ASTM D3364 100~450℃ Melt Flow Index Tester MFR MVR Thermoplastics
Function
The melt mass-flow rate (MFR) and the melt volume-flow rate (MVR)
are determined by extruding molten
material from the barrel of a plastometer under preset conditions
of temperature and load. For melt mass-flow rate, timed segments of
the extrudate are weighed and the extrudate rate is calculated in
g/10 min and
recorded. For melt volume-flow rate, the distance that the piston
moves in a specified time or the time required for the piston to
move a specified distance is measured to generate data in cm3/10
min. Melt volume-flow rate may be converted to melt mass-flow rate,
or vice-versa, if the density of the material is known under the
conditions of the test.
Standards
ISO1133, ASTM D1238, ASTM D3364, BS2782, DIN53735, JIS K7210
ISO 1133 Vs. ASTM D1238
ISO and ASTM offer their standards for purchase at their respective
websites.
In the world of plastics, melt flow index measures the output rate
-- or flow -- that occurs in natural polymer or masterbatch over
the course of 10 minutes when a piston applies a fixed amount of
pressure at 190 degrees Celsius. Knowing the MFI helps
manufacturers asses the viscosity of a substance to better control
its processing. The International Organization for
Standardization's 1133 and the American Society for Testing and
Material's ASTM D1238 both serve as standards for measuring melt
flow index.
Similarities
ISO 1133 and ASTM D1238 have more similarities than differences.
Manufacturers consider these standards “technically equivalent,” as
both detail similar standards for using an extrusion plastometer,
which is commonly known as a melt indexer. Both standards present
tests that measure one point on the viscosity curve under
controlled conditions and both express MFI in units of grams per 10
minutes. Each standard specifies orifice length and diameter,
barrel temperature and piston load ratings.
Methods
While the ISO 1133 standard requires a five-minute preheat time,
ASTM D1238 requires a seven-minute preheat time. The ISO 1133
standard has a starting point of 50 mm and entails 30 mm of piston
travel whereas the ASTM D1238 method has a starting point of 46 mm
and entails between 6.35 and 25.4 mm of travel. Additionally, ISO
and ASTM standards propose a slight dimensional difference in the
piston foot of the melt indexer.
Features
ASTM D1238 offers a variation of the melt-flow test known as a
multi-weight melt flow test. This procedure -- which uses different
weights of materials -- offers multiple measurements on a single
charge, including measurements under varying load conditions. The
ISO 1133 standard does not detail this alternative method. The ASTM
standard also details recommended technical specifications for melt
indexers, while ISO 1133 lacks this feature.
Procedures A and B
ISO 1133 and ASTM D1238 both offer two MFI test methods, known as
Procedures A and B. Procedure A relies on a manual melt indexer
making cuts at timed intervals that are then weighed on an
analytical balance to determine MFI, while Procedure B features no
cutting or weighing. Instead, it determines MFI via measuring a
volume of extruded resin. Typically, Procedure B produces more
accurate measurements as it has less opportunities for user
interference. However, this procedure requires an accurate value
for the resin melt density at the test temperature, while Procedure
A does not require this knowledge.
