Sintered Polymeric Particles For Porous Structures
AssigneeTicona LLC
InventorsErman Senoz, Dian Chen, Christopher McGrady, Jun Luo, Rong Luo
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Abstract
Disclosed are porous elements that include sintered polymeric particles. The polymeric particles can be formed of a thermoplastic composition that includes a polyarylene sulfide. The polymeric particles sintered to form the porous elements have a very narrow size distribution. The porous elements can maintain their functionality and morphology even when utilized in high temperature applications.
Claims41
A porous element comprising sintered polymeric particles, the polymeric particles comprising a thermoplastic composition that includes a polyarylene sulfide, the polymeric particles having a median particle size and a particle size distribution, the particle size distribution being such that 50% of the particles have a size between about 60% of the median particle size and about 140% of the median particle size.
A method for forming a porous element comprising:
- increasing a melt viscosity of a thermoplastic composition, the thermoplastic composition comprising a polyarylene sulfide, the thermoplastic composition having a melt viscosity following the increase of about 3,000 poise (300 Pa-s) or greater as determined by use of a capillary rheometer at 316° C. and 400 sec−1 with the viscosity measurement taken after five minutes of constant shear;
- forming polymeric particles comprising the thermoplastic composition, the polymeric particles having a median particle size in at least one dimension of about 1000 micrometers or less and having a particle size distribution such that 50% of the polymeric particles have a size between about 60% of the median particle size and about 140% of the median particle size;
- and
- sintering the polymeric particles, the porous element comprising the sintered polymeric particles.
Dependencies are inferred from the claim text.