Acrylonitrile-butadiene-styrene copolymer (ABS) yana da kyawawan kaddarorin lantarki, juriya mai sanyi, juriya na mai, kwanciyar hankali sinadarai, da kaddarorin tasiri, kuma ana amfani dashi sosai a fannonin lantarki, kayan aikin gida da sufuri.Koyaya, ma'aunin iskar oxygen na ABS shine kawai 18%, kuma yana iya ci gaba da ƙonewa bayan wuta, wanda ke iyakance samfuransa a yawancin fa'idodin aikace-aikacen.Don cimma ƙimar jinkirin harshen wuta na ABS zuwa UL94 V-0, adadin wutar da aka ƙara gabaɗaya babba ne.An rage kayan aikin injiniya na kayan aiki, kuma farashin ya fi girma.
Acrylonitrile-butadiene-styrene copolymer (ABS) yana da kyawawan kaddarorin lantarki, juriya mai sanyi, juriya na mai, kwanciyar hankali sinadarai, da kaddarorin tasiri, kuma ana amfani dashi sosai a fannonin lantarki, kayan aikin gida da sufuri.Koyaya, ma'aunin iskar oxygen na ABS shine kawai 18%, kuma yana iya ci gaba da ƙonewa bayan wuta, wanda ke iyakance samfuransa a yawancin fa'idodin aikace-aikacen.Don cimma ƙimar jinkirin harshen wuta na ABS zuwa UL94 V-0, adadin wutar da aka ƙara gabaɗaya babba ne.An rage kayan aikin injiniya na kayan aiki, kuma farashin ya fi girma.
Polytetrafluoroethylene (PTFE) yana da sakamako mai kyau na anti-faduwa kuma an yi amfani dashi sosai a cikin PC / ABS na harshen wuta da sauran kayan aiki, amma akwai 'yan rahotanni na bincike akan PTFE a cikin ABS na wuta.ABS na gama gari mai ɗaukar harshen wuta a cikin masana'antar, yayin gabatar da PTFE, ya tattauna tasirin PTFE akan aikin ABS mai ɗaukar wuta.
1. Bangaren gwaji
1.1.Babban albarkatun kasa
ABS, brominated triazine, antimony trioxide, PTFE, antioxidants, lubricants, da dai sauransu.
1.2.Babban kayan aiki
Twin-screw extruder: nau'in SHJ-35;Injin gyare-gyaren allura: nau'in T80;Na'urar gwaji ta duniya mai sarrafa kwamfuta: nau'in CM6104;nakasar thermal ma'aunin zafin jiki: 303;Mai nazarin thermogravimetric (TG): nau'in 209C.Mai gwada tasirin pendulum: Model ZBC-25B;Narke kwararar ruwa (MFR) kayan aiki: MPXRZ-40A;Mai gwada konewa a kwance da tsaye: Model HVR-2.
1.3.Samfurin shiri
Dry ABS a 80 ℃ na 3 zuwa 5 hours, sa'an nan Mix ABS, brominated triazine, antimony trioxide, PTFE, da sauran Additives uniformly, narke da gauraya ta tagwaye-dunƙule extruder for extrusion da granulation.Extrusion zafin jiki ne 215-225 ℃, dunƙule gudun ne 360 r / min;sai a busa shi a bushe a zafin jiki na 80 ℃ na tsawon awanni 2, sannan a yi masa allura a cikin mizanin samfurin, zazzabin allurar yana 200 ~ 210 ℃.
1.4.Gwajin aiki
Ayyukan konewa: an gwada su bisa ga UL94;tensile yi: gwada bisa ga GB/T 1040-1992;Ƙarfin lanƙwasawa: an gwada bisa ga GB/T 9341-2000;Ƙarfin tasiri na ƙimar cantilever: gwada bisa ga GB/T 1843-1996;MFR: bisa ga GB/T 3682-== 2000 gwajin, zazzabi 220 ℃, lodi 220kg;zafin jiki karkatar da zafi: gwaji bisa ga GB/T 16341-2004;TG bincike: yawan dumama 10. C/min,.Yanayin zafin jiki shine 30 ~ 700 ℃, ƙarƙashin yanayin nitrogen.
2. Sakamako da tattaunawa
2.1.Samfurin ba tare da jinkirin harshen wuta yana ƙonewa gaba ɗaya bayan kunnawa na farko, kuma tasirin wutar ba shi da kyau.Lokacin da aka ƙara wasu adadin brominated triazine da antimony trioxide flame retardant, tabbas za a inganta tasirin wutar lantarki, kuma matakin jinkirin harshen ya kai matakin UL94V-2, amma lokacin ƙonewa ya fi tsayi, kuma tasirin wutar har yanzu bai ƙare ba. manufa.Ƙarin PTFE yana rage girman lokacin ƙona kayan.Lokacin da aka ƙara 0.2% PTFE, an ƙara matakin jinkirin harshen wuta daga V-2 zuwa V-0.Wannan shi ne saboda PTFE yana da babban wurin narkewa (323 ° C), kuma ba ya narke a zafin jiki na kayan aiki, amma yana da sauƙi don samar da fibrillate don samar da hanyar sadarwa ta fiber a ƙarƙashin ƙarfin haɗakarwa, wanda ke rage yaduwar harshen wuta.
