CN109734398B - Environment-friendly lime slurry building decoration material and preparation method thereof - Google Patents
Environment-friendly lime slurry building decoration material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses an environment-friendly lime slurry building decoration material and a preparation method thereof, which takes hydrated lime, heavy calcium carbonate, modified cellulose, vegetable oil, animal glue or microbial glue and the like as main raw materials, and prepares a novel decoration material capable of simultaneously replacing the coating of the interior wall and the exterior wall of the traditional building material by pretreating the modified cellulose, the vegetable oil, the animal glue and the like. The method comprises the following specific steps: after the quicklime is cured, adding vegetable oil, modified cellulose and animal glue or microbial glue pre-paste slurry, extruding by a double-screw extruder, and preserving heat at 20-50 ℃ for 20-40 days to obtain the environment-friendly lime slurry building decoration material. The obtained product has good cohesiveness, no crack and smooth brush coating surface. The preparation components do not contain heavy metal and formaldehyde, and the material is a green and environment-friendly building material.
Description
Technical Field
The invention relates to the field of building decoration materials, in particular to an environment-friendly lime slurry building decoration material and a preparation method thereof.
Background
The building materials are ubiquitous in the environment of human life, and the safety and environmental protection performance of the used building materials directly determine the actual environment of human life. Where indoors is the primary place of human activity, more than about 70% of the time human activity spends indoors, and infants and elderly and infirm disabled people spend longer indoors. Indoor air pollution is considered as the third generation pollution starting from the middle of the 20 th century following the industrial revolution soot pollution of the 18 th century (first generation pollution) and the photochemical smoke pollution caused by the petroleum and automobile industries of the 19 th century (second pollution), with formaldehyde pollution coming first. Indoor formaldehyde is mainly derived from building materials, furniture, artificial boards, various adhesive coatings, synthetic textiles, and the like. Low-formaldehyde and even formaldehyde-free decorative building materials are attracting much attention.
The lime is prepared by calcining products with high calcium carbonate content, such as limestone, dolomite, chalk, shells and the like, by taking calcium oxide as a main component at 900-1100 ℃. Lime has been widely used throughout the world as the earliest construction cementitious material used by humans. The massive quicklime is cured by using a proper amount of waterThe obtained powder is called slaked lime, when the water consumption for slaking is large (about 3-4 times of the volume of the quicklime), the slaked water needs to be aged in a lime storage tank for at least two weeks to eliminate the harm of the burnt lime, and the paste obtained by aging and precipitation is lime paste, wherein the main components of the slaked water and the lime paste are Ca (OH)2It can be used as coating material and adhesive for brick and tile. At present, lime is directly used in the aspects of modern lime-plastic and cultural relic restoration, and in the building industry, lime cream is mainly used for indoor rendering with low requirements. Lime paste or slaked lime powder can be used for preparing lime mortar or cement-lime mixed mortar for plastering and building.
However, the use of lime slurry as an architectural coating has disadvantages in that it is not suitable for use alone, other than painting, because of its low setting and hardening speed, low strength, poor water resistance, and large drying shrinkage. In addition, various working conditions such as environmental temperature, humidity, climate change and the like can cause the compact calcium carbonate layer to generate certain cracking phenomenon, thereby directly influencing the appearance of the architectural decorative wall.
The most traditional Chinese process is that 1-7% of salt is added into lime slurry, NaCl is used to improve the water absorption of the slurry, the carbonization process is eased, and the surface smoothness is increased, so that the cracking problem of the surface calcium carbonate layer is reduced.
The traditional tung oil-lime mortar prepared by the ancient method has lower density than lime by using boiled tung oil and is insoluble in water, so that a waterproof layer can be formed on the surface layer, the evaporation control of mortar water is facilitated, the formation of calcium carbonate micro crystals is regulated and controlled, and the mechanical property of a bonding material is improved. The method is widely used for ancient graves, water conservancy and urban wall engineering, the advantages of high strength, permeability resistance and durability of the method are fully utilized, but the problems of surface cracking and the like also exist when the material is adopted in the field of using a large amount of cement mortar at present. Fang et al studied the solidification principle of tung oil mortar through ancient mortar and a laboratory simulation system to reveal the principle of tung oil improving mortar cohesiveness and waterproof property enhancement. The performances of the tung oil/lime slurry are obviously improved relative to the performances of the common lime slurry by Chenpehang and Zhao Peng.
