阅读说明：本技术 一种高硬度抗菌地坪硬化剂的制备及使用方法 (preparation and use method of high-hardness antibacterial floor hardening agent ) 是由 杨辉 吴春春 于 2019-08-28 设计创作，主要内容包括：本发明涉及地坪技术领域,旨在提供一种高硬度抗菌地坪硬化剂的制备及使用方法。其中制备方法是：在0～10℃温度和搅拌条件下,向乙醇中加入正硅酸甲酯,持续搅拌；分20次加入盐酸水溶液,每次间隔20min,添加完成后持续搅拌；搅拌下加入氧化锌溶胶；继续搅拌,并在20℃下陈化2天；将陈化后的复合溶胶和异丙醇加入纳米地坪硬化剂中,搅拌,然后向混合物中加入硬化促进剂,搅拌,最终得到高硬度抗菌地坪硬化剂。本发明采用纳米氧化锌溶胶作为无机抗菌材料加入地坪硬化剂中,氧化锌作为抗菌材料较银离子具有优良的稳定性,不会在地坪硬化剂中出现活性消失和渗出的现象,地坪的抗菌性能得到保证。(The invention relates to the technical field of terraces, and aims to provide a preparation method and a use method of a high-hardness antibacterial terrace hardening agent. The preparation method comprises the following steps: adding methyl orthosilicate into ethanol at the temperature of 0-10 ℃ under the stirring condition, and continuously stirring; adding hydrochloric acid water solution 20 times at intervals of 20min, and stirring continuously after adding; adding zinc oxide sol while stirring; continuing stirring, and aging at 20 deg.C for 2 days; and adding the aged composite sol and isopropanol into the nano floor hardening agent, stirring, adding a hardening accelerator into the mixture, and stirring to finally obtain the high-hardness antibacterial floor hardening agent. According to the invention, the nano zinc oxide sol is used as an inorganic antibacterial material and added into the floor hardener, and the zinc oxide as an antibacterial material has excellent stability compared with silver ions, so that the phenomena of activity disappearance and seepage in the floor hardener are avoided, and the antibacterial performance of the floor is ensured.)

1. A preparation method of a high-hardness antibacterial floor hardening agent is characterized by comprising the following steps:

(1) Adding 40-50 parts by mass of methyl orthosilicate into 40 parts by mass of ethanol at the temperature of 0-10 ℃ under the stirring condition, and continuously stirring for 10 min; adding 5-10 parts by mass of hydrochloric acid aqueous solution with the molar concentration of 2M for 20 times, wherein the interval is 20min each time, and continuously stirring for 10h after the addition is finished;

(2) adding 20-40 parts by mass of zinc oxide sol into the mixture obtained in the step (1) under the condition of stirring; stirring for 30min, and aging at 20 deg.C for 2 days;

(3) Adding the aged composite sol and 10 parts by mass of isopropanol into 70-50 parts by mass of nano floor hardener, stirring for 30min, adding a hardening accelerator accounting for 3-5 per mill of the mass ratio of the mixture into the mixture, and stirring for 30min to finally obtain the high-hardness antibacterial floor hardener.

2. The method according to claim 1, wherein the stirring rate in the step (1) is 100 r/min.

3. The method according to claim 1, wherein the stirring rate in the step (2) is 100 to 200 r/min.

4. the method according to claim 1, wherein the zinc oxide sol has a solid content of 30%, the particle size of sol particles is 10-20 nm, and the solvent used in the sol is ethanol.

5. The method as claimed in claim 1, wherein the nano floor hardener is a solvent-based inorganic nano hardener based on a silicon alkoxide hydrolysis pre-polymerization, the solid content is above 60%, and the pH value is between 6 and 8.

6. The method according to claim 1, wherein the hardening accelerator is a tin-containing crosslinking agent.

7. The method of claim 1, wherein the hardening accelerator is dibutyltin dilaurate having a purity of 95%.

8. the use method of the high-hardness antibacterial floor hardening agent prepared by the method of claim 1 is characterized by comprising the following steps:

(1) Polishing a self-leveling cement floor with the concrete strength grade of C20 or C30 by using a 200-mesh polishing sheet, pouring a high-hardness antibacterial floor hardening agent on the surface of the floor according to the using amount of 1 kilogram per square meter, and uniformly coating the high-hardness antibacterial floor hardening agent;

(2) Covering the terrace with a plastic film, standing for 2 hours, and then uncovering the plastic film; and naturally drying for 8 hours, and polishing the floor by using a polishing sheet of 200-300 meshes.

Technical Field

The invention relates to the technical field of terraces, in particular to a preparation method and a use method of a high-hardness antibacterial terrace hardening agent.

Background

With the development of economy and the improvement of the living standard of people, the public places have more and more requirements on high-quality large-scale terraces, and various functional terraces are produced at the same time, especially in places with higher requirements on environmental sanitation and safety, such as medical institutions like sterile workshops and sterile rooms. At present, the most kinds of floor coatings are common epoxy floor coatings, polyurethane floor coatings and the like, and the antibacterial effect is achieved in the floor coatings by adding silver ion type antibacterial agents and quaternary ammonium salt antibacterial agents. Such as chinese invention patent CN201810833643.2 and chinese invention patent CN 201710204776.9. However, the two antibacterial agents have poor use effect in the permeation type floor hardening agent, and the quaternary ammonium salt antibacterial agent can be dissolved out in the floor use process because the active silver ion antibacterial agent is easy to lose efficacy in a strong acid or strong alkali solution.

