Feem ntau cov khau tawv tawv tiav cov teeb meem feem ntau poob rau hauv pawg hauv qab no.
1. Cov teeb meem daws teeb meem
Hauv kev tsim khau, cov kuab tshuaj feem ntau siv yog toluene thiab acetone. Thaum cov txheej txheej ntsib cov kuab tshuaj, nws ib nrab swells thiab softens, thiab ces dissolves thiab ntog. Qhov no feem ntau tshwm sim nyob rau hauv pem hauv ntej thiab nram qab qhov chaw. Kev daws:
(1) Xaiv cov ntoo khaub lig-txuas lossis epoxy resin-hloov polyurethane lossis acrylic resin ua tus neeg ua yeeb yaj kiab. Hom resin no muaj cov kuab tshuaj tiv thaiv zoo.
(2) Ua kom qhuav filling kev kho mob txhawm rau txhim kho cov kuab tshuaj tiv thaiv ntawm txheej txheej.
(3) Tsim nyog nce tus nqi ntawm cov protein nplaum hauv cov kua txheej los txhim kho qhov sib sib zog nqus hnyav.
(4) Spray cross-linking agent rau kev kho thiab kev sib txuas.
2. Kev sib txhuam ntub dej thiab dej tsis kam
Kev sib txhuam ntub dej thiab dej tsis kam yog qhov ntsuas tseem ceeb ntawm cov tawv tawv. Thaum hnav khau tawv tawv, koj feem ntau ntsib qhov chaw nyob hauv dej, yog li koj feem ntau ntsib kev sib txhuam ntub dej thiab cov teeb meem dej tsis haum. Cov laj thawj tseem ceeb ntawm qhov tsis muaj kev sib txhuam ntub dej thiab dej tsis kam yog:
(1) Cov txheej txheej saum toj kawg nkaus yog rhiab rau dej. Qhov kev daws teeb meem yog siv cov txheej txheem saum toj kawg nkaus lossis cov tshuaj tsuag dej tsis zoo. Thaum siv cov txheej txheem saum toj kawg nkaus, yog tias siv casein, formaldehyde tuaj yeem siv los kho nws; ntxiv me me ntawm silicon-muaj cov khoom sib txuas rau cov kua dej saum toj kawg nkaus tuaj yeem txhim kho nws cov dej tsis kam.
(2) Cov dej-rhiab heev, xws li surfactants thiab resins nrog cov dej tsis zoo, yog siv rau hauv cov kua txheej. Txoj kev daws teeb meem yog kom tsis txhob siv cov surfactants ntau dhau thiab xaiv cov resins nrog cov dej tsis zoo.
(3) Qhov kub thiab siab ntawm cov ntawv xovxwm siab dhau lawm, thiab tus neeg sawv cev nruab nrab txheej tsis txuas tag nrho. Txoj kev daws teeb meem yog kom tsis txhob siv cov tshuaj siv quav ciab ntau dhau thiab cov khoom siv silicon uas muaj cov khoom sib xyaw ua ke thaum lub sij hawm nruab nrab txheej thiab txo qhov kub thiab siab ntawm cov xovxwm phaj.
(4) Organic pigments thiab dyes yog siv. Cov pigments xaiv yuav tsum muaj permeability zoo; nyob rau hauv cov txheej txheem saum toj kawg nkaus, tsis txhob siv cov dyes ntau dhau.
3. Teeb meem nrog kev sib txhuam qhuav thiab puas
Thaum rub cov tawv nqaij nrog ib daim ntaub qhuav, cov xim ntawm cov tawv nqaij yuav raug muab tshem tawm, qhia tias qhov kev sib txhuam qhuav ntawm cov tawv no tsis zoo. Thaum taug kev, lub ris feem ntau rub tawm ntawm lub luj tshib ntawm cov khau, ua rau cov txheej txheem txheej ntawm cov khau yuav tsum tau so, thiab cov xim ntawm lub hauv ntej thiab nraub qaum tsis sib haum. Muaj ntau qhov laj thawj rau qhov tshwm sim no:
(1) Cov txheej txheej yog mos heev. Txoj kev daws teeb meem yog siv cov txheej txheem nyuaj thiab nyuaj dua thaum txheej txheej txheej hauv qab mus rau txheej txheej sab saud.
