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Novel mortar additive and preparation method thereof

A mortar additive and additive technology, applied in the field of mortar additives, can solve the problems of dry-mixed mortar workability, mechanical properties, storage, durability, uneven quality, poor workability, etc. Strength, low cost, smooth surface effect

Inactive Publication Date: 2020-05-05
海南瑞宸新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many varieties of mortar, and the quality is also uneven. Some have low strength, poor cohesive force, some have high bulk density, some have high hygroscopicity, and are prone to cracking and hollowing after construction, and some have poor thermal insulation or poor construction. Good quality has become a common problem of mortar quality, and the key to the development of dry-mixed ready-mixed mortar is the research and development of additives. On the one hand, the current production of dry-mixed ready-mixed mortar only considers a certain performance of dry-mixed ready-mixed mortar, and there is no comprehensive Consider the construction, mechanical properties, storage and durability of dry-mixed mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A new type of mortar additive, the additive includes the following raw materials by weight: 0.2 parts of penetrating agent, 3 parts of dispersant, 3 parts of cellulose, 3 parts of powdery defoamer, 0.2 part of viscosity modifier, 0.5 part of lubricant , enhancer 2 parts.

[0025] The penetrating agent is a fluorocarbon low surface tension surfactant; the fluorocarbon low surface tension surfactant is one or more of Tivida FL 2300, Tivida FL 2500, and FS-3100.

[0026] The dispersant is a mixture of polyvinylpyrrolidone and maleic anhydride-acrylic acid copolymer sodium salt.

[0027] The cellulose is hydroxypropyl methylcellulose ether HPMC.

[0028] As an improvement, the powdery defoamer is AGITAN P849, P8850.

[0029] As an improvement, the viscosity regulator is hydroxypropyltrimethylammonium chloride and starch ether.

[0030] As an improvement, the lubricant is one or more combinations of sodium bentonite, thixotropic enzyme, fumed silica, and polyamide wax

...

Embodiment 2

[0040] A new type of mortar additive, the additive includes the following raw materials by weight: 0.8 parts of penetrating agent, 7 parts of dispersant, 7 parts of cellulose, 9 parts of powdery defoamer, 0.8 parts of viscosity modifier, and 1.5 parts of lubricant , 6 parts of enhancer.

[0041] The penetrating agent is a combination of fluorocarbon low surface tension surfactant and silicone low surface tension surfactant; the fluorocarbon low surface tension surfactant is more than Tivida FL 2300 and Tivida FL 2500 ; Organosilicon low surface tension surfactants are BYK-347, TEGO 5840 kinds.

[0042] The dispersant is a mixture of polyvinylpyrrolidone, sodium salt of maleic anhydride-acrylic acid copolymer, sodium salt of hydrolyzed polymaleic acid, and sodium salt of acrylic acid-hydroxypropyl acrylate copolymer.

[0043] The cellulose is hydroxypropyl methylcellulose ether HPMC.

[0044] As an improvement, the powdery defoamer is AGITAN P849, P8850.

[0045] As an impro...

Embodiment 3

[0056]A new type of mortar additive, the additive includes the following raw materials by weight: 0.5 parts of penetrating agent, 5 parts of dispersant, 5 parts of cellulose, 6 parts of powdery defoamer, 0.5 parts of viscosity regulator, and 1 part of lubricant , 4 parts of enhancer.

[0057] The penetrating agent is a combination of a fluorocarbon low surface tension surfactant and a silicone low surface tension surfactant; the fluorocarbon low surface tension surfactant is Tivida FL 2300, Tivida FL 2500, FS -More than 3,100 kinds; silicone-based low surface tension surfactants include BYK-347, TEGO 5840, and Silok Wet 8008.

[0058] The dispersant is a mixture of polyvinylpyrrolidone, sodium salt of maleic anhydride-acrylic acid copolymer, sodium salt of hydrolyzed polymaleic acid, and sodium salt of acrylic acid-hydroxypropyl acrylate copolymer.

[0059] The cellulose is hydroxypropyl methylcellulose ether HPMC.

[0060] As an improvement, the viscosity regulator is hydro...

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PUM

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Abstract

The invention relates to a novel mortar additive and a preparation method thereof. The additive is prepared from the following raw materials (by weight): 0.2 to 0.8 part of a penetrating agent, 3 to 7parts of a dispersing agent, 3 to 7 parts of cellulose, 3 to 6 parts of a powdery defoaming agent and 0.2 to 0.8 part of a viscosity regulator. The preparation method is simple, low in cost and suitable for being popularized and used in large-area terrace projects such as supermarkets and shopping malls.

Description

technical field [0001] The invention relates to the technical field of mortar additives, in particular to a novel mortar additive and a preparation method thereof. Background technique [0002] At present, there are mainly two types of mortar used in construction projects: one is self-mixed mortar on site, which has poor measurement accuracy and unstable quality, and is likely to cause quality accidents such as hollows and cracks; the other is encouraged and supported by national policies. The industrially produced dry-mixed ready-mixed mortar has the advantages of accurate measurement, stable quality, waste utilization and environmental protection. Therefore, building dry-mixed ready-mixed mortar, as a new type of green building material, has been widely used in our country, especially in cities, the mortar configured on site is basically no longer used, and dry-mixed ready-mixed mortar has been widely used. There is no need for manual stirring during the process, which no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38
CPCC04B40/0039C04B2103/40C04B2103/408C04B24/383C04B2103/50C04B24/121C04B24/38C04B14/104C04B24/14C04B14/064C04B24/287C04B24/18C04B24/16C04B24/04C04B22/147C04B24/32
Inventor 柴兆全
Owner 海南瑞宸新型建材有限公司
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