Yuav ua li cas kom txo cov ntsiab lus formaldehyde hauv cov txheej txheem tsim khoom ntawm silicone lub duav pads?

1. Kev tshuaj xyuas cov khoom siv formaldehyde
1.1 Kev Taw Qhia Txog Cov Khoom Siv Raw
Hauv kev tsim cov silicone hip pads, cov ntaub ntawv raw yog qhov tseem ceeb ntawm formaldehyde pollution. Qee cov ntaub ntawv silicone raw yuav raug ntxiv nrog formaldehyde-muaj additives thaum lub sijhawm tsim khoom los txhim kho kev ua tau zoo ntawm silicone, xws li txhim kho nws qhov yooj lossis ruaj khov. Raws li kev tshawb fawb cuam tshuam, cov ntsiab lus formaldehyde hauv qee cov ntaub ntawv silicone tsis zoo tuaj yeem siab txog 300mg / kg, uas yog deb dhau tus qauv kev nyab xeeb. Tsis tas li ntawd, cov kua nplaum siv los khi cov khoom silicone kuj tseem yuav muaj formaldehyde. Txhawm rau kom txo cov nqi, qee cov kua nplaum tsis zoo siv formaldehyde ua cov khoom siv raw lossis tshuaj tiv thaiv, thiab cov formaldehyde tso tawm tuaj yeem ncav cuag ntau dua 500mg / kg. Cov formaldehydes no yuav maj mam tso tawm thaum siv cov silicone hip pads, ua rau muaj kev phom sij rau tib neeg kev noj qab haus huv.
1.2 Cov txheej txheem tsim khoom
Cov txheej txheem tsim khoom ntawmsilicone duav ncoos kuj tseem yuav ua rau muaj formaldehyde. Thaum lub sijhawm ua cov txheej txheem molding kub siab, yog tias qhov kub tsis raug tswj kom zoo, qee cov khoom organic hauv silicone yuav lwj thiab tsim formaldehyde. Piv txwv li, thaum qhov kub tshaj 200 ° C, cov organic silanol pawg hauv qee cov silicones yuav lwj thiab tso formaldehyde. Tsis tas li ntawd, qhov cua tsis zoo thaum lub sijhawm tsim khoom kuj tseem tuaj yeem ua rau formaldehyde sib sau ua ke hauv lub hoobkas. Raws li kev sim, qhov concentration formaldehyde hauv lub hoobkas uas tsis muaj cua tsis zoo tuaj yeem ncav cuag 0.5mg / m³, uas yog siab dua li tus qauv hauv tsev formaldehyde concentration ntawm 0.08mg / m³. Qhov no tsis tsuas yog cuam tshuam rau kev noj qab haus huv ntawm cov neeg ua haujlwm, tab sis kuj tseem yuav ua rau cov khoom nqus tau ntau dua formaldehyde thaum lub sijhawm tsim khoom, ua rau cov ntsiab lus formaldehyde ntau ntxiv hauv cov khoom.

2. Kev ntsuas tswj cov khoom siv raw
2.1 Xaiv cov khoom siv silicone zoo
Kev xaiv cov khoom siv silicone zoo yog thawj kauj ruam tseem ceeb los txo cov ntsiab lus formaldehyde ntawm cov ntaub qhwv silicone. Cov khoom siv silicone zoo tswj hwm kev siv cov khoom ntxiv thaum lub sijhawm tsim khoom kom tsis txhob ntxiv cov tshuaj uas muaj formaldehyde. Piv txwv li, cov ntsiab lus formaldehyde ntawm silicone tsim los ntawm qee lub tuam txhab muag khoom siv silicone paub zoo tuaj yeem tswj tau qis dua 10mg / kg, uas qis dua cov ntsiab lus formaldehyde ntawm cov khoom siv tsis zoo. Thaum yuav khoom, cov tuam txhab yuav tsum xav kom cov neeg muag khoom muab cov ntawv ceeb toom tshuaj xyuas zoo rau cov khoom siv raw thiab qhia meej cov cim tseem ceeb xws li cov ntsiab lus formaldehyde. Tsis tas li ntawd, cov tuam txhab lag luam tuaj yeem tsim kom muaj kev sib raug zoo ntev nrog cov neeg muag khoom los koom ua ke tsim cov khoom siv silicone qis-formaldehyde lossis txawm tias tsis muaj formaldehyde kom txo qhov kev qhia txog formaldehyde los ntawm qhov chaw.
