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High-strength gypsum-based sound insulation and thermal insulation machine spray mortar and composite thermal insulation layer

A technology of sound insulation and heat preservation and machine spraying mortar, which is applied in the field of building decoration and construction, can solve the problems of high viscosity of thermal insulation materials, high labor intensity, and great influence of thermal insulation material viscosity, and achieves high bonding fastness and low labor intensity. , the effect of efficient construction

Active Publication Date: 2020-11-03
苏州高新大乘低碳环保新材发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned composite thermal insulation materials contain quartz sand aggregates with relatively high density, which are easy to precipitate when adding too much water, and the stability after mixing is not ideal; adhesives, organic montmorillonite, water-retaining thickeners and hydrophobic Latex powder has a great influence on the viscosity of thermal insulation materials. After mixing with water, the thermal insulation materials have high viscosity and poor fluidity, which makes it difficult to spray.
Due to the existence of these factors, the above-mentioned composite thermal insulation materials can only be constructed by the conventional low-efficiency and labor-intensive scraping method, and cannot adapt to modern spraying construction.

Method used

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  • High-strength gypsum-based sound insulation and thermal insulation machine spray mortar and composite thermal insulation layer
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  • High-strength gypsum-based sound insulation and thermal insulation machine spray mortar and composite thermal insulation layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0072] Examples 1-6 all relate to a high-strength gypsum-based sound-insulating and heat-insulating mortar, and the contents of each component are shown in the following table in parts by weight:

[0073]

[0074] Among them, the white high-strength gypsum is high-strength gypsum with a flexural strength greater than 5MPa; the true density of the hollow glass beads is 0.4g / cm 3 , particle diameter is 114 μ m; The particle diameter of lightweight vitrified microbead is 220 μ m; Gypsum retarder is commercially available common gypsum retarder, and the gypsum retarder used in the embodiment 1-6 is QH80 efficient gypsum retarder Coagulant (Shanghai Qinhe Chemical Co., Ltd.); Hydrophobic dispersible latex powder can be selected polyvinyl acetate latex powder or polyacrylate latex powder, all selects polyvinyl acetate latex powder for use in embodiment 1-6; Bentonite selects for use Na-based bentonite, lithium-based bentonite or calcium-based bentonite can be used, and sodium-bas...

Embodiment 7-18

[0079] Embodiments 7-18 all relate to a kind of high-strength gypsum-based sound insulation and thermal insulation machine spray mortar, and all include:

[0080] White high-strength gypsum 825 parts

[0081] Hollow glass microspheres 45 parts

[0082] Lightweight vitrified microbeads 45 parts

[0083] 90 parts of polyvinyl acetate latex powder

[0084] 4 parts hydroxyethyl methylcellulose ether

[0085] Sodium bentonite 6 parts

[0086] QH80 efficient gypsum retarder 4 parts

[0087] 950 parts of water;

[0088] Among them, the flexural strength of white high-strength gypsum is greater than 5MPa, and the viscosity of hydroxyethyl methylcellulose ether is 170000MPa·s.

[0089] The difference between Examples 7-18 is that the selected hollow glass microspheres and light vitrified microspheres are different, as shown in the following table,

[0090]

Embodiment 19

[0092] A method for preparing high-strength gypsum-based sound-insulating and heat-insulating machine spray mortar, specifically comprising the following steps:

[0093] Step 1, take each component according to embodiment 1;

[0094] Step 2. First, add light vitrified microspheres and polyvinyl acetate latex powder into the blender, and stir evenly;

[0095] Step 3, add white high-strength gypsum, hydroxyethyl methylcellulose ether and sodium bentonite to the mixer and continue stirring;

[0096] Step 4, then, add hollow glass microspheres and gypsum retarder to the mixer, and stir evenly;

[0097] Step 5. Finally, add water and stir evenly to obtain the high-strength gypsum-based sound insulation and thermal insulation machine spray mortar of Example 1;

[0098] The stirring speed in step 2, step 3, step 4 and step 5 is 800rpm.

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Abstract

The invention discloses high-strength-gypsum-based sound insulation and thermal insulation machine spraying mortar, belongs to the technical field of building and ornament materials and preparation, and solves the problem that in the prior art, gypsum-based mortar is not applicable to machine spraying construction. The high-strength-gypsum-based sound insulation and thermal insulation machine spraying mortar is characterized by being prepared from the following components in parts by weight: 800-850 parts of white high-strength gypsum, 30-60 parts of hollow glass beads, 30-60 parts of light glass beads, 60-120 parts of hydrophobic type dispersible latex powder, 3-5 parts of cellulose ether, 2-10 parts of bentonite, 4.0-5.5 parts of gypsum retarder and 900-1,000 parts of water. The gypsum-based mortar has the advantages of high liquidity and high stability, is applied to machine spraying construction, has a good thermal insulation effect after construction, and is high in sound insulation performance and water resistance. The invention correspondingly discloses a preparation method of the high-strength-gypsum-based sound insulation and thermal insulation machine spraying mortar, anda composite thermal insulation layer applying the machine spraying mortar and a construction method of the composite thermal insulation layer.

Description

technical field [0001] The invention relates to the technical field of architectural decoration and construction, more specifically, it relates to a high-strength gypsum-based sound-insulating and heat-insulating machine spraying mortar and a composite heat-insulating layer. Background technique [0002] Building thermal insulation materials can be used to reduce heat loss in the indoor and outdoor environments of buildings and effectively reduce the load of building air-conditioning. It is an important part of building construction and implementing energy-saving renovations. its further development and application. Therefore, it is urgent to develop new energy-saving building insulation materials that are moisture-proof. [0003] In order to solve the above problems, the Chinese patent application publication number CN106316320A discloses a moisture-resistant gypsum-based composite thermal insulation material and a preparation method thereof. 10-15 parts of hydrophobic ex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14E04B1/76C04B111/52
CPCC04B28/14C04B2111/52C04B2201/32E04B1/7625C04B14/24C04B2103/0057C04B24/383C04B14/104C04B22/142
Inventor 顾加艳单秀军
Owner 苏州高新大乘低碳环保新材发展有限公司
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