EVA intermediate membrane for high photopermeability heat insulation interlayer glass and preparation method thereof

Abstract

The invention relates to an EVA intermediate membrane for high photopermeability heat insulation interlayer glass and a preparation method thereof. The EVA intermediate membrane comprises, by weight,97-98 parts of EV masterbatch, 0.5-2 parts of an MTO doped ATO nano heat insulation slurry, 0.5-1 part of a crosslinking agent, 0.5-1 part of an auxiliary crosslinking agent, 0.1-0.5 part of a coupling agent, 0.1-0.5 part of an antioxidant, 0.1-0.5 part of a photoinitiator and 0.1-0.5 part of an ultraviolet absorbing agent. The MTO doped ATO nano heat insulation slurry has the advantages of uniform particular strength, high crystallinity, large specific surface ratio and compatibility with EVA, and the heat insulation performance of the MTO doped ATO nano heat insulation slurry is better, theantioxidant and the ultraviolet absorbing agent are added to a reaction system, a synergistic effect is generated by the antioxidant and the ultraviolet absorbing agent, the intermediate membrane forthe high photopermeability heat insulation interlayer glass is prepared, the bonding performance of the intermediate membrane and the glass is stronger, the photopermeability rate of an adhesive membrane is higher, the haze ratio is low, and the weather resistance is better.

Description

technical field [0001] The invention relates to the technical field of EVA films, in particular to an EVA interlayer film for high light-transmitting and heat-insulating laminated glass and a preparation method thereof. Background technique [0002] Laminated glass is a deep-processed glass product bonded by two or more pieces of glass and a viscoelastic polymer film between the glass pieces. Laminated glass uses the good toughness and strong cohesion of the interlayer to improve the toughness, resilience, viscosity and shear damping of the glass, so that the laminated glass has strong safety against collision impact and noise isolation performance. , so it has become a new type of decorative glass material with good adaptability and durability, and is increasingly favored by the construction industry. [0003] The existing Chinese patent with authorized notification number CN101880418B discloses a transparent EVA heat insulation material and its preparation method. In the ...

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Problems solved by technology

[0004] At present, those skilled in the art are devoted to the research and development of nano-type thermal insulation materials. Traditional thermal insulation materials include one or more of ATO, MTO, ITO, ZTO, lanthanum hexaboride and cesium tungsten bronze; cesium tungstate The characteristic is that it has good performance in visible light transmittance and infrared blocking. The main disadvantage is poor thermal stability. At a temperature of 85 degrees for 10 hours, the performance drops by 10%, and after 200 hours the performance drops to more than 90%; ATO visible light transmittance High efficiency, good blocking effect after 1400nm, but average blocking effect between 800nm ​​and 1400nm; MTO is slightly weaker than ATO in the visible light region, but stronger than ATO between 800 and 1400nm; LaB6 has a good blocking effect between 800 and 1400nm The effect is good, but the transmittance in the visible light region is low, which affects the transparency; it is rare to apply nano-metal oxides such as ATO, MTO, and ITO to the EVA interlayer film of laminated glass. The main problem is that the product performance is not good. This has a lot to do with EVA film formula design and production implementation process

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