Molecular composites based on high-performance polymers and an interpenetrating liquid crystal thermoset
AssigneeAllotropica Technologies Inc.
InventorTheodorus Jacobus DINGEMANS
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Abstract
The invention is directed to a polymeric composition comprising a first polymer (in particular HPP) and a liquid crystal thermoset (LCT) network that interpenetrates said first polymer, which LCT network comprises LCT oligomers that are at least partly polymerized, as well as to a method for preparing such. The polymeric composition of the invention does not separate into two distinct polymer phases (first polymer and LCT) over time and has improved thermo-mechanical properties. In particular, the invention may be used to improve the properties of HPP. The polymeric composition can be used as a high-resistant material, in particular having improved heat resistance.
Claims30
Polymeric composition comprising a first polymer and a liquid crystal thermoset (LCT) network that interpenetrates said first polymer, which LCT network comprises LCT oligomers that are at least partly polymerized.
Polymeric composition according to the previous claim, wherein the first polymer and the LCT network form a true molecular mixture.
Polymeric composition according to any of the previous claims, wherein the first polymer is a high-performance polymer.
Polymeric composition according to any of the previous claims, wherein the first polymer is selected from the group consisting of liquid crystal polymer (LCP), polyethersulfone (PES), polyimide (PI), polyetherimide (PEI), polyetheretherketone (PEEK), polyetherketoneketone (PEKK), polyphenylene sulfide (PPS) or polyaryletherketone (PAEK).
Polymeric composition according to any of the previous claims, wherein the first polymer is a thermoplastic polymer.
Polymeric composition according to any of the previous claims, wherein the LCT oligomer comprises a liquid crystal backbone selected from the group consisting of an ester, an ester-imide and an ester-amide, wherein the backbone of the oligomer is entirely, or at least substantially entirely, aromatic in composition.
Polymeric composition according to any of the previous claims, wherein the LCT oligomers has a backbone having at least one structural repeat unit selected from the group consisting of
- wherein Ar is an aromatic group.
Polymeric composition according to any of the previous claims, wherein the composition comprises 1-50 wt. % of the LCT network, based on the total weight of the composition.
Polymeric composition according to any of the previous claims, wherein the oligomers have been polymerized by cross-linking via reactive end-groups of the oligomers.
Polymeric composition according to any of the previous claims, wherein the degree of crosslinking between the LCT oligomers in the LCT network is 5-40 mol %.
Dependencies are inferred from the claim text.