阅读说明：本技术 有机陶瓷烧制粘结剂及其制备方法 (Organic ceramic firing binder and preparation method thereof ) 是由 李满利 路士军 张建 于 2021-07-14 设计创作，主要内容包括：本发明公开了一种有机陶瓷烧制粘结剂,包括粘结剂和添加剂,粘结剂由如下重量份的原料组成：有机硅聚合物45份、N-乙烯基吡咯烷酮25份、可分散乳胶粉15份、有机膨润土2份,添加剂由如下重量份的原料组成：环氧树脂6份、消泡剂0.2份、防冻剂0.4份、杀菌剂0.3份、木质素聚合物0.3份。本发明属于粘结剂技术领域,具体是提供了一种基于木质素本体进行升级改性,粘结力大且结崩性好,降低陶瓷胚体制作及烧结过程中损失率,在高温下具有较高的粘结强度,达到高温下粘结剂的使用要求,且可提高粘结的致密性,工艺简单、经济且安全,成本整体降低的有机陶瓷烧制粘结剂及其制备方法。(The invention discloses an organic ceramic firing binder, which comprises a binder and an additive, wherein the binder is prepared from the following raw materials in parts by weight: 45 parts of organic silicon polymer, 25 parts of N-vinyl pyrrolidone, 15 parts of dispersible latex powder and 2 parts of organic bentonite, wherein the additive is prepared from the following raw materials in parts by weight: 6 parts of epoxy resin, 0.2 part of defoaming agent, 0.4 part of antifreezing agent, 0.3 part of bactericide and 0.3 part of lignin polymer. The invention belongs to the technical field of binders, and particularly provides an organic ceramic fired binder which is upgraded and modified based on a lignin body, has large binding power and good caking property, reduces the loss rate of a ceramic blank in the manufacturing and sintering processes, has higher binding strength at high temperature, meets the use requirement of the binder at high temperature, can improve the compactness of binding, and has simple, economic and safe process and integrally reduced cost, and a preparation method thereof.)

1. The organic ceramic firing binder is characterized in that: the adhesive comprises an adhesive and an additive, wherein the adhesive is prepared from the following raw materials in parts by weight: 30-60 parts of organic silicon polymer, 20-30 parts of N-vinyl pyrrolidone, 10-20 parts of dispersible latex powder and 1-3 parts of organic bentonite, wherein the additive is prepared from the following raw materials in parts by weight: 5-8 parts of epoxy resin, 0.1-0.3 part of defoaming agent, 0.3-0.6 part of antifreezing agent, 0.2-0.5 part of bactericide and 0.2-0.4 part of lignin polymer.

2. The organic ceramic firing binder according to claim 1, characterized in that: the adhesive is prepared from the following raw materials in parts by weight: 45 parts of organic silicon polymer, 25 parts of N-vinyl pyrrolidone, 15 parts of dispersible latex powder and 2 parts of organic bentonite.

3. The organic ceramic firing binder according to claim 1, characterized in that: the additive comprises the following raw materials in parts by weight: 6 parts of epoxy resin, 0.2 part of defoaming agent, 0.4 part of antifreezing agent, 0.3 part of bactericide and 0.3 part of lignin polymer.

4. The organic ceramic firing binder according to claim 1, characterized in that: the organic silicon polymer is polyborosilazane PSNB or polyborosilazane PBSZ.

5. The organic ceramic firing binder according to claim 1, characterized in that: the lignin polymer is calcium lignosulfonate.

6. The preparation method of the organic ceramic firing binder is characterized by comprising the following steps of:

step 1: preparing the raw materials in parts by weight;

step 2, mixing the epoxy resin, the defoaming agent, the antifreezing agent, the bactericide and the lignin polymer, and then carrying out vacuum dehydration to obtain a basic additive;

and 3, mixing and stirring the basic additive obtained in the step 2 with the organic silicon polymer, the N-vinyl pyrrolidone, the dispersible emulsion powder and the organic bentonite to obtain a uniform mixture, and stirring the uniform mixture at normal pressure to obtain the organic binder.

7. The method for producing an organic ceramic firing binder according to claim 6, characterized in that: the vacuum degree of vacuum dehydration in the step 2 is-0.05 MPa to-0.1 MPa, the temperature is 100 ℃ to 150 ℃, and the time is 1-2 h.

