An acid-resistant enamel and a method for preparing the same

Abstract

The present application relates to the technical field of enamel glaze, and particularly relates to acid-resistant enamel glaze and a preparation method thereof. The preparation raw material of the acid-resistant enamel glaze provided by the present application comprises silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, zirconium oxide and suspending agent. The acid-resistant enamel glaze provided by the present application still has efficient acid-resistant stability, wear resistance and impact resistance after being placed for a period of time, the obtained enamel glaze has the effect of low cost, and has good application prospect.

Description

TECHNICAL FIELD

[0001] The present application relates to the enamel glaze technical field, specifically relates to a kind of acid-resistant type enamel glaze and preparation method thereof. BACKGROUND

[0002] Enamel glaze is used to be coated on the metal product on glassy substance;Enamel glaze is coated on the metal product, and after firing, it can be firmly combined with metal product, and has protective effect and decorative effect to metal product. According to the material of metal product, it is divided into steel plate enamel glaze, cast iron enamel glaze, aluminum enamel glaze, copper enamel glaze and gold, silver enamel glaze etc.;Among them, steel plate enamel glaze and cast iron enamel glaze are most used.

[0003] A layer of enamel layer is fired on the surface of metal product, which can effectively improve its service life, and can solve the contradiction that metal product cannot have excellent mechanical properties and acid resistance, heat resistance. The main problem of the enamel glaze produced at present is that the acid resistance chemical stability is relatively poor, and when the acid resistance chemical stability is increased, the wear resistance and impact resistance are poor, and the effect of glaze after preparation is not ideal, which affects the application of enamel product. SUMMARY

[0004] The present application is based on the above technical problem, and thus provides an acid-resistant type enamel glaze and preparation method thereof, which solves the technical problems of poor acid resistance of enamel glaze, no wear resistance and impact resistance, and poor effect after storage.

[0005] The acid-resistant type enamel glaze provided by the present application still has high acid resistance stability, wear resistance and impact resistance after storage for a period of time, and the obtained enamel glaze has the effect of low cost, and has good application prospect.

[0006] In one aspect, the present application provides an acid-resistant type enamel glaze, and the raw materials include silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, zirconium oxide and suspending agent.

[0007] Further, the present application provides an acid-resistant type enamel glaze, and the raw materials include, by mass fraction: 45-60 parts of silicon dioxide, 30-40 parts of borax, 2-5 parts of sodium carbonate, 1-4 parts of aluminum oxide, 0.2-2 parts of titanium dioxide, 0.2-1.5 parts of potassium carbonate, 0.2-1.3 parts of nickel oxide, 0.2-1.5 parts of cobalt oxide, 0.2-1.8 parts of lanthanum carbonate and 0.8-2.5 parts of suspending agent.

[0008] Further, the mass fraction of the silica in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 45 parts, 46 parts, 47 parts, 48 parts, 49 parts, 50 parts, 51 parts, 52 parts, 53 parts, 54 parts, 55 parts, 56 parts, 57 parts, 58 parts, 59 parts, 60 parts or a range between any two of the above values.

[0009] Further, the mass fraction of the borax in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts, 40 parts or a range between any two of the above values.

[0010] Further, the mass fraction of the sodium carbonate in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 2 parts, 2.2 parts, 2.5 parts, 2.8 parts, 3 parts, 3.2 parts, 3.5 parts, 3.8 parts, 4 parts, 4.2 parts, 4.5 parts, 4.8 parts, 5 parts or a range between any two of the above values.

[0011] Further, the mass fraction of the alumina in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 1 part, 1.2 parts, 1.5 parts, 1.8 parts, 2 parts, 2.2 parts, 2.5 parts, 2.8 parts, 3 parts, 3.2 parts, 3.5 parts, 3.8 parts, 4 parts or a range between any two of the above values.

[0012] Further, the mass fraction of the titanium dioxide in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 0.2 parts, 0.4 parts, 0.5 parts, 0.8 parts, 1 part, 1.2 parts, 1.5 parts, 1.8 parts, 2 parts or a range between any two of the above values.

