CN113620635B - Sound insulation auxiliary agent and sound insulation mortar containing same - Google Patents

Sound insulation auxiliary agent and sound insulation mortar containing same Download PDF

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Publication number
CN113620635B
CN113620635B CN202111061212.7A CN202111061212A CN113620635B CN 113620635 B CN113620635 B CN 113620635B CN 202111061212 A CN202111061212 A CN 202111061212A CN 113620635 B CN113620635 B CN 113620635B
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sound
sound insulation
mortar
powder
insulating
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CN113620635A (en
Inventor
纪雪欢
蔡剑育
李远驰
洪永顺
洪量
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Guangdong Longhu Sci & Tech Co ltd
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Guangdong Longhu Sci & Tech Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • C04B40/0039—Premixtures of ingredients
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/52—Sound-insulating materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention relates to the technical field of building materials, in particular to a sound insulation auxiliary agent and sound insulation mortar containing the same, wherein the sound insulation auxiliary agent comprises the following components in percentage by mass: 40-60% of thixotropic lubricant, 20-30% of quartz powder and 20-30% of flexible latex powder; the thixotropic lubricant is an active sheet phyllosilicate material, the quartz powder is a natural framework silicate material, and the flexible latex powder is vinyl acetate/ethylene copolymer powder. The sound insulation comprises the sound insulation auxiliary agent. Compared with the prior art, the sound-insulation mortar disclosed by the invention solves the problems of poor sound-insulation effect, low strength and difficulty in construction of the existing mortar, and can be used for ground construction and wall construction.

