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White oil sizing agent carrying dispersed graphene and preparation method thereof, as well as preparation method of UHMWPE (Ultrahigh Molecular Weight Polyethylene) fiber

A graphene and white oil technology, applied in the direction of fiber chemical characteristics, single-component polyolefin rayon, rayon manufacturing, etc., can solve the problem of spinneret plugging, difficulty in stable and uniform dispersion, and inconformity with superfiber technology Questions such as requirements

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, the high-solid graphene / white oil slurry prepared in the traditional process has poor dispersibility and severe agglomeration. It is difficult to maintain stable and uniform dispersion for a long time, and the shelf life is short. As a result, in the actual production of composite fibers, continuous operation 7 ~8 hours later, the spinneret was blocked, forcing the production to stop, and the spinneret was cleaned and replaced, which did not meet the process requirements for continuous superfiber production

Method used

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  • White oil sizing agent carrying dispersed graphene and preparation method thereof, as well as preparation method of UHMWPE (Ultrahigh Molecular Weight Polyethylene) fiber
  • White oil sizing agent carrying dispersed graphene and preparation method thereof, as well as preparation method of UHMWPE (Ultrahigh Molecular Weight Polyethylene) fiber

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preparation example Construction

[0101] (2) Adjust the formula and improve the process parameters for the preparation of the graphene / white oil slurry, that is: add the mixed material after ball milling into the white oil solvent, heat it to 8-130°C for 0.2-3h while stirring, Then gradually raise the temperature to 130-160° C., and keep it warm for 2-15 hours until a uniform solution is formed, that is, a uniformly dispersed graphene / white oil slurry.

[0102] The graphene / white oil slurry dispersion stability that the present invention adopts new technology to prepare has obvious improvement effect (see attached figure 2 ), can quickly pass through a 650-mesh screen at room temperature, and there is basically no sieve residue on the screen, which lays the foundation for the subsequent preparation of high-strength graphene / UHMWPE composite fibers, thus solving the problem of spinneret blockage in the continuous production of superfibers To solve the hole problem, the tensile strength of the prepared composite...

Embodiment 1

[0105] For slurry preparation, see figure 1 :

[0106] Mix the antioxidant 1010 (0.01kg), PSS (0.01kg), graphene powder (0.01kg) and 9.997kg white oil to completely infiltrate the antioxidant 1010, PSS, and graphene powder, and then The above-mentioned mixed material is ball milled so that the components are fully mixed. The speed of the ball mill is 500rpm, the mass ratio of the ball to material is 10:1, and the balls are mixed with balls with diameters of 5mm, 12mm and 15mm. The three The volume ratio of 3:1:1, ball milling 1h;

[0107] Add the above-mentioned mixed material into 89.973kg of white oil, heat it to 80°C for 0.5h while stirring, then gradually raise the temperature to 120°C and keep it for 4h to form a uniform solution, that is, a uniformly dispersed graphene / white oil slurry (dispersion See figure 2 ).

[0108] Application of slurry in UHMWPE fiber:

[0109] Add 10kg of UHMWPE powder (graphene accounts for 0.1% of UHMWPE) and 1.14kg of white oil to the o...

Embodiment 2

[0111] Preparation of composite paste, see figure 1 :

[0112] Mix antioxidant 1010 (1kg), SDS (1kg), graphene powder (0.01kg) and 9.799kg white oil, carry out ball milling above-mentioned mixed material, make each component fully mix, and the rotating speed of described ball milling is 1000rpm 1. The mass ratio of the ball to the material is 10:1, and the grinding ball is made of a mixture of grinding balls with diameters of 5mm, 12mm and 15mm. The volume ratio of the three is 3:1:1, and the ball is milled for 10 minutes;

[0113]The above-mentioned mixed material was added to 88.191kg white oil, heated to 110°C for 0.6h while stirring, and then gradually heated to 138°C for 5h to form a uniform solution, i.e. a uniformly dispersed graphene / white oil slurry.

[0114] Further preparation of composite fibers of UHMWPE:

[0115] Add 10kg of UHMWPE powder (graphene accounts for 0.1% of UHMWPE) and 3.12kg of white oil to the obtained slurry to make a pre-spinning solution, ente...

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Abstract

The invention discloses a preparation method of white oil sizing agent carrying dispersed graphene. The preparation method comprises the following steps: 1) mixing a component A, a component B, graphene powder and white oil, and performing ball milling on the mixture in order that the components are mixed fully, wherein the component A is an antioxidant, and the component B is a dispersing agent and / or modifying agent; 2) adding the mixture obtained in the step 1) into the white oil, heating the mixture to a first temperature with stirring, keeping the temperature for 0.2 to 3 hours, then heating the mixture to a second temperature, and keeping the temperature while continually stirring for 2 to 15 hours to form a uniform solution, wherein the second temperature is 30 to 62 DEG C higher than the first temperature.

Description

technical field [0001] The invention relates to a graphene-dispersed white oil slurry and a preparation method thereof, in particular to a graphene-dispersed white oil slurry for improving the performance of UHMWPE fibers and a preparation method thereof, belonging to organic-inorganic composite materials technology field. 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 stretching orientation, it has unrivaled ultra-high tensile strength. Therefore, fibers with ultra-high elastic modulus and strength can be prepared by gel spinning method, 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, ...

Claims

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Application Information

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IPC IPC(8): D01F1/10D01F6/46
CPCD01F1/10D01F6/46
Inventor 周洁孙丹萍许健君徐阳瞿研
Owner 南通恒尚新材料科技有限公司
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