PVDC txheej puas tuaj yeem txo cov ntim yas hauv cov zaub mov?
Poly-Vinylidene Chloride (PVDC) yog txheej txheej dej feem ntau siv los txhim kho cov teeb meem thiab txo cov permeability. Nws ua kom cov zaub mov tshiab, txhim kho lub neej txee, thiab muab ntim rau qhov zoo nkauj zoo nkauj; tag nrho cov zoo uas yog qab lub ntim kev lag luam nyiam rau yas. Raws li cov thermoplastic, PVDC yog hloov tau, meej, thiab yooj yim extruded. Nws clings zoo thiab resists roj thiab lwm yam tshuaj, yog li nws yog feem ntau siv nyob rau hauv kev ntim tshuaj. Nws yooj yim rau laminate, thiab yog tias koj xav tau kev xaiv nyiaj txiag ntau dua, nws tuaj yeem sib xyaw nrog pheej yig dua monomers. Ib qho ntawm cov nyiam tshaj plaws ntawm cov no muaj 85% vinylidene chloride thiab 15% vinyl chloride--feem ntau hu ua Saran qhwv.
Tshaj Khoom Noj
PVDC yog ntau tshaj li qhov thaiv. Nws yog cua sov sealable ntawm ob sab thiab muab kev tiv thaiv zoo li qub. Nws muaj nyob rau hauv qib anti-mist, yog li nws tuaj yeem siv los ua lub thawv ntim khoom, los tsim cov ntsaws ruaj ruaj, hnab ua ntej, thiab rau lamination. Nws yuav luag tsis muaj xim thiab decomposes ntawm lub siab melting point, tsis zoo li yas. Raws li txheej txheej thaiv, nws tiv taus acids, cawv, thiab alkalis zoo, ua rau nws zoo tagnrho rau cov yeeb yaj kiab kho mob. Txhawm rau txhim kho nws cov kev tiv thaiv rau cov kuab tshuaj organic, PVDC tuaj yeem sib xyaw nrog methyl acrylate thiab lwm yam monomers, uas ua rau nws zoo tagnrho rau kev muab cov fibers ntau dua acid thiab alkali tsis kam mus txog 100 degree C. Thaum siv li no, PVDC yog huab cua- resistant txheej nrog thermal stability ntawm ib tug polymer. Tag nrho hauv tag nrho, PVDC yog ib qho zoo kawg nkaus copolymer uas tuaj yeem txo qhovsiv cov yas hla ntau lub lag luam.
