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Distearyl thiodipropionate; Antioxidant DSTDP, ADCHEM DSTDP
cov khoom nthuav dav
DSTDP Powder DSTDP Pastille Tshuaj lub npe: Distearyl thiodipropionate Tshuaj formula: S(CH2CH2COOC18H37)2 Molecular Luj: 683.18 CAS No.: 693-36-7 Nqe lus piav qhia ntawm cov khoom: Cov khoom no yog dawb crystalline hmoov los yog granules. Insoluble hauv dej, soluble hauv benzene thiab toluene. Synonym Antioxidant DSTDP, Irganox PS 802, Cyanox Stdp 3,3-Thiodipropionic acid di-n-octadecyl ester Distearyl 3,3-thiodipropionate Antioxidant DSTDP Distearyl thiodipropionate Antioxidant-STDP 3,3'-Thiodipropionic acidity: crystalline hmoov / Pastilles tshauv: Max.0.10% Melting point: 63.5-68.5 ℃ Daim ntawv thov Antioxidant DSTDP yog ib tug zoo auxiliary antioxidant thiab yog dav siv nyob rau hauv polypropylene, polyethylene, polyvinyl chloride, ABS thiab lubricating roj. Nws muaj high-melting thiab low-volatility. DSTDP kuj tuaj yeem siv ua ke nrog phenolic antioxidants thiab ultraviolet absorbers los tsim cov nyhuv synergistic. Los ntawm kev xav ntawm kev lag luam, koj tuaj yeem xa mus rau tsib lub hauv paus ntsiab lus hauv qab no los xaiv: 1. Kev ruaj ntseg Thaum lub sij hawm tsim khoom, cov tshuaj tua kab mob yuav tsum nyob ruaj khov, tsis yooj yim volatilized, tsis discolored (los yog tsis xim), tsis decomposed, tsis reacted nrog rau lwm yam tshuaj additives, thiab tsis reacted nrog lwm yam tshuaj additives thaum lub sij hawm siv ib puag ncig thiab high-temperature processing. Lwm yam khoom nyob rau saum npoo yog sib pauv thiab yuav tsis corrode ntau lawm cov cuab yeej, thiab lwm yam. 2. Compatibility Cov macromolecules ntawm cov yas polymers feem ntau tsis yog-polar, thaum lub molecules ntawm antioxidants muaj ntau degrees ntawm polarity, thiab ob qho tib si tsis zoo compatibility. Antioxidant molecules yog nyob nruab nrab ntawm polymer molecules thaum kho. 3. Kev tsiv teb tsaws Cov tshuaj tiv thaiv oxidation ntawm cov khoom lag luam feem ntau tshwm sim hauv cov txheej ntiav ntiav, uas yuav tsum tau hloov mus tas li ntawm cov tshuaj antioxidants los ntawm sab hauv ntawm cov khoom mus rau qhov chaw ua haujlwm. Txawm li cas los xij, yog tias tus nqi hloov pauv sai heev, nws yooj yim rau volatilize rau hauv ib puag ncig thiab poob. Qhov kev poob no tsis tuaj yeem zam tau, tab sis peb tuaj yeem pib nrog cov qauv tsim kom txo qis qhov poob. 4. Processability Yog hais tias qhov sib txawv ntawm qhov melting point ntawm cov antioxidant thiab cov melting ntau ntawm cov khoom ua yog loj heev, cov phenomenon ntawm cov anti-oxidant drift los yog anti-oxidant ntsia hlau yuav tshwm sim, uas ua rau uneven tis ntawm cov antioxidant nyob rau hauv cov khoom. Yog li ntawd, thaum lub melting point ntawm cov antioxidant yog qis dua cov khoom ua kub los ntawm ntau tshaj 100 ° C, cov antioxidant yuav tsum tau ua rau ib tug masterbatch ntawm ib tug tej yam concentration, thiab ces tov nrog cov resin ua ntej siv. 5. Kev ruaj ntseg yuav tsum muaj cov khoom siv dag zog hauv cov txheej txheem tsim khoom, yog li cov tshuaj tua kab mob yuav tsum tsis muaj tshuaj lom lossis tsis muaj tshuaj lom, tsis muaj plua plav lossis hmoov av tsawg, thiab yuav tsis muaj kev phom sij rau tib neeg lub cev thaum ua haujlwm lossis siv, thiab tsis muaj kuab paug rau ib puag ncig. Tsis muaj teeb meem rau tsiaj thiab nroj tsuag. Antioxidants yog ib ceg tseem ceeb ntawm polymer stabilizers. Nyob rau hauv cov txheej txheem ntawm cov khoom siv, yuav tsum tau them nyiaj mloog mus rau lub sij hawm, hom thiab tus nqi ntawm cov tshuaj antioxidants ntxiv kom tsis txhob ua tsis tiav vim ib puag ncig yam.