Water-based hybrid corrugated additive and corrugated paint
阅读说明：本技术 一种水性杂化波纹助剂及波纹漆 (Water-based hybrid corrugated additive and corrugated paint ) 是由 谢晓丽 于 2020-05-24 设计创作，主要内容包括：本发明属于涂料领域。本发明涉及一种水性杂化波纹助剂及水性杂化波纹漆,水性杂化波纹助剂的制备方法以柠檬酸(A)、醇胺衍生物(B)、含氟酸酐(C)作为原料,经过酰胺化、酯化反应得到了一种水性杂化波纹助剂材料并制备水性杂化波纹漆,在解决现有水性杂化波纹漆施工困难,立体感弱的同时,还具有高效抗污性能,可以预见,该材料将在水性涂料领域迎来广阔的市场应用空间,尤其适用装饰涂层等领域。(The invention belongs to the field of coatings. The invention relates to a water-based hybrid corrugated assistant and a water-based hybrid corrugated paint, the preparation method of the water-based hybrid corrugated assistant uses citric acid (A), alcohol amine derivative (B) and fluorine-containing acid anhydride (C) as raw materials, and the water-based hybrid corrugated assistant material is obtained through amidation and esterification reactions and is used for preparing the water-based hybrid corrugated paint.)
1. The water-based hybrid corrugated additive is characterized by having a structural formula as follows:
wherein, -R1is-CH2-or-C2H4-；-R2is-CF2-or-C2F4-。
2. A preparation method of a water-based hybrid corrugated additive is characterized by comprising the following steps: comprises the following steps:
(1) adding 1mol of citric acid (A), 3-3.5mol of alcohol amine derivative (B), 0.5-2 wt% of catalyst a, 3mol of DCC and 1.5mol of NHS into 50mol of organic solvent, carrying out ice bath for 1h, stirring at room temperature for 10-20h, carrying out suction filtration and vacuum drying to obtain an intermediate product I;
the amount of the catalyst a is the mass percent of the citric acid (A);
(2) adding 1mol of I, 3-3.5mol of fluorine-containing acid anhydride (C) and 1-4 wt% of catalyst b into 50mol of DMF, introducing nitrogen, heating to 80-110 ℃, stirring for 3-18h, cooling, standing, and vacuum concentrating; slowly adding deionized water, stirring for 10min, standing for layering, taking an organic phase, drying with anhydrous sodium sulfate, filtering, and performing rotary evaporation to obtain a target product II;
the amount of the catalyst b is the mass percent of I.
3. The preparation method of the aqueous hybrid corrugation adjuvant according to claim 2, characterized in that: the organic solvent is THF, DMF, diethyl ether or chloroform.
4. The preparation method of the aqueous hybrid corrugation adjuvant according to claim 2, characterized in that: the catalyst a is acetic acid or p-toluenesulfonic acid.
5. The preparation method of the aqueous hybrid corrugation adjuvant according to claim 2, characterized in that: the catalyst b is tetrabutyl titanate, p-toluenesulfonic acid or palygorskite solid acid.
6. The water-based hybrid corrugated paint comprises a component A and a component B, and is characterized by comprising the following raw materials in parts by weight:
the component A comprises: 60-70 parts of aqueous hydroxy acrylic acid dispersoid; 0.1-0.5 part of neutralizing agent; 5-35 parts of water-based color paste; 0-10 parts of water-based aluminum paste; 0.2-0.5 part of dispersant; 0.2-0.5 part of water-based hybrid corrugated additive; 0.1-0.3 part of acrylate thickener; deionized water: 0-15 parts; 0-5 parts of DPM;
and B component: 12-15 parts of a water-based curing agent; 3 parts of PMA.
7. The aqueous hybrid ripple paint according to claim 6, wherein: the water-based color paste is one or more of 30 percent of water-based resin-free white paste, 30 percent of water-based resin-free black paste, 30 percent of water-based resin-free blue paste and 50 percent of water-based resin-free yellow paste.
8. The aqueous hybrid ripple paint according to claim 6, wherein: the aqueous curing agent is 2655, 2547, or 2541.
9. The aqueous hybrid ripple paint according to claim 6, wherein: a preparation method of an aqueous hybrid corrugated paint comprises the following steps:
(1) according to the raw material ratio, adding 0-5 parts of deionized water, gradually adding 0-2 parts of DPM and a dispersing agent under stirring at the speed of 600-;
(2) when in use, the viscosity is adjusted, and the component A finished paint and the component B curing agent are mixed for use.
Technical Field
The invention relates to a water-based hybrid ripple auxiliary agent and ripple paint. The invention belongs to the field of coatings.
Background
The ripple paint is one kind of artistic paint, and owing to its excellent covering power, it can cover the uneven base material and other defects, so that it is very popular in the fields of computer, instrument and meter, hardware machinery and machine tool, etc. and has beautiful, luxury, elegant and high hardness decoration effect. However, the general corrugated paint has high construction requirements, and is difficult to clean due to the fact that the surface of a formed paint film is concave-convex, and dust and dirt are easily accumulated.
The existing corrugated paints in the market are various, the most widely applied corrugated paints are acrylic corrugated paints and alkyd corrugated paints, which are single-component corrugated paints and double-component corrugated paints, and are also divided into self-drying type corrugated paints and drying type corrugated paints, but most of the acrylic corrugated paints and the alkyd corrugated paints are solvent-based corrugated paints, and do not meet the requirement of low VOC (volatile organic compound) emission. With the improvement of living standard and the enhancement of health consciousness, people pay more and more attention to environmental protection. The low-VOC and low-pollution coating is a main target of the development of the coating in the 21 st century, and environment-friendly coatings such as water-based coatings, high-solid coatings, powder coatings, UV coatings and the like correspondingly appear. The water-based hybrid corrugated paint is developed gradually, but the existing water-based hybrid corrugated paint has poor curing effect and long drying time, and the formed corrugated stereoscopic impression is not strong.