Description

Sound insulation auxiliary agent and sound insulation mortar containing same
Technical Field
The invention relates to the technical field of building materials, in particular to a sound insulation auxiliary agent and sound insulation mortar containing the same.
Background
With the improvement of living standard of people, people gradually realize the influence of sound on life, and the traditional brick wall plays no great role in sound isolation. In the city that population density is high, many residents live in high-rise concrete building, and near the building transportation convenience, the vehicle process is comparatively frequent, and the noise problem is more serious, and people also comparatively pay close attention to building sound insulation, and sound-proof material's demand is also more and more.
Chinese patent CN201110132970.3 discloses a light heat-insulating sound-insulating damping floor mortar, which is formed by mixing the following components in percentage by mass: 30-40% of cement; 0-28% of coarse elastic rubber aggregate; 5-50% of fine elastic rubber aggregate; 5-15% of inorganic vitrified microsphere aggregate; 0.5-3% of redispersible latex powder; 0.05-0.15% of cellulose ether; 0.02-0.06% of 6mm fiber; 0.05-0.1% of hectorite additive. The mortar is scraped in batches to form a sound insulation layer, so that the existence of sound bridges is greatly reduced, the compressive strength is moderate, the deformation is not easy to generate, the load of a building can not be greatly increased, the mortar has a very low heat conductivity coefficient, and the heat insulation effect is realized while the sound insulation of a floor slab is realized.
In addition, chinese patent CN201610585305.2 also discloses a heat-insulating and sound-insulating dry powder mortar, which comprises the following components in parts by mass: cement: 30% -40%; vitrification of the micro-beads: 30% -35%; elastic rubber powder: 9% -14%; emulsion powder: 0.5% -2%; clay: 5% -7%; lime calcium: 4% -5%; polypropylene fiber: 0.5% -2%; cellulose ether: 0.4% -3%; water reducing agent: 1 to 2 percent. The dry powder mortar has excellent building heat preservation and insulation effects, stable performance, small fluctuation, good sound insulation effect, excellent construction performance, excellent bonding performance, non-inflammability, no hollowing and cracking and low economic cost.
In the two patents, the sound insulation effect of the mortar is adjusted by compounding damping materials such as rubber particles, vitrified micro bubbles and the like in the aspect of sound insulation of the mortar. However, it should be emphasized that the excessive increase of the content of the rubber particles and the vitrified micro bubbles can cause the strength of the mortar to be seriously reduced, and the mortar is only suitable for batch scraping of wall surface layers and is not suitable for batch scraping of ground surface layers. Moreover, the mortar of the two patents is difficult to construct and needs to meet certain professional operation requirements.
Disclosure of Invention
The invention mainly aims to provide a sound insulation additive and sound insulation mortar containing the same, and aims to solve the problems of poor sound insulation effect, low strength and difficult construction of the existing mortar.
In order to achieve the above object, in a first aspect, the present invention provides a sound insulation additive, which comprises the following components by mass: 40-60% of thixotropic lubricant, 20-30% of quartz powder and 20-30% of flexible latex powder; the thixotropic lubricant is an active sheet phyllosilicate material, the quartz powder is a natural framework silicate material, and the flexible latex powder is vinyl acetate/ethylene copolymer powder.
Generally, the thixotropic lubricant is mainly used for improving the workability in a cement-based system and increasing the workability and the sag resistance of mortar, and the quartz powder is mainly used for improving the acid resistance and the corrosion resistance of the mortar in the mortar. The inventor finds that when the thixotropic lubricant, the quartz powder and the flexible latex powder are mixed in a specific mass percentage, the composite material not only has a remarkable sound insulation effect, but also can improve the compressive strength. The inventor discovers that the active sheet phyllosilicate of the thixotropic lubricant swells and disperses into single sheets when meeting water, the quartz powder has a natural frame-shaped silicate structure, the single sheets of the quartz powder and the thixotropic lubricant are combined to form a compact cabin structure, and the cabin structure can play an effective sound source reflection role, so that the sound insulation effect of the sound insulation auxiliary agent is good; the flexible latex powder has the function of absorbing a sound source, so that the three components block the sound source from two directions of a reflection sound source and an absorption sound source together, and further, the obvious sound insulation effect is achieved.
Preferably, the fineness of the thixotropic lubricant is 300-350 meshes. More preferably, the thixotropic lubricant has a fineness of 325 mesh.
Preferably, the fineness of the quartz powder is 300-350 meshes, wherein SiO is 2 The content of (A) is more than or equal to 99 percent. More preferably, the fineness of the quartz powder is 325 mesh.
Preferably, the thixotropic lubricant is a BYK OPTIBENT-987 thixotropic lubricant.
Preferably, the flexible latex powder is WACKER 5044N latex powder.
Preferably, the preparation method of the sound insulation auxiliary agent comprises the following steps: weighing the components according to the mass percentage, mixing the components, and placing the mixture in a dry powder stirrer to stir for 10-20 min until the mixture is uniformly stirred.
In a second aspect, the present invention provides a sound-proofing mortar comprising a sound-proofing aid as described in any of the preceding paragraphs.
Preferably, the mass of the sound insulation auxiliary agent accounts for 8-12% of the total mass of the sound insulation mortar. More preferably, the mass of the sound-insulating additive accounts for 10% of the total mass of the sound-insulating mortar.
Preferably, the sound insulation mortar comprises the following components in percentage by mass: 25-35% of portland cement, 55-65% of coarse sand, 0.05-0.2% of cellulose ether and 8-12% of a sound insulation aid, wherein the fineness of the coarse sand is 30-50 meshes. More preferably, the sound insulation mortar comprises the following components in percentage by mass: 30% of Portland cement, 59.9% of coarse sand, 0.1% of cellulose ether and 10% of sound insulation auxiliary agent.
Preferably, the preparation method of the sound insulation mortar comprises the following steps: weighing the components according to the mass percentage, mixing the components, and placing the mixture into a dry powder stirrer to be uniformly stirred.
Compared with the prior art, the invention has the beneficial effects that:
