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Makroblend® DP7645

(PC+PET) blend; impact modified; unreinforced

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About

Product Types

No data available

Material

Plastics
Heat resistant, Chemical resistant, Impact resistant

General Characterization

No data available

Storage Conditions

No data available

Sampling

No data available

Packaging Type

No data available

Technical Properties & Datasheets

Product description

(PC+PET) blend; impact modified; unreinforced

Applications

Injection molding

Typical Values

Rheological properties

Property Test Condition Value Unit Standard
Melt Volume-flow Rate (MVR) 260 °C/ 5 kg 12 cm³/10min ISO 1133-1
Molding Shrinkage, parallel / normal Value range based on general practical experience (600bar) 0.6 - 0.8 % b.o. ISO 2577
Göttfert Melt Viscosity 165 s^-1^/ 260 °C 600 Pa·s Bayer test

Mechanical properties (23 °C/50 % r. h.)

Property Test Condition Value Unit Standard
Tensile modulus 1 mm/min 2,100 MPa ISO 527-1,-2
Yield Stress 50 mm/min 50 MPa ISO 527-1,-2
Yield Strain 50 mm/min 4.5 % ISO 527-1,-2
Nominal Strain at Break 50 mm/min > 50 % ISO 527-1,-2
Stress at Break 50 mm/min 40 MPa ISO 527-1,-2
Flexural Modulus 2 mm/min 2,100 MPa ISO 178
Flexural Strength 2 mm/min 75 MPa ISO 178
Flexural Strain at Flexural Strength 2 mm/min 5.7 % ISO 178
Flexural Stress at 3.5 % Flexural Strain 2 mm/min 65 MPa ISO 178
Izod Notched Impact Strength 23 °C 50 kJ/m² ISO 180/A
Izod Notched Impact Strength -10 °C 45 kJ/m² ISO 180/A
Izod Notched Impact Strength -20 °C 23 kJ/m² ISO 180/A
Charpy Notched Impact Strength 23 °C 55 kJ/m² ISO 179/1eA
Ball Indentation Hardness 100 N/mm² ISO 2039-1

Thermal properties

Property Test Condition Value Unit Standard
Temperature of Deflection under Load 1.80 MPa 94 °C ISO 75-1,-2
Vicat Softening Temperature 50 N; 120 °C/h 133 °C ISO 306
Coefficient of Linear Thermal Expansion, parallel 23 to 55 °C 0.8 10⁻⁴/K ISO 11359-1,-2
Coefficient of Linear Thermal Expansion, normal 23 to 55 °C 0.8 10⁻⁴/K ISO 11359-1,-2
Burning Behaviour 0.8 mm HB UL 94
Burning Behaviour 1.6 mm HB UL 94
Burning Rate (US-FMVSS-302) >=1.0 mm PASSED ISO 3795
Oxygen Index Method A 20 % ISO 4589-2
Thermal Conductivity, through-plane 23 °C; 50 % r. h. 0.2 W/(m·K) ISO 8302

Electrical properties (23 °C/50 % r. h.)

Property Test Condition Value Unit Standard
Relative Permittivity 1 MHz 3.3 IEC 60250
Relative Permittivity 100 Hz 3.2 IEC 60250
Dielectric Dissipation Factor 1 MHz 144 10⁻⁴ IEC 60250
Dielectric Dissipation Factor 100 Hz 13 10⁻⁴ IEC 60250
Volume Resistivity > 1.00E+15 Ω·m IEC 60093
Volume Resistivity > 1.00E+15 Ω·m IEC 62631-3-1
Surface Resistivity > 1.00E+17 IEC 60093
Surface Resistivity > 1.00E+17 IEC 62631-3-2
Electric Strength 1 mm 33 kV/mm IEC 60243-1
Comparative Tracking Index (CTI) Solution A 175 IEC 60112

Other properties (23 °C)

Property Test Condition Value Unit Standard
Water Absorption (Saturation Value) Water at 23 °C 0.75 % ISO 62
Water Absorption (Equilibrium Value) 23 °C; 50 % r. h. 0.15 % ISO 62
Density 1,200 kg/m³ ISO 1183-1
Bulk Density 0.7 g/cm³ ISO 60

Processing conditions for test specimens

Property Test Condition Value Unit Standard
Injection Molding - Melt Temperature 270 °C ISO 294
Injection Molding - Mold Temperature 70 °C ISO 294
Injection Molding - Injection Velocity 200 mm/s ISO 294

