Antioxidant H CAS 74-31-7 Antioxidant DPPD
Dzina la Chingerezi:N, N-diphenyl-p-phenylenediamine
Chidule cha Chingerezi:DPPD
CAS RN:74-31-7
1. Kapangidwe ka thupi ndi mankhwala:
1.1 Fomula ya molekyulu: C18H16N2
1.2 Kulemera kwa mamolekyulu: 260.34
1.3 Mphamvu yokoka yeniyeni: 1.2
1.4 Kusungunuka: Sungunulani mu benzene, etha ndi acetone. Sungunulani pang'ono mu ethanol. Sungunulani m'madzi.
1.5 Malo otentha: 220-225℃, 0.5mmHg
1.6 Kukhazikika ndi kuchitapo kanthu: Kutha kuyaka. Ikayikidwa pa mpweya kapena kuwala kwa dzuwa, mankhwalawa amasungunuka ndikusintha mtundu wake. Ikakhudzidwa ndi hydrochloric acid yotentha, imakhala yobiriwira.
1.7 Katundu: Kuchuluka kwa okosijeni wa latex ndi mankhwala a rabara kumadalira mtundu wa polima womwe ukukhudzidwa. Mavuto ndi monga kusintha kwa mitundu, kutayika kwa kusinthasintha, kutayika kwa mphamvu yokoka komanso kuchepa kwa kukana kukhudzidwa, ukalamba, ming'alu ndi kuwonongeka kwina kwa pamwamba. Ma antioxidants a rabara amapereka magwiridwe antchito ndi chitetezo chofunikira pakugwiritsa ntchito monga rabala ndi mapulasitiki, kuteteza ma polima ku kuwonongeka kwa okosijeni chifukwa cha kutentha, kuwala, kutha kwa mpweya, peroxides, shear, ndi zinthu zina zosinthika. DPPD antioxidant H imapereka kukhazikika kwa kutentha kwa nthawi yayitali komanso kukhazikika kwa mitundu; imagwira ntchito bwino mu filimu, ulusi, ndi zinthu zokhuthala; ndipo imagwira ntchito bwino m'makina odzazidwa.
| Chinthu | Mndandanda | ||
| Yoyengedwa | Giredi yoyamba | Giredi yachiwiri | |
| Malo oyambira kusungunuka, ℃ | ≥140.0 | ≥135.0 | ≥125.0 |
| Phulusa lochuluka, %(m/m) | ≤0.40 | ≤0.40 | ≤0.40 |
| Kuchepetsa kutentha, %(m/m) | ≤0.40 | ≤0.40 | ≤0.40 |
| Zotsala kudzera mu kuzunguliridwa (maukonde 100), % (m/m) | ≤1.0 | ≤1.0 | ≤1.0 |
| Maonekedwe | Ufa wa imvi kapena bulauni | ||
Antioxidant H/DPPD ingagwiritsidwe ntchito ngati antioxidant mu solid propellant kuti iwonjezere kukhazikika kwa chinthucho. Yagwiritsidwa ntchito pa rabara yachilengedwe, styrene-butadiene, acrylonitrile-butadiene, butadiene, butyl, hydroxyl, polyisoprene kuti ikhale ndi magwiridwe antchito monga moyo wabwino wosinthasintha komanso kulakalaka kukulitsa modulus yolimba, kulimbitsa ntchito yoteteza ku hot-oxygen, ozone ndi zitsulo zina zovulaza monga mkuwa, manganese popanda kukhudza kuphulika kwa rabara. Imatha kuthetsa vuto la ukalamba lomwe lilipo mu rabara lakuda pomwe antioxidant H imagwiritsidwa ntchito limodzi ndi antioxidant D. Kuphatikiza apo, ingagwiritsidwenso ntchito ngati hot-oxygen stabilizer ya mapulasitiki opanga monga polyethylene, polypropylene, polyamide, polyformaldehyde kuti iwonjezere magwiridwe antchito awo olimbana ndi nyengo.
Kugwiritsa Ntchito: 1) Antioxidant H/DPPD (N,N'-Diphenyl-p-phenylenediamine) imagwiritsidwa ntchito ngati antioxidant komanso stabilizer ya rabara, mafuta a petroleum ndi zakudya. Imagwiritsidwanso ntchito ngati choletsa polymerization komanso choletsa kuwonongeka kwa mkuwa. Ndi mankhwala opangira utoto, mankhwala, mapulasitiki, ndi zowonjezera zotsukira.
2) Antioxidant H/DPPD imagwiritsidwanso ntchito popanga ma polyolefin osalimba komanso mafilimu a PVC ndi PVB.
3) Antioxidant H/DPPD imagwiritsidwa ntchito kwambiri mu ma lattice ndi rabara ambiri achilengedwe komanso opangidwa.
Kulongedza:Chikwama cholukidwa chokhala ndi thumba la pulasitiki, cholemera 20 kg pa thumba lililonse.
Malo Osungira:Imasungidwa pamalo ozizira komanso opumira mpweya. Nthawi yosungiramo mankhwala ndi miyezi 12 kuchokera tsiku lopangidwa. Imapezekabe ngati zotsatira zoyesedwanso zikugwirizana ndi tsiku lotha ntchito.
Malangizo achitetezo:Poizoni. Magolovesi a rabara, chopumira ndi zoteteza maso ziyenera kugwiritsidwa ntchito pochita opaleshoni ngati zakhudzana ndi khungu, maso.
Mayendedwe:Pewani mvula, kutentha kwambiri, kapena kukhudzana ndi kutentha kwambiri.
