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Preparing method for anti-freezing premixed mortar

A technology of ready-mixed mortar and preparation steps, which is applied in the field of preparation of antifreeze ready-mixed mortar, which can solve the problems of long setting time of ready-mixed mortar, damage to the internal structure of mortar, and poor antifreeze performance, and achieve low cost and good antifreeze performance , The effect of simple preparation steps

Active Publication Date: 2016-11-16
广州市盈坚建材科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: in view of the long setting time of the currently used ready-mixed mortar, and the problem that the internal structure of the mortar is damaged and cracked due to poor frost resistance, the present invention mainly uses octamethylcyclotetrasilicon Oxygen is polymerized with isobutyltriethoxysilane and other substances to obtain a vinyl polysiloxane mixture, and then styrene is mixed with absolute ethanol, acrylate and other substances to obtain polystyrene acrylate. Then mix and heat it with vinyl polysiloxane mixture, add lauroyl peroxide, copper chloride and other substances at the same time to obtain silicone-modified styrene-acrylic polymer, and then mix it with cellulose ether and hollow glass beads and other materials to get mixed slurry, and finally mix it with ceramic fine sand, montmorillonite and other materials to get antifreeze ready-mixed mortar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] First weigh 7g of octamethylcyclotetrasiloxane into a three-necked flask with a thermometer and a reflux device, place the flask in a water bath, control the temperature at 90°C, and then add 0.3g of isobutyltriethoxy base silane, 0.5g tetramethylammonium hydroxide, stirred for 20min, then added 10g tetramethyldivinyldisiloxane, stirred and reacted for 4h to obtain vinylpolysiloxane mixture, and set aside; then weighed 5g benzene Add ethylene into a three-neck flask equipped with a thermometer and a reflux device, place the flask in a water bath, control the temperature at 80°C, then add 200mL of absolute ethanol, 5g of acrylate, and 0.3g of lauroyl peroxide in sequence, and stir for 3h , to obtain polystyrene acrylate; then add the spare vinyl polysiloxane mixture to the above polystyrene acrylate, control the temperature at 90°C, then add 0.3g lauroyl peroxide, 0.3g chloride Copper, stirred for 5 hours to obtain a silicone-modified styrene-acrylic polymer; the above-m...

example 2

[0020] First weigh 5g of octamethylcyclotetrasiloxane and add it to a three-necked flask with a thermometer and a reflux device, place the flask in a water bath, control the temperature at 80°C, and then add 0.1g of isobutyl triethoxy base silane, 0.3g tetramethylammonium hydroxide, stirred for 10min, then added 8g tetramethyldivinyldisiloxane, stirred and reacted for 3h to obtain vinylpolysiloxane mixture, and set aside; then weighed 3g benzene Add ethylene into a three-neck flask equipped with a thermometer and a reflux device, place the flask in a water bath, control the temperature at 70°C, then add 100mL of absolute ethanol, 3g of acrylate, and 0.1g of lauroyl peroxide in sequence, and stir for 2h , to obtain polystyrene acrylate; then add the spare vinyl polysiloxane mixture to the above polystyrene acrylate, control the temperature at 80°C, then add 0.1g lauroyl peroxide, 0.1g chloride Copper, stirred for 4 hours to obtain a silicone-modified styrene-acrylic polymer; th...

example 3

[0022] First, weigh 6g of octamethylcyclotetrasiloxane and add it to a three-necked flask with a thermometer and a reflux device, place the flask in a water bath, control the temperature at 85°C, and then add 0.2g of isobutyl triethoxy base silane, 0.4g tetramethylammonium hydroxide, stirred for 15min, then added 9g tetramethyldivinyldisiloxane, stirred and reacted for 3h to obtain vinylpolysiloxane mixture, and set aside; then weighed 4g benzene Add ethylene into a three-neck flask equipped with a thermometer and a reflux device, place the flask in a water bath, control the temperature at 75°C, then add 150mL of absolute ethanol, 4g of acrylate, and 0.2g of lauroyl peroxide in sequence, and stir for 2h , to obtain polystyrene acrylate; then add the spare vinyl polysiloxane mixture to the above polystyrene acrylate, control the temperature at 85°C, then add 0.2g lauroyl peroxide, 0.2g chloride Copper, stirred for 5 hours to obtain a silicone-modified styrene-acrylic polymer; t...

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Abstract

The invention relates to a preparing method for anti-freezing premixed mortar and belongs to the technical field of building material preparation. The preparing method mainly comprises the steps that octamethylcyclotetrasiloxane, isobutyltriethoxysilane and other substances are subjected to a polymerization reaction, and a vinyl polysiloxane mixture solution is obtained; styrene, absolute ethyl alcohol, acrylic ester and other substances are mixed and heated, and polystyrene acrylate is obtained; then polystyrene acrylate and the vinyl polysiloxane mixture solution are mixed and heated, lauroyl peroxide, copper chloride and other substances are added, and an organic silicon modified styrene-acrylate copolymer is obtained and then mixed with cellulose ether, hollow glass beads and other substances, and mixed paste is obtained; finally, the mixed paste, ceramic fine sand, montmorillonite and other substances are stirred and mixed, and the anti-freezing premixed mortar can be obtained. The anti-freezing premixed mortar prepared with the method is high in anti-freezing performance and strength, wherein the lowest anti-freezing temperature can reach minus 6 DEG C, and the strength can reach 18.9 MPa or above.

Description

technical field [0001] The invention relates to a method for preparing antifreeze ready-mixed mortar, which belongs to the technical field of building material preparation. Background technique [0002] Ready-mixed mortar refers to various mortar mixtures produced by specialized manufacturers and used in construction projects. It is a new type of building material developed in my country in recent years. It can be divided into ordinary ready-mixed mortar and special mortar according to its performance. Ordinary mortar mainly includes masonry mortar, plastering mortar and ground mortar. Masonry mortar and plastering mortar are mainly used for masonry and plastering of various concrete bricks, fly ash bricks and clay bricks in load-bearing walls and non-load-bearing walls. Ground mortar is used for ground leveling in ordinary and special occasions. Special mortar includes thermal insulation mortar, decorative mortar, self-leveling mortar, waterproof mortar, etc. It has variou...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/50C04B24/32C04B14/22C04B24/386C04B24/40C04B24/26C04B14/10C04B14/02
Inventor 郭迎庆薛培龙孟浩影
Owner 广州市盈坚建材科技发展有限公司
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