Nrog rau kev txhim kho kev tshawb fawb thiab thev naus laus zis, hom tshiab ntawm cov khoom noj khoom haus sib cuag tau tshwm sim tas li hauv lub neej niaj hnub, thiab silicone yog ib qho ntawm lawv.Piv txwv li, silicone spatulas rau do kib, pwm ua ncuav pastry, sealing rings rau tableware, thiab cov khoom me me xws li pacifiers, straw, thiab txhuam hniav yog txhua yam ua los ntawm silicone.Raws li cov khoom siv adsorption muaj zog heev, cov khoom noj khoom haus sib cuag ua los ntawm silicone muaj cov yam ntxwv ntawm lub teeb yuag, tiv thaiv kev poob, yooj yim los ntxuav, thiab tsis xeb, thiab yog nrov heev ntawm cov neeg siv kev noj qab haus huv.Tab sis ntau tus neeg siv khoom kuj tseem txhawj xeeb tias cov khoom siv silicone uas tau raug kub hnyiab tau ntev, tuaj yeem tiv nrog ntau cov khoom noj oily thiab acidic, thiab tuaj rau hauv kev sib cuag nrog cov zaub mov, yuav plasticizer tsiv teb tsaws thiab nag lossis daus ntawm cov hlau hnyav. thaum lub sij hawm ua noj ua haus?Tus nqi ntawm "precipitate" yog dab tsi?Puas muaj tshuaj lom rau tib neeg lub cev yog tias noj?Puas muaj kev lees paub rau qhov zoo thiab kev nyab xeeb ntawm cov khoom siv silicone?
Yuav kom nkag siab txog cov xwm txheej zoo ntawm silicone shovels thiab silicone pwm muag nyob rau hauv Qingdao kev ua lag luam thiab muab cov neeg siv khoom nrog cov ntaub ntawv tseeb thiab txhim khu kev qha, Qingdao Municipal Consumer Protection Commission tau tshaj tawm cov kev sib piv ntawm qee qhov silicone shovels thiab silicone pwm khoom thaum kawg. 2021. Thaum sawv ntxov ntawm Lub Peb Hlis 9th ntawm 10 teev sawv ntxov, qhov kev tshawb fawb loj tshaj plaws "Consumer Laboratory" koom ua ke tsim los ntawm Qingdao Municipal Consumer Protection Commission, Qingdao Municipal Quality Inspection Institute, thiab Peninsula Urban Daily launched "3.15 Tshwj xeeb Tsab ntawv ", uas tau nkag mus rau hauv lub cev thiab tshuaj lom neeg kuaj thiab ncaj qha tawm tsam qhov chaw sim mus rau "nrhiav" kev tsiv teb tsaws ntawm silicone kitchenware thaum ua noj kub.
Tag nrho cov qauv rau qhov kev sim sib piv no yog 20 batch, tag nrho cov uas tau yuav los ntawm cov neeg ua haujlwm ntawm Qingdao Consumer Protection Commission raws li cov neeg siv khoom zoo tib yam hauv ntau lub khw loj, khw muag khoom, nrog rau cov khw muag khoom e-commerce xws li JD. thiab Tmall hauv Qingdao.Ntawm lawv, 10 pob ntawm silicone shovels los ntawm cov khw muag khoom offline;10 pawg ntawm silicone pwm, 7 pawg los ntawm cov khw muag khoom offline, thiab 3 pawg los ntawm cov khw hauv online.
Kev sim ntsuas tau ua nyob rau ntawm Qingdao Product Quality Inspection and Research Institute, thiab cov khoom siv kuaj suav nrog kev siv poov tshuaj permanganate, tag nrho kev tsiv teb tsaws, cov hlau hnyav (hauv Pb), plasticizer migration (DEHP, DAP, DINP, DBP), thiab cov khoom hloov tau ( antimony Sb, arsenic As, barium Ba, cadmium Cd, chromium Cr, lead Pb, mercury Hg, selenium Se).Cov qauv suav nrog GB 4806.11-2016 "National Food Safety Standard for Rubber Materials and Products in contact with Food", GB 9685-2016 "National Food Safety Standard for the Use of Additives in contact with Food Materials and Products", GB 31604.30-2016 "National Food Safety Standard for Determination and Migration of Phthalates in contact with Food Materials and Products" GB 6675.4-2014 "Kev nyab xeeb ntawm cov khoom ua si - Ntu 4: Kev tsiv teb tsaws ntawm cov ntsiab lus tshwj xeeb", thiab lwm yam.
Hauv qhov teeb meem no ntawm "Consumer Lab", peb yuav ncaj qha tshuaj xyuas kev tsiv teb tsaws ntawm silicone kitchenware thaum ua noj, nthuav tawm nws daim ntawv qub, uas yog qhov qhib qhov muag zoo thiab kev ua pa.Hauv kev teb rau cov khoom tsis zoo xws li cov hlau hnyav thiab cov yas yas uas muaj kev txhawj xeeb tshaj plaws rau cov pej xeem thiab cov neeg siv khoom, qhov kev sim tau nthuav qhia tshwj xeeb uas muaj feem xyuam rau kev sim thiab siv cov cuab yeej siv siab heev thiab cov cuab yeej siv rau kev ntsuas thiab ntsuas, siv kev tshawb fawb los kho qhov tseeb.
