Plank ya haɗa polycarboxylate ta amfani da acrylic acid

(Plank hada polycarboxylate ta amfani da acrylic acid)

Abin da Polycarboxylate superplasticizer monomer

Unsaturated monomers na carboxylic acid, alkane macromonomers na dogon sarƙoƙi, da sauran hada polycarboxylate superplasticizers. Ya kasance kyakkyawan tarwatsa siminti wanda zai yi babban aiki a cikin kankare. Dangane da hanyar haɗin manyan sarƙoƙi da sarƙoƙi na gefe, PCE gabaɗaya za a iya raba su zuwa nau'i biyu: polyester da polyether. Siffofin tsarin PCE na tushen polyester sune haɗin ester na babban sa da sarƙoƙin gefe. Makullin fasahar roba shine macromonomer, ta amfani da methoxy polyethylene glycol da acrylate don yin esterification ko transesterification. Duk da haka, har yanzu akwai wasu matsaloli a cikin wannan tsari, kamar matsaloli a polymerization na esterification ko transesterification, kai-polymerization na kananan monomers, da yawa illa a cikin kayayyakin. A halin yanzu, an sami amsawar polyether ta hanyar polymerization mai tsattsauran ra'ayi, ta amfani da macromonomers na alkenyl polyglycerol ether (carboxylic acid da sulfonic acid) da sauran ƙananan monomers don yin polymerize a cikin ruwa mai ruwa kai tsaye. Ƙungiyoyi masu aiki za su iya amsawa tare da ƙungiyar -COOH akan manyan sarƙoƙi na polycarboxylate, da kuma sarƙoƙi na gefe tare da -C = C- bond biyu kuma ana iya haɗa su zuwa kashin baya ta hanyar polymerization mai tsattsauran ra'ayi. Ta wannan hanyar, ana iya canza tsari da kaddarorin polycarboxylate. Wasu ƙananan monomers masu aiki sun gabatar da sassan sassan tsarin kwayoyin halitta a cikin PCE. Kayayyaki kamar nauyin kwayoyin halitta, polarity, da aikin polymerization na waɗannan macromonomers masu aiki suna da alaƙa da inganci da aikin PCE. An nuna hanyoyin shirya su kamar haka. An yi amfani da polymerization na buɗe zobe ta hanyar monomers marasa ƙarfi kamar hydroxyalkyl acrylate ko allyl barasa azaman masu farawa, waɗanda ke da hydrogens masu aiki a cikin sarƙoƙi na ƙarshe. Bayan haka, ta ƙara oxirane don polymerization, ana iya samun macromonomers masu aiki. Ta amfani da methyl methacrylate a matsayin mai ƙaddamarwa, game da 0.05% adadin ƙarfe oxide hadaddun a matsayin mai kara kuzari, da kuma wasu ingantattun inhibitors na polymerization, Poellmann et al. hada propylene oxide da ethylene oxide zuwa polymerization-bude zobe da kuma hada reactive macromonomers dauke da su biyun, wanda zafin dauki ya kasance 110 ° C da matsa lamba ne 0.3 MPa. A cikin autoclave, Kinoshita da Tamaki sun yi amfani da allyl barasa a matsayin mai farawa da sodium hydroxide a matsayin mai haɓakawa a 115 ° C-125 ° C, wanda aka kara a cikin ethylene oxide don polymerization, don haka, an haɗa jerin macromonomers tare da ma'auni daban-daban. Ta hanyar yin amfani da abin da ya samu tare da maleic anhydride, an sami jerin PCE. Bugu da ƙari, an sami sabuwar hanyar roba don samun macromonomers da ake kira polymerization na buɗewa na zobe. Ta amfani da methyl methacrylate a matsayin mai ƙaddamarwa da narkar da zafi mai zafi na Mg-Al hydrotalcite a matsayin mai haɓakawa, ana iya yin ci gaba da buɗewar zobe da aka haɗe da oxirane, wanda za'a iya saka shi cikin haɗin ester a cikin methyl methacrylate.

