TW202108729A - Enviroment-friendly sound insulation material - Google Patents

Abstract

An environment-friendly sound insulation material includes a slurry material obtained after a mixture of a mixed material, an alkali agent and a blowing agent is solidified. The mixed material contains steel slag occupying 30~80 wt% and inorganic sludge occupying 20~70 wt%. The cementitious slurry material is obtained by mixing the blowing material and the alkali agent together to produce foam first, and stirring with the mixed material uniformly. Elements of the slurry material is controlled to contain 27.0%~46.2% of silicon element, 24.2%~54.0% of calcium element, 12.7%~15.7% of aluminum element and 4.0~19.7% of sodium element. Thus, it can be self-solidified to form a qualified environment-friendly sound insulation material without additional heating or pressurization operation. Therefore, the industrial by-product is converted into resources for recycling effectively, and the production process has effects of environmental protection and low energy consumption.

Description

Environmental sound insulation material

The present invention relates to a sound-insulating material, especially an environmentally-friendly sound-insulating material.

Noise has become a major enemy in daily life, but it is difficult to deal with it. Among them, the common sound insulation materials in China, such as multilayer sound insulation board, hollow ceramsite board, white brick (ALC brick), etc., among them, the multilayer sound insulation board Usually there is a substrate layer, and two outer layers fixedly bonded to the two sides of the substrate layer, and the multilayer body is mostly in the form of adhesive bonding so that at least two layers of different materials are combined with each other, such as China According to the invention patent case of the Republic of China No. I250936, it is mainly to form a substrate layer and allow the substrate layer to cool and harden before proceeding with the gluing step. Finally, the outer layers are laminated. However, in the process of coating the adhesive Among them, the adhesive applied at the beginning is often cooled and hardened after the adhesive coating process is completed, and the hardened adhesive cannot provide better adhesion, resulting in unsatisfactory effect of multilayer building materials after bonding, and The strength is not high; in addition, the hollow ceramsite board is made of light ceramsite calcined at high temperature and hydraulic mortar. In the production of the lightweight ceramsite and cement, the materials used in addition to natural raw materials are used. In addition, high-temperature sintering is required in the process, which is not environmentally friendly. Finally, the ALC brick is made by adding aluminum powder as a foaming agent to the traditional cement mortar, and then undergoing high-temperature curing after forming.

In terms of the above-mentioned conventional sound insulation materials, its main raw materials are made of quarried silica sand, lime, kaolin and other materials, which cause damage to the ecological environment, and the production process is also extremely energy-intensive, resulting in an increase in carbon dioxide emissions. It is not environmentally friendly. Moreover, the amount of waste (steel slag, inorganic sludge) produced in my country in a year has a certain output, and if such waste is not properly treated, it may cause misuse of waste and cause resources In addition to waste, or improper treatment can also cause harm to the environment, and it also extends concerns about environmental protection; therefore, how to reduce the use of natural resources and turn industrial by-products into a usable material or resource.

Therefore, the purpose of the present invention is to provide an environmentally friendly sound-insulating material, which mainly uses industrial by-products as raw materials to reduce the exploitation and dependence on natural resources, and the production process also meets the effect of low energy consumption.

Therefore, the environmentally friendly sound insulation material of the present invention comprises a mixture, an alkali agent and a foaming agent, wherein the mixture includes 30% to 80% by weight of iron and steel ballast, and 20% to 70% The weight percentage of inorganic sludge, and the aforementioned inorganic sludge is selected with a silicon content of 0.79%-18.18%, a calcium element content of 0.03%~0.78%, and an aluminum element content of 0.22%~5.03%; in addition, alkali The addition amount of the agent is 26~32% by weight of the steel slag, the addition amount of the foaming agent is 0.2%~9.5% by weight of the steel slag, and the alkali agent and the foaming agent are first mixed to produce After air bubbles, the steel ballast and inorganic sludge are added to the alkali agent to break the covalent chain between the materials by the alkaline environment, and re-link to produce cementation and strength, and the mixed slurry The body range is 27.0%~46.2% for silicon, 24.2%~54.0% for calcium, 12.7%~15.7% for aluminum and 4.0%~19.7% for sodium, so that no additional heating or pressure is required during the production process. , It can be solidified to form a sound insulation material with good properties, no matter in the production process or the acquisition of raw materials and the use of renewable resources, it can achieve environmental protection.

