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This is the free Material Data Center Datasheet of ACRYMID® TT70 - PMMI - Röhm GmbH

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Processing/Physical Characteristics - Mechanical properties - Thermal properties - Optical properties - Other properties - Diagrams

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Product Texts

Productprofil:

ACRYMID® TT70 is a highly heat distortion-resistant poly(n-methyl methacrylimide) (PMMI).

 

Besides showing the properties common to all ACRYMID® molding compounds, such as  

 

• excellent transmission and clarity,

• very high mechanical strength and rigidity,

• good weather resistance.

 

ACRYMID® TT70 has the following specific characteristics:

 

• high stability of the optical characteristics at long-lasting thermal load,
• highest heat deflection temperature under load.

Application:

ACRYMID® molding compound is particularly suitable for injection molding of items meant for applications that involve maximum thermal loads.

Example:

lenses, light guides, lighting fixtures, covers.

Processing:

ACRYMID®  molding compound can be processed on injection molding machines with standard 3-zone general purpose screws for thermoplastics.

Physical Form / Packaging:

ACRYMID® is supplied as pellets of uniform size in aluminum-laminated, 25kg polyethylene bags.

Processing/Physical Characteristics	Value	Unit	Test Standard
ISO Data
Melt volume-flow rate, MVR	1.7	cm³/10min	ISO 1133
Temperature	260	°C	-
Load	10	kg	-
Density of melt	1150	kg/m³	-

Mechanical properties	Value	Unit	Test Standard
ISO Data
Tensile Modulus	4000	MPa	ISO 527
Stress at break	80	MPa	ISO 527
Strain at break	3	%	ISO 527
Charpy impact strength, +23°C	20	kJ/m²	ISO 179/1eU
Charpy notched impact strength, +23°C	1.4	kJ/m²	ISO 179/1eA

Thermal properties	Value	Unit	Test Standard
ISO Data
Temp. of deflection under load, 1.80 MPa	149	°C	ISO 75-1/-2
Temp. of deflection under load, 0.45 MPa	158	°C	ISO 75-1/-2
Vicat softening temperature, B	170	°C	ISO 306

Optical properties	Value	Unit	Test Standard
ISO Data
Luminous transmittance	91	%	ISO 13468-1, -2

Other properties	Value	Unit	Test Standard
Water absorption	6	%	Sim. to ISO 62
Density	1210	kg/m³	ISO 1183

Diagrams

Characteristics

Processing

Injection Molding

Delivery form

Pellets

Special Characteristics

Light stabilized or stable to light, U.V. stabilized or stable to weather, Heat stabilized or stable to heat, Transparent

Regional Availability

North America, Europe, Asia Pacific, South and Central America, Near East/Africa

Other text information

Injection molding

PREPROCESSING
Predrying temperature: max. 120 °C
Predrying time in a desiccant-type drier: 2 - 3 h
PROCESSING
Melt temperature: 260 - 290°C
Mold temperature: approx. 130°C

Chemical Media Resistance

Acids
	Acetic Acid (5% by mass) (23°C)
	Lactic Acid (10% by mass) (23°C)
	Sulfuric Acid (38% by mass) (23°C)
	Sulfuric Acid (5% by mass) (23°C)
Alcohols
	Isopropyl alcohol (23°C)
Hydrocarbons
	n-Hexane (23°C)
Mineral oils
	SAE 10W40 multigrade motor oil (23°C)
Standard Fuels
	Standard fuel without alcohol (pref. ISO 1817 Liquid C) (23°C)
	Standard fuel with alcohol (pref. ISO 1817 Liquid 4) (23°C)
	Diesel fuel (pref. ISO 1817 Liquid F) (23°C)
Other
	Water (23°C)

Disclaimer

Copyright Altair Engineering GmbH. Altair Engineering GmbH assumes no liability for the system to be free of errors. The user takes sole responsibility for the use of this data under the exclusion of every liability from Altair Engineering GmbH; this is especially valid for claims of compensation resulting from consequential damages. Altair explicitly points out that any decision about the application of materials must be double checked with the producer of this material. This includes all contents of this system. Copyright laws are applicable for the content of this system.

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