Matsaloli lokacin amfani da pce foda

(Matsalolin lokacin amfani da pce foda)

Dangane da tsarin aiki, tsarin kwayoyin halitta na polycarboxylate superplasticizer shine nau'in tsefe, kuma ana amfani da rukunin "anchoring" na polar anion tare da babban sarkar da ake amfani da shi don adsorb akan siminti. Tsarin tsegumi na waje wanda ke da goyan bayan sarƙoƙi masu yawa da yawa yana ba da isassun tasirin tsari na sarari don ƙarin tarwatsa sassan siminti. Idan aka kwatanta da tunkuɗewar wutar lantarki na Layer biyu na naphthalene superplasticizer, tsangwama mai tsauri yana sa watsewar ya daɗe sosai. Ta hanyar canza tsarin tsefe mai kyau na polycarboxylate superplasticizer da canza yawa da tsayin sarkar gefe, ana iya samun babban rage ruwa da babban ƙarfin farkon superplasticizer wanda ya dace da abubuwan da aka riga aka tsara. Polycarboxylate superplasticizer na iya daidaitawa da canza tsarin kwayoyin halitta bisa ga buƙatun don cimma manufar canza aikin, maimakon yin amfani da fili mai sauƙi don gyaggyarawa, dangane da wannan fahimtar, yana iya ƙarfafa haɓaka fasahar aikace-aikacen mu a nan gaba.

Daidaitawar polycarboxylate superplasticizer zuwa kayan siminti Matsayin jikewa na polycarboxylate superplasticizer ya bambanta sosai tsakanin nau'ikan siminti daban-daban, don haka yana da matukar muhimmanci a nemo madaidaicin siminti daban-daban. Duk da haka, idan an ba da izinin mai amfani kawai don ƙara 1.0%, a ƙarƙashin wannan abun ciki, idan daidaitawar simintin da aka zaɓa ba shi da kyau, yana da wuyar gaske ga mai samar da kayan aiki don yin haka, kuma hanyar fili sau da yawa yana da ƙananan tasiri.

Daidaitawar ash na farko yana da kyau, kuma ash na biyu da na uku bai dace da halin da ake ciki ba, don haka tasirin ba a bayyane ba ko da an ƙara yawan abun ciki na polycarboxylic acid. Sau da yawa idan nau'in siminti ɗaya ko ash ɗin tashi ba su dace da abin da aka haɗa ba, lokacin da kuka canza wani abu har yanzu bai gamsu ba, ƙila ku canza kayan siminti a ƙarshe.

Matsalar abun ciki na laka a cikin yashi

Lokacin da abun cikin yashi ya yi yawa, yawan rage yawan ruwa na polycarboxylate superplasticizer zai ragu a fili. Ana magance amfani da naphthalene superplasticizer sau da yawa ta hanyar ƙara wasu abun ciki, amma polycarboxylate superplasticizer ba ya canzawa a fili lokacin da abun ciki ya karu. A yawancin lokuta, lokacin da ruwa bai cika buƙatun ba, simintin ya fara zubar da ruwa. A wannan lokacin, tasirin daidaita adadin yashi, haɓaka abun ciki na gas ko ƙara mai kauri ba zai yi kyau sosai ba. Hanya mafi kyau ita ce rage abun cikin laka.

