Cov qauv formaldehyde rau cov ntaub qhwv silicone yog dab tsi?

1. Txheej txheem cej luam ntawm cov qauv formaldehyde rau cov ntaub qhwv silicone duav

1.1 Kev tshuaj xyuas qhov tseem ceeb ntawm cov qauv hauv tebchaws
Tam sim no, kuv lub teb chaws muaj cov qauv hauv tebchaws meej rau cov ntsiab lus formaldehyde ntawmcov khoom siv siliconeRaws li cov qauv tseem ceeb xws li "GB/T 2912.1-2009 Textiles Determination of formaldehyde Part 1: Free and hydrolyzed formaldehyde (water extraction method)", cov ntsiab lus formaldehyde hauv cov khoom silicone yuav tsum tau tswj hwm nruj me ntsis hauv qhov chaw nyab xeeb. Rau cov khoom xws li silicone hip pads uas nyob ze rau tib neeg lub cev, cov ntsiab lus formaldehyde yuav tsum tsis pub tshaj 30mg/kg. Cov qauv no yog teeb tsa raws li kev tiv thaiv tib neeg kev noj qab haus huv thiab cov kev cai nruj rau cov khoom zoo.
Hais txog kev siv tau ntawm tus qauv, tus qauv no siv rau txhua yam khoom silicone, suav nrog cov ntaub qhwv caj dab silicone. Nws lub hom phiaj yog xyuas kom meej tias cov khoom yuav tsis ua rau tib neeg muaj kev noj qab haus huv thaum siv ib txwm. Formaldehyde yog ib yam khoom tsis zoo. Kev raug rau lub sijhawm ntev rau cov tshuaj formaldehyde tsawg yuav ua rau muaj cov tsos mob xws li kab mob ua pa thiab ua xua rau daim tawv nqaij, thiab txawm tias muaj kev pheej hmoo ntawm mob qog noj ntshav. Yog li ntawd, kev tswj hwm nruj ntawm cov ntsiab lus formaldehyde hauv cov ntaub qhwv caj dab silicone yog qhov tseem ceeb rau kev tiv thaiv kev noj qab haus huv ntawm cov neeg siv khoom.
Hauv kev sim tiag tiag, cov chaw haujlwm cuam tshuam yuav ua qhov kev tshuaj xyuas tsis tu ncua ntawm cov ntaub qhwv caj dab silicone hauv khw kom ntseeg tau tias lawv cov ntsiab lus formaldehyde ua tau raws li cov qauv hauv tebchaws. Thaum pom cov khoom lag luam uas muaj cov ntsiab lus formaldehyde ntau dhau, cov kev rau txim sib xws yuav raug coj los siv, suav nrog kev rov qab los ntawm cov khoom lag luam thiab kev nplua, kom tswj tau kev txiav txim siab ntawm kev ua lag luam thiab cov cai ntawm cov neeg siv khoom. Qhov no qhia tau hais tias cov qauv hauv tebchaws ua lub luag haujlwm tseem ceeb hauv kev coj thiab kev txwv tsis pub tswj cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone.

2. Kev sib raug zoo ntawm cov khoom siv silicone thiab formaldehyde

2.1 Cov nyhuv ntawm cov txheej txheem tsim silicone rau formaldehyde

Cov txheej txheem tsim cov silicone feem ntau suav nrog kev xaiv cov khoom siv raw, cov txheej txheem molding thiab kev ua tiav tom qab, txhua yam uas yuav cuam tshuam rau cov ntsiab lus formaldehyde hauv cov ntaub qhwv silicone.

