阅读说明：本技术 一种绝热性岩棉材料及其制备方法 (Heat-insulating rock wool material and preparation method thereof ) 是由 谢春竹 王永林 周文俊 于 2021-08-26 设计创作，主要内容包括：本发明涉及岩棉材料技术领域,具体为一种绝热性岩棉材料及其制备方法,包括岩棉组分和改性粘结剂,岩棉组分包括以下重量份原料：玄武岩100-220份、白云石100-200份、尾矿矿渣300-400份、焦炭60-80份、粉煤灰50-100份；本发明通过加入改性纳米二氧化硅和改性空心玻璃微珠,纳米二氧化硅的加入,形成网络结构,形成一种硅石结构,使之具有憎水性,提高粘结效果,也增加了岩棉材料的防渗性,而且,改性纳米二氧化硅和改性空心玻璃微珠的加入,使得粘结剂具有了良好的抗老化性能和低导热性,在长时间的光照和高温下,改性粘结剂依然保持着优良的粘结强度,有利于岩棉材料之间的粘结,保证了岩棉材料的整体性能。(The invention relates to the technical field of rock wool materials, in particular to a heat-insulating rock wool material and a preparation method thereof, wherein the heat-insulating rock wool material comprises a rock wool component and a modified binder, and the rock wool component comprises the following raw materials in parts by weight: 100-220 parts of basalt, 100-200 parts of dolomite, 300-400 parts of tailing slag, 60-80 parts of coke and 50-100 parts of fly ash; according to the invention, the modified nano silicon dioxide and the modified hollow glass beads are added to form a network structure, so that a silica structure is formed, the silica structure has hydrophobicity, the bonding effect is improved, the seepage resistance of the rock wool material is also improved, in addition, the modified nano silicon dioxide and the modified hollow glass beads are added, so that the bonding agent has good ageing resistance and low heat conductivity, the modified bonding agent still maintains excellent bonding strength under long-time illumination and high temperature, the bonding between rock wool materials is facilitated, and the overall performance of the rock wool material is ensured.)

1. The heat-insulating rock wool material is characterized by comprising a rock wool component and a modified binder, wherein the rock wool component comprises the following raw materials in parts by weight: 100-220 parts of basalt, 100-200 parts of dolomite, 300-400 parts of tailing slag, 60-80 parts of coke and 50-100 parts of fly ash.

2. The heat insulating rock wool material as recited in claim 1, wherein the rock wool component comprises the following raw materials in parts by weight: 150 parts of basalt, 140 parts of dolomite, 350 parts of tailing slag, 70 parts of coke and 80 parts of fly ash.

3. The heat-insulating rock wool material as claimed in claim 1, wherein the modified binder includes the following raw materials in parts by weight: 50-70 parts of phenolic resin, 10-12 parts of cyclohexanone, 5-8 parts of modified nano silicon dioxide, 9-14 parts of modified hollow glass beads and 2-4 parts of hexamethylenetetramine.

4. The heat-insulating rock wool material as claimed in claim 1, wherein the modified nano silica and the modified hollow glass beads are prepared by the following steps: adding a silane coupling agent and deionized water according to the weight ratio of 1: 10 mixing and uniformly stirring to obtain a mixed solution; according to the solid-liquid ratio of 1: and adding the nano silicon dioxide and the hollow glass beads into the mixed solution at a concentration of 5g/ml, and stirring for 30-40min to obtain the modified nano silicon dioxide and the modified hollow glass beads.

5. The heat-insulating rock wool material as claimed in claim 4, wherein the nano silica and the hollow glass beads are mixed in a mass ratio of 1: 2 adding into the mixed solution.

6. The heat-insulating rock wool material as claimed in claim 3, wherein the modified binder is prepared by the following steps:

s1: putting phenolic resin, cyclohexanone, modified nano-silica, modified hollow glass beads and hexamethylenetetramine into an electric heating stirrer, and stirring for 0.8-1.5h at the temperature of 40-45 ℃ to obtain a mixed material;

s2: and heating the mixed material to 90-95 ℃ at the speed of 5 ℃/min, and cooling to obtain the modified binder.

7. The method for preparing an adiabatic rock wool material as set forth in any one of claims 1 to 6, which comprises the following steps:

(1) conveying basalt, dolomite, tailing slag and coke into a crusher for crushing, mixing the crushed material with fly ash to obtain a mixture, and preheating the mixture to 300-400 ℃;

(2) putting the preheated mixture into a cupola furnace for melting to obtain a molten material;

(3) and centrifuging the molten material, drawing the molten material into fibers in the centrifuging process, and spraying a modified binder into the fibers to obtain flocculent cellucotton, namely the heat-insulating rock wool material.

8. The method as claimed in claim 7, wherein the melting temperature in step (2) is 1600-.

9. The method of claim 7, wherein the modified binder is injected in an amount of 10-12 wt% based on the total weight of the melt in the step (3).

