Budada Putty waxay inta badan ka kooban tahay walxaha sameeya filimada (qalabka isku xidhka), buuxinta, wakiilada biyaha ilaaliya, dhumuclayaasha, furayaasha, iwm. Walxaha kiimikada dabiiciga ah ee caadiga ah ee ku jira budada putty waxaa inta badan ka mid ah: cellulose, istaarijka pregelatinized, istaarijka ether, alkohol polyvinyl, budada latex ee kala firdhisan, iwm. Hoos, Polycat waxay mid mid u falanqeyn doontaa waxqabadka iyo isticmaalka walxaha kiimikada ee kala duwan ee ceeriin ee adiga kuu ah.
Faybar:
Faybar (US: Faybar; Ingiriisi: Faybar) waxaa loola jeedaa walax ka kooban fiilooyin joogto ah ama aan kala go 'lahayn. Sida fiilooyinka dhirta, timaha xayawaanka, fiilooyinka xariirta, fiilooyinka macmal ah, iwm.
Cellulose:
Cellulose waa polysaccharide macromolecular ah oo ka kooban gulukoos waana qaybta ugu weyn ee qaab-dhismeedka derbiyada unugyada dhirta. Heerkulka qolka, cellulose kuma milmo biyaha ama dareere dabiici ah oo caadi ah. Tirada cellulose ee cudbigu waxay ku dhowdahay 100%, taasoo ka dhigaysa isha ugu saafiga ah ee dabiiciga ah ee cellulose. Guud ahaan alwaaxda, cellulose waxay ka dhigan tahay 40-50%, waxaana jira 10-30% hemicellulose iyo 20-30% lignin.
Farqiga u dhexeeya cellulose (midig) iyo istaarijka (bidix):
Guud ahaan, istaarijka iyo cellulose labaduba waa polysaccharides macromolecular, qaacidada molecular-kana waxaa lagu tilmaami karaa (C6H10O5) n. Miisaanka molecular-ka ee cellulose wuu ka weyn yahay kan istaarijka, cellulose-na waa la burburin karaa si loo soo saaro istaarijka. Cellulose waa D-glucose iyo β-1,4 glycoside polysaccharides macromolecular oo ka kooban bonds, halka istaarijka uu sameeyo bonds α-1,4 glycoside. Cellulose guud ahaan lama laamo, laakiin istaarijka waxaa laamo ku leh 1,6 bonds glycosidic ah. Cellulose si liidata ayuu ugu milmaa biyaha, halka istaarijku uu ku milmo biyaha kulul. Cellulose ma dareensiiyo amylase mana isu beddelo buluug marka uu la kulmo iodine.
Cellulose Ether:
Magaca Ingiriisiga eecellulose etherwaa cellulose ether, kaas oo ah isku-dhis polymer ah oo leh qaab-dhismeed ether ah oo laga sameeyay cellulose. Waa natiijada falgalka kiimikada ee cellulose (warshad) oo leh wakiilka etherification. Sida ku xusan kala-soocidda qaab-dhismeedka kiimikada ee beddelaha ka dib etherification, waxaa loo qaybin karaa anionic, cationic iyo nonionic ethers. Iyada oo ku xidhan wakiilka etherification ee la isticmaalo, waxaa jira methyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, ethyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose, cyanoethyl cellulose, benzyl cyanoethyl cellulose, carboxymethyl hydroxyethyl cellulose iyo phenyl cellulose, iwm. Warshadaha dhismaha, cellulose ether waxaa sidoo kale loo yaqaan cellulose, kaas oo ah magac aan caadi ahayn, waxaana si sax ah loogu magacaabaa cellulose (ama ether).
Habka Qarinta ee Qalabka Qarinta Ether-ka ee Cellulose:
Qalabka dhumucda ee Cellulose ether waa kuwa aan ionic ahayn oo inta badan qaro weyneeya fuuq-baxa iyo isku-xidhka u dhexeeya molecules-ka.
Silsiladda polymer-ka ee cellulose ether way fududahay in la sameeyo isku xidhka haydarojiin iyadoo biyaha ku jira biyaha, isku xidhka haydarojiinkuna wuxuu ka dhigayaa inuu yeesho fuuq-bax sare iyo isku xidhnaan molecular ah.
Markacellulose etherdhumuc-dhererka ayaa lagu daraa rinjiga latex-ka, wuxuu nuugaa biyo badan, taasoo keenta in muggiisa uu si weyn u ballaarto, taasoo yareyneysa booska bannaan ee midabada, buuxinta iyo walxaha latex-ka;
Isla mar ahaantaana, silsiladaha molecular-ka ee cellulose ether ayaa isku xiran si ay u sameeyaan qaab-dhismeed shabakad saddex-geesood ah, midabada, buuxinta iyo walxaha latex-ka ahna waxay ku wareegsan yihiin bartamaha shabagga mana si xor ah u socon karaan.
Labadan saameynood, waxaa la hagaajiyaa daxalka nidaamka! Waxaan gaarnay saameynta dhumucda ee aan u baahnayn!
Waqtiga boostada: Abriil-28-2024