Kev xaiv cov khoom siv raw: Cov khoom tseem ceeb ntawm silicone yog silicon dioxide, uas yog cov khoom tsis muaj tshuaj lom thiab tsis muaj ntxhiab. Txawm li cas los xij, thaum lub sijhawm tsim khoom, qee cov khoom ntxiv xws li cov neeg sawv cev sib txuas thiab cov catalysts yuav raug ntxiv. Yog tias cov khoom ntxiv no tsis zoo lossis siv tsis raug, formaldehyde yuav raug tso tawm. Piv txwv li, qee cov neeg sawv cev sib txuas tsis zoo yuav lwj thiab tsim formaldehyde thaum lub sijhawm kho kub siab. Raws li kev tshawb fawb cuam tshuam, kev siv cov khoom siv raw tsim nyog tuaj yeem txo qhov tso tawm ntawm formaldehyde ntau dua 80%. Yog li ntawd, kev xaiv cov khoom siv raw zoo thiab zoo rau ib puag ncig yog ib qho ntawm cov yam tseem ceeb hauv kev tswj cov ntsiab lus formaldehyde ntawm silicone lub duav.
Cov txheej txheem molding: Muaj ob txoj kev molding tseem ceeb rau cov silicone duav pads: txhaj tshuaj molding thiab compression molding. Thaum lub sijhawm txhaj tshuaj molding, yog tias qhov kub tsis raug tswj kom zoo, qee cov khoom hauv cov khoom siv raw yuav lwj, yog li tso tawm formaldehyde. Feem ntau hais lus, qhov kub ntawm kev txhaj tshuaj molding yog ntawm 180 ℃ -220 ℃. Yog tias qhov kub siab dhau, kev tso tawm ntawm formaldehyde yuav nce ntxiv ntau. Thaum lub sijhawm compression molding, kev tswj hwm ntawm lub siab thiab lub sijhawm kuj tseem yuav cuam tshuam rau kev tso tawm ntawm formaldehyde. Piv txwv li, thaum lub sijhawm compression molding, yog tias lub siab tsis txaus lossis lub sijhawm luv dhau, cov khoom ntxiv hauv cov khoom siv raw yuav tsis teb tag nrho, ua rau muaj ntau formaldehyde seem. Cov ntaub ntawv sim qhia tau tias nyob rau hauv cov txheej txheem molding tsim nyog, cov ntsiab lus formaldehyde ntawm silicone duav pads tuaj yeem tswj tau qis dua 10mg / kg, uas qis dua tus qauv hauv tebchaws.
Kev Ua Tom Qab: Kev ua tom qab feem ntau suav nrog cov kauj ruam xws li kev ntxuav, ziab thiab tom qab kho. Thaum lub sijhawm ntxuav, yog tias kev ntxuav tsis ua tiav, qee cov khoom ntxiv uas muaj formaldehyde yuav tseem nyob. Thaum lub sijhawm ziab thiab tom qab kho, yog tias qhov kub thiab sijhawm tsis raug tswj kom zoo, formaldehyde kuj tseem yuav raug tso tawm. Piv txwv li, thaum lub sijhawm tom qab kho, yog tias qhov kub qis dhau lossis lub sijhawm luv dhau, qee cov khoom hauv cov khoom siv raw yuav tsis kho tag nrho, yog li tso tawm formaldehyde thaum siv tom qab. Los ntawm kev ua kom zoo dua cov txheej txheem tom qab kho, cov ntsiab lus formaldehyde hauv lub duav silicone tuaj yeem txo qis ntxiv. Raws li kev sim tiag tiag, cov ntsiab lus formaldehyde ntawm lub duav silicone uas tau kho tom qab kho tuaj yeem txo qis txog li 5mg / kg, uas qhia tau hais tias kev kho tom qab ua lub luag haujlwm tseem ceeb hauv kev tswj cov ntsiab lus formaldehyde.

