TWI732382B - Method for constructing heat-insulating wall surface by using oyster shells - Google Patents

Abstract

The present invention relates to a method for constructing a heat-insulting wall surface by using oyster shells, including the following steps: attaching a plurality of first-layer oyster shells on a wall surface via their respective first pearl layers, wherein the wall surface faces a heat source, and each of the first-layer oyster shells has a first hardened layer facing the heat source; attaching a plurality of second-layer oyster shells to the first-layer oyster shells with their respective second hardened layers contacting with the first hardened layers of the first-layer oyster shells, wherein each of the second-layer oyster shells has a second pearl layer facing the heat source. The second pearl layers blocks a heat energy emitted by the heat source, inhibits the heat energy from being transmitted to an opposite side of the wall surface through the second-layer oyster shells and the first-layer oyster shells, and consequently provides an excellent heat-insulating effect for walls and interiors.

Description

Method of constructing insulated wall with oyster shell

The present invention relates to a wall construction method that can provide the best heat insulation and heat dissipation effects for walls and indoors.

According to statistics, the weight of oyster shells produced in Taiwan each year is as high as 160,000 metric tons. Because the added value of oyster shells is not high, in the past, only a small amount was used in building materials, soil amendments or chicken and duck feed, and most of them were random piles. Abandoned, and the residual meat on the oyster shell is easy to breed mosquitoes and flies, and the foul smell generated by high temperature and sunshine, etc., will also cause environmental pollution. Therefore, if these discarded oyster shells can be further effectively used, it will not only solve the environmental protection problems caused by dumping of oyster shells, but also make its application scope wider and increase its added value.

Therefore, there is a patent case of Invention No. CN105669089 "A humidity-adjustable building material and its preparation method" announced on March 2, 2018 in Mainland China, which discloses that the building material includes the following components: hollow glass beads, Attapulgite clay, bentonite, essential element, oyster shell powder, kyanite, nano zinc oxide, polyacrylate, polyacrylamide, acrylic acid-acrylamide copolymer, carboxyethyl cellulose. The building materials composed of its various components are green and environmentally friendly, not only can regulate the humidity of the living indoor environment, but also have the functions of fire prevention, sound insulation, moisture resistance, antibacterial, etc., and improve the comfort of living.

Since the oyster shell has been ground into powder, its heat dissipation effect is poor, and the entity of the oyster shell cannot be reused for other purposes, which forms another waste and cannot enhance its added value, so it is a pity.

Therefore, there is Invention No. 201805509 "Application of Green Technology Materials" published on February 16, 107 of the Republic of China, which discloses that it is used to construct a building, which includes a wall structure and a composite board structure . The wall structure includes a plurality of annularly arranged and interconnected blocks, each block includes at least one protruding strip, and at least one chute for tenoning the protruding strip, wherein the material composition of the block is determined by It is made of cement, shellfish powder (such as oyster shell, clam shell, etc.) and fiber. The composite board structure includes a first light-transmitting substrate, a second light-transmitting substrate, a third light-transmitting substrate, two heat-insulating spaces, and a plastic frame body surrounding the heat-insulating space, and the plastic frame body is tightly connected The first transparent substrate, the second transparent substrate, and the third transparent substrate are used to seal the heat-insulating space.

The previous patent case also grinds oyster shells into powder for use as building materials for fire prevention, shock resistance, and cooling in summer and warmth. However, the powdery oyster shell can achieve poor heat dissipation effect, and can only achieve the function of fire prevention and moisture resistance, so it is obviously different from the technical characteristics of this case.

In view of this, the current use of oyster shells for construction has the above-mentioned shortcomings. Therefore, the present invention provides a method for constructing an insulated wall surface with oyster shells, which includes: combining a first nacre layer of a plurality of first layers of oyster shells on a wall surface facing a heat source, and making the first layers A first hardened layer of the oyster shell faces the heat source; a second hardened layer of a plurality of second layers of oyster shells is bonded to the first hardened layer of the first layers of oyster shells, and the second layers A second nacre of the oyster shell faces the heat source.

