Polymer blend with PEEK properties 3

[manolo82]

Hi all, we are a small enterprise, and we are trying to get a polymer blend with PEEK 150 G similar properties, so we would like to know if there are any polymer similar to PVDF that we can blend with PEEK and mantain his mechanical and chemical properties.

Thanks in advanced

 

[patprimmer]

I don't want to pick on you because of English second language, but your post is really impossible to interpret.

Can you rephrase, possibly with the help of someone with better English skills.

Regards
Pat
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[manolo82]

Sorry fot that mate, i will try to write again by myself, the point is the folloween:

For aeronautic applications, the main thermoplastic engineering polymer used is the PEEK. This polymer offers interesting properties:

- High temperature resistance
- Excellent resistance to a wide range of organic and inorganic chemicals
- Excellent mechanical properties at high temperature and in rigorous environment
- Good fire resistance

But, PEEK has a very melting point (343 ºC) and as a consequence a very high processing temperature (around 400 ºC) that requires a lot of energy for processing and the use of costly environment products.

The objective of this proposal is to develop a thermoplastic matrix with a lower processing temperature than PEEK for composite applications in aeronautic, also the mechanical and physic-chemical properties will be similar to the PEEK properties.. The polymer blend will have a processing temperature under 300 ºC and a glass transition higher than 140 ºC.

The doubt is if anyone can help us to find a polymer which we can use to blend with PEEK or with other polymer and obten similar properties to PEEK.

Thanks in advanced

 

[patprimmer]

Have you tried nylon 6.6

Regards
Pat
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[manolo82]

we have thought to use PVDF because it has a low melting point (165 - 175 ºC), but we dont know if the final properties of the blend will fulfill with the properties requested.

thanks for your help and patience

 

[Pud]

use of costly environment products

Such as?

What's wrong with nylon 6.6? Fulfils all your criteria given so far. (Peek also has other beneficial) properties, of course.

Why do I get the feeling you have too much time on your hands?
Have you ever thought that if what you want is possible, then all the polymer companies in the world would be making it?

http://www.tynevalleyplastics.co.uk

 

[Demon3]

If you want a thermoplastic polymer that can stay stiff at high temperature, it has to have a high processing temperature by definition.

What you ask is impossible. Pat and Pud have given you your best option.

Chris DeArmitt PhD FRSC CChem

http://www.phantomplastics.com

Consultant to the plastics industry

 

[patprimmer]

A new polymer with a heat deflection temperature higher than its melting point would be a neat trick ;-)

Thermosets have a HDT higher than their processing temperature, but mostly lack in some other properties.

I am not convinced PEEK is the main engineering plastic used in aeronautical.

Aircraft interiors use a lot of ABS and PC/ABS and lots of mechanisms use nylon. Windows are acrylic. Many structural parts are now epoxy/carbon fibre.

A more accurate statement might be that most PEEK sales are to aerospace.



Regards
Pat
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[Compositepro]

PEEK is one of the few thermoplastics that is actually finding use in aerospace applications as a matrix resin in carbon fiber composites. Thermoplastic resins used in place of epoxy has been the "new wave" for about 20 years now. A lot of research was funded by the Air Force.

 

[manolo82]

""Have you ever thought that if what you want is possible, then all the polymer companies in the world would be making it?""

Our intention is to be the first company to make it, because we are a R&D center, anyway thank all of you for your replies and i will continue working on it

Best regards

 

[Demon3]

I heard that soon there will be a new PEEK manufacturer on the market with PEEK at half of today's cost. So your solution may already be out there in the next year or so.

It's only remained expensive because for a while Victrex had a virtual monopoly.

Chris DeArmitt PhD FRSC CChem

http://www.phantomplastics.com

Consultant to the plastics industry

 

[BiPolarMoment]

Both Solvay and Quadrant are making PEEK now (and maybe others) and I've been watching it closely since we have a similar cost issue in implantable materials--unfortunately there is a much greater barrier (FDA) before that becomes a viable alternative to PEEK Optima from Invibio (Victrex).

I'm speaking out of ignorance with regards to your application but have you looked at other ketones like PEKK?

 

[Demon3]

Solvay and Evonik are making PEEK as well as Victrex. Gharda are coming out with new PEEK relatives. None of those are the one I was talking about though.

Chris DeArmitt PhD FRSC CChem

http://www.phantomplastics.com

Consultant to the plastics industry

 

[patprimmer]

I thought Solvay bought Gharda about 3 years or so ago.

Regards
Pat
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[Demon3]

Right Solvay bought Gharda's PEEK but now Gharda has resurrected itself doing PEEK variants like (from memory) PEKK and PAEK.

Chris DeArmitt PhD FRSC CChem

http://www.phantomplastics.com

Consultant to the plastics industry