WO2020237413A1 - Water-based paint for spring and preparation method therefor and application thereof, and spring - Google Patents

Abstract

A water-based paint for a spring and a preparation method therefor and an application thereof, and a spring. The water-based paint for a spring is mainly prepared from the following raw materials in parts by weight: 30-35 parts of a waterborne epoxy modified acrylic resin, 5-6 parts of a waterborne acrylic resin, 5-6 parts of an adhesion promoter, and 28-30 parts of water, wherein the waterborne acrylic resin comprises at least one of a waterborne organosilicon modified acrylic resin, a waterborne methacrylic resin, a waterborne acrylate resin, or a waterborne methacrylate resin. The water-based paint has good adhesion, flexibility, and water resistance, and can be effectively adhered to the surface of a spring. The adhesion reaches 0 level, so that the water-based paint does not fall off and is not corroded for 10 years of use, thereby prolonging the service life of the spring.

Description

Water-based paint for spring, preparation method and application thereof, and spring Technical field

The present disclosure relates to the field of coatings, and in particular, to a spring water-based paint, a preparation method and application thereof, and a spring.

Background technique

A spring is a mechanical part that uses elasticity to work. It is generally made of spring steel. It is used to control the movement of the mechanical part, relieve impact or vibration, store energy, and measure the size of the force. It is widely used in machines and meters.

At present, springs on the market are mostly sprayed with oil-based paint to avoid corrosion of the spring base material and prolong the service life of the spring. However, the oil-based paint is more polluted, and the VOC (Volatile Organic Compounds) emission is as high as 300g/L. The volatile benzene and xylene in oil paint are the main components that cause leukemia; and because the surface of the spring is smooth, its adhesion to the spring surface is poor, and it can be scratched off with a light stroke, and it will begin to fall off within two years. The service life is short.

In view of this, this disclosure is hereby provided.

Public content

The first purpose of the present disclosure is to provide a water-based paint for springs, which has good adhesion, flexibility and water resistance, can effectively adhere to the surface of the spring, and has an adhesion level of 0. Corrosion greatly prolongs the service life of the spring.

The second objective of the present disclosure is to provide a method for preparing water-based paint for springs.

The third objective of the present disclosure is to provide an application of water-based spring paint in surface treatment of springs.

The fourth object of the present disclosure is to provide a spring.

In order to achieve the above objectives of the present disclosure, the following technical solutions are specifically adopted:

In the first aspect, the present disclosure provides a spring water-based paint, which is mainly prepared from the following parts by weight: 30-35 parts of water-based epoxy modified acrylic resin, 5-6 parts of water-based acrylic resin, and adhesion 5-6 parts of accelerator and 28-30 parts of water;

The water-based acrylic resin includes at least one of water-based silicone modified acrylic resin, water-based methacrylic resin, water-based acrylate resin, or water-based methacrylate resin.

As a further preferred technical solution, the water-based paint is mainly prepared from the following parts by weight of various raw materials: 31-35 parts of water-based epoxy modified acrylic resin, 5.2-6 parts of water-based acrylic resin, and adhesion promoter 5- 5.8 parts, and 28.4-30 parts of water.

As a further preferred technical solution, the water-based paint is mainly prepared from the following parts by weight of each raw material: 32-34 parts of water-based epoxy modified acrylic resin, 5.3-5.8 parts of water-based acrylic resin, and 5.2-parts of adhesion promoter 5.6 parts, and 28.5-29.5 parts of water.

As a further preferred technical solution, the hydroxyl value of the water-based epoxy-modified acrylic resin is 180-260 mgKOH/g, preferably 190-240KOH/g, and more preferably 200-240KOH/g.

As a further preferred technical solution, the water-based acrylic resin is selected from water-based silicone-modified acrylic resins.

As a further preferred technical solution, the weight average molecular weight of the water-based silicone modified acrylic resin is 30,000 to 70,000.

