阅读说明：本技术 一种具有防指纹功能的复合抗菌基材 (Composite antibacterial base material with anti-fingerprint function ) 是由 王春生 张荣晋 孙爽 于 2020-12-07 设计创作，主要内容包括：本发明公开了一种具有防指纹功能的复合抗菌基材,包括从下至上依次设置的基材、二氧化硅膜层、抗菌涂层和防指纹涂层；抗菌涂层的制备原料按照质量份数包括以下组分：水性环氧树脂40～60份、纳米抗菌剂5～10份、填料20～30份、润湿分散剂0.5～1.5份、去离子水15～20份；防指纹涂层的制备原料按照质量份数包括以下组分：氟碳树脂40～50份、疏水改性粒子5～10份、粒子分散剂1～3份、溶剂45～65份；疏水改性粒子是利用钛酸钾晶须-二氧化硅复合粒子经氨基硅油改性制得。该复合抗菌基材具有较好的抗菌效果和防指纹抗污功能,且其涂层与基材的结合力大,涂层的耐磨性好,不易脱落,抗菌、防指纹功能的持久性好。(The invention discloses a composite antibacterial base material with an anti-fingerprint function, which comprises a base material, a silicon dioxide film layer, an antibacterial coating and an anti-fingerprint coating which are sequentially arranged from bottom to top; the antibacterial coating comprises the following raw materials in parts by mass: 40-60 parts of water-based epoxy resin, 5-10 parts of nano antibacterial agent, 20-30 parts of filler, 0.5-1.5 parts of wetting dispersant and 15-20 parts of deionized water; the anti-fingerprint coating comprises the following raw materials in parts by mass: 40-50 parts of fluorocarbon resin, 5-10 parts of hydrophobic modified particles, 1-3 parts of particle dispersant and 45-65 parts of solvent; the hydrophobic modified particles are prepared by modifying potassium titanate whisker-silicon dioxide composite particles by amino silicone oil. The composite antibacterial substrate has good antibacterial effect and anti-fingerprint and anti-fouling functions, the binding force between the coating and the substrate is large, the coating has good wear resistance and is not easy to fall off, and the durability of the antibacterial and anti-fingerprint functions is good.)

1. The utility model provides a compound antibiotic substrate with prevent fingerprint function which characterized in that: the anti-fingerprint coating comprises a substrate, a silicon dioxide film layer arranged on the surface of the substrate, an antibacterial coating arranged on the silicon dioxide film layer and an anti-fingerprint coating arranged on the antibacterial coating;

the antibacterial coating comprises the following raw materials in parts by mass: 40-60 parts of water-based epoxy resin, 5-10 parts of nano antibacterial agent, 20-30 parts of filler, 0.5-1.5 parts of wetting dispersant and 15-20 parts of deionized water;

the anti-fingerprint coating comprises the following raw materials in parts by mass: 40-50 parts of fluorocarbon resin, 5-10 parts of hydrophobic modified particles, 1-3 parts of particle dispersant and 45-65 parts of solvent; the hydrophobic modified particles are prepared by modifying potassium titanate whisker-silicon dioxide composite particles through amino silicone oil.

2. The composite antibacterial base material with the fingerprint preventing function as claimed in claim 1, wherein: the substrate is one of a glass substrate, a PC substrate or a metal substrate.

3. The composite antibacterial base material with the fingerprint preventing function as claimed in claim 1, wherein: the silicon dioxide film layer is plated on the base material in a vacuum coating mode.

4. The composite antibacterial base material with the fingerprint preventing function as claimed in claim 1, wherein: the antibacterial coating and the anti-fingerprint coating are both prepared by a spraying method.

5. The composite antibacterial base material with the fingerprint preventing function as claimed in claim 1, wherein: the nano antibacterial agent is at least one of a nano silver ion antibacterial agent, a nano zinc oxide antibacterial agent and a nano titanium oxide antibacterial agent.

