Reaction polymerization The

Polymers - xeryahooda kaas oo ay leeyihiin miisaan sare kelli gaarey dhowr kun oo unugyo. reaction polymerization waa ku salaysan qalabka casriga ah la helo shaqo oo kala duwan iyo guryaha. Waxay yihiin cufnaanta yar waa mid aad u waara, awoodo si aad u jilciso marka kulul iyo si fudud u qaadaan wax taaj oo kale, kaas oo u ogolaanaya in la helo wax soo saarka ee naqshado kala duwan, iyo tirada. polymers waa inert in deegaanno xoqe, hantiyi guryaha qalabada korontada oo aan Burburiyaan. Sababo la xiriira hantida gaarka ah, kaas oo si fudud loo beddeli karaa marxalad ah ee ereygu wuxuu ahaa, isticmaalka qalabka casriga ah polymeric waxaa si joogto ah la ballaariyo.

Marka kulaylinta iyo qaboojinta ee wax soo saarka ee wax soo saarka kiimikada dhaqmaan laba siyaabood.

Qaar ka mid ah u jilciso marka kulul oo ka qallafin, marka mar kale la qaboojiyey. qalab noocan oo kale ah waxaa ka mid ah waxyaabaha diyaarinta ku salaysan oo ku taala, tusaale ahaan, dareen-celin polymerization of alkenes ah, i.e., polyetylen iyo polypropylene. Waxaa loo yaqaan qalabka thermoplastic. Waxa uu ku la mid ah sida chloride polyvinyl iyo polystyrene.

Polymers of nooc kale oo laga yaabaa in lagu kululeeyo hal mar oo kaliya, tan iyo markii ay ka qallafin, ka dib markii qaboojinta iyo dheeraad ah ma u jilciso hoos kululaynta. qalabka waxaa lagu magacaabaa thermosetting, ay ka mid phenol-formaldehyde ama Beeyada HOL-formaldehyde. Thermoplastics iyo thermosets leeyihiin faa'idooyin. First soo saaray qaab granular. Of iyaga, ka dib markii kulaylinta iyo Jilcinta waxyaabaha diyaar u ah qaab kasta, laakiinse iyagu ma ay hore loo kululayn karaa inta lagu jiro hawlgalka. Arintaan waxaa loo soo saaray sida mass gummy ah.

reaction polymerization ethylene waxaa loo qori karaa sida soo socota: CH2 = CH2 → (-CH2-CH2-) n. Under shuruudo gaar ah, iyadoo ay wada joogaan bilaabaha ah (ay jeclaan lahaayeen gaaska ogsijiin ama xal of waxaay sheegayaan organic ee saliidda) qaadataa meel u dhaxaysa atamka carbon farqiga π-warega (haddii kale bond a double) iyo xarunta u dhexeeya tirada n-Nogo ee xagjirka lacag la'aan sameeyay. reaction polymerization ka soo baxa by farsamo silsilad xagjirka ah. Miisaanka uu leeyahay kelli ah wax polymer waa si toos ah ay ku xidhan tahay n tirada, iyadoo ay sii kordhayaan uu korayo. By hagaajinta xaaladaha cadaanyo polymerization ah, ereygu wuxuu ahaa ee operator polyetylen gaaro helo wax la guryaha la doonayo: isbeddello (ama dhalaali index), xoog, cufnaanta, Taabte khasaaro dielectric, joogto dielectric, iyo kuwa kale.

Avv of polyetylen-kar ama falcelin polymerization ah waa la fuliyay in tigoodu autoclave ama embriyaha at heerkulka ilaa 300 ° C iyo cadaadiska ee 1000 si ay u 3000 ATM. Tani waxay soo bandhigtay lacagta wayn ee kulaylka. Waxaa laga saaro biyo kulul kaas oo bixisey in jaakada nuclear-ka. Degree of khayroon daahirnimo bixisey si kululeeyo saarista biyaha badan ku xiran tahay tayada wax iyo habka ammaanka polymeric. Haddii biyaha waxaa si liidata loo nadiifiyaa oo ku jira nijaasta ahaa oo badan (tus, cusbada darantahay ingeega, sida calcium iyo magnesium siifilisku, anions silicic acid, chlorine, iwm), jaakada warshadan kayd sameeyay ama bir uu bilaabo inuu Burburiyaan. Sababo la xiriira isbeddel ah ee nuclear oo dhumucdiisuna waxay derbiga ah ee dhereg badan kulayl guud ahaan ay dusha noqdo sinnayn, iyo heerkulka of xaaladaha polymerization noqon karaan dumis ah. Iyada oo korodhka weyn ee heerkulka lagu qayilo ee polymer ku dhici kara ama daatay la burburinta nuclear-ka.

reaction polymerization The, oo sabab u ah oo polyetylen sameeyay, ka dhici karaa heerkulka hoose iyo cadaadis. Laakiin tani waxay u baahan tahay Hannaan. Hakinta ethylene unreacted, taas oo ka dibna kala maqan iyo polymer la pelletized, polyetylen soo saaray cadaadis hoose, baxo nuclear-ka sida budada ah, ama halkii ganaax ah oo hydrocarbon ah dareeraha haddii polyetylen cadaadis sarreeya oo ka nuclear-ka sida laga baxo dhalaalid. Budada waxaa gooni ka dareeraha iyo nijaasta ka soo Hannaan soo maydhay, oo markaas granulated iyo qalab gaar ah loo yaqaan extruder.

Sayidka, reaction polymerization ee ethylene warshadaha ee loo isticmaalo ereygu wuxuu ahaa ee polyetylen. GOST 16338-85 soo saaro low-karka polyetylen slurry iyo calaamadaha wajiga gaaska, sida ay GOST 16337-77 saaray sidii autoclave polyetylen-kar ama stamps embriyaha.