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Modified coal ash for plastics

A coal ash modification technology, which is applied in the treatment of fibrous fillers and dyed polymer organic compounds, can solve the problems affecting the processing of composite materials and the physical properties of materials, uneven modification of coal ash, and complicated pretreatment processes. Achieve the effect of low cost, high production efficiency and stable product performance

Inactive Publication Date: 2017-11-10
NEW MATERIALS CO LTD SICHUAN MEETING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods have the following defects: the cost of the coupling agent is high, the pretreatment process is complicated, the time is long, and the efficiency is low; especially the use of highly corrosive acids and alkalis has very high requirements for equipment, and it also causes great harm to human health; Ash modification is uneven, affecting composite material processing and material physical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A kind of modified coal ash for plastics is selected by weight and adopts phenol and formaldehyde as raw materials, and sodium hydroxide, potassium hydroxide, barium hydroxide, etc. are used as catalysts to synthesize phenolic resin to make a weight percentage of 45 % phenolic resin aqueous solution: 30% by weight is mixed with vinyl chloride-vinyl acetate copolymer aqueous emulsion=65:100 to make a composite modifier, and then calculated with coal ash by weight ratio, coal ash: composite modification The consumption of agent=100:30 is modified coal ash to obtain plastics modified coal ash, and described vinyl chloride-vinyl acetate copolymer aqueous emulsion is with OP-10, sodium dodecylbenzene sulfonate, Sodium lauryl sulfate and polyoxyethylene ether are used as surfactants to form microemulsion emulsions, which are then polymerized with resin monomers and initiators.

[0027] A method for preparing the modified coal ash for above-mentioned plastics com...

Embodiment 2

[0034] Embodiment 2: A kind of modified coal ash for plastics, selected by weight, adopts phenol, formaldehyde as raw material, with sodium hydroxide, potassium hydroxide, barium hydroxide etc. as catalyst synthesis to obtain phenolic resin production weight percentage is 60 % of phenolic resin aqueous solution and 10% by weight of vinyl chloride-vinyl acetate-maleic anhydride copolymer aqueous emulsion are mixed at a weight ratio of 25:100 to make a composite modifier, and then mixed with coal ash in a weight ratio For, coal ash: the consumption of compound modifier=100:50 is modified coal ash to obtain the modified coal ash for plastics, and described vinyl chloride-vinyl acetate-maleic anhydride copolymer aqueous emulsion is based on OP- 10. Sodium dodecylbenzene sulfonate, sodium lauryl sulfate, and polyoxyethylene ether are used as surfactants to form microemulsion emulsions, and then resin monomers and initiators are polymerized.

[0035] A method for preparing the modif...

Embodiment 3

[0041] Embodiment 3: a kind of modified coal ash for plastics, choose water-soluble phenolic resin to make weight percentage and be 30% phenolic resin aqueous solution, weight percentage is 50% to be vinyl chloride-acrylate copolymer aqueous emulsion and Polyurethane aqueous emulsion. According to the phenolic resin aqueous solution: resin water emulsion = 1:1 to make a composite modifier, and then calculated with coal ash by weight ratio, coal ash: composite modifier = 100:10 to modify the coal ash The modified coal ash for plastics was obtained.

[0042] A method for preparing the modified coal ash for above-mentioned plastics comprises the following steps:

[0043]a Composite modifier preparation: select water-soluble phenolic resin by weight to make 30% by weight aqueous solution of phenolic resin: both 50% by weight are vinyl chloride-acrylate copolymer aqueous emulsion and polyurethane aqueous emulsion. Composite modifier is made by mixing phenolic resin aqueous soluti...

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Abstract

The invention relates to the field of fly ash modification, in particular to a modified coal ash for plastics and a preparation method thereof. The coal ash is modified by mixing a phenolic resin aqueous solution and a resin water emulsion to form a modifier, and the modification process is kneaded at room temperature. , kneading at elevated temperature, kneading at heat preservation, and cooling to obtain the product. The product has low cost, is firmly combined with plastics, can effectively reduce environmental pollution and improve the working environment, the preparation process is simple and easy to operate, the production cycle is short, and the production efficiency is high.

Description

technical field [0001] The invention relates to the field of fly ash modification, in particular to a modified coal ash for plastics and a preparation method thereof. Background technique [0002] my country is the country with the largest amount of coal production in the world, and it is also the country with the largest coal consumption. It produces a huge amount of coal ash every year, occupies a large amount of land, and aggravates the deterioration of the environment. The main components of coal ash are silica, aluminum oxide, ferric oxide and other substances, and some free water or chemically bound water is adsorbed, which can be used as a resource. Now coal ash is mainly used in the preparation of building materials, such as aerated bricks, lightweight wall materials, fly ash bricks, cement and other fields with low added value and low technical level. It has also been reported that coal ash is gradually used in the field of polymer material filling. However, due to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K9/04C08K3/36C08K3/22C09C1/40C09C3/10
Inventor 张建军黄勇何德水
Owner NEW MATERIALS CO LTD SICHUAN MEETING