[0013] Further, the mass fraction of the potassium carbonate in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 0.2 parts, 0.4 parts, 0.5 parts, 0.8 parts, 1 part, 1.2 parts, 1.5 parts or a range between any two of the above values.

[0014] Further, the mass fraction of the nickel oxide in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 0.2 parts, 0.4 parts, 0.5 parts, 0.8 parts, 1 part, 1.2 parts, 1.3 parts or a range between any two of the above values.

[0015] Further, the mass fraction of the cobalt oxide in the preparation raw material of the acid-resistant enamel enamel of the present application can be selected as 0.2 parts, 0.4 parts, 0.5 parts, 0.8 parts, 1 part, 1.2 parts, 1.3 parts, 1.5 parts or a range between any two of the above values.

[0016] Further, the mass fraction of lanthanum carbonate in the preparation of acid-resistant enamel enamel material is 0.2 parts, 0.4 parts, 0.5 parts, 0.8 parts, 1 part, 1.2 parts, 1.3 parts, 1.5 parts, 1.8 parts, or a range between any two of the above values.

[0017] Further, the mass fraction of the suspending agent in the preparation of acid-resistant enamel enamel material is 0.8 parts, 1 part, 1.2 parts, 1.3 parts, 1.5 parts, 1.8 parts, 2 parts, 2.2 parts, 2.4 parts, 2.5 parts, or a range between any two of the above values.

[0018] Further, based on enhancing acid-resistant stability, the mass ratio of nickel oxide and lanthanum carbonate in the preparation of acid-resistant enamel enamel material is 1:(0.3-0.8), and further 1:(0.35-0.8), 1:(0.4-0.8), 1:(0.45-0.75), 1:(0.5-0.7).

[0019] Further, the kind of the suspending agent is creatively selected, thereby significantly improving the acid-resistant effect, wear resistance and impact resistance of the enamel, and the above effects are still outstanding after the enamel is placed for a period of time. The combination of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate shows better effects.

[0020] Further, in order to better improve the acid-resistant, impact-resistant and wear-resistant effects of the enamel, the mass ratio of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate is 1:(0.8-1.5), 1:(0.85-1.5), 1:(0.85-1.45), 1:(0.85-1.35), 1:(0.9-1.3) or 1:(0.9-1.2).

[0021] Further, the application provides an acid-resistant enamel enamel material, which contains, in mass fraction, 45-60 parts of silicon dioxide, 30-40 parts of borax, 2-5 parts of sodium carbonate, 1-4 parts of aluminum oxide, 0.2-2 parts of titanium dioxide, 0.2-1.5 parts of potassium carbonate, 0.2-1.3 parts of nickel oxide, 0.2-1.5 parts of cobalt oxide, 0.2-1.8 parts of lanthanum carbonate and 0.8-2.5 parts of a suspending agent; the mass ratio of the nickel oxide and the lanthanum carbonate is 1:(0.3-0.8), and the suspending agent is a combination of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate.

[0022] On the other hand, the application provides a preparation method of an acid-resistant enamel enamel material, which comprises the following steps:

[0023] (1), grind, sieve separately silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent, for standby;

[0024] (2), according to the amount of selection step (1) after sieving silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent is mixed, get mixture 1;

[0025] (3), mixture 1 and water are mixed, then ball milling, sieve, select the liquid through the screen, as the acid resistant type enamel frit.

[0026] Further, step (1) silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent sieving obtained particle size is less than 1000 microns, less than 500 microns, less than 200 microns, less than 100 microns or less than 80 microns, less than 50 microns or less than 30 microns.

[0027] Further, the amount of water in step (3) is 0.5-10 times, 0.7-9 times, 0.8-8 times, 0.9-7 times or 1-5 times of mixture 1.

[0028] Further, the mesh number of sieving in step (3) is greater than 300 mesh, greater than 500 mesh, greater than 700 mesh, greater than 900 mesh, greater than 1000 mesh or greater than 1500 mesh.