6. The composite antibacterial base material with the fingerprint preventing function as claimed in claim 1, wherein: the filler in the antibacterial coating is selected from at least one of barite powder, barium sulfate powder, talcum powder and mica powder.

7. The composite antibacterial base material with the fingerprint preventing function as claimed in claim 1, wherein: the potassium titanate whisker-silicon dioxide composite particle is prepared by loading nano silicon dioxide on potassium titanate whisker by a sol-gel method.

8. The composite antibacterial base material with the fingerprint preventing function as claimed in claim 1, wherein: the solvent is ethyl acetate or ethanol.

Technical Field

The invention belongs to the technical field of coating materials, and particularly relates to a composite antibacterial base material with a fingerprint prevention function.

Background

Along with the continuous improvement of the living standard of people, the popularization rate of electronic products such as computers, liquid crystal televisions, smart phones and the like is higher and higher, and the requirements of people on the performance and the appearance are also higher and higher; in the production, transportation and use processes of electronic products, fingerprints or dirt are easy to adhere to the surfaces of the electronic products, so that the attractiveness of the products is affected, and the product performance is affected due to the phenomenon of rusting and corrosion after a long time.

In addition, in the use process of the electronic product, the electronic product is frequently touched by hands or contacted with other objects, so that the accumulation of pathogenic bacteria is easily caused, the propagation and the spread of the bacteria are further caused, and the body health of a user is influenced.

Disclosure of Invention

In order to solve the above technical problems, an object of the present invention is to provide a composite antibacterial base material having an anti-fingerprint function. The antibacterial substrate is provided with the silicon dioxide film layer, the antibacterial coating and the anti-fingerprint coating, has a good antibacterial effect and an anti-fingerprint anti-fouling function, is high in binding force between the antibacterial coating and the anti-fingerprint coating and the substrate, good in wear resistance of the coating and not easy to fall off, and therefore the durability of the antibacterial and anti-fingerprint functions is guaranteed.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

a composite antibacterial base material with an anti-fingerprint function comprises a base material, a silicon dioxide film layer arranged on the surface of the base material, an antibacterial coating arranged on the silicon dioxide film layer and an anti-fingerprint coating arranged on the antibacterial coating;

the antibacterial coating comprises the following raw materials in parts by mass: 40-60 parts of water-based epoxy resin, 5-10 parts of nano antibacterial agent, 20-30 parts of filler, 0.5-1.5 parts of wetting dispersant and 15-20 parts of deionized water;

the anti-fingerprint coating comprises the following raw materials in parts by mass: 40-50 parts of fluorocarbon resin, 5-10 parts of hydrophobic modified particles, 1-3 parts of particle dispersant and 45-65 parts of solvent; the hydrophobic modified particles are prepared by modifying potassium titanate whisker-silicon dioxide composite particles through amino silicone oil.

Further, the substrate is one of a glass substrate, a PC substrate, or a metal substrate.

Furthermore, the silicon dioxide film layer is plated on the substrate in a vacuum coating mode.

Furthermore, the antibacterial coating and the anti-fingerprint coating are both prepared by a spraying method.

Further, the nano antibacterial agent is at least one of a nano silver ion antibacterial agent, a nano zinc oxide antibacterial agent and a nano titanium oxide antibacterial agent.

Furthermore, the filler in the antibacterial coating is selected from at least one of barite powder, barium sulfate powder, talcum powder and mica powder.

Further, the potassium titanate whisker-silica composite particle is prepared by loading nano silica on potassium titanate whisker by a sol-gel method.

Further, the solvent is ethyl acetate or ethanol.

The invention has the beneficial effects that:

(1) according to the invention, the surface of the base material is plated with the silicon dioxide film layer in a vacuum coating mode, the silicon dioxide film layer is used as a pretreatment priming layer of the antibacterial coating, strong binding force is formed between the silicon dioxide film layer and the base material, and the silicon dioxide film layer also forms a rough structure surface, so that the binding force between the silicon dioxide film layer and the base material and the roughness of the silicon dioxide film layer enable the antibacterial coating and the base material to have good binding force, the antibacterial coating and the anti-fingerprint coating on the antibacterial coating can be prevented from falling off, and the durability of the antibacterial and anti-fingerprint functions is improved.

