阅读说明：本技术 一种高性能真空石的制备方法 (Preparation method of high-performance vacuum stone ) 是由 钱学锋 于 2019-11-21 设计创作，主要内容包括：本发明公开了一种高性能真空石的制备方法,属于真空石制备技术领域,包括如下步骤：(1)改性填料的制备；(2)原料称取；(3)混合料的制备；(4)布料；(5)成型。本发明针对现今真空石存在的缺点与不足,研究开发了一种高性能真空石的制备方法,通过在其中添加一种改性复合填料,并改善其制备工艺,有效的降低了真空石的吸水率以及耐磨损体积,其防水耐磨性能得到显著的改善,同时提高了其破坏强度,从很大程度上提高了真空石的力学性能,综合性能极佳,适用范围广泛。(The invention discloses a preparation method of a high-performance vacuum stone, belonging to the technical field of preparation of vacuum stones and comprising the following steps: (1) preparing modified filler; (2) weighing raw materials; (3) preparing a mixture; (4) distributing; (5) and (5) molding. Aiming at the defects of the existing vacuum stone, the invention researches and develops the preparation method of the high-performance vacuum stone, and by adding the modified composite filler and improving the preparation process, the water absorption rate and the wear-resistant volume of the vacuum stone are effectively reduced, the waterproof and wear-resistant performance of the vacuum stone is obviously improved, the breaking strength of the vacuum stone is improved, the mechanical property of the vacuum stone is improved to a great extent, the comprehensive performance is excellent, and the application range is wide.)

1. The preparation method of the high-performance vacuum stone is characterized by comprising the following steps of:

(1) preparing the modified filler:

a. putting pottery clay into a bead mill for grinding, grinding at the rotating speed of 800-900 rpm for 30-40 min, and sieving with a 40-80 mesh sieve to obtain pottery clay powder for later use;

b. putting lanthanum nitrate into a bead mill for grinding, grinding at the rotating speed of 3000-3400 rpm for 32-40 min, and sieving with a 200-300-mesh sieve to obtain lanthanum nitrate powder for later use;

c. uniformly mixing the argil powder obtained in the operation a and the lanthanum nitrate powder obtained in the operation b according to the weight ratio of 10-14: 0.8-0.9, putting the mixture into a calcining furnace for calcining treatment, and cooling to room temperature after calcining treatment for 34-40 min, and taking out the mixed powder for later use;

d. putting the mixed powder and the modification liquid obtained in the operation c into a reaction kettle together according to the weight-volume ratio of 1-2 g: 80-100 mL, stirring and uniformly mixing, raising the temperature in the reaction kettle to 120-160 ℃, raising the pressure in the reaction kettle to 2-4 MPa, maintaining the pressure for 6-10 min, filtering and drying;

(2) weighing raw materials:

weighing 92-93 parts of quartz particles, 4-5 parts of broken stone particles, 2-3 parts of broken glass particles, 1-2 parts of broken metal particles, 3-4 parts of river sand, 1-2 parts of sea sand, 7-9 parts of modified filler obtained in the step (1) and 60-80 parts of liquid filler in corresponding parts by weight for later use;

(3) preparing a mixture:

a. stirring and uniformly mixing the quartz particles, the broken stone particles, the broken glass particles, the broken metal particles, the river sand and the sea sand weighed in the step (2), placing the mixture in a low-energy proton irradiation box for proton irradiation treatment, and taking out the mixed particles for later use after 20-24 min of treatment;

b. firstly, putting the mixed particles obtained in the operation a and the modified filler weighed in the step (2) into a stirring tank together, continuously stirring at the rotating speed of 200-300 rpm, performing ultrasonic impact treatment while stirring, and stirring for 50-60 min;

c. putting the liquid filler weighed in the step (2) into a stirring tank in the operation b, stirring at the rotating speed of 500-600 rpm for 30-40 min, then continuing stirring at the rotating speed of 100-200 rpm for 20-30 min, and vacuumizing while continuing stirring;

(4) material distribution:

spreading the mixture obtained in the step (3) in a forming die for material distribution to form a plate-shaped structure to be pressed, and irradiating ultraviolet rays while distributing the material;

(5) molding:

and (4) pressing and forming the plate-shaped structure to be pressed formed in the step (4) under the mutual synergistic action of the vacuum force and the impact force of the heavy hammer.

2. The method for preparing high-performance vacuum stone as claimed in claim 1, wherein the calcining temperature in the calcining furnace in the operation c of the step (1) is 580-620 ℃.

