Preparation method of acrylic acid-fluorocarbon composite heat reflection sun-resistant coating used for coated fabric

Abstract

The invention discloses a preparation method of an acrylic acid-fluorocarbon composite heat reflection sun-resistant coating used for coated fabric. Fluorocarbon resin is organically mixed with acrylic acid resin at a reasonable scientific ratio, and both the fluorocarbon resin and the acrylic acid resin have excellent compatibility, so that a cold-proof, anti-freeze, flexible and firm coating film which is good in sun resistance and weather resistance can be obtained; meanwhile, nano-titanium dioxide modified by a silane coupling agent is added instead of glass beads of the traditional heat reflection coating, so that the production cost is lowered, and the light reflectivity is improved; a complex reaction is performed on citric acid and metal cations in zinc nitrate, aluminium nitrate and manganese acetate, and ethylene glycol is added in a matching manner, so that the complex reaction is promoted, therefore, a product is more uniform and is comparatively high in purity; manganese-nitrogen-doped zinc aluminate is obtained by a calcination reaction and an ammonolysis reaction; the manganese-nitrogen-doped zinc aluminate is added into the mixed resin, so that the reflecting property of the coating film for sunlight is further enhanced, therefore, the inward conduction of heat energy is reduced through light reflex.

Description

technical field [0001] The invention relates to the technical field of coated cloth, in particular to a preparation method of an acrylic fluorocarbon composite heat-reflecting sunscreen coating for coated cloth. Background technique [0002] Coated fabrics are mainly coated with a layer of material with special functions on the basis of fabrics, which adds special functions to the fabrics, so it is also called functional coated fabrics. According to the function, it can be divided into sun protection, waterproof, flame retardant and other coated cloths. Due to its excellent characteristics, it can be widely used in clothing, tents, transportation, national defense and other fields. Solar energy is an important guarantee for the survival of human beings and many creatures on the earth, but strong solar radiation will also bring great adverse effects to industrial production and people's lives. Apply functional heat-reflective coatings on the surface of components and buildin...

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the coated cloth is mostly used in the manufacture of tents and push-pull tents. It has good heat reflectivity and can maintain a suitable temperature under the tent under direct sunlight, making the human body feel comfortable. At the same time, it has a certain anti-ultraviolet function and has a good sunscreen effect. , can prolong the service life of the coated cloth, however, in the prior art, acrylic resin is mostly used as the film-forming base material of the coated cloth. However, due to the unavoidable residual double bonds during synthesis, the coating film will appear yellowing when applied to heat reflective coatings, especially after absorbing solar heat, the coating life is short

In contrast, fluorocarbon resin has become an object of concern in the engineering community due to its excellent weather resistance, sun resistance, acid rain resistance, and non-pollution. The joint density is low, the adhesion is poor, and the paint film is soft, so it needs to be modified. Combining acrylic resin and fluorocarbon resin accordingly can obtain a heat-reflective sunscreen coating with complementary advantages and high performance, which can meet the needs of coated cloth