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 Seeking: Polypropylene filler technology that is better than talc filler in stiffness, heat resistance, and light weight |
Our client wants to increase polypropylene stiffness and heat resistance, and decrease its weight. (Similar improvements to polyethylene would also be of interest.) Specifically, they want a technology that is better than 10% talc-filled polypropylene in these specific ways:
- 30% increase in flexural modulus
- 10% increase in tensile strength
- 30% increase in HDT (heat deflection temperature)
- Equal or lower density than 10% talc-filled polypropylene (compound density of < 1.0 grams per /cc).
Any improvements in these features should not degrade the material in other ways, such as tensile strength, impact resistance, surface finish, and so forth.
BACKGROUND
Plastic additives always demand a balance between performance and change to physical characteristics. This organization has been working with 10% talc-filled polypropylene (by weight). Talc produces a stiffer plastic and increases heat resistance, but increases plastic density to an unacceptable level for the application.
Ideally, you have a new additive or a new approach to creating the required improvements to the polypropylene. Your solution may require the removal of some or all of the talc and replace it with another substance in order to achieve the improvements.
Whatever your proposed solution, it should not adversely impact other properties of the polypropylene.
Also of interest would be maintaining current stiffness, heat resistance, or density at a reduced cost or quantity.
CONSTRAINTS
- 30% increase in flexural modulus.
- 10% increase in tensile strength.
- 30% increase in HDT (heat deflection temperature).
- Equal or lower density than 10% talc-filled polypropylene.
- Safety is important to us. Any new ingredient should not create safety hazards when inhaled during mixing or cause harm during incineration or processing.
- Your additive must work with an extruder (or possibly a compounder). An additive that is too abrasive -- over 6.5 on the Mohs hardness scale -- may be harder than the steel in an extruder. We may make an exception for a true nano-scale additive.
- No restriction between organic or inorganic additives.
- Preference for additives that have some performance data for thermoplastics.
POSSIBLE SOLUTION AREAS
Materials science in organics or inorganics.
Solutions from the paper/packaging industry, metal, ceramics, thermoset resins.
Additives from other industries that might be dispersible into polyolefins.
Publish Date: 06/30/2010
Desired Timeframe: Within 12 months
Field Of Use and Intended Application: Durable goods, automotive parts, construction, decking, siding.
Desired Outcome
Ideally, you will provide one or more new additives that can provide enhanced or additional properties not currently available for polypropylenes.
Previously Attempted Solutions
We have tried, and remain interested in, new methods and approaches to more traditional materials such as clays, talcs, glass fibers, etc. Technology must bring new value to enhance current offerings such as novel dispersion technologies.
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| Fecha de publicación:
29/07/2010
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| Referencia:
2010/10405
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| Tipo:
Demanda
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| País:
Estados Unidos
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| Fuente:
yet2
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| Tecnologías: |
- /Materia prima/Termoplásticos/PP
- /Materia prima/Aditivos/Cargas
- /Materia prima/Aditivos
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| Palabras clave:
polipropileno, densidad, cargas, aditivo
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+ Info:
http://www.yet2.com/app/list/wantad?id=10405&sid=3
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< Volver
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