2.2.Bayan ƙara mai kunna wuta, ƙarfin tasirin abin da aka sani yana raguwa sosai, yayin da sauran kaddarorin injina ke canzawa kaɗan.Sabanin haka, lokacin da aka ƙara masu ɗaukar wuta da PTFE a lokaci guda, ƙarfin kayan yana ɗan haɓaka kaɗan idan aka kwatanta da yin amfani da wutar lantarki kawai, kuma yayin da adadin PTFE ya ƙaru, ƙarfin tasirin abin da aka sani yana ƙaruwa. wanda zai iya zama Tsarin hanyar sadarwa na fiber da PTFE ya kafa a cikin kayan yana taka rawar ƙarfafawa zuwa wani matsayi.
2.3.Yayin da adadin PTFE ya karu, MFR na kayan yana raguwa a hankali.Lokacin da adadin PTFE da aka ƙara shine 0.3%, MFR na mai ɗaukar wuta ABS yana raguwa daga 23.1g / 10min zuwa 14.5g / 10min, yana nuna tasirin PTFE akan kaddarorin kwarara na kayan.Mafi girma shine saboda kasancewar PTFE fiber-forming abu, wanda ke hana kwararar kwayoyin ABS.Saboda tsari na musamman da PTFE ya kafa a lokacin sarrafawa, sassan kayan suna bayyana suna kumbura a fitowar kayan kayan, wanda ya haifar da ƙananan kayan abu da kuma raguwa a hankali.Fitar da kayan ba tare da PTFE ya fi al'ada ba.
2.4.TG da DTG bincike na kayan
Akwai kololuwa ɗaya kawai na asarar nauyi na thermal a cikin aiwatar da asarar nauyi mai zafi na ABS mai tsafta, kuma kololuwa biyu na asarar nauyi na thermal suna bayyana a cikin aiwatar da asarar nauyi mai zafi na ABS.Kololuwar farko tana faruwa ne sakamakon rugujewar wutar da ke hana wuta, kuma kololuwar na biyu na faruwa ne sakamakon rugujewar ABS.Tare da ƙari na PTFE, mafi girman zafin hasara na thermal (427 ° C) na ABS shine 1.8 ° C mafi girma fiye da na ABS mai tsafta (428.8 ° C), amma ƙimar hasarar ƙimar zafi mai girma (yawan asarar zafi mai yawa) 11.7% / min) shine kawai Matsakaicin ƙimar asarar nauyi na thermal mai tsafta na ABS (18.8% / min) shine 62.2%, wanda shine 7.9% ƙasa da ƙimar asarar nauyi mai zafi (12.7% / min) na samfurin 28 ba tare da PTFE ya kara.Bugu da ƙari na PTFE na iya inganta aikin jinkirin harshen wuta na kayan aiki.
Bromotriazine da antimony trioxide sune na yau da kullun halogen-antimony flame retardants, wanda ba wai kawai yana canza yanayin yanayin wuta ba amma kuma yana canza yanayin lalatawar yanayin lokacin da aka kulle.Ragowar adadin carbon na ABS mai tsafta a 700 ℃ shine 1.2%, kuma an ƙara ABS mai ɗaukar wuta tare da brominated triazine da antimony trioxide.Ragowar ƙimar carbon a 700 ℃ shine 3.5%.Samuwar Layer carbon kuma yana taimakawa wajen haɓaka juriya na abu.Rashin wuta.A lokaci guda, ragowar ƙwayar carbon a 700 ° C tare da PTFE da aka ƙara shine 3.6%, yana nuna cewa PTFE ta kasa inganta haɓakar carbon.Bugu da ƙari na PTFE na iya inganta tsarin Layer na carbon mai yawa da mafi kyawun rufi da shingen oxygen, don haka An yi amfani da shi tare da halogen-antimony flame retardant, tasirin wutar lantarki ya fi kyau.
3. Kammalawa
3.1.Bugu da ƙari na PTFE na iya ƙara rage yawan asarar hasara na zafi mai zafi na ABS na harshen wuta, da rage yawan lokacin konewa na kayan, da kuma inganta darajar kayan wuta.
3.2.Bugu da ƙari na PTFE yana da ɗan tasiri a kan kayan aikin injiniya na ABS na harshen wuta, kuma zuwa wani matsayi yana inganta ƙarfin kayan.
3.3.PTFE yana da tasiri mai mahimmanci akan aikin sarrafa kayan wuta na ABS, kuma ya kamata a daidaita sashi bisa ga bukatun yayin amfani.
Lokacin aikawa: Juni-11-2020