CN103553418B - A kind of premixing mortar water-retention thixotropic agent and preparation method thereof - Google Patents

A kind of premixing mortar water-retention thixotropic agent and preparation method thereof Download PDF

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Publication number
CN103553418B
CN103553418B CN201310459296.9A CN201310459296A CN103553418B CN 103553418 B CN103553418 B CN 103553418B CN 201310459296 A CN201310459296 A CN 201310459296A CN 103553418 B CN103553418 B CN 103553418B
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China
Prior art keywords
thixotropic agent
retention
premixing mortar
mortar water
agent
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Expired - Fee Related
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CN201310459296.9A
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Chinese (zh)
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CN103553418A (en
Inventor
张超
蔡文龙
钱建男
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JIANGSU ZHAOJIA BUILDING MATERIALS TECHNOLOGY CO LTD
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JIANGSU ZHAOJIA BUILDING MATERIALS TECHNOLOGY CO LTD
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Publication of CN103553418A publication Critical patent/CN103553418A/en
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Abstract

The invention discloses a kind of premixing mortar water-retention thixotropic agent and preparation method thereof, each component and mass percent thereof are: ether of cellulose 20-40%, thickening material 10-20%, redispersable latex powder 8-15%, tensio-active agent 0-2%, thixotropic agent 40-50%, the mass percent of each component by regulation is fully mixed in mixer, obtains premixing mortar water-retention thixotropic agent.This premixing mortar water-retention thixotropic agent has the feature of good water-retentivity, cohesiveness, construction smoothness and VOC free, in the middle of handwork mortar and machine sandblasting slurry, can significantly improve operating efficiency and construction quality.