3. The method for preparing high-performance vacuum stone as claimed in claim 1, wherein the modifying solution in the operation d of the step (1) comprises the following components in percentage by weight: 5-6% of glyceryl monostearate, 6-8% of oleamide, 1-3% of oleic acid, 2-3% of a silane coupling agent and the balance of absolute ethyl alcohol.

4. The method for preparing high-performance vacuum stone according to claim 1, wherein the parameters of proton irradiation in the operation a of step (3) are as follows: the proton energy is 3-4 MeV, and the proton fluence is 4-5 × 10⁸p/cm²。

5. The method for preparing high-performance vacuum stone according to claim 1, wherein the frequency of the ultrasonic wave is 32 to 34kHz during the ultrasonic wave impact treatment in the operation b of the step (3).

6. The method for preparing high-performance vacuum stone according to claim 1, wherein the wavelength of the ultraviolet light in the step (4) is 300-330 nm.

7. The method for preparing high-performance vacuum stone as claimed in claim 1, wherein the pressing time in step (5) is 1-2 min, and the pressure per square meter is 20-30 tons.

Technical Field

The invention belongs to the technical field of preparation of vacuum stones, and particularly relates to a preparation method of a high-performance vacuum stone.

Background

The vacuum stone is a new generation of wall and floor stone produced by a leading 'baking-free vacuum heterogeneous polymerization technology' in the world through independent research and development, various particle aggregates are polymerized and molded in a 'baking-free' mode, and the multipurpose new stone which is safe, green, environment-friendly and excellent in performance is produced. Compared with the existing wall and floor stone, the vacuum stone is safer, more convenient and more durable, and has richer styles.

However, because the preparation process adopts a baking-free way for polymerization forming, the performance, particularly the mechanical property, of the final product is relatively weak, the research on enhancing and improving the performance of the vacuum stone in the prior art is very little, and the improvement effect is not very obvious, for example, application number 201710055420.3 discloses a preparation process and coloring equipment of the linear texture vacuum stone, which comprises the following steps of preparing a mixture, wherein the mixture is prepared by mixing granular aggregate with different grain sizes and a liquid filler; rolling the mixture, namely rolling the fluffy mixture, and tightly rolling the mixture to form a flat surface; the method comprises the following steps of (1) coloring a mixture, namely spreading coloring powder on a flat surface of the mixture, and enabling the coloring powder to be closely attached to the flat surface of the mixture; preparing a blocky mixture, and dispersing the compact mixture to prepare the blocky mixture attached with the coloring powder; distributing, namely distributing by using the blocky mixture to form a plate-shaped structure to be pressed; and (4) forming, namely pressing the plate-shaped structure to be pressed to prepare the vacuum stone with linear textures. The vacuum stone pressed by the invention has obvious linear texture, so that the vacuum stone is closer to natural stone. The invention mainly solves the problem that the vacuum stone on the market does not have the patterns with the linear textures, the preparation process of the vacuum stone is not improved basically for other performances of the vacuum stone, and a plurality of problems exist in practical application.

Disclosure of Invention

The invention aims to provide a preparation method of high-performance vacuum stone aiming at the existing problems.

The invention is realized by the following technical scheme:

a preparation method of high-performance vacuum stone comprises the following steps:

(1) preparing the modified filler:

a. putting pottery clay into a bead mill for grinding, grinding at the rotating speed of 800-900 rpm for 30-40 min, and sieving with a 40-80 mesh sieve to obtain pottery clay powder for later use;

b. putting lanthanum nitrate into a bead mill for grinding, grinding at the rotating speed of 3000-3400 rpm for 32-40 min, and sieving with a 200-300-mesh sieve to obtain lanthanum nitrate powder for later use;

c. uniformly mixing the argil powder obtained in the operation a and the lanthanum nitrate powder obtained in the operation b according to the weight ratio of 10-14: 0.8-0.9, putting the mixture into a calcining furnace for calcining treatment, and cooling to room temperature after calcining treatment for 34-40 min, and taking out the mixed powder for later use;

d. putting the mixed powder and the modification liquid obtained in the operation c into a reaction kettle together according to the weight-volume ratio of 1-2 g: 80-100 mL, stirring and uniformly mixing, raising the temperature in the reaction kettle to 120-160 ℃, raising the pressure in the reaction kettle to 2-4 MPa, maintaining the pressure for 6-10 min, filtering and drying;

(2) weighing raw materials:

weighing 92-93 parts of quartz particles, 4-5 parts of broken stone particles, 2-3 parts of broken glass particles, 1-2 parts of broken metal particles, 3-4 parts of river sand, 1-2 parts of sea sand, 7-9 parts of modified filler obtained in the step (1) and 60-80 parts of liquid filler in corresponding parts by weight for later use;