(2) Cov xim tsis zoo tag nrho lossis qhov adhesion yog qhov tsis zoo, vim tias qhov sib piv ntawm cov xim hauv txheej yog loj heev. Qhov kev daws teeb meem yog txhawm rau nce qhov sib piv ntawm cov resin thiab siv lub penetrant.
(3) Lub qhov hws ntawm cov tawv nqaij yog qhib heev thiab tsis hnav tsis kam. Txoj kev daws teeb meem yog siv cov kev kho mob qhuav kom ua rau muaj kev tiv thaiv ntawm cov tawv nqaij thiab ntxiv dag zog rau kev kho cov kua txheej txheej.
4. Tawv tawg teeb meem
Hauv cov cheeb tsam uas muaj huab cua qhuav thiab txias, tawv tawv feem ntau ntsib. Nws tuaj yeem txhim kho tau zoo los ntawm kev siv tshuab rewetting (rewetting tawv ua ntej ncab qhov kawg). Tam sim no muaj cov cuab yeej tshwj xeeb rewetting.
Lub ntsiab yog vim li cas rau tawv cracking yog:
(1) Cov txheej nplej ntawm cov tawv tawv tawv dhau lawm. Yog vim li cas yog qhov tsis zoo neutralization, ua rau tsis sib xws ntawm tus neeg sawv cev retanning thiab kev sib txuas ntau dhau ntawm cov txheej nplej. Txoj kev daws teeb meem yog rov tsim cov qauv hauv dej.
(2) Cov tawv tawv sab sauv yog xoob thiab qib qis. Txoj kev daws yog kom qhuav sau cov tawv nqaij xoob thiab ntxiv qee cov roj rau hauv cov roj filling kom cov tawv tawv tsis dhau los tiv thaiv sab sauv los ntawm kev tawg thaum hnav. Cov tawv tawv hnyav yuav tsum tsis txhob muab tso rau ntev heev thiab yuav tsum tsis txhob dhau-sanded.
(3) Lub hauv paus txheej yog nyuaj heev. Lub hauv paus txheej resin raug xaiv tsis raug lossis tus nqi tsis txaus. Qhov kev daws teeb meem yog txhawm rau nce qhov feem pua ntawm cov khoom muag muag hauv lub hauv paus txheej txheej.
5. Cov teeb meem tawg
Thaum cov tawv nqaij yog khoov los yog ncab nyuaj, cov xim qee zaum yuav sib dua, uas feem ntau hu ua astigmatism. Hauv qhov xwm txheej hnyav, txheej txheej txheej yuav tawg, uas feem ntau hu ua tawg. Qhov no yog ib qho teeb meem.
Cov laj thawj tseem ceeb yog:
(1) Lub elasticity ntawm cov tawv nqaij yog loj heev (lub elongation ntawm lub Upper tawv nqaij yuav tsis muaj ntau tshaj 30%), thaum lub elongation ntawm txheej yog me me heev. Qhov kev daws teeb meem yog los kho cov qauv kom lub elongation ntawm txheej yog ze rau ntawm cov tawv nqaij.
(2) Lub hauv paus txheej yog nyuaj heev thiab cov txheej saum toj kawg nkaus yog qhov nyuaj heev. Kev daws teeb meem yog kom nce cov khoom muag muag muag, nce tus nqi ntawm zaj duab xis-ua tus neeg sawv cev, thiab txo cov nyiaj cob qhia nyuaj thiab pigment muab tshuaj txhuam.
