High-concentration carbon black master batch for polyethylene geomembrane

A polyethylene and geomembrane technology, applied in the field of polyethylene carbon black master, can solve the problems of reduced stress cracking resistance, low strength, low melt index, etc., and achieve stress concentration, high shear strength, and narrow particle size distribution Effect

Inactive Publication Date: 2015-11-04
TIANJIN YISANYOU MASTERBATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low strength of LDPE, adding this color masterbatch to polyethylene geomembrane will greatly reduce the tensile strength of geomembrane
2) More importantly, the matrix resin only considers the selection of a single polyethylene resin with good flow, ignoring the stress cracking resistance of the geomembrane after adding it, which leads to a significant decline in the stress cracking resistance of the final product and cannot meet the requirements of more than 50 years. service life
3) The content of carbon black in the carbon black masterbatch is low, generally not more than 40%, which cannot meet the needs of geomembrane manufacturers
4) Consider the impact of carbon black particle size on the performance of the final product. If the carbon black particle size is too large, it will cause a large amount of stress concentration in the geomembrane and reduce the service life of the product
5) Carbon black masterbatch does not add antioxidants or does not have a reasonable antioxidant system (such as using only a single antioxidant), which cannot meet the requirements of the final product oxidation induction time greater than 100min and thermal oxygen aging resistance and UV aging resistance
[0005] The high-density polyethylene-based carbon black...

Method used

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  • High-concentration carbon black master batch for polyethylene geomembrane
  • High-concentration carbon black master batch for polyethylene geomembrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] High-density polyethylene (brand: T60-800, produced by Zhongsha Tianjin Petrochemical Co., Ltd.), linear low-density polyethylene (brand: 7042, produced by Daqing Petrochemical), carbon black (brand: XPB366, produced by Degussa Company, primary Particle size 22 ± 2nm), antioxidant 1076 (brand CHINOX1076, produced by Double Bond Chemical Co., Ltd.), antioxidant 618 (brand: CHINOX618, produced by Double Bond Chemical Co., Ltd.), fluorocarbon polymer (brand: 5920A , produced by 3M Company in the United States) according to high-density polyethylene 23%, linear low-density grade ethylene 10%, carbon black 55%, antioxidant 10765%, antioxidant 6185%, fluorocarbon polymer PPA5920 (vinylidene fluoride, six Fluoropropylene, tetrafluoroethylene copolymer) 2% ratio, add in the banbury mixer, banbury to 130 ℃, discharge; through single-screw extruder granulation, extruding temperature 180 ℃, make the present invention Polyethylene masterbatch.

[0028] The prepared polyethylene co...

Embodiment 2

[0031] Color masterbatch production, film blowing process are the same as in Example 1, and the specific formula is as follows: high-density polyethylene (trademark: T50-2000, produced by Zhongsha Tianjin Petrochemical Co., Ltd.) 25%, linear low-density polyethylene (trademark: 0209AA , produced by Dushanzi Petrochemical) 12%, carbon black (brand: XPB367, produced by Degussa Company, primary particle size 22±2nm) 53%, antioxidant 2462, 2'-methylenebis(4-methyl- 6-tert-butylphenol) 1.5%, antioxidant 1010 (brand AT10, produced by Jinhai Yabao) 3.0%; antioxidant 168 (brand: AT168, produced by Jinhai Yabao) 4.5%, tetrafluoroethylene homopolymer 1 %.

Embodiment 3

[0033] The production of color masterbatch and film blowing process are the same as in Example 1, and the specific formula is as follows: high-density polyethylene (brand: 8920, produced by Daqing Petrochemical) 35%, linear low-density polyethylene (brand: 7042N, produced by Dushanzi Petrochemical) 7.92%, carbon black (brand: XPB367, produced by Degussa Company, primary particle size 22 ± 2nm) 50%, antioxidant 300 (brand CHINOX300, produced by Double Bond Chemical Co., Ltd.) 4%; antioxidant 168 ( 2,4-di-tert-butylphenyl)phosphite 2%, antioxidant DLTP (brand: CHINOX DLTP, produced by Double Bond Chemical Co., Ltd.) 3%, fluorocarbon polymer (vinylidene fluoride, hexafluoro Propylene copolymer) 0.08%.

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Abstract

The invention discloses a carbon black master batch for a polyethylene geomembrane. The carbon black master batch is composed of, by weight, 23%-40% of high-density polyethylene resin, 4%-12% of linear low-density polyethylene resin, 48%-55% of carbon black, 7%-10% of antioxygen and 0.05%-2% of fluorocarbon polymer. The master batch and a material special for the polyethylene geomembrane are used for conducting melt blending, and thus a geomembrane product capable of meeting GB-T 17643-2011, GM13, CJ 234 standard requirements can be obtained through squeezing or blowing. The geomembrane product prepared through the method has excellent performance on the aspects of tensile yield strength, anti-UV intensity and the like.

Description

technical field [0001] The invention relates to a polyethylene carbon black mother, in particular to a carbon black mother for polyethylene geomembrane. Background technique [0002] Polyethylene geomembrane is a new type of environmentally friendly material developed in recent years. Widely used in landfills, large-scale water conservancy projects and other fields, such as the Three Gorges Project, Qinshan Nuclear Power Project, Yangtze River Estuary Regulation Project, Yellow River Control Project, Huaihe River Control Project, Beijing-Hangzhou Grand Canal, large-scale Yellow River Diversion Plain Reservoir Project, and river flood control and emergency rescue, etc. . In recent years, with the introduction and development of high-speed railway technology in my country, polyethylene geomembrane products have been widely used in the construction of high-speed railways in my country as the sliding layer of CRTSII slab ballastless track for passenger dedicated railways. [0...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08L27/16C08L27/18C08K13/02C08K3/04C08K5/134C08K5/526C08J3/22B29B7/00
Inventor 国旺
Owner TIANJIN YISANYOU MASTERBATCH CO LTD
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