The foregoing and other technical content, features, and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiment with reference to the drawings.

Referring to Figure 1, the first preferred embodiment of the environmentally friendly sound-insulating material of the present invention contains a mixture of a mixture, an alkali agent, a foaming agent, etc.; wherein, the mixture contains a 30% to 80% by weight Steel slag, and 20%~70% by weight of inorganic sludge, and the aforementioned steel slag is a by-product of the steelmaking process, and the selected composition of the steel slag is 23.72%~30.77 with a silicon content of 23.72%~30.77. %, the content of calcium element is 35.3%~45.78%, the content of aluminum element is 8.97%~11.64%, and the iron and steel ballast produces a slow reaction in an alkaline environment, producing cementitious products similar to cement hydration. The steel ballast can be prepared by using water-quenched furnace stone powder, or a mixture of 80% by weight of water-quenched furnace stone powder and 20% by weight of reduced ballast.

Continuing the foregoing, the inorganic sludge is selected with a silicon element content of 0.79%-18.18%, a calcium element content of 0.03%~0.78%, and an aluminum element content of 0.22%~5.03%, and its density is about 2500~3000 kg/ m ³ , it is used to fill the pores of the slurry and increase the compressive strength of the finished product. Therefore, the added amount can be adjusted according to the design compressive strength. The particle size range of the steel ballast and the inorganic sludge is 4500~5000cm ² /g is the best.

Furthermore, the addition amount of the alkali agent accounts for 26% to 32% of the steel ballast. The alkali agent can be sodium silicate, that is, use CNS No. 3 water glass, or it can be sodium hydroxide with a concentration of 45% by weight. It can provide an alkaline environment, thereby destroying the covalent chain between Si-O-Si and Al-O-Si in the material and breaking it, re-linking to produce bonding and strength; finally, the addition amount of the foaming agent is this Steel slag 0.2%~9.5% by weight, the foaming agent can be used for its silicon content of 0.79%~18.18%, a calcium element content of 0.03%~0.78%, and an aluminum element content of 0.22%~98.00% In fact, silicon mud can be used, such as waste sandblasting for manufacturing solar panels or materials that meet the above element conditions. The aluminum content of the silicon mud is 0.22%~2.38%, so the addition ratio of the steel ballast can be 2.5 Within the range of ~9.5% by weight, aluminum powder can also be used. Because the aluminum content in the aluminum powder is higher than 98% by weight, the proportion of addition to the steel ballast can be controlled at least 0.2%; see for details Figure 2. When mixing the environmentally friendly sound insulation material, it first mixes the foaming agent, and visually produces bubbles on the surface, then puts the steel ballast and inorganic sludge to stir, and waits for it to naturally condense to form a fixed That's it.

In order to prove that the above experimental examples are indeed implemented, the following will select and prepare different steel slag and inorganic sludge. At the same time, the foaming agent is 5% to 25% waste sandblasting and 2% to design different densities. To test the compressive strength and sound insulation effect separately: under the same ratio and different density, the sound insulation effect will decrease with the increase of the density, because the higher the density, the denser the interior, which is likely to cause sound transmission, so a plural number Numerical experiments:

name In the picture Codename Water quenching furnace stone powder Inorganic sludge Alkali Waste blasting Proportion A

70% 30% 26~32% 0.2~9.5% Proportion B

50% 50% 26~32% 0.2~9.5% Proportion C

75% 25% 26~32% 0.2~9.5% Proportion D

40% 60% 26~32% 0.2~9.5% Proportion E

30% 70% 26~32% 0.2~9.5%

100% 0% 4% 0.2% In addition, another example is given in this case at the same time. The steel slag is made of water quenched furnace stone powder at 80% by weight and 20% by weight, without inorganic sludge, and the foaming agent is combined with aluminum powder. test: name Code in the picture Water quenching furnace stone + reduction ballast Inorganic sludge Alkali Aluminum powder Proportion F