Plank ya haɗa polycarboxylate ta amfani da acrylic acid

A zamanin yau, an yi ƙoƙari da yawa don inganta tsari da haɗin PCEs. A cikin wani binciken da Liu et al., amide-structural polycarboxylate superplasticizers (amide-PCEs) aka samar da amidation dauki tsakanin polyacrylic acid (PAA) da kuma amino-terminated methoxy polyethylene glycol (amino-PEG) a 130-150 ° C. Yau et al. An yi amfani da butenyl alkylene polyoxyethylene-polyoxypropylene ether (BAPP) azaman macromonomers da 2, 2-azoisobutyronitrile a matsayin mai ƙaddamarwa a cikin yanayin N2 don 48 h a 70 ° C. Sun kasance suna haɗa polycarboxylate wanda zai iya haɓaka hydration na siminti sosai. A cikin binciken Lange, an yi amfani da acrylic acid da ω-methoxy poly (ethylene glycol) methacrylate ester don haɗa polycarboxylate nonadsorbing a 80 ° C cikin sa'o'i hudu. An gano cewa duk polycarboxylates da aka haɗa, waɗanda ba su daɗaɗɗen siminti, na iya haɓaka tarwatsawa da gudana sosai. Masu bincike sun haɓaka PCE mai kyau tare da rage yawan ruwa, daidaitawa mai kyau, da sauran ayyuka masu kyau. A lokaci guda kuma, suna ƙoƙarin faɗaɗa tushen albarkatun albarkatun ƙasa da hanyoyin haɗin gwiwa, rage farashin samarwa, da haɓaka ingancin kwanciyar hankali mataki-mataki. Don haka, makasudin wannan binciken shine don gano abubuwan ci gaban su ta hanyar yin bita kan ci gaban haɓakar polycarboxylate, da fatan taimakawa ci gaban wannan masana'antar.

Polymerizable masu amsawa macromonomers kamar methoxy polyethylene glycol acrylate

Huang ya zaɓi monomers daban-daban, rabon monomers iri-iri, kuma ya daidaita tsarin amsawa. An haɗa jerin PCE tare da allyl barasa polyethylene glycol (APEG, EO = 45), acrylic acid (AA), maleic anhydride (MAL), 2-acrylamide-2-methylpropane sulfonic acid (AMPS), da ammonium persulfate (APS) kuma. Don ƙayyade mafi kyawun tsari na PCE, yanayi daban-daban na amsawa na PCE an bincika sosai, kamar maida hankali mai amsawa, zafin jiki, da ma'aunin kwayoyin halitta na monomers. Sun da Lei sun haɗa PCE bisa tushen maganin polymerization ta methyl acrylic acid (MAA), methoxy polyethylene glycol methacrylate (MPEGMA), da sodium methyl acryl sulfonate (SMAS). Akwai mafi kyawun yanayin halayen da ya yi la'akari da su kamar haka: rabon n (MA): n (AA): n (XPEG) shine 2: 2: 1, adadin mai ƙaddamarwa shine 1.5%, zafin amsawa shine 70 ° C, kuma lokacin amsawa shine sa'o'i shida. Ran et al. [26] sun haɗa ƙungiyoyi biyu daban-daban na tarwatsa masu kamar copolymer tare da tsayin sarkar gefen jere daga 8 zuwa 48 ta hanyar polymerization kai tsaye. Plank et al. ya haɗa wani sabon nau'in methacrylate polycarboxylate tare da ƙungiyoyin sarkar polyoxyethylene na gefe hydroxyl a tashar ta a cikin sarƙoƙi na gefe. Wannan ya bambanta da na gargajiya tare da sarƙoƙin gefen methoxy. An nuna cewa akwai tsarin tsefe a cikin copolymer, wanda ya dace da siminti mai kyau. Hakanan, yana da kyakkyawan fata na aikace-aikacen. Yamada et al. yayi nazarin halaye na tsayin sarkar gefen PEO da digiri na polymerization. An nuna cewa tasirin tsarin sinadarai akan ruwan manna ba su da mahimmanci a babban w/c. Zhu et al. hada PCE a cikin ruwa bayani ta amfani da allyl barasa polyoxyethylene (APEG), methacrylic acid (MAA), maleic anhydride (MA), da sodium methacrylic sulfonate (MAS) a matsayin monomers da ammonium persulfate a matsayin mai farawa. An yi la'akari da cewa an gabatar da wani yanki na ƙungiyoyin polar anionic (irin su -COOH da -SO3H) a cikin manyan sarƙoƙi a cikin PCE. Don haka, an samar da manyan sarƙoƙi na hydrophilic, waɗanda ke da haɗin gwiwar hydrogen mai ƙarfi a cikin ruwa. Za su iya samar da barga mai kariya mai girma mai girma uku da samar da tsangwama. Ta hanyar daidaita ma'auni na kowane rukunin aiki na manyan sarƙoƙi na polymer da sarƙoƙi na gefe, an sami ma'auni na tsari don haɓaka raguwar ruwa.

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

Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Lardin Henan, kasar Sin, abin dogara ne kuma mai ingancin kayan sinadarai na duniya da masana'anta. Yana da fiye da shekaru 12 na gwaninta samar da ultra-high quality sunadarai da nanotechnology kayan, ciki har da Polycarboxylate superplasticizer monomer, nitride foda, graphite foda, sulfide foda, da 3D bugu foda. Idan kuna neman abubuwan daɗaɗɗen kankare masu inganci, da fatan za ku iya tuntuɓar mu kuma ku aiko da tambaya. (sales@cabr-concrete.com). Muna karɓar biyan kuɗi ta Katin Kiredit, T/T, West Union, da Paypal. TRUNNANO zai jigilar kayan ga abokan ciniki a ketare ta hanyar FedEx, DHL, ta iska, ko ta ruwa.

(Plank hada polycarboxylate ta amfani da acrylic acid)