Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As introduced in the background art, the defects of difficult uniform dispersion of basalt fibers and low paper strength exist in the prior art, and in order to solve the technical problems, the application provides a preparation method of basalt fiber paper.
The preparation method comprises the steps of firstly carrying out alkali treatment on basalt fiber slurry by adopting an alkali treatment agent to obtain basalt fibers after alkali treatment, then carrying out acid treatment on the basalt fiber slurry after alkali treatment by adopting an acid treatment agent to obtain basalt fibers after acid and alkali treatment, adding a dispersing agent into the basalt fiber slurry after acid and alkali treatment to disperse uniformly, then adding a mixture of an organic adhesive and an inorganic adhesive to disperse uniformly, diluting, carrying out inclined net forming and drying to obtain the basalt fiber paper.
According to the preparation method, the basalt fiber is pretreated by using acid and alkali, the dispersibility of the basalt fiber is improved, and meanwhile, the strength of the basalt fiber under different use conditions is improved by using the bonding effect of an organic adhesive and an inorganic adhesive, so that the basalt fiber paper with high evenness and high strength is prepared.
Preferably, the addition amount of the alkali treatment agent is 2 to 4% by mass of the basalt fiber. The alkali treating agent is sodium hydroxide. The effect of using sodium hydroxide is better.
Preferably, the addition amount of the acid treatment agent is 2-4% of the mass of the basalt fiber.
Preferably, the acid treatment agent is a mixture of hydrochloric acid, sulfuric acid and phosphoric acid. Further preferably, the mass ratio of the hydrochloric acid to the sulfuric acid to the phosphoric acid is 1:1: 1.
Preferably, the concentration of the slurry of basalt fiber in the acid treatment or alkali treatment is 2 to 5 mass%.
Preferably, after the acid treatment or the alkali treatment, the treated slurry is washed to be neutral.
Preferably, the treatment temperature of the acid treatment or the alkali treatment is 40-60 ℃, and the treatment time is 10-15 min. The stirring speed is 100-120 rpm.
Preferably, the addition amount of the dispersant is 0.1 to 0.3% of the mass of the basalt fiber.
Preferably, the dispersant is a mixture of sodium hexametaphosphate and polyethylene oxide. Sodium hexametaphosphate is an inorganic dispersant, and after various screens, better dispersants for basalt can be obtained by adopting sodium hexametaphosphate. Further preferably, the mass ratio of sodium hexametaphosphate to polyethylene oxide is 1: 1. The sodium hexametaphosphate can reduce the electrostatic acting force among fibers and is easy to disperse, good dispersion is realized, and the polyethylene oxide promotes the dispersion of the fibers by improving the viscosity of the system and simultaneously improves the stability of the dispersed fiber system. Experiments show that the proportion has the best effect.
Preferably, the organic adhesive is one or more of sodium carboxymethylcellulose, polyvinyl alcohol and polyacrylic acid. Further preferably, the organic adhesive is sodium carboxymethyl cellulose.
Preferably, the inorganic adhesive is one or more of water glass and alumina sol. Further preferably, the inorganic adhesive is a mixture of water glass and aluminum sol.
Preferably, the mass of the mixture of the organic adhesive and the inorganic adhesive is 20-40% of the mass of the basalt fiber.
Preferably, the mixture of the organic adhesive and the inorganic adhesive is sodium carboxymethylcellulose, and the mass ratio of the water glass to the alumina sol is 1:1: 1. The three adhesives screened are adhesives with good basalt fiber bonding property, the sodium carboxymethylcellulose plays a good bonding role at normal temperature, the sodium silicate and the alumina sol have poor bonding effect at normal temperature, but the bonding effect at high temperature is good, and the temperature resistance is good, so that the proportion is selected to obtain good bonding strength at normal temperature and high temperature.
Preferably, the mixture is diluted to 0.5 percent, then formed by using a wire screen with low concentration of 0.01 to 0.03 percent, and dried and formed at 105 ℃.
In another embodiment of the present application, there is provided basalt fiber paper obtained by the above-mentioned preparation method.
In a third embodiment of the application, an application of the basalt fiber paper in a temperature-resistant flame-retardant material is provided.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific examples and comparative examples.
Example 1:
(1) after the basalt fibers are dispersed into slurry, the concentration of the slurry is 3%, the slurry is treated by using an alkali treatment agent sodium hydroxide, the addition amount of the sodium hydroxide is 2% of the mass of the basalt fibers, the treatment temperature is 40 ℃, the stirring speed is 100rpm, the treatment time is 10 minutes, and after the alkali treatment agent is used for treatment, the slurry is washed to be neutral.