In the traditional Chinese lime-plastic material, brown sugar or brown sugar, glutinous rice flour and the like are added to increase the viscosity of the lime slurry, and the formed calcium sugar is utilized to improve the consistency of the lime slurry and the formation process of calcium carbonate. Zhang take Zhang Zhan teach etc. to do a lot of research on traditional glutinous rice mortar in China and analyze its action principle. Zhang Zhengkai and other brown sugar mortar and egg white mortar are the research objects, the influence and action mechanism of sugar and egg white on the mortar performance are discussed, and the water reducing effect of 2 percent of sucrose content is over 20 percent, so that the risk of mortar drying shrinkage cracking can be effectively reduced. The egg white has the functions of thickening, improving the caking property and the self-repairing capability of the lime slurry and reducing the cracking risk, and has certain negative effects on the compressive strength and the surface hardness of the lime slurry.
The method is a good wall surface modification method, and is adopted by Ming dynasties buildings such as Wudangshan mountains, Qufuou holes and Temple Quwenge and the like. The natural plant fibers such as paper fiber ash, cotton mortar, wheat straw, caustic soda straw paper, super white paper fiber, jade button paper and the like are used as reinforcing materials of lime slurry building materials, the internal strength of the slurry is increased, and the cracking problem on the surface of calcium carbonate can be prevented to a certain extent.
In addition, Zhangkun et al reviewed that animal blood has air-entrapping, water-reducing, water-proofing, leveling, and crack-resisting effects on mortar, which have been studied at home and abroad.
In the various methods, the raw materials selected for improving the strength, cracking and other problems of the lime slurry are all natural, so that the method has the advantage of environmental protection; however, the raw materials are taken from different batches, so that the raw materials have large difference, have low stability and have no advantage in the production of large-batch building materials. The method for preparing the gray plastic paper rib ash material by using the cellulose is provided by Huanglixin and the like, and the method for preparing the gray plastic paper rib ash material by using the cellulose is used for preparing the gray plastic paper rib ash material by using the cellulose and cellulose derivatives as reinforcing and tackifying materials to replace the earth paper of jade buckle paper and Yuanbao paper; furthermore, a method for preparing the gray plastic material by using the fiber substance is provided, the paper rib gray material for preparing the gray plastic by using the possibly related chemical fiber material instead of the traditional earth paper replacing jade button paper and gold ingot paper, the selection range of raw materials of the material is expanded, and the traditional Chinese gray plastic product and the process thereof are improved.
The lime slurry is used in the field of modern building decoration, and the problems of environment-friendly raw materials, simple preparation and large-batch stable preparation need to be considered. Therefore, chemical materials are selected to replace natural materials, and the development of novel materials for environment-friendly buildings by adopting chemical products is of great significance.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention aims to provide the method for preparing the environment-friendly lime slurry building decoration material and the environment-friendly lime slurry building decoration material prepared by the method, so as to solve the problem that the material in the prior art is made of natural materials and is not suitable for large-scale stable preparation.
The purpose of the invention is realized by the following technical scheme:
a preparation method of an environment-friendly building decoration material comprises the following specific steps:
1) curing: crushing quicklime, sieving, removing coarse particles and impurities, placing in a reaction tank, adding 3.0-6.0 times of water by weight, uniformly stirring, and curing for 36-48 hours to obtain slaked lime slurry; performing stable separation operation on the slaked lime slurry, controlling the stable reaction temperature to be 50-75 ℃, and taking the upper layer lime water for later use;
2) pretreating modified cellulose, vegetable oil, animal glue or microbial glue: weighing 0.5-3% of modified cellulose by weight of quicklime, 1.0-5.0% of animal glue or microbial glue by weight of quicklime and 0.5-3.0% of vegetable oil by weight of quicklime, uniformly mixing, adding part of the saturated lime water obtained in the step 1), heating to 40-60 ℃, stirring, homogenizing, and keeping the temperature at 40 ℃ for 6-10 hours to obtain a modified cellulose, vegetable oil, animal glue or microbial glue cured material;
3) blending heavy calcium carbonate and calcium bicarbonate: weighing 5-30% of heavy calcium carbonate and 2-10% of calcium bicarbonate in parts by weight of quicklime, mixing, adding the mixture into the residual saturated limewater in the step 2), and stirring to obtain a lime slurry premix;
4) high-speed vacuum mixing: placing the modified cellulose, vegetable oil, animal glue or microbial glue cured material in the step 2) and the lime slurry premix in the step 3) into a high-speed mixer for mixing, vacuumizing, and then preserving heat and pressure for 6-18 hours to obtain mixed slurry;
5) aging: extruding the mixed slurry obtained in the step 4) through a double-screw extruder, and preserving heat for 20-40 days at 20-50 ℃ to obtain the environment-friendly lime slurry building decoration material.
