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Novel process for preparing emulsion paint through waste polystyrene plastic

A polystyrene plastic, waste polystyrene technology, applied in latex paints, rosin coatings, coatings, etc., can solve the problems of poor film-forming properties and adhesion of latex paints, strong irritation, high cost, and achieve good chemical Effects of stability and mechanical properties, low toxicity, and low production costs

Active Publication Date: 2015-03-25
EASTERN GANSU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned technologies, the organic solvents used have high cost, high toxicity, strong irritation and are difficult to be popularized and applied, and the prepared latex paint is poor in fineness, gloss, weather resistance, and scrub resistance due to poor film-forming performance and poor adhesion. There are defects in varying degrees in properties, acid and alkali resistance, stain resistance and antibacterial properties.

Method used

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  • Novel process for preparing emulsion paint through waste polystyrene plastic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 A kind of new technology that utilizes waste polystyrene plastics to prepare latex paint, comprises the following steps:

[0027] (1) Soak the waste polystyrene plastic in lime water with a temperature of 15°C and a mass concentration of 0.10% for 50 minutes, and take it out after mechanical stirring for 8 minutes, and then wash it twice with clean water to remove the stained oil and impurities. Get clean polystyrene plastic.

[0028] (2) Dry the clean polystyrene plastic at a temperature of 35°C or air-dry it and then pulverize it to obtain polystyrene particles with a particle size of 0.3 cm.

[0029] (3) Add 45 g of polystyrene particles to the heavy aromatic oil per 100 mL of heavy aromatic oil, stir and dissolve into a homogeneous phase, and then filter to obtain the filtrate.

[0030] (4) Add 8.5 g of polyvinyl acetate and 3.2 g of rosin to the filtrate successively for every 100 mL of filtrate, and then heat and stir at a temperature of 70°C until...

Embodiment 2

[0037] Example 2 A kind of new technology that utilizes waste polystyrene plastics to prepare latex paint, comprises the following steps:

[0038] (1) Soak the waste polystyrene plastic in lime water with a temperature of 25°C and a mass concentration of 0.10% for 60 minutes, take it out after mechanical stirring for 5 minutes, and then wash it twice with clean water to remove the stained oil and impurities. Clean polystyrene plastic.

[0039](2) Dry the clean polystyrene plastic at a temperature of 25°C or dry it and then pulverize it to obtain polystyrene particles with a particle size of 0.1 cm.

[0040] (3) Add 45 g of polystyrene particles to the heavy aromatic oil per 100 mL of heavy aromatic oil, stir and dissolve into a homogeneous phase, and then filter to obtain the filtrate.

[0041] (4) Add 8.5 g of polyvinyl acetate and 3.2 g of rosin to the filtrate successively for every 100 mL of filtrate, and then heat and stir at a temperature of 50° C. until the react...

Embodiment 3

[0048] Example 3 A kind of new technology that utilizes waste polystyrene plastics to prepare latex paint, comprises the following steps:

[0049] (1) Soak the waste polystyrene plastic in lime water with a temperature of 20°C and a mass concentration of 0.10% for 55 minutes, and take it out after mechanical stirring for 6 minutes, and then wash it twice with clean water to remove the stained oil and impurities. Get clean polystyrene plastic.

[0050] (2) Dry the clean polystyrene plastic at a temperature of 30°C or dry it and then pulverize it to obtain polystyrene particles with a particle size of 0.2 cm.

[0051] (3) Add 45 g of polystyrene particles to the heavy aromatic oil per 100 mL of heavy aromatic oil, stir and dissolve into a homogeneous phase, and then filter to obtain the filtrate.

[0052] (4) Add 8.5 g of polyvinyl acetate and 3.2 g of rosin to the filtrate successively for every 100 mL of filtrate, and then heat and stir at a temperature of 60° C. until ...

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Abstract

The invention relates to a novel process for preparing emulsion paint through waste polystyrene plastic. The process includes the following steps that (1) the waste polystyrene plastic is put into lime water to be soaked, stirred mechanically and taken out, then the treated waste polystyrene plastic is stirred and cleaned two times with clean water, and clean polystyrene plastic is obtained; (2) the clean polystyrene plastic is dried or aired and then smashed, and polystyrene particles are obtained; (3) the polystyrene particles are added to heavy aromatic oil to be stirred and dissolved to homogeneous phase and filtered, and filtering liquid is obtained; (4) polyvinyl acetate and rosin are sequentially added to the filtering liquid, then the mixture is heated and stirred till the reaction is completely finished, and base materials are obtained; (5) compound emulsifiers are added to deionized water, the mixture is fully and evenly stirred, modified nano SiO2, dibutyl phthalate, titanium dioxide and calcium silicate are sequentially added and stirred to be pasty, and color paste is obtained; (6) the base materials are injected into the color paste, the mixture is stirred, then grinding and filtering are conducted, and the white sticky emulsion paint is obtained. The novel process is simple in operation and excellent in performance of obtained products.

Description

technical field [0001] The invention relates to the field of waste resource recycling in fine chemical industry, in particular to a new process for preparing latex paint by using waste polystyrene plastics. Background technique [0002] Polystyrene plastic is a new type of material in the development of the modern plastics industry. It has the characteristics of light weight, hard quality, rigidity, electric thermal insulation, low moisture absorption and low price. It is one of the four general-purpose plastics today and is widely used in packaging, In the fields of waterproofing, heat insulation, shock absorption and catering industry, its output and consumption have leapt to the forefront of the world's foam plastics. Since polystyrene plastic is a one-time use material, the amount of waste is huge, and its chemical properties are stable, it is not easy to rot, and it is not easy to be degraded by microorganisms. If it is incinerated or buried, it will not only release so...

Claims

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Application Information

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IPC IPC(8): C09D125/06C09D131/04C09D193/04C09D7/12C09D5/02
CPCC08K2003/2241C09D125/06C08K2201/011C08L2201/08C08L2205/035C09D5/025C09D5/027C09D7/62C09D7/63C09D7/65C08L91/00C08L31/04C08L93/04C08K13/06C08K9/06C08K3/36C08K5/12C08K3/34
Inventor 胡浩斌朱治明
Owner EASTERN GANSU UNIVERSITY
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