Inayiloni 66 inezinto ezinhle zokusebenzisa imishini, ukumelana nokugqoka kanye nokumelana nokugqwala kwamakhemikhali, futhi isetshenziswa kabanzi emikhakheni yezimoto, kagesi kanye nekagesi. Kodwa-ke, i-PA66 iyimpahla evuthayo, futhi kuzoba khona i-droplet lapho kushisa, okunobungozi obukhulu bokuphepha. Ngakho-ke, kubaluleke kakhulu ukufunda ukuguqulwa kwe-PA66 kwe-flame retardant. Uhlelo lwe-PA66 olubuyisela amalangabi lwaluvame ukubuswa ama-brominated flame retardants, kodwa ama-brominated flame retardants abebhekene nezinkinga ezinkulu zokuvikelwa kwemvelo kanye ne-CTI.
Njengamanje, i-phosphorus retardant ebomvu ingasetshenziswa ezintweni ezivimbela amalangabi e-PA66 ngenxa yokusebenza kahle kwayo kwe-flame retardant kanye nokusebenza kwezindleko ezinhle kakhulu. Kodwa-ke, ama-flame retardants e-phosphorus abomvu emazingeni okushisa aphezulu, emoyeni, kumswakama ophezulu kanye nemvelo ye-alkaline, kulula ukumunca amanzi, okuholela ekutheni kube ne-asidi yezinto ezibonakalayo. I-asidi ye-phosphoric izogqwala izingxenye zensimbi, okuholela ezintweni zikagesi zomkhiqizo.
Ukuze kuvinjwe i-acidification yokusabela kwe-phosphorus ebomvu, kuthuthukiswe ukuzinza kwe-phosphorus ebomvu, indlela ephumelela kakhulu iwukuba i-microcapsule ehlanganiswe ne-phosphorus ebomvu, le ndlela isetshenziswa nge-in-situ polymerization, endaweni ebomvu ye-phosphorus powder yakha izinto ezizinzile ze-polymer, ukuze ukwazi ukuphuma ngaphandle kokuxhumana ne-phosphorus ebomvu nomoya-mpilo namanzi, futhi kunciphisa i-acidification ye-phosphorus ebomvu, kuthuthukisa ukuzinza kokusetshenziswa kwezinto ezibonakalayo.
Kodwa-ke, ama-resin okunamathela ahlukene anemiphumela ehlukile enayiloni eqinile ye-phosphorus retardant. Kulolu cwaningo, amalangabi amabili e-phosphorus abomvu agcotshwe nge-phenolic resin kanye ne-melamine resin akhethiwe ukuze kufundwe imiphumela yalezi zinqamuli zomlilo ezimbili ezihlukene zokuhlanganisa ezimpahleni ezihlukahlukene ze-PA66 ye-flame retardant ethuthukisiwe.
Ukwakheka okuyisisekelo kwezinto kungokulandelayo: inhlaka ye-melamine embozwe i-phosphorus ebomvu ye-flame retardant master material (MC450), i-phenolic resin egcotshwe i-phosphorus flame retardant master material (PF450): okuqukethwe kwe-phosphorus ebomvu okungu-50%. Ukwakhiwa kwenayiloni eqinisiwe ye-flame retardant 66 ingama-58% inayiloni 66, 12% yezinto eziphambili ze-flame retardant, 30% i-glass fiber.
Ishidi lefomula ye-phosphorus ebomvu embozwe ngelangabi elithuthukisiwe le-PA66
| Inombolo yesampula. | PA66 | MC450 | PF450 | GF |
| I-PA66-1# | 58 | 12 | 0 | 30 |
| PA66-2# | 58 | 0 | 12 | 30 |
Ngemva kokuxutshwa nokuguqulwa, inhlanganisela ye-PA66/GF30 egcotshwe nge-flame retardant ebomvu ye-phosphorus yalungiswa, futhi izakhiwo ezihlobene nazo zalinganiswa ngale ndlela elandelayo.