Technical Field

The invention relates to the technical field of rock wool materials, in particular to a heat-insulating rock wool material and a preparation method thereof.

Background

With the rapid development of economy, the construction speed and scale of various buildings reach unprecedented heights, and in order to enable the buildings to meet the requirements of environmental protection and energy conservation, heat-insulating plates need to be additionally arranged on the outer walls of the buildings. The rock wool is a high-quality and high-efficiency heat-insulating material, has good heat-insulating, sound-insulating and sound-absorbing properties, has the outstanding advantages of small density, low heat conductivity coefficient, no combustion, fire resistance, no toxicity, wide application range, stable chemical properties, long service cycle and the like compared with the traditional heat-insulating material, and is a currently accepted ideal heat-insulating material.

The adhesive in the rock wool material plays a role in bonding between rock wool fibers, and the quality of the adhesive in the prior art is relatively common, so that the performance of a rock wool product made of the rock wool material is influenced. Therefore, we propose a heat-insulating rock wool material and a preparation method thereof to solve the above problems.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a heat-insulating rock wool material and a preparation method thereof, so as to overcome the problems mentioned in the background technology.

In order to achieve the above purpose, the technical scheme of the invention is realized by the following technical scheme: the heat-insulating rock wool material comprises a rock wool component and a modified binder, wherein the rock wool component comprises the following raw materials in parts by weight: 100-220 parts of basalt, 100-200 parts of dolomite, 300-400 parts of tailing slag, 60-80 parts of coke and 50-100 parts of fly ash.

Preferably, the rock wool component comprises the following raw materials in parts by weight: 150 parts of basalt, 140 parts of dolomite, 350 parts of tailing slag, 70 parts of coke and 80 parts of fly ash.

Preferably, the modified binder comprises the following raw materials in parts by weight: 50-70 parts of phenolic resin, 10-12 parts of cyclohexanone, 5-8 parts of modified nano silicon dioxide, 9-14 parts of modified hollow glass beads and 2-4 parts of hexamethylenetetramine.

Preferably, the preparation method of the modified nano-silica and the modified hollow glass bead comprises the following steps: adding a silane coupling agent and deionized water according to the weight ratio of 1: 10 mixing and uniformly stirring to obtain a mixed solution; according to the solid-liquid ratio of 1: and adding the nano silicon dioxide and the hollow glass beads into the mixed solution at a concentration of 5g/ml, and stirring for 30-40min to obtain the modified nano silicon dioxide and the modified hollow glass beads.

Preferably, the mass ratio of the nano silicon dioxide to the hollow glass beads is 1: 2 adding into the mixed solution.

Preferably, the preparation method of the modified binder is as follows: s1: putting phenolic resin, cyclohexanone, modified nano-silica, modified hollow glass beads and hexamethylenetetramine into an electric heating stirrer, and stirring for 0.8-1.5h at the temperature of 40-45 ℃ to obtain a mixed material; s2: and heating the mixed material to 90-95 ℃ at the speed of 5 ℃/min, and cooling to obtain the modified binder.

The invention also provides a preparation method of the heat-insulating rock wool material, which comprises the following steps:

(1) conveying basalt, dolomite, tailing slag and coke into a crusher for crushing, mixing the crushed material with fly ash to obtain a mixture, and preheating the mixture to 300-400 ℃;

(2) putting the preheated mixture into a cupola furnace for melting to obtain a molten material;

(3) and centrifuging the molten material, drawing the molten material into fibers in the centrifuging process, and spraying a modified binder into the fibers to obtain flocculent cellucotton, namely the heat-insulating rock wool material.

Preferably, in the step (2), the melting temperature is 1600-.

Preferably, in the step (3), the modified binder is injected in an amount of 10 to 12% by weight based on the total weight of the melt.

The invention has the beneficial effects that:

according to the invention, the modified nano silicon dioxide and the modified hollow glass beads are added, and the silane coupling agent is utilized to modify the surfaces of the nano silicon oxide and the hollow glass beads, so that the surfaces of the nano silicon oxide and the hollow glass beads are converted into lipophilicity, the full mixing and dispersing and compatible combination of the nano silicon oxide and the hollow glass beads and a substrate are facilitated, and the overall quality of the modified binder is improved; the addition of the nano silicon dioxide forms a network structure to form a silica structure, so that the silica structure has hydrophobicity, the bonding effect is improved, the seepage resistance of the rock wool material is also improved, in addition, the addition of the nano silicon dioxide and the hollow glass beads ensures that the bonding agent has good ageing resistance and low heat conductivity, the modified bonding agent still keeps excellent bonding strength under long-time illumination and high temperature, the bonding between the rock wool materials is facilitated, and the overall performance of the rock wool material is ensured;

the invention takes the tailing slag as the main raw material and is added with the fly ash, thereby realizing the reutilization of the waste and being beneficial to the environmental protection; meanwhile, the tailing slag is used as the main raw material, so that the using amount of basalt and dolomite is reduced, and resources are saved.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but 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.

