Nano metal oxide-containing solvent-based vehicle thermal insulation coating

A nano-metal and thermal insulation coating technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of time-consuming, high cost, brittleness, etc., and achieve the effect of overcoming easy aggregation, taking into account anti-corrosion, and reducing absorption

Active Publication Date: 2012-06-20
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in the Chinese patent, the application number 03150634 discloses a heat-insulating vehicle paint that uses porous ceramic microbeads as the heat insulating material, but the porous ceramic microbeads used do not have infrared shielding effect, and the particle size is relatively coarse (150-200 mesh), fragile, and need to be dispersed at a speed lower than 5 revolutions per second, which is time-consuming and difficult to ensure stable dispersion. Therefore, the heat insulation effect of the formed coating film is limited and it is difficult to meet the decorative requirements of vehicles; Application number CN200710303468.8 discloses a solvent-based vehicle heat-insulating coating prepared by using three types of heat-insulating materials: hollow ceramic microbeads, silica airgel and infrared reflective pigments (metal oxide composite pigments). There are many kinds of materials, which account for a high proportion in the coating, and the infrared reflective pigments used are metal oxide composite pigments prepared by high-temperature treatment of various metal oxides. Although it has a certain infrared reflection effect, it is a kind of energy consumption. High-cost and high-cost products do not meet the current low-carbon and energy-saving requirements. In addition, when preparing coatings, the three insulation materials are dispersed in the film-forming resin using the existing high-speed dispersion and grinding methods. Therefore, it is difficult to guarantee All three heat insulation materials can be dispersed evenly and stably, and it is difficult to fully exert their heat insulation effect
In addition, some water-based thermal insulation coatings have been developed recently. Although water-based coatings are more in line with environmental protection requirements than solvent-based coatings, the corrosion resistance of water-based coatings still needs to be improved so far. They are mainly used for glass surface thermal insulation coatings, which cannot meet the environmental requirements. Vehicle Coating Requirements

Method used

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  • Nano metal oxide-containing solvent-based vehicle thermal insulation coating
  • Nano metal oxide-containing solvent-based vehicle thermal insulation coating
  • Nano metal oxide-containing solvent-based vehicle thermal insulation coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 prepares the acrylic resin A containing nanometer metal oxide

[0019] Concrete preparation steps are as follows:

[0020] ①Preparation of nano metal oxide sol

[0021] First use ultrasonic or high-speed dispersion to disperse 100g of nano-metal oxide CuO with a particle size of 7nm in 250g of solvent butyl acetate to form a sol, then add it to a reaction vessel equipped with a condenser, a stirrer, and a thermometer, stir and After the temperature was raised to 60°C, 50g of silane coupling agent vinyltrimethoxysilane was added dropwise, and the reaction was kept under stirring for 4h to obtain the nano-metal oxide CuO sol. In the total weight of the nano-metal oxide sol, the nano-metal oxide CuO accounted for 25wt%, silane coupling agent vinyltrimethoxysilane accounts for 12.5wt%;

[0022] ②Preparation of acrylic resin A containing nano-metal oxides

[0023] Add 100 g of nano-metal oxide CuO sol and 100 g of solvent xylene prepared in step ① into a reac...

Embodiment 2

[0025] Embodiment 2 prepares the acrylic resin B containing nanometer metal oxide

[0026] Concrete preparation steps are as follows:

[0027] ①Preparation of nano metal oxide sol

[0028] It is basically the same as Example 1, the difference is: the nanometer metal oxide MnO with a particle diameter of 15nm 2 Substituting the nanometer metal oxide CuO with a particle size of 7nm; the prepared nanometer metal oxide MnO 2 In the total weight of the sol, the nanometer metal oxide MnO 2 Accounting for 25wt%, the silane coupling agent vinyltrimethoxysilane accounts for 12.5wt%;

[0029] ②Preparation of acrylic resin B containing nano-metal oxides

[0030] Add the nanometer metal oxide MnO prepared in step ① into a reaction vessel equipped with a condenser, a stirrer, a thermometer and a dropping funnel 2 Sol 100g and solvent xylene 332g, stir evenly, heat up to 140°C, add dropwise 90g styrene, 180g methyl methacrylate, 6g acrylic acid, 144g butyl methacrylate, 36g isooctyl ac...

Embodiment 3

[0032] Embodiment 3 prepares transparent solvent-based vehicle thermal insulation coating containing nanometer metal oxide

[0033] ① Coating formula

[0034] It is composed of the following components. Except for solvent, the content of each component is as follows in terms of solids: acrylic resin containing nanometer metal oxide accounts for 36.4wt%, amino resin accounts for 14wt%, coloring pigment accounts for 0wt%, and filler accounts for 0wt%. The solvent accounts for 3.04wt%, and the solvent accounts for 46.56wt% (including the solvent contained in the remaining components). The sum of the above components is 100%. The raw material consumption of each component is shown in Table 1.

[0035] Table 1

[0036]

[0037]

[0038] ②Preparation process

[0039] The transparent solvent-based vehicle heat-insulating coating containing nanometer metal oxide is prepared according to the existing technology.

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Abstract

The invention relates to a nano metal oxide-containing solvent-based vehicle thermal insulation coating, which consists of the following components based on solids in percentage by weight: 17 to 48 percent of nano metal oxide-containing acrylic resin, 7 to 21 percent of amino resin, 0 to 20 percent of coloring pigment, 0 to 4 percent of filler, 1 to 6 percent of aid and the balance of solvent, wherein the nano metal oxide-containing acrylic resin is prepared by dripping a mixed liquor containing vinyl monomers and an initiator into a nano metal oxide sol prepared from nano metal oxide, a silane coupling agent and a solvent for radical polymerization. The nano metal oxide-containing solvent-based vehicle thermal insulation coating has a good thermal insulation effect, the mechanical properties and various medium resistance of a film formed by the coating still can reach the levels of common acrylic resin vehicle coatings, and the aims of thermal insulation, decoration and corrosion resistance are fulfilled.

Description

technical field [0001] The invention relates to a solvent-based heat-insulating coating for vehicles containing nanometer metal oxides. Background technique [0002] Over the past century, the global average temperature has risen by 0.74°C, while the average temperature in China has risen by 1.1°C. Climate change has already had a series of serious impacts on the global environment, and the situation will continue to deteriorate if left unchecked. Therefore, low-carbon and energy-saving have become global hot topics. Thermal insulation coating is also a new type of functional coating developed under this background. It can effectively prevent heat conduction, reduce the temperature of the surface coating and the internal environment, and is currently widely used in the fields of building exterior walls, glass of buildings and vehicles, ship decks, oil tank exterior walls, and military aerospace, while vehicle heat insulation coatings and Unlike other heat-insulating coatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D161/20C09D5/00C09D5/08C09D7/12
Inventor 陈月珍丁帮勇陈瑞芳刘汉功王子恺
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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