XNR-400C Melt Flow Rate Tester

Izinto zovavanyo: Isetyenziselwa ukumisela inqanaba lokunyibilika kwe-polyethylene, i-polypropylene, i-polyoxymethylene, i-ABS resin, i-polycarbonate, i-nylon fluoroplastics kunye nezinye iipholima kumaqondo obushushu aphezulu.

I-XNR-400C i-melt flow rate tester sisixhobo sokulinganisa iipropathi zokuhamba kweepolima zeplastiki kumaqondo aphezulu okushisa ngokwendlela yokuvavanya ye-GB3682-2018. Isetyenziselwa i-polyethylene, i-polypropylene, i-polyoxymethylene, i-resin ye-ABS, i-polycarbonate, kunye ne-nylon fluorine. Umlinganiselo wesantya sokunyibilika kweepholima ezifana neeplastiki kumaqondo obushushu aphezulu. Ilungele imveliso kunye nophando kwiifektri, amashishini kunye neeyunithi zophando lwezenzululwazi.

Iimpawu eziphambili:
1. Inxalenye ye-Extrusion:
Ububanzi bezibuko lokukhupha: Φ2.095±0.005 mm
Ubude bezibuko lokukhupha: 8.000±0.005 mm
Ububanzi be-cylinder yokutshaja: Φ9.550±0.005 mm
Ubude bombhobho wokutshaja: 160±0.1 mm
Piston intonga intloko ububanzi: 9.475±0.005 mm
Piston intonga ubude intloko: 6.350±0.100mm
2. Amandla ovavanyo oluqhelekileyo (inqanaba lesibhozo)
Inqanaba 1: 0.325 kg = (intonga yepiston + itreyi yobunzima + umkhono wokugquma ubushushu + 1 umzimba wobunzima) = 3.187N
Inqanaba 2: 1.200 kg=(0.325+0.875 ubunzima No. 2)=11.77 N
Inqanaba 3: 2.160 kg = (0.325 + No. 3 1.835 ubunzima) = 21.18 N
Inqanaba 4: 3.800 kg=(0.325+No. 4 3.475 ubunzima)=37.26 N
Inqanaba 5: 5.000 kg = (0.325 + No. 5 4.675 ubunzima) = 49.03 N
Inqanaba 6: 10.000 kg = (0.325 + No. 5 4.675 ubunzima + No. 6 5.000 ubunzima) = 98.07 N
Inqanaba 7: 12.000 kg=(0.325+No. 5 4.675 ubunzima+No. 6 5.000+No. 7 2.500 ubunzima)=122.58 N
Inqanaba 8: 21.600 kg=(0.325+0.875 ubunzima No. 2+1.835 ubunzima No.4+3.475+No.5 4.675+No.6 5.000+No.7 2.500+No.8 2.915 ubunzima)=211.82 ubunzima impazamo ehambelanayo ≤ 0.5%.
3. Uluhlu lobushushu: 50-300℃
4. Ukuchaneka rhoqo kobushushu: ± 0.5℃.
5. Ukunikezelwa kwamandla: 220V±10% 50Hz
6. Iimeko zendawo yokusebenza: ubushushu be-ambient yi-10℃-40℃; ukufuma okunxulumene nokusingqongileyo yi-30%-80%; akukho ndawo ingcolisayo, akukho moya unamandla; akukho kungcangcazela ngeenxa zonke, akukho luphazamiseko lunamandla lwemagnethi.

Ubume kunye nomgaqo wokusebenza:
Imitha yomlinganiselo wokunyibilika yimitha yeplastiki ekhutshiweyo. Isebenzisa isithando somlilo esiphezulu sokushisa ukwenza into elinganisiweyo ifikelele kwisimo esityhidiweyo phantsi kwemeko yokushisa echaziweyo. Into yovavanyo kule meko etyhidiweyo iphantsi kovavanyo lwe-extrusion ngokusebenzisa umngxuma omncinci wobubanzi obuthile phantsi kobunzima bomthwalo wobunzima obumiselweyo. Kwimveliso yeplastiki yamashishini amashishini kunye nophando lweeyunithi zophando lwezenzululwazi, "isantya sokunyibilika (ubuninzi) sokuhamba" sihlala sisetyenziselwa ukuvakalisa iimpawu ezibonakalayo zezinto zepolymer kwimeko etyhidiweyo njenge-fluidity kunye ne-viscosity. Into ebizwa ngokuba yi-melt index ibhekisela kubunzima obuqhelekileyo becandelo ngalinye le-extrudate eliguqulelwe kumthamo we-extrusion wemizuzu eyi-10.
Imitha yesantya sokunyibilika (ubunzima) ibonakaliswa yi-MFR, iyunithi yile: iigram/10 imizuzu (g/min), kwaye ifomula ibonakaliswa ngu: MFR (θ, mnom )=tref .m/t
Kwifomula: θ—— uvavanyo lobushushu
mnum- umthwalo oqhelekileyo Kg
m —— ubunzima obuqhelekileyo bokusikwa g
tref —— ixesha lokubhekisela (10min), S (600s)
T —— ukunqunyulwa kwexesha lekhefu s
Umzekelo: Iseti yeesampulu zeplastiki zisikwa rhoqo kwimizuzwana engama-30, kwaye iziphumo zobunzima becandelo ngalinye zezi: 0.0816 g, 0.0862 g, 0.0815 g, 0.0895 g, kunye ne-0.0825 g.
Umyinge m = (0.0816+0.0862+0.0815+0.0895+0.0825)÷5=0.0843(g)
Faka endaweni yefomula: MFR=600×0.0843/30=1.686 (g/10 imizuzu)
Esi sixhobo siqulunqwe kwisithando somlilo kunye nenkqubo yokulawula ukushisa kwaye ifakwe kwisiseko somzimba (ikholomu).
Inxalenye yolawulo lobushushu ithatha i-single-chip microcomputer amandla kunye nendlela yokulawula ubushushu, enekhono elinamandla lokuchasana nokuphazamiseka, ukuchaneka kokulawula ubushushu obuphezulu, kunye nolawulo oluzinzileyo. Intambo yokufudumeza kwisithando somlilo inxeba kwintonga yokufudumala ngokomgaqo othile wokunciphisa i-gradient yeqondo lokushisa ukuhlangabezana neemfuno eziqhelekileyo.