Recommended processing and drying conditions

Property Test Condition Value Unit Standard
Standard Melt Temperature 270 °C
Barrel Temperatures Nozzle 260 - 270 °C
Barrel Temperatures Front 250 - 260 °C
Barrel Temperatures Middle 240 - 250 °C
Barrel Temperatures Rear 230 - 240 °C
Mold Temperatures 60 - 80 °C
Hold Pressure (% of Injection Pressure) 50 - 75 %
Plastic Back Pressure (specific) 50 - 100 bar
Peripheral Screw Speed 0.1 - 0.2 m/s
Shot-to-Cylinder Size 30 - 70 %
Dry Air Drying Temperature 110 °C
Dry Air Drying Time 2 - 4 h
Moisture Content max. (%) ≤ 0.01 %
Vent Depth 0.025 - 0.075 mm

Health and Safety Information

Before working with this product, you must read and become familiar with the available information on its risks, proper use, and handling. Information is available in several forms, e.g.,  in particular in the currently valid safety data sheets and product labels. For further information contact your Covestro representative.

The Product Safety First Program | Covestro

Please note that for products manufactured in different colors, safety data may vary depending on the color variant.

Disclaimer

General

The manner in which you use our products, technical assistance and information (whether verbal, written or by way of production evaluations), including any suggested formulations and recommendations, are beyond our control. Therefore, it is imperative that you test our products to determine suitability for your processing and intended uses. Your analysis must at least include testing to determine suitability from a technical, health, safety, and environmental and regulatory standpoint. Such testing has not necessarily been done by Covestro, and Covestro has not obtained any approvals or licenses for a particular use or application of the product.

Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale which are available upon request.

All information and including technical assistance is given without warranty or guarantee and is subject to change without notice. It is expressly understood and agreed by you that you assume and hereby expressly release indemnify us and hold us harmless from all liability, in tort, contract or otherwise, incurred in connection with the use of our products, technical assistance, and information. Any statement or recommendation not contained herein is unauthorized and shall not bind us. Nothing herein shall be construed as a recommendation to use any product in conflict with any claim of any patent relative to any material or its use. No license is implied or in fact granted under the claims of any patent.

Non Medical and non Food Contact

This product is not designated for the manufacture of a medical device or of intermediate products for medical devices (1). This product is also not designated for other specifically regulated applications (e.g. including cosmetics, plant protection, fertilisers, plant strengtheners, food processing, food contact and others). If the intended use of the product is for the manufacture of a medical device or of intermediate products for medical devices or for other specifically regulated applications Covestro must be contacted in advance to provide its agreement to sell such product for such purpose. Nonetheless, any determination as to whether a product is appropriate for use in a medical device or intermediate products for medical devices, for Food Contact products or cosmetic applications must be made solely by the purchaser of the product without relying upon any representations by Covestro.

1) Please see the Guidance on Use of Covestro Products in a Medical Application document.

Sample

Any samples provided by Covestro are for testing purposes only and not for commercial use.

Typical Value

These values are typical values only. Unless explicitly agreed in written form, they do not constitute a binding material specification or warranted values. Values may be affected by the design of the mold/die, the processing conditions and coloring/pigmentation of the product. Unless specified to the contrary, the property values given have been established on standardized test specimens at room temperature.

Shrinkage

Shrinkage data is provided as a reference only, and is based on sample plaques molded under specific, controlled processing conditions. Shrinkage rates in production parts can vary and are influenced by several variables such as, but not limited to: part design (e.g. part size, thickness and geometry), mold design (e.g. gate type and location, runner design, mold materials, cooling system), molding conditions (e.g. processing temperature, mold temperature, packing time and pressure, injection speed).

We suggest materials be evaluated in existing applicable molds to achieve the most accurate shrinkage estimation for your specific application and processing practices. The final choice of shrinkage is the responsibility of the user of the material, and should be made based on your experience and testing results. We shall not be liable for any damage caused by the use of the shrinkage data as provided by us. If you have any questions, pls consult technical representatives from Covestro.

Contact

Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .

Downloads

Technical Data Sheet
Download
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com
Viscosity Shear Rate Makroblend® DP7645 (Multipoint Data Sheet)
Spannung-Dehnung Makroblend® DP7645 (Multipoint Data Sheet)
Viskosität Schergeschwindigkeit Makroblend® DP7645 (Multipoint Data Sheet)
Secant modulus - Strain Makroblend® DP7645 (Multipoint Data Sheet)
Sekantenmodul-Dehnung Makroblend® DP7645 (Multipoint Data Sheet)
Stress-Strain Makroblend® DP7645 (Multipoint Data Sheet)

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