2.2 Kev tshuaj xyuas nruj ntawm cov khoom ntxiv
Hauv kev tsim cov silicone hip pads, kev siv cov additives yog qhov tsis zam, tab sis lawv yuav tsum tau kuaj xyuas nruj me ntsis. Rau cov additives uas txhim kho kev ywj pheej thiab kev ruaj khov, cov khoom tsis muaj formaldehyde lossis cov khoom tsis muaj formaldehyde yuav tsum tau nyiam. Piv txwv li, qee cov additives tshiab uas tsis muaj kev phom sij rau ib puag ncig muaj kev tso tawm formaldehyde yuav luag tsis muaj txiaj ntsig thiab zoo sib xws hauv kev ua tau zoo rau cov additives uas muaj formaldehyde. Thaum xaiv cov kua nplaum, cov khoom tsis zoo nrog formaldehyde ua cov khoom siv raw lossis cov tshuaj preservative yuav tsum zam. Muaj ntau yam kua nplaum tsis muaj formaldehyde muaj nyob rau hauv kev ua lag luam, thiab lawv cov khoom sib txuas ruaj khov thiab tuaj yeem ua tau raws li qhov xav tau ntau lawm. Cov lag luam yuav tsum ua qhov kev sim nruj ntawm cov additives ua ntej siv kom ntseeg tau tias lawv cov ntsiab lus formaldehyde ua tau raws li cov qauv. Tib lub sijhawm, tsim kom muaj kev soj ntsuam rau cov neeg muab khoom ntxiv, tshuaj xyuas cov khoom zoo ntawm cov neeg muab khoom, thiab xyuas kom meej tias cov additives siv ib txwm ua tau raws li kev tiv thaiv ib puag ncig thiab kev nyab xeeb.

3. Kev txhim kho cov txheej txheem ntau lawm
3.1 Kev kho cov txheej txheem vulcanization
Cov txheej txheem vulcanization yog qhov txuas tseem ceeb hauv kev tsim cov silicone duav pads, thiab kev hloov kho kom haum ntawm nws cov kev ntsuas yog qhov tseem ceeb rau kev txo cov ntsiab lus formaldehyde.
Kev tswj qhov kub thiab txias: Cov kev tshawb fawb tau qhia tias thaum qhov kub thiab txias ntawm vulcanization raug tswj ntawm 150 ℃ ~ 180 ℃, qhov ua tau ntawm cov khoom organic hauv silicone decomposing thiab tsim formaldehyde raug txo qis heev. Hauv qhov kub thiab txias no, silicone tuaj yeem ua tiav qhov kev sib xyaw vulcanization zoo, thaum zam kev pheej hmoo ntawm formaldehyde tso tawm los ntawm qhov kub siab. Piv txwv li, ib lub tuam txhab txo cov ntsiab lus formaldehyde hauv cov khoom los ntawm kwv yees li 30% los ntawm kev kho qhov kub thiab txias ntawm vulcanization los ntawm 200 ℃ txog 170 ℃.
Kev Tswj Lub Sijhawm: Lub sijhawm vulcanization tsim nyog pab silicone kom sib txuas tag nrho, tsim cov qauv network ruaj khov, thiab txo qhov tsim ntawm formaldehyde. Feem ntau, lub sijhawm vulcanization yuav tsum tau teeb tsa kom raug raws li hom silicone thiab qhov tuab ntawm cov khoom. Rau cov silicone duav feem ntau, lub sijhawm vulcanization raug pom zoo kom tswj hwm ntawm 10 feeb txog 15 feeb. Lub sijhawm luv dhau yuav ua rau vulcanization tsis tiav thiab cuam tshuam rau cov khoom zoo; lub sijhawm ntev dhau yuav ua rau muaj kev tsis haum tshuaj tsis tsim nyog. Cov ntaub ntawv qhia tau tias thaum lub sijhawm vulcanization ntev dua los ntawm 8 feeb txog 12 feeb, cov ntsiab lus formaldehyde ntawm cov khoom tuaj yeem txo qis li 25%.
Kev kho qhov siab: Qhov siab vulcanization tsim nyog tuaj yeem txhawb kev sib txuas ze ntawm cov molecules silicone thiab txo qhov kev lwj ntawm cov khoom organic. Feem ntau, qhov siab vulcanization yuav tsum tau tswj hwm ntawm 5MPa ~ 10MPa. Hauv qhov ntau ntawm qhov siab no, silicone tuaj yeem raug kev nyuaj siab sib npaug thiab ua tiav cov txheej txheem vulcanization zoo. Kev sim qhia tau tias los ntawm kev nce qhov siab vulcanization ntawm 4MPa mus rau 8MPa, cov ntsiab lus formaldehyde hauv lub duav silicone tuaj yeem txo qis li 20%, thiab cov khoom siv lub cev ntawm cov khoom kuj tau txhim kho zoo heev.
3.2 Optimize cov txheej txheem molding
Kev ua kom zoo dua ntawm cov txheej txheem molding tuaj yeem txo qhov tsim thiab cov seem ntawm formaldehyde.
