Ua ntej PVC tuaj yeem ua rau cov khoom lag luam, nws yuav tsum tau ua ke nrog ntau yam kev sib ntxiv tshwj xeeb. Cov quav ntxiv no tuaj yeem cuam tshuam lossis txiav txim siab ib tus naj npawb ntawm cov khoom lag luam, uas yog; Nws cov yam ntxwv txhua yam, cov huab cua kev nrawm, nws cov xim thiab kev pom tseeb thiab tseeb tias nws yog siv rau hauv daim ntawv thov saj zuj zus. Cov txheej txheem no hu ua compounding. PVC qhov sib txawv nrog ntau yam sib txawv yog ib qho ntawm cov ntaub ntawv muaj ntau yam ua tau zoo thiab yog dab tsi ua rau nws xws li ib tug heev viymer. PVC tuaj yeem muab cov khoom siv kom ua rau nws hloov tau rau kev siv hauv chav tsev thiab khoom kho mob. Rigid pvc, tseem hu ua PVC-U (U sawv rau "Inplastastisis") yog siv ntau hauv kev siv tsev xws li cov thav ntawv lub qhov rooj.

Cov kev sib ntxiv ntxiv rau txhua cov ntaub ntawv PVC suav nrog cov cua sov stabilizers, roj nplua nyeem, thiab cov ntaub ntawv ntawm cov khoom siv hloov tau PVC, muaj roj yas. Yeem cov tshuaj sib ntxiv, suav nrog cov tshuaj yeeb dej caw los ntawm kev ua kom muaj kev pab, cov neeg hloov kho cov pob zeb, pigments, mus rau cov neeg sawv cev rau cov ntawv thov tshwj xeeb. Qhov siv tau cov kua txiv tiag tiag hauv cov ntawv thov cov ntaub ntawv hauv av tuaj yeem tsawg li 25% los ntawm huab hwm coj, cov seem uas tseem tshuav rau los ntawm kev ntxiv. Nws cov kev sib raug zoo nrog cov tshuaj ntxiv nrog cov khoom sib ntxiv ntawm cov nplaim hluav taws xob ntxiv txawm tias PVC yog cov tshuaj tua hluav taws me me vim muaj cov tshuaj chlorine hauv cov tshuaj polymer hauv cov duab polymer.

Kev Ua Kom Muaj Kev Ntxiv

Cua Sov Stabilizers

Thaum tshav kub kub stabilizers yog tsim nyog nyob rau hauv tag nrho cov kev tsim qauv los tiv thaiv kev txiav txim siab ntawm pvc los ntawm kub thiab shear thaum ua. Lawv tuaj yeem txhim kho tus PVC tiv thaiv mus rau hnub nruab hnub, thiab ua kom sov thiab tshav kub. Ntxiv rau cov cua sov stabilizers muaj qhov tseem ceeb ntawm cov khoom siv lub cev ntawm tus PVC thiab tus nqi ntawm cov qauv tsim. Kev xaiv ntawm tshav kub stortilizer nyob ntawm ntau yam uas yuav tsum muaj ntawm cov khoom siv PVC, cov kev cai tswj tau zoo thiab tus nqi.

Tej roj qeebCov no yog siv los ua kev sib txhuam thaum ua. Cov roj nplua nyeem sab nraud tuaj yeem txo kev sib txhuam ntawm cov pvc thiab cov khoom ua tiav, nyob rau cov roj ci sab hauv lub cev ua haujlwm ntawm lub tshuab PVC cov granules.

Yas TshiabIb tus muaj zog yog cov tshuaj uas thaum ntxiv rau cov khoom siv, feem ntau yog yas, ua rau nws yoog tau, resilient thiab yooj yim dua lis. Cov piv txwv thaum ntxov ntawm cov yas muaj roj hmab suav nrog cov av nplaum muag muag thiab roj rau cov khoom siv roj hmab rau cov khoom siv tsis muaj dej. Cov tshuaj muaj zog xaiv nyob ntawm cov khoom kawg uas yuav tsum tau los ntawm cov khoom kawg, thiab tseeb hais tias cov khoom lag luam yog rau daim ntawv thov flooring lossis daim ntawv thov kho mob. Muaj ntau dua 300 hom cov tshuaj muaj zog uas hais txog 50-100 yog kev siv lag luam lag luam. Feem ntau siv nrog cov pa hluav taws xob yog cov phthalates uas tuaj yeem faib ua ob pawg sib txawv nrog cov ntawv thov sib txawv thiab kev faib tawm ntau; Cov phthalates qis: Lub cev tsis muaj zog: LMW) tsawg (LMW) phthalates muaj yim lossis tsawg dua cov atoms hauv lawv cov tshuaj ntsuab. Cov no suav nrog, DEHP, DBP, DIBP thiab BBP. Kev siv cov phthalates no nyob hauv Europe tsuas txwv rau qee cov ntawv thov tshwj xeeb. Siab phthalates: High molecular hnyav (hmw) phthalates yog cov uas muaj 7 - 13 carbon atoms hauv lawv cov tshuaj ntsuab. Cov no suav nrog: DINP, DIDP, DPP, DiUp thiab DTDP. HmW phthalates yog kev nyab xeeb hauv ntau txhua hnub suav nrog cov xaim thiab av. Cov kws tshwj xeeb muaj zog, xws li ua kom zoo nkauj, citrates, benzoates yog siv qhov muaj peev xwm tiv thaiv tsis tau kub heev lossis qhov twg ntxiv yog qhov tseem ceeb. Ntau ntawm cov khoom PVC cov khoom peb siv txhua hnub tab sis zoo li coj rau cov tso cai muaj cov tshuaj sib xyaw ua phthalate. Lawv suav nrog txhua yam ntawm cov khoom siv kho mob tseg xws li cov hnab thiab cov ntshav, ntim cov khoom siv hluav taws xob, ntim khoom, thiab khoom ua si. Ib qho ntxiv, phthalates yog siv nyob rau hauv lwm cov tsis yog-PVC daim ntawv thov xws li cov xim av, cov khoom siv roj hmab, cov nplaum thiab qee cov tshuaj pleev ib ce.

Yeem Ntxiv

Cov kev xaiv tau xaiv tau no tsis tsim nyog tsim nyog rau kev ncaj ncees ntawm cov yas tab sis yog siv los kos-rau lwm yam khoom. Kev xaiv cov tshuaj sib ntxiv suav nrog kev ua haujlwm pabcuam AIDS, cuam tshuam Meveliers, fitres, nitrile rubbers, pigments thiab firame retardants.