3. Siv cov xwm txheej ntawm cov ntaub qhwv caj dab silicone thiab formaldehyde kev nyab xeeb thresholds

3.1 Kev xav txog kev nyab xeeb ntawm formaldehyde hauv cov chaw siv hauv tsev
Hauv tsev ib puag ncig, cov xwm txheej siv ntawm cov ntaub qhwv caj dab silicone yog qhov tshwj xeeb, thiab lawv feem ntau nyob ze rau cov pab pawg rhiab heev xws li cov menyuam mos lossis cov neeg laus. Yog li ntawd, kev txiav txim siab txog kev nyab xeeb ntawm formaldehyde yuav tsum nruj dua.
Kev Pheej Hmoo ntawm Kev Raug Rau Cov Menyuam Mos thiab Cov Menyuam Yaus: Cov menyuam mos thiab cov menyuam yaus muaj daim tawv nqaij mos, lawv lub cev tiv thaiv kab mob tsis tau tsim tag nrho, thiab lawv txoj kev kam rau formaldehyde qis dua li cov neeg laus. Raws li kev tshawb fawb cuam tshuam, kev raug rau cov tshuaj formaldehyde tsawg hauv cov menyuam mos thiab cov menyuam yaus yuav ua rau tawv nqaij khaus, ua pa nyuaj thiab lwm yam teeb meem. Lub Koom Haum Kev Noj Qab Haus Huv Ntiaj Teb (WHO) pom zoo tias qhov concentration formaldehyde hauv ib puag ncig ntawm cov menyuam mos thiab cov menyuam yaus yuav tsum tswj qis dua 0.05mg / m³. Thaum siv cov ntaub qhwv silicone, yog tias cov ntsiab lus formaldehyde tshaj qhov tus qauv, qhov concentration ntawm formaldehyde ntau yuav tsim nyob rau hauv ib puag ncig hauv zos, yog li ua rau muaj kev pheej hmoo ntawm kev noj qab haus huv ntawm cov menyuam mos thiab cov menyuam yaus.
Siv ntau zaus thiab lub sijhawm raug: Hauv ib puag ncig hauv tsev, cov ntaub qhwv caj dab silicone feem ntau siv ntau zaus thiab ntev. Piv txwv li, cov menyuam mos thiab cov menyuam yaus tuaj yeem siv cov ntaub qhwv caj dab silicone rau ob peb teev lossis ntev dua txhua hnub. Qhov kev sib cuag ntev no ua rau muaj kev sib kis rau formaldehyde ntau ntxiv. Raws li kev tshawb fawb txog ib puag ncig, txawm tias qhov kev sib xyaw ua ke ntawm formaldehyde nyob hauv lub tebchaws tus qauv, kev raug mob ntev yuav muaj kev cuam tshuam rau kev noj qab haus huv. Yog li ntawd, hauv cov xwm txheej siv hauv tsev, cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone yuav tsum tau txo qis ntxiv kom txo qhov kev pheej hmoo ntawm kev raug mob ntev.
Kev cuam tshuam ntawm cov huab cua hauv tsev: Cov huab cua hauv tsev ua lub luag haujlwm tseem ceeb hauv kev sib kis thiab kev txo qis ntawm formaldehyde. Yog tias muaj huab cua zoo, formaldehyde tuaj yeem kis mus rau sab nraud sai dua, txo qhov concentration ntawm formaldehyde hauv tsev. Txawm li cas los xij, hauv qee chav tsis muaj cua, xws li thaum lub qhov rooj thiab qhov rai kaw thaum lub caij ntuj no kom sov, formaldehyde yuav sib sau ua ke hauv tsev, yog li ua rau muaj kev pheej hmoo ntawm kev raug formaldehyde ntawm cov neeg siv silicone hip pad. Cov kev tshawb fawb tau qhia tias hauv cov chav tsis muaj cua, cov concentration ntawm formaldehyde yuav siab dua 2-3 npaug dua li hauv cov chav uas muaj cua zoo. Yog li ntawd, thaum siv silicone hip pads hauv tsev, nws yog qhov tsim nyog los xav txog qhov cuam tshuam ntawm cov huab cua ntawm qhov kev nyab xeeb formaldehyde. Nws raug pom zoo kom tswj qhov cua zoo thaum siv kom txo qhov concentration ntawm formaldehyde.
Cov ntaub ntawv xeem tiag tiag: Raws li cov ntaub ntawv xeem tiag tiag ntawm qee cov ntaub qhwv caj dab silicone hauv khw, nws pom tias qee cov khoom muaj cov pa phem formaldehyde ntau dhau thaum siv hauv tsev. Piv txwv li, ib hom ntaub qhwv caj dab silicone tau tso tawm 40 mg / kg ntawm formaldehyde thaum pib siv, uas yog siab dua 30 mg / kg teev tseg hauv tus qauv hauv tebchaws. Qhov no qhia tau hais tias hauv cov xwm txheej siv hauv tsev, nws yog qhov tsim nyog los txhawb kev tshawb pom thiab kev saib xyuas ntawm cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone kom ntseeg tau tias cov khoom ua tau raws li cov qauv kev nyab xeeb siab dua.