Kev Txhim Kho Kev Tsim Pwm: Tsim cov qauv thiab qhov loj ntawm pwm kom zoo kom ntseeg tau tias cov silicone tau cua sov sib npaug thaum lub sijhawm molding kom tsis txhob muaj kev kub dhau hauv zos thiab formaldehyde tso tawm. Kev siv cov pwm sib cais tuaj yeem ua rau silicone cua sov sib npaug thaum lub sijhawm molding thiab txo qhov kev lwj ntawm cov khoom organic uas tshwm sim los ntawm qhov kub tsis sib xws. Tsis tas li ntawd, kev ua kom zoo dua ntawm lub kaw lus tso pa tawm ntawm pwm tuaj yeem tso tawm cov roj tsim tawm thaum lub sijhawm molding, suav nrog cov formaldehyde uas ua tau, thiab txo cov formaldehyde seem hauv cov khoom. Tom qab ib lub tuam txhab tau txais yuav cov qauv pwm tshiab, cov ntsiab lus formaldehyde ntawm cov khoom tau txo qis 15%.
Kev kho qhov kub thiab lub sijhawm molding: Zoo ib yam li cov txheej txheem vulcanization, kev tswj hwm qhov kub thiab lub sijhawm molding tseem ceeb ib yam. Kev tswj qhov kub thiab lub sijhawm molding ntawm 140 ℃ ~ 160 ℃ thiab lub sijhawm molding ntawm 5 feeb ~ 10 feeb tsis tsuas yog ua kom ntseeg tau tias qhov zoo ntawm cov silicone hip pad, tab sis kuj txo qhov tsim ntawm formaldehyde. Cov ntaub ntawv sim qhia tau tias hauv qhov kub thiab lub sijhawm no, cov ntsiab lus formaldehyde ntawm cov khoom tuaj yeem txo qis li 35%, thiab qhov tsos thiab kev ua tau zoo ntawm cov khoom ua tau raws li cov qauv zoo heev.
Kev ua kom lub tshuab cua zoo dua: Lub tshuab cua zoo tuaj yeem tso cov pa roj formaldehyde tawm hauv lub hoobkas kom raws sijhawm kom tiv thaiv nws kom tsis txhob nqus tau rau ntawm qhov chaw ntawm cov khoom thaum lub sijhawm tsim khoom. Kev teeb tsa cov khoom siv cua zoo hauv lub hoobkas molding kom ntseeg tau tias tus lej ntawm kev hloov pauv cua ib teev ncav cuag ntau dua 10 zaug tuaj yeem txo qhov concentration formaldehyde hauv lub hoobkas kom qis dua 0.05mg / m³, uas qis dua tus qauv hauv tsev formaldehyde. Qhov no tsis yog tsuas yog pab tiv thaiv cov neeg ua haujlwm txoj kev noj qab haus huv, tab sis kuj txo qhov kev nqus ntawm formaldehyde los ntawm cov khoom, yog li cov ntsiab lus formaldehyde ntawm cov khoom kawg ua tau raws li cov qauv kev nyab xeeb.

4. Kev kuaj xyuas thiab kev saib xyuas zoo
4.1 Tsim kom muaj cov qauv kuaj formaldehyde
Kev tsim cov qauv kuaj formaldehyde nruj heev yog qhov txuas tseem ceeb hauv kev ua kom zoo thiab kev nyab xeeb ntawm cov ntaub qhwv silicone. Tam sim no, lub tebchaws muaj cov qauv txwv meej rau cov ntsiab lus formaldehyde ntawm cov khoom silicone. Piv txwv li, cov pa tawm formaldehyde hauvcov khoom siv siliconeyuav tsum tsis pub tshaj 0.05mg/m²·h. Raws li qhov no, cov lag luam yuav tsum tsim kom muaj cov qauv kev xeem sab hauv uas nruj dua ua ke nrog lawv cov yam ntxwv khoom thiab cov kev xav tau zoo dua. Piv txwv li, lub tuam txhab khoom silicone paub zoo teeb tsa cov qauv formaldehyde cov ntsiab lus ntawm silicone lub duav pads kom tsis pub ntau tshaj 0.03mg/m²·h, uas qis dua li tus qauv hauv tebchaws thiab lav qhov kev nyab xeeb ntawm cov khoom. Hauv cov txheej txheem xeem, cov thev naus laus zis xeem siab heev xws li kev ua haujlwm siab chromatography kua (HPLC) lossis roj chromatography (GC) tuaj yeem siv tau. Cov txheej txheem no muaj cov yam ntxwv ntawm kev rhiab heev, kev xaiv siab, kev ceev thiab qhov tseeb, thiab tuaj yeem ntsuas cov ntsiab lus formaldehyde hauv silicone lub duav pads kom raug. Tib lub sijhawm, cov lag luam yuav tsum tsis tu ncua calibrate thiab tswj cov khoom siv xeem kom ntseeg tau tias qhov tseeb thiab kev ntseeg siab ntawm cov txiaj ntsig xeem.
