Yav tom ntej muaj kev nyab xeeb rau cov khoom polyurethane

Thaum Lub Yim Hli 4, 2020, cov tub ceev xwm European tau txais yuav ib qho kev txwv tshiab rau diisocyanates raws li REACH, tsom mus rau kev ua pa thiab kev ua xua rau daim tawv nqaij uas tej zaum yuav tshwm sim los ntawm diisocyanates.

2 Lub Kaum Ob Hlis 2021

 Cov polyurethaneCov Cai

Ib txoj kev tshawb fawb tshiab tsom mus rau kev tsim cov kev sim los ntsuas qhov permeabilityDuab los ntawm: quimono - Pixabay (duab cim).

REACH (Kev Sau Npe, Kev Tshuaj Xyuas, Kev Tso Cai thiab Kev Txwv Cov Tshuaj) yog ib txoj cai ntawm European Union, uas tau tsim los txhim kho kev tiv thaiv tib neeg kev noj qab haus huv thiab ib puag ncig ntawm kev pheej hmoo uas cov tshuaj lom neeg tuaj yeem ua rau, thaum txhim kho kev sib tw ntawm EU kev lag luam tshuaj lom neeg.

Cov nplaum thiab cov sealant Polyurethane (PU) muaj kev nyab xeeb rau kev siv hauv ntau yam khoom hauv ntau yam lag luam, xws li tsheb, rooj tog, kev tsim kho, thiab kev ntim khoom. Kev tsim cov polyurethanes xav tau aromatic lossis aliphatic diisocyanates. Cov no muaj kev nyab xeeb thaum siv raws li cov kev ntsuas kev nyab xeeb uas tau teeb tsa. Hauv cov txheej txheem tsim PU, cov diisocyanates, uas ua rau muaj kev cuam tshuam nrog polyols tau siv tag nrho kom lawv tsis muaj nyob hauv cov khoom polyurethane tiav lawm. Qhov kev txwv tsis txwv tsis pub siv cov nplaum thiab cov sealant polyurethane, tab sis tsim cov kev cai cob qhia rau lawv siv kom muaj kev nyab xeeb. Yog li ntawd, cov nplaum thiab cov sealant PU yuav txuas ntxiv siv dav vim lawv muaj peev xwm ua tau ntau yam hauv ntau yam kev siv thiab vim tsis muaj lwm yam thev naus laus zis uas tuaj yeem tsim cov khoom nrog txhua yam khoom zoo li PU muaj.

Txoj Cai REACH EC/1907/2006 hais txog kev tsim thiab siv cov tshuaj lom neeg, thiab lawv cov kev cuam tshuam rau tib neeg kev noj qab haus huv thiab ib puag ncig. Kev txwv thaum Lub Yim Hli 4, 2020 raws li REACH qhia txog qhov xav tau kev cob qhia thiab kev sau daim ntawv lo rau cov neeg siv khoom lag luam lossis cov kws tshaj lij ntawm diisocyanates (ib tus zuj zus lossis ua ke) nrog qhov concentration monomeric ntau dua 0.1% los ntawm qhov hnyav. Kev txwv no siv rau txhua yam kev ua ub no uas yuav muaj kev raug rau diisocyanates. Nws tsis siv rau cov khoom PU uas cov neeg siv khoom siv. Ib qho kev txwv cais txog cov khoom siv rau cov neeg siv khoom twb tau siv lawm.

Cov kev cai yuav tsum tau kawm

Cov neeg siv diisocyanates uas yog cov kws tshaj lij thiab cov neeg ua haujlwm hauv kev lag luam yuav muaj lub luag haujlwm los saib xyuas kom lawv tus kheej thiab lawv cov neeg ua haujlwm tau kawm tiav. Cov thawj coj kuj yuav xav tau kev cob qhia. Txawm hais tias cov neeg muag khoom tsuas yog muaj lub luag haujlwm los qhia cov neeg siv txog qhov xav tau kev cob qhia, lawv tsis muaj lub luag haujlwm los cob qhia cov neeg ua haujlwm. Tsis tas yuav muaj kev lees paub los ntawm cov neeg siv rau cov neeg muag khoom txog kev tau txais cov ntaub ntawv. Cov neeg faib khoom yuav tsum qhia rau lawv cov neeg siv khoom cov ntaub ntawv tau txais los ntawm cov neeg muag khoom.