4. Txoj kev kuaj pom formaldehyde thiab kev siv tus qauv ntawm cov ntaub qhwv silicone duav

4.1 Kev Taw Qhia Txog Cov Txheej Txheem Txheem Tshawb Nrhiav formaldehyde
Tam sim no, kev kuaj pom cov ntsiab lus formaldehyde hauv cov ntaub qhwv caj dab silicone feem ntau yog raws li cov qauv tseem ceeb xws li "GB / T 2912.1-2009 Textiles Determination of Formaldehyde Part 1: Free thiab Hydrolyzed Formaldehyde (Dej Extraction Method)". Cov qauv no muab cov txheej txheem thiab cov kauj ruam meej rau kev kuaj pom kom ntseeg tau tias qhov tseeb thiab kev ntseeg tau ntawm cov txiaj ntsig xeem.
Txoj kev rho tawm dej: Qhov no yog ib txoj kev siv ntau rau kev ntes cov ntsiab lus formaldehyde ntawm cov khoom silicone. Lub hauv paus ntsiab lus yog tso formaldehyde tawm ntawm cov qauv los ntawm kev ntub cov qauv silicone hauv dej, thiab tom qab ntawd txiav txim siab qhov concentration ntawm formaldehyde hauv dej los ntawm kev tshuaj ntsuam xyuas tshuaj lom neeg. Cov kauj ruam ua haujlwm tshwj xeeb suav nrog kev ntsuas qhov ntau ntawm cov qauv silicone, txiav nws ua tej daim thiab muab tso rau hauv lub cuab yeej rho tawm, ntxiv cov dej distilled kom tsim nyog, thiab rho tawm nws nyob rau hauv qee qhov kub thiab sijhawm. Tom qab kev rho tawm tiav, cov ntsiab lus formaldehyde hauv cov extract yog txiav txim siab los ntawm spectrophotometry lossis roj chromatography. Qhov zoo ntawm txoj kev no yog tias kev ua haujlwm yooj yim heev thiab nws yog qhov tsim nyog rau kev ntes formaldehyde ntawm feem ntau cov khoom silicone. Raws li kev tshawb fawb cuam tshuam, qhov tseeb ntawm kev ntes ntawm txoj kev rho tawm dej tuaj yeem ncav cuag 0.1mg / kg, uas tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev ntes cov ntsiab lus formaldehyde ntawm cov ntaub qhwv silicone.
Gas chromatography: Qhov no yog ib txoj kev kuaj formaldehyde kom raug dua, uas yog qhov tsim nyog rau cov xwm txheej kuaj pom nrog cov ntsiab lus formaldehyde siab. Lub hauv paus ntsiab lus yog siv cov roj chromatograph los cais cov formaldehyde hauv cov qauv, thiab tom qab ntawd txiav txim siab cov ntsiab lus formaldehyde los ntawm lub tshuab ntes. Thaum kuaj pom cov ntaub qhwv silicone, cov qauv yuav tsum tau ua ntej kom zoo kom tso tawm formaldehyde, thiab tom qab ntawd cov qauv roj raug txhaj rau hauv cov roj chromatograph rau kev tshuaj xyuas. Qhov zoo ntawm cov roj chromatography yog tias nws muaj kev rhiab heev ntawm kev kuaj pom thiab tuaj yeem kuaj pom cov ntsiab lus tsawg ntawm formaldehyde, thiab nws qhov kev txwv kev kuaj pom tuaj yeem ncav cuag 0.01mg / kg. Qhov no ua rau txoj kev no tuaj yeem kuaj pom cov ntsiab lus formaldehyde hauv cov ntaub qhwv silicone kom raug dua, tshwj xeeb tshaj yog rau cov khoom uas ze rau lub teb chaws tus qauv txwv, thiab tuaj yeem muab cov txiaj ntsig kev xeem txhim khu kev qha dua.
Kev siv roj chromatography siab: Txoj kev no kuj tau siv dav hauv kev tshawb nrhiav formaldehyde. Lub hauv paus ntsiab lus yog siv cov roj chromatography siab los cais cov formaldehyde hauv cov qauv thiab ua qhov kev tshuaj xyuas kom muaj nuj nqis. Piv nrog roj chromatography, kev siv roj chromatography siab tsis xav tau cov qauv hloov mus ua roj, yog li cov kev xav tau ua ntej rau cov qauv qis dua. Thaum kuaj cov ntaub qhwv silicone, cov qauv raug yaj rau hauv cov kuab tshuaj tsim nyog thiab tom qab ntawd tshuaj xyuas los ntawm kev siv roj chromatography siab. Kev siv roj chromatography siab muaj qhov tseeb ntawm kev tshawb nrhiav thiab tuaj yeem txiav txim siab cov ntsiab lus formaldehyde hauv cov ntaub qhwv silicone. Kev rov ua dua thiab kev rov ua dua ntawm nws cov txiaj ntsig xeem yog qhov zoo. Raws li cov ntaub ntawv siv tiag tiag, qhov yuam kev ntawm txoj kev no feem ntau yog nyob hauv 5%, uas tuaj yeem muab kev txhawb nqa kev txawj ntse rau kev tshawb nrhiav cov ntsiab lus formaldehyde hauv cov ntaub qhwv silicone.
Cov txheej txheem kuaj pom formaldehyde no muaj lawv tus kheej qhov zoo thiab qhov tsis zoo, tab sis hauv kev siv tiag tiag, txoj kev tsim nyog feem ntau raug xaiv raws li lub hom phiaj ntawm kev xeem thiab cov yam ntxwv ntawm cov qauv. Rau cov khoom xws li silicone lub duav pads uas nyob ze rau tib neeg lub cev, kev kuaj formaldehyde nruj yog ib feem tseem ceeb ntawm kev ua kom ntseeg tau tias lawv ua tau raws li cov qauv hauv tebchaws thiab tiv thaiv kev noj qab haus huv ntawm cov neeg siv khoom.

