An OSB-based electrothermal geothermal floor capable of releasing negative oxygen ions

Abstract

The OSB-based electric heating geothermal floor capable of releasing negative oxygen ions. The OSB-based electric heating geothermal floor has a surface layer and a core layer. There is paint on the surface layer, and a backboard is added after coating the bottom layer; the core layer particleboard adopts a three-layer composite floor structure, and the core layer is a spliced board. The bottom layer coating is composed of: 2-5% tourmaline powder, 15-25% flour, 25-35% talcum powder, 8-12% white latex, 1-3% cellulose, 15-25% anhydrous copper sulfate powder, and water; anhydrous copper sulfate is added to the bottom layer coating, which plays a good protective role for the electric heating device; a large amount of inorganic materials are used in the bottom layer coating, which has a good absorption and blocking effect on the radiation generated by the electric heating geothermal, and the electric heating floor has a high flame retardancy efficiency. And the tourmaline powder attached to the subsurface of the floor during use is heated to the optimal working state as the electric heating geothermal floor is used, thereby stimulating negative oxygen ions to achieve the effect of purifying the air and removing formaldehyde.

Description

Technical Field

[0001] The present invention relates to the technical field of electrothermal geothermal floors, and particularly to an OSB-based electrothermal geothermal floor capable of releasing negative oxygen ions. Background Art

[0002] Indoor environmental problems are important issues that people have been concerned about. At present, various indoor material fields such as furniture and floors are developing towards formaldehyde-free and functionalization. The market share of geothermal floors has been increasing year by year;

[0003] Oriented strand board (OSB) is usually made from small-diameter log raw materials, processed into thin and long strand chips by a special chipper, dried, sorted, and mixed with glue, and then oriented paving is achieved by means of a special device, and then hot-pressed into a structural board; due to the good physical and mechanical properties of OSB, its characteristics of high material strength and good stability, so it is a good choice for the substrate of reinforced wood floors and is often applied to structural materials. Wood floors with OSB as the substrate greatly facilitate their installation and processing operations. In recent years, with the gradual recognition of the market, more and more furniture materials are also using OSB as the substrate because the adhesives used in OSB usually use isocyanates and the product itself has no formaldehyde release;

[0004] The essence of negative oxygen ions is an ion with a negative charge formed by an oxygen molecule obtaining an electron, so it is called negative oxygen ion. The function of negative oxygen ions to purify the air and remove formaldehyde has been widely confirmed;

[0005] The existing solutions for generating negative oxygen ions usually directly add tourmaline powder to the adhesive. The adhesives currently used for floor substrates are still mainly urea-formaldehyde resins. Due to being coated by the adhesive, the efficiency of generating negative oxygen ions is low, and the low concentration of negative oxygen ions cannot well achieve the functions of purifying the air and removing formaldehyde. Moreover, tourmaline powder usually needs to be under the condition of 42 °C to generate negative oxygen ions, and the directly added tourmaline powder cannot directly activate the function of tourmaline to generate negative oxygen ions;

[0006] The geothermal system uses the entire ground as a radiator, and the heat medium in the floor interlayer transmits heat from bottom to top. Using the heat transfer principle, the indoor temperature is maintained within a comfortable and pleasant range, and it can achieve warm feet and cool head; according to the different heat mediums, geothermal is divided into two types: hydrothermal geothermal and electrothermal geothermal;

[0007] Electric heating geothermal uses heating cables as the heat source, with a fast heating speed and a faster indoor temperature rise compared to water floor heating; the wiring is more convenient and does not require additional floor height; electric heating geothermal does not need to be cleaned and maintained later, which is relatively more convenient. Moreover, the electric heating geothermal has a high heat conversion rate, which can reduce energy loss during the conversion process. With an intelligent temperature control system, it can achieve on-demand heating, metered charging, and can adjust the heating time by itself.

[0008] However, electric heating geothermal will generate slight radiation during operation; the existing electric heating floors generally use traditional three-layer solid wood composite floors or solid wood boards. The existing technologies are all simple wood geothermal floors, which cannot absorb or block radiation. And when there is a failure in electric heating geothermal, such as damage to the electric heating temperature sensor, the temperature under the floor may rise abnormally. Due to poor flame retardant effect, serious safety hazards are extremely likely to occur during the use of electric heating geothermal.

[0009] When electric heating geothermal is in use, when it is turned on and off, the temperature difference that the geothermal floor bears is relatively large, and it is easy to get damp under the geothermal floor, causing water vapor to accumulate under the floor, thus damaging the electric heating device under the electric heating floor; moreover, the geothermal floors adopted in the existing technologies will release formaldehyde in the initial stage of use, and the existing geothermal floors themselves are formaldehyde sources; and they cannot generate negative oxygen ions.

