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Carrier catalyst for producing wear-resistant and antistatic polyolefin, preparation method and application thereof

A catalyst and polyolefin technology, which is applied in the production of wear-resistant and antistatic polyolefin carrier catalyst and its preparation field, can solve the problem of few registrations, the indistinct advantages of nanomaterials, and the impact on the industrial application prospects of polyolefin nanocomposites, etc. problems, to achieve the effect of easy flow and transmission, and avoid sticking to the kettle

Active Publication Date: 2021-02-05
SHANGHAI RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the purpose of previous research is mainly to use nano-inorganic materials as catalyst carriers to give full play to their loading characteristics, and the advantages of nano-materials in polyolefin materials are not obvious.
At the same time, few studies have focused on problems in the process of industrial application, such as the particle appearance of polyolefin composite materials. These problems affect the industrial application prospects of polyolefin nanocomposites and are key issues that need to be solved urgently. very few reports

Method used

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  • Carrier catalyst for producing wear-resistant and antistatic polyolefin, preparation method and application thereof
  • Carrier catalyst for producing wear-resistant and antistatic polyolefin, preparation method and application thereof
  • Carrier catalyst for producing wear-resistant and antistatic polyolefin, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0157] Preparation of Ziegler-Natta composite carrier catalyst system;

Embodiment 1a

[0159] Preparation of multi-dimensional carbon material and fiber material composite carrier catalyst:

[0160] Under the protection of nitrogen, add 4g of anhydrous magnesium chloride powder, 20ml of absolute ethanol and 50ml of n-heptane into a stirred reaction flask, and stir at 100°C until the magnesium chloride dissolves. Then add the following multi-dimensional inorganic materials: 4g flake graphite (Graphite), 4g hydroxyl modified carbon fiber powder (CF) and fully stir for 2 hours. Then the temperature was lowered to room temperature to obtain the multidimensional inorganic composite MgCl2·Graphite·CF·xETOH. Add a certain amount of TEA (triethylaluminum) (Al / Mg=3) to the above system, react at 60°C for 2 hours, add 50ml of n-heptane to wash 4 times to remove unreacted TEA, and dry under vacuum , to obtain the carrier Mg-S with good fluidity.

[0161] Take the carrier Mg-S, add 50ml n-heptane and a certain amount of TiCl 4 , react at 60°C for 2h, add 50ml of n-heptan...

Embodiment 1b

[0165] The same method as in Example 1a was used to prepare the composite carrier catalyst, except that the multidimensional inorganic material was changed to 4g conductive carbon black and 4g glass fiber powder. Slurry polymerization was carried out following the same procedure as Example 2a. The calculated catalytic activities and properties of the polyethylene resins tested according to the above test methods are listed in Table 1.

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Abstract

The invention relates to a supported catalyst for producing wear-resistant anti-electrostatic polyolefins and a preparation method and application of the supported catalyst. According to the catalyst, an active ingredient is loaded to a composite support, and is a transition-metal catalyst; the composite support comprises a first ingredient and a second ingredient, wherein the first ingredient is a layered-structured graphite carbon material or a modified product thereof, and the second ingredient is a chain-shaped or rod-shaped structured fibrous material or a modified product thereof; the weight ratio of the first ingredient to the second ingredient is (0.01 to 100): 1, and the weight ratio of the sum of the weight of the first ingredient and the weight of the second ingredient to the weight of the active ingredient is (0.01 to 100): 1. Compared with the prior art, the catalyst provided by the invention can be used for polymerizing to obtain full-density polyolefin products, and the products are adjustable in molecular weight and have the maximum viscosity average molecular weight of 10,000,000. According to polyolefin composite materials prepared by the method, mechanical properties are substantially improved, characteristics such as excellent wear resistance, impact resistance and permanent anti-electrostatic property, high conductivity and small coefficient of friction are presented, and the aim that high-performance polyolefin composite materials are lightweight is achieved.

Description

technical field [0001] The invention relates to a composite carrier catalyst composed of multi-dimensional carbon materials and fiber materials, in particular to a carrier catalyst for producing wear-resistant and antistatic polyolefin, its preparation method and application. Background technique [0002] Polyolefin is the polymer material variety with the largest output and widest application, and is an indispensable basic raw material for national life and modern national defense. The emergence of nanotechnology provides a broad space for the improvement of the performance of polyolefin materials. In nanocomposites, due to the uniform dispersion of nanoscale inorganic dispersed phases in polymers, there are nanoscale effects, large specific surface areas, and strong interfacial interactions. Its performance is often significantly better than that of conventional composite materials with the same components, and it has the advantages of high specific strength, strong design...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F10/00C08F110/02C08F210/16C08F110/06C08F110/08C08F4/02
CPCC08F4/02C08F10/00C08F110/02C08F110/06C08F110/08C08F210/16
Inventor 张乐天叶晓峰肖明威奚媛媛张振飞
Owner SHANGHAI RES INST OF CHEM IND