[0029] Further, the application provides a preparation method of acid resistant type enamel frit, comprising the following steps:

[0030] (1), grind, sieve separately silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent, all select the particle size of raw material particles less than 1000 microns for standby;

[0031] (2), according to the amount of selection step (1) after sieving silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent particles are mixed, get mixture 1;

[0032] (3), mixture 1 and water with the amount of 0.5-10 times of mixture 1 are mixed, then ball milling, sieve greater than 300 mesh, select the liquid through the screen, as the acid resistant type enamel frit. Beneficial effects

[0033] The acid-resistant enamel glaze provided by this invention retains its high acid resistance stability, wear resistance, and impact resistance even after being left for a period of time. The resulting enamel glaze is cost-effective and has good application prospects.

[0034] The glaze provided by this invention has good acid resistance and stability, with a corrosion resistance of 0.406 g / (m³) against 20% boiling hydrochloric acid for 168 hours. 2 *d), the corrosion resistance to 25% boiling hydrochloric acid for 168 hours reached 0.523 g / (m³). 2 *d).

[0035] The glaze of this invention uses lanthanum carbonate and nickel oxide, both of which can impart good acid resistance to the glaze to a certain extent. In the glaze system of this invention, the combination of the two produces a mutually reinforcing effect on increasing acid resistance.

[0036] The glaze of this invention uses a suspending agent composed of acrylic-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate, which can increase the acid resistance, wear resistance and impact resistance of the glaze surface. The combination of the two makes the glaze raw materials more efficiently dispersed and uniformly coated, and makes the coating layer more dense, which can enhance the acid resistance, wear resistance and impact resistance of the glaze surface. In particular, when the glaze is left to stand for a long time, the suspending agent composed of acrylic-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate will make the above effects more prominent.

[0037] In the glaze system of this invention, the combination of acrylic-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate can significantly and synergistically enhance the acid resistance, wear resistance and impact resistance of the glaze surface.

[0038] The suspending agent obtained by combining acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate in a mass ratio of 1:(0.8-1.5) can further enhance the acid resistance, wear resistance and impact resistance of the glaze.

[0039] The glaze provided by this invention has good wear resistance, with an wear resistance test index reaching 0.032 g / cm. 3 The glaze obtained by the glaze of the present invention has good hardness.

[0040] The glaze provided by this invention has good impact resistance, with a mechanical impact resistance W value of 0.357J. The glaze surface obtained by the glaze of this invention has excellent impact resistance.

[0041] The preparation method of the glaze of the present invention is simple and low in cost, and the performance of the glaze remains excellent after being stored for 2 months, which has broad application prospects. Detailed Implementation

[0042] The present application will be described below in conjunction with specific embodiments, and various effects of the present application will be more clearly presented thereby. Those skilled in the art should understand that these specific embodiments are used to illustrate the present application, rather than limit the present application.

[0043] The sources of the preparation raw materials used in the present application are as follows: silicon dioxide: Jinan Dewen Chemical Co., Ltd.; borax: Shandong Lushui Chemical Co., Ltd.; sodium carbonate: Yingcheng Xiangfa Chemical Co., Ltd.; aluminum oxide: Langfang Qianyao Technology Co., Ltd.; titanium dioxide: Hebei Tao Hai Biological Technology Co., Ltd.; potassium carbonate: Jinan Xiyue Chemical Co., Ltd.; nickel oxide: Shandong Guohua Chemical Co., Ltd.; cobalt oxide: Zibo Yubang Industrial Ceramics Co., Ltd.; lanthanum carbonate: Shandong Changyao New Material Co., Ltd.; acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer: Jiangsu Runfeng Synthetic Technology Co., Ltd.; sodium alginate: Guangdong Ousman Biological Technology Co., Ltd.