Kev cob qhia thiab daim ntawv pov thawj, uas suav nrog kev xeem dhau, yuav tsum tau ua tiav rau hnub tim 24 Lub Yim Hli 2023. Cov ntaub ntawv ntawm kev cob qhia rau cov neeg ua haujlwm yuav tsum tau khaws cia los ntawm cov tswv haujlwm. Txhua tsib xyoos, kev txuas ntxiv ntawm kev cob qhia yuav tsum tau ua. Muaj peb theem ntawm kev cob qhia sib raug rau ntau qib ntawm kev pheej hmoo. Yog li ntawd, txhua tus neeg cov ntsiab lus kev cob qhia uas xav tau, yuav nyob ntawm qib ntawm kev pheej hmoo uas lawv raug.

Lub platform cob qhia PU tshiab

FEICA, ua ke nrog European Diisocyanate & Polyol Producers Association (ISOPA), European Aliphatic Isocyanates Producer Association (ALIPA), thiab ntau lwm yam lag luam hauv kev lag luam polyurethane, tau ua haujlwm hnyav los npaj ib qho kev cob qhia kom paub tseeb tias kev siv diisocyanates muaj kev nyab xeeb rau cov neeg tsim khoom thiab cov neeg siv tshaj lij thoob plaws Tebchaws Europe. Ua li no, FEICA kuj xyuas kom meej tias txhua tus neeg siv kawg ntawm PU uas muaj cov nplaum thiab cov sealants thoob plaws Tebchaws Europe txuas ntxiv mus siv diisocyanates kom muaj kev nyab xeeb. Ib lub platform cob qhia tau pib ua lus Askiv thaum Lub Kaum Ib Hlis 2021. Txij li 1 Lub Kaum Ob Hlis nws yuav muaj nyob rau hauv German.

Lub platform yuav nkag tau thoob plaws EU, thiab txhua yam khoom siv cob qhia kuj tseem yuav muaj nyob rau hauv txhua hom lus EU thaum nruab nrab xyoo 2022. Daim ntawv pov thawj rau kev cob qhia dawb rau txhua tus neeg siv kawg ntawm European PU adhesives thiab sealants muaj nyob rau ntawm www.feica.eu. Tsis tas li ntawd, cov khoom siv cob qhia yuav muaj rau kev cob qhia hauv chav kawm.

Cov Luag Haujlwm Sau Npe

Txij li hnub tim 24 Lub Ob Hlis 2022, yuav tsum muaj ib kab lus/daim ntawv lo rau cov khoom uas yuav siv rau hauv kev lag luam lossis kev ua haujlwm uas muaj tag nrho cov monomeric concentration ntau dua 0.1% los ntawm qhov hnyav. Kab lus no yuav nyeem tau tias: "Txij li hnub tim 24 Lub Yim Hli 2023, yuav tsum muaj kev cob qhia txaus ua ntej siv cov khoom no hauv kev lag luam lossis kev ua haujlwm." Kev txwv hnub tim 4 Lub Yim Hli 2020 raws li REACH tsis muab cov ntaub ntawv ntxiv txog cov ntsiab lus ntawm daim ntawv lo (piv txwv li qhov loj me, qhov chaw, lossis hom lus). Peb txhawb kom txhua tus neeg koom nrog pib ua cov kev npaj rau daim ntawv lo sai li sai tau thiab mus saib lub vev xaib FEICA tsis tu ncua rau kev hloov tshiab.