Compared with the prior art, the invention takes hydrated lime, heavy calcium carbonate, modified cellulose, vegetable oil, animal glue or microbial glue and the like as main raw materials, and prepares the novel decorative material which can simultaneously replace the coating of the interior wall and the exterior wall in the traditional building material by pretreating the modified cellulose, the vegetable oil, the animal glue and the like; the chemical product is used for replacing natural materials in the traditional process, the materials are environment-friendly, the quality is stable, and the method is suitable for industrial large-scale stable preparation.
Preferably, the content of calcium oxide in the quicklime powder in the step 1) is 85-95%, and the fineness is 200-500 meshes; the content and the fineness of calcium oxide in the quicklime powder are screened, so that coarse particles and impurities can be removed, and the subsequent viscosity of the lime slurry can be regulated and controlled.
Preferably, the modified cellulose of step 2) includes, but is not limited to, two or more of carboxymethyl cellulose, carboxypropyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropylmethyl cellulose, modified starch, alkali-treated starch, bleached starch, oxidized starch, and starch esterified with acetic acid; the modified cellulose is generally used by matching two or more than two types, the matched two types of modified cellulose are generally used by mixing carboxyl cellulose or hydroxyl cellulose or modified starch, and can be used by mixing different types of modified cellulose or the same cellulose and different molecular weights; the viscosity of the modified cellulose is 1-20 ten thousand centipoise; the fluidity of the obtained slurry is improved by matching the types of the modified cellulose and regulating and controlling the viscosity ratio.
Preferably, the vegetable oil in step 2) is one or more of tung oil, castor oil, palm oil and olive oil; the vegetable oil is added to improve the volatilization speed of water in the lime slurry, and an oil film is formed on the surface of the lime slurry, so that the formation of finer calcium carbonate crystals is regulated and controlled, and a smooth surface is formed.
Preferably, the animal gum in step 2) is one or more of gelatin, bone gum, hide gum, casein, xanthan gum, gum arabic and guar gum; the higher the molecular weight, the less the amount of addition is selected; the adhesion of the lime slurry to different substrates is finally increased by adding animal glue as a viscosity modifier for the modified cellulose.
Preferably, the mesh number of the heavy calcium carbonate in the step 3) is 200-2000 meshes, and the purity is 95-98%; the ground calcium carbonate can utilize the function of fine calcium carbonate as a seed crystal to improve the crystal formation effect of hydrated lime in the carbonization process after use.
Preferably, the mesh number of the calcium bicarbonate in the step 3) is 200-2000 meshes, and the purity is 90-95%; during the plasticizing and carbonizing process, calcium bicarbonate reacts with hydrated lime to release carbon dioxide, promote the elimination of heat, form small gas passage and improve the carbonizing effect and speed.
Preferably, in the blending process of the ground calcium carbonate and the calcium bicarbonate in the step 3), the calcium bicarbonate is added in 2-6 batches in equal amount, so that the mixing is more uniform.
Preferably, the speed range of the high-speed mixing in the step 4) is 30-300 r/min; the uniform mixing and gelatinization of the components of the slurry can be ensured by high-speed mixing.
An environment-friendly lime slurry building decoration material is prepared by the method.
Preferably, the aging temperature of the environment-friendly lime slurry building and decorating material is 20-50 ℃, the uniformity is controlled while the heat generated by the environment-friendly lime slurry building and decorating material during aging is fully utilized, and the environment-friendly lime slurry building and decorating material can be stirred in a proper intermittent manner at a stirring speed of more than or equal to 5r/min for 2-4 hours.
