CN1554613A - A self-regulating building wall plastering mortar material and preparation method thereof - Google Patents

Abstract

The invention discloses a self-temperature-regulating building wall plastering mortar material and a preparation method thereof, belonging to the field of new energy-saving building materials. The purpose of the invention is to provide a self-regulating building wall plastering mortar material with no leakage, no frosting and stable performance and a preparation method thereof. The technical solution is: a self-temperature-regulating building wall plastering mortar material, characterized in that: the mortar material contains the following ingredients in weight percentages: phase change composite material 5-15%; building sand 20-50%, gelled 30-50% of materials, 1-5% of antibacterial and anti-mildew additives, and the balance is water. The preparation method is as follows: firstly mix the above construction sand, cementitious material, antibacterial and antifungal additives, and water as the balance, then add the phase change composite material, mix evenly and directly use it on the construction wall; the production method is simple , saves time and effort, and the fluctuation range of room temperature is reduced by 4-6°C, and the use time of air conditioners is reduced by more than 2 hours/day. The cost is low, and it is easy to promote and implement.

Description

A self-regulating building wall plastering mortar material and preparation method thereof

technical field

The invention relates to a building wall plastering mortar material, in particular to a self-adjusting temperature building wall plastering mortar material and a preparation method thereof, belonging to the technical field of new energy-saving building material additives.

Background technique

The building wall plastering mortar material with self-regulating temperature function is a new type of building material. The working principle of its self-adjusting temperature is as follows: when the ambient temperature is higher than the phase transition point of the material, the phase change material added to the building material absorbs heat from the environment and undergoes a phase transition, reducing the indoor temperature; when the ambient temperature is lower than the phase transition point of the material At the point of change, the phase change material added to the building material undergoes a phase change and releases heat, which increases the indoor temperature. This material has the characteristics of automatically adjusting the indoor temperature of the building according to the change of the ambient temperature and improving the indoor comfort. Therefore, the use of self-adjusting building materials can reduce the use time of air conditioners and heating, reduce the number of times the air conditioners are turned on, and help them avoid peak power consumption and shift the power consumption time, so as to achieve the purpose of energy saving and consumption reduction.

At present, the existing self-regulating building materials mainly include self-regulating gypsum board, self-regulating ceiling, self-regulating cement board and self-regulating concrete board, etc. The manufacturing methods of these boards mainly use the direct mixing method or the infiltration method Processing, that is, in the process of mortar preparation, a phase-change working fluid material is directly mixed into it; or the formed plate is directly immersed in the phase-change working fluid material to obtain a building material with a phase-change self-regulating temperature function. During the use of the building materials prepared by the above method, the performance of the phase change working substance material is unstable, and phenomena such as oozing and frosting are prone to occur, which seriously affects the realization of its temperature adjustment function and hinders its normal use, and does not have antibacterial properties. Anti-mildew function.

Contents of the invention

In order to solve the defects of the existing self-regulating building materials in use, the purpose of the present invention is to provide a self-regulating building wall plastering mortar material that can be directly constructed on the building surface and has the functions of antibacterial, mildew proof, energy saving and consumption reducing .

In order to achieve the above object, the present invention adopts the following technical solutions: a self-regulating building wall plastering mortar material, which is basically composed of the following ingredients in weight percentage: phase change composite material 5-15%; building sand 20-50% %, 30-50% of gelling material, 1-5% of antibacterial and anti-mildew additive, and the balance is water.

The above-mentioned phase-change composite material is a phase-change self-regulating unit particle composed of 40-70% by weight of a phase-change working fluid material and 60-30% of a mineral material. The average particle size of the particles is 1-50 microns, wherein The modified material is at least one of dodecyl alcohol or myristyl alcohol; the mineral material is at least one of sepiolite, palygorskite or attapulgite.

The above-mentioned phase change composite material can also be a microcapsule composed of a capsule core accounting for 40-70% by weight and a capsule wall accounting for 60-30%. The average particle diameter of the microcapsule is 0.1-20 microns. The core is a phase-change working substance, and the capsule wall is an amino resin; wherein the phase-change working substance is at least one of n-hexadecane, n-octadecane or n-eicosane; the amino resin is melamine-formaldehyde resin .

The average particle size of the above-mentioned construction sand is less than 1.5mm; the cementitious material is any one or a mixture of two of ordinary cement and quicklime powder; Any one of the antibacterial agent and the rare earth activated inorganic antibacterial agent; wherein the rare earth activated inorganic antibacterial agent is preferred.

