# US 10,767,279 B2 · Method of preparing wear and cut resistant UHMWPE fibers

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- Number: US 10,767,279 B2
- Document ID: US10767279B2
- Status: Granted
- Kind: B2
- Application number: 15/892,357
- Filed: 2018-02-08
- Published: 2018-12-20
- Granted: 2020-09-08
- Earliest claimed: 2017-06-20
- Assignees: Zhejiang Jinhao New Materials Co., Ltd.
- Applicants: Zhejiang Jinhao New Materials Co., Ltd.
- Inventors: Jianfang Zhang; Xinwei Wang; Yongfei Sun; Shuiyao Liu; Wenlan Gong; Wenjun Wen
- Web page: https://patentgrep.com/patent/US10767279B2

## CPC

- D01F 1/10: Other agents for modifying properties
- D01D 1/02: Preparation of spinning solutions
- D01D 5/04: Dry spinning methods {(D01D5/0038 takes precedence)}
- D01D 5/06: Wet spinning methods {(D01D5/0046 takes precedence)}
- D01F 6/04: from polyolefins
- D01F 6/30: comprising olefins as the major constituent
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- D10B 2321/0211: high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
- D10B 2401/00: Physical properties
- D10B 2501/041: Gloves
- D01F: CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01D: MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES

## Abstract

The present invention relates to a method of preparing wear and cut resistant UHMWPE fibers. In the method, a resin material is added into a ball grinder, and the temperature is controlled, and then a mother liquor is added slowly into the ball grinder and mixed uniformly, and the mixed solution is vacuumed in a sealed container for several hours and extruded by a twin screw extruder, a metering pump, and a spin beam, and finally processed with drafting and hot drawing and winding formation. The fiber so manufactured has the features of soft touch and comfortable wearing.

## Claims

### Claim 1

A method of preparing wear and cut resistant UHMWPE fibers, comprising steps of:
preparing a mother liquor by adding 0.1-0.5 parts of coupling agent A, 1-20 parts of nano additive B, 1-20 parts of additive C, 0.1-5 parts of sodium stearate, 0.1-8 parts of nano-sized dispersant, and 0.1-10 parts of antioxidant into 1000 parts of solvent oil, and processed by a 1000-20000 r/min high-speed rotating emulsifier for 2-6 hours, and a mixing temperature being controlled at 25° C.-100° C., wherein the nano additive B is selected from the group consisting of SiO2, TiO2, Al2O3, MgO, CaO, Si3N4, ZrO2, CrO3, montmorillonite, nano carbon black, graphite, tin antimony oxide, and carbon nanotube, and wherein the additive C is selected from the group consisting of a basalt staple fiber, a rockwool staple fiber, a slag cotton staple fiber, a glass staple fiber, an aluminum silicate cotton staple fiber, a polyester staple fiber, a carbon staple fiber, and an aramid staple fiber;
preparing a resin material which is an UHMWPE resin with a viscosity-average molecular weight of 2 millions-8 millions, adding 20-200 parts of the resin material into a ball grinder at a temperature controlled at 30° C.-100° C.;
adding the mother liquor into the ball grinder at a speed of 2 parts/minute;
blending and mixing the mother liquor and the resin material uniformly to form a mixed solution;
vacuuming the mixed solution in a sealed container for 2-6 hours; and
the mixed solution being extruded in sequence by a twin screw extruder, a metering pump, a spin beam, and processed by drafting, and drawing and winding formation.

### Claim 2 (depends on 1)

The method of preparing wear and cut resistant UHMWPE fibers according to claim 1, wherein the solvent oil is selected from the group consisting of a white oil, a vegetable oil, an animal oil, decalin, tetrahydronaphthalene, xylene, and toluene.

### Claim 3 (depends on 1)

The method of preparing wear and cut resistant UHMWPE fibers according to claim 1, wherein the coupling agent A is selected from the group consisting of a silane coupling agent, a titanate coupling agent, a phosphate coupling agent, a zirconate coupling agent, and a borate coupling agent.

### Claim 4 (depends on 1)

The method of preparing wear and cut resistant UHMWPE fibers according to claim 1, wherein the nano additive B has a size of 10 nm-400 nm.

### Claim 5 (depends on 1)

The method of preparing wear and cut resistant UHMWPE fibers according to claim 1, wherein the additive C has a length of 1 μm-500 μm, and a diameter of 1-100 μm.

### Claim 6 (depends on 1)

The method of preparing wear and cut resistant UHMWPE fibers according to claim 1, wherein the antioxidant is selected from the group consisting of tetra [β-(3,5-di-tert-butyl-4-hydroxyphenyl)-propionate], tris(2,4-di-tert-butylphenyl) phosphite, and β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate.

### Claim 7 (depends on 1)

The method of preparing wear and cut resistant UHMWPE fibers according to claim 1, wherein the UHMWPE has a molecular weight of 4 millions-6.5 millions; the resin has an average particle size of 100-300 μm, a particle size distribution width of (d90−d10)/d50: 0.7-1.8, and a bulk density of 0.3-0.5 g/cm3.