As a further preferred technical solution, the water-based paint also includes the following raw materials in parts by weight: 3-4 parts by weight of dispersant, 5-6 parts by leveling agent, 1-2 parts by defoamer, 22-25 parts by water-based organic color paste , And 1-2 parts of anti-flash rust agent.

In a second aspect, the present disclosure provides a method for preparing the above-mentioned water-based spring paint. The raw materials are mixed to obtain the water-based spring paint.

In a third aspect, the present disclosure provides an application of the above-mentioned water-based spring paint in surface treatment of springs.

In a fourth aspect, the present disclosure provides a spring, including the above-mentioned water-based paint for the spring, and the water-based paint is attached to the surface of the spring base.

The beneficial effects of the present disclosure are:

The water-based spring paint provided by the present disclosure is mainly made of water-based epoxy modified acrylic resin, a specific water-based acrylic resin, adhesion promoter and water. The resins are all water-based resins, which are environmentally friendly, and the VOC emission can be as low as 5mg/L, much better than the VOC content of oil-based paint (300g/L); after the compounding of various raw materials, the water-based paint has good adhesion, flexibility and water resistance, and can effectively adhere to the spring surface. Reaching level 0, it will not fall off or corrode after 10 years of use, which greatly extends the service life of the spring.

Applying the above water-based spring paint to the surface treatment of the spring can improve the environmental protection of the spring. The surface paint layer of the spring has strong adhesion, is not easy to fall off, and the spring is not easy to corrode and has a longer service life.

Detailed ways

The embodiments of the present disclosure will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present disclosure and should not be regarded as limiting the scope of the present disclosure. If specific conditions are not indicated in the examples, it shall be carried out in accordance with the conventional conditions or the conditions recommended by the manufacturer.

It should be noted:

In the present disclosure, if there is no special description, all the embodiments and preferred implementation methods mentioned herein can be combined with each other to form a new technical solution.

In this disclosure, if there is no special description, all the technical features and preferred features mentioned in this article can be combined with each other to form a new technical solution.

In this disclosure, unless otherwise specified, the involved components or their preferred components can be combined with each other to form a new technical solution.

In this disclosure, unless otherwise specified, the numerical range "a-b" represents an abbreviated representation of any combination of real numbers between a and b, where both a and b are real numbers. For example, the numerical range "30-35" means that all real numbers between "30-35" have been listed in this article, and "30-35" is only an abbreviated representation of these numerical combinations.

Unless otherwise stated, the professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any method or material similar or equivalent to the recorded content can also be applied in the present disclosure.

According to one aspect of the present disclosure, in at least one embodiment, a water-based paint for spring is provided, which is mainly prepared from the following parts by weight: 30-35 parts of water-based epoxy-modified acrylic resin, and water-based acrylic resin 5-6 parts, 5-6 parts of adhesion promoter, and 28-30 parts of water;

The water-based acrylic resin includes at least one of water-based silicone modified acrylic resin, water-based methacrylic resin, water-based acrylate resin, or water-based methacrylate resin.

The aforementioned "spring" includes, but is not limited to, tension springs (or called extension springs), compression springs, torsion springs (or called torsion springs), or bending springs.

Waterborne epoxy-modified acrylic resin refers to the water-based resin obtained by modifying acrylic resin with epoxy resin. This resin combines the characteristics of epoxy resin and acrylic resin. Compared with other resins, this resin has more excellent properties. Adhesion, flexibility and corrosion resistance can improve the adhesion and flexibility of water-based paint on the surface of the spring.

In this disclosure, the typical but non-limiting content of water-based epoxy-modified acrylic resin is 30 parts, 30.5 parts, 31 parts, 31.5 parts, 32 parts, 32.5 parts, 33 parts, 33.5 parts, 34 parts by weight. Servings, 34.5 servings or 35 servings.

