Imikhiqizo

Inkomba yekhwalithi:

Ukubukeka: i-powder ephuzi ekhanyayo ephuzi

Okuqukethwe: ≥ 99%

Iphuzu lokuncibilika: 77-79 ° C

Iphuzu lokubila: 219-221 ° CMM Hg

Iphuzu le-Flash: 219-221 ° C / 18mm

Umyalo:

1. Isetshenziswa kabanzi njengohlobo lwe-stabilizer ye-thermal engenabuthi ye-PVC ne-1,3-diphenyl acrylonitrile (DBM). Njengesiqinisi esisha sokushisa esisizayo se-PVC, inokudlulisa okuphezulu, okungenabuthi futhi okunganambitheki; ingasetshenziswa nge-calcium / zinc eqinile noma ewuketshezi, i-barium / zinc kanye nezinye izinto zokuvikela ukushisa, ezingathuthukisa kakhulu ukufaka umbala kokuqala, ukwenza izinto obala, ukuzinza kwesikhathi eside kwe-PVC, kanye nemvula kanye "nokushisa kwe-zinc" ngesikhathi sokucubungula. Isetshenziswa kabanzi kwezokwelapha, ukupakisha kokudla kanye neminye imikhiqizo ye-PVC esobala (njengamabhodlela e-PVC, amashidi, amafilimu asobala, njll.).

2. Ukwethulwa kwe-calcium ne-zinc stabilizers: (izinto zokuzinzisa zendabuko ezinjengama-lead lead stabilizers kanye ne-cadmium salt stabilizers) zinokubi kokungabonakali obala, umehluko wombala wokuqala, ukungcoliswa kalula kwe-cross kanye nobuthi. I-Zinc ne-cadmium yizinto zokuqinisa ezingezona ezinobuthi. Inokusimama okuhle kakhulu kokushisa nokuthambisa, ukufaka umbala okuhle kakhulu nokuqina kombala.

Ukuzinza okushisayo kwe-calcium / zinc isimame esimsulwa akukuhle, ngakho-ke izinhlanganisela ezahlukahlukene kufanele zihlanganiswe ngokuya ngobuchwepheshe bokucubungula nokusetshenziswa komkhiqizo. Phakathi kokuqiniswa okusizayo, i-dik - diketones (ikakhulukazi i-stearoyl benzoyl methane ne-dibenzoyl methane) zibalulekile ekuqiniseni kwe-calcium / zinc.

Indlela yokwenza

Inqubo yokuqala yokukhiqizwa kwezimboni yayimi ngale ndlela elandelayo: ukusebenzisa i-methoxide eqinile ye-sodium njenge-catalyst, i-acetophenone kanye ne-methyl benzoate yenziwa yi-Claisen condensation e-xylene ukuthola i-dibenzoylmethane. Ngoba i-sodium methoxide powder eqinile iyasha futhi iyaqhuma, futhi kulula ukubola lapho uhlangana namanzi, isincibilikisi kufanele sishiswe amanzi ngaphambi kokungeza, bese kufakwa i-methoxide eqinile ye-sodium ngaphansi kokuvikelwa kwe-nitrogen ngemuva kokupholisa iye ku-35 ℃. Inqubo yokuphendula kufanele ivikelwe yi-nitrogen, futhi ukusetshenziswa kwe-methoxide eqinile ye-sodium kunengozi enkulu yokuphepha nokusetshenziswa kwamandla okukhulu. Isilinganiso se-molar se-acetophenone: i-methyl benzoate: i-methoxide eqinile ye-sodium yayingu-1: 1.2: 1.29. Isilinganiso sesikhathi esisodwa somkhiqizo sasingama-80%, kanti isivuno esiphelele sikamama wotshwala sasingama-85.5%.

Inqubo entsha yokukhiqiza enkulu imi kanje: I-3000l xylene solvent yengezwa ku-reactor, i-215kg i-sodium hydroxide eqinile iyangezwa, kuvuselelwa kuqalwe, izinga lokushisa likhuphuke laya ku-133 and, kanti amanzi amancane wengxenyenamba ayahwamuka; bese kufakwa i-765kg methyl benzoate, izinga lokushisa lenyuswa laya ku-137 ℃, i-acetophenone engu-500kg yengezwa ngokuya phansi, kanti ukushisa kokuphendula kugcinwa ekamelweni lokushisa elingu-137-139 ℃. Ngokungezwa kwe-acetophenone, uketshezi lokuphakelayo luya luba lukhuni kancane kancane. I-methanol yomkhiqizo iyasuswa kunqubo yokuphendula futhi ukusabela kuqhubeka ngendlela efanele. I-solvent exubile ye-methanol ne-xylene iyahwamuka. Gcina amahora amabili ngemuva kokuyeka. Lapho cishe kungekho distillate, ukusabela kuyaphela.

Ukupakisha: 25kg / isikhwama.

Izinyathelo zokuphepha zesitoreji: gcina endaweni yokugcina impahla epholile, eyomile nenomoya.

Amandla wonyaka: Amathani ayi-1000 / ngonyaka