阅读说明：本技术 高耐磨高手感度橡胶涂料及其制备方法 (High-wear-resistance high-hand-sensitivity rubber coating and preparation method thereof ) 是由 罗政 刘峰 龚浩 于 2021-06-29 设计创作，主要内容包括：本发明提供了一种高耐磨高手感度橡胶涂料及其制备方法。所述高耐磨高手感度橡胶涂料的制备方法,包括：称取20-50份重量的聚氨酯树脂乳液以及10-20份重量的羟基丙烯酸树脂乳液混合搅拌均匀；边搅边加入0.1-0.5份重量的消泡剂以及0.2-0.5份重量的中和剂,控制转速800-1200R/mi n分散5-10分钟；降低转速至700-900R/mi n并加入1-5份重量的流变剂,均匀分散；将3-8份重量的成膜助剂以及8-15份重量的去离子水预先混合均匀,然后边搅边加入,均匀分散；边搅边加1-2份重量的消光粉分散至细度≤20微米；最后将1-5份重量的手感助剂、0.1-0.5份重量的润湿剂以及0.2-0.5份重量的流平剂边搅边分别加入,均匀分散得到高耐磨高手感度橡胶涂料。(The invention provides a high-abrasion-resistance high-hand-sensitivity rubber coating and a preparation method thereof. The preparation method of the high-abrasion-resistance and high-hand-sensitivity rubber coating comprises the following steps: weighing 20-50 parts by weight of polyurethane resin emulsion and 10-20 parts by weight of hydroxyl acrylic resin emulsion, and uniformly mixing and stirring; adding 0.1-0.5 part by weight of defoaming agent and 0.2-0.5 part by weight of neutralizing agent while stirring, and controlling the rotation speed of 800-; reducing the rotation speed to 700-900R/min and adding 1-5 parts by weight of rheological agent for uniform dispersion; 3-8 parts of film-forming assistant and 8-15 parts of deionized water are uniformly mixed in advance, and then are added while stirring, and are uniformly dispersed; adding 1-2 parts by weight of matting powder while stirring and dispersing until the fineness is less than or equal to 20 microns; finally, 1-5 parts by weight of hand feeling auxiliary agent, 0.1-0.5 part by weight of wetting agent and 0.2-0.5 part by weight of flatting agent are respectively added while stirring, and the rubber coating with high wear resistance and high hand feeling is obtained by uniform dispersion.)

1. A high-abrasion-resistance high-hand-sensitivity rubber coating is characterized by comprising: 20-50 parts of polyurethane resin emulsion, 10-20 parts of hydroxyl acrylic resin emulsion, 3-8 parts of film forming additive, 0.1-0.5 part of defoaming agent, 0.2-0.5 part of neutralizing agent, 1-5 parts of hand feeling additive, 1-2 parts of matting powder, 8-15 parts of deionized water, 1-5 parts of rheological agent, 0.1-0.5 part of wetting agent and 0.2-0.5 part of leveling agent.

2. The high abrasion resistant high hand feel rubber coating of claim 1 wherein said film forming aid comprises one or more of ethylene glycol monobutyl ether, diethylene glycol butyl ether, dipropylene glycol methyl ether and dipropylene glycol butyl ether.

3. The high abrasion-resistant high hand-feel rubber coating according to claim 1, wherein said rheological agent is nano titanium dioxide.

4. The high abrasion-resistant high hand-feeling rubber coating according to claim 1, wherein the leveling agent is a type 1073 or 1074 polysiloxane acrylic leveling agent.

5. A preparation method of a high-abrasion-resistance high-hand-sensitivity rubber coating is characterized by comprising the following steps:

s1, weighing 20-50 parts by weight of polyurethane resin emulsion and 10-20 parts by weight of hydroxyl acrylic resin emulsion, and uniformly mixing and stirring;

s2, adding 0.1-0.5 part by weight of defoaming agent and 0.2-0.5 part by weight of neutralizing agent while stirring, and controlling the rotation speed at 800-;

s3, reducing the rotating speed to 700-900R/min and adding 1-5 parts by weight of rheological agent for uniform dispersion;

s4, pre-mixing 3-8 parts by weight of film-forming aid and 8-15 parts by weight of deionized water uniformly, and then adding while stirring for uniform dispersion;

s5, adding 1-2 parts by weight of matting powder while stirring and dispersing until the fineness is less than or equal to 20 microns;

and S6, finally, adding 1-5 parts by weight of hand feeling auxiliary agent, 0.1-0.5 part by weight of wetting agent and 0.2-0.5 part by weight of flatting agent respectively while stirring, and uniformly dispersing to obtain the high-wear-resistance high-hand-sensitivity rubber coating.

6. The method of claim 5, wherein in step S3, the rheological agent is nano-titania, and in step S3, the method further comprises irradiating the nano-titania with UV light to increase the hydrophilicity.

