Preparation method of functionalized ultra-high molecular weight polyethylene resin

An ultra-high molecular weight, polyethylene resin technology, applied in the manufacture of single-component polyolefin rayon, conductive/antistatic filament, etc. The molecular weight is controllable, the production process is simple, and the molecular weight distribution is uniform.

Active Publication Date: 2016-08-31
SHANGHAI RES INST OF CHEM IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method uses a high-speed mixer blending method to mix and granulate additives such as nanometer and molybdenum disulfide. This method can be used for the preparation of wear-resistant pipes, plates and other conditions that do not require high resin raw materials, but it is suitable for the preparation of high-end fibers. Therefore, the preparation of functional high-end fibers and ultra-high molecular weight polyethylene resin for diaphragms has important research significance

Method used

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  • Preparation method of functionalized ultra-high molecular weight polyethylene resin

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Embodiment 1

[0025] A method for preparing a functional ultra-high molecular weight polyethylene resin, which adopts a low-pressure slurry method. The mass ratio of raw materials is 80-100 parts of ethylene, 80-200 parts of solvent oil, and 1-10 parts of modified additives. Heat the reactor to 50-100°C and vacuumize it for 1 hour, replace it with clean and dry nitrogen, add a certain amount of dried solvent oil and catalyst, start stirring, add a certain amount of nitrogen and hydrogen, and finally add ethylene to the reactor continuously to control Pressure 0.1-1.5MPa, temperature 50-100°C for 2-4 hours, after polymerization, quickly cool the reactor to 40°C, filter off solvent oil to obtain slurry, dry the slurry to obtain functional ultra-high molecular weight polyethylene resin. The molecular weight of functional ultra-high molecular weight polyethylene resin is between 80 and 10 million, the resin particles are uniform, the average particle size ranges from 100 to 300 μm, the particle ...

Embodiment 2

[0027] A kind of preparation method of functional ultra-high molecular weight polyethylene resin, ethylene 2750L (volume under standard conditions), solvent naphtha hexane 3800g, SiO 2 Mass 30g, using aluminum alkyl / TiCl 4 Catalyst, the temperature of the reaction kettle is set at 65-66°C, the stirring speed is 800r / min, and the reaction is 2h. Diameter distribution width (d90-d10) / d50: 0.966, bulk density (g / cm 3 ): 0.467.

Embodiment 3

[0029] This embodiment is basically the same as Example 1, the difference being that ethylene 2750L (volume under standard conditions), solvent naphtha hexane 3800g, TiO 2 Mass 103g, using aluminum alkyl / TiCl 4 Catalyst, set the temperature of the reactor at 65-66°C, rotate at 800r / min, react for 2 hours, and finally obtain a resin with a molecular weight of 5.38 million, a volume average particle size of 198.713 μm, a particle size distribution width (d90-d10) / d50: 1.214, and accumulation Density (g / cm 3 ): 0.497.

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Abstract

The invention relates to a preparation method of functionalized ultra-high molecular weight polyethylene resin. In the method, a modifying additive is added to solvent oil, and with ethylene as a raw material and under the effects of a catalyst and hydrogen, a low-pressure slurry method is employed to prepare the functionalized ultra-high molecular weight polyethylene resin. The method, compared with the prior art, is simple and is suitable for large-scale production. The resin is controllable in molecular weight and has uniform distribution in molecular weight. The modifying additive in the resin is uniformly mixed.

Description

technical field [0001] The invention belongs to the field of polymerization modification processing of polymer compounds, and relates to a preparation method of functional ultra-high molecular weight polyethylene resin, in particular to a method for preparing functional ultra-high molecular weight polyethylene resin through modification and addition in polymerization production. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) is known as "the magic plastic of the 21st century". And other aspects of poor performance, the production of a certain functional ultra-high molecular weight polyethylene resin has great significance. [0003] In polymer modification processing, physical blending and addition methods are usually used to achieve the purpose of modification processing, such as physical blending in raw materials, or subsequent addition in screw processing, but for nano-additives, It is easy to agglomerate or settle. For some blended materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/02C08F2/44C08K3/36C08K3/22C08K3/34C08K5/134C08K5/01D01F6/46D01F1/09
CPCC08F110/02C08K3/22C08K3/34C08K3/346C08K3/36C08K5/01C08K5/1345C08K2003/2206C08K2003/222C08K2003/2227C08K2003/2237C08K2003/2244C08K2003/2251C08K2201/011D01F1/09D01F6/46C08F2/44
Inventor 孙勇飞王新威王萍徐绍魁李建龙吴向阳
Owner SHANGHAI RES INST OF CHEM IND
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