Preferably, the aging time of the environment-friendly lime slurry building decoration material is 20-40 days, so as to ensure that the materials are fully and uniformly mixed, and the environment-friendly lime slurry building decoration material with difficult layering of components and stable performance is obtained.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) according to the invention, the precipitated lower-layer lime cream is abandoned by adopting the upper-layer saturated lime water, so that the influence of residual large particles and other impurities possibly contained in the precipitated lime cream on the prepared product is avoided, and the excellent mechanical property, the good product stability and the long service life of the product are ensured;
(2) hydrated lime, heavy calcium carbonate, modified cellulose, vegetable oil, animal glue or microbial glue and the like are used as main raw materials, and the modified cellulose, the vegetable oil, the animal glue and the like are pretreated to prepare a novel decorative material which can simultaneously replace the coating of the interior wall and the exterior wall in the traditional building material; the material is environment-friendly, the quality is stable, natural materials are not required to be added, the influence of the difference between batches of the natural raw materials on the product performance is avoided, and the requirement of industrial large-batch stable production can be met
(3) The plant oil, the modified cellulose and the animal glue or the microbial glue are added and matched with the raw materials, and the slurry is extruded by a screw extruder, so that the prepared decorative material product has the advantages of smooth surface, good fluidity and good adhesion to different base materials, and the painted surface is smooth and has no cracks; meanwhile, the raw material components do not contain heavy metal and formaldehyde, and the formaldehyde content of the prepared environment-friendly lime slurry building decoration material is lower than the detection value of an instrument, so that the environment-friendly lime slurry building decoration material is environment-friendly.
Detailed Description
Example 1
In this embodiment, the preparation method of the environment-friendly lime slurry building decoration material of the invention comprises the following steps:
(1) curing: crushing quicklime, sieving, removing coarse particles and impurities to obtain particles with calcium oxide content of 90% and fineness of 200 meshes, adding 3.0 times of deionized water by weight into a reaction tank, stirring by using an anchor stirrer at a stirring speed of 40r/min, accurately controlling the whole reaction temperature to be less than 75 ℃, aging for more than 36 hours, standing for layering, and taking upper saturated limewater for later use.
(2) Pretreatment of modified cellulose, tung oil and gelatin: weighing hydroxymethyl propyl cellulose with the weight part of 0.5% of quicklime, the viscosity of 20 ten thousand centipoise, hydroxymethyl cellulose with the weight part of 0.3% of the quicklime and the viscosity of 10 ten thousand centipoise, firstly mixing gelatin with the weight part of 1.0% of the quicklime into powder by a mixer and a flour mixer, slowly adding a part of saturated lime water, stirring and pasting, adding tung oil with the speed of 0.5% after uniform pasting, mixing at the stirring speed of 5r/min, and raising the temperature to 40 ℃ by adopting the temperature rise speed of 2 ℃/min after uniform stirring, wherein the stirring speed is 10 r/min. When the temperature reaches the set temperature, the modified cellulose, the tung oil and the gelatin cooked material are obtained after heat preservation for 6 hours at 40 ℃.
(3) Blending heavy calcium carbonate and calcium bicarbonate: weighing 5 percent of heavy calcium carbonate (1000 meshes, purity 85 percent) and 2 percent of calcium bicarbonate (1000 meshes, purity 90 percent) by weight of quicklime, adding the calcium bicarbonate into the heavy calcium carbonate in 2 batches in equal amount, mixing the mixture in a dry state, uniformly adding the mixture into the rest saturated limewater in 5 batches, and stirring the mixture vigorously to obtain the lime slurry premix.
(4) High-speed vacuum mixing: and (3) mixing the modified cellulose, the vegetable oil, the gelatin cooked material and the lime slurry premix in a high-speed mixer at a stirring speed of 50r/min, vacuumizing, and preserving heat and pressure for 6 hours.
(5) Aging: extruding the mixed slurry obtained in the step (4) by a double-screw extruder, slightly stirring the obtained slurry at 30 ℃ at an interval of 2 hours at a stirring speed of 5r/min, and preserving heat for 20 days to obtain the lime slurry building decoration material.
Example 2
In this embodiment, the preparation method of the environment-friendly lime slurry building decoration material of the invention comprises the following steps:
(1) curing: crushing quicklime, sieving, removing coarse particles and impurities to obtain particles with calcium oxide content of 85% and fineness of 200 meshes, adding 3.0 times of deionized water by weight into a reaction tank, stirring by using an anchor stirrer at a stirring speed of 40r/min, accurately controlling the whole reaction temperature to be less than 75 ℃, aging for more than 36 hours, standing for layering, and taking upper saturated limewater for later use.
