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Inorganic hollow vitrified microbead thermal insulation mortar and preparation method thereof

A technology of empty vitrified microbeads and thermal insulation mortar, which is applied in the field of building materials, can solve the problems of easy cracking and durability of plastering mortar, unsatisfactory thermal insulation and anti-freezing effect, and unsatisfactory anti-freezing performance, so as to avoid hollowing and cracking, Good operating feel and the effect of improving the efficiency of wiping

Inactive Publication Date: 2020-10-30
贵州建工安顺建筑工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many kinds of mortars for external wall insulation materials in the domestic market, and their performance varies. Many insulation mortars have unsatisfactory thermal insulation and frost resistance effects, low strength, and are prone to hollowing, falling off, pulverization, and cracking in the later stage, which makes rework difficult. , the shortcoming of cost increase; Another example is the use of cement, silicon micropowder, lime calcium powder, expanded vermiculite, sandstone, hollow glass microspheres, rock wool silk, modified fly ash, polyphenylene particles, wood fiber, It is prepared from polypropylene fiber, polyvinyl alcohol powder, dispersible latex powder and cellulose ether, which solves the problems of easy cracking and poor durability of plastering mortar made of existing external wall insulation materials, and realizes High heat preservation, heat insulation, and crack resistance, but its strength is not ideal; another example is the patent CN102690091A hollow microbead masonry special insulation mortar including raw materials: special cement, fly ash, quartz sand, masterbatch, hollow microbeads and Heavy calcium carbonate; the plastering mortar special for masonry with hollow microspheres includes the following raw materials: ordinary silicon cement, fly ash, polymer, quartz sand, hollow microspheres and heavy calcium carbonate, but its antifreeze performance is not ideal, and its thermal insulation performance is not satisfactory. still room for improvement

Method used

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  • Inorganic hollow vitrified microbead thermal insulation mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] An inorganic hollow vitrified microbead insulation mortar, raw materials in parts by weight: 400 parts of cement, 50 parts of fly ash, 50 parts of ash calcium, 300 parts of hollow vitrified microbeads, 1 part of rubber powder, and 1 part of cellulose , 1 part of thickener.

[0024] The cement is composed of 95% by mass of Portland cement and 5% of magnesium oxychloride cement; preferably, the model of the Portland cement is No. 32.5.

[0025] The particle size of the fly ash is 40 mesh, the water content is 1%, the sulfur trioxide content is 0.5%, and the loss on ignition is 1.5%.

[0026] The particle size of the gray calcium is 500 mesh.

[0027] The particle size of the hollow vitrified microspheres is 50 mesh, and the bulk density is 20kg / m 3 , The thermal conductivity is 0.05W / m·k.

[0028] The particle size of the rubber powder is 380 μm, the bulk density is 515 kg / m3, the solid content is 99%, and the film-forming temperature is 1°C.

[0029] The cellulose is...

Embodiment 2

[0033] An inorganic hollow vitrified microbead insulation mortar, raw materials in parts by weight: 500 parts of cement, 150 parts of fly ash, 150 parts of ash calcium, 400 parts of hollow vitrified microbeads, 5 parts of rubber powder, and 5 parts of cellulose , 5 parts of thickener.

[0034] The cement is Portland cement; the model of the Portland cement is No. 42.5.

[0035] The particle size of the fly ash is 50 mesh, the water content is 5%, the sulfur trioxide content is 1%, and the loss on ignition is 3%.

[0036] The particle size of the gray calcium is 800 mesh.

[0037] The particle size of the hollow vitrified microspheres is 100 mesh, and the bulk density is 40kg / m 3 , The thermal conductivity is 0.1W / m·k.

[0038] The particle size of the rubber powder is 420 μm, the bulk density is 525 kg / m3, the solid content is 99%, and the film-forming temperature is 1°C.

[0039] The cellulose is methyl cellulose.

[0040] The thickener is made by mixing lithium slag, be...

Embodiment 3

[0043] An inorganic hollow vitrified microbead insulation mortar, raw materials in parts by weight: 450 parts of cement, 100 parts of fly ash, 90 parts of ash calcium, 360 parts of hollow vitrified microbeads, 1.5 parts of rubber powder, and 1.5 parts of cellulose , 2.0 parts of thickener.

[0044] The cement is composed of 98% by mass of Portland cement and 2% of magnesium oxychloride cement; preferably, the model of the Portland cement is No. 42.5.

[0045] The particle size of the fly ash is 50 mesh, the water content is 3%, the sulfur trioxide content is 0.8%, and the loss on ignition is 2%.

[0046] The particle size of the gray calcium is 600 mesh.

[0047] The particle size of the hollow vitrified microspheres is 80 mesh, and the bulk density is 30kg / m 3 , The thermal conductivity is 0.08W / m·k.

[0048] The particle size of the rubber powder is 400 μm, the bulk density is 520 kg / m3, the solid content is 99%, and the film-forming temperature is 1°C.

[0049] The cell...

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Abstract

The invention belongs to the technical field of building materials, in particular to inorganic hollow vitrified microbead thermal insulation mortar and a preparation method thereof. The mortar is prepared from cement, fly ash, ash calcium, hollow vitrified micro bubbles, rubber powder, cellulose and a thickening agent. By adjusting the dosage ratio of the components, the mortar has the excellent properties of heat preservation and insulation, fire prevention, freezing prevention and aging resistance, the phenomena of hollowing, falling, pulverization and cracking easily occurring after plastering are avoided, rework is avoided, the product quality is guaranteed, and the mortar has good fineness and operation hand feeling and is good in water retention performance and not prone to bleedingcompared with traditional mortar.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to an inorganic hollow vitrified bead thermal insulation mortar and a preparation method thereof. Background technique [0002] The development of thermal insulation materials can be traced back to primitive society. In order to survive, primitive humans started to use natural caves in nature. With the gradual increase of population and the continuous improvement of productivity, humans learned to use natural materials such as vegetation, animal skins, soil and sand. materials to build houses and live in, and gradually improve the living environment of human beings; so far, people still widely use bricks, sandstone, cement, and concrete prefabricated components to build various buildings on a large scale. A large number of research, development, production and application of new building materials is one of the important components of new building materials. [0003] Bui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B28/32C04B28/04
CPCC04B28/32C04B28/04C04B2111/40C04B2201/20C04B2201/50C04B2201/32C04B7/02C04B18/08C04B14/24C04B24/24C04B24/383C04B18/144C04B14/08C04B14/104C04B14/043C04B38/0067
Inventor 罗昕胡涛吴松邓坚彭德华毛华祥黄章鸿
Owner 贵州建工安顺建筑工程有限公司
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