Therefore, for researchers, the developed water-based hybrid corrugated paint has the characteristics of simple and convenient construction, uniform orange-peel finish film, easy scrubbing after film forming and the like, and is a problem to be overcome. The water-based two-component polyurethane corrugated paint has the advantages and is rarely reported.
Disclosure of Invention
The invention aims to overcome the defects of difficult construction and weak stereoscopic impression of the existing water-based hybrid corrugated paint, and provides a water-based hybrid corrugated additive and a water-based hybrid corrugated paint.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an aqueous hybrid corrugated additive, which has the following structural formula:
wherein, -R1is-CH2-or-C2H4-；-R2is-CF2-or-C2F4-。
A preparation method of a water-based hybrid corrugated additive is characterized by comprising the following steps: comprises the following steps:
(1) adding 1mol of citric acid (A), 3-3.5mol of alcohol amine derivative (B), 0.5-2 wt% of catalyst a, 3mol of DCC and 1.5mol of NHS into 50mol of organic solvent, carrying out ice bath for 1h, stirring at room temperature for 10-20h, carrying out suction filtration and vacuum drying to obtain an intermediate product I;
the amount of the catalyst a is the mass percent of the citric acid (A);
(2) adding 1mol of I, 3-3.5mol of fluorine-containing acid anhydride (C) and 1-4 wt% of catalyst b into 50mol of DMF, introducing nitrogen, heating to 80-110 ℃, stirring for 3-18h, cooling, standing, and vacuum concentrating; slowly adding deionized water, stirring for 10min, standing for layering, taking an organic phase, drying with anhydrous sodium sulfate, filtering, and performing rotary evaporation to obtain a target product II;
the amount of the catalyst b is the mass percent of I.
Preferably, the organic solvent is THF, DMF, diethyl ether or chloroform.
Preferably, the catalyst a is acetic acid or p-toluenesulfonic acid.
Preferably, the catalyst b is tetrabutyl titanate, p-toluenesulfonic acid or palygorskite solid acid.
The water-based hybrid corrugated paint comprises a component A and a component B, and is characterized by comprising the following raw materials in parts by weight:
the component A comprises: 60-70 parts of aqueous hydroxy acrylic acid dispersoid; 0.1-0.5 part of neutralizing agent; 5-35 parts of water-based color paste; 0-10 parts of water-based aluminum paste; 0.2-0.5 part of dispersant; 0.2-0.5 part of water-based hybrid corrugated additive; 0.1-0.3 part of acrylate thickener; deionized water: 0-15 parts; 0-5 parts of DPM;
and B component: 12-15 parts of a water-based curing agent; 3 parts of PMA.
Preferably, the aqueous color paste is one or more of 30% aqueous resin-free white paste, 30% aqueous resin-free black paste, 30% aqueous resin-free blue paste and 50% aqueous resin-free yellow paste.
Preferably, the aqueous curing agent is 2655, 2547 or 2541.
A preparation method of an aqueous hybrid corrugated paint comprises the following steps:
(1) according to the raw material ratio, adding 0-5 parts of deionized water, gradually adding 0-2 parts of DPM and a dispersing agent under stirring at the speed of 600-;
(2) when in use, the viscosity is adjusted, and the component A finished paint and the component B curing agent are mixed for use.
The preparation process of the water-based hybrid corrugated additive provided by the invention comprises the following steps:
the invention has the beneficial effects that:
(1) the invention provides a water-based hybrid corrugated assistant, which is prepared by adopting citric acid (A), alcohol amine derivatives (B) and fluorine-containing anhydride (C) as raw materials, relieves the current situation of low selectivity of the existing water-based hybrid corrugated assistant, and has the advantages of wide raw material source, simple reaction steps and easy operation.
(2) The invention provides an aqueous hybrid corrugated assistant and an aqueous hybrid corrugated paint. On one hand, the low surface tension of fluorine atoms promotes the fluorine atoms to migrate to the surface, and meanwhile, the difference between the fluorine atoms and the surface tension of a paint film system promotes the fluorine atoms to form a Benard vortex which is beneficial to the formation of patterns; on the other hand, the evaporation of water in the system further accelerates the pattern formation.
(3) The invention provides a water-based hybrid corrugated assistant and a water-based hybrid corrugated paint. The existence of amido bond ensures that the compound has certain water solubility and good amido bond stability.
(4) The invention provides a water-based hybrid corrugated assistant and a water-based hybrid corrugated paint. The carboxyl group as active group can react with acrylic resin, alkyd resin, polyester resin, polyurethane and the like to be keyed into a paint film to form a stable structure.
(5) The invention provides a water-based hybrid corrugated assistant and water-based hybrid corrugated paint, which solve the problems of difficult construction and weak stereoscopic impression of the existing corrugated paint and enable the corrugated paint to have the characteristics of pollution resistance, oil resistance and the like by molecular design and adopting a chemical modification means. It is expected that the material will meet wide market prospects, especially in the field of decorative coatings.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to examples. It is to be understood, however, that the following examples are illustrative of embodiments of the present invention and are not to be construed as limiting the scope of the invention.