Hydroxypypyl methylcelulose, wotchedwa: HPMC kapena MHPC. Maonekedwe ndi oyera kapena oyera oyera; Kugwiritsa ntchito kwakukulu kuli ngati wobalalitsa polyvinyl chloride, ndipo ndiye wamkulu wothandizira wothandizira pokonzekera pvc poyimitsidwa polymerization. Munjira yomanga yomanga, imagwiritsidwa ntchito makamaka pomanga makina ngati khoma, popata, kugwa, ndi zina.; Makamaka pomangako zinthu zokongoletsera, imagwiritsidwa ntchito poika matayala a ceramic, marble, ndi zokongoletsera pulasitiki. Imakhala yolumikizana kwambiri ndipo imatha kuchepetsa kuchuluka kwa simenti. . Amagwiritsidwa ntchito ngati thickiner mu makampani opanga utoto, zomwe zimatha kupanga mawonekedwe owoneka bwino komanso osakhazikika, kupewa ufa, kusintha magwiridwe antchito, ndi zina zambiri.
Mu simenti matope ndi gypsum-zochokera ku gyproxpyl, hydroxypropyl methyllulose makamaka gawo la kusungidwa kwamadzi ndikukula, zomwe zimatha kusintha mphamvu yolumikizana ndi kukhazikika kwa slurry.
Zinthu monga kutentha kwa mpweya, kutentha ndi kuthamanga kwa mphepo kumakhudza kuchuluka kwa madzi mu matope a simenti ndi gypsum. Chifukwa chake, nthawi zosiyanasiyana, pali zosiyana zina mumadzi zosungidwa ndi ma hydroxypropyl owonjezera.
Mu zomanga zina, kuchuluka kwa madziwo kumatha kusinthidwa ndikukulitsa kuchuluka kwa HPMC yowonjezeredwa. Kusunga kwamadzi kwa methyl cellulose ether kumatentha kwambiri ndi chizindikiro chofunikira kusiyanitsa mtundu wa methyl cellulose ether.
Zabwino kwambiri hydroxpyl methylcellulose angapo zimatha kuthana bwino ndi vuto la madzi osungidwa kutentha kwambiri. Mu nyengo zotentha kwambiri, makamaka m'malo otentha ndi owuma ndi zomangamanga zowonda m'mbali mwa dzuwa, hpmc zapamwamba kwambiri zimafunikira kukonza chitetezo chamadzi cha slorry.
HPMC yapamwamba kwambiri imakhala ndi kufanana kwakukulu. Magulu ake a methoxy ndi hydroxyprophoxy amagawidwa mogwirizana ndi ma cellulose molecula ophatikizira maatomu a oxygen pa hydroxyl yolumikizana ndi madzi kuti apange zomangira za hydrogen. , kotero kuti madzi aulere amathira madzi omangidwa, kuti athetse bwino madzi oyambitsidwa chifukwa cha nyengo, ndikukwaniritsa madzi ambiri.
Madzi amafunika kuti azitha kugwiritsa ntchito zinthu zina ngati simenti ndi gypsum. Kuchuluka kwa hpmc kumatha kusunga chinyontho mu matope kwa nthawi yayitali kuti makonzedwe ndi kuumilira upitirizebe.
Kuchuluka kwa hpmc kumafunikira kuti nthawi yokwanira ikhale yokwanira:
1. Kuyamwa kwa maziko osanjikiza
2. Kupanga matope
3. Matalala wosanjikiza makulidwe
4. Kupha madzi kwa matope
5. Nthawi Yokhazikitsa Zinthu Zokukwiyitsira
Mphamvu yapamwamba kwambiri Kuchitira Mankhwala Omwe Amagwiritsa Ntchito Ndondomeko Kuti Muzikhala ndi Mphamvu ndi kulimbikitsa mphamvu za nkhaniyi.
Chifukwa chake, mu mamangidwe otentha kwambiri chilimwe, kuti mukwaniritse madzi a HPMC mokwanira mokwanira molingana ndi njira, ndi kubzala zoyambitsidwa ndi kuyanika kwambiri. Mavuto, komanso kuwonjezera zovuta zomangamanga. Pamene kutentha madontho, kuchuluka kwa HPMC yowonjezeredwa kumatha kuchepetsedwa pang'onopang'ono, ndipo madzi omwewo akwaniritsidwe.
Post Nthawi: Jan-16-2023