Questions about the use of Xencast PX30


Author
Message
Asurada
Asurada
Junior Member (13 reputation)Junior Member (13 reputation)Junior Member (13 reputation)Junior Member (13 reputation)Junior Member (13 reputation)Junior Member (13 reputation)Junior Member (13 reputation)Junior Member (13 reputation)Junior Member (13 reputation)
Group: Forum Members
Posts: 10, Visits: 954
I'm trying to use PX30 to make a flexible mold, this resin is very flexible, but his tear resistance is poor, I bend it with my hand, it can bend a lot of angle, but when I twist it, it will easily break and crack.
Is this because of the properties of the resin? I can confirm that my blending ratio is no problem, why does it have such a problem? Or there are no other rubber-like resins, I would like to take to make a flexible resin mold, for casting silicone hand ring.I'm trying to use PX30 to make a flexible mold, this resin is very flexible, but his tear resistance is poor, I bend it with my hand, it can bend a lot of angle, but when I twist it, it will easily break and crack. Is this because of the properties of the resin? I can confirm that my blending ratio is no problem, why does it have such a problem? Or there are no other rubber-like resins, I would like to take to make a flexible resin mold, for casting silicone hand ring.I'm trying to use PX30 to make a flexible mold, this resin is very flexible, but his tear resistance is poor, I bend it with my hand, it can bend a lot of angle, but when I twist it, it will easily break and crack. Is this because of the properties of the resin? I can confirm that my blending ratio is no problem, why does it have such a problem? Or there are no other rubber-like resins, I would like to take to make a flexible resin mold, for casting silicone hand ring.



Warren (Staff)
Warren (Staff)
Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)Supreme Being (3.8K reputation)
Group: Administrators
Posts: 2.4K, Visits: 6.3K
You are almost certainly just reaching the limit of what the resin is capable of.  Twisting and tearing it putting a lot of force in multiple directions hence you can rip chunks out of it, yet with a simple bending force it bends fine.

If you compare the mechanical data you are looking at  test figures of  tear strength being 3.5 kN/m for the PX30 where as a good quality RTV Silicone is in the 15kN/m ball park.

So what that means is in practice a typical silicone has 4 times the tear strength, so try not to compare the PX30 directly with a silicone and just be a bit more careful during the demoulding process to avoid tearing the rubber.


Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant
GO

Merge Selected

Merge into selected topic...



Merge into merge target...



Merge into a specific topic ID...




Similar Topics

Reading This Topic

Explore
Messages
Mentions
Search