Multipolymer emulsion, preparation method thereof, and cement mortar prepared from multipolymer emulsion

A technology of polymer emulsion and polymer, which is applied in the field of preparation of multi-component polymer emulsion, can solve the problems such as poor waterproof performance of mortar, and achieve the effect of improving compactness and workability

Inactive Publication Date: 2009-12-02
爱福家居(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned defects, the technical problem to be solved in the present invention is to provide a method for preparing a multi-component polymer emulsion for the poor waterproof performance of mortar made from the existing styrene-acrylic polymer emulsion

Method used

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  • Multipolymer emulsion, preparation method thereof, and cement mortar prepared from multipolymer emulsion
  • Multipolymer emulsion, preparation method thereof, and cement mortar prepared from multipolymer emulsion
  • Multipolymer emulsion, preparation method thereof, and cement mortar prepared from multipolymer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. The raw material formula of multi-component polymer emulsion is as follows:

[0021]

[0022] Two. the preparation method of multiple polymer emulsion is as follows:

[0023] Dissolve 2 / 3 each of emulsifier OP-10 and AOS in water, mix with 2 / 3 each of St, MMA, and BA, and stir rapidly for 40 minutes to obtain pre-emulsion A. Then the remaining amount of emulsifier was mixed with the remaining St, MMA, BA and AA, and stirred rapidly for 40 minutes to obtain pre-emulsion B. Add 2 / 3 amount of sodium bicarbonate solution to the pre-emulsion A, heat and stir and add 2 / 3 amount of ammonium persulfate solution dropwise, control the addition within 1 hour, after the dropwise addition is completed, the temperature is 70 ° C ~ 80 ° C Next, insulate and react for 1.5 hours to obtain a seed emulsion. In the seed emulsion, evenly add the pre-emulsion B dropwise, and add it within 1.5 hours. Insulate and react at 70°C to 80°C for 2 hours, raise the temperature to 90°C and co...

Embodiment 2

[0028] 1. The raw material formula of multi-component polymer emulsion is as follows:

[0029]

[0030] Two. the preparation method of multiple polymer emulsion is as follows:

[0031] Dissolve 2 / 3 each of emulsifier OP-10 and AOS in water, mix with 2 / 3 each of St, MMA, and BA, and stir rapidly for 30 minutes to obtain pre-emulsion A. Then the remaining amount of emulsifier was mixed with the remaining St, MMA, BA and HEMA, and stirred rapidly for 40 minutes to obtain pre-emulsion B. Add 2 / 3 amount of sodium bicarbonate solution to the pre-emulsion A, heat and stir and dropwise add 2 / 3 amount of sodium persulfate solution, control the addition within 1 hour, after the dropwise addition is completed, the temperature is 70 ° C ~ 80 ° C Next, heat preservation reaction for 1.0 hour to obtain seed emulsion. In the seed emulsion, evenly add the pre-emulsion B dropwise, and add it within 1.5 hours. Insulate and react at 70°C to 80°C for 2.5 hours, raise the temperature to 90°C...

Embodiment 3

[0036] 1. The raw material formula of multi-component polymer emulsion is as follows:

[0037]

[0038] Two. the preparation method of multiple polymer emulsion is as follows:

[0039] Dissolve 2 / 3 each of emulsifier OP-10 and AOS in water, mix with 2 / 3 each of St, MMA, and BA, and stir rapidly for 40 minutes to obtain pre-emulsion A. Then the remaining amount of emulsifier was mixed with the remaining St, MMA, BA, AA, and HEMA, and stirred rapidly for 40 minutes to obtain pre-emulsion B. Add 2 / 3 amount of sodium bicarbonate solution to the pre-emulsion A, heat and stir and dropwise add 2 / 3 amount of ammonium persulfate solution, control the addition within 1.5 hours, after the dropwise addition is completed, the temperature is 70 ° C ~ 80 ° C Next, heat preservation reaction for 2.0 hours to obtain seed emulsion. In the seed emulsion, evenly add the pre-emulsion B dropwise, and add it within 1.5 hours. Insulate and react at 70°C to 80°C for 2.5 hours, raise the temperat...

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Abstract

The invention relates to the technical fields of polymer emulsion preparation and chemical building materials, in particular to a preparation method for multipolymer emulsion, application of the synthesized multipolymer emulsion as an admixture in waterproof mortar, the multipolymer emulsion, and cement mortar prepared from the multipolymer emulsion. The multipolymer emulsion is prepared from raw materials of styrene, methyl methacrylate, butyl acrylate, acrylic acid, beta-hydroxyethyl methacrylate, thermal decomposition initiator and complex emulsifying agent through polymerization by a core-shell emulsion polymerization method; and the cement mortar prepared from the multipolymer emulsion is prepared by mixing raw materials of yellow sand, cement, hydroxypropyl cellulose ether, polyethylene glycol and the multipolymer emulsion, wherein the mass ratio of the yellow sand to the cement to the hydroxypropyl cellulose ether to the polyethylene glycol to the multipolymer emulsion is 600:400:0.2:2:12-20. The multipolymer emulsion solves the problem of poor waterproofness of the prior mortar prepared from acrlate (SA) latex polymer, and improves the workability of the mortar and the compactness of the cement mortar.

Description

technical field [0001] The invention relates to the technical field of polymer emulsion preparation and chemical building materials, in particular to a preparation method of multi-element polymer emulsion, and uses the synthesized multi-element polymer emulsion as an admixture in waterproof mortar. Background technique [0002] The damage to buildings caused by the leakage of building structures has always been a difficult problem faced by construction engineering technology. The presence and migration of moisture is often an important cause of undesirable changes in the performance of masonry structures. In addition to achieving waterproof and anti-seepage through a compact structure, adding a certain amount of polymer to the mortar for cement modification has become an important technology for waterproofing building materials. [0003] The main function of the polymer in the mortar is to form a polymer network structure, which interweaves with the continuous structure for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F212/08C08F220/06C08F220/28C08F2/26C08F2/30C04B28/00C04B14/06C04B24/26
Inventor 龚雁张建荣
Owner 爱福家居(江苏)有限公司
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