Polyethylene color masterbatch and preparing method thereof

A technology of polyethylene and high-density polyethylene, applied in the field of carbon black masterbatch for polyethylene pressure pipes and its preparation, can solve the problems affecting the promotion and application of PE100 black compounding materials, and the high price of PE100 carbon black masterbatch, and achieve excellent processing characteristics , low cost, low cost effect

Active Publication Date: 2008-03-26
BEIJING BEIHUA GAOKE NEW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high price of foreign PE100 carbon black masterbatch has seriously affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Carbon black (brand: ELFTEX 254, average primary particle size < 25nm, produced by Cabot Corporation of the United States, 325 mesh residue < 20ppm), high-density polyethylene resin (brand 2200J, Sinopec Yanshan Petrochemical Co., Ltd. production), antioxidant 1010 (tetra[beta-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester, i.e. tetraerythritol ester, produced by Ciba Refining Chemicals in Switzerland) put into banburying In the machine, after melting and blending, the material is discharged and granulated to obtain the polyethylene color masterbatch of the present invention, and the banburying temperature is 150°C. Among them, 100 parts by weight of high-density polyethylene, 65 parts by weight of carbon black, and 0.2 parts by weight of antioxidant.

[0033] The high-density polyethylene pipe base material (brand YJH041, produced by Sinopec Shanghai Petrochemical Co., Ltd.) and the color masterbatch prepared above are simply mechanically ble...

Embodiment 2

[0036] The production technology of polyethylene carbon black masterbatch is identical with embodiment 1. The specific formula of the color masterbatch is: the total number of parts of high-density polyethylene resin is 100 parts by weight, of which high-density polyethylene resin (brand 2200J, produced by Sinopec Yanshan Petrochemical Co., Ltd.) and high-density polyethylene resin (brand 6380M, China Petrochemical Yanshan Petrochemical Co., Ltd. production) each 50 parts by weight, the parts of carbon black (same as Example 1) are changed into 40 parts by weight, antioxidant 1010 (same as Example 1) 0.2 parts by weight.

[0037] The production of the pipe was the same as that of Example 1 except that the weight ratio of the high-density polyethylene pipe base material to the color masterbatch was changed to 100:8.5.

[0038] The specific performance test results are shown in Table 1.

Embodiment 3

[0040] The production technology of polyethylene carbon black masterbatch is identical with embodiment 1. The concrete formula of look masterbatch is: the high-density polyethylene resin adopting the trade mark that Sinopec Yanshan Petrochemical Co., Ltd. produces is the high-density polyethylene resin of 1600J, wherein the parts of carbon black (same as embodiment 1) are changed into 85 parts by weight, anti- Oxygen agent 1010 (same as embodiment 1) 0.2 parts by weight.

[0041] The production of the pipe is the same as that in Example 1 except that the weight ratio of the high-density polyethylene pipe base material to the color masterbatch is changed to 100:5.

[0042] The specific performance test results are shown in Table 1.

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Abstract

The present invention is one kind of polyethylene premix and its preparation process. The polyethylene premix includes high density polyethylene resin in 100 weight portions, carbon lack of average grain size not greater than 25 nm in 35-100 weight portions, fluorocarbon polymer in 0-10 weight portions, and antioxidant of hindered phenol and/or phosphite in 0-15 weight portions. The polyethylene premix with high carbon black content is prepared through banburing and smelting. It may be mixed with polyethylene matrix to obtain mixed material with excellent carbon black dispersivity, excellent ultraviolet ageing resistance, high heat and oxygen stability, good machining performance, low cost and high performance.

Description

technical field [0001] The invention relates to a polyethylene color masterbatch, in particular to a carbon black masterbatch for polyethylene pressure pipes and a preparation method thereof. Background technique [0002] PE100 is currently the grade of polyethylene pipe resin with the highest pressure rating in the world. The pipes made of this resin can be used for at least 50 years under the ring stress of 10MPa. Under outdoor conditions such as transportation, storage, and construction, natural-color polyethylene pipes will age and degrade, and their mechanical properties will decline. ISO standards and national standards stipulate that the production of PE100 gas pipes and water supply pipes must use black compounding materials. The carbon black used in the compounding should be carbon black with a particle size of less than 25nm, the carbon black content should not be less than 2.0%, and the carbon black dispersibility should be less than or equal to grade 3. [0003]...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K5/524C08L27/12C08K3/04
Inventor 程红原国旺王卓刘月英
Owner BEIJING BEIHUA GAOKE NEW TECH
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