阅读说明：本技术 一种抛光瓷砖及其制备方法和加工设备 (Polished ceramic tile and preparation method and processing equipment thereof ) 是由 刘锦凡 程文静 李丽君 胡艺伦 方伟洪 朱恩堂 罗学新 刘纪文 于 2019-09-29 设计创作，主要内容包括：本发明属于抛光剂领域,具体为一种抛光瓷砖,所述抛光瓷砖表面的微孔和缝隙中填充有抛光膜；所述抛光膜包括交替布置的偶联剂层、填充层；其中填充层与微孔和缝隙直接接触,微孔和缝隙的最外层为偶联剂层；所述填充层由纳米二氧化硅溶液、苯丙乳液形成；纳米二氧化硅溶液、苯丙乳液的重量比例为100:5-15；所述填充层的厚度为0.1-0.3μm；所述偶联剂层的厚度为0.1-0.2μm；其通过特定的偶联剂、填充剂来对抛光砖表面的微孔进行填充,并通过偶联剂层和填充层的交替布置,使偶联剂和填充剂之间连接牢固,能够经受打磨和恶劣的使用环境,保持较好的抗污性能,同时,本发明还公开了该瓷砖的制备方法和加工设备。(The invention belongs to the field of polishing agents, and particularly relates to a polished ceramic tile, wherein polishing films are filled in micropores and gaps on the surface of the polished ceramic tile; the polishing film comprises coupling agent layers and filling layers which are alternately arranged; wherein the filling layer is directly contacted with the micropores and the gaps, and the outermost layers of the micropores and the gaps are coupling agent layers; the filling layer is formed by nano silicon dioxide solution and styrene-acrylic emulsion; the weight ratio of the nano silicon dioxide solution to the styrene-acrylic emulsion is 100: 5-15; the thickness of the filling layer is 0.1-0.3 μm; the thickness of the coupling agent layer is 0.1-0.2 μm; the method fills micropores on the surface of the polished tile by using a specific coupling agent and a specific filling agent, and enables the coupling agent and the filling agent to be firmly connected by virtue of the alternate arrangement of a coupling agent layer and a filling layer, so that the polished tile can withstand polishing and a severe use environment and keep better anti-fouling performance.)

1. A polished tile is characterized in that micropores and gaps on the surface of the polished tile are filled with a polishing film;

the polishing film comprises coupling agent layers and filling layers which are alternately arranged; wherein the filling layer is directly contacted with the micropores and the gaps, and the outermost layers of the micropores and the gaps are coupling agent layers;

the filling layer is formed by nano silicon dioxide solution and styrene-acrylic emulsion; the weight ratio of the nano silicon dioxide solution to the styrene-acrylic emulsion is 100: 5-10;

the coupling agent of the coupling agent layer is represented by the following formula 1:

the thickness of the filling layer is 0.1-0.3 μm;

the thickness of the coupling agent layer is 0.1-0.2 μm.

2. The polished tile of claim 1, wherein the coupling agent layer and the filler layer are 2 layers.

3. The polished tile according to claim 1, wherein the filling layer is formed from a nano-silica solution, a styrene-acrylic emulsion, and an acrylic emulsion in a weight ratio of 100:5 to 10:2 to 5.

4. The polished tile according to claim 1, wherein the nanosilica solution has a solid content of 10-25%; the solid content of the styrene-acrylic emulsion is 40-50%.

5. The polished tile according to claim 3, wherein the nanosilica solution has a solid content of 15-25%; the solid content of the styrene-acrylic emulsion is 45-50%; the solid content of the acrylic emulsion is 55-60%.

6. A process for the preparation of a polished tile according to any one of claims 1 to 5, comprising the steps of:

step 1: polishing the surface of the green brick to be smooth;

step 2: spraying the raw materials used by the filling layer on the surface of the green brick, and repeatedly polishing by using a roller group with bristles; the spraying amount per square meter is 40 g; the polishing time is 0.5 min;

and step 3: spraying a coupling agent on the surface of the green brick treated in the step 2, and repeatedly polishing by using a roller group with bristles; the spraying amount per square meter is 2.0 g; the polishing time is 0.5 min;

and 4, step 4: repeating step 2 and step 3 at least once.

7. An apparatus for carrying out the method of claim 6 comprising, in sequential order, a first grinder with a sanding plate, a second grinder with a plurality of roller sets with bristles, a third grinder with a plurality of roller sets with bristles, a fourth grinder with a plurality of roller sets with bristles, a fifth grinder with a plurality of roller sets with bristles;

a first spray head for spraying raw materials used by the filling layer is arranged between the first grinding machine and the second grinding machine; a second spray head for spraying a coupling agent is arranged between the second grinding machine and the third grinding machine; a third spray head for spraying raw materials used by the filling layer is arranged between the third grinding machine and the fourth grinding machine; and a fourth spray head for spraying a coupling agent is arranged between the fourth grinding machine and the fifth grinding machine.