100% 0% 4% 0.2%

The content of each slurry composition prepared by the above ratio is as follows: name Silicon content Calcium content Aluminum content Sodium content Proportion A 33.9% 38.1% 12.7% 15.3% Proportion B 39.8% 32.8% 14.4% 13.0% Proportion C 31.9% 43.7% 13.0% 19.7% Proportion D 41.8% 24.9% 13.6% 19.7% Proportion E 46.2% 24.2% 15.7% 13.9% Proportion F 27.0% 54.0% 15.0% 4.0%

As mentioned in the above table, the main sources of silicon, calcium, and aluminum are steel slag and inorganic sludge, while the main source of sodium is alkaline agent. In this example, 45% sodium hydroxide is used as alkaline agent. The porosity and compressive strength were tested separately through the design of different densities, and the results are as follows:

To Alkali dosage (%) 32% 32% 32% 32% 32% 26% 26% Slurry 　　　　 Foaming agent Test content (%) 9.5% 8.5% 7.3% 6.7% 5.1% 3.5% 0.2% A Density (g/cm ³ ) 0.4 0.5 0.6 0.7 0.8 1.0 1.2 Porosity(%) 76.00 54.30 46.90 35.60 22.30 16.40 8.40 Compressive strength (kgf/cm ² ) 5.40 9.00 11.80 14.00 15.80 35.70 48.10 B Density (g/cm ³ ) 0.4 0.5 0.6 0.7 0.8 1.0 1.2 Porosity(%) 71.50 51.70 42.90 31.70 20.10 11.70 5.10 Compressive strength (kgf/cm ² ) 3.20 5.10 8.30 10.70 12.10 31.40 45.10 C Density (g/cm ³ ) 0.4 0.5 0.6 0.7 0.8 1.0 1.2 Porosity(%) 71.10 50.50 42.10 30.90 21.00 13.00 7.20 Compressive strength (kgf/cm ² ) 6.40 10.40 12.80 16.40 20.20 39.40 51.70 D Density (g/cm ³ ) 0.4 0.5 0.6 0.7 0.8 1.0 1.2 Porosity(%) 63.00 50.00 41.00 35.00 21.00 15.00 9.70 Compressive strength (kgf/cm ² ) 3.30 4.00 5.20 8.00 10.00 24.00 36.00 E Density (g/cm ³ ) 0.4 0.5 0.6 0.7 0.8 1.0 1.2 Porosity(%) 68.00 52.00 40.00 29.00 20.00 11.00 8.40 Compressive strength (kgf/cm ² ) 4.10 5.30 6.70 8.30 12.70 30.00 40.00

Refer to Figure 3, according to the above table, it can be seen that the test uses different mixing ratios of the steel ballast and inorganic sludge, and the relationship between the density and the porosity. When the porosity is higher, it represents the more internal pores. It has better sound insulation and sound absorption effect. It has been found through experiments that when the same 0.4 density design and the same proportion of alkali and foaming agent are added, the best porosity is A ratio (water quenching 70% of furnace stone: 30% of inorganic sludge), the porosity of 76.00% can be reached after testing, and it can be known from the proportion of C that when the water quenched furnace stone in the mixture exceeds 70%, the porosity On the contrary, the rate drops. Therefore, the best ratio of water quenching furnace stone additives in the mixture is 70%.

Refer to Figure 4, which tests the compressive strength (kgf/cm ² ), which is tested on the 7th day of age. According to the experimental examples, when the foaming agent is added, the compressive strength value will approximately decrease The loss varies from 3 to 20%, and when the foaming agent is added within 9.5%, it can meet the compressive strength required by general sound insulation materials; in addition, the main effect of sound insulation is the porosity. Grab the experimental data of the ratio C that is closest to the mid-range effect. Because the ratio C is in the middle stage in terms of porosity and compressive strength, test its sound insulation effect and infer other ratios. Whether it also has sound insulation effect, the test results are as follows:

After the foregoing experimental examples, it can be further proved that the sound insulation material of the present invention is composed of inorganic components, which provides performance that is less brittle than commercially available heat insulation materials, and also provides better sound insulation and compressive strength performance than general commercially available materials. .