1. Ukuncipha kwelangabi, izinga lokushisa lentambo eshisayo kanye nenkomba ye-creepage mark ehlobene
| Isampula | 1.6 mm | Ukuconsa | I-GWFI | I-GWIT | I-CTI |
| Inombolo | Ibanga lokuvutha | Isimo | / ℃ | / ℃ | /V |
| PA66-1# PA66-2# | V-0 V-0 | no no | 960 960 | 775 775 | 475 450 |
Kungabonakala ukuthi kokubili i-PA66-1# kanye ne-PA66-2# ingafinyelela ebangeni le-flame retardant engu-1.6mm V-0, futhi izinto zokwakha aziconsi ngesikhathi sokusha. Izinhlobo ezimbili ze-phosphorus ebomvu eboshwe nge-flame retardant i-PA66 ethuthukisiwe inomphumela omuhle kakhulu wokubuyiswa komlilo. I-Glow-wire flammability index (GWFI) ye-PA66-1# kanye ne-PA66-2# ingafinyelela ku-960℃, futhi i-GWIT ingafinyelela ku-775℃. Ukusebenza kokuvutha okuqondile kanye nokusebenza kokuhlolwa kwentambo ekhanyayo yezinto ezimbili ezibomvu eziboshwe ngelangabi le-phosphorus kungafinyelela izinga elihle kakhulu.
Kungabonakala futhi ukuthi i-PA66-1 iphakeme kancane kune-CTI ye-# PA66-2#, kanye ne-CTI yezinto ezimbili ezibomvu ze-phosphorous camera retardant PA66 zingaphezu kuka-450V, ezingahlangabezana nezidingo zohlelo lokusebenza zezimboni eziningi.
2. Impahla yemishini
| Isampula Inombolo | amandla aqinile | amandla okugoba | amandla omthelela/(kJ/m2) | |
| /M Pa | /M Pa | Igebe | Ayikho inothi | |
| I-PA66-1# | 164 | 256 | 10.2 | 55.2 |
| PA66-2# | 156 | 242 | 10.5 | 66.9 |
Izakhiwo zemishini ziyizici ezibalulekile eziyisisekelo zenayiloni eqinisiwe ye-flame retardant ukuze isetshenziswe.
Kuyabonakala ukuthi amandla e-tensile namandla okugoba e-PA66-1# aphakeme, okuyi-164 MPa kanye ne-256 MPa ngokulandelana, 5% kanye ne-6% ephakeme kunaleyo ye-PA66-1 #. Amandla omthelela anophawuliwe namandla omthelela anganakiwe we-PA66-1# womabili aphezulu, angu-10.5kJ/m2 kanye no-66.9 kJ/m2 ngokulandelana, 3% kanye no-21% aphezulu kunalawo e-PA66-1#, ngokulandelana. Izakhiwo eziphelele zemishini yezinto ezimbili ezimbozwe nge-phosphorus ebomvu ziphezulu, ezingahlangabezana nezidingo zokusebenza zemikhakha ehlukahlukene.
3. Ukubukeka nokuhogela
Kungabonakala ekubukeni kwezinhlobo ezimbili zamasampula abunjwe ngomjovo agcotshwe nge-phosphorus ebomvu ukuthi i-PA66 (PA66-1#) i-retardant yelangabi elungiswe nge-melamine resin ehuqwe nge-phosphorus ebomvu inobuso obushelelezi, umbala ogqamile futhi ayinawo umcu ontantayo. phezulu. Umbala ongaphezulu we-flame retardant oqiniswe nge-PA66(PA66-2#) olungiswe yi-phenolic resin ehlanganiswe ne-phosphorus ebomvu wawungewona umfaniswano futhi kunemicu eyengeziwe entantayo. Lokhu kungenxa yokuthi i-melamine resin ngokwayo iyimpushana enhle kakhulu futhi ebushelelezi, njengesendlalelo sokumboza esethulwe, izodlala indima yokugcoba kulo lonke uhlelo lwezinto ezibonakalayo, ngakho ukubukeka kwezinto ezibonakalayo kubushelelezi, akukho fibre esobala entantayo.
Izinhlobo ezimbili zezinhlayiya ezibomvu ze-phosphorus-coated retardant ze-PA66 ezithuthukisiwe zabekwa ku-80℃ amahora angu-2, futhi usayizi wazo wephunga wahlolwa. I-Pa66-1 # impahla inephunga elicacile nephunga elinamandla elibukhali. I-Pa66-2 # inephunga elincane futhi alikho iphunga elimnandi elicacile. Lokhu kubangelwa ikakhulukazi i-in situ coating polymerization, i-amine coated resin ama-molecule amancane akulula ukususa ahlanzekile, futhi iphunga le-amine substance ngokwalo likhulu.
