Dry-mixed mortar thickening agent and preparation method thereof

A technology of dry powder mortar and thickener, applied in the field of building materials, which can solve the problems of unsatisfactory operability, inconvenient use, and poor viscosity of mortar, and achieve the effects of good water reducing effect, convenient production, and low cost

Inactive Publication Date: 2020-05-01
杭州斯曼特建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings about a problem, that is, compared with the mortar prepared on site, the pre-prepared mortar is often less viscous and inconvenient to use, so a thickener is needed to increase its viscosity
However, the current mortar thickeners in the domestic construction market generally have the defects of low strength and serious bleeding, and the actual operability of mortar is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: a kind of dry powder mortar thickener and preparation method thereof, comprises the steps:

[0027] (1) Mix 8 parts of maltodextrin, 10 parts of polyethylene glycol, 30 parts of molasses, and 20 parts of water, and stir to obtain thickener base A.

[0028] (2) Mix 25 parts of carbonyl pyraldehyde, 1 part of sodium lignosulfonate, and 80 parts of water, and stir to obtain thickener base B.

[0029] (3) Take 40 parts of thickener base material A, 35 parts of thickener base material B, 5 parts of hydroxymethyl cellulose and mix evenly, then add 2 parts of sodium hydroxide, adjust the pH to 12-13, and then heat up to 50- 60 degrees, after stirring for 1.5-2 hours, the thickener masterbatch is obtained.

[0030] (4) The thickener masterbatch is subjected to rotary evaporation and drying treatment, and then 10 parts of zeolite powder are added, and after mixing evenly, the finished thickener is obtained.

Embodiment 2

[0032] A dry powder mortar thickener and a preparation method thereof, comprising the steps of:

[0033] (1) Mix 10 parts of maltodextrin, 20 parts of polyethylene glycol, 50 parts of molasses and 25 parts of water, and stir to obtain thickener base A.

[0034] (2) Mix 30 parts of carbonyl pyraldehyde, 3 parts of sodium lignosulfonate, and 75 parts of water, and stir to obtain thickener base B.

[0035] (3) Take 50 parts of thickener base material A and 45 parts of thickener base material B, and mix 3 parts of hydroxymethyl cellulose evenly, then add 3 parts of sodium hydroxide, adjust the pH to 12-13, and then heat up to 50- 60 degrees, after stirring for 1.5-2 hours, the thickener masterbatch is obtained.

[0036] (4) The thickener masterbatch is subjected to rotary evaporation and drying treatment, then 8 parts of zeolite powder are added, and the finished thickener is obtained after mixing evenly.

Embodiment 3

[0038] A dry powder mortar thickener and a preparation method thereof, comprising the steps of:

[0039] (1) Mix 5 parts of maltodextrin, 15 parts of polyethylene glycol, 40 parts of molasses, and 30 parts of water, and stir to obtain thickener base A.

[0040] (2) Mix 25 parts of carbonyl pyraldehyde, 5 parts of sodium lignosulfonate, and 70 parts of water, and stir to obtain thickener base B.

[0041] (3) Take 60 parts of thickener base material A and 55 parts of thickener base material B, mix 3 parts of hydroxymethyl cellulose evenly, then add 5 parts of sodium hydroxide, adjust the pH to 12-13, and then heat up to 50- 60 degrees, after stirring for 1.5-2 hours, the thickener masterbatch is obtained.

[0042] (4) The thickener masterbatch is subjected to rotary evaporation and drying treatment, then 5 parts of zeolite powder are added, and the finished thickener is obtained after mixing evenly.

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PUM

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Abstract

The invention relates to a building material. The invention aims to provide a dry-mixed mortar thickening agent and a preparation method thereof. The dry-mixed mortar thickening agent provided by theinvention has the characteristics of the low cost, the good water reducing effect, the good retarding effect and low air entraining. The preparation method provided by the invention has the characteristics of the simple process and convenience in preparation. According to the technical scheme, the dry-mixed mortar thickening agent is characterized by comprising the following components in parts bymass: 40-60 parts of a thickening agent base material A, 35-55 parts of a thickening agent base material B, 0-5 parts of hydroxymethyl cellulose, and 2-5 parts of sodium hydroxide and 5-10 parts of zeolite powder, wherein the thickening agent base material A comprises maltodextrin, polyethylene glycol and molasses in a mass ratio of (1-2):(2-4):(6-10), and the thickening agent base material B comprises carbonyl pyroaldehyde and sodium lignin sulfonate in a mass ratio of (25-30):(1-5).

Description

technical field [0001] The invention relates to a building material, in particular to a dry powder mortar thickener and a preparation method thereof. Background technique [0002] With the rapid application and development of dry powder mortar in the construction industry, the related preparation technology of dry powder mortar is becoming more and more important. Compared with the traditional dry-mix mortar preparation technology, one of the technical cores of dry-mix mortar is the dry-mix mortar additive, which determines the quality, cost and performance of dry-mix mortar. It can also be said that whether dry powder mortar has market competitiveness depends on the use of dry powder mortar additives. [0003] In recent years, due to the energy crisis and environmental pollution, people's awareness of environmental protection and energy saving has been continuously enhanced. Especially in the field of construction, because of its high energy consumption and wide environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B103/44
CPCC04B40/0039C04B2103/44C04B24/38C04B24/32C04B24/001C04B24/008C04B24/18C04B24/383C04B22/062C04B22/08
Inventor 柳玉强黄遵运
Owner 杭州斯曼特建材科技有限公司
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