Example 1

The heat-insulating rock wool material comprises rock wool components and a modified binder, wherein the rock wool components comprise the following raw materials in parts by weight: 100 parts of basalt, 100 parts of dolomite, 300 parts of tailing slag, 60 parts of coke and 50-parts of fly ash.

The modified binder comprises the following raw materials in parts by weight: 50 parts of phenolic resin, 10 parts of cyclohexanone, 5 parts of modified nano silicon dioxide, 9 parts of modified hollow glass beads and 2 parts of hexamethylenetetramine.

The preparation method of the modified nano-silica and the modified hollow glass bead comprises the following steps: adding a silane coupling agent KH550 and deionized water according to the weight ratio of 1: 10 mixing and uniformly stirring to obtain a mixed solution; according to the solid-liquid ratio of 1: adding the nano silicon dioxide and the hollow glass beads into the mixed solution at a concentration of 5g/ml, and stirring for 30min to obtain modified nano silicon dioxide and modified hollow glass beads; the mass ratio of the nano silicon dioxide to the hollow glass beads is 1: 2 adding into the mixed solution.

The modified binder is prepared as follows, S1: putting phenolic resin, cyclohexanone, modified nano-silica, modified hollow glass beads and hexamethylenetetramine into an electric heating stirrer, and stirring for 0.8h at 40 ℃ to obtain a mixed material; s2: and heating the mixed material to 90 ℃ at the speed of 5 ℃/min, and cooling to obtain the modified binder.

The preparation method of the heat-insulating rock wool material comprises the following steps:

(1) conveying basalt, dolomite, tailing slag and coke into a crusher for crushing, mixing the crushed material with fly ash to obtain a mixture, and preheating the mixture to 300 ℃;

(2) putting the preheated mixture into a cupola furnace to be melted at 1600 ℃ to obtain a molten material;

(3) centrifuging the molten material, drawing the molten material into fibers in the centrifugal process, spraying a modified binder into the fibers, wherein the spraying amount of the modified binder is 10 percent of the total weight of the molten material, and obtaining the flocculent cellucotton, namely the heat-insulating rock wool material.

Example 2

The heat-insulating rock wool material comprises rock wool components and a modified binder, wherein the rock wool components comprise the following raw materials in parts by weight: 150 parts of basalt, 140 parts of dolomite, 350 parts of tailing slag, 70 parts of coke and 80 parts of fly ash.

The modified binder comprises the following raw materials in parts by weight: 60 parts of phenolic resin, 11 parts of cyclohexanone, 6 parts of modified nano silicon dioxide, 12 parts of modified hollow glass beads and 3 parts of hexamethylenetetramine.

The preparation method of the modified nano-silica and the modified hollow glass bead comprises the following steps: adding a silane coupling agent KH540 and deionized water according to the weight ratio of 1: 10 mixing and uniformly stirring to obtain a mixed solution; according to the solid-liquid ratio of 1: adding the nano silicon dioxide and the hollow glass beads into the mixed solution at a concentration of 5g/ml, and stirring for 35min to obtain modified nano silicon dioxide and modified hollow glass beads; the mass ratio of the nano silicon dioxide to the hollow glass beads is 1: 2 adding into the mixed solution.

The modified binder is prepared as follows, S1: putting phenolic resin, cyclohexanone, modified nano-silica, modified hollow glass beads and hexamethylenetetramine into an electric heating stirrer, and stirring for 1h at 40 ℃ to obtain a mixed material; s2: and heating the mixed material to 95 ℃ at the speed of 5 ℃/min, and cooling to obtain the modified binder.

The preparation method of the heat-insulating rock wool material comprises the following steps:

(1) conveying basalt, dolomite, tailing slag and coke into a crusher for crushing, mixing the crushed material with fly ash to obtain a mixture, and preheating the mixture to 300 ℃;

(2) melting the preheated mixture in a cupola at 1800 ℃ to obtain a molten material;

(3) centrifuging the molten material, drawing the molten material into fibers in the centrifugal process, spraying a modified binder into the fibers, wherein the spraying amount of the modified binder is 10 percent of the total weight of the molten material, and obtaining the flocculent cellucotton, namely the heat-insulating rock wool material.

Example 3

The heat-insulating rock wool material comprises rock wool components and a modified binder, wherein the rock wool components comprise the following raw materials in parts by weight: 150 parts of basalt, 140 parts of dolomite, 350 parts of tailing slag, 70 parts of coke and 80 parts of fly ash.

