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Preparation method for high heat-resistant polystyrene foam plastic packaging material

A polystyrene and foam technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of poor heat resistance, aging resistance, low strength, etc., and achieve good thermal stability, uniform and stable cells. good effect

Inactive Publication Date: 2017-10-20
DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the polystyrene foam packaging material in the prior art has poor heat resistance, low strength, and is not resistant to aging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of a high heat-resistant polystyrene foam packaging material, comprising the following steps:

[0027] (1) Dissolve pyridine in absolute ethanol, then add nano sepiolite powder, stir and mix evenly, then transfer to a round bottom flask with a condenser tube, heat up to 60°C, reflux for 30min, and cool to 40°C after completion , filtered, the solid was washed several times with absolute ethanol, and dried in vacuum to obtain a white solid; wherein, the mass ratio of pyridine and nano sepiolite powder was 3:0.7;

[0028] (2) sodium hydroxide aqueous solution and acrylic acid are mixed to obtain a sodium acrylate aqueous solution with a mass concentration of 15%, and acrylamide is dissolved in water to obtain an acrylamide aqueous solution with a mass concentration of 20%; the sodium acrylate aqueous solution and acrylamide aqueous solution are mixed , then add the white solid prepared above, stir for 30 minutes, then add 1 / 2 emulsifier and 1 / 2 initia...

Embodiment 2

[0032] A preparation method of a high heat-resistant polystyrene foam packaging material, comprising the following steps:

[0033] (1) Dissolve pyridine in absolute ethanol, then add nano sepiolite powder, stir and mix evenly, then transfer to a round bottom flask with a condenser tube, heat up to 80°C, reflux for 50min, and cool to 40°C after completion , filtered, the solid was washed several times with absolute ethanol, and dried in vacuum to obtain a white solid; wherein, the mass ratio of pyridine and nano sepiolite powder was 3:1.5;

[0034] (2) sodium hydroxide aqueous solution and acrylic acid are mixed to obtain a sodium acrylate aqueous solution with a mass concentration of 15%, and acrylamide is dissolved in water to obtain an acrylamide aqueous solution with a mass concentration of 20%; the sodium acrylate aqueous solution and acrylamide aqueous solution are mixed , then add the white solid prepared above, stir for 30 minutes, then add 1 / 2 emulsifier and 1 / 2 initia...

Embodiment 3

[0038] A preparation method of a high heat-resistant polystyrene foam packaging material, comprising the following steps:

[0039] (1) Dissolve pyridine in absolute ethanol, then add nano sepiolite powder, stir and mix evenly, then transfer to a round bottom flask with a condenser tube, heat up to 65°C, reflux for 35min, and cool to 40°C after completion , filtered, the solid was washed several times with absolute ethanol, and dried in vacuum to obtain a white solid; wherein, the mass ratio of pyridine and nano sepiolite powder was 3:0.9;

[0040](2) sodium hydroxide aqueous solution and acrylic acid are mixed to obtain a sodium acrylate aqueous solution with a mass concentration of 15%, and acrylamide is dissolved in water to obtain an acrylamide aqueous solution with a mass concentration of 20%; the sodium acrylate aqueous solution and acrylamide aqueous solution are mixed , then add the white solid prepared above, stir for 30 minutes, then add 1 / 2 emulsifier and 1 / 2 initiat...

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Abstract

The invention discloses a preparation method for a high heat-resistant polystyrene foam plastic packaging material, which includes the following steps: ethanol solution of pyridine is firstly adopted to treat nanoscale sepiolite powder under certain conditions; the treated nanoscale sepiolite powder is then mixed with solution prepared from polyacrylamide, and thereby polyacrylamide-coated nanoscale sepiolite powder is prepared by a two-step polymerization method; finally, polystyrene, polyvinyl alcohol, polyvinylpyrrolidone and deionized water are mixed and heated for dissolution, and thereby mixed solution A is obtained; dispersant, foaming agent, antioxidant, heat stabilizer and deionized water are mixed, added with the prepared modified sepiolite powder and stirred to be uniformly dispersed, and thereby mixed solution B is obtained; the mixed solution A and the mixed solution B are uniformly mixed and then foamed n a mold, and thereby the high heat-resistant polystyrene foam plastic packaging material is obtained. The packaging material has excellent mechanical properties and good heat resistance, and is low in preparation cost.

Description

Technical field: [0001] The invention relates to the field of plastic packaging materials, in particular to a preparation method of a highly heat-resistant polystyrene foam packaging material. Background technique: [0002] Polystyrene material was invented and synthesized by E. Simon in 1839. The United States began mass production after 1925. The advantages of this material are cheap price, good surface finish, good impact resistance for inner packaging matched with cartons, easy injection molding, small specific gravity, and light weight. . At present, the output of polystyrene produced with styrene as raw material has jumped to the second place in the world's foam plastics, but with the development of packaging scale materials, polystyrene materials are brittle, poor in heat resistance, static, not easy to degrade, mechanical Poor performance limits its application in the field of packaging materials. [0003] As an inorganic material, sepiolite is a magnesium-rich f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L29/04C08L39/06C08K9/04C08K9/10C08K7/26C08F220/56C08F220/06C08F2/44B65D65/02
CPCB65D65/02C08F2/44C08F220/56C08K2201/003C08K2201/011C08L25/06C08L2201/08C08L2203/14C08L2205/035C08F220/06C08L29/04C08L39/06C08K9/04C08K9/10C08K7/26
Inventor 王海燕
Owner DONGGUAN JIAQIAN NEW MATERIAL TECH CO LTD