[0044] I. Preparation of acid-resistant enamel frit

[0045] 1. Acid-resistant enamel frit 1:

[0046] A. Preparation of raw materials: 52 parts of silicon dioxide, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of aluminum oxide, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 1.0 parts of nickel oxide, 0.7 parts of cobalt oxide, 0.6 parts of lanthanum carbonate, and 2 parts of suspending agent; wherein the mass ratio of nickel oxide and lanthanum carbonate is 1:0.6, and the suspending agent is acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate with a mass ratio of 1:1;

[0047] B. Preparation method: (1) grind and sieve the silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, and suspending agent, respectively, and select raw material particles with a particle size of less than 100 microns during sieving for standby;

[0048] (2) mix the sieved silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, and suspending agent particles in step (1) according to the amount selected, to obtain a mixture 1;

[0049] (3) mix the mixture 1 with water with a mass amount of 2 times that of the mixture 1, then ball mill and pass through a 1000 mesh sieve, and select the material liquid passing through the sieve as the acid-resistant enamel frit 1.

[0050] 2. Acid-resistant enamel frit 2:

[0051] A, the preparation of raw materials, mass fraction: 60 parts of silicon dioxide, 40 parts of borax, 3.2 parts of sodium carbonate, 2.2 parts of alumina, 0.7 parts of titanium dioxide, 0.5 parts of potassium carbonate, 1.1 parts of nickel oxide, 0.6 parts of cobalt oxide, 0.5 parts of lanthanum carbonate and 2 parts of suspending agent; wherein the mass ratio of nickel oxide and lanthanum carbonate is 1:0.455, and the suspending agent is acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate with a mass ratio of 1:1.5;

[0052] B, the preparation method: (1), the silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent are respectively ground and sieved, and the particle size of the raw material particles is less than 80 microns during sieving;

[0053] (2), the sieved silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent in step (1) are mixed according to the amount, and mixture 1 is obtained;

[0054] (3), mixture 1 is mixed with water with a mass amount of 2 times that of mixture 1, then ball milled and sieved through a 1000 mesh sieve, and the material liquid passing through the sieve is selected as the acid-resistant enamel glaze 2.

[0055] 3, acid-resistant enamel glaze 3:

[0056] A, the preparation of raw materials, mass fraction: 50 parts of silicon dioxide, 30 parts of borax, 2.8 parts of sodium carbonate, 1.9 parts of alumina, 0.6 parts of titanium dioxide, 0.4 parts of potassium carbonate, 1 parts of nickel oxide, 0.55 parts of cobalt oxide, 0.5 parts of lanthanum carbonate and 1.9 parts of suspending agent; wherein the mass ratio of nickel oxide and lanthanum carbonate is 1:0.5, and the suspending agent is acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate with a mass ratio of 1:0.9;

[0057] B, the preparation method: (1), the silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent are respectively ground and sieved, and the particle size of the raw material particles is less than 80 microns during sieving;

[0058] (2), the sieved silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent in step (1) are mixed according to the amount, and mixture 1 is obtained;

[0059] (3), mixture 1 is mixed with water with a mass amount of 2 times that of mixture 1, then ball milled and sieved through a 1000 mesh sieve, and the material liquid passing through the sieve is selected as the acid-resistant enamel glaze 3.

[0060] 4. Acid-resistant enamel 4:

[0061] A. Preparation of raw materials: 52 parts by mass of silica, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of alumina, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 0.7 parts of cobalt oxide, 1.6 parts of lanthanum carbonate, and 2 parts of a suspending agent; wherein the suspending agent is a copolymer of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid and sodium alginate at a mass ratio of 1:1;

[0062] B. Preparation method: (1) grind and sieve the silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, cobalt oxide, lanthanum carbonate, and suspending agent, respectively, and select raw material particles with a particle size of less than 100 microns during sieving for standby;

[0063] (2) mix the sieved silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, cobalt oxide, lanthanum carbonate, and suspending agent in step (1) according to the specified amount, to obtain a mixture 1;

[0064] (3) mix the mixture 1 with water having a mass amount of 2 times that of the mixture 1, then ball mill and pass through a 1000 mesh sieve, and select the material liquid passing through the sieve as the acid-resistant enamel 4.