Han Bing, tus thawj coj ntawm qhov kev sim sib piv ntawm Qingdao Municipal Consumer Protection Commission, thiab Sun Chunpeng, tus kws tshaj lij los ntawm Qingdao Lub Tsev Haujlwm Saib Xyuas Kev Noj Qab Haus Huv Zoo, tau mus xyuas chav tshaj tawm xov xwm ntawm "Consumer Laboratory" los tso tawm cov txiaj ntsig kawg ntawm qhov sim thiab muab cov lus qhia rau cov neeg siv khoom muaj cai.Nws yuav tsum raug sau tseg tias cov txiaj ntsig ntawm qhov kev sib piv no tsuas yog lub luag haujlwm rau cov qauv thiab tsis sawv cev rau qhov zoo ntawm lwm cov qauv lossis cov khoom siv ntawm lub hom.Tsis muaj ib lub tsev twg raug tso cai siv qhov kev xeem sib piv rau kev tshaj tawm yam tsis tau tso cai;Tus 'tus nqi' ntawm tus qauv tsuas yog tus nqi yuav khoom thaum lub sijhawm ntawd.
Hauv chav kuaj lub cev thiab tshuaj lom neeg ntawm Qingdao Lub Tsev Haujlwm Saib Xyuas Kev Nyab Xeeb, 20 cov khoom siv ntawm cov khoom siv silicone raug xa mus rau qhov cub 220 degree thiab hnub nyoog hauv huab cua kub rau 10 teev, simulating qhov kub thiab txias ntawm cov khoom siv silicone thaum siv txhua hnub.Tom qab 10 teev, tshem tawm 20 cov qauv thiab txias rau lawv.Txiav ib cheeb tsam ntawm silica gel los ntawm txhua qhov ntawm 20 tus qauv raws li ib qho kev sim piv rau kev npaj ua qauv.
Cov qauv kuaj muaj hnub nyoog nyob rau hauv cov cua kub ntawm 220 ° C rau 10 teev
Thaum siv silicone spatulas thiab pwm, qhov kev txhawj xeeb tseem ceeb tshaj plaws rau cov pej xeem yog seb ib yam dab tsi yuav tsiv tawm.Qhov kev sim ua haujlwm ntawm 'tag nrho kev tsiv teb tsaws' tuaj yeem ntes cov khoom tsis hloov pauv hauv cov khoom noj khoom haus uas nkag mus rau hauv cov zaub mov.
Kuv pom cov kws tshaj lij hauv chav sim muab cov khoom siv silicone tso rau hauv cov khoom noj simulant ntawm 4% acetic acid thiab 50% ethanol, soaking rau 4 teev ntawm 100 ℃, thiab tom qab ntawd muab cov tshuaj so rau hauv lub tais evaporating kom txog thaum nws evaporates kom qhuav.Lub sijhawm no, qee qhov hauv qab ntawm cov tais evaporating zoo li tau ua tib zoo ntxuav, tsis muaj dab tsi;Qee tus tuaj yeem pom ntawm qhov muag liab qab nrog me me ntawm cov seem dawb txuas nrog, uas zoo li me ntsis "scale".
Cov seem nyob hauv qab ntawm cov tais diav evaporating yog cov khoom siv silicone
Siv acetic acid thiab ethanol los simulate lub oily thiab acidic ib puag ncig nyob rau hauv uas silicone tais diav yog siav, cov residue uas txhua leej txhua tus pom yog cov tsis volatile tshuaj uas tsiv tawm."Sun Chunpeng, tus kws tshaj lij los ntawm Qingdao Quality Inspection Institute, tau qhia tias cov khoom tsis hloov pauv hauv cov khoom noj khoom haus tuaj yeem txav mus rau hauv cov zaub mov, uas tuaj yeem tsim cov ntxhiab tsw yooj yim, cuam tshuam rau saj ntawm cov zaub mov thiab tseem cuam tshuam rau tib neeg lub cev noj qab haus huv.
Txawm li cas los xij, tag nrho cov ntaub ntawv tsiv teb tsaws tau los ntawm 20 pawg ntawm cov roj hmab spatula thiab cov qauv silicone pwm hauv qhov kev sim no tseem muaj kev ntseeg siab - tag nrho cov kev tsiv teb tsaws ntawm silicone spatula feem ntau yog concentrated nyob rau hauv thaj tsam ntawm 1.5 mg / square decimeter mus rau 3.0 mg / square decimeter. , thaum tag nrho kev tsiv teb tsaws ntawm silicone pwm feem ntau yog concentrated nyob rau hauv thaj tsam ntawm 1.0 mg / sq.Tsis tas li ntawd, cov txiaj ntsig ntawm tag nrho cov kev tsiv teb tsaws ntawm silicone spatula thiab silicone pwm tsis pom qhov hloov pauv nrog tus qauv nqi.