The second hardened layer and the first hardened layers are combined with a bonding agent.

The above-mentioned binder system is cement.

Before the first layer of oyster shell is bonded to the wall, the first layer of oyster shell is treated with a low-concentration organic acid solution in advance so that the surface of the first hardened layer of the first layer of oyster shell will be A plurality of first micropores are generated, and the binding agent enters the first micropores.

Before the second layer of oyster shells are combined with the first layer of oyster shells, the second layer of oyster shells are treated with a low-concentration organic acid solution in advance to make the second layer of oyster shells A plurality of second micropores are formed on the surface of the hardened layer, and the bonding agent can enter the second micropores.

The above-mentioned organic acid solution is citric acid with a concentration of 10%-20%, and is treated at a temperature of 25°C to 60°C for 20 minutes to 30 minutes.

The first layer of oyster shells and the second layer of oyster shells are respectively staggered and combined.

The second hardened layer of any of the above-mentioned second layer of oyster shells corresponds to the position between the two first hardened layers of any two adjacent or more of the first layer of oyster shells, and any one of the first layer of oysters The first hardened layer of the shell corresponds to a position between the two second hardened layers of any two adjacent or more second layer of oyster shells.

A plurality of heat dissipation gaps are formed between the first layer of oyster shells and the second layer of oyster shells.

Through the second nacre layer, the heat energy emitted by the heat source can be blocked, and the heat energy can be reduced to be transferred to the other side of the wall through the second layer of oyster shells and the first layer of oyster shells.

The above technical features have the following advantages:

1. Using two layers of oyster shells that are bonded to each other, it can be combined with walls or roofs that need heat insulation. The nacre structure of the oyster shell facing the sun is smooth, not easy to accumulate dust, can reflect light, and has the effect of anti-radiation. Insulation resistance, so that heat energy is not easily transferred to the other side of the wall or roof through the two-layer oyster shell, so as to provide the best indoor insulation effect.

2. Before combining the two layers of oyster shells, it is necessary to pre-treat the oyster shells with a low-concentration organic acid solution, so that the surface will have many corroded micropores, which can be produced during cement bonding The self-locking phenomenon makes it difficult to separate the two-layer oyster shells after being combined. At the same time, the low-strength surface layer is removed to avoid cracking from the hardened layer during use, so as to extend its service life.

3. After the first layer of oyster shell and the second layer of oyster shell are combined, a plurality of heat dissipation gaps will be formed between the two. Using these heat dissipation gaps, the hot air can flow up to take away the heat energy, so that the heat energy is not The heat energy is transferred to the other side of the wall or roof through these oyster shells, which can reduce the heat conduction effect. The two-layer oyster shell plus heat dissipation gap design can further generate heat insulation under the premise of light weight and good weather resistance. And the effect of heat dissipation.

1: The first layer of oyster shell

11: The first hardened layer

111: The first micro-hole

12: The first nacre

2: wall

21: Wall

22: binding agent

23: Heat source

3: The second layer of oyster shell

31: The second hardened layer

311: second microhole

32: The second nacre

4: oyster shell

42: nacre

5: Cement block

6: Cabinet

61: Barbecue Net

62: heat source

63: Temperature measurement point

7: Cabinet

71: Barbecue Net

72: heat source

73: Temperature measurement point

D: heat dissipation gap

[The first figure] is an operation flowchart of an embodiment of the present invention.

[The second figure] is a schematic diagram of the first layer of oyster shells combined on the wall according to the embodiment of the present invention.

[The third figure] is a schematic diagram of the second layer of oyster shells combined with the first layer of oyster shells according to the embodiment of the present invention.

[Fourth figure] is an enlarged schematic diagram of part A in the third figure of the embodiment of the present invention.

[The fifth figure] is the actual photo of the first layer of oyster shell and the second layer of oyster shell bonded by a bonding agent in the embodiment of the present invention.

[Figure 6] is a schematic diagram of a simulation experiment performed with a two-layer oyster shell according to an embodiment of the present invention.

