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

A hydroxyl-terminated polybutadiene, low infrared emission technology, applied in the field of resin, can solve the problems of high reflectivity, insufficient paint film resistance, poor weather resistance, etc., and achieves good infrared transparency, enhanced salt spray resistance, Excellent mechanical properties

Inactive Publication Date: 2015-10-21
常州市武进晨光金属涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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, an

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (Example 1, the acrylate-modified hydroxyl-terminated polybutadiene resin of low infrared emissivity)

[0027] The acrylate-modified hydroxyl-terminated polybutadiene resin with low infrared emissivity in this embodiment is obtained by radical copolymerization of hydroxyl-terminated polybutadiene and acrylate monomers and / or methacrylate monomers. The amount of each raw material in the radical copolymerization reaction is as follows: 5wt%-15wt% of hydroxyl-terminated polybutadiene, 25wt%-55wt% of acrylate monomer or methacrylate monomer, 35wt%-65wt% of solvent, and 0.5wt% of initiator % to 2 wt%, the sum of the amount of each raw material is 100 wt%, and the solid content of the obtained acrylate-modified hydroxyl-terminated polybutadiene resin with low infrared emissivity is 40-60 wt%.

[0028] The hydroxyl-terminated polybutadiene is a homopolymer of butadiene with a number average molecular weight of 2000-3000. There are more than two hydroxyl groups on average at b...

Embodiment 2

[0032](The preparation method of the acrylate-modified hydroxyl-terminated polybutadiene resin of embodiment 2, low infrared emissivity)

[0033] The preparation method of the acrylate-modified hydroxyl-terminated polybutadiene resin of the low infrared emissivity of the present embodiment is as follows:

[0034] In a 500mL four-necked reaction flask equipped with a stirrer, a thermometer, a dropping funnel and a condenser, add solvent xylene 200g (accounting for 40wt% of the total amount of reaction feed), 50g of hydroxyl-terminated polybutadiene (accounting for reaction feed 10wt% of the total amount), under the protection of a nitrogen atmosphere, start the stirrer, and heat the material in the reaction bottle to 80°C.

[0035] Open the dropping funnel and start to add 200 g of the mixed solution of acrylate monomer and / or methacrylate monomer and initiator in the dropping funnel at a constant speed. In this embodiment, the mixed solution in the dropping funnel includes met...

Embodiment 3

[0037] (The preparation method of the acrylate-modified hydroxyl-terminated polybutadiene resin of embodiment 3, low infrared emissivity)

[0038] The preparation method of the acrylate-modified hydroxyl-terminated polybutadiene resin of the low infrared emissivity of the present embodiment is as follows:

[0039] In a 500mL four-necked reaction flask equipped with a stirrer, a thermometer, a dropping funnel and a condenser, add solvent toluene 250g (accounting for 50wt% of the total amount of the reaction feed), 50g of hydroxyl-terminated polybutadiene (accounting for the total amount of the reaction feed). 10wt% of the amount), under the protection of a nitrogen atmosphere, start the stirrer, and heat the material in the reaction bottle to 100 ° C.

[0040] Open the dropping funnel and start to add 150 g of the mixed solution of acrylate monomer and / or methacrylate monomer and initiator in the dropping funnel at a constant speed. In this embodiment, the mixed solution in the...

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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...

Claims

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Application Information

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IPC IPC(8): C08F279/02C08F220/06C08F220/14C08F220/18
Inventor 徐勤力李江新岳晓峰
Owner 常州市武进晨光金属涂料有限公司
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