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# Technical Data Sheet 

# SPECFLEX* NM 8 15 Polyol 

# PAPI* 95 Isocyanate 

## Formulated Polyurethane Foam System Description SPECFLEX NM 8 15 is a fully formulated polyol used primarily for closed pour instrument panel applications. NM 8 15 is designed to be used in combination with PAPI 9 5 isocyanate to allow for the production of instrument panels and interior trim parts having an applied foam density range of 140 - 160 kg/m3. This semi - rigid foam system is excellent for automotive applications that require good adhesion, fast cure, very low vinyl staining, very low fogging, and good flowability in intricate molds. Typical demold times range from 60 to 90 seconds. 

### Typical Component Properties Unit SPECFLEX * NM 8 15 Polyol PAPI* 95 Isocyanate Method OH nu mber Mg KOH/g 44 - 49 ASTMD 4274 Water Content % 2.6

– 2.8 ASTM E 203-92a Color Dark Grey Brown Viscosity @ 25°C cPs 1300 - 1700 65 - 82 ASTM D 4878/ *D 4889 NCO Content % 31.4

– 32. 7 ASTM D 5155 Specific Gravity 1.0 3 1.23 ASTM D 891 1 

### Recommend ed Process Conditions Please consult the Material Safety Data Sheets for detailed information on product safety handling and emergency procedures
Units Values Poly : Iso Ratio (103- 107 Index) 1. 85

– 1.93 Machine Throughput g/s Depends on equipment & customer needs; commercially utilized at 200

– 500 g/s Components Temperature at Head °C 29

– 35 for NM 8 15 poly; 27

– 32 for PAPI 95 iso Mold Temperature °C 38 - 49 Demolding Time s 60 - 90 De-Gas Time s 5

– 20 s after end of Rise Time 1 Values are only recommendations. Customers have utilized this foam outside of these conditions without negative effect. Process setups are dependant on customer requirements, part design, mold seal -off condition, carrier functionality, equipment limitations, etc. 

### Typical Reaction Characteristics Hand mix d ata referred to laboratory tests made with components temperature at 2 5 °C, hand - mixed with mechanical stirrer at 2500 rpm. High pressure values will vary depending on processing condition s . Unit Hand mix High presure machine Method Cream Time s 10 5 Dow internal method Gel Time s 39 28 Dow internal method Rise Time s 58 42 Dow internal method Free Rise Density Kg/m 3 53 44 Dow internal method*Trademark of The Dow Chemical Compa ny

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### Viscosity Profiles 

## Viscosity profile: Viscosity profile: SPECFLEX* NM 815 blend PAPI* 95 Isocyanate T (F) T (C) Viscosity (cP) T (F) T (C) Viscosity (cP) 72 22.2 1846 75 23.9 73 80 26.7 1371 80 26.7 64 85 29.4 1200 85 29.4 56 90 32.2 994 90 32.2 49 95 35.0 875 95 35.0 43 100 37.8 739 100 37.8 37

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### Polymer Properties Physical p roperty values vary with the core density of the test pad. The values reported below are the average properties of the foam at the core density also reported below. The properties will be different at the applied density but can be correlated to these results based on the density difference.
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### Results are from study # 34643 at Dow Chemical Midland, MI USA Automotive Flexible Foams Lab in February 2007

. Data provided as general information only

. Units Value Standard Deviation Method Core Density (fo r property tests) Kg/m3 94 7 ASTM D3574 A Tensile Strength kPa 3 71 48 ASTM D3574 E Tensile Strength (heat aged ) kPa 2 53 5 ASTM D3574 K Elongation at break % 67 3 ASTM D3574 E Tear Strength N/m 453 4 ASTM D3574 F CD Compression Set 50% % 29 5 ASTM D3574 D CD Compression Set 50% (humid aged) % 22 2 ASTM D3574 D, J2 Compression Force Deflection 50% (humid aged) %change 38 1 ASTM D3574 C, J2 

### Flammability Numerical flame spread or fire classification are not intended to reflect hazards presente d by this or any other material under actual fire conditions Standard Typical Values (3 ) FMVSS - 302 Pass (45 mm/min) 3 Numerical flam e spread or fire classification are only indicative, they are not sales specifications 

### Handling and Storage Drums of PAPI 9 5 MDI must be protected from moisture contamination. Exothermic generation of CO2 may cause dangerous pressure build - up if contamination occurs. Opened containers should be filled with -40 C dew point inert gas before closing (nitrogen or air may be used) . During drum unloading, the 3/4" vent may be equipped with a dry inert gas breather (maximum of 1 psig pressure) or a moisture free, calcium chloride-filled dryer tube placed in the air bleed opening. Shipping and storage temperatures for this product are 75° to 105°F (24° to 41°C). If shipping or storage temperature should fall below 65°F (18°C), some crystallization could result. Unless proper action is taken to re-form the original solution, subsequent dimerization will proceed quickly and will deteriorate the assay of the product. Unit SPECFLEX* NM 8 15 Polyol PAPI* 9 5 Isocyanate Storage temperature °C 15 - 4 0 24 - 41 4Shelf life / Storage stability Months 6 6 4Stored in the original sealed drums in a dry place at the recommended tempe rature*Trademark of The Dow Chemical Compa ny

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### Safety Considerations Material Safety Data Sheets (MSDS) are available from the Dow Chemical Company. M SDS is provided to help customers satisfy their own handling, safety and disposal needs, and those that may be required by locally applicable health and safety regulations. SDS sheets are updated regularly. Therefore, please request and review the most current SDS before handling or using any product. Copies of the SDS are available on request through your nearest Dow Sales office. NM 8 15 Polyol - Formulated polyols generally present no significant hazard in use when simple precautions are followed. However, before working with these systems, it is necessary to understand the hazards involved in handling all of the components and to establish a nd follow safe work procedures. PAPI 95 Isocyanate - PAPI polymeric MDI products are potentially hazardous materials and require care in handling. All persons who work with these materials must know and follow proper safe handling procedures. 

### Customer Notice Dow encourages its customers to review their applications of Dow products from the standpoint of human health and environmental quality. To help ensure that Dow products are not used in ways for which they were not intended or tested, Dow personnel are willing to assist in dealing with ecological and products safety consideration. Your Dow representative can arrange the proper contacts.

Contact information : For more information about PU Systems products, call The Dow Chemical Company : http:// www.dow.com/pusystems/index.htm NOTICE: The information and data contained herein do not constitute sales specifications. The product properties may be changed without notice. No liability, warranty or guarantee of product performance is created by this document. It is the Buyer’s responsibility to determine whether Dow products are appropriate for Buyer’s use and to ensure that Buyer’s workplace and disposal practices are in compliance with applicable laws and regulations. No freedom from any patents or other industrial or intellectual property rights is granted or to be inferred. Quality Management System certified by DQS against DIN ENISO9001 Reg. No.055759 QM