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Expandable polystyrene resin bead with high color strength and high light fastness and preparation process thereof

A technology of expandable polystyrene and color strength, which is applied in the field of high color strength and high light fastness color expandable polystyrene resin beads and its preparation, and can solve the problem of affecting the stability of the suspension system and the influence of the kettle Problems such as low utilization rate and production efficiency can achieve the effect of stable and easy-to-control polymerization system, bright and stable color, and high color strength

Active Publication Date: 2012-10-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the cumbersome process and high cost of this method, it has been eliminated
At the same time, the addition of a large amount of inorganic pigment slurry in the patent affects the stability of the suspension system, which can only be realized at a high water-to-oil ratio (above 3.8), which affects the utilization rate of the kettle and the production efficiency is low

Method used

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  • Expandable polystyrene resin bead with high color strength and high light fastness and preparation process thereof
  • Expandable polystyrene resin bead with high color strength and high light fastness and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1, preparation of finely dispersed organic pigment paste with high color strength:

[0032] In a three-necked flask with a stirring device, add 100 g of a 5% sodium dodecylbenzenesulfonate aqueous solution, then add 26 g of Pigment Red 168 in the aqueous solution, stir and disperse at a high speed for 0.5 hours, then transfer to a grinder to grind for 5 hour to obtain a red pigment paste with a particle size of about 1 μm;

[0033] Step 2, preparation of monomers containing finely dispersed organic pigments with high color strength:

[0034] Add 20g of butyl acrylate monomer into a three-necked flask with a stirring device, add 0.2g of dihexadecyltrimethylammonium bromide under stirring, and slowly add 0.75g of appealing red pigment color paste dropwise after dissolving, and drop completely Then stir rapidly for 1 hour to realize the phase transition of the color paste, and prepare a butyl acrylate dispersion containing a highly dispersible red pigment;

[0035] ...

Embodiment 2

[0040] Step 1, preparation of finely dispersed organic pigment paste with high color strength:

[0041] Add 100g of 1% sodium lauryl sulfate aqueous solution into a three-necked flask with a stirring device, then add 21g of black pigment pre-dispersed black-SMS into the aqueous solution, stir and disperse at high speed for 0.5 hours, then transfer to a grinder Grind for 5 hours to obtain a black pigment paste with a particle size of about 1 μm;

[0042] Step 2, preparation of monomers containing finely dispersed organic pigments with high color strength:

[0043] Add 110g of styrene monomer into a three-necked flask with a stirring device, add 0.66g of dodecyltrimethylammonium bromide under stirring, slowly add 1.55g of appealing black pigment paste after dissolving, and quickly Stir for 1.5 hours to realize the phase transition of the color paste, and prepare a styrene dispersion containing a highly dispersible black pigment;

[0044] Step 3, preparation of colored expandab...

Embodiment 3

[0049] Step 1, preparation of finely dispersed organic pigment paste with high color strength:

[0050] Add 100g of ethoxylated alkyl sodium sulfate aqueous solution with a concentration of 8% into a three-necked flask with a stirring device, then add 30g of phthalocyanine blue in the aqueous solution, stir and disperse at high speed for 0.8 hours, then transfer to a grinder and grind for 7.5 hour to obtain a blue pigment paste with a particle size of about 1 μm;

[0051] Step 2, preparation of monomers containing finely dispersed organic pigments with high color strength:

[0052] Add 100g of styrene monomer into a three-necked flask with a stirring device, add 0.8g of octadecyltrimethylammonium chloride under stirring, and slowly add 1.65g of the blue pigment paste after dissolving. Stir rapidly for 1.5 hours to realize the phase transition of the color paste, and prepare a styrene dispersion containing a highly dispersible blue pigment;

[0053] Step 3, preparation of col...

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Abstract

The invention discloses an expandable polystyrene resin bead with high color strength and high light fastness and a preparation process thereof. The expandable polystyrene resin bead with high color strength and high light fastness is characterized in that resin beads prepared by the preparation process are uniform in particle size and have bright and controllable color, high color strength and high light fastness, and foamed products made of the resin beads are uniform in color and cell density and have structures with closed cells which are high in strength. The preparation process includes steps of preparing color paste with pigment particle size about 1 micrometer by dispersing and grinding techniques, then obtaining monomers containing precisely dispersed organic pigment with high color strength by phase transformation of the color paste, and finally initiating the colored monomers to complete polymerization. The expandable polystyrene resin bead with high color strength and high light fastness and the preparation process thereof have the advantages that the pigment prepared by the preparation process is fine and uniform in particle size and easy to develop, can disperse among the monomers precisely, and can be compatible with foaming agents and polymers well; and further, products with a small quantity of the pigment have satisfied brilliance and color strength, a polymerized system is stable and controllable without obvious inhibition, and reactions can be completed within a normal time.

Description

technical field [0001] The present invention relates to the preparation of finely dispersed organic pigment color paste with high color strength and the monomer preparation of finely dispersed organic pigment with high color strength, especially relates to uniform particle size, bright and controllable high color strength and high light fastness. Expanded polystyrene resin beads and a preparation method thereof. Background technique [0002] 2011 is the first year of the "Twelfth Five-Year Plan". In the outline, energy conservation and emission reduction are still regarded as binding indicators for national economic and social development. Among them, building energy conservation has become a key area, and an action plan for green and energy-saving buildings has been drafted. It is planned that by 2015, the proportion of building energy conservation will reach 50%. At the same time, high-performance composite materials and advanced polymer materials are listed as developmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/08C08L25/14C08J9/20C08F212/08C08F2/44C08J3/205
Inventor 李杨申凯华韩冰胡细根孙彪王艳色王玉荣
Owner DALIAN UNIV OF TECH
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