8. The apparatus of claim 7, wherein the roll groups of the second, third, fourth, and fifth grinders each have a roll number of 10.

Technical Field

The invention relates to the field of polishing solution, in particular to a polished ceramic tile and a preparation method and processing equipment thereof.

Background

The patent ZL200610099354.1 is provided by Hoffoldham spring, an applicant in 2006, and discloses a method for forming a compound antifouling coating based on silicon dioxide on the surface of a porcelain polished tile, wherein firstly, compound silica sol liquid based on silica sol is prepared, then the compound silica sol is applied to the surface of the porcelain polished tile to be processed, and the compound silica sol applied to the surface of the tile is forced to undergo polishing treatment by a grinding head at the same time, and in the processes of polishing, rolling, spreading, rubbing, heating, the compound silica sol generates sol-gel physical and chemical changes consistent with a silicic acid dehydration mechanism while free water is evaporated so as to be hardened, so that a compound antifouling film based on silicon dioxide with firm bonding, transparency and high glossiness is formed on the surface of the porcelain polished tile; and then, the antifouling film is subjected to polishing treatment of a fluorosilicone organic compound solution, sol or emulsion with hydrophobic and oleophobic characteristics, so that the water resistance and oil resistance pollution capacity of the surface are further enhanced.

The compound anti-fouling coating is recorded by the specification and consists of one or more layers of compound silica sol liquid at the lower layer and one or more layers of fluorosilicone organic compound solution at the upper layer.

The compound silica sol liquid consists of silica sol and coating colloid emulsion; an alternative to the fluorosilicone organic compound is fluorotrimethoxysilane.

The compound silica sol liquid is mainly used for resisting pollution.

On page 19 of the specification: the fluorine-silicon compound can be more favorably permeated into the nano-scale pore networks on the surface and in the interior of the dry glue as soon as possible under higher temperature conditions, when a solvent is volatilized, the fluorine-silicon organic compound remained on a pore interface can be firmly fixed and remained in a chemical combination mode, and the surface and the deep layer of the dry glue film can be oleophobic and hydrophobic based on the super-strong double-hydrophobic property of the fluorine-silicon organic compound.

The noted solution plays a leading role in the polishing art, providing guiding significance for subsequent polishing operations within the industry.

By the scheme, the antifouling performance of the composite material reaches 4 grades or even 5 grades (GB/T3810.14-1999);

however, the existing national standard detection method has the following problems: in export products, the detection method provided by the exterior is as follows:

the detection method 1: after polishing operation is carried out on the polished tile, a plurality of samples are randomly extracted, and the polished surface is marked by an oil pen; the surface of the brick is polished by talcum powder, and then the surface of the brick is cleaned by flowing warm water and then wiped by a wet rag to see whether the mark disappears.

The detection method 2 comprises the following steps: the method is substantially the same as the method 1, except that the product is repeatedly heated and cooled, the polished surface is marked by an oil pen, the surface of the polished surface is polished by talcum powder, then the brick surface is cleaned by flowing warm water, and then the surface is wiped by a wet rag to see whether the mark disappears.

Test methods 1 and 2 actually consider the film hardness and temperature resistance of the polishing agent used for filling pores on the surface of the polished tile.

Therefore, the technical problem solved by the application is as follows: how to improve the antifouling performance of the polished tile under the harsh detection means and detection environment.

Disclosure of Invention

The invention aims to provide a polished ceramic tile, which is characterized in that micropores on the surface of the polished ceramic tile are filled with a specific coupling agent and a specific filling agent, and the coupling agent layer and the filling layer are alternately arranged, so that the coupling agent and the filling agent are firmly connected, can withstand grinding and severe use environments, and keep better anti-pollution performance.

Unless otherwise specified, all the% and parts in the present invention are weight percentages and parts, and M represents mol/L.

In order to achieve the purpose, the invention provides the following technical scheme: a polished ceramic tile, the micropore and gap on the surface of the polished ceramic tile are filled with polishing films;

the polishing film comprises coupling agent layers and filling layers which are alternately arranged; wherein the filling layer is directly contacted with the micropores and the gaps, and the outermost layers of the micropores and the gaps are coupling agent layers;

the filling layer is formed by nano silicon dioxide solution and styrene-acrylic emulsion; the weight ratio of the nano silicon dioxide solution to the styrene-acrylic emulsion is 100: 5-10;

the coupling agent of the coupling agent layer is represented by the following formula 1:

the thickness of the filling layer is 0.1-0.3 μm;

the thickness of the coupling agent layer is 0.1-0.2 μm.

In the above polished tile, the coupling agent layer and the filler layer are 2 layers.

