CN111072336A

CN111072336A - Water-based sound-insulation modified polymer cement-based waterproof slurry and preparation method thereof

Info

Publication number: CN111072336A
Application number: CN201811224126.1A
Authority: CN
Inventors: 王昌; 江生锁; 胡中源; 董立志
Original assignee: Hebei Chenyang Industry and Trade Group Co Ltd
Current assignee: Hebei Chenyang Industry and Trade Group Co Ltd
Priority date: 2018-10-19
Filing date: 2018-10-19
Publication date: 2020-04-28

Abstract

The invention provides a water-based sound-insulation modified polymer cement-based waterproof slurry, which comprises a liquid component and a powder component, wherein the weight ratio of the liquid component to the powder component is 1: 3.0-4.0; wherein, in the liquid material components, the liquid material components comprise the following components in percentage by weight: 20-30% of styrene-acrylic emulsion I, 20-30% of styrene-acrylic emulsion II, 0.10-0.20% of preservative, 0.20-0.30% of dispersant, 0.10-0.20% of defoamer and 45-60% of water, wherein in the powder component, the powder component comprises the following components in percentage by weight: 40-55% of cement, 30-50% of quartz sand, 3-5% of quartz powder, 5-10% of modified sound insulation material, 0.02-0.05% of cellulose ether, 0.4-0.5% of water reducing agent and 1-2% of silica fume. The product of the invention has bonding strength, water resistance and durability and enables the waterproof coating film to have certain deformability.

Description

Water-based sound-insulation modified polymer cement-based waterproof slurry and preparation method thereof

Technical Field

The invention belongs to the field of coatings, and particularly relates to a water-based sound-insulation modified polymer cement-based waterproof slurry and a preparation method thereof.

Background

Along with the improvement of requirements of people on the quality of building engineering and the use function of buildings, the problems of wall body waterproofing, damp interface waterproofing and basement waterproofing are more and more concerned and valued in the building industry. In the traditional waterproof concept, flexible waterproof materials such as coiled materials, sheets and coatings are often used as independent waterproof materials in engineering. The flexible waterproof materials have strong basic layer deformation capability and convenient large-area construction, but the flexible waterproof materials have higher requirements on the basic layer drying degree, generally require the water content to be below 9 percent, and are difficult to achieve for underground engineering (particularly deep basements) and poorly ventilated washrooms. And when the bathroom facade uses coiled materials or sheets, the general facing bricks are difficult to be directly bonded on the waterproof layer.

In recent years, large-scale development and application of urban underground space are realized, a large number of underground civil air defense projects are repaired and recycled, the waterproof of the occasions is based on the principle of rigid-flexible combination and multi-defense, but many manufacturers expand the application range of rigid waterproof materials (such as water-tight cement-based permeable crystallization type waterproof materials and the like) on one side and are applied to waterproof construction of the back surface and the upstream surface of the underground project. The practical application of engineering finds that the rigid waterproof material has the biggest defects of no flexibility, poor crack resistance, easy cracking when the wall has micro cracks or vibration caused by beating in decoration, and poor impermeability. The widely adopted method for blocking the capillary pores of the concrete by the waterproof agent plays a certain role in reducing the defects of the concrete and the cement mortar. However, the internal structure form of the material is not changed, so that the waterproof effect is not ideal, particularly, the waterproof effect cannot meet the requirement of building waterproofing as an independent waterproof layer, and the common waterproof slurry has no sound insulation effect.

Disclosure of Invention

In order to solve the technical problems in the background art, the invention provides a water-based sound-insulation modified polymer cement-based waterproof slurry, which comprises a liquid component and a powder component, wherein the weight ratio of the liquid component to the powder component is 1: 3.0-4.0;

wherein, in the liquid material components, the liquid material components comprise the following components in percentage by weight:

in the powder component, the powder component comprises the following components in percentage by weight:

further, the water-based sound-insulation modified polymer cement-based waterproof slurry comprises a liquid component and a powder component, wherein the liquid component and the powder component are added in a weight ratio of 1: 3.5;

wherein the liquid material component comprises the following components in percentage by weight:

further, the cement is marked by No. 42.5 ordinary portland cement or No. 42.5R ordinary portland cement, the particle size of the quartz sand is 80-120 meshes of quartz sand, and the particle size of the quartz powder is 200 meshes of quartz powder.