(3) preparing a mixture:

a. stirring and uniformly mixing the quartz particles, the broken stone particles, the broken glass particles, the broken metal particles, the river sand and the sea sand weighed in the step (2), placing the mixture in a low-energy proton irradiation box for proton irradiation treatment, and taking out the mixed particles for later use after 20-24 min of treatment;

b. firstly, putting the mixed particles obtained in the operation a and the modified filler weighed in the step (2) into a stirring tank together, continuously stirring at the rotating speed of 200-300 rpm, performing ultrasonic impact treatment while stirring, and stirring for 50-60 min;

c. putting the liquid filler weighed in the step (2) into a stirring tank in the operation b, stirring at the rotating speed of 500-600 rpm for 30-40 min, then continuing stirring at the rotating speed of 100-200 rpm for 20-30 min, and vacuumizing while continuing stirring;

(4) material distribution:

spreading the mixture obtained in the step (3) in a forming die for material distribution to form a plate-shaped structure to be pressed, and irradiating ultraviolet rays while distributing the material;

(5) molding:

and (4) pressing and forming the plate-shaped structure to be pressed formed in the step (4) under the mutual synergistic action of the vacuum force and the impact force of the heavy hammer.

Further, the temperature of the calcination furnace in the operation c of the step (1) is 580-620 ℃.

Further, the modifying solution in the operation d of the step (1) comprises the following components in percentage by weight: 5-6% of glyceryl monostearate, 6-8% of oleamide, 1-3% of oleic acid, 2-3% of a silane coupling agent and the balance of absolute ethyl alcohol.

Further, the parameters of proton irradiation in operation a of step (3) are as follows: the proton energy is 3-4 MeV, and the proton fluence is 4-5 × 10⁸p/cm²。

Further, when the ultrasonic impact treatment is performed in the operation b in the step (3), the frequency of the ultrasonic is 32-34 kHz.

Further, the wavelength of the ultraviolet rays in the step (4) is 300-330 nm.

Further, the time for press forming in the step (5) is 1-2 min, and the pressure per square meter is 20-30 tons.

The invention provides a preparation method of high-performance vacuum stone, which is characterized in that a specially-made modified filler is specially added in the preparation of a mixture, the incompatibility between an inorganic filler and a matrix component is overcome, the mechanical property of the vacuum stone is effectively enhanced, in the preparation of the modified filler, pottery clay and lanthanum nitrate are respectively ground into powders with different fineness and then are uniformly mixed, then the powders are put into a calcining furnace for calcining, in the calcining process, the crystallinity and the polymerization degree of the pottery clay are reduced under the action of heat energy of the two components and are contacted and combined with lanthanum nitrate powder, the lanthanum nitrate can form a huge molecular net structure on the surface of the pottery clay powder, on one hand, the dispersibility of the lanthanum nitrate in the matrix component is improved, on the other hand, the agglomeration phenomenon of the lanthanum nitrate is prevented, on the other hand, the mechanical property of the vacuum stone is obviously improved, and then the mixture is treated by a modified liquid in a high-temperature and high-pressure environment, further enhancing the properties of the modified filler such as breaking strength, wear resistance and the like. In the preparation of the finished product, matrix components such as quartz particles, broken stone particles, broken glass particles and the like are uniformly mixed and then subjected to proton irradiation treatment, the proton irradiation can form weak etching on the surface of the mixed particles, on one hand, the mutual fusion of different components is promoted, the agglomeration is prevented, on the other hand, a foundation is laid for the adhesion of a modified filler, then, the high-performance filler and the matrix mixed particles are uniformly mixed, under the action of ultrasonic impact, modified filler powder is attached to etched parts on the surfaces of the mixed particles to form reinforcing tissues and strengthen the mechanical property of the vacuum stone, then, under the action of a liquid filler, vacuum stirring is carried out, the filler fills gaps of the particles, at the moment, material distribution is carried out, ultraviolet curing is carried out after the material distribution, and finally, compression molding is carried out under the synergistic action of vacuum force and heavy hammer impact force, so that the vacuum stone with stable structure and excellent performance is formed.

Compared with the prior art, the invention has the following advantages:

aiming at the defects of the existing vacuum stone, the invention researches and develops the preparation method of the high-performance vacuum stone, and by adding the modified composite filler and improving the preparation process, the water absorption rate and the wear-resistant volume of the vacuum stone are effectively reduced, the waterproof and wear-resistant performance of the vacuum stone is obviously improved, the breaking strength of the vacuum stone is improved, the mechanical property of the vacuum stone is improved to a great extent, the comprehensive performance is excellent, and the application range is wide.

Detailed Description