(3) Cov txheej txheej yog nyias dhau, thiab txheej txheej txheej ntawm cov kua roj vanish yog txau hnyav heev, uas ua rau cov txheej txheej puas. Yuav kom daws tau qhov teeb meem ntawm kev ntub dej ntub dej ntawm cov txheej txheem, qee lub tuam txhab tshuaj tsuag cov kua roj vanish ntau dhau. Tom qab daws qhov teeb meem ntawm kev ntub dej ntub dej, qhov teeb meem ntawm kev tawg yog tshwm sim. Yog li ntawd, yuav tsum tau them nyiaj rau kev sib npaug.
6. Qhov teeb meem ntawm slurry shedding
Thaum siv cov khau tawv tawv, nws yuav tsum muaj kev hloov pauv ib puag ncig. Yog hais tias lub txheej tsis ruaj khov, lub txheej yuav feem ntau slurry shedding. Hauv qhov xwm txheej hnyav, kev delamination yuav tshwm sim, uas yuav tsum tau muab siab rau. Cov laj thawj tseem ceeb yog:
(1) Nyob rau hauv qab txheej, cov resin xaiv muaj zog adhesion. Txoj kev daws teeb meem yog txhawm rau nce qhov sib npaug ntawm cov nplaum nplaum hauv qab txheej txheej. Qhov adhesion ntawm cov resin nyob ntawm nws cov khoom siv tshuaj thiab qhov loj ntawm cov khoom tawg ntawm cov emulsion. Thaum cov txheej txheem tshuaj ntawm cov resin txiav txim siab, qhov adhesion muaj zog dua thaum cov emulsion hais zoo dua.
(2) Tsis txaus txheej txheej. Thaum lub sij hawm txheej txheej, yog tias cov txheej txheem tsis txaus, cov resin tsis tuaj yeem nkag mus rau hauv cov tawv nqaij hauv lub sijhawm luv luv thiab tsis tuaj yeem tiv tauj tag nrho cov tawv nqaij, qhov ceev ntawm txheej yuav raug txo kom tsawg. Lub sijhawm no, kev ua haujlwm yuav tsum tau hloov kho kom tsim nyog los xyuas kom meej cov txheej txheem txaus. Kev siv txhuam txheej es tsis txhob siv cov tshuaj txau tuaj yeem ua rau lub sijhawm nkag mus ntawm cov resin thiab thaj chaw adhesion ntawm tus neeg sawv cev txheej rau tawv.
(3) Kev cuam tshuam ntawm cov tawv nqaij dawb paug ntawm adhesion ceev ntawm txheej. Thaum cov dej nqus ntawm cov tawv nqaij tsis zoo heev los yog muaj roj thiab plua plav ntawm cov tawv nqaij, cov resin tsis tuaj yeem nkag mus rau tawv tawv raws li qhov tsim nyog, yog li qhov adhesion tsis txaus. Nyob rau lub sijhawm no, cov tawv nqaij yuav tsum tau kho kom zoo kom nws nqus dej, xws li ua haujlwm ntxuav lub ntsej muag, lossis ntxiv tus neeg sawv cev los yog tus neeg nkag mus rau cov mis.
(4) Nyob rau hauv txheej txheej, qhov piv ntawm resin, additives thiab pigments yog tsis tsim nyog. Txoj kev daws teeb meem yog los kho hom thiab tus nqi ntawm cov resin thiab additives thiab txo cov wax thiab muab tub lim.
7. Cov teeb meem kub thiab siab tsis kam
Cov tawv tawv sab saud siv hauv molded thiab txhaj tshuaj molded khau ntau lawm yuav tsum tau kub thiab siab resistant. Feem ntau, cov chaw tsim khoom khau feem ntau siv cov cua kub kub los ua kom cov tawv nqaij tawm ntawm cov tawv nqaij, ua rau qee cov dyes los yog cov organic coatings nyob rau hauv lub txheej kom tig dub los yog txawm ua nplaum thiab poob.