The modified binder comprises the following raw materials in parts by weight: 65 parts of phenolic resin, 12 parts of cyclohexanone, 7 parts of modified nano silicon dioxide, 12 parts of modified hollow glass beads and 4 parts of hexamethylenetetramine.

The preparation method of the modified nano-silica and the modified hollow glass bead comprises the following steps: adding a silane coupling agent KH540 and deionized water according to the weight ratio of 1: 10 mixing and uniformly stirring to obtain a mixed solution; according to the solid-liquid ratio of 1: adding the nano silicon dioxide and the hollow glass beads into the mixed solution at a concentration of 5g/ml, and stirring for 40min to obtain modified nano silicon dioxide and modified hollow glass beads; the mass ratio of the nano silicon dioxide to the hollow glass beads is 1: 2 adding into the mixed solution.

The modified binder is prepared as follows, S1: putting phenolic resin, cyclohexanone, modified nano-silica, modified hollow glass beads and hexamethylenetetramine into an electric heating stirrer, and stirring for 0.8h at 45 ℃ to obtain a mixed material; s2: and heating the mixed material to 90 ℃ at the speed of 5 ℃/min, and cooling to obtain the modified binder.

The preparation method of the heat-insulating rock wool material comprises the following steps:

(1) conveying basalt, dolomite, tailing slag and coke into a crusher for crushing, mixing the crushed material with fly ash to obtain a mixture, and preheating the mixture to 350 ℃;

(2) putting the preheated mixture into a cupola furnace to melt at 2000 ℃ to obtain a molten material;

(3) centrifuging the molten material, drawing the molten material into fibers in the centrifugal process, spraying a modified binder into the fibers, wherein the spraying amount of the modified binder is 10 percent of the total weight of the molten material, and obtaining the flocculent cellucotton, namely the heat-insulating rock wool material.

Example 4

The heat-insulating rock wool material comprises rock wool components and a modified binder, wherein the rock wool components comprise the following raw materials in parts by weight: 150 parts of basalt, 140 parts of dolomite, 350 parts of tailing slag, 70 parts of coke and 80 parts of fly ash.

The modified binder comprises the following raw materials in parts by weight: 70 parts of phenolic resin, 12 parts of cyclohexanone, 8 parts of modified nano silicon dioxide, 14 parts of modified hollow glass beads and 4 parts of hexamethylenetetramine.

The preparation method of the modified nano-silica and the modified hollow glass bead comprises the following steps: adding a silane coupling agent KH570 and deionized water according to the weight ratio of 1: 10 mixing and uniformly stirring to obtain a mixed solution; according to the solid-liquid ratio of 1: adding the nano silicon dioxide and the hollow glass beads into the mixed solution at a concentration of 5g/ml, and stirring for 40min to obtain modified nano silicon dioxide and modified hollow glass beads; the mass ratio of the nano silicon dioxide to the hollow glass beads is 1: 2 adding into the mixed solution.

The modified binder is prepared as follows, S1: putting phenolic resin, cyclohexanone, modified nano-silica, modified hollow glass beads and hexamethylenetetramine into an electric heating stirrer, and stirring for 1.5 hours at the temperature of 45 ℃ to obtain a mixed material; s2: and heating the mixed material to 95 ℃ at the speed of 5 ℃/min, and cooling to obtain the modified binder.

The preparation method of the heat-insulating rock wool material comprises the following steps:

(1) conveying basalt, dolomite, tailing slag and coke into a crusher for crushing, mixing the crushed material with fly ash to obtain a mixture, and preheating the mixture to 400 ℃;

(2) putting the preheated mixture into a cupola furnace to melt at 2200 ℃ to obtain a molten material;

(3) centrifuging the molten material, drawing the filaments into fibers in the centrifuging process, spraying a modified binder into the fibers, wherein the spraying amount of the modified binder is 12 percent of the total weight of the molten material, and obtaining the flocculent cellucotton, namely the heat-insulating rock wool material.

Comparative example 1

On the basis of example 3, the modified binder was replaced with 2123 phenolic binder, the remainder remaining unchanged.

Performance detection

The test method comprises the following steps: the heat-insulating rock wool materials obtained in examples 1 to 4 and comparative example 1 were subjected to a cotton collecting machine to form a thin cotton felt, the cotton felt was stacked by a pendulum machine to form a multi-layer folded uniform cotton felt, the cotton felt was sent to a pleating machine to be pleated to obtain a pleated cotton felt, the pleated cotton felt was pressurized by a pressurizing machine and sent to a curing furnace to be cured to obtain a rock wool product, and the 5 kinds of rock wool products were subjected to performance testing.

Wherein, the compression strength test: GB/T13480-; perpendicular to the plane tensile strength determination: GB/T30804 is adopted; water absorption test: GB/T5486-2008 is adopted. Specific detection results are shown in table 1.

TABLE 1 Performance test

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.