Isekenkene esekwe kwi-cemementive yesona sicelo sikhulu sodaka olukhethekileyo olwahlukileyo. Luhlobo lwezinto eziphilayo okanye inoorganic kunye nesamente njengeyona nto iphambili yesamente kwaye ixhaswe iarhente yokugcina amanzi, iarhente yamanzi, amandla okuqala kunye nomgubo we-latex. umxube. Ngokubanzi, kufuneka idityaniswe namanzi. Xa kuthelekiswa nodaka lwesiqhelo Isetyenziselwa ukuhonjiswa kwe-Interporation kunye neethayile zodonga zangaphandle, iithayile zomgangatho kunye nezinye izinto zokuhombisa. Isetyenziswe ngokubanzi ekuhonjisweni kwe-Interporation kunye neendonga zangaphandle, imigangatho, igumbi lokuhlambela, igumbi lokuhlambela, ikhitshi, njl. Njl. Yeyona tile isetyenziswa kakhulu. I-Boing Sunds.
Ngokwesiqhelo, xa sigweba intsebenzo yefowuni, kufuneka sinikele ingqalelo kumandla ayo kunye nexesha lokuvula ukongeza kwintsebenzo yayo yokusebenza kunye nokwazi ukuchasana nokuchasana. Ukongeza ekuchaphazeleni iipropathi ze-rathoilogical yerabha ye-porcelain yerabha, njengokugungqa komsebenzi, imeko yomkhombe, njl njl.
1. Vula ixesha
NiniI-Polymer Polymer PollykwayeI-Selersese EtherI-Cofaces kumdaka omanzi, ezinye iimodeli zedatha zibonisa ukuba umgubo werabha unamandla e-kinetic amandla aqhotyoshelwe kwimveliso ye-quedration, kwaye i-etelUlose i-Ethed ikwindawo engaphezulu. I-viscosity kunye nokubeka ixesha lodaka. Ukuxinana komphezulu we-etelulose i-Ether inkulu kuneyona mgubo yerabha, kunye nokuphucula ubuchwephesha be-ilerses kwi-Extrogen kwi-hydrogen phakathi komgangatho kunye ne-ether.
Kubukhoboka omanzi, amanzi esinqeni i-Evaporatise, i-Ether Sether iqinelwe kumphezulu, kwaye ifilimu yenziwa phezu komphezulu wemizuzu emi-5, njengoko amanzi alandelayo athabathele kwi udaka. Inxalenye yokufuduka kwi-subner ye-fanor ye-fanser yegumbi, ukuvulwa kokuqala kwe-membrane kuchithwe kakhulu, kwaye ukufuduka kwamanzi kuya kuzisa i-tarsese engaphezulu kumphezulu wodaka.
Ukuqulunqwa kwefilimu ye-Sell Itelulose Ether kumphezulu wodaka kunempembelelo enkulu ekusebenzeni kodaka:
Okokuqala, ifilimu eyenziweyo icekeceke, iya kuchithwa kabini, ayinakho ukunciphisa umda wamanzi, ukunciphisa amandla.
Okwesibini, ifilimu eyenziweyo ininzi kakhulu, ukugxininiswa kwe-taryuese ekutsheni i-faid iphakame, kwaye i-vickosity inkulu. Xa i-tile inamathisele, akukho lula ukwaphula ifilimu yomphezulu.
Ukusuka koku, kuyaqondakala ukuba le filimu yefilimu yefilimu ye-etelulose ether inefuthe elikhulu kwixesha lokuvula. Uhlobo lwe-seluplose ether (i-HPMC,I-hemc, Mc, njl. Njl.
2, Ukomelela
Ukongeza ekudluliseleni iipropathi ezahlukeneyo ezifanelekileyo ezichazwe ngaphezulu kodaka, i-Selesese Ether igcina i-fitinetics zesamente yesamente yesamente. Olu luhlu lubangelwa yi-adsorvose yemolekyuli eyahlukeneyo yezimbiwa kwinkqubo ye-hydrance system, kodwa ngokubanzi iimolekyuli ze-ether i-erchive i-csh kunye ne-calcium hydroxide. Kwimveliso yekhemikhali, kunqabile ukuba ivunyelwe kwisigaba sezimbiwa zeli liniki. Ukongeza, ngenxa yokwanda kwe-viscosity yesisombululo se-pore, i-Ilselose Ether inciphisa ukushukuma kwe-ion (ca2 +,, njalo-, ...) kwisisombululo se-pore, ngaloo ndlela kulibazisa ukuqhubeka kwenkqubo ye-post.
