A polymer composite comprising tubular particles

Patent metadata

Field	Value
Publication number	US-2022017718-A1
Application number	US-201917309634-A
Country	US
Kind code	A1
Filing date	Dec 6, 2019
Priority date	Dec 11, 2018
Publication date	Jan 20, 2022
Grant date	—

Abstract

A polymer composite contains tubular particles, which contain at least one resin with fibres embedded. The tubular particles have an average length in the range of 0.5 mm to 60 mm and an average wall thickness in the range of 0.0005 mm to 30 mm, whereas the fibers have an average diameter in the range of 0.0005 mm to 5.0 mm. A process can be used to prepare the polymer composite containing tubular particles. The polymer composite can be used as a cushioning material, which can be formed into a cushioning article such as a shoe sole, a furniture cushion, a bed mattress, an automotive seat cushion, a flooring substrate, an outdoor/walking surface, a mat, a pad, and the like.

First claim

1 . A polymer composite, comprising:
tubular particles comprising at least one resin with fibers embedded; wherein the tubular particles have an average length in the range of 0.5 mm to 60 mm and an average wall thickness in the range of 0.0005 mm to 30.0 mm; and wherein the fibers have an average diameter in the range of 0.0005 mm to 5.0 mm.

2 . The polymer composite according to claim 1 , wherein the tubular particles exhibit anisotropic mechanical properties.

3 . The polymer composite according to claim 1 , wherein a shape of the cross section of said tubular particles is selected from the group consisting of a circular shape, a polygonal shape, and any combination thereof; and
wherein said tubular particles have a hollow structure.

4 . The polymer composite according to claim 1 , wherein the tubular particles have an average diameter in the range of 0.5 mm to 60.0 mm.

5 . The polymer composite according to claim 1 , wherein the tubular particles have a ratio of average diameter to average wall thickness in the range of 1:1 to 120000:1

6 . The polymer composite according to claim 1 , wherein the tubular particles have a loose hulk density in the range of 0.005 to 0.300 g/ml, and a molded density in the range of 0.010 to 0.60 g/m/l,, and a tensile modulus of 13000 psi (89.6MPa) to 35000 psi (241 MPa.).

7 - 8 . (canceled)

9 . The polymer composite according to claim 1 , wherein the at least one resin comprises a foamed resin, a non-foamed resin, or a combination thereof.

10 . The polymer composite according to claim 1 , wherein the at least one resin comprises a thermoplastic polymer, a thermoset polymer, or a combination thereof

11 . The polymer composite according to claim 10 , wherein the thermoplastic polymer is a thermoplastic polyurethane foam.

12 . The polymer composite according to claim 11 , wherein the thermoplastic polyurethane foam is a foamed reaction product of:
a polyether polyol, an isocyanate component, and a chain extender; or a polyester polyol, an isocyanate component, and a chain extender, or a polyolefin polyol, an isocyanate component, and a chain extender.

14 . (canceled)

15 . The polymer composite according to claim 10 , wherein the thermoplastic polymer comprises a thermoplastic polyester elastomer (TPE), a thermoplastic styrenic elastomer (TPS), a thermoplastic polyamide (TPA), a thermoplastic vulcanite (TPV), a thermoplastic polyolefin (TPO), or any combination thereof.

16 . The polymer composite according to claim 10 , wherein the thermoset polymer comprises polyester(s), polyamide(s), epoxy resin(s), vinyl ester(s), melamine formaldehyde(s), urea formaldehyde(s), phenolic resin(s), silicone(s), polyurethane(s), vulcanized rubber(s), polyurea, phenol formaldehyde(s), duroplast, melamine resin(s), benzoxazine, furan resin(s), cyanate ester(s), thiolytes, diallyl-phthalate(s), or any combination thereof.

17 . The polymer composite according to claim 1 , wherein the fibers are selected from the group consisting of glass fibers, basalt fibers, carbon fibers, thermoplastic polymer fibers, thermoset polymer fibers, and any mixture thereof.