7. The method for preparing the rubber coating with high abrasion resistance and high hand sensitivity according to claim 6, wherein the irradiation time for irradiating the nano titanium dioxide with UV light to improve the hydrophilicity is 5 to 10 minutes.

Technical Field

The invention relates to a high-abrasion-resistance high-hand-sensitivity rubber coating and a preparation method thereof.

Background

The hand feeling paint is also called as rubber paint and elastic paint, is sprayed on the surface of an object, is in a matte or semi-matte state, has quite fine and smooth hand feeling, elegant appearance, high bulkiness, and excellent scratch resistance, weather resistance and wear resistance.

3c products plastic shell flexible feel coatings are currently popular with plastic product processors, but the problem that many coating suppliers and plastic appearance processors are currently very painful is often: both good rubber touch and excellent coating properties are not compatible. Many manufacturers often increase the proportion of the curing agent to enhance the RCA resistance of the coating, and this is premised on the loss of good rubbery elastic touch, although the abrasion resistance of the coating with elastic touch can be improved.

Disclosure of Invention

The invention provides a high-abrasion-resistance high-hand-sensitivity rubber coating and a preparation method thereof, which can effectively solve the problems.

The invention is realized by the following steps:

the invention provides a high-abrasion-resistance high-hand-sensitivity rubber coating, which comprises the following components in percentage by weight: 20-50 parts of polyurethane resin emulsion, 10-20 parts of hydroxyl acrylic resin emulsion, 3-8 parts of film forming additive, 0.1-0.5 part of defoaming agent, 0.2-0.5 part of neutralizing agent, 1-5 parts of hand feeling additive, 1-2 parts of matting powder, 8-15 parts of deionized water, 1-5 parts of rheological agent, 0.1-0.5 part of wetting agent and 0.2-0.5 part of leveling agent.

The invention further provides a preparation method of the high-abrasion-resistance high-hand-sensitivity rubber coating, which comprises the following steps:

s1, weighing 20-50 parts by weight of polyurethane resin emulsion and 10-20 parts by weight of hydroxyl acrylic resin emulsion, and uniformly mixing and stirring;

s2, adding 0.1-0.5 part by weight of defoaming agent and 0.2-0.5 part by weight of neutralizing agent while stirring, and controlling the rotation speed at 800-;

s3, reducing the rotating speed to 700-900R/min and adding 1-5 parts by weight of rheological agent for uniform dispersion;

s4, pre-mixing 3-8 parts by weight of film-forming aid and 8-15 parts by weight of deionized water uniformly, and then adding while stirring for uniform dispersion;

s5, adding 1-2 parts by weight of matting powder while stirring and dispersing until the fineness is less than or equal to 20 microns;

and S6, finally, adding 1-5 parts by weight of hand feeling auxiliary agent, 0.1-0.5 part by weight of wetting agent and 0.2-0.5 part by weight of flatting agent respectively while stirring, and uniformly dispersing to obtain the high-wear-resistance high-hand-sensitivity rubber coating.

The invention has the beneficial effects that: the high-abrasion-resistance high-hand-sensitivity rubber coating provided by the invention is a water-based environment-friendly coating, has the characteristics of strong skin feel, excellent abrasion resistance and the like, and also has the advantages of excellent chemical resistance, convenience in construction, cost saving and environmental protection.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a flow chart of a method for preparing a high abrasion-resistant high-hand-sensitivity rubber coating provided by an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, the present invention further provides a high abrasion-resistant high hand-feel rubber coating, comprising: 20-50 parts of polyurethane resin emulsion, 10-20 parts of hydroxyl acrylic resin emulsion, 3-8 parts of film forming additive, 0.1-0.5 part of defoaming agent, 0.2-0.5 part of neutralizing agent, 1-5 parts of hand feeling additive, 1-2 parts of matting powder, 8-15 parts of deionized water, 1-5 parts of rheological agent, 0.1-0.5 part of wetting agent and 0.2-0.5 part of leveling agent.

As a further improvement, the film forming auxiliary agent comprises one or more of ethylene glycol monobutyl ether, diethylene glycol butyl ether, dipropylene glycol methyl ether and dipropylene glycol butyl ether. In one embodiment, the coalescent is ethylene glycol monobutyl ether.

As a further improvement, the rheological agent is nano titanium dioxide. The neutralizing agent is selected from the group consisting of overbased organic amines, and in one embodiment, the neutralizing agent is selected from the group consisting of BG95 overbased organic amines. The hand feeling auxiliary agent can be selected from SY-317 aqueous dry and smooth hand feeling agent or SY-8211 smooth hand feeling agent. In one embodiment, the hand feel aid is selected from SY-317 aqueous dry slippery hand feel agents. The matting powder can be NABOB-K-12, K-10 or K-15 matting powder. In one embodiment, the matting agent can be NABOB-K-12 aqueous matting agent. The wetting agent is selected from acetylene glycol surface active agents. In one embodiment, the wetting agent is a pentyne diol surfactant. The leveling agent is selected from isophorone or diacetone alcohol. In one embodiment, the leveling agent is isophorone.

