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Core-shell anti-infrared auxiliary agent, heat-insulation EVA non-flowing glue film and preparation method

An infrared, core-shell technology, applied in the direction of adhesives, adhesive additives, film/flake adhesives, etc., can solve the problems of burning material, uneven temperature distribution, serious flow of glue, etc., and achieve the performance of shielding infrared rays and ultraviolet rays. Improve the effect of shielding ultraviolet and infrared rays and improving the uniformity of thickness

Inactive Publication Date: 2014-11-05
广州保均塑料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the haze problem has been successfully solved, the relative process is still relatively complicated, and the glue flow is serious, which directly causes the frame to appear easily in the laminated glass
Although the use of EVA with a low melt index can successfully solve the problem of glue flow, due to the uneven temperature distribution on both sides of the extruder die, the thickness of the film is unevenly distributed. If it accumulates for a long time, it will cause burning on both sides.

Method used

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  • Core-shell anti-infrared auxiliary agent, heat-insulation EVA non-flowing glue film and preparation method
  • Core-shell anti-infrared auxiliary agent, heat-insulation EVA non-flowing glue film and preparation method
  • Core-shell anti-infrared auxiliary agent, heat-insulation EVA non-flowing glue film and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0041] Prepare the core-shell type anti-infrared auxiliary agent as follows:

[0042] (1) EVA resin is added into an organic solvent so that the content of the EVA resin is 8-12wt%, and then reflux at 120-150° C. for 10-30 min to obtain an EVA resin binder.

[0043] (2) W with a particle size of 30-90mm x Ce y -ATO is added to the organic solvent and makes W x Ce y - The content of ATO is 15-30wt%, and then the mixture is placed in an ultrasonic apparatus and dispersed by ultrasonic waves for 10-20 minutes, and then the mixture is placed on a high-speed sand mill to circulate and disperse for 5-8 hours to obtain nano heat-insulating slurry.

[0044] (3) Evenly mix 60-90 parts of EVA resin binder with 10-40 parts of nano heat-insulating slurry to obtain a core-shell type anti-infrared auxiliary agent.

[0045] The components and their specific dosages in Examples 1-6 are shown in Table 1 below.

[0046] Table 1 Components and dosages of core-shell anti-infrared additives p...

Embodiment 7-12

[0051] The core-shell type anti-infrared auxiliary agent d prepared by applying the above-mentioned embodiments respectively 1-6 Prepare heat-insulating EVA non-flow adhesive film as follows:

[0052] (1) In a horizontal high-speed mixer, 2Kg of EVA resin (KA-31, VA28%, melt index 7g / 10min) and 60g of core-shell type anti-infrared auxiliary agent are mixed uniformly, and continue to stir until the mixture is dry ( Stir at room temperature for more than 5 minutes, such as stirring for 10 minutes or 30 minutes, etc.), to obtain the initial material.

[0053] (2) 12g coupling agent a 1 , 16g crosslinking agent b 1 and 12g UV absorber c 1 Mix evenly to obtain a mixture of additives; then mix the mixture of additives and the starting material evenly, and continue to stir until the mixture is dry (stirring at room temperature for more than 5 minutes, such as stirring for 10 minutes or 30 minutes, etc.), to obtain a coarse material.

[0054] (3) Use a suction machine to pump the ...

Embodiment 13-32

[0064] Prepare heat-insulating EVA non-flow adhesive film as follows:

[0065] (1) Mix 2Kg of EVA resin and core-shell anti-infrared additives evenly in a horizontal high-speed mixer, and continue stirring until the mixture is dry (stirring at room temperature for more than 5 minutes, such as stirring for 10 minutes or 30 minutes, etc.), to obtain the initial material.

[0066] (2) Mix the coupling agent, cross-linking agent and ultraviolet absorber evenly to obtain the auxiliary agent mixture; then mix the auxiliary agent mixture and the initial material evenly, and keep stirring until the mixture is dry (stirring at room temperature for more than 5 minutes, such as stirring for 10 minutes or 30min, etc.), to obtain coarse material.

[0067] (3) Use a suction machine to pump the coarse material into the single-screw extruder, and control the screw temperature of the single-screw extruder at 85-100°C, heat the die head through an oil bath and control the die head temperature ...

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Abstract

The invention relates to the technical field of heat-insulation materials, specifically to a core-shell anti-infrared auxiliary agent, a heat-insulation EVA non-flowing glue film and its preparation method. The core-shell anti-infrared auxiliary agent is prepared from W-Ce-Sb-doped stannic oxide, EVA resin and an organic solvent. The EVA non-flowing glue film is prepared from EVA resin, the core-shell anti-infrared auxiliary agent, a coupling agent, a cross-linking agent and an ultraviolet light absorber. Infrared ray and ultraviolet ray shielding performance of the EVA non-flowing glue film prepared with the addition of the core-shell anti-infrared auxiliary agent can be enhanced remarkably. By the use of the EVA non-flowing glue film, its infrared and ultraviolet rejection is remarkably raised under the circumstance of guaranteeing visible light transmittance. In addition, the EVA non-flowing glue film has characteristics of low haze and high thickness uniformity. As low temperature control treatment is carried out on a die-head of an extruder by oil bath during the production, broken selvage, burning burden or non-uniform thickness of the EVA non-flowing glue film in a highly cross-linked state is avoided, and thickness difference can be controlled within + / -0.02mm.

Description

technical field [0001] The invention relates to the technical field of heat insulation materials, in particular to a core-shell type anti-infrared auxiliary agent, a heat-insulating EVA non-flow adhesive film and a preparation method thereof. Background technique [0002] In modern buildings, large-area daylighting glass is widely used, and people's requirements for architectural glass are getting higher and higher, but the heat transfer coefficient of ordinary glass used in buildings is much higher than that of brick structure walls, which leads to increased heat loss in buildings . According to statistics, the energy consumption of various buildings accounts for about one-third of the total energy consumption, and in the energy consumption of buildings, more than 50% is lost by glass doors and windows. 43 billion m in China 2 99% of the buildings in China are high energy consumption buildings, even if they are new buildings, more than 95% are still high energy consumptio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J11/00C09J11/06C09J7/00
Inventor 余力黎成武梁文平
Owner 广州保均塑料科技有限公司
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