Cov laj thawj tseem ceeb yog:
(1) Lub thermoplasticity ntawm cov kua tiav yog siab dhau. Txoj kev daws teeb meem yog los kho cov mis thiab nce tus nqi ntawm casein.
(2) Tsis muaj lubrication. Txoj kev daws teeb meem yog ntxiv cov wax nyuaj me ntsis thiab tus neeg saib xyuas zoo los pab txhim kho lubricity ntawm tawv.
(3) Dyes thiab organic coatings yog rhiab rau cua sov. Txoj kev daws teeb meem yog xaiv cov khoom uas tsis tshua muaj kev kub ntxhov thiab tsis ploj mus.
8. Teeb meem teeb meem
Tom qab raug rau ib lub sij hawm, qhov saum npoo ntawm tawv yuav tsaus thiab daj, ua rau nws siv tsis tau. Cov laj thawj yog:
(1) Cov tawv nqaij tawv tawv yog tshwm sim los ntawm cov roj, cov tannins los yog hluavtaws tannins. Lub teeb tsis kam ntawm lub teeb-xim tawv yog qhov taw qhia tseem ceeb heev, thiab cov roj thiab tannins nrog lub teeb pom kev zoo yuav tsum tau xaiv.
(2) Txheej discoloration. Qhov kev daws teeb meem yog tias rau cov tawv tawv tawv nrog lub teeb pom kev zoo, tsis txhob siv cov tshuaj butadiene, cov tshuaj tsw qab polyurethane thiab nitrocellulose cov kua roj vanish, tab sis siv cov resins, pigments, dye dej thiab kua roj vanish nrog lub teeb zoo dua.
9. Txias tsis kam (huab cua tsis kam) teeb meem
Tsis zoo txias tsis kam yog feem ntau yog tshwm sim nyob rau hauv lub cracking ntawm lub txheej thaum cov tawv ntsib tsawg kub. Cov laj thawj tseem ceeb yog:
(1) Thaum qhov kub thiab txias, lub txheej tsis muaj softness. Resins nrog kev ua haujlwm txias zoo xws li polyurethane thiab butadiene yuav tsum tau siv, thiab cov ntaub ntawv tsim cov yeeb yaj kiab uas tsis muaj qhov tsis zoo xws li acrylic resin thiab casein yuav tsum raug txo.
(2) Qhov feem ntawm cov resin nyob rau hauv cov txheej txheem yog tsawg dhau. Qhov kev daws teeb meem yog txhawm rau kom cov resin ntau ntxiv.
(3) Qhov txias tsis kam ntawm cov kua roj vanish sab saud yog qhov tsis zoo. Cov kua roj vanish tshwj xeeb lossis ,-cov kua roj vanish tuaj yeem siv los txhim kho qhov txias ntawm tawv tawv, thaum nitrocellulose cov kua roj vanish muaj qhov tsis zoo txias.
Nws yog ib qho nyuaj heev los tsim cov ntsuas kev ua tau zoo ntawm lub cev rau cov tawv tawv, thiab nws tsis yog qhov tseeb uas yuav tsum muaj cov chaw tsim khoom khau los yuav tag nrho raws li lub cev thiab tshuaj ntsuas ntsuas tau tsim los ntawm lub xeev lossis cov lag luam. Cov tuam txhab khau feem ntau tshawb xyuas tawv raws li cov txheej txheem tsis yog txheej txheem, yog li kev tsim cov tawv tawv tsis tuaj yeem raug cais tawm. Nws yog ib qho tsim nyog yuav tsum muaj kev nkag siab zoo txog cov kev cai yooj yim ntawm cov txheej txheem shoemaking thiab hnav kom ua tiav kev tswj hwm kev tshawb fawb thaum lub sijhawm ua haujlwm.
Post lub sij hawm: May-11-2024