Flame retardant mechanism yeMelamine Cyanurate

Melamine Cynurate(MCA) chinhu chinowanzo shandiswa kwezvakatipoteredza chinodzoreredza moto, chinoshandiswa zvakanyanya mu polymer zvinhu zvakaita se polyamide (Nylon, PA-6/PA-66), epoxy resin, polyurethane, polystyrene, polyester (PET, PBT), polyolefin uye halogen- waya yemahara netambo. Yayo yakanaka kwazvo inodzoreredza murazvo zvivakwa, yakaderera muchetura uye yakanaka kugadzikana kwekupisa kwaita kuti ive nehanya zvakanyanya uye ishandiswe muminda yemagetsi, mota uye kuvaka.

Melamine Cyanurate ikamu rinogadzirwa nekuita kweMelamine uye cyanuric acid. Iyo molecular lattice chimiro chakaumbwa nehydrogen bonding ine hupfumi hwenitrogen zvinhu. Izvi zvinobvumira Melamine Cyanurate kuburitsa imwe huwandu hwenitrogen pakupisa kwakanyanya, nekudaro ichidzivirira kupararira kwemirazvo. Chimiro chayo chemakemikari chinotarisa kuti ine yakanaka yekudziya kugadzikana, mechanical simba uye yakanakisa murazvo retardant maitiro.

Pamusoro pezvo, MCA haina zvinhu zvinokuvadza zvehalogen, saka yakashandiswa zvakanyanya muzviitiko zvakawanda nepamusoro pezvakatipoteredza uye hutano zvinodiwa, kunyanya mumidziyo yemumba, zvekuvakisa uye machira.

 

Flame retardant mechanism yeMelamine Cyanurate

Iyo murazvo unodzoreredza mashandiro eMelamine Cyanurate inonyanya kuratidzwa mukuora kwayo hunhu pakupisa kwakanyanya uye inhibitory mhedzisiro yeakaumbwa kabhoni layer pakupararira kwemoto. Kunyanya, iyo murazvo inodzoreredza mhedzisiro yeMCA inogona kuongororwa kubva pane zvinotevera zvinhu:

(1) Kuburitswa kwenitrogen kutadzisa kupihwa kweokisijeni

MCA mamorekuru ane huwandu hukuru hwenitrogen zvinhu. Munguva yekupisa, zvinhu zve nitrogen zvichaburitswa kuita gasi (kunyanya nitrogen gasi). Nitrogen gasi pachayo haitsigire kupisa, saka inokwanisa kudzikisa huwandu hweokisijeni padyo nemoto, kuderedza tembiricha yemurazvo, uye nekudaro inonoke chiyero chekupisa uye kudzivirira kupararira kwekupisa. Maitiro aya akakosha pakuvandudza murazvo unodzoreredza zvimiro zvezvinhu, kunyanya pasi pemamiriro ekushisa.

(2) Kurudzira kuumbwa kweiyo carbonized layer

Munguva yepyrolysis maitiro, MCA inoora uye inogadzira iyo carbonized layer panguva yekupisa kwekupisa. Iyi inert carbonized layer ine yakanakisa thermal insulation properties uye inogona kugadzira chipingamupinyi pakati penzvimbo yekupisa nenzvimbo isina kupiswa, kudzivirira kutamisa kupisa uye kuwedzera kudzikamisa kupararira kwemurazvo.

Mukuwedzera, iyo carbonized layer inogonawo kuparadzanisa okisijeni mumhepo, ichigadzira chidziviriro chemuviri, ichiwedzera kuderedza kusangana kweokisijeni nezvinopisa, nokudaro zvichidzivirira kudzivirira kupisa. Kuumbwa uye kugadzikana kweiyi carbonized layer ndiyo kiyi yekuti MCA inogona kuita basa semurazvo wemoto.

(3) Chemical reaction inoburitsa mhute yemvura

Pasi pemamiriro ekunze ekupisa, MCA ichaita decomposition reaction uye kuburitsa imwe huwandu hwemhute yemvura. Utsi hwemvura hunogona kunyatso dzikisa tembiricha yenzvimbo uye kubvisa kupisa nekubuda, nekudaro kutonhora kunobva moto. Mukuwedzera, kuumbwa kwemhute yemvura kunogonawo kuderedza kuwanda kweokisijeni kumativi emoto, zvichidzivirira kupararira kwemoto.

(4) Synergistic mhedzisiro nezvimwe zvinowedzera

Pamusoro peiyo inodzoreredza murazvo, Melamine Cyanurate inogona zvakare kuwiriranisa nemamwe maretardants emoto kana mafirita kuti awedzere kudzoreredza kwemoto zvimiro zvechinhu. Semuyenzaniso, MCA inowanzo shandiswa musanganiswa ne phosphorus flame retardants, inorganic fillers, nezvimwewo, izvo zvinogona kuvandudza kugadzikana kwekupisa uye mashandiro emuchina wezvinhu uye kuita yakawanda yakazara murazvo retardant mhedzisiro.

 

Zvakanakira uye Mashandisirwo eMelamine Cyanurate

(1) Yakasununguka uye isina chepfu

Kana ichienzaniswa neyakajairwa halogen murazvo retardants, MCA haiburitse magasi ehalogen anokuvadza (akadai sehydrogen chloride, hydrogen bromide, nezvimwewo) panguva yekudzoreredza moto, kuderedza kusvibiswa kune zvakatipoteredza uye zvinogona kukanganisa hutano hwevanhu. Iyo nitrogen yekuburitsa maitiro eMCA haina kuchengetedzeka, saka ine hushamwari hwakatipoteredza panguva yekushandiswa uye ine zvishoma zvinokanganisa nharaunda.

(2) Kugadzikana kwakanaka kwekushisa uye kusagadzikana kwemamiriro ekunze

MCA ine high thermal kugadzikana, inogona kuchengetedza yakagadzikana makemikari zvinhu pakupisa kwakanyanya, uye zvinobudirira kudzivirira kupisa kunokonzerwa nekupisa kwakanyanya. Mune dzimwe nzvimbo dzekushanda kwepamusoro-tembiricha, MCA inogona kupa dziviriro yenguva refu semurazvo wemoto.

Mukuwedzera, MCA inewo yakasimba yemamiriro ekunze kuramba, inogona kuchengetedza kushanda kwakanaka mukushandiswa kwenguva refu, uye kuenderana nemamiriro ekunze akasiyana.

(3) Utsi hushoma

MCA inoburitsa hutsi hushoma kana ichipisa kusvika pakupisa kwakanyanya. Zvichienzaniswa neyekare halogen murazvo retardants, inogona kuderedza zvakanyanya kuburitswa kwemagasi ane muchetura mumoto uye kuderedza kukuvadza kweutsi kuvashandi.

 

Semunhu ane hushamwari uye asina chepfumoto retardant, Melamine Cyanrate ine yakasarudzika murazvo retardant mechanism inoratidza huwandu hwakasiyana hwemashandisiro ekushandisa mumidziyo yemazuva ano. Nekuenderera mberi kwekuvandudzwa kwekuchengetedzwa kwezvakatipoteredza uye kuchengetedza zvinodiwa, Melamine Cyanurate ichashandiswa mune mamwe minda uye ive imwe yepakati pezvikamu zvezvinhu zvinodzoreredza moto.

 

Kuti uwane rumwe ruzivo rwekusarudza MCA yakakunakira, ndapota tarisa kuchinyorwa changu "Nzira Yekusarudza Yakanaka Hunhu Melamine Cyanurate?"Ndinovimba zvichakubatsira iwe.