阅读说明：本技术 一种精密零件的陶瓷材料配方及其制备方法 (Ceramic material formula of precision part and preparation method thereof ) 是由 吕晓霞 于 2020-05-13 设计创作，主要内容包括：本发明公开一种精密零件的陶瓷材料配方,按重量份计,包括以下组分；氮化硼5-8wt％、氮化硅80-90wt％、有机材料10-20wt％,其中有机材料包含有热塑性树脂、增塑剂和偶联剂,热塑性树脂和增塑胶的配方比为5：7,偶联剂的的重量为0.8～1％,助熔剂为页岩,助容剂采用硅灰石、白云石、滑石、石灰石其中一种,可以应用于日用陶瓷、工艺美术陶瓷、建筑陶瓷、卫生陶瓷、园林陶瓷等领域,原料便宜,工艺简单,降低了烧成温度,降低了能耗。降低了生产成本,减少了生产设备的投入,提高了生产效率和企业效益,实用性能优,使用灵活,设计新颖,是一种很好的创新方案,很有市场推广前景。(The invention discloses a ceramic material formula of a precision part, which comprises the following components in parts by weight; 5-8 wt% of boron nitride, 80-90 wt% of silicon nitride and 10-20 wt% of organic material, wherein the organic material comprises thermoplastic resin, plasticizer and coupling agent, and the formula ratio of the thermoplastic resin to the plasticizing plastic is 5: 7, the weight of the coupling agent is 0.8-1%, the fluxing agent is shale, the compatilizer is one of wollastonite, dolomite, talc and limestone, and the ceramic can be applied to the fields of daily ceramics, industrial art ceramics, building ceramics, sanitary ceramics, garden ceramics and the like. The production cost is reduced, the investment of production equipment is reduced, the production efficiency and the enterprise benefit are improved, the practicability is excellent, the use is flexible, the design is novel, the method is a good innovation scheme, and the market promotion prospect is good.)

1. The formula of the ceramic material for the precision parts is characterized in that: comprises the following components in parts by weight; 5-8 wt% of boron nitride, 80-90 wt% of silicon nitride and 10-20 wt% of organic material, wherein the organic material comprises thermoplastic resin, plasticizer and coupling agent, and the formula ratio of the thermoplastic resin to the plasticizing plastic is 5: 7, the weight of the coupling agent is 0.8-1%, the fluxing agent is shale, and the compatilizer is one of wollastonite, dolomite, talc and limestone.

2. A ceramic material formulation for precision parts according to claim 1, characterized in that: furthermore, the thermoplastic resin material is prepared by mixing any two of polyethylene, polypropylene and polybutylene.

3. A ceramic material formulation for precision parts according to claim 1, characterized in that: the plasticizer of the invention adopts paraffin and microcrystalline paraffin.

4. A ceramic material formulation for precision parts according to claim 1, characterized in that: the coupling agent of the present invention is any one of silane, titanate, zirconate and aluminate.

5. A method for preparing a ceramic material of a precision part comprises the following steps: the method is characterized in that: weighing boron nitride, silicon nitride and an organic material according to the weight part of the ceramic formula, mixing, adding water, and performing ball milling to obtain slurry, wherein the slurry has the following process parameters: the balance of the sieve after sieving with a 250-mesh sieve is 2-3%, the water content is 30-40%, and the viscosity is 150-200 mpa.s:

preparing powder from the slurry under the condition of pressurization and drying, controlling the particle size distribution of the powder, aging the powder for 45 hours until the water content of the powder is 5-7%, and pressing and forming the powder to prepare a green body; drying the green body at 85-95 ℃ for 60 minutes to obtain a dry body, wherein the water content of the dry body is 1-2%; coating glaze slip on the surface of the dry blank to obtain a glaze blank; and firing the glaze blank at 1100-1150 ℃ for 110-130 minutes to obtain a ceramic product.

6. The method for producing a ceramic material for precision parts according to claim 5, wherein: the glaze raw material is put into a small ball mill and added with water for ball milling, glaze slip is prepared after 24 hours, the technological parameters of the glaze slip are that the glaze slip is sieved by a 250-mesh sieve, the rest is 0.1-0.2%, the water content of the glaze slip is 35-38%, the pH value is 6-8, and the glaze slip is sprayed to a dry blank to prepare a glaze blank.

Technical Field

The invention relates to the field of ceramic materials, in particular to a formula of a ceramic material for a precision part and a preparation method thereof.

Background

The ceramic industry is an industry with high energy consumption, high pollution, high resource consumption and low output, and in order to solve the problem of 'three high and one low', engineering technicians in the ceramic industry take measures of thinning building ceramics and lightening sanitary ceramics.

Generally, enterprises adopt high-grade raw materials as a formula of a ceramic body, and the sintering temperature of the ceramic body is higher due to the higher content of AI2O3 in the raw materials, and the sintering temperature of the formula of the ceramic body in most ceramic factories is about 1300 ℃. Usually, enterprises will adopt measures of widening and lengthening the kiln (generally up to 500 meters) to achieve the purposes of energy saving and consumption reduction, so as to realize rapid firing. However, the above method requires a large amount of capital investment for the modification of the kiln, and the floor space of the kiln is limited.

In addition, according to the information provided by the China Association for building and sanitary ceramics, the China has nearly ten thousand ceramic enterprises, the dosage of the high-quality kaolin reaches 2.8 hundred million tons every year, and the high-quality kaolin runs at such a speed, so that the high-quality kaolin is exhausted after 50 years in China, and most ceramic enterprises face difficult choices. Therefore, the task of exploring new formulations of ceramic green bodies is urgent.