Water-based acrylic resin has the advantages of high mechanical strength, yellowing resistance, aging resistance and water resistance. In this disclosure, based on parts by weight, the typical but non-limiting content of water-based acrylic resin is 5 parts, 5.1 parts, 5.2 parts, 5.3 parts, 5.4 parts, 5.5 parts, 5.6 parts, 5.7 parts, 5.8 parts, 5.9 parts Or 6 servings. Water-based acrylic resins include but are not limited to the following: water-based silicone modified acrylic resins, water-based methacrylic resins, water-based acrylate resins, water-based methacrylate resins, water-based silicone-modified acrylic resins and water-based methacrylic resins The combination of water-based acrylic resin and water-based methacrylate resin, the combination of water-based silicone modified acrylic resin, water-based methacrylic resin and water-based acrylate resin, or the combination of water-based methacrylic resin, water-based acrylate resin and Combinations of water-based methacrylate resins, etc.

Adhesion promoter is a new type of resin-based adhesion promoter, which has special effects on the anti-shedding property of coatings, has wide solubility, can improve the adhesion of various coating systems, and can improve the adhesion and toughness of water-based paints . The aforementioned adhesion promoters include, but are not limited to, silane coupling agents, titanate coupling agents, zirconium coupling agents, alkyl phosphates, aryl phosphates, alkyl phosphate salts, organometallic compounds, modified high Molecular compounds or chlorinated polyolefins, etc.

In this disclosure, the typical but non-limiting content of adhesion promoters is 5 parts, 5.1 parts, 5.2 parts, 5.3 parts, 5.4 parts, 5.5 parts, 5.6 parts, 5.7 parts, 5.8 parts, 5.9 parts by weight. Servings or 6 servings.

Water is the dispersion medium of the above-mentioned water-based paint. In the present disclosure, the content of water is typically 28 parts, 28.5 parts, 29 parts, 29.5 parts or 30 parts by weight.

The above-mentioned water-based spring paint is mainly composed of water-based epoxy modified acrylic resin, specific water-based acrylic resin, adhesion promoter and water. The resins are all water-based resins, which are environmentally friendly, and the VOC emission can be as low as 5mg/L. , Far better than the VOC content of oil-based paint (300g/L); after the compounding of various raw materials, the water-based paint has good adhesion, flexibility and water resistance, and can effectively adhere to the spring surface, and the adhesion reaches 0 level , It will not fall off and corrode after 10 years of use, greatly extending the service life of springs and water-based paint. In addition, the water-based paint in the present disclosure may also include other raw materials, such as dispersants, leveling agents, defoamers, water-based organic color pastes, anti-flash rust agents, thickeners, wetting agents, water-based driers, and auxiliary materials. Solvents, neutralizers and film formers, etc. It should be understood by those skilled in the art that the above-mentioned raw materials can be selected according to specific types and contents according to actual needs, as long as the corresponding functions can be realized.

In a preferred embodiment, the water-based paint is mainly prepared from the following parts by weight of each raw material: 31-35 parts of water-based epoxy modified acrylic resin, 5.2-6 parts of water-based acrylic resin, adhesion promoter 5-5.8 parts, and 28.4-30 parts of water.

In a preferred embodiment, the water-based paint is mainly prepared from the following parts by weight: 32-34 parts of water-based epoxy modified acrylic resin, 5.3-5.8 parts of water-based acrylic resin, and adhesion promoter 5.2-5.6 parts, and 28.5-29.5 parts of water.

By further optimizing the content of each raw material, the combination of the raw materials is made more scientific and reasonable, thereby further improving the adhesion and flexibility of the water-based paint.

In a preferred embodiment, the hydroxyl value of the water-based epoxy-modified acrylic resin is 180-260 mgKOH/g, preferably 190-240KOH/g, and more preferably 200-240KOH/g. When the hydroxyl value of the water-based epoxy-modified acrylic resin is within the range of the preferred embodiment, the water-based paint has better flexibility and corrosion resistance.

In a preferred embodiment, the water-based acrylic resin is selected from water-based silicone modified acrylic resins.