4.2 Kev kuaj cov khoom tsis tu ncua
Kev kuaj xyuas tsis tu ncua yog ib txoj hauv kev tseem ceeb los xyuas kom meej tias cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone txuas ntxiv ua tau raws li cov qauv. Cov lag luam yuav tsum tsim cov phiaj xwm tshuaj xyuas cov qauv kom ntxaws, qhia qhov zaus, qhov loj me ntawm cov qauv thiab qhov ntau thiab tsawg ntawm kev tshuaj xyuas cov qauv. Piv txwv li, kev tshuaj xyuas cov qauv ntawm cov ntaub qhwv caj dab silicone ntawm cov kab ntau lawm yog ua ib hlis ib zaug, nrog rau qhov loj me ntawm cov qauv tsis pub tsawg dua 10 daim txhua zaus, suav nrog cov khoom ntawm ntau pawg thiab hnub tsim khoom. Thaum lub sijhawm tshuaj xyuas cov qauv, cov qauv tshuaj xyuas formaldehyde raug ua raws li nruj me ntsis, thiab cov txiaj ntsig ntawm kev xeem raug kaw thiab tshuaj xyuas kom meej. Thaum pom cov khoom uas muaj cov ntsiab lus formaldehyde ntau dhau, cov txheej txheem taug qab yuav tsum pib tam sim ntawd kom nrhiav tau qhov ua rau muaj teeb meem, xws li cov teeb meem zoo ntawm cov khoom siv raw, kev hloov pauv ntawm cov txheej txheem tsim khoom, thiab lwm yam, thiab ua cov kev ntsuas kho kom raug, xws li hloov cov neeg muab khoom siv raw, kho cov txheej txheem tsim khoom, thiab lwm yam. Tib lub sijhawm, kev tshawb nrhiav thiab kev kho mob ntawm tib pawg khoom uas tau tsim tawm yuav tsum tau ua kom tiv thaiv cov khoom tsis tsim nyog los ntawm kev nkag mus rau hauv kev ua lag luam. Los ntawm kev kuaj xyuas cov qauv tsis tu ncua thiab kev ntsuas kev kho mob nruj heev, qhov ruaj khov zoo ntawm cov ntaub qhwv caj dab silicone tuaj yeem lav tau zoo thiab cov neeg siv khoom ntseeg siab rau cov khoom tuaj yeem txhim kho.

5. Kev tswj hwm ib puag ncig thiab cov khoom siv
5.1 Kev ua pa hauv chaw ua haujlwm
Qhov cua hauv chaw ua haujlwm yog qhov tseem ceeb ntawm kev tswj hwm ib puag ncig kom txo cov ntsiab lus formaldehyde hauv cov txheej txheem tsim cov ntaub qhwv silicone.
Kev tsim lub tshuab cua: Lub chaw ua haujlwm yuav tsum tau nruab nrog lub tshuab cua zoo kom ntseeg tau tias huab cua ncig zoo. Kev tsim lub tshuab cua yuav tsum txiav txim siab raws li qhov kev teeb tsa ntawm lub chaw ua haujlwm, kev faib khoom siv ntau lawm, thiab kev tso tawm formaldehyde thaum lub sijhawm tsim khoom. Piv txwv li, kev sib xyaw ua ke ntawm kev ua pa tshuab thiab kev ua pa ntuj tau txais yuav, thiab huab cua hauv lub chaw ua haujlwm tuaj yeem hloov kho sai sai los ntawm kev teeb tsa cov khoom siv cua muaj zog thiab teeb tsa qhov chaw ntawm cov qhov cua. Raws li kev tshawb fawb, lub tshuab cua zoo tuaj yeem txo qhov concentration formaldehyde hauv lub chaw ua haujlwm ntau dua 50%.
Cov kev cai ntawm qhov cua: Yuav kom tso tawm cov pa roj formaldehyde hauv lub chaw ua haujlwm tau zoo, qhov cua ntawm lub tshuab cua yuav tsum ua tau raws li qee tus qauv. Feem ntau, qhov cua ntawm lub chaw ua haujlwm tsim cov ntaub qhwv silicone yuav tsum tsis pub tsawg dua 12 zaug / teev. Piv txwv li, tom qab ib lub tuam txhab siv qhov cua ntawm 15 zaug ib teev, qhov concentration formaldehyde hauv lub chaw ua haujlwm tau txo qis los ntawm thawj 0.3mg / m³ mus rau 0.06mg / m³, uas qis dua tus qauv hauv tsev formaldehyde concentration, uas tsis tsuas yog txhim kho qhov chaw ua haujlwm ntawm cov neeg ua haujlwm, tab sis kuj txo qhov adsorption ntawm formaldehyde los ntawm cov khoom.
Kev saib xyuas cov khoom siv cua: Kev saib xyuas thiab kev saib xyuas cov khoom siv cua tsis tu ncua yog qhov tseem ceeb rau kev ua kom lub tshuab cua ua haujlwm li qub. Cov lag luam yuav tsum tsim cov phiaj xwm saib xyuas cov khoom siv cua kom ntxaws, suav nrog kev tshuaj xyuas tsis tu ncua ntawm qhov xwm txheej ua haujlwm ntawm cov khoom siv cua, kev ntxuav cov kav dej cua, hloov cov lim dej, thiab lwm yam. Piv txwv li, kev tshuaj xyuas thiab kev saib xyuas cov khoom siv cua txhua peb lub hlis twg tuaj yeem ua kom ntseeg tau tias qhov ua haujlwm ntawm lub tshuab cua zoo ib txwm nyob rau theem siab, yog li txo qhov concentration ntawm formaldehyde hauv lub Hoobkas.
