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Teeb meem lub cev qhuav dej: Yog tias cov phuam da dej tsis huv thaum ntxuav, nws yuav tsim cov tshuaj alkaline residues uas nyob hauv cov phuam fibers, ua rau cov phuam tawv tawv thiab txo nws cov firmness.

Cov tshuaj alkaline muaj kev nyab xeeb rau cov paj rwb fibers thaum lub sij hawm ntxuav thiab yuav tsis ua puas tsuaj rau cov phuam fibers. Tab sis yog tias lub cev qhuav dej tsis meej, cov seem ntawm alkaline detergent yuav nyob twj ywm hauv cov phuam fibers, thiab ziab cov phuam yuav ua rau nws nyuaj thiab txo nws cov softness.

Cov residue ntawm ammonia bleaching yog ib tug muaj zog bleaching neeg sawv cev nyob rau hauv cov khoom detergent, uas yuav ua rau ib co kev puas tsuaj rau paj rwb fibers nyob rau hauv paj rwb fabrics. Nws yog ib qho tsim nyog yuav tsum siv thiab tswj nws kom tsim nyog thaum ntxuav. Yog hais tias qhov kub thiab txias, lub sij hawm ntxuav, thiab cov concentration yog tswj tau zoo, nws kuj muaj kev nyab xeeb. Ntawm qhov tsis sib xws, yog tias qhov ntsuas kub, qhov siab, thiab qhov ntau tswj tsis tau zoo, ua ke nrog lub cev qhuav dej tsis tiav, cov khoom seem yuav tshwm sim hauv cov paj rwb fibers, uas tuaj yeem ua rau cov fibers ntawm cov paj rwb puas. Ua rau yellowing thiab hardening ntawm phuam ntaub.

Kev ua haujlwm ntawm cov phuam da dej tuaj yeem txo cov xim daj

Kev siv cov khoom siv raw yuav tsum tsim nyog thiab tsim nyog, thiab cov txheej txheem kev ua haujlwm yuav tsum ua raws: cov kauj ruam kawg ntawm kev ntxuav cov phuam yog siv cov kua qaub kom tsis txhob ua kom tsis zoo. Yog tias cov kua qaub tsis yog nruab nrab, nws tuaj yeem ua rau cov ntaub tig daj thiab grey. Thaum lub sij hawm ntxuav, vim muaj tej yam xws li dej hardness thiab dej tsis zoo, cov phuam da dej yuav ua rau greying thiab yellowing. Cov xwm txheej no feem ntau tshwm sim thaum siv cov kua qaub rau nruab nrab thiab rov ua kom cov ntaub so ntswg dawb. Thaum siv, nws yuav tsum tau muab sau tseg tias paj rwb fibers tsis ntshai ntawm acid los yog alkali. Yog tias cov kua qaub feem ntau siv rau kev ntxhua khaub ncaws, lub neej ntev ntawm cov phuam tuaj yeem txo qis. Yog li ntawd, cov tshuaj yuav tsum tau tswj. Tus neeg saib xyuas kev hloov pauv pH rau cov paj rwb ntaub yuav tsum tau hloov mus rau 5.5-65, thiab pH tus nqi ntawm peb cov tawv nqaij tib neeg yog tib yam.

Cov ntsiab lus ntawm kev txiav txim:

Koj tuaj yeem muab cov phuam tso rau hauv lub lauj kaub thiab muab tso rau hauv dej kom nws ncaj. Tom qab ntawd ncuav ib khob ntawm alkaline noodles thiab boil rau 5 feeb. Yaug nrog dej kub