[0065] 5. Acid-resistant enamel 5:

[0066] A. Preparation of raw materials: 52 parts by mass of silica, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of alumina, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 1.6 parts of nickel oxide, 0.7 parts of cobalt oxide, and 2 parts of a suspending agent; wherein the suspending agent is a copolymer of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid and sodium alginate at a mass ratio of 1:1;

[0067] B. Preparation method: (1) grind and sieve the silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, and suspending agent, respectively, and select raw material particles with a particle size of less than 100 microns during sieving for standby;

[0068] (2) mix the sieved silica, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, and suspending agent in step (1) according to the specified amount, to obtain a mixture 1;

[0069] (3) mix the mixture 1 with water having a mass amount of 2 times that of the mixture 1, then ball mill and pass through a 1000 mesh sieve, and select the material liquid passing through the sieve as the acid-resistant enamel 5.

[0070] 6. Acid-resistant enamel 6:

[0071] A, the preparation of raw materials, mass parts: 52 parts of silicon dioxide, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of aluminum oxide, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 1.0 parts of nickel oxide, 0.7 parts of cobalt oxide, 0.6 parts of lanthanum carbonate; wherein, the mass ratio of nickel oxide and lanthanum carbonate is 1:0.6;

[0072] B, the preparation method: (1), the silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate are ground, sieved, and the particle size of the raw material particles is less than 100 microns during sieving;

[0073] (2), the sieved silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate in step (1) are mixed according to the amount, and mixture 1 is obtained;

[0074] (3), mixture 1 is mixed with water with a mass amount of 2 times that of mixture 1, then ball milled and sieved through a 1000 mesh sieve, and the material liquid passing through the sieve is selected as the acid-resistant enamel 6.

[0075] 7, acid-resistant enamel 7:

[0076] A, the preparation of raw materials, mass parts: 52 parts of silicon dioxide, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of aluminum oxide, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 1.0 parts of nickel oxide, 0.7 parts of cobalt oxide, 0.6 parts of lanthanum carbonate and 2 parts of suspending agent; wherein, the mass ratio of nickel oxide and lanthanum carbonate is 1:0.6, and the suspending agent is sodium alginate;

[0077] B, the preparation method: (1), the silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent are ground, sieved, and the particle size of the raw material particles is less than 100 microns during sieving;

[0078] (2), the sieved silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent in step (1) are mixed according to the amount, and mixture 1 is obtained;

[0079] (3), mixture 1 is mixed with water with a mass amount of 2 times that of mixture 1, then ball milled and sieved through a 1000 mesh sieve, and the material liquid passing through the sieve is selected as the acid-resistant enamel 7.

[0080] 8, acid-resistant enamel 8:

[0081] A, the preparation of raw materials, mass fraction: 52 parts of silicon dioxide, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of alumina, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 1.0 parts of nickel oxide, 0.7 parts of cobalt oxide, 0.6 parts of lanthanum carbonate and 2 parts of suspending agent; wherein, the mass ratio of nickel oxide and lanthanum carbonate is 1:0.6, and the suspending agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer;

[0082] B, the preparation method: (1), the silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent are respectively ground and sieved, and the particle size of the raw material particles is less than 100 microns during sieving;

[0083] (2), the sieved silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent in step (1) are mixed according to the amount, and mixture 1 is obtained;

[0084] (3), mixture 1 is mixed with water with a mass amount of 2 times that of mixture 1, then ball milled and sieved through a 1000 mesh sieve, and the material liquid passing through the sieve is selected as the acid-resistant enamel 8.

[0085] 9, acid-resistant enamel 9:

[0086] A, the preparation of raw materials, mass fraction: 52 parts of silicon dioxide, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of alumina, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 1.0 parts of nickel oxide, 0.7 parts of cobalt oxide, 0.6 parts of lanthanum carbonate and 2 parts of suspending agent; wherein, the mass ratio of nickel oxide and lanthanum carbonate is 1:0.6, and the suspending agent is acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate with a mass ratio of 1:0.2;

[0087] B, the preparation method: (1), the silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate, suspending agent are respectively ground and sieved, and the particle size of the raw material particles is less than 100 microns during sieving;

[0088] (2), the sieved silicon dioxide, borax, sodium carbonate, alumina, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent in step (1) are mixed according to the amount, and mixture 1 is obtained;

[0089] (3), mixture 1 is mixed with water with a mass amount of 2 times that of mixture 1, then ball milled and sieved through a 1000 mesh sieve, and the material liquid passing through the sieve is selected as the acid-resistant enamel 9.