[0010] Therefore, those skilled in the art are committed to developing an OSB-based electric heating geothermal floor that can release negative oxygen ions, aiming to solve the defect problems existing in the prior art. Summary of the Invention

[0011] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that in the current prior art, for electric heating geothermal floors, the efficiency of generating negative oxygen ions is relatively low, and it cannot well achieve the function of purifying air and removing formaldehyde through negative oxygen ions. Moreover, the electric heating geothermal floors of the existing technologies cannot block or absorb the slight radiation generated by the heating cables. And the electric heating geothermal floors of the existing technologies have a poor flame retardant efficiency and cannot prevent the danger that may be caused by local overheating due to local damage of the electric heating. And the water absorption performance is relatively poor, which is easy to cause moisture prevention under the electric heating floor, thus damaging the electric heating device under the electric heating floor; and it will release formaldehyde in the initial stage of use, cannot generate negative oxygen ions, and the use experience is poor.

[0012] To achieve the above object, the present invention provides an OSB-based electric heating geothermal floor that can release negative oxygen ions, and the technical solution adopted by the present invention is as follows:

[0013] The OSB-based electric heating geothermal floor has a surface layer, a core layer, surface paint, and a backboard is added after the bottom layer is coated.

[0014] The core layer particleboard adopts a three-layer composite floor structure, with the core layer being a spliced board. Using the gaps between the OSB spliced boards and the unevenness on the surface layer, paint is filled;

[0015] In the said paint, the bottom layer paint is: tourmaline powder 2 - 5%, flour 15 - 25%, talcum powder 25 - 35%, white latex 8 - 12%, 1 - 3% cellulose, 15 - 25% anhydrous copper sulfate powder, water;

[0016] The addition of the said bottom layer paint can level the surface of the OSB, so that the tourmaline powder that can release negative oxygen ions can adhere to the sub-surface layer of the floor;

[0017] Furthermore, in the said bottom layer paint, the use of flour can improve the bonding ability between the surface of the painted OSB and the backboard;

[0018] Furthermore, in the said bottom layer paint, anhydrous copper sulfate powder can improve the absorption of external moisture to protect the electric heating device;

[0019] Furthermore, the talcum powder in the said bottom layer paint is preferably putty powder. There are a large number of fillers in the putty powder, which can provide a large number of channels for the tourmaline powder to contact the air, thus making it easier to stimulate negative oxygen ions;

[0020] Furthermore, for the said OSB-based hydrothermal geothermal floor, when processing the OSB, putty powder is applied to both the front and back surfaces of the OSB. Utilizing the rough characteristics of the OSB surface, more functional putty powder can adhere to the surface of the substrate. After the functional putty powder dries and cures, it is sanded, and after sanding, a panel and a backboard are bonded with a formaldehyde-free adhesive such as polyurethane or soy protein;

[0021] Furthermore, for the said OSB-based electric geothermal floor, the bottom layer paint contains a large amount of inorganic materials. The inorganic materials can block and absorb part of the radiation, and the heating of the inorganic materials can improve the flame retardancy efficiency of the floor, preventing the danger that may be caused by local overheating due to local damage of the electric geothermal;

[0022] Adopting the above scheme, the OSB-based electric geothermal floor capable of releasing negative oxygen ions disclosed by the present invention has the following advantages:

[0023] (1) For the OSB-based electric geothermal floor capable of releasing negative oxygen ions of the present invention, anhydrous copper sulfate is added to the bottom layer paint. Anhydrous copper sulfate has excellent water absorption performance and turns into copper sulfate after absorbing water. During the use of the electric geothermal, the copper sulfate will lose water and turn back into anhydrous copper sulfate, so that the electric heating device under the geothermal floor will not be threatened by condensed water, playing a good protective role for the electric heating device;

[0024] (2) The OSB-based electrothermal geothermal floor capable of releasing negative oxygen ions of the present invention uses a large amount of inorganic materials in the bottom coating, which has a good absorption and blocking effect on the radiation generated by electrothermal geothermal, and because of the use of inorganic materials in the coating, the electrothermal floor has a high flame retardancy efficiency.

[0025] (3) The OSB-based electrothermal geothermal floor capable of releasing negative oxygen ions of the present invention, due to the selection of the bottom coating, can use formaldehyde-free adhesives for bonding the face panel and the back panel, and no formaldehyde will be generated during the whole process of use. And the tourmaline powder attached to the subsurface of the floor during use, with the use of the electrothermal geothermal floor, is heated to the optimal working state, thereby stimulating negative oxygen ions to achieve the effects of purifying the air and removing formaldehyde.

