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Waa maxay sababta dharka polyester-ka loo jecel yahay?

Waqtiga: 2022-07-11 Hits: 82

Dharka dabiiciga ah ee saafiga ah waa suufka, hemp, xariir, dhogorta, asbestos, iwm. Inkastoo fiber dabiiciga ah ee ugu weyn, laakiin ma jiraan dhibaatooyin la dayacay, sida xasiloonida kiimikada, waxay ku tiirsan yihiin dhalidda hoose ee alaabta dabiiciga ah, fiilooyinka dabiiciga ah waxay u nugul yihiin caarada. , aboor, baaba'a isticmaalka ka dib, ma fududa in la dejiyo, fududahay in la soo saaro laalaabyada, iwm.

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Iyadoo la tixgelinayo wax soo saarka ballaaran, fiilooyinka kiimikada ayaa lagu dhejiyaa suuqa hal tijaabo iyo hagaajin, qiimo jaban iyo wax-soo-saar sare, waana la bedeli karaa, fududahay in la farsameeyo oo leh sifooyin adag oo adag. Sida fiber polyester-ka, oo inta badan loo yaqaan dharka polyester-ka, sida laga soo xigtay polyester-ku waxay leedahay sifooyin qaabayn oo aad u fiican, maro polyester ah iyo dharka qaabaynta ama toosan, ama sariiraha qalafsan, ee la isticmaalo, xitaa ka dib dhaqid badan, waxay sidoo kale ilaalin karaan qaabka asalka ah.
Iyo sifooyinka kiimikada ee polyester-ka, molecule polyester-ku wuxuu ka kooban yahay silsilad aliphatic hydrocarbon gaaban, kooxda ester, giraanta benzene, kooxda dhamaadka khamriga hydroxyl, ka saar labada dhamaadka alkohol hydroxyl group, ma jiro hiddo-side kale, taas oo ah sababta fiber polyester looga hadlay. sida hydrophilic liidata.

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Polyester molecule wuxuu ka kooban yahay 46% ester group, iyo kooxda ester-ka waa la hydrolyzed karaa oo kuleyl dildilaaca ka sarreeya 200 ℃, iyo xiriirka xooggan alkali waa la saponified iyo heerka polymerization waa la dhimi doonaa, iyo saabuunta qiyaasta caadiga ah ee ka hooseeya 100 ℃ wax saameyn ah ma leh. on dharka polyesterka.
Dharka polyester-ka ayaa iska caabin kara iftiinka xooggan, sidaas darteed waxay ku habboon tahay dharka daahyada. Marka la barbar dhigo fiilooyinka dabiiciga ah, dharka polyester-ka ayaa aad uga adkeysanaya iftiinka qorraxda. Marka dharka la qalajiyo, dad badan ayaa ogaan doona calaamadda "No Exposure to Light Sun" sababtoo ah maro badan ayaa laga yaabaa inay saameyn xun ku yeeshaan marka ay la kulmaan iftiinka qoraxda, laakiin qoto dheer, dad badan ayaa dareema in dharku uusan lahayn naf haddii aysan ku dhicin iftiinka qorraxda (qufac). , sidaas darteed dharka polyester-ka ayaa si badbaado leh loogu bandhigi karaa iftiinka qorraxda iyo sunta (haha).
Polyester sidoo kale waa mid aad u jilicsan, xitaa ka dib markii la xoqo soo noqnoqda, waxay si dhakhso ah ugu soo noqon doontaa prototype, kamana tagi doonto qulqulo aan soo jiidasho lahayn.
Waxa kale oo jirta arrin badbaado leh, dharka polyester-ka ayaa aad ugu adkaysan kara kulaylka iyo tignoolajiyada qaabaynta uumiga ayaa si fiican u xajin kara.

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Iska caabbinta kiimikada ee dharka polyester-ka sidoo kale waa mid aad u wanaagsan, saabuunta kiimikaad ee sahayda lagu dhaqo, sida fasalka warankiilo oo aan waxyeello u geysan walxaha dharka. Dharka polyester-ka maaha inay aad uga welwesho caaryada, xasuuso inaad ku riddo darsin mothballs ee golaha wasiirada si aad u hubiso in dharka lagu dhejiyay golaha wasiirada, laakiin sidoo kale ka walwalsan tahay jaalaha iyo caaryada dhaadheer? Xitaa haddii aad geliso N mothballs, weli ka walwalsan jacaylka dharka ee golaha wasiirada, laakiin dharka polyester-ka ayaa laga yaabaa inay awoodaan inay si aasaasi ah u hareer maraan dhibaatooyinka noocaas ah.

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