5. Kev saib xyuas kev ua lag luam thiab cov ntsiab lus formaldehyde ntawm cov ntaub qhwv silicone

5.1 Cov kev cai tswjfwm ntawm cov tub ceev xwm tswj hwm txog cov ntsiab lus formaldehyde
Cov tub ceev xwm tswj hwm kev ua lag luam tau siv ntau yam kev ntsuas nruj los tswj cov ntsiab lus formaldehyde ntawm cov ntaub qhwv silicone kom ntseeg tau tias muaj kev nyab xeeb ntawm cov khoom.

Cov txheej txheem kuaj cov khoom: Cov tub ceev xwm tswj hwm kev ua lag luam yuav ua cov qauv kuaj ntawm cov khoom siv silicone hip pad hauv kev ua lag luam tas li. Raws li cov ntaub ntawv txheeb cais, tus lej ntawm cov khoom kuaj txhua xyoo suav txog li 10% ntawm tag nrho cov khoom muag hauv kev ua lag luam. Cov qauv kuaj no suav nrog cov khoom ntawm ntau hom thiab cov pawg kom ntseeg tau tias muaj kev saib xyuas tag nrho. Cov txiaj ntsig kuaj qhia tau hais tias qhov feem pua ​​ntawm cov khoom uas muaj cov ntsiab lus formaldehyde ntau dhau tau txo qis txhua xyoo hauv xyoo tas los no, los ntawm 15% tsib xyoos dhau los mus rau 5% tam sim no, uas qhia tau hais tias cov kev ntsuas kev cai lij choj tau ua tiav cov txiaj ntsig zoo kawg.
Lub kaw lus pov thawj zoo: kuv lub teb chaws tau tsim kom muaj lub kaw lus pov thawj zoo tiav, xav kom cov chaw tsim khoom siv silicone hip pad dhau daim ntawv pov thawj zoo ua ntej nkag mus rau hauv kev ua lag luam. Piv txwv li, cov tuam txhab yuav tsum tau txais daim ntawv pov thawj ISO 9001 kev tswj hwm zoo thiab daim ntawv pov thawj ISO 14001 ib puag ncig kev tswj hwm. Cov kab ke pov thawj no tsis yog tsuas yog muaj cov kev cai nruj ntawm cov ntsiab lus formaldehyde, tab sis kuj npog ntau qhov txuas xws li cov txheej txheem tsim khoom, kev yuav khoom siv raw, kev tswj hwm zoo, thiab lwm yam. Tam sim no, ntau dua 80% ntawm cov chaw tsim khoom siv silicone hip pad hauv kev ua lag luam tau dhau daim ntawv pov thawj zoo, uas muab kev lees paub zoo rau cov khoom zoo.
Kev nplua thiab kev rov qab los: Rau cov khoom uas muaj cov ntsiab lus formaldehyde ntau dhau, cov chaw saib xyuas kev ua lag luam yuav siv cov kev rau txim hnyav. Thaum pom tias cov ntsiab lus formaldehyde ntawm cov khoom tshaj qhov tus qauv, lub tuam txhab yuav ntsib kev nplua siab, thiab tus nqi nplua tuaj yeem txog li 10 npaug ntawm tus nqi ntawm cov khoom. Tsis tas li ntawd, cov khoom uas tshaj qhov tus qauv yuav raug rov qab los yuam, thiab lub tuam txhab yuav tsum tau dais tag nrho cov nqi hauv cov txheej txheem rov qab los. Raws li cov ntaub ntawv, hauv peb xyoos dhau los, tus lej ntawm cov khoom siv silicone hip pad rov qab los vim muaj cov ntsiab lus formaldehyde ntau dhau suav txog ntau dua 90% ntawm cov khoom tsis tsim nyog kuaj. Qhov kev rau txim nruj thiab kev rov qab los no tau ua rau cov tuam txhab tsis zoo thiab ua rau lawv tswj hwm cov khoom zoo.
Kev daws teeb meem kev tsis txaus siab ntawm cov neeg siv khoom: Lub chaw saib xyuas kev ua lag luam kuj tau tsim kom muaj lub tshuab daws teeb meem kev tsis txaus siab ntawm cov neeg siv khoom los txhawb kom cov neeg siv khoom yws txog cov khoom uas muaj cov formaldehyde ntau dhau. Cov neeg siv khoom tuaj yeem xa cov lus tsis txaus siab los ntawm ntau txoj hauv kev, xws li 12315 hotline thiab online platforms. Lub chaw saib xyuas kev ua lag luam yuav muab qhov tseem ceeb rau cov khoom uas cov neeg siv khoom yws thiab ua kev tshawb nrhiav thiab kev sim raws sijhawm. Raws li cov ntaub ntawv, ntawm cov khoom uas cov neeg siv khoom yws, qhov feem pua ​​ntawm cov formaldehyde ntau tshaj tus qauv yog siab txog 70%, uas qhia tau tias cov lus tsis txaus siab ntawm cov neeg siv khoom ua lub luag haujlwm tseem ceeb hauv kev saib xyuas kev ua lag luam thiab pab tshawb pom thiab daws cov khoom muaj teeb meem raws sijhawm.