[0090] 10, acid-resistant enamel 10:

[0091] A, raw materials for preparation, mass parts: 52 parts of silicon dioxide, 35 parts of borax, 2.5 parts of sodium carbonate, 2.8 parts of aluminum oxide, 0.5 parts of titanium dioxide, 0.7 parts of potassium carbonate, 1.0 parts of nickel oxide, 0.7 parts of cobalt oxide, 0.6 parts of lanthanum carbonate and 2 parts of suspending agent; wherein the mass ratio of nickel oxide and lanthanum carbonate is 1:0.6, and the suspending agent is acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate with a mass ratio of 1:2.5;

[0092] B, preparation method: (1) grinding, sieving silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent respectively, and selecting raw material particles with a particle size less than 100 microns during sieving for standby;

[0093] (2) mixing the sieved silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent in step (1) according to the amount selected in step (1) to obtain mixture 1;

[0094] (3) mixing mixture 1 with water with a mass amount of 2 times that of mixture 1, then ball milling, sieving through a 1000 mesh sieve, and selecting the material liquid passing through the sieve as the acid-resistant enamel 10.

[0095] II. Performance test

[0096] After 2 months of standing, the acid-resistant enamel 1-10 was applied to the glaze with a thickness of 0.75 mm, dried at 85℃ for 6 hours, then placed in a kiln and heated to 950℃ at a rate of 10℃ / min, kept for 0.5h, then cooled to 100℃ at a rate of 5℃ / min, and naturally cooled to room temperature; performance test was carried out. The test objects obtained from the enamel 1-10 were named as samples 1-10 in turn.

[0097] 1. Acid resistance test

[0098] The resistance to 20% and 25% boiling hydrochloric acid for 168h was used to characterize the acid resistance. The test method adopted was GB / T 7989-2013. Among them, the resistance to 20% boiling hydrochloric acid for 168h was recorded as T 20 , and the resistance to 25% boiling hydrochloric acid for 168h was recorded as T 25 , and the unit was g / (m 2 *d). The results are shown in Table 1.

[0099] Table 1: Acid resistance test

[0100]

[0101] From the test results recorded in Table 1, it can be seen that the glaze provided by the present application has good acid resistance, and the corrosion resistance effect reaches 0.406 g / (m 2 *d after 168 h of boiling 20% hydrochloric acid, and the corrosion resistance effect reaches 0.523 g / (m 2 *d after 168 h of boiling 25% hydrochloric acid.

[0102] In the glaze of the present application, lanthanum carbonate and nickel oxide are used, both of which can impart good acid resistance to the glaze to some extent. In the glaze system of the present application, the combination of the two produces an effect of mutual promotion of increased acid resistance. This can be seen from the test results of samples 1 and 4-5.

[0103] The suspension agent composed of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate used in the glaze of the present application can increase the acid resistance of the glaze surface. The combination of the two makes the glaze raw materials more efficiently dispersed and uniformly coated, and makes the coating layer more dense, which can enhance the acid resistance of the glaze surface. In particular, when the glaze is left to stand for a long time, the suspension agent composed of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate can more prominently embody the above effects. In the glaze system of the present application, the combination of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate can significantly and synergistically enhance the acid resistance of the glaze surface. This can be seen from the test results of samples 1, 7 and 8. Furthermore, the present inventors found during the research of the present application that the suspension agent obtained by the combination of acrylic acid-2-acrylamide-2-methylpropane sulfonic acid copolymer and sodium alginate in a mass ratio of 1: (0.8-1.5) can further enhance the acid resistance of the glaze surface.

[0104] 2. Abrasion resistance test

[0105] The specific test procedure is as follows: the sample is placed on a grinding machine, and the grinding wheel is used to grind the sample at a load of 40 N and a speed of 100 r / min for 400 turns. Then, the abrasion loss t (g / cm 3 ) of the sample per unit area is measured, and t is used to represent the abrasion resistance. The calculation formula of t is: t = (A1-A2) / B, wherein A1 is the mass of the sample before grinding, in g; A2 is the mass of the sample after grinding, in g; and B is the grinding area of the sample, in cm 2 . The specific results are shown in Table 2.

