EVA (Ethylene Vinyl Acetate) master batch as well as preparation method and application thereof

A technology of color masterbatch and luminous powder, which is applied in the field of polymer materials, can solve problems such as easy sedimentation, poor compatibility, and blackening of products, and achieve enhanced dispersion and bonding firmness, improving bonding fastness, and luminous intensity enhanced effect

Inactive Publication Date: 2017-05-17
JINJIANG XINBANG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the first preparation method, the luminous powder is directly added to the polymer material for plasticization, which may easily lead to the contact between the luminous powder and the metal, which will make the product black and affect its luminous performance.
Although the second preparation method can reduce the problem that the contact between the luminous powder and the metal will cause the product to blacken and affect its luminous performance, the precipitation during the polymerization process is very serious
Moreover, the long-lasting luminescent material has poor compatibility with organic matter and macromolecules, and has a high density. It is difficult to disperse between the luminous powder and the organic phase or the macromolecular material, and it is prone to sedimentation. Melt blending, but the amount of luminous powder added should not exceed 30%, otherwise it will affect the luminous intensity and luminous efficiency of luminous products

Method used

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  • EVA (Ethylene Vinyl Acetate) master batch as well as preparation method and application thereof
  • EVA (Ethylene Vinyl Acetate) master batch as well as preparation method and application thereof
  • EVA (Ethylene Vinyl Acetate) master batch as well as preparation method and application thereof

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preparation example Construction

[0026] The preparation method of this EVA masterbatch comprises following specific steps:

[0027] 1) Weigh the luminous powder and the composite organic coating agent according to the designed formula, put them into chloroform solvent at 40°C and react for 6 hours to prepare the composite luminous powder;

[0028] 2) Weigh EVA, kaolin, dispersant, anti-aging agent and the composite luminous powder prepared in step 1) according to the designed formula, mix them and put them into the internal mixer for internal mixing;

[0029] 3) Put the mixed material into a three-roller grinder for grinding, the temperature of the grinder is 80°C-160°C, and the speed ratio of the three rollers is 1:(2-4):(4-16) , the preferred speed ratio is 1:2:4;

[0030] 4) Transport the ground material to a single-screw extruder for granulation and drying, the extrusion temperature is 175°C-180°C, and the extrusion pressure is 3.2MPa-3.4MPa.

Embodiment 1

[0033] The EVA masterbatch is composed of the following mass percentages of raw materials: 44% EVA; 38% luminous powder; 1.0% kaolin; 2.7% dispersant; 3.5% anti-aging agent; 10.8% composite organic coating agent .

[0034] Wherein, the VA content of the EVA is 18%-25%, and the melt index is 20g / 10min-40g / 10min. The luminous powder is SrAl in the alkaline earth aluminate system long afterglow luminous powder 2 o 4 :Eu 2+ , Dy 3+ , the particle size is 12μm~20μm. The composite organic coating agent is composed of maleic anhydride and gemini surfactant in a weight ratio of 5:1, the content of maleic anhydride is 9% of the total weight of raw materials, and the content of gemini surfactant is 1.8% of the total weight of raw materials. The dispersant is 1.2% polyethylene wax and 1.5% stearic acid amide, and the percentage base of polyethylene wax and stearic acid amide is the sum of all raw material weights.

[0035] Described antiaging agent is by the antioxidant 1010 of 0.4...

Embodiment 2

[0037] The EVA masterbatch is composed of the following mass percentages of raw materials: 40% EVA; 40% luminous powder; 1.5% kaolin; 2.5% dispersant; 3.5% anti-aging agent; 12% composite organic coating agent .

[0038] Wherein, the VA content of the EVA is 18%-25%, and the melt index is 20g / 10min-40g / 10min. The luminous powder is SrAl in the alkaline earth aluminate system long afterglow luminous powder 2 o 4 :Eu 2+ , Dy 3+ , the particle size is 12μm~20μm. The composite organic coating agent is composed of maleic anhydride and gemini surfactant in a weight ratio of 5:1, the content of maleic anhydride is 10% of the total weight of raw materials, and the content of gemini surfactant is 2% of the total weight of raw materials. The dispersant is 1.8% polyethylene wax and 1.7% stearic acid amide, and the percentage bases of polyethylene wax and stearic acid amide are the sum of all raw material weights.

[0039]Described antiaging agent is by the auxiliary antioxidant DST...

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Abstract

The invention in particular discloses an EVA (Ethylene Vinyl Acetate) master batch. The EVA master batch is prepared from the following raw materials in percentage by mass: 40 percent to 50 percent of EVA, 30 percent to 40 percent of luminous powder, 1.0 percent to 1.5 percent of kaolin, 2.0 percent to 3.0 percent of a dispersant, 2.5 percent to 4.0 percent of an anti-ageing agent and 10 percent to 12 percent of a compound organic coating agent, wherein the luminous powder is alkaline earth aluminate system long afterglow luminous powder, and the grain size is 12mu m to 20mu m. According to the EVA master batch, a maleic anhydride organic ligand is introduced to the surface of the luminous powder, and the luminous powder more uniformly and densely coats the surface of the luminous powder by utilizing a gemini surfactant, so that contact between the luminous powder and external moisture or metal is reduced, and a product does not turn black; meanwhile, the combination firmness of the luminous powder and the organic ligand is improved, the hydrolyzing resistance of the product and the compatibility between the product and the EVA are greatly improved, and the influences on luminous performance of the luminous powder are very small.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an EVA color masterbatch and a preparation method and application thereof. Background technique [0002] Long afterglow luminescence is a photoluminescence phenomenon, which refers to the phenomenon that a substance can continue to emit light after the excitation light stops being irradiated. Long afterglow luminescent materials are referred to as long afterglow materials, also known as luminous materials. It is a kind of material that absorbs excitation light energy and stores it, and then slowly releases the stored energy in the form of light after the light excitation stops, which can last for several or even ten hours. The afterglow material itself does not consume electric energy, but the stored external light energy can present bright and recognizable visible light in a dark environment, which can play the role of indicating lighting, and is a "green" light sourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L23/06C08K13/06C08K9/10C08K3/24C08K3/34B29C47/92B29C48/92
CPCC08L23/0853B29C48/92B29C2948/92514B29C2948/92704C08K2201/003C08L2201/08C08L2310/00C08L23/06C08K13/06C08K9/10C08K3/24C08K3/346
Inventor 丁清景
Owner JINJIANG XINBANG NEW MATERIAL TECH
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