Kugwiritsa Ntchito Technology ya Cellulose Ether HPMC mu Mortar

Ntchito za cellulose ether mumatope ndi: kusunga madzi, kuwonjezereka kwa mgwirizano, kukhuthala, kukhudza nthawi yoyika, ndi katundu wolowetsa mpweya.Chifukwa cha mawonekedwe awa, ili ndi malo ambiri ogwiritsira ntchito pomanga matope.

1. Kusungidwa kwa madzi kwa cellulose ether ndi khalidwe lofunika kwambiri pakugwiritsa ntchito matope.

Mfundo zazikuluzikulu zomwe zimakhudza kusungidwa kwa madzi a cellulose ether: kukhuthala, kukula kwa tinthu, mlingo, chogwiritsira ntchito, kusungunuka kwa madzi, kusungirako madzi: kusungirako madzi a cellulose ether palokha kumachokera ku solubility ndi kutaya madzi m'thupi la cellulose ether palokha.Ngakhale unyolo wa cellulose wa cellulose uli ndi magulu ambiri a hydroxyl okhala ndi mphamvu zamphamvu za hydration, sasungunuka m'madzi.Izi ndichifukwa choti mapangidwe a cellulose ali ndi crystallinity yayikulu, ndipo mphamvu ya hydration yamagulu a hydroxyl yokha sikokwanira kuwononga zomangira zolimba za intermolecular.Ma hydrogen bond ndi mphamvu za van der Waals, motero amangotupa koma samasungunuka m'madzi.Pamene cholowa m'malo anadzetsa mu unyolo maselo, osati m'malo akuswa chomangira haidrojeni, komanso interchain wa haidrojeni chomangira wasweka chifukwa wedging wa m'malo pakati moyandikana unyolo.Kukula kwakukulu kolowa m'malo, mtunda waukulu pakati pa mamolekyu ndi, womwe umawononga mphamvu ya haidrojeni.Kukula kwa latisi ya cellulose, yankho limalowa pambuyo poti latisi ya cellulose ikukulirakulira, ndipo cellulose ether imakhala yosungunuka m'madzi, ndikupanga yankho lapamwamba kwambiri.Kutentha kukakwera, hydration ya polima imafooka, ndipo madzi pakati pa maunyolo amathamangitsidwa.Pamene kutaya madzi m'thupi kuli kokwanira, mamolekyu amayamba kusonkhana, kupanga mawonekedwe a maukonde amitundu itatu ndi mpweya wa gel.

(1) Zotsatira za kukula kwa tinthu ndi nthawi yosakanikirana ya cellulose ether pakusunga madzi

Ndi kuchuluka komweko kwa cellulose ether, kusungidwa kwamadzi kwa matope kumawonjezeka ndi kuwonjezeka kwa mamasukidwe akayendedwe;kuwonjezeka kwa kuchuluka kwa cellulose ether ndi kuwonjezeka kwa mamasukidwe akayendedwe kumawonjezera kusungidwa kwamadzi kwamatope.Pamene zomwe zili mu cellulose ether zimaposa 0,3%, kusintha kwa kusunga madzi amatope kumakhala koyenera.Mphamvu yosungira madzi yamatope imayendetsedwa makamaka ndi nthawi yosungunuka, ndipo ether yabwino kwambiri ya cellulose imasungunuka mofulumira, ndipo mphamvu yosungira madzi imakula mofulumira.

(2) Mphamvu ya etherification ya cellulose ether ndi kutentha pakusunga madzi

Pamene kutentha kumakwera, kusungirako madzi kumachepa, ndipo kukweza kwa etherification ya cellulose ether, kumakhala bwino kwambiri kutentha kwa madzi kusungidwa kwa cellulose ether.Pogwiritsa ntchito, kutentha kwa matope osakaniza kumene kumakhala kochepa kuposa 35 ° C, ndipo pansi pa nyengo yapadera, kutentha kumatha kufika kapena kupitirira 40 ° C.Pankhaniyi, chilinganizo chiyenera kusinthidwa ndipo mankhwala omwe ali ndi digiri yapamwamba ya etherification ayenera kusankhidwa.Ndiko kuti, ganizirani kusankha ether ya cellulose yoyenera.

2. Mphamvu ya cellulose ether pa mpweya wa matope

Muzinthu zamatope owuma, chifukwa cha kuwonjezeredwa kwa cellulose ether, tinthu tating'onoting'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono ta matope, timalowetsedwa mumatope osakanikirana.Chifukwa cha mphamvu ya mpira wa thovu la mpweya, matope amakhala ndi ntchito yabwino ndipo amachepetsa kuzunzika kwa matope.Mng'alu ndi shrinkage, ndi kuonjezera mlingo linanena bungwe matope.

3. Mphamvu ya cellulose ether pa simenti hydration

Cellulose ether ali ndi retardation kwa hydration wa matope opangidwa simenti, ndi retardation zotsatira kumatheka ndi kuwonjezeka mapadi ether zili.Zomwe zimakhudzidwa ndi cellulose ether pa simenti hydration ndi: mlingo, digiri ya etherification, mtundu wa simenti.