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Incamake y'amahame yo gutoranya monomer muri synthesis ya acrylic resin

Kugirango byoroshye gukoreshwa, polymeric monomers mubisanzwe ishyirwa mubyiciro bitatu byingenzi: monomers ikomeye, monomers yoroshye na monomers ikora.Methyl methacrylate (MMA), styrene (ST), nijisho rya acrylic (AN) ni monomers ikoreshwa cyane, mugihe Ethyl acrylate (EA), butyl acrylate (BA), na isoryctyl acrylate (2-EHA) nibisanzwe. yakoresheje monomers yoroshye.

Acide ya acrylic ndende hamwe na methacrylic esters (nka lauryl na octadecyl esters) bifite imbaraga zo kurwanya inzoga no kurwanya amazi.

Monomers ikora ni acrylates na methacrylates irimo hydroxyl, naho monomers irimo amatsinda ya carboxyl ni acide acrylic na acide methacrylic.Itangizwa ryamatsinda ya hydroxyl irashobora gutanga amatsinda yimikorere yibisubizo bishingiye kumashanyarazi hamwe na polyurethane ikiza hamwe na amino resin yo guhuza.Abandi ba monomers bakora ni: acrylamide (AAM), hydroxymethylacrylamide (NMA), diacetone acrylamide (DAAM) na methacrylate ya Ethyl acetoacetate (AAEM), glycidyl methacrylate (GMA), dimethylaminoethyl methacrylate (DMAEMA) . . kunoza amazi arwanya emulisiyo, ikirere nibindi bintu, ariko igiciro cyacyo kiri hejuru. Emomerion polymerisation monomer, diacetone acrylamide (DAAM), Ethyl acetoacetkurya methacrylate (AAEM) bigomba gukoreshwa hamwe no kurangiza polymerisation hiyongereyeho hexanediyl dihydrazide, uruganda rwa hexanediamine, guhumeka amazi birashobora kuba mumiraro ya macromolecular hagati yo gushiraho firime ihuza.

Carboxyl monomer irimo acide ya acrylic na acide methacrylic, kwinjiza amatsinda ya carboxyl birashobora kunoza ibara ryamabara, kuzuza wettability hamwe no gufatira kuri substrate, kandi hamwe nitsinda rya epoxy rifite reaction, gukiza aminine bifite ibikorwa bya catalitiki.Carboxyl yibiri muri resin isanzwe ikoreshwa agaciro ka acide (AV), ni ukuvuga umubare wa miligarama ya KOH isabwa kugirango ubuze 1g resin, unit mgKOH / g (resin ikomeye), igenzura rusange rya AV hafi 10mgKOH / g (ikomeye resin), sisitemu ya polyurethane, AV hepfo gato, amino resin hamwe na AV irashobora kuba nini, kugirango iteze imbere guhuza.

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Iyo ushushanya hydroxy acrylic resin, ubwoko nubunini bwa hydroxyl monomer bigira uruhare runini mumikorere ya resin.Hydroxy acrylic aside yibice bibiri bigize sisitemu ya polyurethane ikoreshwa cyane nka hydroxyl monomer yibanze: hydroxyethyl acrylate (HEA) cyangwa hydroxyethyl methacrylate (HEMA);hydroxy acrylic aside igizwe na amine yo guteka amine ikoreshwa muburyo bwa hydroxyl monomer ya kabiri: acide acrylic-β-hydroxypropyl ester (HPA) cyangwa acide methacrylic-β-hydroxypropyl ester (HPMA).Igikorwa cya monomer kiri hejuru, kandi hydroxypropyl resin ikomatanyirijwe hamwe ikoreshwa nka hydroxyl yibigize lacquer ya amino, bigira ingaruka kububiko bwa lacquer, birashobora
hitamo hydroxypropyl ya kabiri.Mu myaka yashize, hariho hydroxyl monomers nshya, nka acide acrylic cyangwa hydroxybutyl methacrylate, hydroxyethyl methacrylate na ε-caprolactone yongeyeho (1: 1 cyangwa 1: 2 mol ratio, Dow Chem Company).Ibisigarira byashizwemo no kongeramo hydroxyethyl methacrylate na ε-caprolactone bifite ubukonje buke, kandi uburinganire bwiza bwo gukomera no guhinduka burashobora kugerwaho.Byongeye kandi, kwinjiza amatsinda ya hydroxyl kumpera yumunyururu wa macromolecular na hydroxyl yo mu bwoko bwa transfert zoherejwe (nka mercaptoethanol, mercaptopropanol, na 2-hydroxyethyl mercaptopropionate) bitezimbere ikwirakwizwa rya hydroxyl, byongera ubukana, kandi bigabanya molekile. gukwirakwiza ibiro, kugabanya ububobere bwa sisitemu.

Kunoza imyuka ya Ethanol kugirango itangize styrene, acrylate na methacrylic aside itera imbere ya alkyl esters kugirango igabanye ester groupe.Byombi birashobora gufatwa nkuburinganire bwikirere hamwe na Ethanol irwanya.Methacrylic aside itera imbere ya alkyl esters ni lauryl methacrylate, octadecyl methacrylate, nibindi, aba monomers bashingira cyane kubitumizwa hanze.

C ibisigarira byo gutwika akenshi ni cololymers, kandi ibikorwa byabo bya copolymerisation bigomba kwitabwaho muguhitamo monomers.Bitewe nuburyo butandukanye bwa monomer, ibikorwa bya copolymerisation biratandukanye, ibihimbano bya copolymer hamwe na monomer ivanze nibisanzwe biratandukanye, kuri binary, terpolymerisation, birashobora kuba bifitanye isano no kugereranya kopolymer.Kubantu benshi batandukana, ntaho bihuriye neza, gusa binyuze mubushakashatsi bwubushakashatsi, isesengura ryibibazo byihariye.Mubikorwa, uburyo bwo kugaburira monomer "inzara" uburyo bwo kugaburira (urugero igipimo cyo kugaburira monomer

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Byahinduwe hamwe na www.DeepL.com/Translator (verisiyo yubuntu)
Niba nta gaciro k'igipimo cya polymerisiyonike, Q na e agaciro ka monomer birashobora gukoreshwa mukubara igipimo cya polymerisation, cyangwa gukoresha Q na e mu buryo butaziguye kugirango dusuzume gusa ibikorwa bya copolymerisation, rusange ya cololymerisation monomer Q ntishobora gutandukana cyane, bitabaye ibyo biragoye kwigana;iyo e agaciro gatandukanye, biroroshye guhinduranya cololymerisation, bimwe bigoye kwigana monomer wongeyeho Q intera intera ya monomer, irashobora kunoza imikorere ya copolymerisation.

Guhitamo Monomer bigomba kandi kwitondera ubunini bwuburozi bwa monomer, ubumara rusange bwa acrylate buruta uburozi bwa methacrylate ihuye, nkuburozi bwa methyl acrylate buruta uburozi bwa methyl methacrylate, hiyongereyeho uburozi bwa Ethyl acrylate ni nini.

Byahinduwe hamwe na www.DeepL.com/Translator (verisiyo yubuntu)

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Igihe cyo kohereza: Kanama-22-2021