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Modified hydroxypropyl methyl cellulose ether dry powder material

A technology of hydroxypropyl methylcellulose and hydroxypropyl starch ether, which is applied in the field of modified hydroxypropyl methylcellulose ether dry powder, can solve the problems of poor water retention rate of mortar, pulverization of mortar surface, and poor strength , to achieve the effect of high early strength, high water retention rate, and no chalking

Inactive Publication Date: 2020-01-07
南京钧正新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, as the country vigorously promotes building energy conservation, there have been a lot of quality problems in the external wall insulation system of the plastering mortar processed by traditional hydroxypropyl methylcellulose ether, especially the poor water retention rate of the mortar and the slow hydration reaction. Adequate, leading to poor early strength, serious phenomenon such as mortar surface pulverization and cracking

Method used

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  • Modified hydroxypropyl methyl cellulose ether dry powder material
  • Modified hydroxypropyl methyl cellulose ether dry powder material
  • Modified hydroxypropyl methyl cellulose ether dry powder material

Examples

Experimental program
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Effect test

Embodiment 1

[0020] A modified hydroxypropyl methylcellulose ether dry material comprises the following components:

[0021] 865kg of hydroxypropyl methylcellulose ether, 67kg of polyvinyl alcohol, 20kg of anionic polyacrylamide, 19kg of white carbon black, 15kg of polycarboxylate superplasticizer, and 14kg of hydroxypropyl starch ether.

[0022] Put all the materials into a V-shaped three-dimensional mixer, and after fully stirring for 90 minutes, take 3kg of modified hydroxypropyl methylcellulose ether dry material for later use.

[0023] Making standard dry powder mortar:

[0024] 42.5# ordinary Portland cement 350kg; 40-70 mesh quartz sand 615kg, 3-6mm polypropylene short fiber 2kg; redispersible latex powder 30kg, modified hydroxypropyl methyl cellulose ether dry material 3kg, put Put it into the mortar mixer and mix it fully for 30 minutes, and make it into a standard dry powder mortar, that is, dry powder mortar for external wall insulation and plastering.

[0025] Add 210-230kg o...

Embodiment 2

[0029] A modified hydroxypropyl methylcellulose ether dry material should include the following components:

[0030] 875kg of hydroxypropyl methylcellulose ether, 65kg of polyvinyl alcohol, 17kg of anionic polyacrylamide, 18kg of white carbon black, 12kg of polycarboxylate superplasticizer, and 13kg of hydroxypropyl starch ether.

[0031] Put all the materials into a V-shaped three-dimensional mixer, and after fully stirring for 90 minutes, take 3kg of modified hydroxypropyl methylcellulose ether dry material for later use.

[0032] Making standard dry powder mortar:

[0033] 42.5# ordinary Portland cement 350kg; 40-70 mesh quartz sand 615kg, 3-6mm polypropylene short fiber 2kg; redispersible latex powder 30kg, modified hydroxypropyl methyl cellulose ether dry material 3kg, put Put it into the mortar mixer and mix it fully for 30 minutes, and make it into a standard dry powder mortar, that is, dry powder mortar for external wall insulation and plastering.

[0034] Add 210-23...

Embodiment 3

[0038] A modified hydroxypropyl methylcellulose ether dry material should include the following components:

[0039] 886kg of hydroxypropyl methylcellulose ether, 61kg of polyvinyl alcohol, 16kg of anionic polyacrylamide, 17kg of white carbon black, 10kg of polycarboxylate superplasticizer, and 10kg of hydroxypropyl starch ether.

[0040] Put all the materials into a V-shaped three-dimensional mixer, and after fully stirring for 90 minutes, take 3kg of modified hydroxypropyl methylcellulose ether dry material for later use.

[0041] Making standard dry powder mortar:

[0042] 42.5# ordinary Portland cement 350kg; 40-70 mesh quartz sand 615kg, 3-6mm polypropylene short fiber 2kg; redispersible latex powder 30kg, modified hydroxypropyl methyl cellulose ether dry material 3kg, put Put it into the mortar mixer and mix it fully for 30 minutes, and make it into a standard dry powder mortar, that is, dry powder mortar for external wall insulation and plastering.

[0043] Add 210-23...

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Abstract

The invention relates to a modified hydroxypropyl methyl cellulose ether dry powder material, which comprises, by weight, 870-940 parts of hydroxypropyl methyl cellulose ether, 38-70 parts of polyvinyl alcohol, 10-23 parts of polyacrylamide, 10-20 parts of white carbon black, 5-18 parts of a polycarboxylic acid water reducing agent and 5-15 parts of hydroxypropyl starch ether. Compared with the traditional hydroxypropyl methyl cellulose ether, the exterior wall external thermal insulation plastering mortar prepared from the modified hydroxypropyl methyl cellulose ether dry material of the invention has the advantages of high water retention rate, high early strength, no powdering phenomenon and no cracking.

Description

technical field [0001] The invention relates to a modified hydroxypropyl methyl cellulose ether dry powder for mortar, in particular to a modified hydroxypropyl methyl cellulose ether dry powder for external wall thermal insulation plastering mortar. Background technique [0002] In recent years, as the country vigorously promotes building energy conservation, there have been a lot of quality problems in the external wall insulation system of the plastering mortar processed by traditional hydroxypropyl methylcellulose ether, especially the poor water retention rate of the mortar and the slow hydration reaction. Adequate, resulting in poor early strength, mortar surface pulverization and cracking and other serious phenomena. The plastering mortar processed with modified hydroxypropyl methylcellulose ether can obviously improve the above quality problems. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies in the prior art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B28/04C04B103/46
CPCC04B28/04C04B40/0039C04B2103/46C04B24/383C04B24/2623C04B24/2652C04B22/06C04B2103/302C04B24/38C04B14/06C04B16/0633C04B2103/0057
Inventor 王正权孙卉王秀凤
Owner 南京钧正新材料有限公司
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