Water-based silicone modified acrylic resin is composed of hydroxyl-containing acrylic resin, acrylic monomer or unsaturated bond-containing acrylate, respectively, and hydroxyl-containing siloxane, double bond-containing siloxane or active hydrogen-containing silane ( Or siloxane) a kind of water-based modified resin made by reaction, which has good physical and mechanical properties. In the silicone modified acrylic resin, the electronegativity of silicon and oxygen are quite different, which gives the resin heat resistance and oxidation resistance. The polysiloxane molecules have a spiral structure, and the methyl groups are arranged outwards to surround the Si -O bond rotation, large molecular volume, low cohesion density, so that it has the characteristics of water repellency, salt spray resistance, stain resistance and heat resistance.

In a preferred embodiment, the weight average molecular weight of the water-based silicone modified acrylic resin is 30,000 to 70,000. The weight average molecular weight of the water-based silicone modified acrylic resin is typically but not limited to 30,000, 35,000, 40,000, 45,000, 50,000, 55,000, 60,000, 65,000 or 70,000. When the weight average molecular weight of the water-based silicone modified acrylic resin is within the above range, the performance of the resulting water-based paint is better.

In a preferred embodiment, the water-based paint also includes the following raw materials in parts by weight: 3-4 parts by weight of dispersant, 5-6 parts of leveling agent, 1-2 parts of defoamer, and 22-part water-based organic colorant. 25 parts, and 1-2 parts of anti-flash rust agent.

The dispersant can uniformly disperse the raw materials in the water-based paint, enhance the dispersion performance of the water-based organic color paste in the water-based paint, and improve the uniformity, storage stability and anti-aging performance of the product. Dispersants include, but are not limited to, nano-titanium dioxide, talc, trisodium phosphate, sodium metasilicate, sodium disilicate, alkylbenzene sulfonate, sorbitol alkylate, polyoxyethylene alkylphenol ether, polyoxyethylene Vinylpyrrolidone or polyethylene glycol, etc. In this disclosure, the content of the dispersant in parts by weight is typically but not limited to 3 parts, 3.1 parts, 3.2 parts, 3.3 parts, 3.4 parts, 3.5 parts, 3.6 parts, 3.7 parts, 3.8 parts, 3.9 parts Or 4 servings.

The leveling agent can effectively reduce the surface tension of the water-based paint, improve its leveling and uniformity, improve the permeability of the coating liquid, reduce the possibility of spots and marks during brushing, increase coverage, and make the film formation uniform and natural. Leveling agents include, but are not limited to, polyether modified silicone leveling agents, polyester modified silicone leveling agents, alkyl modified silicone leveling agents, polyacrylate leveling agents, cellulose acetate leveling agents Agent or polyvinyl butyral leveling agent. In this disclosure, the content of the leveling agent is typically but not limited to 5 parts, 5.1 parts, 5.2 parts, 5.3 parts, 5.4 parts, 5.5 parts, 5.6 parts, 5.7 parts, 5.8 parts, 5.9 parts by weight. Servings or 6 servings.

The defoamer can reduce the surface tension of the water-based paint, inhibit the generation of foam, thereby reducing the bubbles in the water-based paint during the coating process, and enhance the uniformity of the water-based paint coating, thereby improving its adhesion and reducing the phenomenon of shedding. Antifoaming agents include, but are not limited to, tributyl phosphate antifoaming agent, foam breaking silicone antifoaming agent, octanol antifoaming agent or silicone oil antifoaming agent, etc. In the present disclosure, in terms of parts by weight, the content of the defoamer is typically but not limited as 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts. Servings or 2 servings.

Water-based organic color pastes are mainly used for toning, which can give water-based paints corresponding colors. Choose different colors of water-based organic color pastes according to actual needs. The color of water-based organic colorant includes blue, green, yellow, red or black. In the present disclosure, the content of the aqueous organic colorant is typically but not limited to 22 parts, 22.5 parts, 23 parts, 23.5 parts, 24 parts, 24.5 parts or 25 parts by weight.