[0026] In summary, for the OSB-based electrothermal geothermal floor capable of releasing negative oxygen ions disclosed by the present invention, copper sulfate anhydrous is added to the bottom coating, which plays a good protective role for the electrothermal heating device; a large amount of inorganic materials are used in the bottom coating, which has a good absorption and blocking effect on the radiation generated by electrothermal geothermal, and the electrothermal floor has a high flame retardancy efficiency. And the tourmaline powder attached to the subsurface of the floor during use, with the use of the electrothermal geothermal floor, is heated to the optimal working state, thereby stimulating negative oxygen ions to achieve the effects of purifying the air and removing formaldehyde.

[0027] The following will further illustrate the concept, specific technical solutions and technical effects generated by the present invention in conjunction with specific embodiments to fully understand the purpose, features and effects of the present invention. Specific Embodiments

[0028] The following introduces multiple preferred embodiments of the present invention to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and these embodiments are exemplary descriptions, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0029] Example 1: Using the OSB-based electrothermal geothermal floor capable of releasing negative oxygen ions of the present invention

[0030] For the OSB-based electrothermal geothermal floor, its structure includes a surface layer, a core layer, surface paint, and a back panel is added after the bottom coating;

[0031] The core layer particleboard adopts a three-layer composite floor structure, the core layer is a spliced board, and the gaps between the OSB spliced boards and the unevenness of the surface layer are used to fill the coating;

[0032] In the coating, the bottom coating is: 3% tourmaline powder, 20% flour, 30% talcum powder, 10% white latex, 1.5% cellulose, 20% copper sulfate anhydrous powder, and water;

[0033] The addition of the bottom coating can fill the surface of the OSB, enabling the tourmaline powder that can release negative oxygen ions to adhere to the subsurface of the floor.

[0034] In the bottom coating, the use of flour can enhance the bonding ability between the surface of the coated OSB and the backboard.

[0035] In the bottom coating, anhydrous copper sulfate powder can improve the absorption of external moisture to protect the electric heating device.

[0036] The talcum powder in the bottom coating is preferably putty powder. There are a large number of fillers in the putty powder, which can provide a large number of channels for the tourmaline powder to contact the air. The tourmaline powder can be heated to about 40 °C with the use of the geothermal floor, thus stimulating negative oxygen ions.

[0037] For the OSB-based hydrothermal geothermal floor, when processing the OSB, putty powder is applied to both the front and back surfaces of the OSB. Utilizing the rough surface characteristics of the OSB, more functional putty powder can adhere to the surface of the substrate. After the functional putty powder dries and cures, it is sanded, and then the panel and the backboard are bonded with a formaldehyde-free adhesive such as polyurethane or soy protein.

[0038] For the OSB-based electric geothermal floor, the bottom coating contains a large amount of inorganic materials. The inorganic materials can block and absorb part of the radiation, and the heating of the inorganic materials can improve the flame retardancy efficiency of the floor, preventing potential dangers caused by local overheating due to local damage of the electric geothermal.

[0039] After manufacturing the OSB-based electric geothermal floor capable of releasing negative oxygen ions of the present invention, relevant tests on the oxygen index, flame retardancy, formaldehyde release amount, and negative oxygen ion concentration of the OSB-based electric geothermal floor of Example 1 are then carried out.

[0040] The oxygen index measures the flame retardant characteristics of the geothermal floor. Flame retardancy refers to the ability of a certain substance to prevent other substances from burning, and the oxygen index is to place a material of a certain size in a test device, under specified conditions, introduce a mixed gas of oxygen and nitrogen, ignite the placed material with a lighter, and measure the lowest oxygen concentration required to maintain continuous burning like a wax. In the specific implementation of Example 1, the geothermal floor with a size of 50 mm × 50 mm is selected. Finally, the test result of the floor in Example 1 shows that the lowest oxygen concentration for maintaining continuous burning is 35% expressed as a percentage; that is, the oxygen concentration needs to reach 35% to maintain continuous burning like a wax.

[0041] The flame retardancy is a property of the material itself. The test is carried out by igniting the material in a combustion chamber for 30 s. After 60 s from the end of ignition, the maximum height that the flame can reach is measured, with the unit of mm. When conducting the flame retardancy test, it is necessary to ensure that the air flow rate in the flue of the combustion chamber meets the requirements. In this Example 1, the ignition method is unified as igniting on the surface of the geothermal floor for 30 s. After the ignition time ends, the burner needs to be withdrawn smoothly. The final test result of the flame retardancy is that there is no measurable-height flame on the geothermal floor 60 s after the end of ignition, that is, it has good flame retardancy.

