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AT400 Rubber Torque Rheometer

AT400 Torque Rheometer is a measuring system for studying the flow, plasticizing, heat and shear stability of polymers. This system consists of a platform and some function units, such as the mixer and single-screw or twin-screw extruder. The platform connected with a function unit can measure flow and compounding behaviors, critical processing parameters of temperature, pressure, torque and viscosity of polymers in the laboratory-requiring only small sample volume. Designed to an excellent system with high measuring precision, handling flexibility and testing reproducibility, this instrument has been widely applicable in science research, quality control and process experiment. The whole system is as follows

  • AT400

  • Anytester

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Product Description

AT400 Torque Rheometer is a measuring system for studying the flow, plasticizing, heat and shear stability of polymers. This system consists of a platform and some function units, such as the mixer and single-screw or twin-screw extruder. The platform connected with a function unit can measure flow and compounding behaviors, critical processing parameters of temperature, pressure, torque and viscosity of polymers in the laboratory-requiring only small sample volume. Designed to an excellent system with high measuring precision, handling flexibility and testing reproducibility, this instrument has been widely applicable in science research, quality control and process experiment. The whole system is as follows:

01

Details

1. Platform

The platform, linked with an external PC through industrial bus, provide all functionality for driving and controlling the function units and data record. It has mechanical and electrical interface matching with the mixer or extruder. We have two kinds of structures to match the function units with the platform. One is a simplified structure and another is a unit movable structure that makes the function unit on a handcart to exchange it more easily. You can select an assembly to carry out testing tasks. The platform and its technical parameters as Fig.1 and Tab.1.

Tab.1 Parameters of the platform

Parameters

Motor

Panasonic Servo Motor & Driver, 3.0kw

Speed range

0.1~200rpm

Speed accuracy

0.05%F.S.

Torque

0~300Nm

Torque accuracy

0.1%F.S.

Melt pressure range

0.1~100MPa

Melt pressure accuracy

0.5%F.S.

Temperature range

0~350℃

Temperature accuracy

±1℃

Temperature channel

5 (4 channels for controlling temperature)

Power supply

3phase, AC380V, 50Hz, 30A

2. Mixer

The mixer is applicable for testing of thermoplastics, thermosets, elastomers and other similar materials under the influence of temperature and shear. Some important information, such as fusion time, heat & shear stability of PVC, melt viscosity and cross linking property of polymers, can be obtained by this unit. It is equipped with 3-pieces composed electrical heating chambers and two exchangeable rotors. The chambers and rotors are made of 1Cr18Ni9Ti and 3Cr13 stainless steel respectively, and the rotors axle seal are made of Cu-C alloy to ensure perfect sealing. The Mixer, rotors and its parameters are shown as Fig.2 and Tab.2.

02

Tab.2 Parameters of the Mixer

Parameters

Capacity

60ml

200ml

300ml

Material

304

Max. temperature

350℃

Max. torque

150Nm

250Nm

250Nm

Rotors

Roller (Banbury, Cam or Delta optional)

Speed ratio of rotors

3:2

Heating zone

3 channels

Heating mode

Electirc heating with imported heating tube

Total heating power

1800w

3600w

4800w

 *1 Mixer working under 450℃ is also available

 *2 Mixer with 18ml, 90,ml, 300ml are also available


3. Single Screw Plastic Extruder and Dies

The extruder connected with a die is used for testing of rheological characteristics and process ability of thermoplastics especially polyolefins, for producing test samples in the laboratory. There are 5 types of dies can be attached to the extruder. They are Rod capillary, Flat film, Rod, Pipe and Coated wire. These dies create Profiles of a defined geometry. Temperatures and melt pressure measurements along the extruder barrel and die enable the accurate definition of melt condition. A appropriate processing condition can be selected during the extrusion. Particularly, a powerful extrusion capillary rheometer can be constructed by using the extruder together with capillary dies. Rheological data, such as shear rate, shear stress and viscosity can be evaluated with Rabinowitsch and Bagley corrections. The screw, barrel and dies are made of 38CrMoAlA and 3Cr13 alloy steel. The extruder and dies and their parameters are shown as Fig.3 and Tab.3.