The anti-flash rust agent is mainly used to inhibit the generation of flash rust in water-based paint. Because the above-mentioned water-based paint uses water as the dispersion medium, the latent heat of evaporation of water is larger. Compared with oil-based paint, the dispersion medium evaporates slowly and the contact time between water and metal surface is longer Long, easy to produce flash rust, and seriously affect the anti-corrosion performance of water-based paint. Anti-flash rust agents include but are not limited to nitrite anti-flash rust agents, benzoate anti-flash rust agents or modified metal chelate anti-flash rust agents. In this disclosure, based on parts by weight, the content of the anti-flash rust agent is typically but not limited as 1 part, 1.1 parts, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts or 2 parts.

In this preferred embodiment, a specific content of dispersant, leveling agent, defoamer, water-based organic color paste and anti-flash rust agent are further added. The above-mentioned raw materials are combined with water-based epoxy modified acrylic resin, water-based acrylic resin, and adhesion promotion The agent and water work together to form a water-based paint with excellent performance. The water-based paint has excellent adhesion, excellent flexibility and corrosion resistance, and extremely low VOC emission.

According to another aspect of the present disclosure, in at least one embodiment, there is provided a method for preparing the above-mentioned water-based spring paint. The raw materials are mixed to obtain the water-based spring paint. The method has simple process, only needs to mix the raw materials, and is suitable for industrial production.

According to another aspect of the present disclosure, in at least one embodiment, there is provided an application of the above-mentioned water-based spring paint for spring surface treatment. Applying the above-mentioned water-based spring paint to the surface treatment of the spring can improve the environmental protection of the spring. The surface paint layer of the spring has strong adhesion, is not easy to fall off, and the spring is not easy to corrode and has a longer service life.

The water-based paint of the present disclosure is specially developed for springs. The water-based paint has good adhesion and flexibility, so it is suitable for applications on the surface with relatively smooth and curved springs. The paint is not easy to fall off and the spring is not easy to corrode. And other phenomena, the service life is longer. However, the existing oil-based paint is not only poor in environmental protection, but also has poor adhesion and flexibility. Therefore, it is very easy to fall off when attached to the surface of the spring, which will cause the spring to corrode and reduce the service life.

It should be noted that the specific application method of the above-mentioned water-based spring paint in the surface treatment of the spring can be any existing method that can be realized, for example, spraying or dipping, etc., which is not particularly limited in the present disclosure.

According to another aspect of the present disclosure, in at least one embodiment, a spring is provided, including the above-mentioned water-based paint for the spring, and the water-based paint is attached to the surface of the spring base. The spring includes the above-mentioned water-based paint for the spring, and therefore has the advantages of not easy to crack and fall off, long service life, and good environmental protection.

The present disclosure will be further described in detail below in conjunction with examples and comparative examples.

Example 1

A spring water-based paint, mainly prepared from the following parts by weight: 30 parts of water-based epoxy modified acrylic resin, 6 parts of water-based methacrylate resin, silane coupling agent kh-590 (Nanjing forward Chemical Co., Ltd.) 6 parts, 28 parts water;

The weight average molecular weight of the water-based methacrylate resin is 100,000;

The hydroxyl value of the water-based epoxy-modified acrylic resin is 150 mg KOH/g.

Example 2

A spring water-based paint, mainly prepared from the following parts by weight: 35 parts of waterborne epoxy modified acrylic resin, 5 parts of waterborne silicone modified acrylic resin, titanate coupling agent TMC-143 ( Suzhou Fulu Biotechnology Co., Ltd.) 5 parts, water 30 parts;

The weight average molecular weight of the water-based silicone modified acrylic resin is 100,000;

The hydroxyl value of the water-based epoxy-modified acrylic resin is 280 mg KOH/g.

Example 3

A spring water-based paint, mainly prepared from the following parts by weight: 33 parts of water-based epoxy modified acrylic resin, 5.5 parts of water-based silicone modified acrylic resin, HD-M8133 amino functional silane (Qingdao Heng Dazhongcheng Technology Co., Ltd.) 5.5 parts, water 28.5 parts;

The weight average molecular weight of the water-based silicone-modified acrylic resin is 20,000; the hydroxyl value of the water-based epoxy-modified acrylic resin is 100 mg KOH/g.