[The seventh figure] is a schematic diagram of a simulation experiment performed with cement blocks in an embodiment of the present invention.

[Table 1] is a statistical table of the temperature change value after heating in the simulation experiment of the present invention.

[Table 2] is a statistical table of the temperature change value after the simulation experiment of the present invention is performed.

Please refer to the first and second figures, the present invention uses oyster shells as the main raw material for constructing the thermal insulation wall. The common oyster shell is formed by the regulation of organic matter through biomineralization, that is, a small amount of organic matter macromolecules are used as the framework, such as proteins, glycoproteins, and polysaccharides. With calcium carbonate as the unit for molecular manipulation, it is composed of a highly ordered multiple micro-layer structure, and its biomineralization formation process is controlled by organic macromolecules. System, the forming material is secreted by the mantle. The basic structure of the oyster shell is divided into three layers: the outer layer is a very thin hardened protein cuticle (hereinafter referred to as the hardened layer); the middle is a calcareous fiber layer, a leaf-like structure and a prismatic layer with natural gas holes; the inner layer is The nacre is mainly composed of minerals such as calcium carbonate and a small amount of organic matter.

The embodiment of the present invention includes the following operation steps:

A. Combine a first nacre layer of a plurality of first layers of oyster shells on a wall facing a heat source, and make a first hardened layer of the first layers of oyster shells face the heat source. In the embodiment of the present invention, since the surface composition of the first layer of oyster shells (1) is a multi-layered leaf-like structure, the first layer of oyster shells (1) can be treated with a low-concentration organic acid solution before being bonded to the wall. 1) Treat the first hardened layer (11) of the first layer of oyster shells (1) to produce many corroded first micropores (111) on the surface after treatment (as shown in the fourth figure) , And remove part of the hardened layer. The low-concentration organic acid solution is citric acid with a concentration of 10% to 20%, and the first layer of oyster shell (1) is treated at a temperature between 25° C. and 60° C. for 20 minutes to 30 minutes. Then the first nacre (12) of the first layer of oyster shells (1) is bonded with a bonding agent (22) to a wall (2) (or roof) facing a wall (21) of a heat source (23) ), and make the first hardened layer (11) of the first layers of oyster shells (1) face the heat source (23). The bonding agent (22) is cement, and the heat source (23) is usually the sun, but it may also be a machine, device or equipment that generates heat. So that the first layers of oyster shells (1) are neatly arranged and combined on the entire wall surface (21).

B. Combine a second hardened layer of a plurality of second layers of oyster shells on the first hardened layer of the first layers of oyster shells, and make a second nacre layer of the second layers of oyster shells face the Heat source. Before combining, the second layer of oyster shells (3) is treated with a low-concentration organic acid solution, so that the surface of the second hardened layer (31) of the second layer of oyster shells (3) will be A lot of second micropores (311) after corrosion are produced (as shown in the fourth figure). The low-concentration organic acid solution is citric acid with a concentration of 10%-20%, and the second layer of oyster shell (3) is treated at a temperature between 25°C and 60°C for 20 minutes to 30 minutes. As shown in the third figure, the second hardened layer (31) of the second layer of oyster shells (3) and the first hardened layer (11) of the first layer of oyster shells (1) The binding effect of the binding agent (22), the binding agent (22) can enter into The first hardened layer (11) and the second hardened layer (31) in the first micropores (111) and the second micropores (311) [as shown in the fourth figure] are bonded by cement The self-locking phenomenon occurs at the time, so that the first layer of oyster shells (1) and the second layer of oyster shells (3) are not easy to separate or fall off after being combined. In addition, the first layer of oyster shells (1) and the second layer of oyster shells (3) are respectively staggered when combined, so that the second hardened layer (31) of any second layer of oyster shells (3) corresponds to It is combined at a position between the two first hardened layers (11) of the two adjacent first layer oyster shells (1). Similarly, the first hardened layer (11) of any first layer of oyster shells (1) corresponds to one of the two second hardened layers (31) of the two adjacent second layer of oyster shells (3). Between the location. Therefore, the thickness of the first layer of oyster shell (1) and the second layer of oyster shell (3) combined on the wall (21) can be reduced, and the first layer of oyster shell (1) can be combined with the A plurality of heat dissipation gaps (D) are formed between the second layer of oyster shells (3), and the heat dissipation gaps (D) can be used to circulate air to further produce a heat dissipation effect.