5.2 Kev ntxuav thiab kev saib xyuas cov khoom siv
Kev ntxuav thiab kev saib xyuas cov khoom siv ntau lawm kuj tseem ceeb heev rau kev txo cov ntsiab lus formaldehyde hauv cov txheej txheem tsim khoom ntawm silicone lub duav.
Kev ntxuav zaus thiab txoj kev: Cov khoom siv tsim khoom yuav tsum tau ntxuav tas li kom tiv thaiv cov khoom siv silicone seem kom tsis txhob lwj rau ntawm qhov chaw ntawm cov khoom siv los tsim cov formaldehyde. Kev ntxuav zaus yuav tsum tau txiav txim siab raws li kev siv cov khoom siv thiab cov yam ntxwv ntawm cov khoom tsim tawm. Piv txwv li, rau cov khoom siv molding, kev ntxuav qhov chaw yuav tsum tau ua tom qab txhua qhov kev tsim khoom kom tshem tawm cov khoom seem silicone thiab cov khoom tsis huv. Txoj kev ntxuav tuaj yeem yog kev sib xyaw ua ke ntawm kev ntxuav lub cev thiab kev ntxuav tshuaj, xws li siv txhuam mos mos los tshem tawm cov hmoov av thiab cov khoom seem ntawm qhov chaw ntawm cov khoom siv, thiab tom qab ntawd so nws nrog cov tshuaj ntxuav formaldehyde-free detergent kom ntseeg tau tias qhov chaw ntawm cov khoom siv huv thiab tsis muaj cov khoom seem.
Txoj kev npaj kho cov khoom siv: Tsim ib txoj kev npaj kho cov khoom siv kom ntxaws thiab tshuaj xyuas thiab tswj cov khoom siv ntau lawm kom txo tau cov formaldehyde uas tshwm sim los ntawm kev ua tsis tiav ntawm cov khoom siv. Txoj kev npaj kho yuav tsum suav nrog kev tshuaj xyuas, kev sib xyaw, kev hloov pauv thiab lwm yam kev ua haujlwm ntawm cov khoom siv tseem ceeb. Piv txwv li, tshuaj xyuas qhov kev ua haujlwm ntawm cov pwm molding kom tiv thaiv kev kub hnyiab hauv zos los ntawm kev sib khi tsis zoo thiab formaldehyde; kho thiab tswj cov cua sov ntawm cov khoom siv vulcanization kom ntseeg tau tias qhov tseeb ntawm kev tswj qhov kub thiab txias, yog li txo qhov kev pheej hmoo ntawm formaldehyde tso tawm los ntawm kev hloov pauv kub. Raws li cov ntaub ntawv los ntawm ib lub tuam txhab, tom qab siv txoj kev npaj kho cov khoom siv nruj, cov ntsiab lus formaldehyde hauv cov khoom tau txo qis li 10%.
Kev hloov kho tshiab thiab txhim kho cov khoom siv: Nrog rau kev nce qib ntawm thev naus laus zis, kev hloov kho tshiab thiab txhim kho cov khoom siv tsim khoom raws sijhawm tuaj yeem txo qhov tsim ntawm formaldehyde. Piv txwv li, kev siv cov khoom siv tsim khoom tshiab nrog kev tso tawm formaldehyde tsawg, lossis kev hloov pauv cov khoom siv uas twb muaj lawm, kev teeb tsa cov khoom siv nqus formaldehyde, thiab lwm yam. Ib lub tuam txhab tshwj xeeb tau qhia txog cov khoom siv molding siab heev, thiab cov ntsiab lus formaldehyde ntawm nws cov khoom tau txo qis 20% piv rau tib hom khoom tsim los ntawm cov khoom siv qub, uas qhia tau tias kev hloov kho tshiab thiab txhim kho cov khoom siv muaj txiaj ntsig zoo hauv kev txo cov ntsiab lus formaldehyde.

6. Kev cob qhia thiab kev tswj hwm cov neeg ua haujlwm
6.1 Kev phom sij ntawm formaldehyde thiab kev cob qhia txog kev tiv thaiv
Formaldehyde yog ib yam khoom phom sij uas muaj ntau yam kev phom sij rau tib neeg txoj kev noj qab haus huv. Thaum lub sijhawm tsim cov silicone hip pads, cov neeg ua haujlwm yuav raug rau formaldehyde, yog li nws yog qhov tseem ceeb heev rau kev cob qhia lawv txog kev phom sij thiab kev tiv thaiv formaldehyde.
