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Organic modified rectorite/EVA composite foam material and preparation method and application thereof

A technology of composite foam and rectorite, which is applied in the field of organic modified rectorite/EVA composite foam material and its preparation, can solve the problems of large deformation of materials and influence on mechanical properties, etc., and achieves high strength, easy operation and high cost performance. Effect

Active Publication Date: 2015-11-11
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the expansion ratio of EVA is high, the deformation of the material will be large, and the mechanical properties will be greatly affected.

Method used

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  • Organic modified rectorite/EVA composite foam material and preparation method and application thereof
  • Organic modified rectorite/EVA composite foam material and preparation method and application thereof
  • Organic modified rectorite/EVA composite foam material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Add 3 g of rectorite (REC) and 100 mL of deionized water into a round bottom flask, place it in a 100W ultrasonic cleaner for 10 minutes of ultrasonic dispersion to obtain a REC suspension.

[0033] (2) Then add 0.5g didodecyldimethylammonium bromide to the REC suspension and stir the reaction at 80°C for 4h. After the reaction, cool to room temperature and wash with deionized water for several times until silver nitrate Detection of Br-free - exist, vacuum-dried at 80°C for 24 hours to obtain organically modified rectorite (OREC), which was packed into bags for later use.

[0034] (3) Mix 3gOREC and 300gEVA uniformly for 5min in an internal mixer at a temperature of 120°C and a speed of 50rpm / min;

[0035] (4) Then add 7.5g foaming agent (AC), 2.7g crosslinking agent (DCP), 1.2g stearic acid (St), 1.8g zinc stearate (ZnSt), 2.1g auxiliary foaming agent (ZnO ) into the internal chamber of the internal mixer at a temperature of 120°C and a rotation speed of 25 rpm / ...

Embodiment 2

[0040] (1) Add 6g of rectorite (REC) and 100mL of deionized water into a round bottom flask, place it in a 100W ultrasonic cleaner for 10 minutes of ultrasonic dispersion to obtain a REC suspension.

[0041] (2) Then add 1g didodecyldimethylammonium bromide to the REC suspension and stir the reaction at 80°C for 4 hours. Br - exist, vacuum-dried at 80°C for 24 hours to obtain organically modified rectorite (OREC), which was packed into bags for later use.

[0042] (3) 6gOREC and 300gEVA were uniformly mixed for 5min in an internal mixer at a temperature of 120°C and a speed of 50rpm / min;

[0043] (4) Then add 7.5g foaming agent (AC), 2.7g crosslinking agent (DCP), 1.2g stearic acid (St), 1.8g zinc stearate (ZnSt), 2.1g auxiliary foaming agent (ZnO ) into the internal chamber of the internal mixer at a temperature of 120°C and a rotation speed of 25 rpm / min and continue mixing for 15 minutes to obtain a mixture;

[0044] (5) The mixture obtained in step (4) is quickly transf...

Embodiment 3

[0048] (1) Add 9 g of rectorite (REC) and 100 mL of deionized water into a round-bottomed flask, place it in a 100W ultrasonic cleaner for 10 minutes of ultrasonic dispersion to obtain a REC suspension.

[0049](2) Then add 1.5g didodecyldimethylammonium bromide to the REC suspension and stir the reaction at 80°C for 4h. After the reaction, cool to room temperature and wash with deionized water for several times until silver nitrate Detection of Br-free - exist, vacuum-dried at 80°C for 24 hours to obtain organically modified rectorite (OREC), which was packed into bags for later use.

[0050] (3) Mix 3gOREC and 300gEVA uniformly for 5min in an internal mixer at a temperature of 120°C and a speed of 50rpm / min;

[0051] (4) Then add 7.5g foaming agent (AC), 2.7g crosslinking agent (DCP), 1.2g stearic acid (St), 1.8g zinc stearate (ZnSt), 2.1g auxiliary foaming agent (ZnO ) into the internal chamber of the internal mixer at a temperature of 120°C and a rotation speed of 25 rpm...

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Abstract

The invention discloses an organic modified rectorite / EVA composite foam material and preparation method and application thereof. Organic modification is conducted on rectorite (REC) through dispersions of didodecyldimethylammonium bromide, the organic modified rectorite (OREC) is obtained, and an OREC / EVA composite foam material is obtained by inserting EVA macromolecular chains into an OREC slice layer through a melt intercalation layer. Compared with a traditional EVA foam material, the density of the material is lowered by 12.1% to 34.8%, and the tear strength can still be improved by 10% to 40.5%, so that the foaming material is light in mass and high in strength and has remarkable social and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of polymer composite foam preparation, and in particular relates to an organically modified rectorite / EVA composite foam material and its preparation method and application. Background technique [0002] EVA has low melting point, non-toxicity, excellent plasticity and processability, light weight after foaming, easy coloring, aging resistance and chemical corrosion resistance, and good flexibility, elasticity, stress crack resistance, shock absorption and other properties. , and are widely used in sports shoe materials, foamed floors, cushions, gymnastics mats, life-saving materials, sports equipment, heat-sealed packaging, wireless binding, cable insulation, and sound insulation and shock absorption of automobile bodies. It has developed rapidly in recent years. Domestic EVA Manufacturers of foam material products are mainly concentrated in Fujian, Guangdong and Zhejiang. However, when the expansion ratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K13/06C08K9/04C08K3/34C08K5/14C08K5/09C08K5/098C08K3/22C08J9/10
CPCC08J9/103C08J2203/04C08J2323/08C08K3/22C08K3/34C08K5/09C08K5/098C08K5/14C08K9/04C08K13/06C08K2003/2296C08L2203/14C08L23/0853
Inventor 郑玉婴邱洪峰林锦贤
Owner FUZHOU UNIV
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