C. The second nacre can block the heat energy emitted by the heat source and reduce the heat energy from being transferred to the other side of the wall through the second layer of oyster shells and the first layer of oyster shells. In this way, the composition and structure of the oyster shell is similar to the porous ceramic material, and the porous ceramic material has an excellent heat insulation effect. Therefore, in the embodiment of the present invention, the second nacres (32) of the second oyster shells (3) are directed toward the heat source (23), and the second nacres (32) have anti-radiation effect through the second nacres (32). It can block the heat energy emitted by the heat source (23), and reduce the heat energy from being transmitted to the other side of the wall (21) and its room through the second layer of oyster shells (3) and the first layer of oyster shells (1), In this way, the best thermal insulation effect can be provided.

Please refer to the fifth figure, which is an actual photo of the bonding agent (22) between the first layer of oyster shell (1) and the second layer of oyster shell (3) in the embodiment of the present invention . It can be clearly seen in the photo that the second hardened layer (31) of the second layer of oyster shell (3) is between the first hardened layer (11) of the first layer of oyster shell (1), and the The bonding agent (22) adheres and is not easy to separate or fall off after bonding. As shown in the third figure, the second nacre (32) of the second layer of oyster shell (3) can be used to face the heat source, so as to block the heat energy emitted by the heat source (23) and reduce the heat energy permeation The second layer of oyster shells (3) and the first layer of oyster shells (1) are transferred to the other side of the wall surface (21), so as to provide the best thermal insulation effect.

The embodiment of the present invention can also repeat the above steps A and B, and the second nacre (32) of the second layer of oyster shell (3) is sequentially combined with a third layer or more of oyster shells, thereby strengthening The effects of heat insulation and heat dissipation are one of the ways in which the present invention can be implemented.

The present invention also uses two-layer oyster shells to conduct heat dissipation experiments. As shown in the sixth figure, firstly, the two-layer oyster shells (4) required for the experiment are respectively immersed in the oyster shells (4) with a citric acid solution with a concentration of 15%. Clean up and heat to 60°C for 20 minutes to remove impurities and peculiar smell on the oyster shell (4). Then the hardened layer between the two layers of oyster shells (4) is bonded by a bonding agent. The combined thickness of the two layers of oyster shells (4) is 2.1cm, so as to simulate the combination of two layers of oyster shells on the wall The way. In addition, a cement block (5) with a thickness of 2.1cm was used as a control group for the experiment (as shown in the seventh figure), and the cement block (5) was used to simulate the appearance of a simple wall without any insulation facilities. .

The experimental environment is that the two-layer oyster shell (4) is placed on a barbecue net (61) in the box (6) (as shown in the sixth figure), and the nacre (42) of the lower oyster shell (4) ) Facing down, place an infrared heating lamp under the barbecue net (61) as a heat source (62), and make the heat source (62) align with the nacre (42) of the lower oyster shell (4), and a distance apart After ten minutes from the start of the irradiation, the heat source (62) is removed for another ten minutes to dissipate heat. In addition, the nacre (42) located on the upper oyster shell (4) is facing upwards as the temperature measuring point (63), and the temperature change value of the temperature measuring point (63) is detected for heating and cooling, as shown in Table 1 and Table below Two shown.

In addition, the cement block (5) of the control group was also placed on a barbecue net (71) in a box (7) (as shown in the seventh figure), and an infrared heater was placed under the barbecue net (71) The lamp acts as a heat source (72), makes the heat source (72) align with the cement block (5), and starts to irradiate at a distance for ten minutes, and then remove the heat source (72) to dissipate heat for ten minutes. In addition, the upper part of the cement block (5) is used as a temperature measurement point (73), and the temperature change values of the temperature measurement point (73) for heating and cooling are detected, as shown in Table 1 and Table 2 below.