I-Viscosity yenye iparameter ebalulekileyo emele iipropathi zekhemikhali ze-seluplose. Njengoko kuchaziwe apha ngasentla, i-viscofity ikakhulu ichaphazela umthamo wokugcinwa kwamanzi kwaye ikwanesiphumo esibonakalayo ekusebenzeni kodaka olutsha. Nangona kunjalo, izifundo zovavanyo ziye zafumanisa ukuba i-viscosity ye-Selese isete iphantse yasebenza kwi-kinetics yesamente yesamente. Ubunzima bemolekyuli bunempembelelo encinci kumbandela we-hydration, kwaye owona mahluko mkhulu phakathi kwemizuzu eli-10 kuphela. Ke ngoko, ubunzima bemolekyuli ayisiyo iparamenti ephambili yokulawula umhlamba we-qudd.
"Ukusetyenziswa kwe-selsulose ether kwimozulu esekwe ngokuxubeneyo kohlobo oluxubeneyo" ngokucacileyo ukuba ukubuyiselwa kwe-tartulose ether ixhomekeke kwimo yayo yekhemikhali. I-Trand General ishwankathelwe yile ye-MHC, iphezulu inqanaba le-methylity, incinci yokubuyiselwa kwe-tartulose ether. Ukongeza, izinto ezifumanekayo ze-hydrophilic (ezinjengokufakwa endaweni ye-hec) ziyintlawulo engaphezulu kune-hydrophotic enye (njengokufakwa endaweni ye-hydrophobic (njengokufakwa endaweni ye-MH, MHEC, MHPC). Isiphumo sokubuyiswa kwe-etelUlose i-ether ichaphazeleka ikakhulu ziiparamitha ezimbini zohlobo kunye nenani leqela eliphantsi.
Uvavanyo lwethu lwenkqubo yethu ikwafumanise ukuba umxholo wezinto ezizithobe zidlala indima ebalulekileyo kumatshini wokunamathela. Siyivavanye intsebenzo ye-HPMC enamanqanaba ahlukeneyo okufaka endaweni ye-tiles, kwaye ivavanye izibini ezisesetini ezinamaqela ahlukeneyo phantsi kweemeko ezahlukeneyo zokunyanga. Impembelelo yepropathi yoomatshini ye-tile ye-tile, umzobo 2 kunye ne-3 imiphumo yotshintsho kwi-Managexy (DS) umxholo kunye ne-hydroxypropoxy (MS) yomxholo wamandla enxenye.
Umfanekiso 2
Umfanekiso 3
Kuvavanyo, siqwalaseleHydroxypropyl methyl seluplose (hpmc), engu-ether entsonkothileyo. Ke ngoko, kufuneka sibeke la manani mabini kunye. Kwi-HPMC, sifuna ukubonelelwa ukuze kuqinisekiswe ukubenzela amanzi kunye nokukhanya ukukhanya. Siyawazi umxholo wezinto ezizimeleyo. Ikwamisela iqondo lokushisa le-HPMC, eligqiba kwendawo apho isetyenzisiwe i-HPMC. Ke ngoko, umxholo we-HPMC esetyenziswayo isetyenziswa i-HPMC yenziwa kuluhlu. Ungayidibanisa njani i-Mactionsy kunye ne-hydroxypropospy kumaqela alo mgangatho ukufezekisa iziphumo ezilungileyo koko sikufundayo. Umzobo 2 ubonakalisa ukuba ngaphakathi kuluhlu oluthile, ukwanda kwemixholo ye-APENGSYS kuya kuzisa amandla ezantsi kwamandla edonweyo, ngelixa umxholo we-hydroxypropoxyl uya kukwanda. Ngexesha elivulekileyo, kukho iziphumo ezifanayo.
I-Post Time: Dec-18 ukuya ku-2008