Watsawa Tasiri a cikin Polycarboxylate Superplasticizers

(Watsawa Tasiri a cikin Polycarboxylate Superplasticizers)

Abin da Polycarboxylate superplasticizer monomer

Polycarboxylate superplasticizers (PCE) yana ba da kankare tare da ruwa mai ƙarfi, ƙarfi, da kyakkyawan dorewa a ƙananan abun ciki, wanda ke haɓaka haɓakar masana'antar gini. Tsarin PCEs, kamar ƙungiyoyin aiki, jeri na monomer, kadarorin kwayoyin nauyi, tsayin babban sarkar, da girman sarkar gefe, suna tasiri kai tsaye ga saƙon manna siminti. Tsawon babban sarkar PCE yana samar da polymer tare da isassun ƙungiyoyin tallatawa akan barbashi na siminti. Sabanin haka, girman sarkar gefe yana ba da babban cikas mai tsauri tsakanin saman siminti. Mafi kyawun PCE yana buƙatar abun ciki da daidaita daidaitattun anka da ƙungiyoyi masu hanawa, waɗanda aka nuna azaman jerin monomer tare da kashin baya. PCE polymers tare da babban rabon abinci na unsaturated carboxylic acid da macromonomer nasu mafi girman rabo na AAA da jerin monomer (A wakilta acrylic acid, E wakiltar isoprenyl oxy polyethylene glycol ether) [9] a cikin PCE polymers. Tasirin tsarin kwayoyin PCE akan tsari da tsari na ruwa na man siminti ya kasance wurin bincike koyaushe. Babban abun ciki na unsaturated carboxylic acid na iya haifar da jinkirin hydration na manna siminti. Sabanin haka, yana ba da babban caji mai yawa da ƙarfin motsa jiki don polymers na PCE. A halin yanzu, ya kamata a ba da garantin girman sarkar gefe don samar da polymers na PCE tare da tsangwama mai tsauri. Sarkar motsin motsi da aka gabatar a cikin Formula (1) muhimmin mahimmanci ne na nauyin kwayoyin halitta don polymers a cikin polymerization na radical free radical, kuma yana daidaita kai tsaye da ma'aunin monomer [M] amma ya yi daidai da tushen tushen maida hankali [I]. Tsawon sarkar motsin motsi ya bambanta tare da maida hankali na monomer [M] keɓance a ƙarƙashin ƙayyadaddun tattarawar mai ƙaddamarwa da zafin jiki. Anan, kd da kt an sanya su azaman ƙimar ƙaddamar da sarkar akai-akai, ƙimar yaɗa sarkar akai, da ƙimar ƙarewar sarkar, bi da bi.

Tasirin Ma'aunin Monomer akan Abubuwan Ma'aunin Halitta

Babu bayyananniyar rarrabawa da kunkuntar nauyin kwayoyin halitta don samfurin ƙarshe na 52IPEG jerin PCE polymers a cikin sigar SEC tare da A/Eamong 3.0 da 6.0 da aka nuna a cikin Hoto 1. Matsakaicin SEC na 52IPEG4.2, 52IPEG5.0, da 52IPEG6.0 samfurin PCE sun kasance kama da PC. Yawan juzu'i na ragowar macromonomer a cikin 52IPEG3.0 ya fi na sauran samfuran. Akwai dalilai guda biyu na ƙananan juzu'i na 52IPEG macromonomer a cikin 52IPEG3.0: Na farko, macromonomer yana karkata zuwa copolymerization maimakon homopolymerization, kuma ba za a iya amsawa gaba ɗaya tare da ƙaramin abun ciki na acrylic acid; Na biyu, ingantaccen tasirin hanawa na raka'o'in EO ya rage yawan amsawa akan wani iyaka. Ya nuna cewa babban darajar A/E ya ƙaru juzu'i na ƙarshe na 52IPEG macromonomer. Polymers na PCE sun mallaki nauyin kwayoyin kusan 30,000 g/mol tare da ƙarancin sarkar gefe, kuma tsayin babban sarkar ya gabatar da babban tasirin tarwatsawa na farko a ƙaramin sashi-kusan 0.12%. Yawancin polymers na PCE masu inganci an samo su a lokacin ƙarawar acrylic acid a cikin sa'o'i uku na farko. An yi nazarin sifofin PCE polymers da aka haɗa a A / Ƙimar 3.0, 4.2, 5.0, da 6.0. Nauyin kwayoyin halitta, babban tsayin sarkar, da ƙimar amsawa na polymers PCE, da kuma jujjuyawar macromonomers, ya karu tare da ƙara yawan adadin acrylic acid zuwa 52IPEG macromonomers. Polymers tare da juzu'i na 53.8% an gano su a cikin 52IPEG6.0 bayan sa'a daya, kuma ya ma fi na polymers na 52IPEG3.0 da aka samar a cikin sa'o'i biyu na farko.

Watsawa Tasiri a cikin Polycarboxylate Superplasticizers

Girman sarkar gefe na polymers ya ragu tare da A/Kimanin gabaɗaya yayin aiwatar da amsawa a cikin takamaiman samfurin PCE. Ci gaba da ciyar da AA a yayin da ake mayar da martani shine dalilin da ya rage girman sarkar polymers. polymers na PCE da aka samar a cikin sa'a 1st sun mallaki mafi girman girman sarkar gefe da nauyin kwayoyin halitta. Ya kasance lokaci mai mahimmanci don sarrafa tsarin polymers na PCE, musamman ga masu girma A / Ƙimar. An samar da manyan polymers masu tasiri ta hanyar ƙara acrylic acid a cikin sa'o'i uku na farko. Ana buƙatar babban sashi na 0.26% na 52IPEG3.0 don isa farkon simintin manna na 26±0.5 cm, duk da haka ya nuna kyakkyawan iyawar riƙewa. Kusan 0.12% na allurai ana buƙata don wasu polymers na PCE, amma abubuwan riƙewa ba su da kyau. 52IPEG4.2 ya mallaki nauyin kwayoyin kimanin 30,000 g/mol da matsakaicin sarkar gefe; Babban tsayin sarkar 1 shine zaɓin da ya dace don aikace-aikacen. Tsarin polymers na PCE tare da ƙayyadaddun kaddarorin za a iya tsara su bisa la'akari da tasiri.

Farashin Polycarboxylate superplasticizer monomer

Girman barbashi na polycarboxylate superplasticizer monomer girma da tsafta zai shafi Farashin samfurin, kuma ƙarar siyan zai iya shafar farashin Polycarboxylate superplasticizer monomer. Babban adadin adadi mai yawa zai zama ƙasa. Farashin Polycarboxylate superplasticizer monomer yana kan gidan yanar gizon mu na hukuma.

Polycarboxylate superplasticizer monomer maroki

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(Watsawa Tasiri a cikin Polycarboxylate Superplasticizers)