In order to achieve the above object, the present invention also provides a preparation method of a self-regulating building wall plastering mortar material, the steps are: first mix 20-50% of building sand, 30-50% of cementitious material, 1- 5% of antibacterial and antifungal additives, the balance is water, after fully mixing, then add 5-15% of phase change composite material, fully stir, mix evenly, and use directly.

The phase-change composite material used in the present invention includes a phase-change self-temperature-regulating unit composition, a microcapsule-coated phase-change material, a method for detecting the stability of a phase-change temperature-regulating composite material, and a method and device for continuously measuring the life of a phase-change material All of them have been disclosed in the invention patent application previously applied by the inventor, and the patent title and patent application number are respectively: phase change self-regulating temperature unit composition and its preparation method and use 03129763.3; a microcapsule-coated phase change material 03130587.3 for its preparation method; 03129762.5 for the stability testing method of phase-change temperature-regulating composite materials; 03129761.7 for the method and device for continuously measuring the life of phase-change materials; the phase-change self-temperature-regulating unit particles, microcapsules and their preparation methods have been introduced in detail , which will not be repeated here.

The present invention has adopted above technical scheme, and it has beneficial effect as follows:

1. Phase-change composite materials are used as the basic components for energy storage and release, and are mixed with construction sand, cementitious materials, antibacterial and anti-mildew additives, and water to make self-adjusting functional building wall plastering mortar materials , the mortar can be directly constructed on the building surface, and has strong adaptability to the environment. After using the self-regulating function of building wall plastering mortar material on the inner surface of the traditional building wall, the phase change working medium material has no leakage and frosting, and the indoor temperature fluctuation range is reduced, which is comparable to that coated with existing materials. On the wall, the indoor temperature fluctuation range is reduced by 2-6°C, especially when the indoor and outdoor temperature difference is large in summer or winter, the indoor temperature fluctuation range is reduced, which can reduce the opening time of the air conditioner, and achieve the purpose of building energy saving and living comfort.

2. any one of silver zeolite antibacterial agent, copper zeolite antibacterial agent, zinc zeolite antibacterial agent or rare earth activated inorganic antibacterial agent has been added in the raw material formula of the present invention as an antibacterial and mildew-proof additive, wherein preferred rare earth activated inorganic antibacterial agent, will It is added to the present invention, after the construction of the inner surface of the traditional building wall, the wall surface has an antibacterial and anti-mildew function. Cross-infection, improve the health and safety of the building.

3. The invention has the advantages of simple production process, low cost, large dosage and easy popularization, meets the requirements of environment-friendly green building materials, and has obvious development advantages in self-regulating building wall plastering mortar materials.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the wall after the present invention is applied to the wall surface

Fig. 2 is the scanning electron micrograph of phase-change composite material microcapsule used in the present invention

Fig. 3 is the scanning electron micrograph of phase change self-regulating unit particle used in the present invention

Detailed ways

Below in conjunction with accompanying drawing and embodiment the technical scheme of the present invention is described in detail:

As shown in Figure 1, it has shown the sectional structure of the wall body material after the self-regulating building wall plastering mortar material of the present invention is applied to the wall surface, including functional interior wall architectural coating 1; Wall plastering mortar material 2; wall main body 3; exterior wall plastering material 4; exterior wall architectural paint 5; interior wall plastering mortar material with self-regulating function Sexual interior wall paint1.

The interior wall plastering mortar material 2 with self-regulating function is basically composed of the following ingredients in weight percentage: phase change composite material 5-15%, construction sand 20-50%, cementitious material 30-50%, antibacterial and antibacterial Mold additive 1-5%, the balance is water.

The above-mentioned phase-change composite material is a phase-change self-temperature-regulating unit particle composed of a phase-change working fluid material and a mineral material, and the average particle diameter of the particles is 1 to 50 microns; the weight percentage of the phase-change working medium material and the mineral material is For example, it is 40-70:30-60; the phase change working fluid material is at least one of dodecyl alcohol or myristyl alcohol; the mineral material is at least one of sepiolite, palygorskite or attapulgite.

The above-mentioned phase-change composite material can also be selected from microcapsules composed of a capsule core accounting for 40-70% by weight and a capsule wall accounting for 60-30% by weight. The average particle diameter of the microcapsules is 0.1-20 microns; The core material is phase-change working material; the capsule wall material is amino resin; the phase-change working material is at least one of n-hexadecane, n-octadecane or n-eicosane; the amino resin is melamine-formaldehyde resin.

