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Dry surface-mortar additive material and preparation method thereof

A technology of plastering mortar and additives, which is applied in the field of architectural coatings and can solve the problems of poor waterproof and antifreeze performance and low bonding strength of plastering mortar

Inactive Publication Date: 2017-03-08
NANJING SUBAO ENERGY SAVING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a dry plastering mortar additive and its preparation method to solve the problems of low bonding strength and poor waterproof and antifreeze properties of existing plastering mortars

Method used

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  • Dry surface-mortar additive material and preparation method thereof
  • Dry surface-mortar additive material and preparation method thereof
  • Dry surface-mortar additive material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the present invention provides a dry mortar additive dry material, which comprises the following components: 2 kg of hydroxypropyl methylcellulose with a viscosity of 80,000 to 120,000, redispersible latex powder 10kg, 0.3kg for silicone water repellent, 0.5kg for starch ether, 0.5kg for calcium formate, 1kg for polycarboxylate superplasticizer with polyester structure, 2kg for polyvinyl alcohol 2488, and 2kg for modified wood fiber 2kg, the modified PVAC is 2kg. When preparing the dry material of the plastering mortar additive, a variable speed mixer is used for variable speed mixing. First, the modified wood fiber and the polycarboxylate water reducer are stirred at high speed for 3 minutes, and then the silicone water-repellent is added. After stirring at a medium speed for 3 minutes, finally add hydroxypropyl methylcellulose, redispersible latex powder, starch ether, calcium formate, polyvinyl alcohol, and modified PVAC and stir at a low s...

Embodiment 2

[0022] The invention provides a dry plastering mortar additive, which comprises the following components: 3 kg of hydroxypropyl methylcellulose with a viscosity of 80,000 to 120,000, 20 kg of redispersible latex powder, 0.5kg for silicone water repellent, 1.0kg for starch ether, 1.0kg for calcium formate, 2kg for polycarboxylate superplasticizer with polyester structure, 4kg for polyvinyl alcohol 2488, and 1.8kg for modified wood fiber , the modified PVAC is 2kg. When preparing the dry material of the plastering mortar additive, a variable speed mixer is used for variable speed stirring. First, the modified wood fiber and the polycarboxylate water reducer are stirred at high speed for 3 minutes, and then the organic silicon water repellent is added. After stirring at a medium speed for 3 minutes, finally add hydroxypropyl methylcellulose, redispersible latex powder, starch ether, calcium formate, polyvinyl alcohol, and modified PVAC and stir at a low speed for 6 minutes to prep...

Embodiment 3

[0027] The invention provides a dry mortar additive material, which comprises the following components: 2.5 kg of hydroxypropyl methylcellulose with a viscosity of 80,000 to 120,000, and 15 kg of redispersible latex powder , 0.4kg for silicone water repellent, 0.7kg for starch ether, 0.8kg for calcium formate, 1.5kg for polycarboxylate water reducer with polyester structure, 3kg for polyvinyl alcohol 2488, and 2.2kg for modified wood fiber kg, the modified PVAC is 2kg. When preparing the dry material of the plastering mortar additive, a variable speed mixer is used for variable speed stirring. First, the modified wood fiber and the polycarboxylate water reducer are stirred at high speed for 3 minutes, and then the organic silicon hydrophobic After stirring at a medium speed for 3 minutes, finally add hydroxypropyl methylcellulose, redispersible latex powder, starch ether, calcium formate, polyvinyl alcohol, and modified PVAC and stir at a low speed for 6 minutes to prepare the ...

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Abstract

The invention discloses a dry surface-mortar additive material. The dry surface-mortar additive material is characterized by being prepared from, by weight, 10-15 parts of hydroxypropyl methyl cellulose being 80-120 thousand in silicic acid viscosity, 50-70 parts of redispersible emulsion powder, 2-5 parts of an organic silicon water repellent, 2-5 parts of starch ether, 2-5 parts of calcium formate, 5-10 parts of polycarboxylate superplasticizer, 10-20 parts of polyvinyl alcohol, 5-10 parts of modified lignocelluloses and 5-10 parts of modified PVAC (polyvinyl acetate). Surface mortar prepared from the surface-mortar additive is firm in adhesion with boards, high in flexibility, crack resistance and impact resistance and great in waterproof performance and alkali efflorescence resistance. In addition, convenience in construction, high sagging resistance, smoothness in batch scraping, freeness of stickiness to blades, easiness in mortar collection and high mortar utilization rate are realized.

Description

technical field [0001] The invention relates to a coating for building, in particular to a dry mortar additive and a preparation method thereof. Background technique [0002] In recent years, with the development of my country's construction technology, the performance requirements of the external wall are getting higher and higher. Therefore, the waterproof, fireproof and appearance requirements of building materials are also getting higher and higher. The existing mortar is composed of Portland cement, secondary powder Coal ash, quartz sand, and polypropylene fiber are mixed with water. Its bonding strength is low, and its waterproof and antifreeze properties are poor. Back to alkali or even shedding phenomenon. In view of the above-mentioned defects, it is necessary to design a dry plastering mortar additive and a preparation method thereof. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a dry plastering mort...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B28/04
CPCC04B40/0042C04B28/04C04B2201/50
Inventor 王正权孙卉
Owner NANJING SUBAO ENERGY SAVING TECH
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