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Black master batch of polythene pipes mixing special material for feeding water and preparation method thereof

A polyethylene pipe and black masterbatch technology, which is applied in the field of plastic coloring, can solve the problems such as the inability to meet the requirements of carbon black dispersion degree and sensory properties, and achieve the effects of good dispersion, accurate measurement and less addition amount.

Inactive Publication Date: 2008-02-13
SUZHOU GUOJIA POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing domestic black masterbatches for mixing special materials cannot meet the above-mentioned carbon black dispersion and sensory requirements, and must be imported from abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: prepare the black masterbatch 1# of 100 kilograms of water supply polyethylene pipe mixing special materials

[0024] (1) The weight of each component is:

[0025] Carbon black 35 kg

[0026] Antioxidant 1010 0.15 kg

[0027] HD2840UA 15kg

[0028] DHDA8940 49.35 kg

[0029] Calcium stearate 0.5 kg

[0030] Among them, carbon black is high-purity furnace carbon black, particle size 20nm, heavy metal toluene extract < 0.03%, total sulfur content < 0.1%, 325 mesh residue < 20ppm; antioxidant is 1010; medium density polyethylene is HD2840UA ; High-density polyethylene is DHDA 8940.

[0031] (2) Preparation method:

[0032] First, each component is added to the automatic weighing and feeding system. Multiple loss-in-weight continuous metering electronic scales will automatically add various materials into the double-rotor continuous mixer extruder with a rotation speed of 300-500rpm in strict accordance with the process ratio. , after fully kneading, sh...

Embodiment 2

[0034] Embodiment 2: prepare the black masterbatch 2# of 100 kilograms of water supply polyethylene pipe mixing special materials

[0035] (1) The weight of each component is:

[0036] Carbon black 42 kg

[0037] Antioxidant 1076 0.15 kg

[0038] HD2840UA 47.85 kg

[0039] HHM TR130 9.0 kg

[0040] Calcium stearate 1.0 kg

[0041] Among them, carbon black is high-purity furnace carbon black, particle size 25nm, heavy metal toluene extract < 0.03%, total sulfur content < 0.1%, 325 mesh residue < 20ppm; antioxidant is 1076; medium density polyethylene is HD2840UA ; High-density polyethylene is HHM TR130.

[0042] (2) preparation method: with embodiment 1.

[0043] The black masterbatch 2# of polyethylene pipe mixing special material for water supply prepared in this way, its carbon black content is 42%, and carbon black dispersibility reaches<2 grades, and melt index is 35 (21.6kg / 190 ℃).

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Abstract

The invention discloses black master batch special for the mixing of the water polyethylene pipe material. The formula is 32.7 to 45.4 percent of carbon black, 54 to 66 percent of carrier resin, 0.1 to 0.3 percent of antioxidant, and 0.5 to 0.1 percent of stearic acid salt. The preparation method is: the automatic weighing and feeding system is used; a plurality of materials strictly are matched according to the process with a plurality of weightless and continuous weighing electronic balance; the dual-rotor continuous densely refining and extruding machine group is directly added into; after mixing well, cutting, dispersing, extruding and palletizing, the black master batch can be made. The black master batch produced in the invention is characterized in the high concentration, the easiness of dispersion and the small amount of the addition; after the addition, the performance indicators, such as the dispersion degree of the carbon black, the chemical purity, the pressure resistance, the anti-aging performance, the process of mixed materials, and so on, suit and meet the requirements of the special mixing material of the water polyethylene pipe material.

Description

technical field [0001] The invention relates to the technical field of plastic coloring, in particular to a black masterbatch of a special compounding material for polyethylene pipes for water supply. [0002] The invention also relates to a preparation method of the black masterbatch of the polyethylene pipe compounding special material for water supply. Background technique [0003] 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, the State Bureau of Quality and Technical Supervision issued the national standard (GB / T13663-2000) of "polyethylene pipes for water supply" on November 21, 2000, which promoted the production and application of domestic polyethylene water supply pipes. [0004] Carbon black is widely used as a micronized filler in the production of polyethylene pipes. In addition to its coloring function, carbon black also provides the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/04C08L23/06B29C47/38B29B9/12C08K5/09B29C48/395
CPCB29C2947/9259B29C47/0023B29C47/0004B29C48/09B29C48/022B29C2948/9259
Inventor 陈信华耿仲德徐一敏
Owner SUZHOU GUOJIA POLYMER TECH
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