Kev Paub Txog Kev Phom Sij: Formaldehyde feem ntau nkag mus rau hauv tib neeg lub cev los ntawm txoj hlab pa, daim tawv nqaij thiab txoj hnyuv zom zaub mov. Kev raug rau lub sijhawm luv luv rau cov formaldehyde ntau tuaj yeem ua rau khaus ntawm lub qhov muag, qhov ntswg, caj pas thiab txoj hlab pa, thiab cov tsos mob xws li kua muag, hnoos, thiab ua pa nrov nrov; kev raug rau lub sijhawm ntev rau cov formaldehyde tsawg tsawg tuaj yeem ua rau muaj kev tsis haum tshuaj, kab mob ua pa, thiab txawm tias ua rau muaj kev pheej hmoo ntawm mob qog noj ntshav. Raws li kev tshawb fawb, kev raug rau lub sijhawm ntev rau ib puag ncig nrog cov formaldehyde concentration ntawm 0.1mg / m³ yuav ua rau muaj kev pheej hmoo ntawm mob qog noj ntshav nasopharyngeal los ntawm 30%.
Cov ntsiab lus qhia txog kev tiv thaiv: Cov lag luam yuav tsum npaj kev cob qhia tsis tu ncua los piav qhia txog kev phom sij ntawm formaldehyde rau cov neeg ua haujlwm kom meej kom lawv nkag siab txog qhov tseem ceeb ntawm kev tiv thaiv. Tib lub sijhawm, kev cob qhia yuav tsum npog cov txheej txheem tiv thaiv kom raug, xws li hnav cov khoom siv tiv thaiv tus kheej xws li lub ntsej muag, hnab looj tes, thiab tsom iav. Piv txwv li, kev siv cov pa roj carbon ua kom muaj peev xwm lim tau ntau dua 90% ntawm formaldehyde hauv huab cua, txo qhov kev pheej hmoo ntawm cov neeg ua haujlwm nqus pa formaldehyde. Tsis tas li ntawd, cov neeg ua haujlwm yuav tsum tau qhia txog yuav siv cov khoom siv cua kom raug li cas, nrog rau cov txheej txheem kho mob thaum muaj xwm txheej tsis zoo xws li pom cov formaldehyde xau.
6.2 Cov txheej txheem ua haujlwm txheem
Cov txheej txheem ua haujlwm txheem yog qhov lav tseem ceeb rau kev txo cov ntsiab lus formaldehyde hauv cov txheej txheem tsim cov ntaub qhwv silicone, thiab tseem tuaj yeem ua kom muaj kev noj qab haus huv thiab kev nyab xeeb ntawm cov neeg ua haujlwm.
Kev tsim cov txheej txheem ua haujlwm: Cov lag luam yuav tsum tsim cov txheej txheem ua haujlwm kom ntxaws thiab raws li cov yam ntxwv ntawm cov txheej txheem tsim khoom thiab cov khoom siv. Cov txheej txheem no yuav tsum npog txhua yam los ntawm kev txais, khaws cia, thiab siv cov khoom siv raw mus rau cov khoom molding, kev sim, thiab kev ntim khoom. Piv txwv li, hauv qhov txuas cia cov khoom siv raw, nws tau teev tseg tias cov khoom siv silicone raw thiab cov khoom ntxiv yuav tsum khaws cia rau hauv qhov chaw muaj cua zoo, txias thiab qhuav kom tsis txhob muaj formaldehyde tso tawm vim muaj cov xwm txheej ib puag ncig tsis zoo; hauv qhov txuas molding khoom, qhov kev tswj hwm meej ntawm cov kev cai xws li qhov kub thiab txias vulcanization, lub sijhawm, thiab siab tau piav qhia kom ntseeg tau tias cov neeg ua haujlwm ua raws li tus qauv ua haujlwm thiab txo qhov tsim ntawm formaldehyde.
Kev cob qhia thiab kev ntsuam xyuas: Qhia cov neeg ua haujlwm txog cov txheej txheem ua haujlwm kom lawv thiaj li paub txog cov kev cai ua haujlwm tshwj xeeb ntawm txhua qhov txuas. Tom qab kev cob qhia, muaj kev ntsuam xyuas nruj kom ntseeg tau tias cov neeg ua haujlwm tuaj yeem ua tiav cov txheej txheem ua haujlwm kom raug thiab raug. Piv txwv li, los ntawm kev ua piv txwv qhov chaw ua haujlwm, kev ua haujlwm tiag tiag ntawm cov neeg ua haujlwm tau qhab nia, thiab cov neeg ua haujlwm uas tsis dhau qhov kev ntsuam xyuas tau rov qhia dua kom txog thaum lawv paub txog cov txheej txheem ua haujlwm tus qauv. Raws li cov ntaub ntawv los ntawm ib lub tuam txhab, tom qab siv cov txheej txheem ua haujlwm tus qauv, cov ntsiab lus formaldehyde hauv cov khoom txo qis 15%, thiab kev ua haujlwm ntau ntxiv kuj nce 10%.