(2) The fingerprint-resistant coating is formed by fluorocarbon resin and specially-made hydrophobic modified particles, wherein the fluorocarbon resin has lower surface energy and good hydrophobic property, and can be used as a film-forming agent to be matched with the hydrophobic modified particles to form a super-hydrophobic fingerprint-resistant coating; wherein the hydrophobic modified particles are prepared by modifying potassium titanate whisker-silicon dioxide composite particles by amino silicone oil, and the potassium titanate whisker and SiO₂The particles are combined to form a super-hydrophobic microstructure, and the polarity of the amino silicone oil can be utilized to strengthen potassium titanate whisker and SiO₂The bonding force among particles, and the amino silicone oil can form an umbrella-shaped structure in the coating layer due to the methyl group of the amino silicone oil, so that the amino silicone oil has strong hydrophobicity; therefore, hydrophobic modified particles formed by matching the potassium titanate whiskers, the silicon dioxide particles and the amino silicone oil have excellent hydrophobicity, so that the hydrophobic modified particles can be matched with fluorocarbon resin to form a super-hydrophobic coating, and the coating has fingerprint prevention and stain resistance functions; in addition, the potassium titanate whisker and the silicon dioxide both have better rigidity and strength, so that the wear resistance of the anti-fingerprint coating can be improved, the anti-fingerprint coating is prevented from falling off, and the function durability of the anti-fingerprint coating is improved.

Drawings

Fig. 1 is a schematic structural diagram of the composite antibacterial substrate with fingerprint prevention function of the present invention.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to specific embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a composite antibacterial base material with an anti-fingerprint function, which comprises a base material 1, a silicon dioxide film layer 2 arranged on the surface of the base material 1, an antibacterial coating 3 arranged on the silicon dioxide film layer 2 and an anti-fingerprint coating 4 arranged on the antibacterial coating 3, wherein the silicon dioxide film layer 2 is arranged on the surface of the base material 1;

the antibacterial coating 3 is prepared from the following raw materials in parts by mass: 40-60 parts of water-based epoxy resin, 5-10 parts of nano antibacterial agent, 20-30 parts of filler, 0.5-1.5 parts of wetting dispersant and 15-20 parts of deionized water;

the anti-fingerprint coating 4 is prepared from the following raw materials in parts by mass: 40-50 parts of fluorocarbon resin, 5-10 parts of hydrophobic modified particles, 1-3 parts of particle dispersant and 45-65 parts of solvent; the hydrophobic modified particles are prepared by modifying potassium titanate whisker-silicon dioxide composite particles through amino silicone oil.

Wherein the substrate 1 is one of a glass substrate, a PC substrate or a metal substrate.

Wherein the silicon dioxide film layer 2 is plated on the substrate by means of vacuum coating.

Wherein, the antibacterial coating 3 and the anti-fingerprint coating 4 are both prepared by a spraying method.

The nano antibacterial agent in the antibacterial coating 3 is at least one of a nano silver ion antibacterial agent, a nano zinc oxide antibacterial agent and a nano titanium oxide antibacterial agent.

The filler in the antibacterial coating 3 is at least one selected from barite powder, barium sulfate powder, talcum powder and mica powder.

The potassium titanate whisker-silica composite particles in the fingerprint-resistant coating 4 are prepared by loading nano silica on potassium titanate whiskers by a sol-gel method.

The solvent in the anti-fingerprint coating 4 is ethyl acetate or ethanol.