In view of the above, there is a need for a ceramic material formulation for precision parts and a method for preparing the same, which overcome the deficiencies of the prior art.

Disclosure of Invention

Aiming at the defects of the ceramic in the prior art in production and causing great influence in the actual process, the invention provides a ceramic material formula of a precision part and a preparation method thereof, the ceramic material formula has the advantages of novel design, cheap raw materials, simple process, reduced firing temperature, reduced energy consumption, excellent energy-saving and environment-friendly performance, and the defects in the prior art are overcome.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the ceramic material formula of the precision part comprises the following components in parts by weight; 5-8 wt% of boron nitride, 80-90 wt% of silicon nitride and 10-20 wt% of organic material, wherein the organic material comprises thermoplastic resin, plasticizer and coupling agent, and the formula ratio of the thermoplastic resin to the plasticizing plastic is 5: 7, the weight of the coupling agent is 0.8-1%, the fluxing agent is shale, and the compatilizer is one of wollastonite, dolomite, talc and limestone.

Furthermore, the thermoplastic resin material is prepared by mixing any two of polyethylene, polypropylene and polybutylene.

The plasticizer of the invention adopts paraffin and microcrystalline paraffin.

The coupling agent of the present invention is any one of silane, titanate, zirconate and aluminate.

A method for preparing a ceramic material of a precision part comprises the following steps: weighing boron nitride, silicon nitride and an organic material according to the weight part of the ceramic formula, mixing, adding water, and performing ball milling to obtain slurry, wherein the slurry has the following process parameters: the balance of the sieve after sieving with a 250-mesh sieve is 2-3%, the water content is 30-40%, and the viscosity is 150-200 mpa.s:

preparing powder from the slurry under the condition of pressurization and drying, controlling the particle size distribution of the powder, aging the powder for 45 hours until the water content of the powder is 5-7%, and performing compression molding on the powder to prepare a green blank; drying the green body at 85-95 ℃ for 60 minutes to obtain a dry body, wherein the water content of the dry body is 1-2%; coating glaze slip on the surface of the dry blank to obtain a glaze blank; and firing the glaze blank at 1100-1150 ℃ for 110-130 minutes to obtain a ceramic product.

Further, the glaze raw material is put into a small-sized ball mill and is added with water for ball milling, glaze slip is prepared after 24 hours, the technological parameters of the glaze slip are that the glaze slip is sieved by a 250-mesh sieve, the residual quantity is 0.1-0.2%, the water content of the glaze slip is 35-38%, the pH value is 6-8, and the glaze slip is sprayed to a dry blank to prepare a glaze blank.

The invention has the beneficial effects that: the ceramic powder can be applied to the fields of daily ceramics, industrial and artistic ceramics, building ceramics, sanitary ceramics, garden ceramics and the like, has cheap raw materials and simple process, reduces the sintering temperature and reduces the energy consumption. The production cost is reduced, the investment of production equipment is reduced, the production efficiency and the enterprise benefit are improved, the practicability is excellent, the use is flexible, the design is novel, the method is a good innovation scheme, and the market popularization prospect is promising.

Detailed Description

The present invention is further described in order to make the technical means, the creation features, the achievement purposes and the effects of the present invention easy to understand.

The ceramic material formula of the precision part comprises the following components in parts by weight; 5-8 wt% of boron nitride, 80-90 wt% of silicon nitride and 10-20 wt% of organic material, wherein the organic material comprises thermoplastic resin, plasticizer and coupling agent, and the formula ratio of the thermoplastic resin to the plasticizing plastic is 5: 7, the weight of the coupling agent is 0.8-1%, the fluxing agent is shale, and the compatilizer is one of wollastonite, dolomite, talc and limestone.

In addition, the thermoplastic resin material is prepared by mixing any two of polyethylene, polypropylene and polybutylene.

The plasticizer adopts paraffin and microcrystalline paraffin.

The coupling agent is any one of silane, titanate, zirconate and aluminate.

A method for preparing a ceramic material of a precision part comprises the following steps: weighing boron nitride, silicon nitride and an organic material according to the weight part of the ceramic formula, mixing, adding water, and performing ball milling to obtain slurry, wherein the slurry has the following process parameters: the balance of the sieve after sieving with a 250-mesh sieve is 2-3%, the water content is 30-40%, and the viscosity is 150-200 mpa.s:

preparing powder from the slurry under the condition of pressurization and drying, controlling the particle size distribution of the powder, aging the powder for 45 hours until the water content of the powder is 5-7%, and performing compression molding on the powder to prepare a green blank; drying the green body at 85-95 ℃ for 60 minutes to obtain a dry body, wherein the water content of the dry body is 1-2%; coating glaze slip on the surface of the dry blank to obtain a glaze blank; and firing the glaze blank at 1100-1150 ℃ for 110-130 minutes to obtain a ceramic product.

The glaze raw material is put into a small ball mill and added with water for ball milling, glaze slip is prepared after 24 hours, the technological parameters of the glaze slip are that the glaze slip is sieved by a 250-mesh sieve with the residual amount of 0.1-0.2%, the water content of the glaze slip is 35-38%, the pH value is 6-8, and the glaze slip is sprayed to a dry blank to prepare a glaze blank.

The invention has the following effects: the ceramic is applied to the fields of daily ceramics, industrial and artistic ceramics, building ceramics, sanitary ceramics, garden ceramics and the like, has cheap raw materials and simple process, reduces the sintering temperature and reduces the energy consumption. The production cost is reduced, the investment of production equipment is reduced, the production efficiency and the enterprise benefit are improved, the practicability is excellent, the use is flexible, the design is novel, the method is a good innovation scheme, and the market promotion prospect is good.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.