XNR-400C Melt Flow Rate Testster

Nā mea ho'āʻo: Hoʻohana ʻia e hoʻoholo i ka kahe kahe o ka polyethylene, polypropylene, polyoxymethylene, ABS resin, polycarbonate, nylon fluoroplastics a me nā polymers ʻē aʻe i nā wela kiʻekiʻe.

ʻO ka XNR-400C melt flow rate tester he mea hana ia no ke ana ʻana i nā waiwai kahe o nā polymers plastic i nā wela kiʻekiʻe e like me ke ʻano hoʻāʻo o GB3682-2018. Hoʻohana ʻia ia no ka polyethylene, polypropylene, polyoxymethylene, ABS resin, polycarbonate, a me ka nylon fluorine. ʻO ke ana o ka kahe kahe o nā polymers e like me nā plastics i nā wela kiʻekiʻe. He kūpono ia no ka hana ʻana a me ka noiʻi ʻana i nā hale hana, nā ʻoihana a me nā ʻāpana noiʻi ʻepekema.

Nā mea nui:
1. ʻāpana Extrusion:
Ka anawaena o ka puka hoʻokuʻu: Φ2.095±0.005 mm
Ka lōʻihi o ka puka hoʻokuʻu: 8.000±0.005 mm
Ke anawaena o ka pahu hoʻouka: Φ9.550±0.005 mm
ʻO ka lōʻihi o ka pahu pahu: 160±0.1 mm
ʻO ke anawaena o ke poʻo piston: 9.475±0.005 mm
Piston lāʻau poʻo lōʻihi: 6.350±0.100mm
2. Ka ikaika ho'āʻo maʻamau (pae ʻewalu)
Papa 1: 0.325 kg = (koʻokoʻo piston + pā paona + lima pale wela + 1 kino kaumaha) = 3.187N
Papa 2: 1.200 kg=(0.325+0.875 paona No. 2)=11.77 N
Papa 3: 2.160 kg = (0.325 + No. 3 1.835 kaumaha) = 21.18 N
Papa 4: 3.800 kg=(0.325+No. 4 3.475 paona)=37.26 N
Papa 5: 5.000 kg = (0.325 + No. 5 4.675 paona) = 49.03 N
Papa 6: 10.000 kg=(0.325+No. 5 4.675 kaumaha + No. 6 5.000 kaumaha)=98.07 N
Papa 7: 12.000 kg=(0.325+No. 5 4.675 kaumaha+No. 6 5.000+No. 7 2.500 kaumaha)=122.58 N
Papa 8: 21.600 kg=(0.325+0.875 kaumaha o No. 2+1.835 kaumaha o No.4+3.475+No.5 4.675+No.6 5.000+No.7 2.500+No.8 2.915 kaumaha)=211.82 N. pili hewa ≤ 0.5%.
3. Ka wela wela: 50-300 ℃
4. Pono ka wela mau: ± 0.5 ℃.
5. Mana lako: 220V±10% 50Hz
6. Nā kūlana kaiapuni hana: ʻo 10 ℃-40 ℃ ka mahana ambient; ʻo ka haʻahaʻa haʻahaʻa o ke kaiapuni he 30% -80%; ʻaʻohe mea ʻino a puni, ʻaʻohe ea convection ikaika; ʻaʻohe haʻalulu a puni, ʻaʻohe hoʻopili magnetic ikaika.

Ke kumu a me ke kumu hana:
ʻO ka melt flow rate meter he mika plastic extruded. Hoʻohana ia i ka umu wela wela e hiki ai i ka mea i ana ʻia i kahi kūlana hoʻoheheʻe ma lalo o ke kūlana wela i ʻōlelo ʻia. Hāʻawi ʻia ka mea hoʻāʻo ma kēia moku hoʻoheheʻe ʻia i kahi hoʻokolohua extrusion ma o kahi puka liʻiliʻi o kekahi anawaena ma lalo o ka ʻumekaumaha o ke kaumaha i kuhikuhi ʻia. I ka hana ʻana i ka plastik o nā ʻoihana ʻenehana a me ka noiʻi ʻana o nā ʻāpana noiʻi ʻepekema, hoʻohana pinepine ʻia ka "melt (mass) flow rate" e hōʻike i nā waiwai kino o nā mea polymer i loko o ka moku i hoʻoheheʻe ʻia e like me ka fluidity a me ka viscosity. ʻO ka mea i kapa ʻia ʻo melt index e pili ana i ke kaumaha awelika o kēlā me kēia ʻāpana o ka extrudate i hoʻololi ʻia i ka leo extrusion o 10 mau minuke.
Hōʻike ʻia ka mīkini kahe kahe (mass) e MFR, ʻo ka ʻāpana: grams/10 minuke (g/min), a ua hōʻike ʻia ke ʻano e: MFR (θ, mnom )=tref .m/t
Ma ke kumu: θ—— wela hoao
mnom— haawe helu Kg
m —— ka nuipa awelika o ke oki g
tref —— manawa kuhikuhi (10min), S (600s)
T —— oki i ka manawa s
Laʻana: Ua ʻoki ʻia kahi pūʻulu o nā laʻana plastik i kēlā me kēia 30 kekona, a ʻo nā hopena nui o kēlā me kēia ʻāpana: 0.0816 g, 0.0862 g, 0.0815 g, 0.0895 g, a me 0.0825 g.
M awelika = (0.0816+0.0862+0.0815+0.0895+0.0825)÷5=0.0843(g)
E hoʻokomo i loko o ke kumu: MFR=600×0.0843/30=1.686 (g/10 minuke)
Hoʻokumu ʻia kēia mea hana me kahi umu wela a me kahi ʻōnaehana hoʻomalu wela a hoʻokomo ʻia ma ke kumu o ke kino (column).
Hoʻohana ka ʻāpana hoʻomalu wela i ka mana microcomputer single-chip a me ke ʻano kaohi wela, nona ka mana anti-interference ikaika, kiʻekiʻe ka mālama ʻana i ka wela, a me ka mana paʻa. ʻO ka uea hoʻomehana i loko o ka umu ahi e ʻeha ʻia ma ke koʻokoʻo hoʻomehana e like me kekahi lula e hōʻemi i ka gradient mahana e hoʻokō i nā koi maʻamau.