Item specifics
| Condition: | New | Color: | Silver |
| Custom Bundle: | No | Non-Domestic Product: | No |
| MPN: | Does Not Apply | Modified Item: | No |
| Brand: | Unbranded/Generic | UPC: | Does not apply |
Specifications
(1) Extrusion section :
Die diameter :Φ2.095±0.005mm
Die length : 8.000±0.025mm
Inner diamenter of cylinder : Φ9.550±0.025mm
Cylinder length : 152±0.1mm
Diameter of land of piston : Φ9.475±0.015mm
Length of land of piston : 6.350±0.100mm
(2) Test load
It contains a set of weight and a piston composed of amount of weights with altogether eight grades .
1st grade : 0.325kg(guide rod +weight tray+ heat isolation sheath+ weight #1) =3.187N
2nd grade:1.200kg(0.325kg+2#0.875kg weight )=11.77N
3rd grade：2.160kg=(0.325kg+3#1.835kg weight)=21.18N
4th grade：3.800kg=(0.325kg+4#3.475kg weight)=37.26N
5th grade：5.000kg=(0.325kg+5#4.675kg weight)=49.03N
6th geade：10.000kg=(0.325kg+5#4.675kg weight+6#5.000kg weight)=98.07N
7th grade：12.500kg=(0.325kg+5#4.675kg weight+6#5.000kg weight+7#2.500kg weight)=122.58N
8th grade：21.600 kg=(0.325kg+2#0.875kg weight+3#1.835kg weight+4#3.475kg weight+5#4.675kg weight+6#5.000kg weight+7#2.500kgweight+8#2.915kg weight)=211.82N
(3) Temperature range :ambient temperature ~400℃
(4) Temperature control accuracy : ±0.5℃
(5) Dimension :290(L) ×410(W) ×630(D)mm
2. Working conditions
(1) Indore temperature: 10℃—35℃ without vibration and corrosive media in ambient.
(2) It should be installed and adjusted to be level on stable foundation.
(3) There should be no strong magnetic field disturbance and air convection when it runs.
(4) Power voltage: AC110V, frequency 50Hz .The wave range of the power voltage shall not exceed ±10% of the rated voltage.
Ⅲ.Theory and Structure
1．Theory
Melt Flow Rate Instrument is a kind of plastic extruder .It can make the sample melt through high temperature oven in stated temperature conditions. The melt sample can be extruded from a die under stated load from the weights .Melt Flow Rate is the mass that the melt sample of the thermoplastics passes through standard die every 10min under definite temperature and pressure .
The Melt Mass Flow Rate (MFR) is expressed by g/10min .The equation is as following :
MFR（θ，Mnom）=tref ×M/t
Where :
θ—test temperature ，℃
Mnom—test load ，kg
tref—reference time（10min），S(600s）
M—the average mass of the cut sample strips，g
t—sampling time interval ，s
For example :a tested material ,the sample sections are cut every 30S,the mass is 0.0816g,0.0862g,0.0815g,0.0895g and 0.0825g respectively .The average mass of the sample is :
M=(0.0816+0.0862+0.0815+0.0895+0.0825)/5=0.0843(g),
So MFR=600×0.0843/30=1.686(g/10min)