(2) After the basalt fibers are dispersed into pulp, the concentration of the pulp is 3%, the pulp is treated by using an acid treatment agent, the addition amount of the acid treatment agent is 2% of the mass of the basalt fibers, the treatment temperature is 40 ℃, the stirring speed is 100rpm, the treatment time is 10 minutes, after the acid treatment agent is treated, the pulp is cleaned to be neutral, and the acid treatment agent is hydrochloric acid, sulfuric acid and phosphoric acid according to the mass ratio of 1:1:1 by mixing.
(3) After the basalt fibers are dispersed into slurry, the concentration of the slurry is 2%, the stirring speed is 150rpm, a dispersing agent is added for dispersion, the adding amount of the dispersing agent is 0.1% of the mass of the basalt fibers, and the mass ratio of the dispersing agent to the polyethylene oxide is 1:1, after dispersing for 30min uniformly, adding an adhesive accounting for 20% of the mass of the basalt fiber, continuously dispersing for 30min uniformly, diluting to 0.5%, forming by using an inclined wire with low concentration of 0.01%, and drying and forming at 105 ℃ to obtain the basalt fiber paper, wherein the adhesive is sodium carboxymethylcellulose, water glass and alumina sol, and the mass ratio of the adhesive is 1:1:1 to obtain the compound.
Example 2:
(1) after the basalt fibers are dispersed into slurry, the concentration of the slurry is 5%, the slurry is treated by using an alkali treatment agent sodium hydroxide, the addition amount of the sodium hydroxide is 3% of the mass of the basalt fibers, the treatment temperature is 50 ℃, the stirring speed is 110rpm, the treatment time is 13 minutes, and after the alkali treatment agent is used for treatment, the slurry is washed to be neutral.
(2) After the basalt fibers are dispersed into pulp, the concentration of the pulp is 5%, the pulp is treated by using an acid treatment agent, the addition amount of the acid treatment agent is 3% of the mass of the basalt fibers, the treatment temperature is 50 ℃, the stirring speed is 110rpm, the treatment time is 13 minutes, after the acid treatment agent is treated, the pulp is cleaned to be neutral, and the acid treatment agent is hydrochloric acid, sulfuric acid and phosphoric acid according to the mass ratio of 1:1:1 by mixing.
(3) After the basalt fibers are dispersed into slurry, the concentration of the slurry is 3%, the stirring speed is 130rpm, a dispersing agent is added for dispersion, the adding amount of the dispersing agent is 0.2% of the mass of the basalt fibers, and the mass ratio of the dispersing agent to the polyethylene oxide is 1:1, after dispersing for 30min uniformly, adding an adhesive accounting for 30% of the mass of the basalt fiber, continuously dispersing for 30min uniformly, diluting to 0.5%, forming by using an inclined wire at a low concentration of 0.03%, and drying and forming at 105 ℃ to obtain the basalt fiber paper, wherein the adhesive is sodium carboxymethylcellulose, water glass and alumina sol, and the mass ratio of the adhesive is 1:1:1 to obtain the compound.
Example 3:
(1) after the basalt fibers are dispersed into slurry, the concentration of the slurry is 6%, the slurry is treated by using an alkali treatment agent sodium hydroxide, the addition amount of the sodium hydroxide is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, and after the alkali treatment agent is used for treatment, the slurry is washed to be neutral.
(2) After the basalt fibers are dispersed into pulp, the concentration of the pulp is 6%, the pulp is treated by using an acid treatment agent, the addition amount of the acid treatment agent is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, after the acid treatment agent is treated, the pulp is cleaned to be neutral, and the acid treatment agent is hydrochloric acid, sulfuric acid and phosphoric acid according to the mass ratio of 1:1:1 by mixing.
(3) After the basalt fibers are dispersed into slurry, the concentration of the slurry is 5%, the stirring speed is 200rpm, a dispersing agent is added for dispersion, the adding amount of the dispersing agent is 0.3% of the mass of the basalt fibers, and the mass ratio of the dispersing agent to the polyethylene oxide is 1:1, after dispersing for 30min uniformly, adding an adhesive accounting for 40% of the mass of the basalt fiber, continuously dispersing for 30min uniformly, diluting to 0.5%, forming by using an inclined wire at a low concentration of 0.03%, and drying and forming at 105 ℃ to obtain the basalt fiber paper, wherein the adhesive is sodium carboxymethylcellulose, water glass and alumina sol, and the mass ratio of the adhesive is 1:1:1 to obtain the compound.
Example 4:
(1) after the basalt fibers are dispersed into slurry, the concentration of the slurry is 6%, the slurry is treated by using an alkali treatment agent sodium hydroxide, the addition amount of the sodium hydroxide is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, and after the alkali treatment agent is used for treatment, the slurry is washed to be neutral.