18 . The polymer composite according to claim 1 , wherein the tubular particle has a tensile modulus in the range of 13000 psi (89.6MPa) to 35000 psi (241 MPa), measured according to the procedures of ASTM D-638.

19 . The polymer composite according to claim 1 , wherein said fibers comprise thermoplastic polyester elastomer (TPE) fibers, thermoplastic styrenic elastomer (TPS) fibers, thermoplastic polyamide (TPA) fibers, thermoplastic vulcanate (TPV) fibers, thermoplastic polyolefin (TPO) fibers, or any combination thereof.

20 . The polymer composite according to claim 1 , wherein said fibers comprise polyester fibers, polyamide fibers, epoxy resin fibers, vinyl ester fibers, melamine formaldehyde fibers, urea formaldehyde fibers, phenolic resin fibers, silicone fibers, polyurethane fibers, or any combination thereof.

21 . The polymer composite according to claim 1 , wherein the resin and the fibers both comprise a thermoplastic polymer, a thermoset polymer, or a mixture of a thermoplastic polymer and a thermoset polymer.

22 . The polymer composite according to claim 1 , wherein the polymer composite comprises at least one adhesive,
wherein the adhesive comprises a polyvinyl alcohol resin, an acrylic resin, a vinyl acetate-based resin, a polyurethane-based resin, a silicon-based resin, a polyester-based resin a polyamide-based resin, or any combination thereof.

23 . (canceled)

24 . The polymer composite according to claim 1 , wherein the polymer composite has an air flow of at least 2 ft 3 /min (0.000943895 m 3 /sec), measured according to the procedures of ASTM D 3574 Test G.

25 . (canceled)

26 . A process for preparing the polymer composite according to claim 1 , the process at least comprising:
a) providing at least one resin and fibers; b) co-extruding or pultruding the resin and the fibers to embed the fibers into the resin, to obtain a tubular extrudate; c) segmenting the tubular extrudate, to form a plurality of tubular particles; d) disposing the plurality of tubular particles in a mold; and e) binding the plurality of tubular particles, to form the polymer composite.

27 . The process according to claim 26 , wherein the binding comprises steam heating the plurality of tubular particles to fuse together or adding at least one adhesive to bind the plurality of tubular particles.

28 - 39 . (canceled)

40 . A cushioning material, comprising the polymer composite according to claim 1 .

41 . A cushioning article, formed from the cushioning material according to claim 40 ,
wherein the cushioning article is selected from the group consisting of a shoe sole, a furniture cushion, a bed mattress, an automotive seat cushion, a flooring substrate, an outdoor walking/running surface, a mat, and a pad.

42 . (canceled)

43 . A cushioning article, comprising:
a polymer composite comprising tubular particles comprising at least one resin with fibers embedded: wherein the tubular particles have a length in the range of 0.5 mm to 60 mm, an average diameter in the range of 0.5 mm to 60.0 mm, and an average wall thickness in the range of 0.0005 mm to 5.0 mm; wherein the fibers have an average diameter in the range of 0.0005 mm to 5.0 mm; wherein the fibers are separated from each other using resin, oriented in one direction and aligned with each other; and wherein the tubular particles are randomly oriented and fused together.

44 . (canceled)

Assignees

• Basf Se

Inventors

• Martin Brad J
• Kujawski Mark Paul

Classifications

• B29C44/3426

  Heating by introducing steam in the mould · CPC title

• B29C44/507

  extruding the compound through an annular die (in general B29C48/03) · CPC title

• B29K2075/00

  Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title

• B29L2031/58

  Upholstery or cushions, e.g. vehicle upholstery or interior padding {(mattresses, cushions B29L2031/751)} · CPC title

• B29C67/205

  comprising surface fusion, and bonding of particles to form voids, e.g. sintering · CPC title