Disclosure of Invention

the invention aims to solve the technical problem of overcoming the defects in the prior art and provides a preparation and use method of a high-hardness antibacterial floor hardening agent.

The preparation method of the high-hardness antibacterial floor hardening agent comprises the following steps:

(1) adding 40-50 parts by mass of methyl orthosilicate into 40 parts by mass of ethanol at the temperature of 0-10 ℃ under the stirring condition, and continuously stirring for 10 min; adding 5-10 parts by mass of hydrochloric acid aqueous solution with the molar concentration of 2M for 20 times, wherein the interval is 20min each time, and continuously stirring for 10h after the addition is finished;

(2) Adding 20-40 parts by mass of zinc oxide sol into the mixture obtained in the step (1) under the condition of stirring; stirring for 30min, and aging at 20 deg.C for 2 days;

(3) Adding the aged composite sol and 10 parts by mass of isopropanol into 70-50 parts by mass of nano floor hardener, stirring for 30min, adding a hardening accelerator accounting for 3-5 per mill of the mass ratio of the mixture into the mixture, and stirring for 30min to finally obtain the high-hardness antibacterial floor hardener.

in the present invention, the stirring rate in the step (1) is 100 r/min.

in the invention, the stirring speed in the step (2) is 100-200 r/min.

In the invention, the solid content of the zinc oxide sol is 30%, the particle size of sol particles is 10-20 nm, and the solvent used by the sol is ethanol.

In the invention, the nano floor hardener is a solvent-based inorganic nano hardener based on silicon alkoxide hydrolysis prepolymerization, the solid content is more than 60%, and the pH value is 6-8.

In the present invention, the hardening accelerator is a crosslinking agent containing tin.

In the present invention, the hardening accelerator is dibutyltin dilaurate, and the purity thereof is 95%.

The invention further provides a use method of the high-hardness antibacterial floor hardening agent, which specifically comprises the following steps:

(1) Polishing a self-leveling cement floor with the concrete strength grade of C20 or C30 by using a 200-mesh polishing sheet, pouring a high-hardness antibacterial floor hardening agent on the surface of the floor according to the using amount of 1 kilogram per square meter, and uniformly coating the high-hardness antibacterial floor hardening agent;

(2) Covering the terrace with a plastic film, standing for 2 hours, and then uncovering the plastic film; and naturally drying for 8 hours, and polishing the floor by using a polishing sheet of 200-300 meshes.

Description of the inventive principles:

The nano floor hardening agent based on silicon alkoxide hydrolysis prepolymerization has the advantages of high hardness, chemical pollution resistance, good durability and the like, can be applied to floor surfaces of various types such as concrete, cement and the like, and forms a hardened layer on the surface of the concrete or the cement in a penetration mode, thereby achieving the hardening and dust removal effects of the cement. However, the hardener solution has poor compatibility with ionic antibacterial agents, and the phenomenon of seepage easily occurs in the use process of the floor regardless of silver ions or quaternary ammonium salt antibacterial agents, so that the performance of the floor is affected.

The nano zinc oxide introduced by the invention is an antibacterial inorganic oxide with stable property, can be stably suspended in the floor hardening agent permeable layer, can effectively prevent the phenomenon of seepage of the antibacterial agent by adding the nano zinc oxide, and simultaneously achieves the antibacterial effect of the floor. By adding the nano zinc oxide antibacterial material, inorganic components of the nano zinc oxide antibacterial material penetrate into a pore structure of a cement base body to form a whole with the cement base body, so that an interface between different layers is eliminated, the problem that the terrace is easy to peel off due to weak binding force between layers is solved, and the skeleton structure of the cement base body forms powerful support for the wear resistance and strength of the terrace, so that the terrace with the structure has good durability and strength, and meanwhile, the terrace has good bactericidal performance. The hardening accelerator is added to make the hardening agent to be cured more quickly and to be integrated with the concrete.

Compared with the prior art, the invention has the technical effects that:

According to the invention, the nano zinc oxide sol is used as an inorganic antibacterial material and added into the floor hardener, and the zinc oxide as an antibacterial material has excellent stability compared with silver ions, so that the phenomena of activity disappearance and seepage in the floor hardener are avoided, and the antibacterial performance of the floor is ensured.

Detailed Description

In the invention, the nano zinc oxide sol, the nano floor hardening agent and the hardening accelerator are all commercially available products. For example, the nano zinc oxide sol in the following examples is selected from XT-0806-54-1 product of Shanghai lane field nano materials Co., Ltd; the solid content of the zinc oxide sol product is 30%, the particle size of sol particles is 10-20 nm, and the solvent used by the sol is ethanol. The nano floor hardener is a nano hardener X760 of Hangzhou Nagu new material company Limited; the product is a solvent-based inorganic nano hardener based on silicon alkoxide hydrolysis prepolymerization, the solid content is more than 60%, and the pH value is 6-8. The hardening accelerator is selected from the group consisting of alatin reagent, cat # D100274; the active ingredient is dibutyltin dilaurate, and the purity is 95%.

The invention is further described below by way of examples.