Iimveliso

Isalathiso somgangatho:

Inkangeleko: ukukhanya tyheli crystalline powder

Umxholo: ≥ 99%

Indawo yokunyibilika: 77-79 ° C

Indawo yokubilisa: 219-221 ° CMM Hg

Inqaku leFlash: 219-221 ° C / 18mm

Umyalelo:

1. Isetyenziswa ngokubanzi njengohlobo lwe-non-poxic thermal stabilizer for PVC and 1,3-diphenyl acrylonitrile (I-DBM). Njengesixhobo esitsha sokuqinisa ubushushu kwi-PVC, ine-transmittance ephezulu, engenatyhefu kwaye engenancasa; Ingasetyenziselwa nge-calcium eqinileyo okanye engamanzi / i-zinc, i-barium / zinc kunye nezinye izinto zokuqinisa ubushushu, ezinokuphucula kakhulu umbala wokuqala, ukungafihli, uzinzo lwexesha elide lwe-PVC, kunye nemvula kunye "nokutsha kwe-zinc" ngexesha lokulungiswa. Luphawu olusetyenziswa ngokubanzi kwezonyango, ukupakishwa kokutya kunye nezinye iimveliso zePVC ezingezizo ityhefu (ezinje ngeebhotile zePVC, amashiti, iifilimu ezibonisa ngaphaya, njl.

2. Ukungeniswa kwecalcium kunye ne zinc zinc I-Zinc kunye ne-cadmium zizinto ezingenabungozi. Inokuqina okuzinzileyo kwe-thermal kunye ne-lubricity, imibala egqwesileyo yokuqala kunye nokuzinza kombala.

Ukuzinza kwe-thermal kwe-calcium / zinc ezomeleleyo azicacanga, ke iindidi zeekhompawundi kufuneka zidityaniswe ngokobuchwephesha bokusebenza kunye nokusetyenziswa kwemveliso. Phakathi kwezincedisi ezincedisayo, i-β-diketones (ikakhulu i-stearoyl benzoyl methane kunye ne-dibenzoyl methane) zibalulekile kwi-calcium / zinc composite stabilizers.

Indlela yokwenziwa

Inkqubo yoqobo yokuveliswa kwemizi mveliso yayimi ngolu hlobo lulandelayo: ukusebenzisa i-sodium methoxide eqinileyo njenge-catalyst, i-acetophenone kunye ne-methyl benzoate ziye zenziwa yi-Claisen condensation kwi-xylene ukufumana i-dibenzoylmethane. Ngenxa yokuba umgubo oqinileyo we-sodium methoxide unokutsha kwaye unokudubula, kwaye kulula ukubola xa udibana namanzi, isinyibilikisi kufuneka siphelelwe ngamanzi ngaphambi kokuba sidityaniswe, emva koko kufuneka i-methoxide eqinileyo yesodium mayongezwe phantsi kokhuseleko lwe-nitrogen emva kokupholisa ukuya kuma-35 ℃. Inkqubo yokuphendula kufuneka ikhuselwe yi-nitrogen, kwaye ukusetyenziswa kwe-methoxide eqinileyo yesodium kunengozi enkulu yokhuseleko kunye nokusetyenziswa kwamandla okukhulu. Umlinganiso we-molar we-acetophenone: i-methyl benzoate: i-sodium methoxide eqinileyo yayingu-1: 1.2: 1.29. Isivuno sexesha elinye semveliso yayiyi-80%, kwaye isivuno esibanzi sotywala ongumama sasiyi-85.5%.

Inkqubo entsha yemveliso enkulu yile ilandelayo: i-3000l xylene solvent yongezwa kwi-reactor, yongezwa i-215kg ye-sodium hydroxide eqinileyo, kuvuselelwa kuqalile, iqondo lobushushu liphakanyisiwe laya kwi-133 ℃, kwaye iqhezu lamanzi asezantsi lumphunga; ke i-765kg ye-methyl benzoate iyongezwa, iqondo lobushushu liphakanyisiwe laya kwi-137 ℃, i-acetophenone engama-500kg yongezwa ngokuwela ezantsi, kwaye iqondo lobushushu lokuphendula ligcinwa kubushushu begumbi 137-139 ℃. Ngokudityaniswa kwe-acetophenone, ulwelo lokutya ngokuthe ngcembe luye lukhulu. Imveliso ye-methanol isuswe kwinkqubo yokuphendula kwaye impendulo iqhubeka kwicala elilungileyo. Isinyibilikisi esixubeneyo se-methanol kunye ne-xylene ngumphunga. Gcina iiyure ezi-2 emva kokuyeka. Xa kukho phantse akukho distillate, impendulo iyaphela.

Ukupakisha: 25kg / ingxowa.

Amanyathelo okhuseleko: gcina kwindawo yokugcina izinto epholileyo, eyomileyo kunye nomoya.

Amandla oNyakaIitoni ezili-1000 / ngonyaka