(2) Pretreatment of modified cellulose, olive oil and xanthan gum: weighing 0.3% hydroxyethyl cellulose by weight of quick lime, 1 million centipoise in viscosity, 0.2% hydroxypropyl cellulose with 10 million centipoise in viscosity, mixing xanthan gum 5.0% by weight of quick lime in a flour-mixing manner by a mixer, slowly adding a part of saturated lime water, stirring and gelatinizing, adding 0.5% olive oil after uniformly gelatinizing, mixing at a stirring speed of 5r/min, uniformly stirring, increasing the temperature to 40 ℃ by a heating speed of 2 ℃/min, and stirring at a stirring speed of 10 r/min. And when the temperature reaches the set temperature, preserving the heat at 40 ℃ for 10 hours to obtain the modified cellulose, olive oil and xanthan gum cured material.
(3) Blending heavy calcium carbonate and calcium bicarbonate: weighing 5 percent of heavy calcium carbonate (200 meshes, the purity of 95 percent) and 10 percent of calcium bicarbonate (2000 meshes, the purity of 95 percent) by weight of quicklime, adding 6 batches of the calcium bicarbonate into the heavy calcium carbonate in equal amount, uniformly adding the mixture into the rest saturated limewater in 5 batches after dry mixing, and stirring forcefully to obtain the lime slurry premix.
(4) High-speed vacuum mixing: and (3) mixing the modified cellulose, the vegetable oil, the gelatin cooked material and the lime slurry premix in a high-speed mixer at a stirring speed of 30r/min, vacuumizing, and preserving heat and pressure for 18 hours.
(5) Aging: extruding the mixed slurry obtained in the step (4) by a double-screw extruder, slightly stirring the obtained slurry at 20 ℃ at the interval of 2 hours at the stirring speed of 5r/min, and preserving heat for 40 days to obtain the lime slurry building decoration material.
Example 3
In this embodiment, the preparation method of the environment-friendly lime slurry building decoration material of the invention comprises the following steps:
(1) curing: crushing quicklime, sieving, removing coarse particles and impurities to obtain particles with calcium oxide content of 95% and fineness of 500 meshes, adding 6.0 times of deionized water by weight into a reaction tank, stirring by using an anchor stirrer at a stirring speed of 40r/min, accurately controlling the whole reaction temperature to be less than 75 ℃, aging for more than 48 hours, standing for layering, and taking upper saturated limewater for later use.
(2) Pretreatment of modified cellulose, olive oil and xanthan gum: weighing hydroxyethyl cellulose 2.5 percent by weight of quick lime, hydroxypropyl cellulose 0.5 percent by weight of viscosity 20 ten thousand centipoise, mixing xanthan gum 1.0 percent by weight of quick lime with a mixer and a flour mixer in a powdery manner, slowly adding a part of saturated lime water, stirring and gelatinizing, adding olive oil 3.0 percent after uniform gelatinizing, mixing at a stirring speed of 5r/min, raising the temperature to 60 ℃ by adopting a temperature raising speed of 2 ℃/min after the mixture is uniform, and stirring at a stirring speed of 10 r/min. And when the temperature reaches the set temperature, preserving the heat for 6 hours at 40 ℃ to obtain the modified cellulose, olive oil and xanthan gum cured material.
(3) Blending heavy calcium carbonate and calcium bicarbonate: weighing 5 percent of heavy calcium carbonate (200 meshes, the purity of 95 percent) and 10 percent of calcium bicarbonate (2000 meshes, the purity of 95 percent) by weight of quicklime, adding 6 batches of the calcium bicarbonate into the heavy calcium carbonate in equal amount, uniformly adding the mixture into the rest saturated limewater in 5 batches after dry mixing, and stirring forcefully to obtain the lime slurry premix.
(4) High-speed vacuum mixing: and (3) mixing the modified cellulose, the vegetable oil, the gelatin cooked material and the lime slurry premix in a high-speed mixer at a stirring speed of 300r/min, vacuumizing, and preserving heat and pressure for 6 hours.