The data in Table 1 above represents the temperature rise change values of the second-layer oyster shell (4) and cement block (5) respectively heated to 10 minutes. Therefore, it can be clearly seen that the thermal insulation effect of the two-layer oyster shell (4) is significantly better than that of the simple cement block (5), which is sufficient to prove that the present invention can indeed achieve the effect of insulating walls and indoors.

The data in Table 2 above represents the temperature drop within 10 minutes after the second-layer oyster shell (4) and cement block (5) are removed from the heat source. Therefore, it can be clearly seen that the heat dissipation effect of the two-layer oyster shell (4) is significantly better than that of the simple cement block (5), which is sufficient to prove that the present invention can indeed achieve the effect of quickly dissipating heat from the wall and the room.

Based on the description of the above embodiments, when one can fully understand the operation and use of the present invention and the effects of the present invention, but the above embodiments are only the preferred embodiments of the present invention, and the implementation of the present invention cannot be limited by this. The scope, 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, are all within the scope of the present invention.

Claims (7)

A method for constructing an insulated wall surface with oyster shells includes: combining a first nacre layer of a plurality of first layers of oyster shells on a wall facing a heat source, and making one of the first layers of oyster shells The first hardened layer faces the heat source; a second hardened layer of a plurality of second layers of oyster shells is bonded to the first hardened layer of the first layers of oyster shells, and one of the second layers of oyster shells The second nacre faces the heat source. The second hardened layers and the first hardened layers are combined with a bonding agent. Before the first layers of oyster shells are combined on the wall, they are preliminarily low-concentration The organic acid solution of the first layer of oyster shells is processed so that the surface of the first hardened layer of the first layer of oyster shells will have a plurality of first micropores, and the bonding agent can enter the first micropores The organic acid solution is citric acid with a concentration of 10% to 20%, and is treated at a temperature of 25°C to 60°C for 20 minutes to 30 minutes. A method for constructing an insulated wall surface with oyster shells includes: combining a first nacre layer of a plurality of first layers of oyster shells on a wall facing a heat source, and making one of the first layers of oyster shells The first hardened layer faces the heat source; a second hardened layer of a plurality of second layers of oyster shells is bonded to the first hardened layer of the first layers of oyster shells, and one of the second layers of oyster shells The second nacre faces the heat source, the second hardened layers and the first hardened layers are combined with a bonding agent, and the second layer of oyster shells are combined before the first layer of oyster shells. The second layers of oyster shells are treated in advance with a low-concentration organic acid solution, so that the second hardened layer of the second layers of oyster shells will have a plurality of second micropores, and the bonding agent can enter the first layers. In the two micropores, the organic acid solution is citric acid with a concentration of 10%-20%, and is treated at a temperature of 25°C to 60°C for 20 minutes to 30 minutes. For example, the method for constructing an insulated wall surface with an oyster shell according to claim 1 or 2, wherein the bonding agent is cement. For example, the method for constructing an insulated wall surface with oyster shells in claim 1 or 2, wherein the first layer of oyster shells and the second layer of oyster shells are respectively combined in a staggered manner. For example, the method for constructing an insulated wall surface by using oyster shells in claim 4, wherein the second hardened layer of any second layer of oyster shells corresponds to the two adjacent ones of the first layer of oyster shells. At the position between the first hardened layers, the first hardened layer of any first layer of oyster shells corresponds to the one that is bonded between the two second hardened layers of any two adjacent or more of the second layer of oyster shells Location. For example, the method for constructing an insulated wall surface with oyster shells in claim 1 or 2, wherein a plurality of heat dissipation gaps are formed between the first layer of oyster shells and the second layer of oyster shells. For example, the method for constructing an insulated wall surface with oyster shells in claim 1 or 2, wherein the second nacre can block the heat energy emitted by the heat source, and reduce the heat energy from passing through the second oyster shells and the The first layer of oyster shell is transferred to the other side of the wall.

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