Matsala ta iskar sha'awa

Polycarboxylate superplasticizer sau da yawa yana riƙe da wasu abubuwan da ke aiki a saman da ke rage tashin hankali a cikin tsarin samarwa, don haka yana da takamaiman kayan haɓaka iska. Wadannan abubuwan da ke aiki sun bambanta da na al'ada na shigar da iska. Wasu sharuɗɗan da ake buƙata don samar da barga, ƙanana da rufaffiyar kumfa ana la'akari da su a cikin tsarin samar da iska na iska, kuma waɗannan ingantattun abubuwan za a ƙara su zuwa wakili na iska. A sakamakon haka, kumfa da aka kawo a cikin kankare ba zai iya saduwa da bukatun abubuwan da ke cikin iska ba, amma kuma ba zai yi tasiri ga ƙarfin da sauran kaddarorin ba. A cikin tsarin samarwa, abun ciki na gas na polycarboxylate superplasticizer na iya zama wani lokaci har zuwa 8%. Idan aka yi amfani da shi kai tsaye, ba shi da lahani ga ƙarfin, don haka hanyar da ake bi a yanzu shine a fara zubar da kumfa sannan kuma zubar da iska. Masu sana'a na defoamer na iya sau da yawa samarwa, kuma masu shigar da iska a wasu lokuta suna buƙatar zaɓi ta sashin aikace-aikacen.

Abun ciki na polycarboxylic acid superplasticizer.

A polycarboxylic acid superplasticizer yana da abũbuwan amfãni daga cikin low abun ciki, high ruwa rage kudi da kuma mai kyau slump kiyayewa, amma wadannan matsaloli kuma faruwa a aikace-aikace: 1 abun ciki ne sosai m da kuma nuna mafi girma ruwa rage kudi a lokacin da ruwa mai ɗaure rabo ne kananan, amma a lokacin da ruwa mai ɗaure rabo ne sama da 0.4, da ruwa rage kudi da canji ba a bayyane yake ba, wanda zai iya zama alaka da aikin polyplastic acid. Watsewarta da riƙon sa ya ta'allaka ne a cikin ƙwaƙƙwaran abin hanawa da tsarin kwayoyin halitta ya haifar. Lokacin da rabo mai ɗaure ruwa ya yi girma, akwai isasshen sarari tsakanin ƙwayoyin ruwa a cikin tsarin watsawar siminti, don haka tasirin hana ƙwayoyin polycarboxylic acid ya fi ƙanƙanta. (2) tasirin adadin siminti ya fi fitowa fili lokacin da adadin simintin ya yi girma. A karkashin yanayi guda, tasirin rage ruwa na jimlar adadin siminti <300 μ m / m3 bai kai na> 400 μ m / m3 ba, kuma zai sami sakamako mai girma lokacin da rabon ruwa zuwa ɗaure yana da girma kuma adadin siminti ya ƙaru. Polycarboxylate superplasticizer an ƙera shi don siminti mai girma, don haka aikinsa da farashinsa sun fi dacewa da siminti mai girma.

Haɗuwa da polycarboxylate superplasticizer

Polycarboxylate superplasticizer ba za a iya haɗa shi da naphthalene superplasticizer ba. Idan ana amfani da nau'ikan superplasticizer guda biyu a cikin kayan aiki iri ɗaya, za su yi tasiri lokacin da ba a tsabtace su sosai ba. Sabili da haka, ana buƙatar polycarboxylate superplasticizer sau da yawa don amfani da saitin kayan aiki kaɗai. Dangane da amfanin da ake amfani da shi na yanzu, daidaitawar wakili mai haɓaka iska da polycarboxylate yana da kyau, wanda galibi saboda ƙarancin abun ciki na wakili mai haɓaka iska, wanda zai iya zama mai dacewa da ƙari tare da polycarboxylate superplasticizer. Daidaitawar sodium gluconate a cikin retarder shima yana da kyau, amma ba shi da kyau tare da sauran abubuwan haɗin gishiri na inorganic, don haka yana da wahala a haɗe.

Ƙimar PH na polycarboxylate superplasticizer

Darajar PH na polycarboxylate superplasticizer yana ƙasa da na sauran superplasticizers, wasu daga cikinsu kawai 6-7 ne, don haka ana buƙatar adana su a cikin FRP, filastik da sauran kwantena, amma ba a cikin kwantena na ƙarfe na dogon lokaci ba. Zai haifar da lalacewar polycarboxylate superplasticizer, kuma zai shafi rayuwar kwandon karfe da amincin tsarin ajiya da sufuri bayan yazawar acid na dogon lokaci.

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(Matsalolin lokacin amfani da pce foda)