[0106] Table 2: Abrasion resistance test

[0107]

[0108] From the test results in Table 2, it can be seen that the glaze provided by the present application has good abrasion resistance, and the abrasion resistance test index reaches 0.032 g / cm 3The glaze obtained by the glaze has good hardness.

[0109] The suspension agent of the combination of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate in the glaze can increase the wear resistance of the glaze, the combination of the two can make the raw materials of the glaze more efficient in dispersion, uniform coating and make the coating layer more dense, and can enhance the hardness of the glaze; in particular, when the glaze is placed for a long time, the suspension agent of the combination of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate can more outstandingly embody the above effects. In the glaze system of the application, the combination of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate can significantly and synergistically enhance the wear resistance of the glaze; and when the mass ratio of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate is 1: (0.8-1.5), the suspension agent obtained by the combination can further enhance the wear resistance of the glaze and give the glaze higher hardness.

[0110] 3. Impact resistance performance test

[0111] The sample is measured for mechanical impact resistance performance W by the test method recorded in GB / T 7990-2013, and the unit is J, to represent the impact resistance performance. The results are as shown in Table 3.

[0112] Table 3: Impact resistance performance test

[0113]

[0114] It can be known from the test results in Table 3 that the glaze provided by the application has good impact resistance performance, and the mechanical impact resistance performance W value reaches 0.357 J, and the glaze obtained by the glaze has excellent impact resistance.

[0115] The combination of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate can enhance the impact resistance of the glaze; in particular, when the glaze is placed for a long time, the suspension agent of the combination of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate can more outstandingly embody the above effects. In the glaze system of the application, the combination of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate can significantly and synergistically enhance the impact resistance of the glaze; and when the mass ratio of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate is 1: (0.8-1.5), the suspension agent obtained by the combination can further enhance the impact resistance of the glaze.

[0116] Obviously, many modifications and variations of the present application are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. An acid-resistant enamel composition, characterized by: The raw materials are prepared in mass parts: 45-60 parts of silicon dioxide, 30-40 parts of borax, 2-5 parts of sodium carbonate, 1-4 parts of aluminum oxide, 0.2-2 parts of titanium dioxide, 0.2-1.5 parts of potassium carbonate, 0.2-1.3 parts of nickel oxide, 0.2-1.5 parts of cobalt oxide, 0.2-1.8 parts of lanthanum carbonate and 0.8-2.5 parts of suspending agent; The suspending agent is a combination of acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate; The mass ratio of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate is 1: (0.8-1.5).

2. The acid-resistant vitreous enamel material according to claim 1, characterized in that: The mass ratio of the nickel oxide and lanthanum carbonate is 1: (0.3-0.8).

3. The acid-resistant vitreous enamel material according to claim 1, characterized in that: The mass ratio of the nickel oxide and lanthanum carbonate is 1: (0.5-0.7).

4. The acid-resistant vitreous enamel material according to claim 1, characterized in that: The mass ratio of the acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer and sodium alginate is 1: (0.9-1.2).

5. The method of preparing acid-resistant enamel according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: (1) grinding and sieving silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent respectively for standby use; (2) mixing the sieved silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent in step (1) according to the selected amount to obtain a mixture 1; (3) mixing the mixture 1 with water, then ball milling and sieving to obtain the acid-resistant type porcelain enamel.

6. The method of making an acid-resistant vitreous enamel according to claim 5, wherein: In step (1), the particle size of the sieved silicon dioxide, borax, sodium carbonate, aluminum oxide, titanium dioxide, potassium carbonate, nickel oxide, cobalt oxide, lanthanum carbonate and suspending agent is less than 1000 microns.

7. The method of making an acid-resistant vitreous enamel according to claim 5, wherein: The amount of water added in step (3) is 1-10 times the mass of the mixture 1. The amount of water added in step (3) is 1-10 times the mass of the mixture 1.

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