Description

A kind of premixing mortar water-retention thixotropic agent and preparation method thereof
Technical field
The present invention relates to a kind of material of construction, specifically a kind of premixing mortar water-retention thixotropic agent and preparation method thereof, belongs to building material technical field.
Background technology
Along with the popularization of premixing mortar, the demand of grout additive also increases thereupon, and the water-holding agent of current premixing mortar is mainly based on densification powder and ether of cellulose, and the water retentivity of mortar mixing densification powder is poor, intensity is low, and metope hollowing can be caused to ftracture; And there is application property difference, intensity is low, cost is high defect in the mortar mixing merely ether of cellulose.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of premixing mortar water-retention thixotropic agent and preparation method thereof, there is the feature of good water-retentivity, cohesiveness and construction smoothness and VOC free, in the middle of handwork mortar and machine sandblasting slurry, significantly improve operating efficiency and construction quality.
To achieve these goals, the premixing mortar water-retention thixotropic agent that the present invention proposes is with ether of cellulose, thickening material, redispersable latex powder and thixotropic agent for main raw material, and the mass percent of its each component is as follows:
The present invention's ether of cellulose used is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether, and volume accounts for the 20-40% of total amount.
The present invention's thickening material used is starch ethers and properties-correcting agent, described thickening material is starch ethers and properties-correcting agent, its volume is the 7-13% that starch ethers accounts for total amount, properties-correcting agent accounts for the 3-7% of total amount, described starch ethers is one or both in hydroxyalkyl starch, carboxymethyl starch, cationic starch, guar gum ether, and properties-correcting agent is one or both in polyoxyethylene, polyvinyl alcohol.
The present invention's redispersable latex powder used is commercially available rubber powder, composition is one or more in ethene and vinyl acetate copolymer, vinyl acetate and vinyl versatate copolymer, acrylic acid ester copolymer, vinylbenzene and acrylate copolymer rubber powder, and volume accounts for the 8-15% of total amount.
The present invention's surfactant component used is alkyl sulfonates, alkylsurfuric acid salt, fatty acid salt, rosined soap class or triterpenoid saponin etc., and volume accounts for the 0-2% of total amount.
The present invention's thixotropic agent composition used is the layer silicate minerals such as modified alta-mud, montmorillonite or neusilin, accounts for the 40-50% of total amount.
The preparation method of this premixing mortar water-retention thixotropic agent is as follows: take ether of cellulose, thickening material, redispersable latex powder, tensio-active agent and thixotropic agent respectively by massfraction, pour in stirrer and stir, and obtains described premixing mortar water-retention thixotropic agent.
Compared with prior art, this premixing mortar water-retention thixotropic agent and preparation method thereof is is 20-40% ether of cellulose by mass percent, 10-20% thickening material, 8-15% redispersable latex powder, 0-2% tensio-active agent and 40-50% thixotropic agent fully mix and obtain this premixing mortar water-retention thixotropic agent in mixer, it has the feature of good water-retentivity, cohesiveness and construction smoothness and VOC free, in the middle of handwork mortar and machine sandblasting slurry, significantly improve operating efficiency and construction quality.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described.
Embodiment 1:
By water-retention thixotropic agent prepared by the mass percent of upper table regulation, volume accounts for the 0.08-0.12% of formula starting material total mass, adds water after stirring and constructs.0.1% water-retention thixotropic agent of total mass is mixed, water retention 92.4%, 2h denseness rate of loss 20%, 28d ultimate compression strength 7.1MPa in M5 masonry mortar.This proportioning has good construction smoothness, anti-hanging from above property and water-retentivity, effectively controls hollowing cracking phenomena, is applicable to handwork masonry mortar, plastering mortar and terrace mortar.
Embodiment 2:
By water-retention thixotropic agent prepared by the mass percent of upper table regulation, volume accounts for the 0.1-0.12% of formula starting material total mass, adds water after stirring and constructs.0.1% water-retention thixotropic agent of total mass is mixed, water retention 94.3%, 2h denseness rate of loss 16%, 28d ultimate compression strength 13.4MPa in M10 machine spray plastering mortar.Mortar prepared by this proportioning has lower air content, obviously can improve " gas blocks up " phenomenon in machine spray process, there is good construction smoothness, anti-hanging from above property and water-retentivity simultaneously, effectively control hollowing cracking phenomena, be applicable to machine spray operation plastering mortar and terrace mortar.
Embodiment 3:
By water-retention thixotropic agent prepared by the mass percent of upper table regulation, volume accounts for the 0.08-0.12% of formula starting material total mass, adds water after stirring and constructs.0.1% water-retention thixotropic agent of total mass is mixed, water retention 93.0%, 2h denseness rate of loss 18%, 28d ultimate compression strength 6.4MPa in M5 masonry mortar.This proportioning has good construction smoothness, anti-hanging from above property and water-retentivity, effectively controls hollowing cracking phenomena, is applicable to handwork masonry mortar, plastering mortar and terrace mortar.
The dry-mix water retention of current employing densification powder can reach 88% reluctantly, application property is poor, and easily there is bleeding, hollowing cracking phenomena, and the premixing mortar water-retention thixotropic agent in the present invention has the feature of good water-retentivity, cohesiveness and construction smoothness and VOC free, in the middle of handwork mortar and machine sandblasting slurry, significantly improve operating efficiency and construction quality.

Claims (7)

