Method for preparing exterior wall paint by utilizing paper mill sludge

A technology for papermaking sludge and exterior wall coating, applied in coating and other directions, can solve the problems of secondary environmental pollution, occupation of land, and high treatment costs, and achieve the effects of low utilization cost, short production cycle, and simple and easy preparation process.

Inactive Publication Date: 2016-10-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional treatment methods for papermaking sludge generally include incineration, landfill, deep sea disposal, etc.,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1: First add water to the disperser, then add 60g of 2% sodium carboxymethylcellulose aqueous solution, slowly add 3g iron yellow, 1g preservative A-04, 0.2g defoamer at a rate of 1000r / min Mixing agent XP-502E and 27g of waste corrugated box papermaking sludge with absolute dry weight, mechanically disperse for 30-50min, then slowly add 3g polyacrylate emulsion and continue mechanical dispersion for 15-20min, then the target exterior wall coating product can be obtained. , Its solid content is 40%.

Example Embodiment

[0017] Example 2: First add water to the disperser, then add 65g of 2% by mass sodium carboxymethylcellulose aqueous solution, slowly add 3g iron blue, 1g preservative A-04, 0.2g defoamer at a rate of 1500r / min Mixing agent XP-502E and 30g of waste corrugated cardboard box papermaking sludge, mechanically dispersing for 30-50min, then slowly adding 3.5g of polyacrylate emulsion and continuing mechanical dispersing for 15-20min, then the target exterior wall can be prepared For coating products, the solid content is 45%.

Example Embodiment

[0018] Example 3: First add water to the disperser, then add 55 g of 2% sodium carboxymethyl cellulose aqueous solution, and slowly add 3.5 g of iron blue and iron yellow and 1 g of preservative A at a rate of 2000 r / min -04, 0.2g defoamer XP-502E and 25g of papermaking sludge made from wheat straw, reed or wood pulp, stir, mechanically dispersed for 30-50min, then slowly add 2.5g of polyacrylate emulsion and continue By mechanically dispersing for 15-20 minutes, the target exterior wall coating product can be prepared with a solid content of 35%.

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PUM

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Abstract

The invention provides a method for preparing exterior wall paint by utilizing paper mill sludge. The exterior wall paint is prepared from the following components in a paint dispersion machine: 2.5 to 3.5 parts of a polyacrylate emulsion with the solid content being 50%, 55 to 65 parts of a sodium carboxymethyl cellulose aqueous solution with the solid content being 2%, paper mill sludge with the dry component being 25 to 30 parts, 2.5 to 3.5 parts of pigment, 0.2 part of a defoaming agent, and 1 part of a preservative; the preparation process of the exterior wall paint in the paint dispersion machine is that the sodium carboxymethyl cellulose solution is added into the paint dispersion machine, and the paper mill sludge, the pigment, the defoaming agent and the preservative are added in sequence at the revolving speed of 1000 to 2000 rpm (revolutions per minute), and stirred for 30 to 5o minutes; then the polyacrylate emulsion is added, and stirred for 15 to 20 minutes to obtain the exterior wall paint. The preparation method of the paint provided by the invention has the characteristics that the operation is simple and easy operation and the quality and performance of the paint are excellent, thereby providing an effective way for resource utilization of paper mill sludge waste.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a method for preparing exterior wall coatings by using sludge by-products produced in the wastewater treatment process of pulp and papermaking enterprises. Background technique [0002] Papermaking sludge is a kind of solid waste produced in the process of pulping and papermaking, which has the characteristics of complex composition, pollution and difficulty in disposal. The traditional treatment methods for papermaking sludge generally include incineration, landfill, and deep sea disposal, etc., but these methods have problems such as secondary pollution to the environment, land occupation, and high processing costs. With the increasingly stringent national requirements for industrial solid waste disposal, how to use an effective method to recycle papermaking sludge is an environmental protection problem that needs to be solved urgently in the current pulp and paper industr...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D101/28C09D7/12
CPCC09D7/40C09D133/04C08L1/286C08K11/005
Inventor 韩卿张拓王卫娟
Owner SHAANXI UNIV OF SCI & TECH
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