Qhov kev sim "siv cov poov tshuaj permanganate" yog lwm qhov kev sim uas tuaj yeem ua rau kev tsiv teb tsaws ntawm cov khoom siv silicone kom "qhia lawv daim ntawv qub".Cov neeg ua haujlwm sim muab tso rau hauv qhov txiav silica gel hauv dej ntawm 60 ℃ rau 2 teev.Cov kev daws teeb meem yog titrated nrog poov tshuaj permanganate daws, thiab kev noj cov nqi ntawm poov tshuaj permanganate thaum kawg txiav txim siab los ntawm kev hloov xim, kev suav ntau npaum li cas, thiab lwm yam.
Cov seem nyob hauv qab ntawm cov tais diav evaporating yog cov khoom siv silicone
Siv acetic acid thiab ethanol los simulate lub oily thiab acidic ib puag ncig nyob rau hauv uas silicone tais diav yog siav, cov residue uas txhua leej txhua tus pom yog cov tsis volatile tshuaj uas tsiv tawm."Sun Chunpeng, tus kws tshaj lij los ntawm Qingdao Quality Inspection Institute, tau qhia tias cov khoom tsis hloov pauv hauv cov khoom noj khoom haus tuaj yeem txav mus rau hauv cov zaub mov, uas tuaj yeem tsim cov ntxhiab tsw yooj yim, cuam tshuam rau saj ntawm cov zaub mov thiab tseem cuam tshuam rau tib neeg lub cev noj qab haus huv.
Txawm li cas los xij, tag nrho cov ntaub ntawv tsiv teb tsaws tau los ntawm 20 pawg ntawm cov roj hmab spatula thiab cov qauv silicone pwm hauv qhov kev sim no tseem muaj kev ntseeg siab - tag nrho cov kev tsiv teb tsaws ntawm silicone spatula feem ntau yog concentrated nyob rau hauv thaj tsam ntawm 1.5 mg / square decimeter mus rau 3.0 mg / square decimeter. , thaum tag nrho kev tsiv teb tsaws ntawm silicone pwm feem ntau yog concentrated nyob rau hauv thaj tsam ntawm 1.0 mg / sq.Tsis tas li ntawd, cov txiaj ntsig ntawm tag nrho cov kev tsiv teb tsaws ntawm silicone spatula thiab silicone pwm tsis pom qhov hloov pauv nrog tus qauv nqi.
Qhov kev sim "siv cov poov tshuaj permanganate" yog lwm qhov kev sim uas tuaj yeem ua rau kev tsiv teb tsaws ntawm cov khoom siv silicone kom "qhia lawv daim ntawv qub".Cov neeg ua haujlwm sim muab tso rau hauv qhov txiav silica gel hauv dej ntawm 60 ℃ rau 2 teev.Cov kev daws teeb meem yog titrated nrog poov tshuaj permanganate daws, thiab kev noj cov nqi ntawm poov tshuaj permanganate thaum kawg txiav txim siab los ntawm kev hloov xim, kev suav ntau npaum li cas, thiab lwm yam.
Cov txiaj ntsig ntawm kev sim qhia tau hais tias kev noj cov poov tshuaj permanganate hauv silicone shovels feem ntau yog concentrated nyob rau hauv thaj tsam ntawm 2.0 mg / kg txog 3.0 mg / kg, thaum noj cov poov tshuaj permanganate hauv silicone pwm feem ntau yog concentrated nyob rau hauv thaj tsam ntawm 1.5 mg / kg. rau 2.5 mg / kg, uas ua tau raws li cov kev cai ntawm lub teb chaws tus qauv GB 4806.11-2016 (≤ 10 mg / kg).Qhov txiaj ntsig tshwm sim ntawm kev noj cov poov tshuaj permanganate rau silicone shovels thiab silicone pwm tsis qhia txog kev hloov pauv nrog cov qauv nqi.
> > > Cov cuab yeej tsom xam: Cov hlau hnyav tau raug kuaj pom, thiab qhov muaj nuj nqis ua raws li cov qauv hauv tebchaws
Puas yuav silicone kitchenware tso cov tshuaj lom xws li cov hlau hnyav thiab cov yas yas thaum ua noj?Qhov no yog lwm qhov kev txhawj xeeb loj rau pej xeem.Kev tshawb nrhiav kev sim ntawm cov hlau hnyav thiab plasticizers tau muab faib ua ob theem loj: phau ntawv coj ua qauv npaj thiab tshuaj xyuas nrog cov cuab yeej tshawb nrhiav.Nws yog ib qho tsim nyog hais tias vim tias cov hlau hnyav yog ib qho kev txhawj xeeb rau cov neeg siv khoom, qhov kev sim no tau nce ntxiv kom pom cov hlau hnyav.
Raws li qhov yuav tsum tau ua ntawm lub teb chaws tus qauv GB 4806.11-2016 "National Food Safety Standard Rubber Materials and Products in Contact Food", tom qab kev sim thiab tshuaj xyuas, tag nrho cov txiaj ntsig ntawm cov hlau hnyav (xws li txhuas) cov khoom sim ntawm 20 batch ntawm silicone shovels thiab silicone pwm ua tau raws li qhov yuav tsum tau ua.
Post lub sij hawm: May-18-2023