Kev Saib Xyuas thiab Kev Tawm Tswv Yim: Tsim kom muaj ib txoj kev saib xyuas kom ntseeg tau tias cov neeg ua haujlwm tuaj yeem ua raws li cov txheej txheem ua haujlwm hauv cov txheej txheem tsim khoom tiag tiag. Npaj cov neeg ua haujlwm tshwj xeeb los tshuaj xyuas cov neeg ua haujlwm cov haujlwm thiab kho cov cwj pwm tsis zoo raws sijhawm. Tib lub sijhawm, txhawb kom cov neeg ua haujlwm muab cov lus qhia rau kev txhim kho cov txheej txheem ua haujlwm kom tsim tau ib txoj hauv kev tawm tswv yim zoo. Piv txwv li, ib lub tuam txhab tau teeb tsa lub thawv tawm tswv yim thiab tuav cov rooj sib tham tsis tu ncua rau cov neeg ua haujlwm los sau cov neeg ua haujlwm cov kev xav thiab cov lus qhia txog cov txheej txheem ua haujlwm, ua kom cov txheej txheem ua haujlwm zoo dua, txo cov ntsiab lus formaldehyde ntxiv, thiab txhim kho cov khoom zoo.

7. Cov Lus Qhia Luv Luv
Los ntawm kev tshawb fawb saum toj no txog kev tswj cov ntsiab lus formaldehyde hauv cov txheej txheem tsim khoom ntawm silicone lub duav, cov lus xaus tseem ceeb thiab cov lus qhia hauv qab no tuaj yeem sau ua ke:
7.1 Cov lus xaus tseem ceeb
Kev xaiv cov khoom siv raw yog qhov tseem ceeb heev: cov khoom siv silicone zoo thiab cov khoom ntxiv uas tsis muaj formaldehyde yog lub hauv paus rau kev txo cov ntsiab lus formaldehyde. Kev xaiv cov khoom siv raw uas muaj cov ntsiab lus formaldehyde tsawg lossis tsis muaj tuaj yeem txo qhov kev nkag mus ntawm formaldehyde los ntawm qhov chaw. Piv txwv li, cov ntsiab lus formaldehyde ntawm silicone tsim los ntawm cov khoom siv silicone paub zoo tuaj yeem tswj tau qis dua 10mg / kg, thaum cov khoom siv raw qis dua tuaj yeem siab txog 300mg / kg.
Qhov kev ua kom zoo tshaj plaws ntawm cov txheej txheem tsim khoom yog qhov tseem ceeb: kev hloov kho kom zoo ntawm cov txheej txheem vulcanization thiab molding, xws li tswj qhov kub vulcanization ntawm 150 ℃ ~ 180 ℃, lub sijhawm vulcanization ntawm 10 feeb ~ 15 feeb, lub siab vulcanization ntawm 5MPa ~ 10MPa, thiab kev ua kom zoo tshaj plaws pwm tsim, molding kub thiab lub sijhawm, tuaj yeem txo qhov tsim ntawm formaldehyde. Cov ntaub ntawv qhia tau tias los ntawm cov kev ntsuas kev ua kom zoo tshaj plaws no, cov ntsiab lus formaldehyde ntawm cov khoom tuaj yeem txo qis los ntawm 20% ~ 35%.
Kev tswj hwm ib puag ncig thiab cov khoom siv tsis tuaj yeem tsis quav ntsej: kev ua pa zoo hauv chaw ua haujlwm thiab kev ntxuav thiab kev saib xyuas cov khoom siv ntau lawm tuaj yeem txo qhov kev sib sau ua ke thiab kev nqus ntawm formaldehyde thaum lub sijhawm tsim khoom. Lub tshuab cua muaj qhov zaus ua pa ntau dua 12 zaug / teev, uas tuaj yeem txo qhov concentration ntawm formaldehyde hauv chaw ua haujlwm kom qis dua 0.05mg / m³; kev ntxuav thiab kev saib xyuas cov khoom siv tuaj yeem txo cov ntsiab lus formaldehyde ntawm cov khoom los ntawm kwv yees li 10%.
Kev tshuaj xyuas thiab kev saib xyuas zoo yog qhov lav: Kev tsim cov qauv kuaj formaldehyde nruj thiab cov txheej txheem kuaj tsis tu ncua tuaj yeem ua kom ntseeg tau tias cov ntsiab lus formaldehyde ntawm cov khoom txuas ntxiv ua tau raws li cov qauv kev nyab xeeb. Cov thev naus laus zis kuaj pom siab heev xws li kev ua haujlwm siab kua chromatography (HPLC) lossis roj chromatography (GC) tuaj yeem ntsuas cov ntsiab lus formaldehyde kom raug; kev kuaj tsis tu ncua thiab kev ntsuas kev kho mob nruj tuaj yeem ua kom ntseeg tau tias qhov ruaj khov ntawm cov khoom zoo.