4. Ukumuncwa kwamanzi
Ngenxa yokuthi i-PA66 iqukethe amaqembu e-amine ne-carbonyl, kulula ukwakha izibopho ze-hydrogen ngama-molecule amanzi, ngakho-ke kulula ukumunca amanzi lapho esetshenziswa, okuholela kumphumela we-plasticizing, okuholela ekwandiseni umthamo wezinto ezibonakalayo, ukwehla kokuqina, kanye nokukhasa okusobala ngaphansi kwesenzo ukucindezeleka.
Umthelela we-phosphorus ebomvu ejikijelwe ngamalangabi ehlukene ekumunceni kwamanzi okwaziswa kwacwaningwa ngokuhlola ukumuncwa kwamanzi kwento. Kuyabonakala ukuthi ukumuncwa kwamanzi kwezinto ezimbili kuyanda ngokukhula kwesikhathi. Ukumuncwa kwamanzi kokuqala kwe-PA66-1# ne-PA62-2 # kuyafana, kodwa ngokwanda kwesikhathi sokumuncwa kwamanzi, ukumuncwa kwamanzi kwezinto ezihlukene ngokusobala kuhlukile. Phakathi kwazo, i-phenolic resin embozwe inayiloni ebomvu yomlilo we-phosphorus (PA66-2#) inezinga eliphansi lokumunca amanzi elingu-5.8% ngemva kwezinsuku ezingu-90, kuyilapho i-melamine resin embozwe inayiloni ebomvu ye-phosphorus flame retardant (PA66-1#) inamanzi aphakeme kancane. izinga lokumunca lika-6.4% ngemuva kwezinsuku ezingama-90. Lokhu kungenxa yokuthi i-phenolic resin ngokwayo izinga lokumunca amanzi liphansi, futhi inhlaka ye-melamine inamandla okumunca amanzi, ukumelana ne-hydrolysis kubi kakhulu.
5. Ukumelana nokugqwala kwensimbi
Kusukela kumasampula angenalutho kuya ezinhlobonhlobo ezihlukahlukene ezibomvu ze-phosphorus retardant eziqinisiwe zenayiloni zokugqwala kwensimbi emfanekisweni angabona, hhayi ukujoyina, isampula elingenalutho lokugqwala kwendawo yensimbi eguquliwe inayiloni lincane, kukhona ukugqwala komoya omncane kanye nomhwamuko wamanzi obangelwa uphawu, i-PA66-1 # yokugqwala kwensimbi inhle kakhulu, isicwebezelisi sensimbi singcono, izingxenye ezimbalwa zinokugqwala, Ukugqwala kwensimbi kwe-PA66-2 # kuyingozi kakhulu, futhi ingaphezulu leshidi lensimbi lonakaliswe ngokuphelele. , kuyilapho ingaphezulu leshidi lethusi ligqwalile futhi lishintshe umbala ngokusobala. Lokhu kukhombisa ukuthi ukugqwala kwe-melamine resin embozwe inayiloni ebomvu ye-phosphorous flame retardant kungaphansi kwalokho kwe-phenolic resin embozwe inayiloni ebomvu ye-phosphorous flame retardant.
Sengiphetha, izinhlobo ezimbili zezinto ezithuthukisiwe ze-PA66 ezingavimbeli ilangabi zalungiswa ngokumboza i-phosphorus ebomvu nge-melamine resin kanye ne-phenolic resin. Izinhlobo ezimbili zezinto ezibambezela ilangabi zingafinyelela ku-1.6mmV-0, zingadlula izinga lokushisa lokuthungela elingu-775℃, kanti i-CTI ingafinyelela ngaphezu kuka-450V.
Amandla aqinile namandla aguquguqukayo e-PA66 athuthukiswe yi-melamine embozwe i-phosphorus ebomvu, kuyilapho impahla yomthelela ye-PA66 yayingcono nge-phosphorus ebomvu ehlanganiswe ne-phenolic. Ngaphezu kwalokho, iphunga le-phenolic resin egcotshwe nge-PA66 ebomvu ye-phosphorous flame retardant lalingaphansi kwalelo lezinto ezimbozwe nge-melamine, futhi izinga lokumunca amanzi laliphansi. I-melamine resin ehlanganiswe ne-phosphorous flame retardant ebomvu ithuthukisa ukubukeka kwe-PA66 ngokugqwala okuncane ezinsimbi.
Ireferensi: Tadisha mayelana nezakhiwo ezingabambezeli ilangabi ze-PA66 ezimbozwe nge-phosphorus ebomvu, izinto ze-inthanethi.
Isikhathi sokuthumela: 27-05-22