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Black pigment for black card paper production and preparation method thereof

A technology of black pigment and black cardboard, which is applied in the field of papermaking, can solve problems such as difficult to meet the use requirements, color difference of black cardboard, and high cost, and achieve the effects of less pollution, cheap price and good air permeability

Inactive Publication Date: 2018-10-12
QUFU SANRANG COAL WATER SLURRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of carbon black is another method of black pigment production, but the cost of production using carbon black will be significantly higher than that of using coal slime. In addition, due to the characteristics of carbon black itself, the color of the produced black cardboard is different, which is not easy to meet the use requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The black pigment raw material composition and weight parts of a kind of black cardboard production of the present invention are: 28% of coal water slurry, 25% of kaolin, 35.5% of deionized water, 4% of hydroxybutadiene latex, 3% of water-based acrylic resin, polyethylene Glycol 0.5%, propylene glycol butyl ether 4%.

[0014] The preparation method of black pigment for black cardboard production of the present invention comprises the following steps:

[0015] 1) Mixing: Add the raw materials and additives together into the buffer tank and mix them at a low speed of 200 rpm for 4 minutes. The raw materials are 28% of coal water slurry and 25% of kaolin; the additives are 35.5% of deionized water , 4% of hydroxybutadiene latex, 3% of water-based acrylic resin, 0.5% of polyethylene glycol, and 4% of propylene glycol butyl ether to obtain the mixed material liquid I;

[0016] 2) Grinding: add the mixed material liquid I obtained in step 1) into a grinder and grind until th...

Embodiment 2

[0019] A black pigment for black cardboard production of the present invention is composed of the following components in parts by weight: 25% of coal water slurry, 27% of kaolin, 34% of deionized water, 4.5% of hydroxybutadiene latex, 4% of water-based acrylic resin, poly Ethylene glycol 0.5%, propylene glycol butyl ether 5%.

[0020] The preparation method of black pigment for black cardboard production of the present invention comprises the following steps:

[0021] 1) Mixing: Add the raw materials and additives together into the buffer tank and mix them at a low speed of 200 rpm for 4 minutes. The raw materials are 25% of coal water slurry and 27% of kaolin; the additives are 34% of deionized water. 4.5% of hydroxybutadiene latex, 4% of water-based acrylic resin, 0.5% of polyethylene glycol, and 5% of propylene glycol butyl ether, to obtain the mixed material liquid I;

[0022] 2) Grinding: add the mixed material liquid I obtained in step 1) into a grinder and grind until...

Embodiment 3

[0025] A black pigment for black cardboard production according to the present invention is composed of the following components in parts by weight: 27% of coal water slurry, 28% of kaolin, 28.5% of deionized water, 4.5% of hydroxybutadiene latex, 4% of water-based acrylic resin, poly Ethylene glycol 1%, propylene glycol butyl ether 7%.

[0026] The preparation method of black pigment for black cardboard production of the present invention comprises the following steps:

[0027] 1) Mixing: Add the raw materials and additives together into the buffer tank for mixing, and stir at a low speed of 200rpm for 4 minutes. The raw materials are 27% of coal water slurry and 28% of kaolin; the additives are 28.5% of deionized water , 4.5% of hydroxybutadiene latex, 4% of water-based acrylic resin, 1% of polyethylene glycol, and 7% of propylene glycol butyl ether, to obtain the mixture liquid I;

[0028] 2) Grinding: Add the mixed material liquid I obtained in step 1) into a grinder and ...

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PUM

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Abstract

The invention discloses a black pigment for black card paper production, the black pigment comprises the following components in parts by weight: 25-29% of water coal slurry, 22-28% of kaolin, 27-41.5% of deionized water, 4-5% of carboxyl styrene latex, 3 to 5% of water-based acrylic resin, 0.5 to 1% of polyethylene glycol and 3 to 8% of propylene glycol butyl ether; a preparation method of the black pigment for black card paper production is as follows: adding raw materials and auxiliary agents together into a buffer bucket for mixing, adding an obtained mixed material liquid I into a grinderfor grinding until the proportion of particles with the particle size of less than or equal to 2 mum is greater than or equal to 55%, filtering an obtained material liquid II, strongly shearing filtrate by a shear pump, then entering a homogenization and ripening tank for homogenization and ripening for 3 to 4 hours, and then entering a finished product tank to form a finished product. The preparation method solves the environmental protection risk of a black pigment production enterprise, has the characteristics such as no sewage discharge, less pollution, safety and environmental friendliness, and black card paper produced by using the black pigment has good color fixing property, no color fading, good gas permeability, low price, and very broad market prospect.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a black pigment for black cardboard production and a preparation method thereof. Background technique [0002] The traditional black pigment production method is to use coal slime or carbon black as raw material. Coal slime is a low-value product of coal washing plants with high water content. The production cost of coal slime is relatively low, but the dust and waste water generated during the transportation and storage of coal slime will bring great harm to black pigment manufacturers. Environmental pressure. The use of carbon black is another method of black pigment production, but the cost of production using carbon black will be significantly higher than that of using coal slime. In addition, due to the characteristics of carbon black itself, the color of the produced black cardboard is different, which is not easy to meet the use requirements. . Contents...

Claims

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Application Information

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IPC IPC(8): D21H21/28D21H17/68D21H17/67D21H17/34D21H17/37D21H17/06D21H17/53
CPCD21H17/06D21H17/34D21H17/37D21H17/53D21H17/67D21H17/68D21H21/28
Inventor 郑亮刘宏韬
Owner QUFU SANRANG COAL WATER SLURRY CO LTD
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