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Preparation method of composite white oil slurry and preparation method of composite fibers of UHMWPE

A composite fiber and white oil technology, which is applied in the fields of fiber chemical characteristics, melt spinning, rayon manufacturing, etc., can solve the problems of large size, wide particle size distribution of graphene particles, and difficulty in meeting production needs.

Active Publication Date: 2019-02-05
南通恒尚新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are not too many graphene / white oil slurries on the market at present, and some graphene / white oil slurries that have appeared have poor dispersibility, and the graphene particles dispersed in them have a wide particle size distribution and large sizes. , the agglomeration is serious, it is difficult to form an effective interface combination with white oil, and maintain a long-term stable and uniform dispersion, the shelf life is short, and it is difficult to meet the production needs

Method used

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  • Preparation method of composite white oil slurry and preparation method of composite fibers of UHMWPE
  • Preparation method of composite white oil slurry and preparation method of composite fibers of UHMWPE
  • Preparation method of composite white oil slurry and preparation method of composite fibers of UHMWPE

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Preparation of composite paste, see figure 1 :

[0080] (1) Add antioxidant 1010 (0.01kg) and PSS (0.01kg) to white oil (99.97kg), and heat to 80°C for 0.2h while stirring;

[0081] (2) The mixed solution is gradually heated up to 120°C at a heating rate of 20°C / h and kept for 3 minutes until the antioxidant 1010 and PSS are fully dissolved to form a uniform solution;

[0082] (3) Graphene powder (0.01kg) was gradually added to the above solution under high-speed stirring conditions, and kept warm for 2 hours to obtain graphene / white oil slurry.

[0083] Further preparation of composite fibers of UHMWPE:

[0084] (4) Add UHMWPE powder 10kg (graphene accounts for 0.1% of UHMWPE) and white oil 1.14kg in the graphene / white oil slurry that obtains, make pre-spinning liquid, enter in swelling kettle and be heated up to 100 ℃, again After dissolving kettle, feeding kettle, and twin-screw extruder, the temperature is raised from 100°C to 268°C in steps of 100 / 130 / 160 / 210 / 2...

Embodiment 2

[0086] Preparation of composite paste, see figure 1 :

[0087] (1) Antioxidant 1010 (1kg) and SDBS (1kg) were added to white oil (97.99kg), heated to 110°C for 0.5h while stirring;

[0088] (2) The mixed solution is gradually heated up to 130°C at a heating rate of 25°C / h and kept for 5 minutes until the antioxidant 1010 and SDBS are fully dissolved to form a uniform solution;

[0089] (3) Graphene powder (0.01kg) was gradually added to the above solution under high-speed stirring conditions, and kept warm for 4 hours to obtain graphene / white oil slurry.

[0090] Further preparation of composite fibers of UHMWPE:

[0091] (4) Add UHMWPE powder 10kg (graphene accounts for 0.1% of UHMWPE) and white oil 3.12kg in the graphene / white oil slurry that obtains, make pre-spinning liquid, enter in the swelling kettle and be heated up to 100 ℃, again After dissolving kettle, feeding kettle, and twin-screw extruder, the temperature is raised from 100°C to 268°C in steps of 100 / 130 / 160...

Embodiment 3

[0093] Preparation of composite paste, see figure 1 :

[0094] (1) Add antioxidant 164 (1kg) and SDS (0.01kg) to white oil (98.98kg), and heat to 110°C for 0.7h while stirring;

[0095] (2) The mixed solution is gradually heated up to 140°C at a heating rate of 28°C / h and kept for 10 minutes until the antioxidant 164 and SDS are fully dissolved to form a uniform solution;

[0096] (3) Graphene powder (0.015kg) was gradually added to the above solution under high-speed stirring conditions, and kept warm for 5 hours to obtain graphene / white oil slurry.

[0097] Further preparation of composite fibers of UHMWPE:

[0098](4) Add UHMWPE powder 10kg (graphene accounts for 0.15% of UHMWPE) and white oil 2.131kg in the graphene / white oil slurry that obtains, make pre-spinning liquid, enter in swelling kettle and be heated up to 100 ℃, again After dissolving kettle, feeding kettle, and twin-screw extruder, the temperature is raised from 100°C to 268°C in steps of 100 / 130 / 160 / 210 / 24...

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Abstract

The invention discloses a preparation method of composite white oil slurry. The preparation method comprises the steps: (1) a component A and a component B are added into white oil, under the stirringcondition, heating is conducted to the first temperature, and heat preservation is conducted for 0.2-3 h, wherein the component A is an antioxidant, and the component B is a dispersant and / or a modifier; (2) the mixed solution in the step (1) is heated to the second temperature, and heat preservation is conducted till the antioxidant, the dispersant and / or the modifier are fully dissolved to forma uniform solution, wherein the second temperature is higher than the first temperature by 20-70 DEG C, preferably 20-50 DEG C; and (3) the solution is kept at the second temperature, under high speed stirring, graphene powder is added into the solution obtained in the step (2), and continuous heat preservation is conducted till the uniform slurry is formed.

Description

technical field [0001] The invention relates to a slurry and a preparation method thereof, in particular to a graphene-dispersed white oil slurry for improving UHMWPE fibers and a preparation method thereof, belonging to the technical field of organic-inorganic composite materials. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber, also known as ultra-high-strength polyethylene (UHMWPE) fiber, ultra-high modulus polyethylene (UHMWPE) fiber. Because UHMWPE has the necessary structural characteristics toward stretch orientation, it has unrivaled ultra-high tensile strength, so fibers with ultra-high elastic modulus and strength can be prepared by gel spinning, and its tensile strength is as high as 3 -3.5GPa, the tensile elastic modulus is as high as 100-125GPa; the fiber specific strength is the highest among all the commercialized fibers so far, 4 times larger than carbon fiber, 10 times larger than steel wire, and 50% larger than aramid f...

Claims

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Application Information

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IPC IPC(8): D01F6/46D01F1/10D01D5/08
CPCD01D5/08D01F1/10D01F6/46
Inventor 孙丹萍周洁许健君徐阳瞿研
Owner 南通恒尚新材料科技有限公司
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