6. Kev paub txog cov neeg siv khoom thiab cov qauv formaldehyde rau cov ntaub qhwv caj dab silicone

6.1 Cov neeg siv khoom txhawj xeeb txog cov ntsiab lus formaldehyde
Cov neeg siv khoom txhawj xeeb txog cov ntsiab lus formaldehyde hauv cov khoom noj khoom haussilicone duav padsfeem ntau yog tsom mus rau cov hauv qab no:
Kev Paub Txog Kev Pheej Hmoo Kev Noj Qab Haus Huv: Cov neeg siv khoom feem ntau lees paub tias formaldehyde yog ib yam khoom tsis zoo, thiab kev raug mob mus sij hawm ntev yuav ua rau muaj kab mob ua pa, ua xua rau daim tawv nqaij, thiab txawm tias mob qog noj ntshav. Rau cov khoom xws li cov ntaub qhwv caj dab silicone uas nyob ze rau tib neeg lub cev, cov neeg siv khoom txhawj xeeb tshwj xeeb txog seb lawv cov ntsiab lus formaldehyde puas tshaj qhov tus qauv. Raws li kev tshawb fawb cuam tshuam, ntau dua 90% ntawm cov neeg siv khoom yuav nug txog cov ntsiab lus formaldehyde thaum yuav cov ntaub qhwv caj dab silicone, uas qhia tau tias cov neeg siv khoom muaj kev paub ntau txog kev phom sij ntawm formaldehyde thiab muaj kev nkag siab zoo txog kev tiv thaiv lawv tus kheej txoj kev noj qab haus huv.
Kev cia siab rau kev nyab xeeb ntawm cov khoom: Cov neeg siv khoom xav tias cov ntaub qhwv caj dab silicone yuav ua raws li cov qauv hauv tebchaws thiab cov ntsiab lus formaldehyde raug tswj hwm hauv qhov chaw nyab xeeb. Hauv cov xwm txheej siv hauv tsev, tshwj xeeb tshaj yog rau cov tsev neeg uas muaj menyuam mos lossis cov neeg laus, cov neeg siv khoom muaj cov kev cai nruj dua rau kev nyab xeeb ntawm cov khoom. Lawv vam tias cov ntaub qhwv caj dab silicone yuav tsis tso tawm formaldehyde thaum siv ib txwm, lossis tias cov formaldehyde tso tawm qis dua 30mg / kg teev tseg hauv tus qauv hauv tebchaws. Raws li cov ntaub ntawv tshawb fawb kev lag luam, kwv yees li 85% ntawm cov neeg siv khoom txaus siab them tus nqi siab dua rau cov ntaub qhwv caj dab silicone uas ua tau raws li cov qauv ntsiab lus formaldehyde siab dua, uas qhia txog cov neeg siv khoom qhov kev saib xyuas siab rau kev nyab xeeb ntawm cov khoom.
Kev ntseeg siab rau hom lag luam thiab kev qhia meej txog cov ntaub ntawv: Thaum yuav cov ntaub qhwv caj dab silicone, cov neeg siv khoom feem ntau xaiv cov npe nrov, ntseeg tias lawv cov khoom zoo thiab kev nyab xeeb tau lees paub ntau dua. Tib lub sijhawm, cov neeg siv khoom kuj xav kom cov npe lag luam muab cov ntaub ntawv khoom pob tshab, suav nrog cov ntawv qhia txog kev xeem formaldehyde thiab cov ntawv pov thawj cuam tshuam. Daim ntawv ntsuam xyuas pom tias kev paub txog hom lag luam thiab kev qhia meej txog cov ntaub ntawv muaj feem cuam tshuam loj rau cov neeg siv khoom txiav txim siab yuav khoom. Cov khoom lag luam uas muaj cov ntawv cim qhia meej txog cov ntsiab lus formaldehyde thiab cov ntawv qhia txog kev xeem muaj cai muaj tus nqi lees txais kev ua lag luam uas siab dua li 30% dua li cov khoom uas tsis muab cov ntaub ntawv cuam tshuam. Qhov no qhia tau hais tias cov neeg siv khoom muaj kev thov ntau ntxiv rau kev ntseeg siab rau hom lag luam thiab kev qhia meej txog cov ntaub ntawv, thiab cov npe lag luam yuav tsum txhawb lawv tus kheej txoj kev tsim kho kom tau raws li cov neeg siv khoom xav tau.