The phase change temperature of the phase change working fluid material used in the present invention is required to be between 16°C and 28°C.

In addition, in the self-regulating building wall plastering mortar material of the present invention, it is also required that the average particle size of the building sand is less than 1.5mm; Any one of silver zeolite antibacterial agent, copper zeolite antibacterial agent, zinc zeolite antibacterial agent and rare earth activated inorganic antibacterial agent can be selected, the most preferred rare earth activated inorganic antibacterial agent.

The preparation method of the above self-regulating building wall plastering mortar material, the steps are: first add 20% to 50% of building sand, 30% to 50% of cementitious material, 1% to 5% of antibacterial and antimildew additives, and the balance is sufficient water After mixing, add 5% to 15% of phase change composite material and stir thoroughly. After mixing evenly, it can be directly coated on the wall.

As shown in Figure 2, the scanning electron micrograph of microcapsules composed of 50% octadecane capsule core and 50% melamine-formaldehyde resin capsule wall by weight ratio, the phase transition temperature of its phase change working fluid material is 23.15 ° C .

As shown in Figure 3, it is a scanning electron micrograph of a phase change self-regulating unit particle composed of 60% dodecyl alcohol and 40% sepiolite by weight, and the phase change temperature of the phase change working medium material is 24.0°C .

According to the proportioning and method of above-mentioned accompanying drawing and material, its specific embodiment is as follows:

Example 1

Put 40Kg of construction sand, 40kg of ordinary cement, 5Kg of rare earth-activated inorganic antibacterial agent, and 18Kg of water into the concrete mixer and mix them thoroughly, then add 15kg of phase change composite materials; mix them thoroughly for 2 minutes, and use them directly after mixing evenly.

Wherein the phase-change composite material is composed of microcapsules containing phase-change working fluid materials, wherein the phase-change working fluid materials are composed of microcapsules containing 50% octadecane capsule core and 50% melamine-formaldehyde resin capsule wall; The morphology of the composite material is shown in the scanning electron micrograph in Fig. 2.

The mortar is used in building construction and has a good self-regulating function. After testing, the wall mortar plastering material added with phase-change working fluid materials will not produce macroscopic exudation and hoarfrost within 30 years of use; The fluctuation range of the indoor temperature can be reduced by 4-6°C. When the indoor and outdoor temperature difference is large, the indoor temperature can still be kept without large fluctuations. The start-up time of the air conditioner can be reduced by more than 2 hours a day; the surface of the wall is coated The mortar plastering material of the present invention, wherein the inorganic antibacterial agent has a long-acting antibacterial and antifungal effect, can kill bacteria adsorbed to the wall, has an antifungal effect, and avoids bacterial cross-infection; in the humid climate of the rainy season, the wall The body plastering mortar material will not produce mold or mildew spots within 20 years. Compared with the phenomenon that mold or mildew spots will occur after 3 years in the prior art mortar plastering materials, it effectively improves the sanitary safety of the building and meets the requirements of green building materials. , to achieve the goals of living comfort and building energy efficiency.

Example 2

Put 50Kg of cement, 35kg of construction sand, 5Kg of silver zeolite inorganic antibacterial agent, and 25Kg of water into the concrete mixer and mix thoroughly, then add 10Kg of phase-change self-regulating composite material, and stir for 2 minutes to make self-regulating functional building cement mortar . The phase-change composite material used therein is a microcapsule with 50% octadecane capsule core and 50% melamine-formaldehyde resin capsule wall added by weight percentage. The morphology of the microcapsule is shown in the scanning electron microscope photo of FIG. 2 .

Its technical effect is the same as embodiment one.

Example 3

Mix 40Kg of quicklime powder, 54kg of construction sand, 1Kg of rare earth-activated inorganic antibacterial agent, and 20Kg of water, then put them directly into a concrete mixer and mix thoroughly, then add 5Kg of phase-change self-temperature-regulating unit particles, and stir for 2 minutes to make a self-contained product. Temperature-regulating functional building mortar. Wherein the phase-change self-regulating unit particles contain 60% by weight of dodecyl alcohol and 40% by weight of sepiolite, and the morphology of the phase-change self-regulating unit particles is shown in the scanning electron microscope photo in Figure 3 , wherein the phase change temperature of the phase change working fluid material is 24.0°C.

Its technical effect is the same as embodiment one.