the sound insulation auxiliary agent comprises the thixotropic lubricant, the quartz powder and the flexible latex powder, on one hand, the thixotropic lubricant is an active sheet layered silicate material, a sheet layered silicate structure of the thixotropic lubricant swells and disperses into single sheets when meeting water, the quartz powder has a natural frame-shaped silicate structure, and when the quartz powder and the single sheets of the thixotropic lubricant are combined to form a compact cabin structure, the cabin structure can play an effective sound source reflection role, so that the sound insulation effect of the sound insulation auxiliary agent is good. The sound insulation mortar contains the sound insulation additive, so that a sound source can be effectively reflected to prevent the sound source from passing through the mortar layer, and the sound insulation effect of the sound insulation mortar is remarkable; on the other hand, the flexible latex powder has the function of absorbing a sound source, so that the sound insulation auxiliary agent has a better effect. In addition, the thixotropic lubricant can improve the workability and compressive strength of the mortar, the quartz powder can be added into the mortar as a refractory material to improve the refractory performance of a mortar layer and greatly improve the compressive strength of the mortar, the flexible latex powder can form a continuous film in the mortar so that the mortar layer has excellent flexibility, and the flexible latex powder can improve the impact resistance and has good crack resistance, good workability and the like. In conclusion, the sound insulation auxiliary agent is added, so that the mortar has the advantages of obvious sound insulation effect, easiness in construction and high strength, and can be used for ground construction and wall construction.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The sound insulation mortar comprises the following components in percentage by mass: 30% of Portland cement, 59.9% of coarse sand, 0.1% of cellulose ether and 10% of sound insulation auxiliary agent, wherein the fineness of the coarse sand is 30-50 meshes. The preparation method of the sound insulation mortar comprises the following steps: weighing the components according to the mass percentage, mixing the components and placing the mixture in a dry powder stirrer to be uniformly stirred.
Wherein the sound insulation auxiliary agent comprises the following components in percentage by mass: 40% of thixotropic lubricant (BYK OPTIBENT-987), 30% of quartz powder and 30% of flexible latex powder (WACKER 5044N); the thixotropic lubricant is an active sheet phyllosilicate material, and the flexible latex powder is vinyl acetate/ethylene copolymer rubber powder. The fineness of the thixotropic lubricant is 325 meshes. The fineness of the quartz powder is 325 meshes, wherein the SiO is 2 The content of (A) is more than or equal to 99 percent. The preparation method of the sound insulation auxiliary agent comprises the following steps: weighing the components according to the mass percentage, mixing the components, and placing the mixture in a dry powder stirrer to stir for 10-20 min until the mixture is uniformly stirred.
Example 2
The difference from example 1 is:
the sound insulation auxiliary agent of the embodiment comprises the following components in percentage by mass: 50% of thixotropic lubricant (BYK OPTIBENT-987), 20% of quartz powder and 30% of flexible latex powder (WACKER 5044N).
The rest is the same as embodiment 1, and the description is omitted here.
Example 3
The difference from example 1 is:
the sound insulation additive comprises the following components in percentage by mass: 50% of thixotropic lubricant (BYK OPTIBENT-987), 30% of quartz powder and 20% of flexible latex powder (WACKER 5044N).
The rest is the same as embodiment 1, and the description is omitted here.
Example 4
The difference from example 1 is:
the sound insulation auxiliary agent of the embodiment comprises the following components in percentage by mass: 50% of thixotropic lubricant (BYK OPTIBENT-987), 25% of quartz powder and 25% of flexible latex powder (WACKER 5044N).
The rest is the same as embodiment 1, and the description is omitted here.
Example 5
The difference from example 1 is:
the sound insulation auxiliary agent of the embodiment comprises the following components in percentage by mass: 60% of thixotropic lubricant (BYK OPTIBENT-987), 20% of quartz powder and 20% of flexible latex powder (WACKER 5044N).
The rest is the same as embodiment 1, and the description is omitted here.
Comparative example 1
The difference from example 1 is:
no sound insulation additive was added to the mortar of this comparative example.
The rest is the same as embodiment 1, and the description is omitted here.
Comparative example 2
The difference from example 1 is:
the sound insulation auxiliary agent of the comparative example comprises the following components in percentage by mass: 30% of thixotropic lubricant (BYK OPTIBENT-987), 60% of quartz powder and 10% of flexible latex powder (WACKER 5044N).
The rest is the same as embodiment 1, and the description is omitted here.
Comparative example 3
The difference from example 1 is:
the sound insulation additive of the comparative example comprises the following components in percentage by mass: 80% of thixotropic lubricant (BYK OPTIBENT-987), 10% of quartz powder and 10% of flexible latex powder (WACKER 5044N).
The rest is the same as embodiment 1, and the description is omitted here.
Comparative example 4
The difference from example 1 is:
the sound-insulating aid of this comparative example was rubber particles.
The rest is the same as embodiment 1, and the description is omitted here.
Comparative example 5
The difference from example 1 is:
the sound-insulating aid of this comparative example was vitrified beads.
The rest is the same as embodiment 1, and the description is omitted here.
Examples of the experiments
And (2) molding the prepared mortar for 1d, demolding to obtain a test piece, maintaining for 28d under standard conditions (temperature (23 +/-2) DEG C and relative humidity (50 +/-5)%), determining the compressive strength of the test piece according to JGJ/T70-2009 Standard test method for basic performance of building mortar, and according to national standard GB/T19889.6-2005 Acoustic-building and building component Sound insulation measurement-part 6: floor impact sound insulation laboratory measurement and GB/T50121-2005 building sound insulation evaluation Standard test authorization standardization impact sound pressure level L n,W . The test results are shown in table 1 below.
TABLE 1 test results
Figure BDA0003256645600000061
As can be seen from table 1, the mortar of the example has a higher compressive strength and a more significant sound insulation effect than the mortar of comparative example 1 to which no sound insulation aid is added, thereby showing that the sound insulation aid of the present invention has a good sound insulation effect and can improve the compressive strength. As can be seen from comparison between the examples and comparative examples 2-3, the mass percentage of each component of the sound-insulating assistant in the comparative example does not fall within the scope of the invention, and although the compressive strength is higher, the sound-insulating effect is obviously poorer than that of the examples, thereby showing that the sound-insulating effect and the compressive strength of the mortar can be simultaneously optimized when and only when the mass percentage of each component of the sound-insulating assistant is within the scope of the invention. In addition, as can be seen from the comparison between the embodiment and the comparative examples 4 to 5, when the rubber particles and the vitrified micro bubbles are adopted as the sound insulation auxiliary agent in the comparative examples, the compressive strength is very poor, the sound insulation effect is not as good as that of the invention, meanwhile, the rubber particles have strong rubber smell in the actual construction, even though the construction is finished, the rubber smell still exists, the sound insulation effect is bad for residents, the vitrified micro bubbles can be crushed due to improper stirring of workers in the field construction, and once the vitrified micro bubbles are crushed, the sound insulation effect is greatly reduced, so that the sound insulation effect of the sound insulation auxiliary agent is superior to that of the traditional damping sound insulation material, and the sound insulation auxiliary agent can obviously improve the compressive strength of the sound insulation mortar without the requirement of the professional technology for the workers.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications, equivalents and applications made by the present invention in the spirit of the present invention or other related fields are included in the scope of the present invention.