(2) After the basalt fibers are dispersed into slurry, the concentration of the slurry is 5%, the stirring speed is 200rpm, a dispersing agent is added for dispersion, the adding amount of the dispersing agent is 0.3% of the mass of the basalt fibers, and the mass ratio of the dispersing agent to the polyethylene oxide is 1:1, after dispersing for 30min uniformly, adding an adhesive accounting for 40% of the mass of the basalt fiber, continuously dispersing for 30min uniformly, diluting to 0.5%, forming by using an inclined wire at a low concentration of 0.03%, and drying and forming at 105 ℃ to obtain the basalt fiber paper, wherein the adhesive is sodium carboxymethylcellulose, water glass and alumina sol, and the mass ratio of the adhesive is 1:1:1 to obtain the compound.
Example 5:
(1) after the basalt fibers are dispersed into pulp, the concentration of the pulp is 6%, the pulp is treated by using an acid treatment agent, the addition amount of the acid treatment agent is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, after the acid treatment agent is treated, the pulp is cleaned to be neutral, and the acid treatment agent is hydrochloric acid, sulfuric acid and phosphoric acid according to the mass ratio of 1:1:1 by mixing.
(2) After the basalt fibers are dispersed into slurry, the concentration of the slurry is 5%, the stirring speed is 200rpm, a dispersing agent is added for dispersion, the adding amount of the dispersing agent is 0.3% of the mass of the basalt fibers, and the mass ratio of the dispersing agent to the polyethylene oxide is 1:1, after dispersing for 30min uniformly, adding an adhesive accounting for 40% of the mass of the basalt fiber, continuously dispersing for 30min uniformly, diluting to 0.5%, forming by using an inclined wire at a low concentration of 0.03%, and drying and forming at 105 ℃ to obtain the basalt fiber paper, wherein the adhesive is sodium carboxymethylcellulose, water glass and alumina sol, and the mass ratio of the adhesive is 1:1:1 to obtain the compound.
Example 6:
(1) after the basalt fibers are dispersed into slurry, the concentration of the slurry is 6%, the slurry is treated by using an alkali treatment agent sodium hydroxide, the addition amount of the sodium hydroxide is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, and after the alkali treatment agent is used for treatment, the slurry is washed to be neutral.
(2) After the basalt fibers are dispersed into pulp, the concentration of the pulp is 6%, the pulp is treated by using an acid treatment agent, the addition amount of the acid treatment agent is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, after the acid treatment agent is treated, the pulp is cleaned to be neutral, and the acid treatment agent is hydrochloric acid, sulfuric acid and phosphoric acid according to the mass ratio of 1:1:1 by mixing.
(3) After the basalt fibers are dispersed into slurry, the concentration of the slurry is 5%, the stirring speed is 200rpm, a dispersing agent is added for dispersion, the adding amount of the dispersing agent is 0.3% of the mass of the basalt fibers, and the mass ratio of the dispersing agent to the polyethylene oxide is 1:1, dispersing for 30min uniformly, adding an adhesive accounting for 40% of the mass of the basalt fiber, continuously dispersing for 30min uniformly, diluting to 0.5%, forming by using an inclined wire at a low concentration of 0.03%, and drying and forming at 105 ℃ to obtain the basalt fiber paper, wherein the adhesive is sodium carboxymethylcellulose.
Example 7:
(1) after the basalt fibers are dispersed into slurry, the concentration of the slurry is 6%, the slurry is treated by using an alkali treatment agent sodium hydroxide, the addition amount of the sodium hydroxide is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, and after the alkali treatment agent is used for treatment, the slurry is washed to be neutral.
(2) After the basalt fibers are dispersed into pulp, the concentration of the pulp is 6%, the pulp is treated by using an acid treatment agent, the addition amount of the acid treatment agent is 4% of the mass of the basalt fibers, the treatment temperature is 60 ℃, the stirring speed is 120rpm, the treatment time is 15 minutes, after the acid treatment agent is treated, the pulp is cleaned to be neutral, and the acid treatment agent is hydrochloric acid, sulfuric acid and phosphoric acid according to the mass ratio of 1:1:1 by mixing.
(3) After the basalt fibers are dispersed into slurry, the concentration of the slurry is 5%, the stirring speed is 200rpm, a dispersing agent is added for dispersion, the adding amount of the dispersing agent is 0.3% of the mass of the basalt fibers, and the mass ratio of the dispersing agent to the polyethylene oxide is 1:1, after dispersing for 30min uniformly, adding an adhesive accounting for 40% of the mass of the basalt fiber, continuously dispersing for 30min uniformly, diluting to 0.5%, forming by using an inclined wire at a low concentration of 0.03%, and drying and forming at 105 ℃ to obtain the basalt fiber paper, wherein the adhesive is water glass and alumina sol, and the mass ratio of the adhesive is 1:1 to obtain the compound.
Examples fiber paper strength and temperature resistance data
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.