Technical Field

The invention belongs to the technical field of binders, and particularly relates to an organic ceramic firing binder and a preparation method thereof.

Background

The pottery is a general name of pottery and porcelain, and all ware made of pottery clay and porcelain clay with different properties by the process flows of material preparation, forming, drying, roasting and the like can be called as the pottery. The ceramic material has excellent high-temperature oxidation resistance, high-temperature mechanical strength, thermal shock resistance, low thermal expansion coefficient, corrosion resistance and other excellent performances, and is increasingly applied to the high-temperature fields of engines, aviation, aerospace and the like. But due to its natural brittleness and low ductility, ceramic materials are difficult to manufacture into large-sized complex structural materials. The organic high-temperature binder has excellent properties such as acid and alkali resistance, good stability, high bonding strength and the like, so the application and development of the organic high-temperature binder in the field of high-temperature binders are attracting attention.

However, as an organic polymer material, cracking and reaction of the organic polymer material in a high-temperature heat treatment process are inevitable, so that the bonding strength is reduced at a high temperature, and the bonding requirement cannot be met.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the organic ceramic firing binder which is upgraded and modified based on the lignin body, has large binding power and good collapse property, reduces the loss rate in the manufacturing and sintering processes of the ceramic blank body, has higher binding strength at high temperature, meets the use requirement of the binder at high temperature, can improve the compactness of the binding, and has simple process, economy, safety and overall reduced cost, and the preparation method thereof.

The technical scheme adopted by the invention is as follows: the invention relates to an organic ceramic firing binder, which comprises a binder and an additive, wherein the binder is prepared from the following raw materials in parts by weight: 30-60 parts of organic silicon polymer, 20-30 parts of N-vinyl pyrrolidone, 10-20 parts of dispersible latex powder and 1-3 parts of organic bentonite, wherein the additive is prepared from the following raw materials in parts by weight: 5-8 parts of epoxy resin, 0.1-0.3 part of defoaming agent, 0.3-0.6 part of antifreezing agent, 0.2-0.5 part of bactericide and 0.2-0.4 part of lignin polymer.

Preferably, the binder consists of the following raw materials in parts by weight: 45 parts of organic silicon polymer, 25 parts of N-vinyl pyrrolidone, 15 parts of dispersible latex powder and 2 parts of organic bentonite.

Preferably, the additive consists of the following raw materials in parts by weight: 6 parts of epoxy resin, 0.2 part of defoaming agent, 0.4 part of antifreezing agent, 0.3 part of bactericide and 0.3 part of lignin polymer.

Preferably, the silicone polymer is polyborosilazane PSNB or polyborosilazane PBSZ.

The invention also discloses a preparation method of the organic ceramic firing binder, which comprises the following steps:

step 1: preparing the raw materials in parts by weight;

step 2, mixing the epoxy resin, the defoaming agent, the antifreezing agent and the bactericide, and then carrying out vacuum dehydration to obtain a basic additive;

and 3, mixing and stirring the basic additive obtained in the step 2 with the organic silicon polymer, the N-vinyl pyrrolidone, the dispersible emulsion powder and the organic bentonite to obtain a uniform mixture, and stirring the uniform mixture at normal pressure to obtain the organic binder.

Further, the vacuum degree of vacuum dehydration in the step 2 is-0.05 MPa to-0.1 MPa, the temperature is 100 ℃ to 150 ℃, and the time is 1 h to 2 h.

The beneficial effects obtained by adopting the scheme are as follows: according to the organic ceramic firing binder and the preparation method thereof, upgrading and modification are carried out based on the lignin body, the binding power is large, the caking property is good, the loss rate in the manufacturing and sintering processes of the ceramic blank is reduced, the high bonding strength is achieved at high temperature, the use requirement of the binder at high temperature is met, the compactness of bonding can be improved, the process is simple, economic and safe, and the cost is reduced integrally.

Detailed Description

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

Embodiment 1, the organic ceramic firing bonding of the present invention comprises a binder and an additive, wherein the binder comprises the following raw materials by weight: 45 parts of organic silicon polymer, 25 parts of N-vinyl pyrrolidone, 15 parts of dispersible latex powder and 2 parts of organic bentonite, wherein the additive is prepared from the following raw materials in parts by weight: 6 parts of epoxy resin, 0.2 part of defoaming agent, 0.4 part of antifreezing agent, 0.3 part of bactericide and 0.3 part of lignin polymer.