Example 4-5

A spring water-based paint. The difference from Example 3 is that the hydroxyl values of the water-based epoxy-modified acrylic resin in Examples 4-5 are 180 and 260 KOH/g, respectively.

The hydroxyl value of the water-based epoxy-modified acrylic resin in Examples 4-5 is within the preferred range of the present disclosure.

Example 6

A water-based paint for springs. The difference from Example 5 is that the weight average molecular weight of the water-based silicone modified acrylic resin in Example 6 is 50,000.

The weight average molecular weight of the aqueous silicone modified acrylic resin in Example 6 is within the preferred range of the present disclosure.

Example 7

A spring water-based paint. Different from Example 6, the water-based paint of this example also includes the following raw materials by weight: 3.5 parts of polyvinylpyrrolidone, 5.5 parts of alkyl modified silicone leveling agent, and 1.5 parts of alcohol defoaming agent, 24 parts of aqueous organic color paste, 1.5 parts of benzoate anti-flash rust agent.

The preparation method of each of the above-mentioned water-based spring paints includes: mixing various raw materials in a formula amount to obtain the water-based spring paint.

Comparative example 1

A spring water-based paint is prepared from the following parts by weight: 36 parts of water-based methacrylate resin, kh-5906 parts of silane coupling agent, and 28 parts of water.

Comparative example 2

A spring water-based paint, mainly prepared from the following parts by weight: 25 parts of water-based epoxy modified acrylic resin, 7 parts of water-based methacrylate resin, silane coupling agent kh-5907 parts, water 31 parts Copies

The hydroxyl value of the water-based epoxy-modified acrylic resin is 150 mg KOH/g.

The difference from Example 1 is that the content of each raw material in this comparative example is not within the range provided by the present disclosure.

Comparative example 3

Spring paint (Shenzhen Bofulong Environmental Coating Technology Co., Ltd.).

Performance Testing

The paints in each embodiment and each comparative example were used to spray paint on the tension spring. The process includes: electrostatic spraying paint on the clean spring substrate. The spray paint layer is 40 microns thick, and then it is cured and the paint adheres. On the surface of the spring base. The following test methods were used to test each paint layer, and the test results are listed in Table 1.

VOC test : Sampling is carried out according to GB/T 3186-2006 "Sampling of Paints, Varnishes and Raw Materials for Paints and Varnishes", and the content of volatile organic compounds is determined by gas chromatography.

Gloss test : Use the portable miniature gloss meter AG-4442 from BYK, Germany, and measure at 60°.

Adhesion test : Measured in accordance with GB/T 9286-1998. The result judgment method is divided into 5 levels: Level 0: The cutting edge is completely smooth, without a grid falling off; Level 1: A little coating falls off at the intersection of the incision, However, the cross-cut area cannot be significantly affected by more than 5%; Level 2: The coating is peeled off at the intersection of the incision and/or the edge of the incision, and the affected cross-cut area is significantly greater than 5% and less than 15%; Level 3: Coating edge Part or all of the cutting edges fall off with large fragments, and/or partially or completely peel off on different parts of the grid, the affected cross cutting area is significantly larger than 15%, less than 35%; Level 4: The coating peels off with large fragments along the cutting edge , And/or some or all of the squares are peeled off, and the affected cross-cut area is significantly larger than 35% and less than 65%; Level 5: The affected cross-cut area is significantly larger than 65%.

Flexibility test : Use BYK cylindrical bending tester 5710 (Germany) to perform flexibility test with cylindrical shaft in accordance with GB/T6742-2007 to observe the cracking and shedding of the paint film.

Impact resistance test : Use Kunshan Sannuo Instrument Paint Film Impact Tester QCJ-1m to measure in accordance with GB/T1732-1993 to observe whether the paint film has cracks, wrinkles, etc.