[0042] The determination method of the formaldehyde release amount is the 1m 3 climate chamber method, and its test principle is: putting the OSB-based electrothermal geothermal floor with a surface area of 1m 2 into a climate chamber with the temperature, relative humidity, air flow rate and air replacement rate controlled at certain values; formaldehyde is released from the OSB-based electrothermal geothermal floor and mixed with the air in the chamber. The air in the chamber is periodically extracted, and the extracted air passes through an absorption bottle filled with distilled water, and all the formaldehyde in the air is dissolved in the water; the amount of formaldehyde in the absorption liquid and the volume of the extracted air are measured, and the amount of formaldehyde per cubic meter of air is calculated, expressed in milligrams per cubic meter (mg / m 3 ); the air extraction is periodic until the mass concentration of formaldehyde in the air in the climate chamber reaches a stable state; the final test result shows that the formaldehyde release amount of this Example 1 is less than 0.02 mg / m 3 ;

[0043] The test of the negative oxygen ion concentration is carried out after the OSB-based electrothermal geothermal floor in Example 1 of the present invention has been working normally for a period of time. Through a negative ion detector model KEC900, it is placed above the electrothermal floor to detect the negative oxygen ion concentration in the air, and the test result will be directly displayed on the display screen of the KEC900 negative ion detector. After 3 measurements, the negative oxygen ion concentration of Example 1 of the present invention is 1523 ions / cm 3 ; which is equivalent to the negative oxygen ion concentration in an urban park, and has a relatively fresh air freshness level.

[0044] Example 2: Using the OSB-based hydrothermal geothermal floor capable of releasing negative oxygen ions of the present invention

[0045] Specifically, in this Example 2, the bottom layer coating is: tourmaline powder 2%, flour 15%, talc powder 25%, white latex 8%, 1.5% cellulose, 15% anhydrous copper sulfate powder, water;

[0046] Except that the component content of the bottom layer coating in Example 2 is different from that in Example 1, the rest are the same as those in Example 1;

[0047] The test results of Example 3 are as follows: Oxygen index: 32%; that is, it has good flame retardancy; the formaldehyde release amount is less than 0.02 mg / m 3 ; the negative oxygen ion concentration is 1207 ions / cm 3 , and it has a relatively fresh air freshness degree.

[0048] Example 3: Use the OSB-based hydrothermal geothermal floor capable of releasing negative oxygen ions of the present invention

[0049] Specifically, the bottom layer coating of this Example 3 is: tourmaline powder 5%, flour 25%, talc powder 35%, white latex 12%, 3% cellulose, 25% anhydrous copper sulfate powder, water;

[0050] Except that the component content of the bottom layer coating of Example 2 is different from that of Example 1, the rest are the same as those of Example 1;

[0051] The test results of Example 3 are as follows: Oxygen index: 38%; that is, it has good flame retardancy; the formaldehyde release amount is less than 0.02 mg / m 3 ; the negative oxygen ion concentration is 1635 ions / cm 3 , and it has a relatively fresh air freshness degree.

[0052] Comparative Example 1: The traditional electric heating three-layer composite splicing floor most commonly used in the prior art is selected in this Comparative Example 1

[0053] Subsequently, the equipment in Example 1 is used to conduct relevant tests on the oxygen index, flame retardancy, formaldehyde release amount and negative oxygen ion concentration of the floor in Comparative Example 2 respectively;

[0054] All settings during the test are the same as those in Example 1 except for the different floor materials; except for the different floor materials, other characteristics such as the floor thickness are the same;

[0055] The test results of Comparative Example 1 are as follows: Oxygen index: 20%; Flame retardancy 34 mm; The formaldehyde release amount is less than 0.07 mg / m 3 ; the negative oxygen ion concentration is 287 ions / cm 3 , and the air freshness is poor.

[0056] Comparative Example 2: The natural solid wood floor selected in this Comparative Example 2 is made of birch, and the thickness is the same as that of the floor in Example 1;

[0057] Subsequently, the equipment in Example 1 is used to conduct relevant tests on the oxygen index, flame retardancy, formaldehyde release amount and negative oxygen ion concentration of the floor in Comparative Example 2 respectively;

[0058] All settings during the test are the same as those in Example 1 except for the different floor materials;

[0059] The test results of Comparative Example 2 are as follows: oxygen index: 18%; flame retardancy: 72 mm; formaldehyde emission is less than 0.01 mg / m 3 ; negative oxygen ion concentration is 304 per cm 3 , and the air freshness is poor.