Kev cob qhia thiab kev tswj hwm cov neeg ua haujlwm yog qhov tseem ceeb: kev cob qhia cov neeg ua haujlwm txog kev phom sij thiab kev tiv thaiv formaldehyde, nrog rau kev cob qhia thiab kev ntsuam xyuas cov txheej txheem ua haujlwm, tsis yog tsuas yog txo cov ntsiab lus formaldehyde xwb, tab sis kuj ua kom muaj kev noj qab haus huv thiab kev nyab xeeb ntawm cov neeg ua haujlwm. Tom qab siv cov txheej txheem ua haujlwm, cov ntsiab lus formaldehyde ntawm cov khoom tuaj yeem txo qis 15% thiab kev ua haujlwm ntau ntxiv tuaj yeem nce 10%.
7.2 Cov Lus Qhia
Txhim kho qhov zoo ntawm cov khoom siv raw: Cov lag luam yuav tsum ua haujlwm nrog cov neeg muag khoom kom sib koom ua ke tsim cov khoom siv raw silicone uas tsis muaj formaldehyde lossis txawm tias tsis muaj formaldehyde kom tshem tawm cov formaldehyde los ntawm qhov chaw. Tib lub sijhawm, txhawb kev ntsuam xyuas thiab kev tshuaj xyuas ntawm cov neeg muag khoom raw kom ntseeg tau tias cov khoom siv raw uas yuav los yeej ua tau raws li kev tiv thaiv ib puag ncig thiab kev nyab xeeb.
Ua kom cov txheej txheem tsim khoom zoo dua: Cov lag luam yuav tsum tshawb nrhiav thiab siv cov txheej txheem tsim khoom ntau dua kom zoo dua qub rau cov txheej txheem vulcanization thiab molding. Piv txwv li, qhia cov khoom siv tsim khoom ntse thiab cov txheej txheem tswj hwm kom ua tiav kev saib xyuas kom raug thiab kev hloov kho tsis siv neeg ntawm cov txheej txheem tsim khoom, yog li ntawd txo cov formaldehyde tsim tawm zoo dua.
Txhim kho kev tswj hwm ib puag ncig thiab cov khoom siv: Cov lag luam yuav tsum tsis tu ncua hloov kho thiab kho dua tshiab cov tshuab cua hauv chaw ua haujlwm thiab cov khoom siv tsim khoom kom ntseeg tau tias kev ua haujlwm ntawm qhov cua thiab kev ntxuav thiab kev saib xyuas cov khoom siv zoo tshaj plaws. Tib lub sijhawm, tsim kom muaj kev hloov kho tshiab thiab txhim kho cov khoom siv tiav, tshem tawm cov khoom siv qub uas muaj kev pheej hmoo ntawm kev tso tawm formaldehyde siab, thiab qhia cov khoom siv tsim khoom tshiab uas muaj kev tso tawm formaldehyde tsawg.
Txhawb kev tshuaj xyuas thiab kev saib xyuas zoo: Cov lag luam yuav tsum txhim kho cov qauv kuaj formaldehyde thiab cov txheej txheem kuaj, nce zaus kuaj thiab qhov loj ntawm cov qauv, thiab xyuas kom meej tias cov ntsiab lus formaldehyde ntawm cov khoom raug tswj hwm nruj me ntsis hauv qhov chaw nyab xeeb. Tib lub sijhawm, txhawb kev tshuaj xyuas thiab kev siv cov ntaub ntawv kuaj, tshawb pom cov teeb meem zoo raws sijhawm, thiab ua cov kev tiv thaiv thiab kho kom zoo.
Ua tib zoo mloog rau kev cob qhia thiab kev tswj hwm cov neeg ua haujlwm: Cov lag luam yuav tsum suav nrog kev cob qhia cov neeg ua haujlwm rau hauv cov phiaj xwm kev txhim kho mus sij hawm ntev, tsis tu ncua npaj cov kev cob qhia txog kev phom sij thiab kev tiv thaiv formaldehyde thiab kev cob qhia cov txheej txheem ua haujlwm, thiab txhim kho cov neeg ua haujlwm kev paub txog ib puag ncig thiab kev txawj ua haujlwm. Tib lub sijhawm, tsim kom muaj kev saib xyuas thiab kev tawm tswv yim tag nrho los txhawb cov neeg ua haujlwm kom koom nrog kev txhim kho zoo thiab tsim kom muaj huab cua zoo ntawm kev koom tes tag nrho thiab kev tswj hwm ua ke.
Hauv kev xaus lus, los ntawm kev ntsuas dav dav xws li kev tswj cov khoom siv raw, kev ua kom zoo dua qub, kev tswj hwm ib puag ncig thiab cov khoom siv, kev tshuaj xyuas zoo thiab kev saib xyuas, kev cob qhia cov neeg ua haujlwm thiab kev tswj hwm, cov ntsiab lus formaldehyde hauv cov txheej txheem tsim khoom ntawm silicone lub duav tuaj yeem txo qis, qhov zoo thiab kev nyab xeeb ntawm cov khoom tuaj yeem lav, kev noj qab haus huv ntawm cov neeg siv khoom tuaj yeem tiv thaiv, thiab nws tseem yuav pab txhawb rau kev txhim kho kev lag luam.