Example 1

A composite antibacterial base material with an anti-fingerprint function comprises a glass base material, a silicon dioxide film layer arranged on the surface of the glass base material, an antibacterial coating arranged on the silicon dioxide film layer and an anti-fingerprint coating arranged on the antibacterial coating; wherein the silicon dioxide film layer is plated on the base material in a vacuum coating mode; the antibacterial coating and the anti-fingerprint coating are both prepared by a spraying method.

The antibacterial coating comprises the following raw materials in parts by mass: 40 parts of water-based epoxy resin, 5 parts of nano silver ion antibacterial agent, 25 parts of barite powder, 0.5 part of wetting dispersant and 15 parts of deionized water;

the anti-fingerprint coating comprises the following raw materials in parts by mass: 40 parts of fluorocarbon resin, 5 parts of hydrophobic modified particles, 1 part of particle dispersant and 55 parts of ethanol; the hydrophobic modified particles are prepared by modifying potassium titanate whisker-silicon dioxide composite particles through amino silicone oil. The potassium titanate whisker-silicon dioxide composite particle is prepared by loading nano silicon dioxide on potassium titanate whisker by a sol-gel method. The preparation process of the hydrophobic modified particles comprises the following steps: dropwise adding ethyl acetate aqueous solution of amino silicone oil into ethanol solution containing potassium titanate whisker-silicon dioxide composite particles under an ultrasonic environment, stirring in a water bath kettle at the temperature of 80 ℃ to evaporate a solvent, and thus obtaining the hydrophobic modified particles; the mass ratio of amino silicone oil to potassium titanate whisker-silicon dioxide composite particles used for preparing the hydrophobic modified particles is 1:30, and the volume ratio of ethyl acetate aqueous solution to ethanol solution is 1: 10.

Example 2

A composite antibacterial base material with an anti-fingerprint function comprises a PC base material, a silicon dioxide film layer arranged on the surface of the PC base material, an antibacterial coating arranged on the silicon dioxide film layer and an anti-fingerprint coating arranged on the antibacterial coating; wherein the silicon dioxide film layer is plated on the base material in a vacuum coating mode; the antibacterial coating and the anti-fingerprint coating are both prepared by a spraying method.

The antibacterial coating comprises the following raw materials in parts by mass: 50 parts of water-based epoxy resin, 8 parts of nano silver ion antibacterial agent, 30 parts of barium sulfate powder, 1.5 parts of wetting dispersant and 15 parts of deionized water;

the anti-fingerprint coating comprises the following raw materials in parts by mass: 45 parts of fluorocarbon resin, 8 parts of hydrophobic modified particles, 2 parts of particle dispersant and 45 parts of ethanol; the specific preparation method of the hydrophobically modified particles was the same as in example 1.

Example 3

A composite antibacterial base material with an anti-fingerprint function comprises a PC base material, a silicon dioxide film layer arranged on the surface of the PC base material, an antibacterial coating arranged on the silicon dioxide film layer and an anti-fingerprint coating arranged on the antibacterial coating; wherein the silicon dioxide film layer is plated on the base material in a vacuum coating mode; the antibacterial coating and the anti-fingerprint coating are both prepared by a spraying method.

The antibacterial coating comprises the following raw materials in parts by mass: 60 parts of water-based epoxy resin, 10 parts of nano silver ion antibacterial agent, 20 parts of barite powder, 1.5 parts of wetting dispersant and 20 parts of deionized water;

the anti-fingerprint coating comprises the following raw materials in parts by mass: 50 parts of fluorocarbon resin, 10 parts of hydrophobic modified particles, 3 parts of particle dispersant and 65 parts of ethanol; the specific preparation method of the hydrophobically modified particles was the same as in example 1.

After the composite antibacterial substrate of the embodiment 1-3 is applied to an electronic product, the water drop angles of the surface of the product are all more than or equal to 110 degrees, so that the effects of fingerprint prevention, oil stain prevention and scratch resistance can be achieved; and the antibacterial rate of the product surface to staphylococcus aureus, escherichia coli and klebsiella pneumoniae is more than 99.5%.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents made by the contents of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.