Wherein the organic silicon polymer is polyborosilazane PSNB or polyborosilazane PBSZ.

The invention relates to a preparation method of an organic ceramic firing binder, which comprises the following steps:

step 1: preparing the raw materials in parts by weight;

step 2, mixing the epoxy resin, the defoaming agent, the antifreezing agent, the bactericide and the lignin polymer, and then carrying out vacuum dehydration, wherein the vacuum degree is-0.05 MPa to-0.1 MPa, the temperature is 125 ℃, and the time is 1.5h, so as to obtain a basic additive;

and 3, mixing and stirring the basic additive obtained in the step 2 with the organic silicon polymer, the N-vinyl pyrrolidone, the dispersible emulsion powder and the organic bentonite to obtain a uniform mixture, and stirring the uniform mixture at normal pressure to obtain the organic binder.

Embodiment 2, the fired bonding of the organic ceramic comprises a bonding agent and an additive, wherein the bonding agent is composed of the following raw materials in parts by weight: 30 parts of organic silicon polymer, 20 parts of N-vinyl pyrrolidone, 10 parts of dispersible latex powder and 1 part of organic bentonite, wherein the additive is prepared from the following raw materials in parts by weight: 5 parts of epoxy resin, 0.1 part of defoaming agent, 0.3 part of antifreezing agent, 0.2 part of bactericide and 0.2 part of lignin polymer.

Wherein the organic silicon polymer is polyborosilazane PSNB or polyborosilazane PBSZ.

The invention relates to a preparation method of an organic ceramic firing binder, which comprises the following steps:

step 1: preparing the raw materials in parts by weight;

step 2, mixing the epoxy resin, the defoaming agent, the antifreezing agent, the bactericide and the lignin polymer, and then carrying out vacuum dehydration, wherein the vacuum degree is-0.05 MPa to-0.1 MPa, the temperature is 125 ℃, and the time is 1.5h, so as to obtain a basic additive;

and 3, mixing and stirring the basic additive obtained in the step 2 with the organic silicon polymer, the N-vinyl pyrrolidone, the dispersible emulsion powder and the organic bentonite to obtain a uniform mixture, and stirring the uniform mixture at normal pressure to obtain the organic binder.

Embodiment 3, the fired bonding of organic ceramics of the present invention comprises a binder and an additive, wherein the binder is composed of the following raw materials by weight: 60 parts of organic silicon polymer, 30 parts of N-vinyl pyrrolidone, 20 parts of dispersible latex powder and 3 parts of organic bentonite, wherein the additive is prepared from the following raw materials in parts by weight: 8 parts of epoxy resin, 0.3 part of defoaming agent, 0.6 part of antifreezing agent, 0.5 part of bactericide and 0.4 part of lignin polymer.

Wherein the organic silicon polymer is polyborosilazane PSNB or polyborosilazane PBSZ.

The invention relates to a preparation method of an organic ceramic firing binder, which comprises the following steps:

step 1: preparing the raw materials in parts by weight;

step 2, mixing the epoxy resin, the defoaming agent, the antifreezing agent, the bactericide and the lignin polymer, and then carrying out vacuum dehydration, wherein the vacuum degree is-0.05 MPa to-0.1 MPa, the temperature is 125 ℃, and the time is 1.5h, so as to obtain a basic additive;

and 3, mixing and stirring the basic additive obtained in the step 2 with the organic silicon polymer, the N-vinyl pyrrolidone, the dispersible emulsion powder and the organic bentonite to obtain a uniform mixture, and stirring the uniform mixture at normal pressure to obtain the organic binder.

The organic binder obtained in the embodiment 1, the embodiment 2 and the embodiment 3 is coated on the bonding surface of the ceramic to be bonded, the ceramic to be bonded is fully paved, the bonded ceramic is placed in a vacuum environment, vacuum pumping is carried out for 30-50 min, then heat treatment is carried out at 1200-1600 ℃, and the bonding strength can reach 12-22 Mpa.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

The invention and its embodiments have been described above, without limitation, and the actual solution is not limited thereto.

In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.