Claims (10)

1. The sound insulation additive is characterized by comprising the following substances in percentage by mass: 40-60% of thixotropic lubricant, 20-30% of quartz powder and 20-30% of flexible latex powder; the thixotropic lubricant is an active sheet phyllosilicate material, the quartz powder is a natural framework silicate material, and the flexible latex powder is vinyl acetate/ethylene copolymerized rubber powder.
2. A sound-insulating aid according to claim 1 wherein said thixotropic lubricant has a fineness of 300 to 350 mesh.
3. A sound-insulating aid according to claim 1, wherein the fineness of the quartz powder is 300 to 350 mesh, wherein SiO is 2 The content of (A) is more than or equal to 99 percent.
4. A sound-proofing aid according to claim 1, wherein the thixotropic lubricant is a BYK optiment-987 thixotropic lubricant.
5. A sound-insulating aid as claimed in claim 1 wherein said flexible latex powder is WACKER 5044N latex powder.
6. The sound-proofing aid according to any one of claims 1 to 5, wherein the sound-proofing aid is prepared by a method comprising: weighing the components according to the mass percentage, mixing the components, and placing the mixture in a dry powder stirrer to stir for 10-20 min until the mixture is uniformly stirred.
7. A sound-insulating mortar characterized by comprising the sound-insulating aid according to any one of claims 1 to 6.
8. The sound-insulating mortar according to claim 7, wherein the sound-insulating additive accounts for 8 to 12% by mass of the total mass of the sound-insulating mortar.
9. The sound-proofing mortar of claim 8, wherein the sound-proofing mortar comprises the following composition in mass percent: 25-35% of portland cement, 55-65% of coarse sand, 0.05-0.2% of cellulose ether and 8-12% of a sound insulation aid, wherein the fineness of the coarse sand is 30-50 meshes.
10. A sound-proofing mortar as claimed in claim 9, characterized in that it is prepared by a process comprising: weighing the components according to the mass percentage, mixing the components and placing the mixture in a dry powder stirrer to be uniformly stirred.
CN202111061212.7A 2021-09-10 2021-09-10 Sound insulation auxiliary agent and sound insulation mortar containing same Active CN113620635B (en)

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CN106186933A (en) * 2016-07-07 2016-12-07 长兴贝斯德邦建材科技有限公司 A kind of environment-friendly exterior wall heat preservation putty and preparation method thereof
CN108516750B (en) * 2018-06-08 2020-12-15 深圳市奇信集团股份有限公司 Sound-insulating putty for interior wall and preparation method thereof

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