Magnesium oxychloride cement coating for exterior walls and preparation method of coating

A technology for magnesium oxychloride cement and exterior wall coatings, applied in the field of coatings, can solve the problems of wasting manpower, material and financial resources, difficult construction, peeling off into pieces, etc., and achieves the effects of convenient construction and operation, good fire resistance and good cold resistance.

Active Publication Date: 2015-03-25
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] There are many exterior wall coating materials and technologies, but there are also many problems, such as drumming, cracking, and peeling off. Once the above problems occur, it is difficult to repair and maintain. It is relatively complicated, and at the same time it wastes a lot of manpower, material and financial resources, so it is difficult to promote in the vast agricultural and pastoral areas

Method used

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  • Magnesium oxychloride cement coating for exterior walls and preparation method of coating

Examples

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Embodiment 1

[0020] The magnesium oxychloride cement exterior wall coating of the present embodiment comprises multiple components, and every kind of component adds and mixes according to mass ratio, and the step of this magnesium oxychloride cement exterior wall coating comprises the steps:

[0021] A. combined figure 1 As shown, 100 parts of lightly burnt powder, 8 parts of fly ash, 60 parts of straw, and 55 parts of sand and soil mixture are stirred and mixed to form a base material. Wherein, the length of the straw is crushed to less than 0.5 cm; the sand-soil mixture is formed by mixing sand and soil at a mass ratio of 4.5:1.

[0022] B. Add 180 parts of magnesium chloride aqueous solution with a mass fraction of 23 to the base material, and stir again to form a coating on the outer wall.

[0023] Apply the coating obtained in this example to the surface of the exterior wall with a coating thickness of 5 mm. After curing for a period of time and after the water evaporates and dries u...

Embodiment 2

[0025] The difference between this embodiment and embodiment 1 is the proportional relationship between the components,

[0026] In this embodiment, 100 parts of lightly burned powder, 18 parts of fly ash, 30 parts of straw, and 70 parts of sand and soil mixture are mixed to form a base material, and then 130 parts of magnesium chloride aqueous solution with a mass fraction of 20 are added and mixed evenly again. Get paint. Other steps are described with reference to embodiment 1.

[0027] Wherein, the sand-soil mixture is formed by mixing sand and soil at a mass ratio of 2:5; of course, in other embodiments, the straw can also be replaced by sawdust, and the fly ash can also be replaced by silica fume. It is better to control the mass ratio of the lightly burnt powder, fly ash or silica fume, straw or sawdust, sandy soil mixture, and magnesium chloride aqueous solution within the range of 100:8-18:30-60:55-70:130-180.

[0028] Apply the paint obtained in this example to the...

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Abstract

The invention relates to the technical field of coatings, in particular to a preparation method of a magnesium oxychloride cement coating for exterior walls. The method comprises steps as follows: evenly mixing light-burned powder, fly ash or silica fume, straw or sawdust as well as a sand and soil mixture in the mass ratio of 100:(5-20):(10-70):(20-110) to form a base material; adding a magnesium chloride aqueous solution with the mass percent ranging from 20 to 25 to the base material, and evenly mixing the mixture to form the coating for coating the exterior walls, wherein the mass ratio of the light-burned powder to the magnesium chloride aqueous solution is in a range of 1:(1-2.6). The coating for the exterior walls is good in fireproof performance, good in cold resistance, simple in process, convenient to construct and operate, low in cost and quite suitable for popularization and application in northwest regions and has a certain thermal insulation effect.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an exterior wall coating and a preparation method thereof. Background technique [0002] There are many exterior wall coating materials and technologies, but there are also many problems, such as drumming, cracking, and peeling off. Once the above problems occur, it is difficult to repair and maintain. It is relatively complicated, and it also wastes a lot of manpower, material and financial resources, so it is relatively difficult to promote in vast agricultural and pastoral areas. [0003] With the needs of new rural construction, while focusing on the development of rural economy, improving the living conditions of farmers and herdsmen is also an issue that cannot be ignored. Especially in the northwest region, where the natural conditions are relatively harsh, there is an urgent need for housing insulation. However, the performance requirements of coatings in harsh environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B18/26
CPCY02W30/91
Inventor 常成功郑卫新肖学英董金美文静李颖
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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