Table 1

Group	VOC	luster	Adhesion	Flexibility	Impact resistance
Example 1	8mg/L	60	Level 1	1mm	40cm
Example 2	8mg/L	70	Level 1	2mm	40cm
Example 3	7mg/L	80	Level 1	2mm	40cm
Example 4	6mg/L	85	Level 1	2mm	50cm
Example 5	5mg/L	90	Level 0	2mm	50cm
Example 6	5mg/L	95	Level 0	2mm	50cm
Example 7	5mg/L	100	Level 0	2mm	50cm
Comparative example 1	38mg/L	45	Level 1	1mm	40cm
Comparative example 2	24mg/L	50	level 2	1mm	40cm
Comparative example 3	400g/L	80	Level 1	1mm	40cm

It can be seen from Table 1 that the overall performance of Examples 1-7 is better than that of Comparative Examples 1-3, indicating that the water-based spring paint provided by the present disclosure has better environmental protection, high gloss, and higher adhesion on the spring surface , Strong flexibility, not easy to crack, and strong impact resistance. Using existing paint or changing the composition or content of raw materials will make the effect worse.

Further analysis shows that the comprehensive performance of Example 4-5 is better than that of Example 3, indicating that the hydroxyl value of the preferred waterborne epoxy modified acrylic resin of the present disclosure can further improve the performance of the waterborne paint; the comprehensive performance of Example 6 is better than Examples 4-5 show that using the weight average molecular weight of the preferred water-based silicone modified acrylic resin of the present disclosure can further improve the performance of the water-based paint; the overall performance of Example 7 is better than that of Example 6, which shows that specific raw materials with specific content are increased Can further improve the performance of water-based paint.

Although specific embodiments have been used to illustrate and describe the present disclosure, it should be appreciated that many other changes and modifications can be made without departing from the spirit and scope of the present disclosure. Therefore, this means that all these changes and modifications that fall within the scope of the present disclosure are included in the appended claims.

Claims (10)

1. A water-based paint for springs, which is characterized in that it is mainly prepared from the following parts by weight: 30-35 parts of water-based epoxy modified acrylic resin, 5-6 parts of water-based acrylic resin, and adhesion promoter 5- 6 parts, and 28-30 parts of water;

   The water-based acrylic resin includes at least one of water-based silicone modified acrylic resin, water-based methacrylic resin, water-based acrylate resin, or water-based methacrylate resin.
2. The water-based spring paint according to claim 1, wherein the water-based paint is mainly prepared from the following parts by weight: 31-35 parts of water-based epoxy-modified acrylic resin, and 5.2-parts of water-based acrylic resin 6 parts, 5-5.8 parts of adhesion promoter, and 28.4-30 parts of water.
3. The water-based spring paint according to claim 1, wherein the water-based paint is mainly prepared from the following parts by weight of each raw material: 32-34 parts of water-based epoxy modified acrylic resin, and 5.3-part of water-based acrylic resin 5.8 parts, 5.2-5.6 parts of adhesion promoter, and 28.5-29.5 parts of water.
4. The water-based spring paint according to claim 1, wherein the hydroxyl value of the water-based epoxy-modified acrylic resin is 180-260mg KOH/g, preferably 190-240KOH/g, more preferably 200-240KOH /g.
5. The water-based spring paint according to claim 1, wherein the water-based acrylic resin is selected from water-based silicone modified acrylic resin.
6. The water-based spring paint of claim 5, wherein the weight average molecular weight of the water-based silicone modified acrylic resin is 30,000-70,000.
7. The water-based spring paint according to any one of claims 1-6, wherein the water-based paint further comprises the following raw materials in parts by weight: 3-4 parts by weight of dispersant, 5-6 parts by leveling agent, defoaming 1-2 parts of water-based organic colorant, 22-25 parts of water-based organic color paste, and 1-2 parts of anti-flash rust agent.
8. The preparation method of the water-based spring paint according to any one of claims 1-7, wherein the raw materials are mixed to obtain the water-based spring paint.
9. The application of the water-based spring paint of any one of claims 1-7 in the surface treatment of springs.
10. A spring, characterized by comprising the water-based spring paint of any one of claims 1-7, the water-based paint attached to the surface of the spring base.