As a further improvement, the flatting agent is a 1073 or 1074 type polysiloxane acrylic flatting agent.

Referring to fig. 1, the invention further provides a preparation method of the high abrasion-resistant high hand-feel rubber coating, comprising the following steps:

s1, weighing 20-50 parts by weight of polyurethane resin emulsion and 10-20 parts by weight of hydroxyl acrylic resin emulsion, and uniformly mixing and stirring;

s2, adding 0.1-0.5 part by weight of defoaming agent and 0.2-0.5 part by weight of neutralizing agent while stirring, and controlling the rotation speed at 800-;

s3, reducing the rotating speed to 700-900R/min and adding 1-5 parts by weight of rheological agent for uniform dispersion;

s4, pre-mixing 3-8 parts by weight of film-forming aid and 8-15 parts by weight of deionized water uniformly, and then adding while stirring for uniform dispersion;

s5, adding 1-2 parts by weight of matting powder while stirring and dispersing until the fineness is less than or equal to 20 microns;

and S6, finally, adding 1-5 parts by weight of hand feeling auxiliary agent, 0.1-0.5 part by weight of wetting agent and 0.2-0.5 part by weight of flatting agent respectively while stirring, and uniformly dispersing to obtain the high-wear-resistance high-hand-sensitivity rubber coating.

As a further improvement, in step S2, the reason for reducing the rotation speed can prevent the generation of bubbles due to too high rotation speed, and prevent the local overheating and coarsening phenomenon due to the viscosity increase caused by the powder addition during the stirring process. More preferably, the rotation speed is reduced to 800R/min.

As a further improvement, in step S3, the rheological agent is nano titanium dioxide, and in step S3, the method further comprises irradiating the nano titanium dioxide with UV light to increase the hydrophilicity thereof.

As a further improvement, the irradiation time for irradiating the nano titanium dioxide with UV light to improve the hydrophilicity is 5-10 minutes. Because the hydrophilic property of the nano titanium dioxide can be changed along with the irradiation of the UV light, the hydrophilic property of the nano titanium dioxide can be improved by irradiating the nano titanium dioxide with the UV light before mixing, and the overall rheological property of the coating is further changed.

Example 1

Weighing 40 parts by weight of polyurethane resin emulsion and 15 parts by weight of hydroxyl acrylic resin emulsion, and uniformly mixing and stirring; adding 0.3 part by weight of defoaming agent and 0.4 part by weight of neutralizing agent while stirring, and controlling the rotating speed to 1100R/min for dispersing for 10 minutes; reducing the rotating speed to 800R/min, adding 3 parts by weight of nano titanium dioxide (not subjected to UV irradiation), and uniformly dispersing; 5 parts by weight of film-forming additive (ethylene glycol monobutyl ether) and 10 parts by weight of deionized water are mixed uniformly in advance, and then the mixture is added while stirring and is dispersed uniformly; adding 1 part by weight of matting powder while stirring and dispersing until the fineness is less than or equal to 20 microns; and finally, respectively adding 3 parts by weight of hand feeling auxiliary agent, 0.3 part by weight of wetting agent and 0.4 part by weight of flatting agent while stirring, and uniformly dispersing to obtain the high-wear-resistance high-hand-feeling rubber coating.

Test example: the rubber coating in example 1 was tested as follows, and the test results are shown in table 1.

Table 1 shows the test data of the rubber coating in example 1

Example 2

Weighing 40 parts by weight of polyurethane resin emulsion and 15 parts by weight of hydroxyl acrylic resin emulsion, and uniformly mixing and stirring; adding 0.3 part by weight of defoaming agent and 0.4 part by weight of neutralizing agent while stirring, and controlling the rotating speed to 1100R/min for dispersing for 10 minutes; reducing the rotating speed to 800R/min, adding 3 parts by weight of nano titanium dioxide (subjected to UV irradiation for 10 minutes), and uniformly dispersing; 5 parts of film-forming additive and 10 parts of deionized water are mixed uniformly in advance, and then the mixture is added while stirring and is dispersed uniformly; adding 1 part by weight of matting powder while stirring and dispersing until the fineness is less than or equal to 20 microns; and finally, respectively adding 3 parts by weight of hand feeling auxiliary agent, 0.3 part by weight of wetting agent and 0.4 part by weight of flatting agent while stirring, and uniformly dispersing to obtain the high-wear-resistance high-hand-feeling rubber coating.

Test example: the rubber coating in example 2 was tested as follows, and the test results are shown in table 2.

Table 2 shows the test data of the rubber coating in example 2

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.