In the polished ceramic tile, the filling layer is formed by nano silicon dioxide solution, styrene-acrylic emulsion and acrylic emulsion, and the weight ratio of aerosol silicon dioxide, styrene-acrylic emulsion and acrylic emulsion is 100:5-10: 2-5.

In the polished ceramic tile, the solid content of the nano-silica solution is 10-25%; the solid content of the styrene-acrylic emulsion is 40-50%.

In the polished tile, the solid content of the nano-silica solution is 15-25%; the solid content of the styrene-acrylic emulsion is 45-50%; the solid content of the acrylic emulsion is 55-60%.

Meanwhile, the invention also discloses a preparation method of the polished ceramic tile, which comprises the following steps:

step 1: polishing the surface of the green brick to be smooth;

step 2: spraying the raw materials used by the filling layer on the surface of the green brick, and repeatedly polishing by using a roller group with bristles; the spraying amount per square meter is 40 g; the polishing time is 0.5 min;

and step 3: spraying a coupling agent on the surface of the green brick treated in the step 2, and repeatedly polishing by using a roller group with bristles; the spraying amount per square meter is 2.0 g; the polishing time is 0.5 min;

and 4, step 4: repeating step 2 and step 3 at least once.

Meanwhile, the invention also discloses equipment adopted by the method; the grinding machine comprises a first grinding machine with a grinding plate, a second grinding machine with a plurality of roller groups with bristles, a third grinding machine with a plurality of roller groups with bristles, a fourth grinding machine with a plurality of roller groups with bristles and a fifth grinding machine with a plurality of roller groups with bristles, which are sequentially arranged;

a first spray head for spraying raw materials used by the filling layer is arranged between the first grinding machine and the second grinding machine; a second spray head for spraying a coupling agent is arranged between the second grinding machine and the third grinding machine; a third spray head for spraying raw materials used by the filling layer is arranged between the third grinding machine and the fourth grinding machine; and a fourth spray head for spraying a coupling agent is arranged between the fourth grinding machine and the fifth grinding machine.

In the above apparatus, the number of rollers of the roller group of each of the second dresser, the third dresser, the fourth dresser and the fifth dresser is 10.

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

according to the invention, the micropores on the surface of the polished tile are filled by the specific coupling agent and the specific filler, and the coupling agent layer and the filler layer are alternately arranged, so that the coupling agent and the filler are firmly connected, can withstand grinding and severe use environments, and keep better anti-fouling performance.

Drawings

FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.

Before the process of the present invention is illustrated, the equipment used in the present invention will be described in detail.

The method comprises the following specific steps:

referring to fig. 1, a sanding apparatus includes a first sander 1 with a sanding plate, a second sander 2 with a plurality of roller sets with bristles, a third sander 3 with a plurality of roller sets with bristles, a fourth sander 4 with a plurality of roller sets with bristles, a fifth sander 5 with a plurality of roller sets with bristles, which are arranged in this order; the tiles are moved between the first, second, third, fourth and fifth grinders 1, 2, 3, 4, 5 and are conveyed by the conveyor belt.

A first spray head 6 for spraying raw materials used for a filling layer is arranged between the first grinding machine 1 and the second grinding machine 2; a second spray head 7 for spraying a coupling agent is arranged between the second polisher 2 and the third polisher 3; a third spray head 8 for spraying raw materials used for a filling layer is arranged between the third grinding machine 3 and the fourth grinding machine 4; a fourth spray head 9 for spraying a coupling agent is arranged between the fourth polisher 4 and the fifth polisher 5, and the number of the rollers of the roller groups of the second polisher 2, the third polisher 3, the fourth polisher 4 and the fifth polisher 5 is 10.

The first grinder 1 and a utility model patent zl201811431759.x applied by boshi ceramics limited, york city, applicant in 2018 have themes as follows: a ceramic tile polishing device has the same structure, generally does not need to polish for too long, and has a conveying speed of a conveying belt of 0.5 m/s; the length of the sanding plate in the direction of the conveyor belt is about 1.5 meters. The sanding time at any position is about 2-4 s.

The main innovation of the device is that the specifications of the second grinding machine 2 to the fifth grinding machine 5 are consistent, the second grinding machine 2 to the fifth grinding machine 5 are all composed of 10 rolling rollers with bristles, the 10 rolling rollers of the same grinding machine are connected through a belt, and the belt is electrically driven through the same motor, so that the rolling rollers have the self-rotation capacity.

The first to fourth showerheads 6 to 9 alternately spray the filling layer and the coupling agent layer.

The apparatus of the present invention was applied to examples 1,3 to 5 and comparative examples 1 to 2.

In comparative example 3 and example 2, it was necessary to install a fifth head, a sixth head, and a seventh grinder after the fifth grinder 5. The sixth sander, the seventh sander, and the second sander 2 are identical in structure.