03

Fig.3 Extruder with Unit Movable Structure 


Tab.3 Parameters of Extruder and Dies

Parameters

L:D

25:1 or 28:1 or 30:1

Screw diameter

20

Compression ratio

2.1:1 for pellets,2.4:1 for powder

Max. temperature

350℃

Heating power

Total 4200W

Heating channel

5

Temperature measuring channel

1

Dies

Rod capillary

Dia.: Ф1.0, Ф1.27, Ф2.0

L:D: 20:1, 30:1, 40:1

Pipe

Inner dia.: Ф10, external dia.: Ф12.5

Rod

Ф5

Coated wire

Core: Ф1.5, die: Ф4.0

Flat film

50×1.8 (L×W)

4. Single Screw Rubber Extruder and Dies


The extruder connected with a die is used for testing of rheological characteristics and process ability of rubbers, for producing test samples in the laboratory. The extruder and dies and their parameters are shown as Fig.4 and Tab.4.

图片1

Fig.4 Extruder with Unit Movable Structur


Tab.4 Parameters of Extruder and Dies

Parameters

L:D

12

Screw diameter

30

Compression ratio

3:1

Max. temperature

350~400℃

Heating power

800w/channel

Heating channel

3

Temperature measuring channel

1

Cooling mode

Compressed air cooling

Dies

Gaver or cylinder

5. Conical Twin Screw Extruder and Dies


Intermeshing conical twin screw extruder connected with the platform can be used to simulate the production process of conical twin screw extruder. It adopts unique structure design, easy and fast to clean after experiment of corrosive material. The extruder is especially suitable for the processing pf PVC power, connected with different dies, can directly extrude sheet, pipe, profiles, etc. The extruder and dies and their parameters are shown as Fig.5 and Tab.5

图片2


Fig.5 Extruder with Unit Movable Structure

Tab.5 Parameters of Extruder and Dies

Parameters

Srew diameter

20~39mm

Effective length of screw

325mm

Barrel length

340mm

Max. temperature

350~400℃

Heating power

800w/channel

Heating channel

3

Temperature mesuring channel

1

Cooling mode

Compressed air cooling

Dies

Flat film

L×W: 60×1.5

Pipe

Inner dia.: Ф10, external dia.: Ф12.5


6. Parallel Twin Screw Extruder and Dies


Parallel twin screw extruder is maily used for filling, blending, modification and enhancement of rubber, plastic and engineering resin, and also for devolatilization of super absorbent resin. The extruder can also be used for extruding biodegradable masterbatch, polyamide polycondensation and polyurethane polymerization, and producing pelleting of carbon powder & magnetic powder, cable insulation material, sheath material, PVC cable and various silane crosslinking materials. The extruder and dies and their parameters are shown as Fig.6 and Tab.6.

图片3

Fig.6 Extruder with Unit Movable Structure 


Tab.6 Parameters of Extruder and Dies

Parameters

Srew structure

Building block struture

L:D

40

Screw groove depth

3.5mm

Max. temperature

350~400℃

Heating mode

5 phase electric heating

Cooling mode

5 phase compressed air cooling

Feeding mode

Screw type

Rotation speed of screw

10~480rpm

Exhaust mode

Vacuum exhaust

Meterial type

Polyolefin, PA, PET, PBT

Dies

Pelleting

Ф3.0*2

Pipe

Inner dia.: Ф10, external dia.: Ф12.5

Flat film

L×W: 60×1.5

Coated wire

Core: Ф1.5, die: Ф4.0


7. Film Blowing Machine


Film blowing machine is suitable for film production on a small scale for lab use. The parameters are shown as Fig.7 and Tab.7.

图片4

Fig.7 Film Blowing Machine with Platform and Extruder


Tab.7 Parameters of Film Blowing Machine

Parameters

Pulling roller dia.

120mm

Winding roller dia.

120mm

Winding speed

0~140mm/s

Die dia.

24mm

Film blowing dia.

50~120mm

Winding width

78~190mm

Die gap

0.3~1.8mm

Dimensions

1050×700×1880mm


8. Software and data sheet


A set of software for the instrument is follows:

(1) Platform software.

(2) Mixer software.

(3) Extruder software.

(4) Viscosity software.

They run in the windows XP system.The interface of the platform software is shown as Fig 8. Some typical data sheets exporting from the software are shown as Fig.9, Fig.10, Fig.11 and Fig.12.


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