Elastollan 880AN

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Elastollan880AN

Polyester-based Grade

ElastollanÒ 880AN is specifically formulated for transparent film applications. It exhibits excellent abrasion resistance, toughness, transparency, and oil/fuel resistance. It has excellent damping characteristics and outstanding resistance to tear propagation. ElastollanÒ 880AN is supplied uncolored in pellet form.
 
Typical Properties of ElastollanÒ ASTM Test Method Units Typical Values
All the physical properties reported here are measured on injection molded samples. Properties of sheet
or film samples of this product are also available upon request.
Specific Gravity ASTM D 792 g/cm3 1.20
Shore Hardness ASTM D 2240 Shore A or D 78A
Taber Abrasion ASTM D 1044 mg loss 40
DIN Abrasion DIN 53516 mm3 loss 10
E-Modulus ASTM D 412 psi 3600
Flexural Modulus ASTM D 790 psi 3200
Tensile Strength ASTM D 412 psi 4800
Tensile Stress at 100% Elongation ASTM D 412 psi 770
Tensile Stress at 300% Elongation ASTM D 412 psi 1840
Ultimate Elongation ASTM D 412 % 610
Tear Strength ASTM D 624, Die C lb/in 490
Compression Set 22h at 70ºC
22h at 23 ºC		  
ASTM D 395 “B”		 % of original deflection  
50
20
Glass  Transition temperature* BASF Analytical Method oC -27
Vicat Softening Temperature ASTM D 1525 oC 64
DMA Softening Temperature BASF Analytical Method oC 66
 
*Measured with Dynamic Mechanical Analysis (DMA). DMA profile is available upon request. Above values are shown as typical values and should not be used as specifications.

Elastollan880AN

Polyester-based Grade

MELT FLOW INDEX (MFI): The following table shows the  MFI information of ElastollanÒ 890AN. “ASTM D 1238, B” MFI test method is used for generation of data.
 
ElastollanÒ Name MFI Conditions MFI, g/10min
880A-13N 190 oC, 3.8 kg 15-25
  190 oC, 8.7 kg 40-60
 
DRYING: ElastollanÒ materials are hydroscopic, i.e. dry ElastollanÒ will rapidly absorb moisture when exposed to atmosphere. Polyether-based ElastollanÒ grades absorb moisture more rapidly than polyester-based ElastollanÒ grades. As with all TPU products, ElastollanÒ 890AN must be dried before processing. The drying step is required to maintain a low moisture content until the product enters the processing equipment. The water content must be less than 0.03% before and during processing.


ElastollanÒ Hardness Drying Time Drying Temperature
  Circulating air Dehumidified Air
78A to 90A 2 to 3 h 100 to 110 ºC 80 to 90 ºC
> 90A 2 to 3 h 110 to 120 ºC 90 to 120 ºC

STORAGE: ElastollanÒ 880AN can be stored for up to one year in its original container. Containers should be stored in a cool and dry area. Containers should be tightly closed after use. Granulates should be exposed to the surrounding air only for as long as absolutely essential; it is therefore important to cover the feed hopper of the processing machine. Drying is recommended if the container has been opened several times. In order to prevent condensation, materials stored in cool conditions should be brought to room temperature before opening the container.



PROCESSING RECOMENDATIONS: Single screw extruder with a compression ratio of 1:2 to 1:3, preferably 1: 2.5, are recommended for processing ElastollanÒ. BASF experience shows that three section screws with an L/D ratio of 25 to 30 are most suitable. Three section screws should have continued constant pitch of 1D. The radial clearance between screw and barrel should be 0.1 to 0.2 mm. For processing ElastollanÒ, multizone screws, e.g. barrier screws, have also proven suitable. Short screws with high compression ratio are unsuitable for ElastollanÒ. Use of breaker plates and screen packs is recommended. Depending on the screw diameter and type of die, breaker plates should have holes of 1.5 to 5 mm in diameter. Since thermoplastic polyurethanes are shear sensitive, excessively high screw speeds may lead to reduction in product properties.


TYPICAL PROCESSING CONDITIONS:  ElastollanÒ  880AN  can  be used for injection molding or extrusion conditions. Typical processing conditions are listed in the table below. We recommend you to call our technical service helpdesk for more information or troubleshooting.
 
INJECTION MOLDING
Recommended barrel temperatures in ºC
ElastollanÒ Hardness Barrel Temperature Nozzle
60A- 80A 170-210 200-210
85A- 95A 190-220 210-225
98A-74D 210-230 220-240
 
EXTRUSION
Recommended barrel temperatures in ºC
ElastollanÒ
Hardness		 Cylinder Adapter Die Head Nozzle
60A to 70A 140-175 160-175 165-170 160-165
75A to 85A 160-200 175-200 175-205 170-205
90A to 98A 170-210 200-220 195-215 190-210
 
VISCOSITY CURVE:



SHRINKAGE: This graph can be used for estimated shrinkage values of ElastollanÒ products in relation to the wall thickness. Please remember that depending on the molding conditions and part design these values can change. We recommend you to call technical service group  for further information.



CHALLENGE US: Please contact us for more information on ElastollanÒ products.
 
You can reach our technical team at 1-800-892-3111 or tpu_helpdesk@basf.com. You can find more information at www.basf.com/elastollan. Our mailing address is BASF Corporation, 1609 Biddle Avenue, Wyandotte, Michigan 48192
 
For Further information, the following detailed brochures are available upon request:
 
• ElastollanÒ  Material Properties
• ElastollanÒ  Product Range
• ElastollanÒ Processing Recommendations
• ElastollanÒ Electrical Properties
• ElastollanÒ Chemical Resistance
DISPOSAL: ElastollanÒ materials are fully reacted and  present  no hazard to the environment. Waste can therefore be disposed at public waste disposal sites. The official regulations on waste disposal should be observed. For further information, please see BASF material safety data sheets.
 
CAUTION: Contact with product dusts from regrinding operations may cause temporary irritation of the eyes and the respiratory tract. Use with local exhaust. Under hot melt processing conditions (170-230°C), wear personal protective equipment to prevent thermal burns.
 
FIRST AID: Eyes-Flush eyes with flowing water at least 15 minutes. If irritation develops, consult a physician. Skin-Skin contact with hot melt may cause thermal burns. Call a physician immediately. Inhalation-If vapors generated from the hot melt process are inhaled, move to fresh air. Aid in breathing. If breathing difficulties develop, see a physician immediately.
In case of fire: Use water fog, foam, CO2, or dry chemical extinguishing media. Firefighters should be equipped with self-contained breathing apparatus and turnout gear.