Codsiga soosaarayaasha cellulose MC iyo HPMC

Maqaalkani wuxuu inta badan u doortaa MMA, BA, AA monomers, wuxuuna ka hadlayaa arrimaha ku-tallaalidda polymerization iyaga, sida isku xigxiga isku-darka, qadarka ku-darka iyo heerkulka falcelinta ee bilawga iyo monomer kasta, oo wuxuu ogaanayaa habka ugu wanaagsan ee habka polymerization-ka. Caaggu marka hore waa la miiray, ka dibna walaaq oo lagu milmaa dareere isku dhafan oo ah 70 ~ 80 ° C, ka dibna bilawga BPO ayaa lagu daraa qaybo. Monomer-ka ugu horreeya ee MMA ee lagu milmay BOP waxaa lagu daraa 80 ~ 90 ° C 20 daqiiqo, ka dibna lagu daro monomer labaad ee BPO, ka dib 20 daqiiqo oo kale, ku dar monomer saddexaad 84 ~ 88 ℃ oo walaaq 45 daqiiqo, sii wad. diiri ilaa 1.5 ~ 2 saacadood, ka dibna hel CR/MMA-BA-AA koollada saddex-geesoodka ah ee polymerization, xoogga diirka ayaa ka weyn CR/MMA-BA, qiimaheedu waa 6.6 KN.m-1.

Erayada muhiimka ah: Xabagta neoprene, xabagta kabaha, koolada neoprene ee meeshoodii ka kooban yahay.

Eter celluloseMCiyoHPMCwaxay leeyihiin waxqabadka fidinta wanaagsan, emulsification, dhumucdiisuna, adhesion, samaynta filimada, haynta biyaha, iyo sidoo kale waxay leeyihiin milanka biyaha aad u fiican, dhaqdhaqaaqa dusha, xasiloonida, iyo kala diri dareerayaasha organic.

Alaabooyinka ugu muhiimsan ee hadda la sameeyay waa RT taxane MC iyo noocyo HPMC, kuwaas oo darajooyinkoodu yihiin 50RT (Methylcellulose), 60RT (Hydroxypropylmethylcellulose), 65RT (Hydroxypropylmethylcellulose), 75RT (Hydroxypropylmethylcellulose), oo u dhiganta darajada Shirkadda, Ethocel A. F iyo K, siday u kala horreeyaan.

Alaabooyinka taxanaha RT ayaa aad faa'iido u leh waxyaabaha lagu daro qalabka dhismaha sababtoo ah isku xirnaantooda, xasiloonida hakinta iyo xajinta biyaha. Tusaale ahaan, waxaa loo qaabayn karaa tayo sare leh "derbiga dhoobada ah iyo xabagta sagxadda sagxadda", oo loo yaqaan budada caagga ah, kuwaas oo lagu isticmaalay Saldhigga Tareennada Galbeedka ee Beijing, saameyntu waa wanaagsan tahay. Intaa waxaa dheer, waxaa loo isticmaali karaa sida korantada jelled ee capacitors electrolytic iyo korantada isku xiran ee qalabka korantada, sida atropine, aminopyrine iyo kiristaalo futada ee daawooyinka, iyo sida dhumuc weyn ee emulsions biyaha ee rinjiga. Rinjiga cinjirka ah iyo rinjiga biyaha ku milma, waxa loo isticmaali karaa sida wakiilka samaynta filimada, dhumuclaha, emulsifier iyo stabilizer, iwm.

Erayada muhiimka ah: Methyl Cellulose, Hydroxy Propyl Cellulose, xabag, codsi.

Horumarinta xabagta gacanta ee caagagga ah ee biyaha ku salaysan

Sanadihii la soo dhaafay, hannaan cusub oo lagu dhejiyo filim caag ah oo ku saabsan arrinta daabacan ayaa la sameeyay. Waa BOPP (filim polypropylene ah oo ku jihaysan) oo lagu dahaadhay koollo ka dibna lagu dhejiyay walxo daabacan ka dib markii lagu riixo dhululubo caag ah iyo rullaluistemadka kuleylka si loo sameeyo warqad. / caaga 3-in-1 daabac. Tani waxay ku lug leedahay dhibaatada waraaqaha iyo isku xidhka balaastiga. BOPP waa walxo aan dabaylaha ahayn, sidaas darteed, waxaa jira baahi loo qabo xabag leh oo si fiican ugu dhejisan walxaha polar iyo non-polar labadaba.

