Acrylate modified hydroxyl-terminated butadiene resin with low infrared emissivity, and preparation method thereof

Abstract

The invention discloses an acrylate modified hydroxyl-terminated butadiene resin with low infrared emissivity, and a preparation method thereof. The acrylate modified hydroxyl-terminated butadiene resin is obtained through free radical copolymerization of hydroxyl-terminated polybutadiene and an acrylate monomer and / or a methacrylate monomer, and the solid content of the obtained acrylate modified hydroxyl-terminated butadiene resin with low infrared emissivity is 40-60wt%. The acrylate modified hydroxyl-terminated butadiene resin with low infrared emissivity has the advantages of low glossiness and good weather ability, can be used to prepare dual-component infrared camouflage coatings, and can be used to coat military use devices, machines, engineering, barracks and other places to realize a camouflage purpose.

Description

technical field [0001] The invention relates to a resin, in particular to an acrylate-modified hydroxyl-terminated polybutadiene resin with low infrared emissivity and a preparation method thereof. Background technique [0002] With the development of science and technology, detection methods are becoming more and more advanced. In order to prevent military targets and weapons from being discovered by the enemy, the use of stealth technology to improve their survivability and penetration capabilities has become the simplest and most effective means. The research of stealth technology has become a military technology. important direction of development. Infrared stealth paint is a stealth technology that makes it difficult to detect or cause illusions for infrared detection equipment in the 3μm-5μm and 8μm-14μm working bands, also known as thermal infrared stealth paint. For a large number of low-temperature targets on land, the threat mainly comes from 8 μm ~ 14 μm infrared...

AI Technical Summary

Problems solved by technology

[0007] For example, Chinese patent document CN 103290684 A (application number 201310248696.5) discloses a green stealth coating with low infrared emissivity and a preparation method thereof. The binder in the coating is polyacrylate, polystyrene, polyurethane and polyacrylonitrile. Olefin-based adhesives have poor weather resistance and cannot be used outdoors, while many military facilities are used outdoors, and a long time will affect the infrared emission performance

[0008] Rubber-based adhesives have high molecular weight, high viscosity, insufficient fullness of the paint film, and poor weather resistance, which is not good for outdoor use; for example, alkyd resin and epoxy resin have high reflectivity and require a large amount of microwave absorption The material is filled, and the weather resistance is not good, and the effect of the prepared infrared stealth paint is not very good

[0009] In order to improve the performance of the adhesive, some people in China use EPDM rubber to modify or graft acrylic resin. Although the weather resistance of the obtained adhesive is slightly improved, it can be used outdoors, but there is no hydroxyl structure in the molecule. It cannot be cross-linked and cured, and the paint film coated with the prepared coating has insufficient resistance, weather resistance, water resistance, and corrosion resistance.

Some people use high-solid and low-viscosity hydroxyl acrylic resin to prepare stealth coatings. Due to the C-O bond stretching vibration absorption of acrylic resin, the resin itself does not have low infrared emission characteristics, so its performance as an infrared stealth adhesive is not good.

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