavuta kulekana pakati pa unit kristalo wosanjikiza, ndi mamolekyu madzi n'zosavuta kulowa pakati kristalo wosanjikiza ndi wosanjikiza galasi, makamaka montmorillonite pambuyo hydration zonse, kupanga colloid ndi madzi. Kuphatikiza apo, chifukwa ma cell a montmorillonite ali ndi nambala yofanana ya milandu yoyipa, amathamangitsana. Ndizovuta kuphatikizira mu tinthu tating'onoting'ono mu njira yochepetsera. Pamene pH ya kuyimitsidwa kwa madzi ndi> 7, kufalikira kumakhala kolimba ndipo kuyimitsidwa kumakhala bwino.
(3) Thixotropy
Gulu la hydroxyl mu kapangidwe kake limatulutsa zomangira za haidrojeni mu sing'anga yosasunthika, ndikupangitsa kukhala gel osakaniza ndi mamasukidwe enaake. Mukagwedezeka pamaso pa mphamvu yometa ubweya wakunja, zomangira za haidrojeni zidzawonongedwa ndipo kukhuthala kwake kudzafooka. Choncho, pamene njira ya bentonite imakwiyitsidwa, kuyimitsidwa kudzakhala ngati sol-madzimadzi okhala ndi fluidity yabwino, ndipo pamene mukubwadamuka wakunja uimitsidwa, udzakonzekera lokha mu gel osakaniza ndi atatu-dimensional network. Palibe kukhazikika kwa delamination ndi kulekanitsa madzi, ndipo mphamvu yakunja ikagwiritsidwa ntchito kuti isokoneze, gel osakaniza amatha kusweka mwamsanga ndipo fluidity ikhoza kubwezeretsedwa. Izi zimapangitsa bentonite kukhala ndi tanthauzo lapadera kuyimitsidwa.
(4) kugwirizana
Kugwirizana komwe kumabwera chifukwa cha kusakanikirana kwabentonitendipo madzi amachokera kuzinthu zambiri, monga bentonite hydrophilic, tinthu tating'onoting'ono tating'onoting'ono ta kristalo, tinthu tating'onoting'ono, tinthu tating'onoting'ono ta hydroxyl ndi madzi a hydrogen, omwe amapangidwa ndi mitundu yosiyanasiyana ya sol, kuti bentonite ndi madzi osakanikirana azikhala ogwirizana kwambiri.
(5) Adsorption
Pambuyo pa Al3 + m'malo ndi ma ions osiyanasiyana mu bentonite, kusalinganika kwapakati kwapakati kumapangidwira kupanga malo opangira magetsi. Panthawi imodzimodziyo, montmorillonite ili ndi malo akuluakulu enieni chifukwa cha mawonekedwe ake apadera a bioctahedral ndi kuphatikiza kwa laminate, kotero ili ndi mlingo wapamwamba wosankha.
(6) Kusinthana kwa ion
Kuchokera structural mfundo, bentonite wapangidwa ndi zigawo ziwiri za silika tetrahedron ndi wosanjikiza zotayidwa okusayidi octahedron pakati, mtengo mkulu akhoza m'malo ndi otsika mtengo cation mu selo, chifukwa mu mlandu kusamvana mu unit. wosanjikiza, bentonite ndi zoipa mlandu, ndipo ayenera kuyamwa zina exchangable K+, Na+, ca2+, Mg2+ kuchokera sing'anga ozungulira bwino mlandu. Ma cations osinthika kwambiri ndi ca2 + ndi Na +, motero, kutengera mtundu ndi kuchuluka kwa ma cations osinthika omwe ali.
(7) Kukhazikika
Bentonite imatha kupirira kutentha kwa 300 ℃, imakhala ndi kukhazikika kwabwino, kosasungunuka m'madzi, kusungunuka pang'ono mu asidi amphamvu, m'munsi amphamvu, kutentha sikokwanira kapena kuchepetsedwa, kusungunuka mu zosungunulira organic. Ili ndi kukhazikika kwamankhwala abwino.
(8) Zopanda-zowopsa
Bentonite si-poizoni ndi dzimbiri kwa anthu, ziweto ndi zomera, palibe kukondoweza khungu la munthu, palibe kukhudza manjenje ndi kupuma dongosolo, ndipo angagwiritsidwe ntchito ngati chonyamulira mankhwala.
Nthawi yotumizira: 2024 - 05 - 06 15:06:51