阅读说明：本技术 一种喷墨打印用抗菌数码釉料、制备方法及功能陶瓷 (Antibacterial digital glaze for ink-jet printing, preparation method and functional ceramic ) 是由 *** 吴飞翔 廖丽肖 裴艳 陈美娟 于 2020-07-23 设计创作，主要内容包括：本发明公开一种喷墨打印用抗菌数码釉料、制备方法及功能陶瓷,所述喷墨打印用抗菌数码釉料按重量组份主要包括以下原料：釉料基料15-25份,功能树脂2-6份,纳米磷酸银0.2-0.8份,悬浮剂0.05-0.12份,醋酸乙酯20-40份；所述釉料基料主要由石英、锆英石、碳酸钡、锂辉石、钾长石、钠长石、石灰石、氧化锌、以及膨润土组成；所述功能树脂为PMMA以及丙烯酸的混合,比例为1:0.3-0.8。本发明采用纳米磷酸银并结合结合特定的釉料基料和功能树脂,不仅可以保证银离子的稳定性,而且能够强化抗菌效果,使得喷墨打印用釉料能耐1150℃以上的高温烧制,且不管是在烧制前还是烧制后,釉料都具有优异的抗菌性能；特别地,在经过高温烧制后,陶瓷砖的抗菌性能还能进一步提升。(The invention discloses an antibacterial digital glaze for ink-jet printing, a preparation method and functional ceramics, wherein the antibacterial digital glaze for ink-jet printing mainly comprises the following raw materials in parts by weight: 15-25 parts of glaze base material, 2-6 parts of functional resin, 0.2-0.8 part of nano silver phosphate, 0.05-0.12 part of suspending agent and 20-40 parts of ethyl acetate; the glaze base material mainly comprises quartz, zircon, barium carbonate, spodumene, potash feldspar, albite, limestone, zinc oxide and bentonite; the functional resin is a mixture of PMMA and acrylic acid, and the ratio is 1: 0.3-0.8. According to the invention, the nano silver phosphate is adopted and combined with the specific glaze base material and the functional resin, so that the stability of silver ions can be ensured, the antibacterial effect can be enhanced, the glaze for ink-jet printing can resist high-temperature firing above 1150 ℃, and the glaze has excellent antibacterial performance both before firing and after firing; particularly, after being fired at high temperature, the antibacterial performance of the ceramic tile can be further improved.)

1. An antibacterial digital glaze for ink-jet printing is characterized by mainly comprising the following raw materials in parts by weight: 15-25 parts of glaze base material, 2-6 parts of functional resin, 0.2-0.8 part of nano silver phosphate, 0.05-0.12 part of suspending agent and 20-40 parts of ethyl acetate; the glaze base material mainly comprises quartz, zircon, barium carbonate, spodumene, potash feldspar, albite, limestone, zinc oxide and bentonite; the functional resin is a mixture of PMMA and acrylic acid, and the ratio is 1: 0.3-0.8.

2. The antibacterial digital glaze for ink-jet printing according to claim 1 is characterized by mainly comprising the following raw materials in parts by weight: 18-24 parts of glaze base material, 3-5 parts of functional resin, 0.3-0.7 part of nano silver phosphate, 0.07-0.11 part of suspending agent and 25-35 parts of ethyl acetate.

3. The antibacterial digital glaze for ink-jet printing according to any one of claims 1 to 2, further comprising a dispersant, wherein the dispersant component is 2 to 5 parts.

4. The antibacterial digital glaze for ink-jet printing according to claim 3, wherein the dispersant is BYK163 dispersant or EFKA4400 dispersant.

5. The antibacterial digital glaze for ink-jet printing according to any one of claims 1 to 2, further comprising an antifoaming agent, wherein the antifoaming agent is comprised in an amount of 0.2 to 0.5 parts.

6. The antibacterial digital glaze for ink-jet printing according to claim 5, wherein the defoaming agent is mineral oil or organic silicon.

7. The antibacterial digital glaze for ink-jet printing according to any one of claims 1 to 2, wherein the suspending agent is castor oil derivative or modified hydrogenated castor oil.

8. A method for preparing an antibacterial digital glaze for ink-jet printing, which is used for preparing the antibacterial digital glaze for ink-jet printing according to any one of claims 1-2, and comprises the following steps:

s1, adding a glaze base material and functional resin into half of ethyl acetate, and dispersing for 5-15min under the action of a dispersion machine to uniformly disperse the glaze base material and the functional resin in the ethyl acetate to obtain a mixture a;

s2, adding the mixture a into a grinding machine for grinding until the particle size is 50-150nm, and obtaining slurry b;

s3, adding the nano silver phosphate, the suspending agent and the other half of ethyl acetate into the slurry b, stirring for 20-30min at a stirring speed of 200r/min for 500-mesh filtration to obtain the antibacterial digital glaze.

9. The method according to claim 8, wherein a dispersant and an antifoaming agent are further added to the slurry b in the step S3.

10. A functional ceramic is characterized by comprising the following preparation steps:

1) preparing a green brick;

2) spraying base glaze on the surface of the green brick;

3) spraying the antibacterial digital glaze for ink-jet printing as claimed in any one of claims 1 to 2 on the surface of the ground glaze, wherein the thickness of the antibacterial digital glaze is 0.2 to 0.3 mm;

sintering in a kiln at 1150-1300 deg.c for 50-80 min to obtain the functional ceramic.

Technical Field

The invention relates to the technical field of ceramic glaze, in particular to an antibacterial digital glaze for ink-jet printing, a preparation method and functional ceramic.

