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Formaldehyde-removing premixed mortar and preparation method thereof

A technology for ready-mixed mortar and formaldehyde, which is applied to the field of formaldehyde-removing ready-mixed mortar and its preparation, can solve problems such as lack of formaldehyde removal function, and achieve the effect of improving formaldehyde removal effect.

Inactive Publication Date: 2022-03-18
深圳澳达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current mortar lacks the function of removing formaldehyde; therefore, it is of great significance to provide a ready-mixed mortar with the function of removing formaldehyde for the control of formaldehyde content in newly decorated buildings

Method used

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  • Formaldehyde-removing premixed mortar and preparation method thereof
  • Formaldehyde-removing premixed mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 removes formaldehyde ready-mixed mortar

[0038] Composition of formaldehyde-removing ready-mixed mortar raw materials in parts by weight: 30 parts of cement; 65 parts of river sand; 5 parts of formaldehyde-absorbing composition;

[0039] The formaldehyde absorbing composition is composed of a formaldehyde absorbing agent and vermiculite powder in a weight ratio of 1:15;

[0040] The formaldehyde absorbent is a natural formaldehyde absorbent; the natural formaldehyde absorbent is prepared by the following method: take the cactus with a weight ratio of 2:1 and mix it with the leaves of Duckfoot wood, put it into a mixture with a volume ratio of 4:1 In a mixed solvent composed of n-butanol and ether, soak for 5 days at 25°C to obtain a soaking solution; the soaking solution is concentrated and removed to remove the mixed solvent to obtain the natural formaldehyde absorbent; wherein, cactus and japonica leaves The consumption ratio of total weight and mixed s...

Embodiment 2

[0043] Embodiment 2 removes formaldehyde ready-mixed mortar

[0044] Composition of formaldehyde-removing ready-mixed mortar raw materials in parts by weight: 30 parts of cement; 65 parts of river sand; 5 parts of formaldehyde-absorbing composition;

[0045] The formaldehyde absorbing composition is composed of formaldehyde absorbing agent and modified vermiculite powder with a weight ratio of 1:15;

[0046] The formaldehyde absorbent is a natural formaldehyde absorbent; the preparation method of the natural formaldehyde absorbent is the same as in Example 1.

[0047] Described modified vermiculite powder is prepared by the following method:

[0048] Mixing the vermiculite powder with an ethanol solution containing distearoyloxyisopropylaluminate and vinyltriethoxysilane uniformly to obtain a slurry; drying the slurry to obtain the modified vermiculite powder; wherein, The mass fraction of distearoyloxy isopropyl aluminate in ethanol solution is 1%; the mass fraction of viny...

experiment example 1

[0097] Add water and mix the ready-mixed mortar prepared in Examples 1 and 2 and Comparative Examples 1 to 6 respectively, then pour it into a mold with a length of 30 cm, a width of 20 cm, and a thickness of 5 cm to make a cement board; then put the cement board Put it into a transparent airtight container with a length of 1m, a width of 0.5m, and a height of 1m. At the same time, put the formaldehyde tester into the container; inject formaldehyde into the container to make the formaldehyde concentration reach 2.50mg / m 3 ; Record the concentration of formaldehyde in the airtight container after 24 hours, the results are shown in Table 1.

[0098] Table 1. The formaldehyde removal ability test result of ready-mixed mortar of the present invention

[0099]

[0100]

[0101] As can be seen from the experimental data in Table 1, the formaldehyde concentration of the cement board made of the ready-mixed mortar described in Example 1 was reduced to 0.95 mg / m after 24 hours. ...

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Abstract

The invention relates to the technical field of mortar preparation, and particularly discloses formaldehyde-removing premixed mortar and a preparation method thereof. The formaldehyde-removing premixed mortar comprises the following components in parts by weight: 20-30 parts of cement; 50 to 70 parts of river sand; 1-10 parts of a formaldehyde absorbing composition; the formaldehyde absorption composition comprises a formaldehyde absorbent and vermiculite powder. According to the invention, the formaldehyde absorbent and the vermiculite powder are combined for the first time to serve as the formaldehyde absorption composition to be added into the premixed mortar, so that the premixed mortar has an excellent formaldehyde removal function.

Description

technical field [0001] The invention relates to the technical field of mortar preparation, in particular to a formaldehyde-removing ready-mixed mortar and a preparation method thereof. Background technique [0002] Most people know the hazards of formaldehyde, but only a few people know which items may contain formaldehyde. In fact, formaldehyde may be contained in our daily wooden doors, cabinets, wardrobes, sofas, plastic products and other objects. Formaldehyde can remain in objects for up to fifteen years. Formaldehyde will be slowly released from objects, threatening people all the time. health, so it is particularly important to get rid of formaldehyde. [0003] Mortar is made by mixing inorganic cementitious materials with fine aggregate and water in proportion; it is used for masonry and plastering projects, and can be divided into masonry mortar and plastering mortar. The former is used for bricks, stones, blocks, etc. Masonry and component installation; the latte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/02C04B24/00C04B14/20
CPCC04B28/04C04B20/023C04B24/00C04B2111/00025C04B14/068C04B14/202
Inventor 黄恒发陈日云
Owner 深圳澳达新材料有限公司
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