In summary, the environmentally friendly sound insulation material of the present invention mixes a mixture, an alkali agent, and a foaming agent into a slurry. The mixture includes steel ballast and inorganic sludge. First, the foaming agent and the alkali agent are mixed to form a slurry. After air bubbles are generated after mixing, the steel ballast and the inorganic sludge are added to form a cementitious slurry after uniform mixing, and the blending range of the slurry elements is 27.0%~46.2% of silicon; The calcium element is 24.2%~54.0%; the aluminum element is 12.7%~15.7%; the sodium element is 4.0%~19.7%. It can be solidified to form a sound insulation material with good properties without additional heating or pressure. In addition to effectively converting the industrial by-products into a resource for recycling, the production process also has the effects of environmental protection and low energy consumption.

However, what has been described above is only to illustrate the preferred embodiments of the present invention, and should not be used to limit the scope of implementation of the present invention, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the content of the description of the invention. , Should still fall within the scope of the invention patent.

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Fig. 1 is a ratio diagram of the first preferred embodiment of the present invention. Figure 2 is a manufacturing flow chart of the first preferred embodiment of the present invention Figure 3 shows the density and porosity of each mixing ratio in this embodiment. Figure 4 shows the density and compressive strength of each mixing ratio in this embodiment.

Claims (9)

An environmentally friendly sound-insulating material, which comprises a mixture, an alkali agent and inorganic sludge. The mixture includes 30% to 80% by weight of iron and steel ballast, and 20% to 70% by weight. Inorganic sludge, and the aforementioned inorganic sludge is selected with a silicon content of 0.79%-18.18%, a calcium element content of 0.03%~0.78%, and an aluminum element content of 0.22%~5.03%; in addition, the alkali agent is added The amount is 26~32% by weight of the steel slag, the addition amount of the foaming agent is 0.2%~9.5% by weight of the steel slag, and the foaming agent is first mixed with the alkali agent to produce After air bubbles, add the steel ballast and the inorganic sludge, and mix them uniformly into a slurry, and the slurry element range is 27.0%~46.2% for silicon, 24.2%~54.0% for calcium, and aluminum. It is 12.7%~15.7% and the sodium element is 4.0%~19.7%, and the environment-friendly sound insulation material can be formed after the slurry is solidified. According to the environmental protection sound insulation material described in item 1 of the scope of patent application, the steel slag is a by-product of steel slag produced by the steelmaking process, and the selected silicon element content is 23.72%~30.77%, and a calcium element The content is 35.3%~45.78%, and the content of aluminum element is 8.97%~11.64%. According to the environmental protection sound insulation material described in item 1 of the scope of patent application, the alkali agent is sodium hydroxide with a concentration of 45% by weight. According to the environmental protection sound insulation material described in item 1 of the scope of patent application, the alkali agent is sodium silicate. According to the environmental protection sound insulation material described in item 4 of the scope of patent application, the sodium silicate is No. 3 water glass. According to the environmental protection sound insulation material described in item 1 of the scope of patent application, the foaming agent is selected with a silicon element content of 0.79%-18.18%, a calcium element content of 0.03%~0.78%, and an aluminum element content of 0.22%~ 98.00%. According to the environmental protection sound insulation material described in item 1 of the scope of patent application, the fineness range of the steel ballast and the inorganic sludge is selected from 4500 to 5000 cm ² /g. According to the environmental protection sound insulation material described in item 1 of the scope of patent application, the steel ballast is water quenched furnace stone powder. An environmentally friendly sound insulation material, which comprises a mixture and an alkali agent, wherein the mixture includes 80% by weight of water quenching furnace stone powder and 20% by weight of reducing slag; in addition, the alkali agent is added The amount is 26~32% by weight of the steel slag, the foaming agent is an aluminum powder, and the addition amount is 0.2% by weight of the steel slag, and the foaming agent is first combined with the alkali agent. After air bubbles are generated after mixing, the steel ballast is added and mixed uniformly to form a slurry, and the slurry element range is 27.0%~46.2% for silicon, 24.2%~54.0% for calcium, and 24.2% to 54.0% for aluminum. 12.7%~15.7% and sodium element is 4.0%~19.7%, and the environment-friendly sound insulation material can be formed after the slurry is solidified.

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