(5) Aging: extruding the mixed slurry obtained in the step (4) by a double-screw extruder, slightly stirring the obtained slurry at 50 ℃ at an interval of 2 hours at a stirring speed of 5r/min, and preserving heat for 20 days to obtain the lime slurry building decoration material.
Compared with the prior art, the invention adopts the upper saturated lime water layer and abandons the precipitated lower lime cream layer, thereby avoiding the influence on the prepared product caused by residual large particles and other impurities possibly contained in the precipitated lime cream, and ensuring the excellent mechanical property, good product stability and longer service life of the product. The white lime, the heavy calcium carbonate, the modified cellulose, the vegetable oil, the animal glue or the microbial glue and the like are used as main raw materials, the materials are environment-friendly, the quality is stable, natural materials are not required to be added, the influence of the batch difference of the natural raw materials on the product performance is avoided, and the requirement of industrial large-batch stable production can be met. The decorative material product prepared by adding and mutually matching the vegetable oil, the modified cellulose and the animal glue or the microbial glue and extruding the slurry by a screw extruder has the advantages of smooth surface, good fluidity and good adhesion to different base materials, and the painted surface is smooth and has no cracks; meanwhile, the raw material components do not contain heavy metal and formaldehyde, and the formaldehyde content of the prepared environment-friendly lime slurry building decoration material is lower than the detection value of an instrument, so that the environment-friendly lime slurry building decoration material is environment-friendly.
The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.
Claims (2)
1. The preparation method of the environment-friendly lime slurry building and decorating material is characterized by comprising the following specific steps of:
1) curing: crushing quicklime, sieving, removing coarse particles and impurities, placing in a reaction tank, adding 3.0-6.0 times of water by weight, uniformly stirring, and curing for 36-48 hours to obtain slaked lime slurry; wherein the content of calcium oxide in the quicklime powder is 85-95%, and the fineness is 200-500 meshes; performing stable separation operation on the slaked lime slurry, controlling the stable reaction temperature to be 50-75 ℃, and taking upper saturated lime water for later use;
2) pretreating modified cellulose, vegetable oil, animal glue or microbial glue: weighing 0.5-3% of modified cellulose by weight of quicklime, 1.0-5.0% of animal glue or microbial glue by weight of quicklime and 0.5-3.0% of vegetable oil by weight of quicklime, uniformly mixing, adding part of the saturated lime water obtained in the step 1), heating to 40-60 ℃, stirring, homogenizing, and keeping the temperature at 40 ℃ for 6-10 hours to obtain a modified cellulose, vegetable oil, animal glue or microbial glue cured material;
wherein the modified cellulose has a viscosity of 1 to 20 ten thousand centipoise, including but not limited to two or more of carboxymethyl cellulose, carboxypropyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose and hydroxypropyl methyl cellulose, modified starch milk alkali treated starch, bleached starch, oxidized starch, and acetylated starch;
the vegetable oil is one or more of tung oil, castor oil, palm oil and olive oil;
the animal gum is one or more of gelatin, bone gum, hide glue, casein, xanthan gum, gum arabic and guar gum;
3) blending heavy calcium carbonate and calcium bicarbonate: weighing 5-30% of heavy calcium carbonate and 2-10% of calcium bicarbonate by weight of quick lime, wherein the mesh number of the heavy calcium carbonate is 200-;
4) high-speed vacuum mixing: mixing the modified cellulose, vegetable oil, animal glue or microbial glue cured material in the step 2) and the lime slurry premix in the step 3) in a high-speed mixer at the high-speed mixing speed of 30-300r/min, vacuumizing, and keeping the temperature and pressure for 6-18 hours to obtain mixed slurry;
5) aging: extruding the mixed slurry obtained in the step 4) through a double-screw extruder, and preserving heat for 20-40 days at 20-50 ℃ to obtain the environment-friendly lime slurry building decoration material.
2. An environment-friendly lime slurry building decoration material is characterized in that: prepared by the method of claim 1.
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| CN111393119A (en) * | 2020-03-26 | 2020-07-10 | 西京学院 | Freeze-thawing resistant lime-based tung oil mortar for building and preparation method thereof |
| CN114215377B (en) * | 2021-10-12 | 2022-12-06 | 贵州建工安顺建筑工程有限公司 | Antique building wall surface repairing method |
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