[0060] Comparative analysis: Generally, it is considered that materials with an oxygen index less than 21 are flammable materials, those with 21 ≤ oxygen index ≤ 27 are slow-burning materials, and those greater than 28 are flame-retardant materials; the oxygen indices of Examples 1, 2, and 3 in this embodiment are all greater than 28, belonging to flame-retardant materials. Among them, as the content of inorganic materials increases, the oxygen index also increases with the increase of inorganic materials, and its flame retardancy index also gradually increases; while as a natural solid wood floor, the oxygen index of Comparative Example 3 made of birch is 18%, belonging to flammable materials, and the oxygen index of the electric heating three-layer composite splicing floor in Comparative Example 1 is 20%, also belonging to flammable materials; and in the flame retardancy test of Examples 1, 2, and 3, after 60 s of ignition end, there is no measurable open flame height, while there are open flames with a certain height in Comparative Examples 1 and 2; it shows that the geothermal floor of the present invention has good heat resistance and flame retardancy performance at the same time;

[0061] In the relevant tests of formaldehyde emission and negative oxygen ion concentration, the performance gaps among Examples 1, 2, and 3 are not obvious. The formaldehyde emissions are far lower than the national mandatory standards, and the release of negative oxygen ion concentration can reach the negative oxygen ion concentration in urban gardens; while the formaldehyde emission in Comparative Example 1 only meets the national mandatory standards, and there is still a certain amount of formaldehyde release, and the birch log used in Comparative Example 2 hardly has formaldehyde volatilization; however, the negative oxygen ion concentrations of both are hardly released, only being the negative oxygen ion concentration in an ordinary environment;

[0062] In summary, in the technical solution of this patent, anhydrous copper sulfate is added to the bottom coating, which plays a good protective role for the electric heating device; a large amount of inorganic materials are used in the bottom coating, which has a good absorption and blocking effect on the radiation generated by electric heating geothermal energy, and the electric heating floor has a high flame retardancy efficiency. And during the use process, the tourmaline powder attached to the subsurface of the floor is heated to the optimal working state as the electric heating geothermal floor is used, thereby exciting negative oxygen ions to achieve the effects of purifying the air and removing formaldehyde.

[0063] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations according to the concept of the present invention without creative labor. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field of the present invention based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. An OSB-based electrothermal geothermal floor capable of releasing negative oxygen ions, characterized in that, The OSB-based electrothermal geothermal floor has a surface layer and a core layer. The surface layer is painted, and a backboard is added after coating the bottom layer; The core layer is a particleboard, adopting a three-layer composite floor structure. The core layer is a spliced board. Using the gaps between the OSB spliced boards and the unevenness of the surface layer, the coating is filled; In the said coating, the bottom coating is: tourmaline powder 2-5%, flour 15-25%, talcum powder 25-35%, white latex 8-12%, cellulose 1-3%, anhydrous copper sulfate powder 15-25%, water; The addition of the said bottom coating makes the surface of the OSB filled, so that the tourmaline powder releasing negative oxygen ions adheres to the subsurface of the floor; In the said bottom coating, the use of flour after finishing increases the bonding ability between the surface of the OSB and the backboard; In the said bottom coating, the anhydrous copper sulfate powder improves the absorption of external moisture to protect the electrothermal heating device; For the OSB-based electrothermal geothermal floor, when processing the OSB, putty powder is applied to the front and back surfaces of the OSB. Utilizing the rough characteristics of the OSB surface, more functional putty powder adheres to the surface of the substrate. After the functional putty powder dries and cures, sanding is carried out. After sanding, the panel and the backboard are bonded with polyurethane or soy protein formaldehyde-free adhesive.

2. The OSB-based electrothermal geothermal floor according to claim 1, characterized in that, The talcum powder in the said bottom coating is putty powder. There are a large number of fillers in the putty powder, providing a large number of channels for the tourmaline powder to contact the air, so that it is easier to generate negative oxygen ions.

3. The OSB-based electrothermal geothermal floor according to claim 1, characterized in that, For the OSB-based electrothermal geothermal floor, the bottom coating contains a large amount of inorganic materials. The inorganic materials block and absorb part of the radiation, and the heating of the inorganic materials improves the flame retardant efficiency of the floor, preventing the danger that may be caused by local overheating due to local damage of the electrothermal geothermal.

4. The OSB-based electric heating geothermal floor according to claim 1, characterized in that, The said bottom coating is: tourmaline powder 2-5%, flour 20%, talcum powder 30%, white latex 10%, cellulose 1.5%, anhydrous copper sulfate powder 20%, water.