7. Cov Lus Qhia Luv Luv
Los ntawm kev tshawb fawb txog cov qauv formaldehyde rau cov ntaub qhwv silicone, peb tuaj yeem kos cov lus xaus hauv qab no:
7.1 Qhov tseem ceeb ntawm cov qauv ntsiab lus formaldehyde
Formaldehyde yog ib yam tshuaj lom neeg uas ua rau tib neeg lub cev puas tsuaj. Kev raug rau cov tshuaj formaldehyde tsawg tsawg mus sij hawm ntev yuav ua rau muaj ntau yam teeb meem kev noj qab haus huv, xws li kab mob ua pa, ua xua rau daim tawv nqaij, thiab txawm tias muaj kev pheej hmoo ntawm mob qog noj ntshav. Rau cov khoom xws li cov ntaub qhwv caj dab silicone uas nyob ze rau tib neeg lub cev, nws yog ib qho tseem ceeb kom tswj hwm cov ntsiab lus formaldehyde. Kuv lub teb chaws tus qauv hauv tebchaws "GB / T 2912.1-2009 Kev Txiav Txim Siab Txog Formaldehyde Ntu 1: Dawb thiab Hydrolyzed Formaldehyde (Txoj Kev Rho Tawm Dej)" qhia meej meej tias cov ntsiab lus formaldehyde hauv cov khoom silicone yuav tsum tsis pub tshaj 30mg / kg. Tus qauv no muab lub hauv paus tseem ceeb rau kev tiv thaiv kev noj qab haus huv ntawm cov neeg siv khoom.
7.2 Yam Uas Cuam Tshuam Rau Cov Formaldehyde
Cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone raug cuam tshuam los ntawm ntau yam ntawm cov txheej txheem tsim khoom. Hauv kev xaiv cov khoom siv raw, kev siv cov khoom siv raw zoo thiab zoo rau ib puag ncig yog qhov tseem ceeb rau kev txo cov formaldehyde tso tawm. Cov khoom siv raw tsim nyog tuaj yeem txo cov formaldehyde tso tawm ntau dua 80%. Hauv cov txheej txheem molding, kev tswj hwm qhov kub thiab txias, siab thiab lub sijhawm rau kev txhaj tshuaj molding thiab compression molding tsis raug yuav ua rau muaj kev tso tawm formaldehyde ntau ntxiv. Hauv cov kev sib txuas tom qab ua tiav, xws li kev ntxuav, ziab thiab tom qab kho, yog tias kev ua haujlwm tsis raug qauv, cov khoom ntxiv uas muaj formaldehyde kuj tseem yuav nyob. Los ntawm kev ua kom zoo dua cov txheej txheem tsim khoom, cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone tuaj yeem tswj tau zoo kom qis dua tus qauv hauv tebchaws.
7.3 Cov xwm txheej siv thiab cov kev nyab xeeb
Hauv tsev siv ib puag ncig, cov ntaub qhwv caj dab silicone feem ntau nyob ze rau cov pab pawg rhiab heev xws li cov menyuam mos thiab cov neeg laus, yog li kev xav txog kev nyab xeeb rau formaldehyde yuav tsum nruj dua. Cov menyuam mos thiab cov menyuam yaus muaj daim tawv nqaij mos thiab lawv lub cev tiv thaiv kab mob tsis tau tsim tag nrho. Kev raug rau lub sijhawm ntev rau cov tshuaj formaldehyde tsawg yuav ua rau tawv nqaij ua pob, ua pa kab mob thiab lwm yam teeb meem. Lub Koom Haum Ntiaj Teb Kev Noj Qab Haus Huv (WHO) pom zoo tias qhov concentration formaldehyde hauv ib puag ncig ntawm cov menyuam mos thiab cov menyuam yaus yuav tsum tswj hwm qis dua 0.05mg / m³. Tsis tas li ntawd, kev siv ntau zaus, lub sijhawm ntev thiab cov huab cua tsis zoo hauv tsev yuav ua rau muaj kev sib kis rau formaldehyde ntau ntxiv, yog li ua rau muaj kev pheej hmoo kev noj qab haus huv ntau ntxiv. Yog li ntawd, hauv tsev siv, nws yog qhov tsim nyog los txo cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone thiab tswj cov huab cua zoo.
