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Lihlahisoa

Dibenzoylmethane (DBM)

Tlhaloso e Khutšoanyane:

Lebitso: Dibenzoylmethane (DBM)
CAS NO: 120-46-7
Tsela ea molek'hule: C15H12O2
Boima ba 'mele: 224.25
Morero oa sebopeho:

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Product Qaqileng

Lihlahisoa tsa Product

Index ea boleng:

Ponahalo: phofo e mosehla ea kristale

Litaba: ≥ 99%

Qhibiliha ntlha: 77-79 ° C

Sebaka se belang: 219-221 ° CMM Hg

Flash ntlha: 219-221 ° C / 18mm

Thupelo

1. E sebelisoa haholo joalo ka mofuta oa setlama se chesang se se nang chefo bakeng sa PVC le 1,3-diphenyl acrylonitrile (DBM). E le setsi se secha sa mocheso o thusang mocheso oa PVC, e na le phetisetso e phahameng, e seng chefo ebile e se na tatso; e ka sebelisoa ka calcium / zinc e tiileng kapa e nang le metsi, barium / zinc le lisebelisoa tse ling tsa mocheso, tse ka ntlafatsang haholo 'mala oa pele, ponaletso, botsitso ba nako e telele ba PVC, hammoho le pula le "zinc tuk" nakong ea ts'ebetso. E sebelisoa haholo ho tsa bongaka, liphutheloana tsa lijo le lihlahisoa tse ling tse se nang chefo tse pepeneneng tsa PVC (joalo ka libotlolo tsa PVC, maqephe, lifilimi tse bonaletsang, jj.).

2. Kenyelletso ea li-stabilizers tsa calcium le zinki: (li-stabilizers tsa setso joalo ka li-stabilizers tsa letsoai le li-cadmium salt stabilizers) li na le likotsi tsa ho hlaka pepeneneng, phapang ea mmala oa pele, tšilafalo e bonolo ea sefapano le chefo. Zinc le cadmium ke li-stabilizers tse se nang chefo. E na le botsitso bo babatsehang ba mocheso le mafura, 'mala oa pele o motle le botsitso ba mmala.

Botsitso ba mocheso oa calcium / zinc e hloekileng bo bobe, ka hona, mefuta e fapaneng ea metsoako e lokela ho kopanngoa ho latela theknoloji ea ts'ebetso le ts'ebeliso ea sehlahisoa. Har'a li-stabilizers tse thusang, β - diketone (haholo-holo stearoyl benzoyl methane le dibenzoyl methane) li bohlokoa haholo linthong tse kopanyang calcium.

Mokhoa oa maiketsetso

Ts'ebetso ea mantlha ea tlhahiso ea indasteri e ne e le ka tsela e latelang: ho sebelisa methoxide e tiileng ea sodium e le sethothetsi, acetophenone le methyl benzoate li ile tsa arabeloa ke ho ts'oaroa ha Claisen ka xylene ho fumana dibenzoylmethane. Hobane phofo e tiileng ea sodium methoxide e ka chesoa habonolo ebile ea phatloha, 'me ho bonolo ho e bola ha u kopana le metsi, mokelikeli o lokela ho felloa ke metsi pele o eketsoa, ​​ebe methoxide e tiileng ea sodium e tlameha ho eketsoa tlasa ts'ireletso ea naetrojene kamora ho pholile ho isa ho 35 ℃. Ts'ebetso ea karabelo e tlameha ho sirelletsoa ke naetrojene, mme ts'ebeliso ea methoxide e tiileng ea sodium e na le kotsi e kholo ea ts'ireletso le ts'ebeliso e kholo ea matla. Sekhahla sa molar sa acetophenone: methyl benzoate: methoxide e tiileng ea sodium e ne e le 1: 1.2: 1.29. Kakaretso ea sehlahisoa sa nako e le 'ngoe ea sehlahisoa e ne e le 80%, mme chai e felletseng ea joala ba mme e ne e le 85.5%.

Ts'ebetso e ncha ea tlhahiso e kholo e ka tsela e latelang: 3000l xylene solvent e eketsoa ho sekontiri, 215kg e tiisitsoeng ea sodium hydroxide e eketsoa, ​​e hlohlelletsa, mocheso o nyolohela ho 133 ℃, mme karoloana e tlase ea metsi e fetoha mouoane; joale 765kg methyl benzoate e eketsoa, ​​mocheso o nyolohela ho 137 ℃, 500kg acetophenone e eketsoa ka tsela e theohelang, 'me mocheso oa karabelo o bolokoa mocheso oa kamore 137-139 9. Ka ho eketsoa ha acetophenone, mokelikeli oa fepa butle-butle o ba motenya. Sehlahisoa sa methanol se tlosoa ts'ebetsong mme karabelo e tsoela pele ka lehlakoreng le letle. Motsoako o kopantsoeng oa methanol le xylene oa fetoha mouoane. Boloka lihora tse 2 kamora ho oa. Ha ho se na distillate, karabelo e ea fela.

Paka: 25kg / mokotla.

Mehato ea ho boloka: boloka ka polokelo e pholileng, e omileng le e nang le moea o kenang moea hantle.

Bokhoni ba selemo le selemo: Lithane tse 1000 / selemo


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