Background

The existing ceramic glaze generally takes quartz, feldspar and clay as raw materials, is ground and mixed with water, then is coated on the surface of a blank, is roasted at a certain temperature to be molten, and forms a vitreous thin layer on the surface of the ceramic when the temperature is reduced. It can increase the mechanical strength, thermal stability, dielectric strength and prevent the erosion of liquid and gas. The glaze also has the functions of improving the appearance of the porcelain, facilitating cleaning, preventing from being stained by dust, and the like.

After the existing ceramic glaze is printed on a green brick in an ink-jet mode, the glaze is exposed in the air; after the glaze is sprayed, a large amount of bacteria, germs and toxic mold can be bred after the glaze is directly exposed in the air; after a large number of bacterial colonies are propagated, the obtained ceramic has large color difference and has mixed colors after being fired; and the existing fired glaze is also easy to breed bacterial colonies, and has great influence on the quality of life, such as: floor tiles and a dining bowl which are contacted with people.

In order to avoid the breeding of a large amount of bacteria on the surface of the ceramic, practitioners in the industry also add antibacterial agents into the ceramic glaze to achieve the aim of antibacterial of the ceramic. In the prior art, the antibacterial agent generally adopts heavy metal ions such as silver ions and copper ions or organic antibacterial agents such as parabens and the like; however, since the antibacterial agent is not specially protected and strengthened, the antibacterial performance of the antibacterial agent is damaged to a certain extent after firing, and the antibacterial performance of the ceramic is further reduced. In addition, after the antibacterial agent is added into the ceramic glaze, the low-temperature sintering process of below 800 ℃ can be usually carried out, otherwise, the antibacterial ceramic cannot reach the corresponding national standard.

Disclosure of Invention

In view of the problems in the prior art, the present invention aims to provide an antibacterial digital glaze for inkjet printing, which is resistant to high-temperature firing and has excellent antibacterial performance both before and after firing.

The invention also aims to provide a preparation method of the antibacterial digital glaze.

The invention aims to provide a functional ceramic adopting the antibacterial digital glaze.

In order to achieve the purpose, the invention adopts the following technical scheme.

An antibacterial digital glaze for ink-jet printing is characterized by mainly comprising the following raw materials in parts by weight: 15-25 parts of glaze base material, 2-6 parts of functional resin, 0.2-0.8 part of nano silver phosphate, 0.05-0.12 part of suspending agent and 20-40 parts of ethyl acetate; the glaze base material mainly comprises quartz, zircon, barium carbonate, spodumene, potash feldspar, albite, limestone, zinc oxide and bentonite; the functional resin is a mixture of PMMA and acrylic acid, and the ratio is 1: 0.3-0.8.

More preferably, the antibacterial digital glaze for ink-jet printing mainly comprises the following raw materials in parts by weight: 18-24 parts of glaze base material, 3-5 parts of functional resin, 0.3-0.7 part of nano silver phosphate, 0.07-0.11 part of suspending agent and 25-35 parts of ethyl acetate.

More preferably, the antibacterial digital glaze for ink-jet printing further comprises a dispersant, and the dispersant component is 2-5 parts.

More preferably, the dispersant is dispersant BYK163 or dispersant EFKA 4400.

More preferably, the antibacterial digital glaze for ink-jet printing further comprises a defoaming agent, and the defoaming agent is 0.2-0.5 part.

More preferably, the defoamer is mineral oil or silicone.

More preferably, the suspending agent is a castor oil derivative or a modified hydrogenated castor oil.

The preparation method of the antibacterial digital glaze for ink-jet printing is characterized by comprising the following steps: s1, adding a glaze base material and functional resin into half of ethyl acetate, and dispersing for 5-15min under the action of a dispersion machine to uniformly disperse the glaze base material and the functional resin in the ethyl acetate to obtain a mixture a; s2, adding the mixture a into a grinding machine for grinding until the particle size is 50-150nm, and obtaining slurry b; s3, adding the nano silver phosphate, the suspending agent and the other half of ethyl acetate into the slurry b, stirring for 20-30min at a stirring speed of 200r/min for 500-mesh filtration to obtain the antibacterial digital glaze.

More preferably, a dispersant and a defoamer are also added to the slurry b in the step S3.

A functional ceramic is characterized by comprising the following preparation steps: 1) preparing a green brick; 2) spraying base glaze on the surface of the green brick; 3) spraying the antibacterial digital glaze for ink-jet printing on the surface of the ground glaze, wherein the thickness of the antibacterial digital glaze is 0.2-0.3 mm; sintering in a kiln at 1150-1300 deg.c for 50-80 min to obtain the functional ceramic.

The invention has the beneficial effects.

The nano silver phosphate is added into the glaze system for ink-jet printing, and because the volume and the charge of phosphate ions of the silver phosphate are larger, and the specific glaze base material and the functional resin are combined, the stability of silver ions can be ensured, the antibacterial effect can be enhanced, so that the antibacterial glaze for ink-jet printing can resist the high-temperature firing of more than 1150 ℃, and the glaze has excellent antibacterial performance before or after firing; particularly, after being fired at high temperature, the antibacterial performance of the ceramic tile can be further improved.

Secondly, adopting ethyl acetate as a solvent, and when preparing the antibacterial digital glaze, adding the glaze base material and the functional resin to half of ethyl acetate for dispersing and grinding, and then adding the nano silver phosphate, the suspending agent and the other half of ethyl acetate; therefore, the silver ions can be dispersed very uniformly, and the combination of the silver ions with the glaze base material and the functional resin is facilitated; further strengthening the protection of silver ions.

Detailed Description

The following further describes the embodiments of the present invention, so that the technical solutions and the advantages thereof of the present invention are more clear and definite. The following description of the embodiments is exemplary in nature and is in no way intended to limit the invention.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.