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Carbon black master batch, preparation method and application thereof

A carbon black masterbatch and carbon black technology, which is applied in the field of plastic coloring, can solve the problems such as the deterioration of pressure pipes and the formation of unsmooth surfaces, and achieve the effects of less addition, improved quality and service life, and good dispersibility.

Inactive Publication Date: 2013-04-03
SUZHOU GUOJIA POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the carbon black masterbatch for water pipes has a small carbon black particle size, a relatively high carbon black content is added to the polymer. If the carbon black is not well dispersed, in addition to forming a rough surface, the undispersed carbon existing in the pipe wall Black agglomerates can cause premature deterioration in pressure piping

Method used

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  • Carbon black master batch, preparation method and application thereof
  • Carbon black master batch, preparation method and application thereof
  • Carbon black master batch, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: prepare 100 kilograms and be specially used in the carbon black masterbatch A that water supply polyethylene (PE) pipe is useful

[0023] 1. The weight of each component is:

[0024]

[0025] The carbon black is high-purity furnace carbon black, the particle size of the carbon black pigment is 20nm; the toluene extract is less than 0.03%, the total sulfur content is less than 0.1%, and the residue on a 325-mesh sieve is less than 20ppm;

[0026] 2. Preparation method:

[0027] First add each component to the automatic weighing and feeding system, and use multiple loss-in-weight continuous metering electronic scales to strictly mix various materials according to the process, and automatically add them to the double-rotor continuous internal mixing extruder with a speed of 300-500 / min After fully kneading, shearing and dispersing, fall into the single-screw extruder to extrude, after cooling, pelletizing and dehydration, the resulting carbon black master...

Embodiment 2

[0031] Embodiment 2: prepare 100 kilograms and be specially used in the carbon black masterbatch B that water supply polyethylene (PE) pipe is useful

[0032] 1. The weight of each component is:

[0033]

[0034]

[0035] The carbon black is high-purity furnace carbon black, the particle size of the carbon black pigment is 25nm; the toluene extract is less than 0.03%, the total sulfur content is less than 0.1%, and the residue on a 325-mesh sieve is less than 20ppm;

[0036] 2. preparation method: with embodiment 1

[0037] The carbon black master batch B prepared in this way has a carbon black content of 42%, a carbon black dispersibility of <2 grades, and a melt index of 35 (21.6 kg and 190° C.).

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Abstract

The invention relates to a carbon black master batch in mixing ingredients for preparing a polyethylene (PE) tube, preparation method and application of the carbon black master batch. The carbon black master batch comprises the following components by weight: 32.2-50% of carbon black, 47.2-65% of carrier resin, 0.1-0.3% of antioxidant, and 0.5-2.5% of stearate. The carbon black pigment can be used for dyeing and ultraviolet light stabilizer to effectively prevent the PE tube from photo-oxidative degradation due to sunshine irradiation, thereby improving the quality and the service life of the PE material product. The carbon black master batch has the advantages of accurate measurement, good dispersibility, high concentration, low adding amount and the like. After the carbon black master batch is added, the requirements on the PE tube mixing ingredients for water supply can be met at the aspects of carbon black dispersity, chemical purity degree, pressure resistance, anti-aging and processing performance of the mixing ingredients, so that the PE tube for water supply can achieve the 50-year service life under the pressure resistant state.

Description

technical field [0001] The invention relates to the technical field of plastic coloring, in particular to a carbon black masterbatch for making special compounding materials for polyethylene (PE) pipes, and a preparation method and application thereof. Background technique [0002] Internationally, polyethylene pipes have been successfully used as pressure pipes for 50 years, and have been used in water and gas pipelines in many countries. In my country, since the National Bureau of Quality and Technical Supervision issued the national standard (GB / T13663-2000) on "Polyethylene (PE) Pipes for Water Supply" on November 21, 2000, the production and application of domestic polyethylene water supply pipes have been promoted. my country has introduced a production line with an annual production capacity of 250,000 tons of PE100 pipe material from Borealis, and other production lines are also under construction, but the carbon black masterbatch for the production of special mixing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/02C08K3/04C08K5/098B29B9/06B29C47/92C08J3/22B29C48/92
CPCB29C48/397B29C48/04B29B7/90B29B7/183B29B7/42B29B7/7461B29B7/726B29B7/28B29B7/823B29B9/06B29B9/12
Inventor 陈信华耿仲德徐一敏
Owner SUZHOU GUOJIA POLYMER TECH
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