Preparation method of water-soluble modified starch resin

Abstract

The invention relates to the technical field of anti-icing coatings, in particular to a preparation method of water-soluble modified starch resin. The water-soluble modified starch resin is formed by copolymerizing 70-110 parts of soluble starch, 20-55 parts of a water-soluble acid or salt monomer containing one double bond, 1-30 parts of a water-soluble hydroxy monomer containing one double bond, 15-55 parts of a water-soluble nitrogen-containing monomer containing one double bond, 1-20 parts of a water-soluble crosslinking monomer containing two double bonds, 50-150 parts of water and 1-20 parts of a water-soluble thermal initiator; a water-based organic-inorganic hybrid anti-icing coating is prepared from water-based resin, a curing agent, a filler, a surfactant and a solvent; an aluminum foil which is subjected to degreasing, washing with deionized water and drying, and treatment with coating type zirconate is coated with the prepared coating, so as to obtain an anti-icing coating aluminum foil with icing resistance. The water-soluble modified starch resin prepared in the invention is particularly suitable for the treatment of air-conditioning coating aluminum foils, refrigerator / freezer liners and other heat exchange surfaces.

Description

technical field [0001] The invention relates to the technical field of anti-icing coatings, in particular to a preparation method of water-soluble modified starch resin. Background technique [0002] In transportation, aerospace, heat exchange, power communication and many other fields, icing / frost has brought great harm and potential safety hazards to human beings and society. Although the existing anti-icing methods such as mechanical deicing, heating deicing and spraying chemical reagents are effective, they have problems such as large energy consumption, environmental pollution and poor durability. The use of anti-icing functional coatings to modify the surface of substrates is convenient and effective, and sacrificial coatings, ice-phobic coatings and super-hydrophobic coatings have become research hotspots. [0003] Existing anti-icing / frost technology mainly adopts super-hydrophobic surface treatment, such as Chinese patent CN 104341901 A discloses a kind of organic-...

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Problems solved by technology

[0003] Existing anti-icing / frost technology mainly adopts super-hydrophobic surface treatment, such as Chinese patent CN 104341901 A discloses a kind of organic-inorganic system coating, uses acrylic resin as film-forming material, adds diatomite, carbon black, isocyanate, hexadecimal Sodium phosphate and silicone defoamer are blended and melted to prepare a wear-resistant anti-icing coating; Chinese patent CN 103013316 A "a super-weather-resistant, wear-resistant and anti-icing wind power blade coating and its preparation method" discloses a Organic-inorganic system coatings, fluorocarbon resins and polyester resins as film-forming materials, supplemented with nano-fillers and dispersants to prepare wear-resistant, weather-resistant, and anti-icing wind turbine blade coatings. These surfaces are controlled by certain surface morphology and low surface energy. The combination of substances can achieve resistance to external pollution or pollutants and easy cleaning, but the anti-icing effect is not clear, especially for long-lasting anti-icing. No relevant research and investigations have been carried out

In the Chinese patent CN103194130 A, the ice-adhesive anti-icing coating prepared with acrylic resin supplemented with inorganic fillers needs external forces such as wind force or gravity to remove the ice layer to achieve the anti-icing effect, which can only accelerate the rapid detachment of the ice layer

[0004] The defects of the existing anti-icing / frost technology are mainly manifested in: the use of a hydrophobic surface cannot satisfy the anti-icing performance for a long time, and it often decays rapidly after repeated use; no effective solution

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