Example 4

Mix 20kg of quicklime powder, 20Kg of cement, 46Kg of construction sand, 4Kg of rare earth-activated inorganic antibacterial agent, and 20Kg of water, and then put them directly into a concrete mixer and mix thoroughly, then add 10kg of phase-change self-regulating unit particles, and stir for 2 minutes to produce Self-regulating functional building mortar. Among them, the phase-change self-regulating unit particles are composed of 60% dodecyl alcohol and 40% sepiolite by weight; the phase-change temperature of the phase-change working medium material is 24.0°C; the morphology of the phase-change self-regulating unit particles As shown in the scanning electron micrograph of Fig. 3 .

Its technical effect is the same as embodiment one.

Example 5

After mixing 30kg quicklime powder, 54Kg construction sand, 3Kg rare earth activated inorganic antibacterial agent and 17Kg water, put them directly into the concrete mixer and mix them thoroughly, then add 13Kg phase-change self-temperature-regulating composite material, and after stirring for 2 minutes, it can be made into a Construction mortar with self-regulating function. Wherein, the phase-change self-temperature-regulating composite material is composed of 60% by weight of dodecyl alcohol and 40% by weight of sepiolite; wherein, the phase-change temperature of the phase-change working medium material is 24.0°C. The morphology of the phase-change self-temperature-regulating unit particles is shown in the scanning electron microscope photo in FIG. 3 .

Its technical effect is the same as embodiment one.

Example 6

After mixing 32Kg of quicklime powder, 58kg of construction sand, 3Kg of rare earth activated inorganic antibacterial agent and 17Kg of water, they are directly put into the concrete mixer and mixed thoroughly, then 7kg of phase-change self-regulating composite material is added, and after stirring for 2 minutes, the self- Temperature-regulating functional building cement mortar. The phase-change self-temperature-regulating composite material is composed of 60% dodecyl alcohol and 40% sepiolite by weight, and the phase-change temperature of the phase-change working medium material is 24.0°C. The morphology of the phase-change self-temperature-regulating unit particles is shown in the scanning electron microscope photo in FIG. 3 .

Its technical effect is the same as embodiment one.

Claims (9)

1. A self-regulating building wall plastering mortar material, which is basically composed of the following ingredients in percentage by weight: phase change composite material 5-15%; building sand 20-50%, cementitious material 30-50%, 1-5% of antibacterial and antifungal additives, and the balance is water. 2. The self-regulating building wall plastering mortar material as claimed in claim 1, characterized in that: the phase change composite material is composed of 40-70% by weight phase-change working fluid material and 60-30% mineral material The phase-change self-temperature-regulating unit particle has an average particle diameter of 1-50 microns. 3. The self-regulating building wall plastering mortar material as claimed in claim 2, characterized in that: the phase change working medium material is at least one of lauryl alcohol or myristyl alcohol; the mineral material is sepiolite , palygorskite or attapulgite at least one. 4. The self-regulating building wall plastering mortar material as claimed in claim 1, characterized in that: the phase change composite material is composed of a capsule core accounting for 40-70% by weight and a capsule wall accounting for 60-30%. Microcapsules, the average particle diameter of the microcapsules is 0.1-20 microns. 5 . The self-temperature-regulating building wall plastering mortar material as claimed in claim 4 , wherein the capsule core is a phase-change working fluid material, and the capsule wall is amino resin. 6. The self-temperature-regulating building wall plastering mortar material as claimed in claim 5, characterized in that: the phase change working medium material is at least one of n-hexadecane, n-octadecane or n-eicosane; The amino resin is melamine-formaldehyde resin. 7. self-regulating building wall plastering mortar material as claimed in claim 1, is characterized in that: the average particle diameter of described building sand is less than 1.5mm; Described cementitious material is any one in ordinary cement, quicklime powder or The two kinds are mixed; the antibacterial and antimildew additive is any one of silver zeolite antibacterial agent, copper zeolite antibacterial agent, zinc zeolite antibacterial agent and rare earth activated inorganic antibacterial agent. 8. The self-temperature-regulating building wall plastering mortar material according to claim 1 or 7, characterized in that: the antibacterial and antifungal additive is a rare earth-activated inorganic antibacterial agent. 9. A preparation method of the self-regulating building wall plastering mortar material according to any one of claims 1-8, characterized in that: first mix 20-50% of building sand, 30-50% of cementitious material , 1-5% antibacterial and anti-mildew additives, the balance is water. After fully mixing, then add 5-15% phase-change composite materials and fully stir, mix evenly and use directly.

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