Isku darka xabagta SBS iyo xabagta epoxy waxay leedahay waafaqid wanaagsan. SBS waa viscose elastomer ah. Waxaa laga arki karaa qalooca ay ku fashilantay in si loo hagaajiyo xoogga wax duminaya ee viscose, waa in lagu xakameeyaa agagaarka SBS: epoxy resin = 2: 1. Laga soo bilaabo qalooca xoogga diirka, waxaa la arki karaa in marka saamiga uu sarreeyo, xoogga diirka ayaa noqon doona mid weyn, laakiin adhesion sidoo kale wuu kordhi doonaa. Si looga fogaado adhesion, SBS: epoxy resin = 1: 1 ~ 2.5: 1 waa la xakameyn karaa si loo helo xoogga diirka si tartiib ah u koraya. Iyadoo la tixgelinayo si buuxda, go'aami SBS ee xabagta ugu weyn: epoxy resin = 1: 1 ~ 3.5: 1.

Shaqada ugu weyn ee isticmaalka xabagta xabagta waa in la kordhiyo xoogga isku xidhka ee matrixka iyo hagaajinta qoynta xabagta iyo dusha isku xidhka. Xabagta wax ka qabashada ee loo isticmaalo daraasaddan waa rosin tackifier ka kooban rosin caadi ah iyo rosin-dimerized oo qaybo kala duwan ah. Tijaabooyin badan oo la sameeyay, ayaa lagu soo gabagabeeyay in boqolkiiba rosin-ka-diimeed ee tackifierku ay tahay 22.5%, iyo xoogga diirinta xabagta ee la diyaariyey si waafaqsan saamigan waa 1.59N/25mm (warqad-caag ah).

Qadarka tackifier ayaa saameyn gaar ah ku leh sifooyinka koollada. Saamaynta ugu wanaagsani waa marka saamiga koollada ugu weyn iyo tackifier yahay 1: 1. Xoogga diirka N/mm caag-caag 1.4, warqad-caag 1.6.

Daraasaddan, MMA waxaa loo isticmaalay sidii dareere si loo isku daro SBS iyo MMA. Tijaabooyinku waxay ogaadeen in isticmaalka MMA uusan kaliya ku guuleysan karin ujeedada cajiinka qaybaha kolloidka, laakiin sidoo kale waxay yareeyaan viscosity iyo hagaajinta xoogga koollada. Sidaa darteed, MMA waa dareere wax laga beddelay oo ku habboon. Tijaabooyin ka dib, qadarka MMA ee la isticmaalay waa wadarta xabagta 5% ~ 10% waa ku habboon tahay.

Maadaama viscose-ka la sameeyay ay tahay inuu noqdo mid biyo-milmi kara, waxaan dooraneynaa cinjirka cad (polyvinyl acetate emulsion) sida side-biyoodka. Qadarka cinjirka cad wuxuu xisaabiyaa 60% wadarta viscose-ka. Ka dib markii viscose-ku-salaysan biyaha lagu shubo xaalad biyo-emulsion ah iyada oo loo marayo kala firdhinta iyo emulsification side emulsified, haddii ay joogteynta la qasi waayo ku haboon tahay isticmaalka, waxaa lagu qasi karaa biyo. Habka qasitaanku waa labadaba qiime jaban iyo mid aan sun ahayn (looma baahna in la isticmaalo dareerayaasha organic), nooca ugu fiican ee biyaha lagu qasi karaa waa 10% ~ 20%.

Si meesha looga saaro haraaga viscose-ka, waxaa la tijaabiyay in xalinta Na2CO3 la milo loo isticmaalo sida walxo alkalizing ah, saameyntuna waa tan ugu fiican. Aragtida saamaynta wakiilka alkalizing waxay noqon kartaa in falcelinta saponification ay soo bandhigto qaar ka mid ah ion polar xoog leh, sida ions sodium, si rosin acid-ka asalka ah ee aan milmi karin loo beddelo cusbada sodium ee Soluble. Intaa waxaa dheer, haddii saldhig aad u xoog badan lagu daro koollada, awoodda koollada ayaa lumin doonta, si ay koollada u fashilanto, markaa koollada kuma habboona deegaanka alkaline.

Socodka hab-socodka ku habboon.


Waqtiga boostada: Abriil-25-2024