Specifications
Model |
| YY166 |
Temperature range | ℃ | 100~450 |
Temperature accuracy | ℃ | ±0.5 |
Temperature variation in 4 hours | ℃ | ≤0.5 |
Temperature variation with distance at between 10 mm and 50 mm above the die surface | ℃ | ≤1 |
Temperature Resolution | ℃ | 0.1 |
Interval of temperature recovering after changing testing samples | minute | ≤4 |
Timing range | second | 0~6000 |
Resolution of timing | second | 0.1~1 |
Inner diameter of die | mm | Φ2.095±0.005 |
Inner diameter of filling canister | mm | Φ9.550±0.025 |
Weights accuracy |
| ≤±0.5% |
Standard weights | g | 875,960,1200,1640 |
Possible Combination of the Standard Weights | g | 325, 1200, 2160, 3800, 5000 |
Measurement range | g/10min | 0.1~100 |
Dimension | mm | 550×430×730 |
Power Supply |
| 220V±10%, AC, 50HZ, 3A |
Weight | kg | 65 |
Cut-off device |
| Automatic/Jog/Manual cut-off |
Standard Accessories
Remark | Quantity |
Main machine (with built-in control panel, micro-printer, cylinder
heater, cutting knife) | 1 set |
Piston Rod (with a stud, a piston guide) | 1 set |
Standard die of Φ2.095±0.005mm | 1 set |
T-Shape Weights tray | 1 set |
5000g load Weights of 875g, 960g, 1200g, 1640g | 1 set for each |
Die clean rod, cylinder Clean Rod, packing rod, filling funnel,
feeder, wooden handle knife, cut-off blade for spare use | 1 set for each |
Test Load
| Load (g) | Combination of dead weight (g) |
| 325 | T-shape weight tray and the weight of piston |
| 1200 | 325+875 |
| 2160 | 325+875+960 |
| 3800 | 325+875+960+1640 |
| 5000 | 325+875+960+1640+1200 |
| 10000 | 325+875+960+1640+1200+2500+2500 |
| 21600 | 325+875+960+1640+1200+1600+2500+2500+2500+2500+2500+2500 |
Company profile
DONGGUAN YUYANG INSTRUMENT CO.,LTD is Located in Wanjiang District
(Dongguan City, Guangdong Province,China),a famous historical town
with prosperous industry and convenient transportation. We are a
high-tech enterprise which is specialized in developing and
manufacturing Fire Testing Equipment, Building Material Fire
Tester, Wire and Cable Fire Tester, Environmental Test Chamber,
Textile Testing Equipment, Toys Testing Equipment and etc. Decades
of research and development strengthen the leading edge of YUYANG
in this field, and established as an crucial role in R&D on
high quality and high-cost performance of testing equipment.
YUYANG's testing equipment are widely used in various field:
scientific institutions, colleges, inspection institutions, auto
parts, electronics, electricals, lithium battery, LED,
photoelectricity, mobile, plastic and rubber, display,
telecommunication, chemical industry, aerospace, building material
and product, wire and cable, toys, furniture, textile and fabrix,
etc. All YUYANG testing equipment are designed according to
international test standards, such as ISO, ASTM, DIN, EN, GB, BS,
JIS, ANSI, UL, TAPPI, AATCC, IEC, VDE, CSA,CEN and so on. DONGGUAN
YUYANG INSTRUMENT CO.,LTD looks forward to cooperating with
customer all over the world. If you are interested in any of our
products or would like to discuss a custom order. Please feel free
to contact us. We are looking forward to forming succesful business
with new clients around the world in the near future.
FAQ:
1. who are we?
We are based in Guangdong, China, start from 2018,sell to Southeast
Asia(11.00%),Eastern Asia(10.00%),Southern Europe(10.00%),Domestic
Market(10.00%),Northern Europe(9.00%),South Asia(9.00%),North
America(7.00%),South America(7.00%),Western Europe(7.00%),Eastern
Europe(6.00%),Mid East(6.00%),Oceania(5.00%),Central
America(3.00%),Africa(0.00%). There are total about 11-50 people in
our office.
2.what can you buy from us?
Testing Equipment,Tensile Testing Machine,Environmental Test
Chamber,Fire Testing Equipment,Induction Heating Machine
3. why should you buy from us not from other suppliers?
We are a high-tech enterprise which is specialized in developing
and manufacturing Fire Testing Equipment, Building Material Fire
Tester, Wire and Cable Fire Tester, Environmental Test Chamber,
Textile Testing Equipment, Toys Testing Equipment and etc.
4. what services can we provide?
Accepted Delivery Terms:
FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express
Delivery,DAF,DES；
Accepted Payment Currency:USD,EUR,JPY,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,Credit Card,PayPal,Western
Union,Cash,Escrow;
Language Spoken:English,Chinese
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