Dry-mixed plastering mortar and preparation method thereof

A plastering mortar and dry mixing technology, applied in the field of plastering mortar, can solve the problems of surface cracking, peeling off, poor thermal conductivity and bonding strength of mortar, and improve impermeability, prevent cracking and other problems. Falling off, good waterproof effect

Inactive Publication Date: 2020-06-19
北京海普斯建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this dry powder mortar is that the thermal conductivity and bonding strength of the mortar are poor, and the temperature stress will be caused by the inconsistency of internal and external temperatures during the hardening process, resulting in large-area cracking and peeling off on the surface of the wall plastering layer.

Method used

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  • Dry-mixed plastering mortar and preparation method thereof
  • Dry-mixed plastering mortar and preparation method thereof
  • Dry-mixed plastering mortar and preparation method thereof

Examples

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Effect test

preparation example 1-3

[0034] In the preparation example 1-3, graphene is selected from Zhengzhou Yaoshun Chemical Co., Ltd., whose article number is 1005 graphene, and polypropylene fiber is selected from the polypropylene fiber of JBX008 sold by Yibo Chemical Co., Ltd. in Dacheng County, silicon carbide Selected from DFBT-T type silicon carbide micropowder sold by Dengfeng Baotong Refractory Co., Ltd., fatty acid sodium selected from JH type fatty acid sodium sold by Ningbo Jiahe New Material Technology Co., Ltd., styrene and butadiene copolymerized rubber powder selected from Shijiazhuang Xinyuan Cellulose Co., Ltd. sells SBR type redispersible latex powder.

preparation example 1

[0035] Preparation example 1: according to the proportioning in table 1, 5kg graphene and 10kg silicon carbide are stirred 5min under the rotating speed of 500r / min, after adding 30kg mass fraction is the ethanol of 90%, grind 5min, to particle diameter, be 2mm, Then dry at 50°C for 5 minutes, and then mix evenly with 10kg modified starch ether, 5kg polypropylene fiber, 10kg fatty acid salt, 10kg styrene and butadiene copolymerized rubber powder to prepare an admixture, in which modified starch ether It is etherified modified starch S301, the diameter of polypropylene fiber is 10 μm, the length is 2 mm, and the fatty acid salt is sodium fatty acid.

[0036] The raw material ratio of admixture in table 1 preparation example 1-3

[0037]

preparation example 2

[0038] Preparation Example 2: According to the proportioning in Table 1, 8kg of graphene and 15kg of silicon carbide were stirred at a speed of 550r / min for 8min, and after adding 35kg of ethanol with a mass fraction of 93%, they were ground for 8min until the particle size was 2.3mm , and then dried at 55°C for 8 minutes, and then mixed evenly with 15kg modified starch ether, 8kg polypropylene fiber, 13kg fatty acid salt, 15kg styrene and butadiene copolymerized rubber powder to prepare an admixture, in which modified starch The ether is modified starch ether SB250, the diameter of the polypropylene fiber is 20 μm, and the length is 6 mm, and the fatty acid salt is sodium fatty acid.

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Abstract

The invention discloses dry-mixed plastering mortar and a preparation method thereof. The dry-mixed plastering mortar is prepared from the following components in parts by weight: 150 to 190 parts ofcement, 10 to 30 parts of fly ash, 100 to 140 parts of machine-made coarse sand, 370 to 390 parts of machine-made fine sand, 280 to 320 parts of river sand and 10 to 20 parts of an admixture. The preparation method comprises the following steps: drying river sand until the water content is lower than 0.5%, uniformly mixing the river sand, cement, fly ash, gypsum, machine-made coarse sand and machine-made fine sand, baking at 30-40 DEG C for 60-70 minutes, grinding for 10-20 minutes, finally adding an air entraining agent, a water reducing agent and an admixture, and uniformly mixing to obtainthe dry-mixed plastering mortar. The dry-mixed plastering mortar disclosed by the invention has the advantages of high bonding strength and good heat-conducting property; the preparation method disclosed by the invention has the advantages of simple steps and strong operability; and the prepared dry-mixed plastering mortar has the advantages of high bonding strength and good heat-conducting property.

Description

technical field [0001] The invention relates to the technical field of plastering mortar, in particular to a dry-mixed plastering mortar and a preparation method thereof. Background technique [0002] With the continuous advancement of the reform of building wall materials in my country, a large number of new wall materials have been widely used, and a wall material structure system dominated by wall blocks has been formed. The wall block has strong water absorption and large shrinkage, and the mixing water in the mortar is quickly absorbed by the wall material, while the traditional plastering mortar has poor construction performance, water retention, low bonding strength, cracking, and powder loss. And other problems will seriously affect the quality of the building, so the traditional plastering mortar can no longer meet the existing wall plastering construction requirements. [0003] In the prior art, the Chinese invention patent application document with the applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/00508C04B2201/32C04B2201/50C04B14/06C04B18/08C04B18/064C04B14/024C04B14/324C04B16/0633C04B24/026C04B24/26C04B24/04C04B24/38C04B2103/302C04B2103/304
Inventor 韩国柱卫长顺张立君
Owner 北京海普斯建材有限公司
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