Dipping cov khoom siv kho mob: dab tsi koj yuav tsum paub

Thaum nws los txog rau cov kua roj hmab emulsion dipping cov khoom, cov txheej txheem txheej txheem yuav tsum tau ua kom tiav kom zoo molding, vulcanization thiab nto kho kom tau raws li cov neeg xav tau kev pab nyob rau hauv daim ntawv thov zaum kawg. Dip molding tuaj yeem tsim cov khoom siv kho mob ruaj khov ntawm ntau yam duab, qhov ntau thiab tsawg thiab cov phab ntsa tuab, nrog rau kev sojntsuam npog, hauv qab, caj dab ntsaws ruaj ruaj, hnab looj tes phais, lub plawv balloons thiab lwm yam tshwj xeeb. Cov roj hmab ntuj muaj qhov ua tau zoo thiab muaj zog tensile siab, tab sis nws kuj muaj cov protein uas tuaj yeem ua rau muaj kev tsis haum rau tib neeg lub cev. Hauv qhov sib piv, hluavtaws neoprene thiab hluavtaws polyisoprene tsis ua rau muaj kev fab tshuaj. Neoprene tuaj yeem tiv taus qhov kev sim ntawm ntau yam; Nws yog resistant rau hluav taws kub, roj (nruab nrab), huab cua, ozone cracking, puas thiab flex cracking, alkali thiab acid kuj. Nyob rau hauv cov nqe lus ntawm kev xav thiab yooj, polyisoprene yog ib tug nyob ze hloov rau tej yam ntuj tso roj hmab thiab muaj zoo huab cua tsis kam tshaj cov roj hmab latex. Txawm li cas los xij, polyisoprene tau txi qee lub zog tensile, tsim kua muag, thiab compression teeb. Lub sij hawm "impregnation" hais txog kev ua haujlwm nyob rau hauv daim ntawv ntawm impregnation. Qhov tseeb, raws li kev ua raws li kev ua tiav, lub rooj yuav muab tso rau hauv cov khoom siv. Nws yog ib qho tseem ceeb heev kom paub tseeb tias cov qauv roj hmab ua tau raws li FDA cov lus qhia thiab cov kev cai. Cov txheej txheem impregnation tuaj yeem ua tus yam ntxwv raws li kev hloov pauv ib ntus: cov roj hmab tau hloov pauv los ntawm cov kua rau hauv cov khoom, thiab tom qab ntawd hloov pauv hloov mus rau hauv cov vulcanized molecular network. Qhov tseem ceeb tshaj, cov txheej txheem tshuaj hloov cov roj hmab los ntawm cov yeeb yaj kiab uas tsis yooj yim rau hauv lub network ntawm cov molecules uas tuaj yeem ncab thiab deformed, thiab tseem rov qab mus rau nws qhov qub. Cov txheej txheem solidification tsis yog ib txwm tsim nyog rau tag nrho cov txheej txheem "dipping", tab sis nws tseem ceeb heev rau peb cov txheej txheem ua tiav. Roj hmab tuaj yeem hloov tau los ntawm cov kua rau cov khoom los ntawm huab cua kom qhuav, tab sis qhov no yuav siv sij hawm ntev. Ib co nyias-walled qhov chaw yog tsim nyob rau hauv no txoj kev. Cov txheej txheem solidification siv cov tshuaj los yuam kom lub cev lub cev hloov pauv. Cov coagulant yog sib tov los yog tov ntsev, surfactant, thickener, thiab tso tawm tus neeg sawv cev nyob rau hauv ib tug hnyav (feem ntau yog dej). Hauv qee cov txheej txheem, cawv kuj tuaj yeem siv los ua cov kuab tshuaj. Cov cawv evaporates sai sai thiab muaj me ntsis residue. Qee cov dej-raws li coagulants xav tau kev pab ntawm qhov cub lossis lwm txoj hauv kev kom qhuav cov coagulant. Lub ntsiab tseem ceeb ntawm coagulant yog ntsev (calcium nitrate), uas yog cov khoom pheej yig uas muab qhov zoo tshaj plaws coagulation uniformity nyob rau hauv daim ntawv impregnated. Cov surfactant yog siv los ntub cov