7.4 Cov txheej txheem nrhiav thiab kev siv tus qauv
Tam sim no, cov txheej txheem tseem ceeb rau kev ntes cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone suav nrog kev rho tawm dej, roj chromatography thiab kev ua haujlwm siab ua kua chromatography. Txoj kev rho tawm dej yooj yim rau kev khiav lag luam thiab tsim nyog rau kev ntes formaldehyde ntawm feem ntau cov khoom silicone, nrog rau qhov tseeb ntawm kev ntes txog li 0.1mg / kg. Gas chromatography muaj kev rhiab heev ntawm kev ntes thiab tuaj yeem ntes cov concentration qis ntawm formaldehyde, nrog rau qhov txwv ntawm kev ntes txog li 0.01 mg / kg. High-performance kua chromatography muaj qhov tseeb ntawm kev ntes siab, rov ua dua zoo thiab rov ua dua, thiab qhov yuam kev ntes feem ntau yog nyob hauv 5%. Cov txheej txheem ntes no muab kev txhawb nqa kev siv tshuab kom ntseeg tau tias cov ntaub qhwv caj dab silicone ua tau raws li cov qauv hauv tebchaws.
7.5 Kev saib xyuas thiab kev tswj hwm kev ua lag luam
Lub chaw saib xyuas kev ua lag luam tswj hwm cov ntsiab lus formaldehyde ntawm cov ntaub qhwv silicone los ntawm ntau yam kev ntsuas xws li kev kuaj khoom, daim ntawv pov thawj zoo, kev rau txim thiab kev rov qab los, thiab kev daws teeb meem ntawm cov neeg siv khoom. Nyob rau xyoo tas los no, qhov sib piv ntawm cov khoom uas muaj cov ntsiab lus formaldehyde ntau dhau tau txo qis txhua xyoo, los ntawm 15% tsib xyoos dhau los mus rau 5% tam sim no, qhia tias cov kev ntsuas kev cai lij choj tau ua tiav cov txiaj ntsig zoo kawg nkaus. Cov neeg siv khoom them sai sai rau cov ntsiab lus formaldehyde. Ntau tshaj 90% ntawm cov neeg siv khoom yuav nug txog cov ntsiab lus formaldehyde thaum yuav khoom, thiab kwv yees li 85% ntawm cov neeg siv khoom txaus siab them tus nqi siab dua rau cov khoom uas ua tau raws li cov qauv siab dua. Kev paub txog hom lag luam thiab kev pom tseeb ntawm cov ntaub ntawv muaj kev cuam tshuam loj rau cov neeg siv khoom txiav txim siab yuav khoom. Cov khoom lag luam uas muaj cov ntawv lo rau cov ntsiab lus formaldehyde meej thiab cov ntawv qhia txog kev xeem muaj kev lees paub ntawm kev ua lag luam siab dua.
Hauv kev xaus, kev tswj hwm cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone tsis yog tsuas yog ib qho tseem ceeb los tiv thaiv kev noj qab haus huv ntawm cov neeg siv khoom, tab sis kuj yog qhov txuas tseem ceeb rau cov tuam txhab lag luam los txhim kho cov khoom zoo thiab txhim kho kev sib tw ua lag luam. Los ntawm kev txhawb nqa kev tswj hwm cov txheej txheem tsim khoom, kev ua kom zoo dua cov txheej txheem sim, txhawb nqa kev saib xyuas kev ua lag luam thiab txhim kho kev paub ntawm cov neeg siv khoom, cov ntsiab lus formaldehyde ntawm cov ntaub qhwv caj dab silicone tuaj yeem txo qis, ua kom muaj kev nyab xeeb ntawm cov khoom thiab tsim kom muaj kev noj qab haus huv thiab kev nyab xeeb dua rau cov neeg siv khoom.