Kodi Njira Zopangira Ma Polymerization za Nylon 6 ndi Ziti?

Ndi chitukuko chaukadaulo watsopano, kupanga nayiloni 6 kwalowa m'malo mwaukadaulo wapamwamba kwambiri.Malinga ndi kugwiritsiridwa ntchito kosiyanasiyana, njira ya polymerization ya nayiloni 6 ikhoza kugawidwa m'magawo awa.

1. Njira ziwiri za polymerization

Njira imeneyi wapangidwa ndi njira ziwiri polymerization, ndicho chisanadze polymerization ndi pambuyo polymerization njira, amene nthawi zambiri ntchito kupanga mafakitale chingwe nsalu ndi mkulu mamasukidwe akayendedwe.Njira ziwiri za polymerization zimagawidwa mu pre-polymerization pressurization ndi post polymerization decompression.Mu ndondomeko yopanga, pressurization kapena decompression mankhwala ikuchitika molingana ndi kuyerekeza polymerization nthawi, munthu mu mankhwala ndi otsika-poly voliyumu.Kawirikawiri, njira ya post-polymerization decompression ndi yabwino, koma imafuna ndalama zambiri, komanso mtengo wokwera, wotsatiridwa ndi kupanikizika kwakukulu ndi kukakamizidwa kwachibadwa malinga ndi mtengo.Komabe, mtengo wa ntchito ya njirayi ndi wotsika.Mu pre-polymerization pressurization ndi post-polymerization decompression kupanga njira, pa pressurization siteji, zosakaniza kupanga ndi osokonezeka ndiyeno zonse mu riyakitala, ndiyeno madzi potsekula mphete anachita ndi tsankho polymerization anachita ikuchitika. pa kutentha kwapadera.Njirayi ndi endothermic reaction.Kutentha kumakhala kumtunda kwa chubu cha polima.Panthawi yokakamiza, polima amakhala mu chubu cha polima kwa nthawi yayitali ndikulowa mu polima, momwe kukhuthala kwa polima opangidwa kudzafika pafupifupi 1.7.

2. Kupitiriza polymerization njira pa kuthamanga yachibadwa

Njirayi imagwiritsidwa ntchito popanga riboni ya m'nyumba ya nayiloni 6. Zomwe zili: Polima yokulirapo mosalekeza imatengedwa ndi kutentha mpaka 260 ℃ ndi nthawi ya polymerization kwa maola 20.Oligomer yotsala mu gawolo imapezeka pamene madzi otentha amatsutsana ndi zamakono.Kuwongolera kachitidwe ka DCS ndi kuyanika mpweya wa ammonia kumatengedwanso.The ndondomeko monomer kuchira utenga umisiri wa mosalekeza atatu zotsatira evaporation ndi ndende ndi discontinuous distillation ndi ndende ya yotengedwa madzi.Ubwino wa njira: Wabwino mosalekeza ntchito kupanga, linanena bungwe mkulu, mkulu mankhwala khalidwe, dera laling'ono wotanganidwa kupanga ndondomeko.Njirayi ndi ukadaulo wofananira popanga riboni yapakhomo pano.

3. Njira yokhazikika ya autoclave polymerization

Amagwiritsidwa ntchito kwambiri popanga mapulasitiki a engineering ang'onoang'ono.Mulingo wopanga ndi 10 mpaka 12t/d;Kutulutsa kwa autoclave imodzi ndi 2t/batch.Nthawi zambiri, kupanikizika pakupanga ndi 0,7 mpaka 0.8mpa, ndi mamasukidwe akayendedwe amatha kufika 4.0, ndi 3.8 nthawi yabwinobwino.Ndi chifukwa ngati mamasukidwe akayendedwe ndi apamwamba kwambiri, linanena bungwe adzakhala otsika.Ikhoza kugwiritsidwa ntchito kupanga pa 6 kapena pa 66. Njirayi ili ndi njira yosavuta yopangira, yomwe imakhala yosavuta kusintha mitundu komanso yosinthika kupanga.