Uhmwpe fiber
Abstract
The invention relates to a creep optimized gel-spun fiber comprising a polyethylene fiber body obtained by spinning an UHMWPE comprising alkyl branches (AB) and having an elongational stress (ES), and a ratio (I) of at least 0.2, wherein a stabilizer is present inside the fiber body, characterized in that the amount of said stabilizer is between 0.05 and 10 parts by weight based on 100 parts by weight of the amount of the PE forming said fiber body. ( A B / 1000 C E S ) ( I )
Claims
exact text as granted — not AI-modified1 . A creep optimized gel-spun fiber comprising a polyethylene fiber body obtained by spinning an UHMWPE comprising alkyl branches (AB) and having an elongational stress (ES), and a ratio
(
A
B
/
1000
C
E
S
)
of at least 0.2, wherein a stabilizer is present inside the fiber body, characterized in that the amount of said stabilizer is between 0.05 and 10 parts by weight based on 100 parts by weight of the amount of the PE forming said fiber body.
2 . The fiber according to claim 1 obtained by spinning an UHMWPE comprising ethyl branches and having an intrinsic viscosity (IV) of at least 5 dl/g, an elongational stress (ES), and a ratio
(
C
2
H
5
/
1000
C
E
S
)
of at least 0.5, preferably at least 1.0
3 . The fiber according to claim 2 wherein the UHMWPE has an amount of ethyl branches per thousand carbon atoms (C2H5/1000C) of between 0.60 and 1.10.
4 . The fiber according to claim 1 obtained by spinning an UHMWPE comprising butyl branches and having an intrinsic viscosity (IV) of at least 5 dl/g, an elongational stress (ES), and a ratio
(
C
4
H
9
/
1000
C
E
S
)
of at least 0.2.
5 . The fiber according to claim 1 wherein the IV of the UHMWPE is at least 15 dl/g, preferably at least 19 dl/g.
6 . The fiber according to claim 1 wherein the UHMWPE has an ES of at most 0.50.
7 . The fiber of claim 1 wherein the amount of stabilizer is between 0.1 and 5 parts by weight.
8 . The fiber of claim 1 wherein the stabilizer is a hindered amine stabilizers (HAS) having a molecular weight of at least 500 g/mol.
9 . The fiber of claim 1 wherein the stabilizer is a hindered amine stabilizers (HAS) which is soluble in decalin at a level of at least 1 g/l at 21° C.
10 . The fiber of claim 1 wherein the stabilizer is chosen from the group consisting of phenol stabilizers, organic phosphite stabilizers, organic thioether stabilizers, hindered phenols, aromatic phosphites, amines and combination thereof.
11 . A rope, a crane rope, a mooring rope or a cordage comprising the fiber according to claim 1 .
12 . A reinforced product containing reinforcing elements wherein the reinforcing elements contain the fiber according to claim 1 .
13 . Multi-layered composite articles for ballistic applications e.g. body armor, helmets, hard and flexible shield panels and panels for vehicle armouring, said articles containing the fiber according to claim 1 .
14 . Product containing the fiber according to claim 1 , wherein said product is chosen from the group consisting of fishing lines and fishing nets, ground nets, cargo nets and curtains, kite lines, dental floss, tennis racquet strings, canvas, woven and nonwoven cloths, webbings, battery separators, capacitors, pressure vessels, hoses, umbilical cables, automotive equipment, power transmission belts, building construction materials, cut and stab resistant and incision resistant articles, protective gloves, composite sports equipment, skis, helmets, kayaks, canoes, bicycles and boat hulls and spars, speaker cones, high performance electrical insulation, radomes, sails, and geotextiles.Join the waitlist — get patent alerts
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