XNR-400C Melt Flow Rate Tester

Test zinthu: ntchito kudziwa kusungunula otaya mlingo wa polyethylene, polypropylene, polyoxymethylene, ABS utomoni, polycarbonate, nayiloni fluoroplastics ndi ma polima ena pa kutentha kwambiri.

XNR-400C melt flow rate tester ndi chida choyezera kuchuluka kwa ma polima apulasitiki pa kutentha kwakukulu molingana ndi njira yoyesera ya GB3682-2018. Amagwiritsidwa ntchito pa polyethylene, polypropylene, polyoxymethylene, ABS resin, polycarbonate, ndi nayiloni fluorine. Muyeso wa kusungunula otaya mlingo wa ma polima monga mapulasitiki pa kutentha kwambiri. Ndizoyenera kupanga ndi kufufuza m'mafakitale, mabizinesi ndi magawo ofufuza asayansi.

Zofunika Kwambiri:
1. Gawo la Extrusion:
Diameter of the discharge port: Φ2.095±0.005 mm
Kutalika kwa doko lotulutsa: 8.000± 0.005 mm
Diameter of charger silinda: Φ9.550±0.005 mm
Utali wa mbiya yolipiritsa: 160±0.1 mm
pisitoni ndodo mutu awiri: 9.475±0.005 mm
Piston ndodo mutu kutalika: 6.350±0.100mm
2. Mphamvu yoyesera yokhazikika (mlingo wachisanu ndi chitatu)
Mlingo 1: 0.325 kg = (ndodo ya pisitoni + thireyi yolemera + manja otsekereza kutentha + 1 kulemera kwa thupi) = 3.187N
Msinkhu 2: 1.200 kg=(0.325+0.875 kulemera No. 2)=11.77 N
Mzere 3: 2.160 kg = (0.325 + No. 3 1.835 kulemera) = 21.18 N
mlingo 4: 3.800 kg=(0.325+No. 4 3.475 kulemera)=37.26 N
Mzere 5: 5.000 kg = (0.325 + No. 5 4.675 kulemera) = 49.03 N
Mlingo 6: 10.000 kg=(0.325+No. 5 4.675 kulemera + No. 6 5.000 kulemera)=98.07 N
mlingo 7: 12.000 kg=(0.325+No. 5 4.675 kulemera+No. 6 5.000+No. 7 2.500 kulemera)=122.58 N
Mlingo wa 8: 21.600 kg = (0.325 + 0.875 kulemera kwa No. 2 + 1.835 kulemera kwa No.4 + 3.475 + No.5 4.675 + No.6 5.000 + No.7 2.500 + No.8 2.915 kulemera) = 211.82 kulemera kwa N. cholakwika wachibale ≤ 0.5%.
3. Kutentha osiyanasiyana: 50-300 ℃
4. Kutentha kwanthawi zonse: ± 0.5 ℃.
5. Mphamvu yamagetsi: 220V±10% 50Hz
6. Malo ogwirira ntchito: kutentha kozungulira ndi 10 ℃-40 ℃; chinyezi wachibale wa chilengedwe ndi 30% -80%; palibe zowononga pozungulira, palibe mpweya wamphamvu; palibe kugwedezeka mozungulira, palibe kusokoneza kwamphamvu kwa maginito.

Kapangidwe ndi mfundo zogwirira ntchito:
The melt flow rate mita ndi extruded pulasitiki mita. Amagwiritsa ntchito ng'anjo yotentha kwambiri kuti chinthu choyezeracho chifike pamalo osungunuka pansi pa kutentha komwe kwatchulidwa. The mayeso chinthu mu chikhalidwe chosungunuka ichi ndi pansi pa mayeso extrusion kudzera dzenje laling'ono la m'mimba mwake pansi pa katundu yokoka ya kulemera analamula. Popanga pulasitiki yamabizinesi akumafakitale komanso kafukufuku wamayunitsi ofufuza asayansi, "kusungunuka (misala) kuthamanga" nthawi zambiri kumagwiritsidwa ntchito kuwonetsa mawonekedwe akuthupi a zinthu za polima mumkhalidwe wosungunuka monga fluidity ndi mamasukidwe akayendedwe. Zomwe zimatchedwa kusungunula index zimatanthawuza kulemera kwapakati pa gawo lililonse la extrudate lotembenuzidwa kukhala voliyumu ya extrusion ya mphindi 10.
Melt (misa) yothamanga mita imawonetsedwa ndi MFR, gawo ndi: magalamu/mphindi 10 (g/mphindi), ndipo chilinganizocho chikufotokozedwa ndi: MFR (θ, mnom )=tref .m/t
Mu chilinganizo: θ—— kuyesa kutentha
mmmm- mwadzina katundu Kg
m -- pafupifupi kulemera kwa odulidwa g
tref —— nthawi yofotokozera (10min), S (600s)
T -- kudula nthawi yapakati s
Chitsanzo: Zitsanzo za pulasitiki zimadulidwa masekondi 30 aliwonse, ndipo zotsatira zazikulu za gawo lililonse ndi: 0.0816 g, 0.0862 g, 0.0815 g, 0.0895 g, ndi 0.0825 g.
Avereji m = (0.0816+0.0862+0.0815+0.0895+0.0825)÷5=0.0843(g)
Lowetsani mu fomula: MFR=600×0.0843/30=1.686 (g/10 mphindi)
Chida ichi chimapangidwa ndi ng'anjo yowotchera komanso njira yoyendetsera kutentha ndipo imayikidwa pansi pa thupi (gawo).
Gawo lowongolera kutentha limagwiritsa ntchito mphamvu ya single-chip microcomputer ndi njira yowongolera kutentha, yomwe ili ndi mphamvu zotsutsana ndi kusokoneza, kuwongolera kutentha kwambiri, komanso kuwongolera kokhazikika. Waya wotenthetsera mu ng'anjoyo amavulazidwa pa ndodo yowotchera molingana ndi lamulo linalake kuti achepetse kutentha kuti akwaniritse zofunikira.