1. a premixing mortar water-retention thixotropic agent, is characterized in that, the mass percent of raw material contained by it and feed components is as follows:
Described ether of cellulose is hydroxypropyl methyl cellulose ether or ethoxyl methyl cellulose ether.
2. a kind of premixing mortar water-retention thixotropic agent according to claim 1, is characterized in that, described thickening material is starch ethers and properties-correcting agent, and its volume is the 7-13% that starch ethers accounts for total amount, and properties-correcting agent accounts for the 3-7% of total amount.
3. a kind of premixing mortar water-retention thixotropic agent according to claim 1, it is characterized in that, described redispersable latex powder is one or more in ethene and vinyl acetate copolymer, vinyl acetate and vinyl versatate copolymer, acrylic acid ester copolymer, vinylbenzene and acrylate copolymer rubber powder.
4. a kind of premixing mortar water-retention thixotropic agent according to claim 1, is characterized in that, described tensio-active agent is alkyl sulfonates, alkylsurfuric acid salt, fatty acid salt or rosined soap class.
5. a kind of premixing mortar water-retention thixotropic agent according to claim 1, is characterized in that, the composition of described thixotropic agent is the layer silicate mineral of modified alta-mud, montmorillonite or neusilin.
6. a kind of premixing mortar water-retention thixotropic agent according to claim 2, is characterized in that, described starch ethers is one or both in hydroxyalkyl starch, carboxymethyl starch, cationic starch, guar gum ether; Properties-correcting agent is one or both in polyoxyethylene, polyvinyl alcohol.
7. prepare the method for the premixing mortar water-retention thixotropic agent described in claim 1 to 6 any one for one kind, it is characterized in that, ether of cellulose, thickening material, redispersable latex powder, tensio-active agent and thixotropic agent is taken respectively by massfraction, pour in stirrer and stir, obtain described premixing mortar water-retention thixotropic agent.
CN201310459296.9A 2013-09-27 2013-09-27 A kind of premixing mortar water-retention thixotropic agent and preparation method thereof Expired - Fee Related CN103553418B (en)

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CN103922634B (en) * 2014-03-25 2016-04-13 华南理工大学 A kind of sand-cement slurry toughener
CN105669076B (en) * 2016-01-15 2018-11-06 中国铁道科学研究院铁道建筑研究所 A kind of unballasted track bed plate concrete thixotropic agent
CN106045373A (en) * 2016-06-02 2016-10-26 石家庄市长安育才建材有限公司 Dry-mixed mortar water retention thickener and preparation method thereof
CN106082771B (en) * 2016-06-24 2018-08-14 桂林华越环保科技有限公司 Concrete water-retaining agent
CN106116225A (en) * 2016-06-24 2016-11-16 桂林华越环保科技有限公司 A kind of concrete water-retaining agent
CN107141875A (en) * 2017-05-04 2017-09-08 明光市飞洲新材料有限公司 A kind of preparation method of suspension thixotropic agent
CN108675671B (en) * 2018-06-12 2021-05-25 中铁四局集团有限公司 Special thixotropic agent for 3D printing concrete
CN108715531B (en) * 2018-06-12 2020-08-28 中铁四局集团有限公司 High-thixotropy 3D printing concrete and preparation method thereof
CN108863274B (en) * 2018-08-20 2021-03-30 重庆绿恒环保科技有限公司 Surface layer self-leveling mortar with conductive function
CN108911571A (en) * 2018-08-27 2018-11-30 四川聚力建材科技有限公司 A kind of additional agent prescription and preparation method for Machine-blasting mortar
CN109704610A (en) * 2019-01-28 2019-05-03 江苏奔拓电气科技有限公司 A kind of preparation method of high temperature resistant thixotropic agent
CN109721277A (en) * 2019-02-01 2019-05-07 湖州盛世华骏新型材料有限公司 A kind of multifunctional assistant and preparation method thereof haveing excellent performance
CN110606693A (en) * 2019-10-28 2019-12-24 宁波新广亿建材有限公司 Thickening powder for dry-mixed mortar and preparation method thereof
CN111003995A (en) * 2019-12-17 2020-04-14 北京建工新型建材有限责任公司 Reinforced flexible plastering anti-crack mortar
CN110818361A (en) * 2019-12-17 2020-02-21 北京建工新型建材有限责任公司 Machine-sprayed thick-layer polymer repair mortar
CN111233368A (en) * 2020-02-14 2020-06-05 西南科技大学 Lubricant for plastering gypsum, preparation method of lubricant and plastering gypsum

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CN102674773A (en) * 2012-05-21 2012-09-19 张立功 Preparation method, products and construction method of improved adhesive for ceramic tiles

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