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Powder binder

A binder and powder technology, applied in the direction of binder type, monocarboxylic acid ester copolymer binder, etc., can solve the problem of high dosage, high price of powder binder, and limited promotion of powder binder. and other problems to achieve the effect of facilitating quality control

Inactive Publication Date: 2005-01-12
JILIN KELONG BUILDING ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one of the main components in the powdery binder - the dispersible polymer content is as high as more than 6%, as a result, the price of the powdery binder is high, thus limiting the powdery binder in the prior art Promotion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Take 3% (based on the total weight of the powdery binder, the same below) of vinyl acetate-ethylene copolymer powder with a fineness of 400 μm, 35% of 425# Portland cement, and 1.5% of 100% digested Slaked lime, 0.2% hydroxypropyl cellulose ether, 0.23% wood calcium, 12% 30-50 mesh fineness quartz sand, 48% 50-100 mesh quartz sand, 0.05% Agitan type solid defoamer and 0.02 % of GG-02 Witt brand nano-grade zinc oxide is formulated into a powdery binder.

[0068]Mix the above-mentioned powdery binder with 20% (based on the total amount of the binder) of water to form a slurry. The bonding strength of the alkali glass mesh cloth has reached the local standard of Jilin Province (DG22 / T278-2001J10092), and there is no cracking at the bonding place after observation.

Embodiment 2

[0070] Take vinyl acetate-vinyl tertiary carbonate copolymer powder (fineness 400μm) 3%, 525# white cement 35%, methyl cellulose ether 0.2%, naphthalene sodium sulfonate 0.22%, fineness 30-50 mesh dry Quartz sand 12%, 50-100 mesh dry quartz sand 40%, 10-20 mesh dry quartz sand, 6.5%, Agitan type solid defoamer 0.05%, GG-02 Witt brand nano zinc oxide 0.03% and 3% Titanium dioxide is formulated into a powdery binder.

[0071] Add 20% (standard as above) water to the above-mentioned powdery binder to adjust it into a slurry, and use the slurry as the surface decoration material for the external thermal insulation protective layer of the building exterior wall, and it is combined with the protective layer, the base surface and the surface of the protective layer. The bonding strength of the alkali-resistant glass mesh cloth has reached the local standard of Jilin Province. No cracking has been found at the bonding point through field observation, and the plastered surface is smoot...

Embodiment 3

[0073] Take 3.5% of 400μm vinyl acetate-ethylene copolymer powder, 38% of 425# sulfoaluminate cement, 0.23% of methyl cellulose ether, 0.2% of wood calcium, 30-50 mesh fineness of dry quartz 13% sand, 45% dry quartz sand with 50-100 mesh fineness, 0.05% Agitan type solid defoamer and 0.02% GG-02 Witt brand nano-grade zinc oxide are formulated into powdery binder.

[0074] Add 20% (same as above) water to the powdery binder to make a slurry. This slurry was used for the exterior wall of the building, constructed at a temperature above 0°C and maintained at a temperature above -10°C for more than 15 days. The bonding strength has reached the local standard of Jilin Province, and there is no cracking, pulverization and bubbling caused by low temperature curing, and the plastered surface is smooth and smooth without smearing marks.

[0075] The powder binder of the present invention is convenient to carry out strict quality control because it is pre-prepared in the factory; throu...

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PUM

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Abstract

A powdered adhesive is disclosed, which features that the content of redispersive polymer is lower (2.5-4.5%), resulting in low cost. Its advantages are controllable preparing process, high adhesion and low cost.

Description

technical field [0001] The invention relates to a powdery binder, in particular to a powdery binder used in an external thermal insulation system of an EPS board wall. Background technique [0002] Traditional exterior wall adhesives are mostly liquid adhesives. This adhesive is formulated at the construction site. When preparing the binder on site, the added cement and sand may be inaccurately weighed, which may cause the ratio of the binder to deviate from the specification; The performance of the adhesive becomes worse; in addition, the liquid adhesive may be frozen during construction in low temperature seasons. [0003] The powdery binder can eliminate the above disadvantages of the liquid binder, and can further improve the appearance quality of the plastered surface, shorten the construction period, and eliminate the problem of alkali return. However, one of the main components in the powdery binder - the dispersible polymer content is as high as more than 6%, as a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J131/04
Inventor 张海文
Owner JILIN KELONG BUILDING ENERGY SAVING TECH