impregnated daim ntawv thiab xyuas kom meej tias ib tug du, uniform txheej ntawm coagulant yog tsim nyob rau hauv daim ntawv. Tus neeg sawv cev tso tawm, xws li calcium carbonate, yog siv rau hauv cov txheej txheem coagulant los pab tshem tawm cov roj hmab kho los ntawm daim ntawv dipped. Tus yuam sij rau coagulant kev ua tau zoo muaj xws li txheej txheej, evaporation sai, cov khoom kub, kev nkag mus thiab rov qab ceev, thiab kev hloov kho yooj yim lossis kev saib xyuas ntawm calcium concentration. Qhov no yog theem uas cov roj hmab hloov ntawm cov kua rau cov khoom. Tus neeg sawv cev tshuaj uas txhawb kev coagulation, lub coagulant, yog tam sim no siv rau daim ntawv impregnated thiab qhuav. Daim ntawv yog "tso", los yog muab tso rau hauv lub tank ua kua roj hmab. Thaum cov roj hmab nkag mus rau hauv lub cev nrog cov coagulant, cov calcium hauv coagulant yuav ua rau cov roj hmab tsis ruaj khov thiab hloov ntawm cov kua mus rau cov khoom. Qhov ntev ntawm tus qauv yog immersed, lub thicker phab ntsa. Cov tshuaj tiv thaiv tshuaj no yuav txuas ntxiv mus txog thaum tag nrho cov calcium tau noj los ntawm coagulant. Tus yuam sij rau latex dipping muaj xws li inlet thiab qhov hluav taws xob ceev, latex kub, uniformity ntawm coagulant txheej, thiab tswj pH, viscosity thiab tag nrho cov ntsiab lus ntawm cov roj hmab. Cov txheej txheem leaching yog qhov ua tau zoo tshaj plaws rau kev tshem tawm cov tshuaj tsis zoo hauv dej los ntawm cov khoom kawg. Lub sijhawm zoo tshaj plaws los tshem tawm cov khoom tsis xav tau los ntawm cov yeeb yaj kiab impregnated yog leaching ua ntej kho. Cov khoom siv tseem ceeb suav nrog coagulant (calcium nitrate) thiab roj hmab (natural (NR); neoprene (CR); polyisoporene (IR); nitrile (NBR)). Kev leaching tsis txaus tuaj yeem ua rau "hws", cov yeeb yaj kiab nplaum rau ntawm cov khoom tiav, thiab muaj kev pheej hmoo ntawm adhesion tsis ua hauj lwm thiab kev tsis haum tshuaj. Tus yuam sij rau leaching kev ua tau zoo suav nrog dej zoo, dej kub, sijhawm nyob thiab dej ntws. Cov kauj ruam no yog ob kauj ruam ua haujlwm. Cov dej hauv cov yeeb yaj kiab roj hmab raug tshem tawm, thiab dhau sij hawm, qhov kub ntawm qhov cub yuav qhib lub accelerator thiab pib txheej txheem curing los yog vulcanization. Thaum optimizing lub cev zoo tshaj plaws ntawm ntau hom roj hmab, lub sijhawm kho thiab kho qhov kub yog qhov tseem ceeb. Muaj ntau txoj hauv kev los kho qhov chaw ntawm qhov dipped kom cov khoom yuav tsis lo. Cov kev xaiv muaj xws li cov hmoov av, polyurethane txheej, silicone ntxuav, chlorination thiab xab npum ntxuav. Nws yog hais txog dab tsi cov neeg siv khoom xav tau lossis xav tau los ua kom lawv cov khoom tiav. Subscription kho mob tsim thiab outsourcing. Bookmark, sib qhia thiab sib cuam tshuam nrog cov kws kho mob tsim engineering cov ntawv xov xwm niaj hnub no. DeviceTalks yog kev sib tham ntawm cov thawj coj kho mob. Nws yog cov xwm txheej, podcasts, webinars, thiab kev sib pauv tswv yim thiab kev nkag siab ib leeg. Cov khoom siv kho mob ua lag luam magazine. MassDevice yog cov khoom siv kho mob tshaj tawm xov xwm kev lag luam uas qhia zaj dab neeg ntawm cov cuab yeej cawm siav.