Further, the cellulose ether is hydroxyethyl methyl cellulose ether or hydroxypropyl methyl cellulose ether, and the viscosity is 20000 mPa.s-40000 mPa.s.

Further, the water reducing agent is a sulfonated melamine high-efficiency water reducing agent or a polycarboxylic acid water reducing agent.

Further, the defoaming agent is mineral oil or an organic silicon defoaming agent, and the dispersing agent is a sodium polyacrylate dispersing agent.

Furthermore, the vitrification temperature of the styrene-acrylic emulsion I is between-8 ℃ and-10 ℃, and the vitrification temperature of the styrene-acrylic emulsion II is between 10 ℃ and 15 ℃.

Further, the modified sound insulation material is prepared from nitrile rubber powder and active carbon, wherein the mass ratio of the addition amount of the nitrile rubber powder to the addition amount of the active carbon is 80: 20, or a mixture thereof.

Further, the invention provides a preparation method of the water-based sound-insulation modified polymer cement-based waterproof slurry, which is characterized by comprising the following steps of:

(1) the liquid material preparation method comprises the following steps: firstly adding the emulsion I and the emulsion II, then adding the water, the antifoaming agent and the preservative under the high-speed dispersion of 300-500 r/min, and then dispersing for 20 min at 400-600 r/min.

(2) The preparation method of the powder comprises the following steps: adding half of cement and quartz sand, then adding quartz powder, a water reducing agent, cellulose ether, a modified sound insulation material and silica fume under a stirring state, then adding the rest cement and quartz sand, and continuously stirring for 30 minutes after all the materials are added;

(3) when in use, the liquid material and the powder material are uniformly mixed according to the formula amount.

Compared with the prior art, the invention has the following advantages:

1. the two styrene-acrylic emulsions which have good compound property with cement but different MFT are mixed, so that the bonding strength, water resistance and durability of the product are improved, and the waterproof coating film has certain deformability.

2. The powder proportioning is optimized, and the micro silicon powder is added into the powder, so that the impermeability, the water resistance and the bonding strength of the waterproof coating are improved.

3. The operable time of the waterproof coating and the drying speed of the waterproof coating are improved by screening the auxiliary agent and optimizing the liquid-powder ratio.

4. The product of the invention does not contain toxic substances, and belongs to a green and environment-friendly product.

5. The modified sound insulation material is added, and the sound insulation effect of the modified polymer cement-based waterproof slurry is improved.

Detailed Description

The present invention is further illustrated by the following preferred examples of the invention, which are intended to be illustrative only and are not intended to be limiting.

In the present invention, the units indicating the contents of the raw materials are based on parts by weight in kilograms unless otherwise specified. In addition, the determination methods of the technical indexes of the invention are all standard methods used in the field, and specific reference can be made to the latest national standard unless otherwise stated. In addition, other raw materials used in the present invention are those generally used in the art.

Example 1

In the embodiment, the water-based sound-insulation modified polymer cement-based waterproof slurry comprises a liquid component and a powder component, wherein the weight ratio of the liquid component to the powder component is 1: 3.5;

example 2

In the embodiment, the water-based sound-insulation modified polymer cement-based waterproof slurry comprises a liquid component and a powder component, wherein the weight ratio of the liquid component to the powder component is 1: 3;

1) liquid part

example 3

In the embodiment, the water-based sound-insulation modified polymer cement-based waterproof slurry comprises a liquid component and a powder component, wherein the weight ratio of the liquid component to the powder component is 1: 4;

example 4

the test method comprises the following steps:

1. the solid content, drying time, bonding strength, impermeability, flexibility, alkali resistance, heat resistance and frost resistance are detected according to the detection method in JC/T2090-2011 II type Polymer Cement waterproof mortar. The invention also performs performance test on the water-based sound-insulation modified polymer cement-based waterproof slurry described in the embodiments 1-4, referring to GB/T16406-1996 test on damping performance of material by bending resonance method

The water-based sound-insulation modified polymer cement-based waterproof slurry provided by the invention has the following example detection results:

in conclusion, the polymer cement-based waterproof slurry has excellent acid and alkali resistance, weather resistance, bonding strength and isolation to carbon dioxide, and simultaneously has extremely low VOC, heavy metal and the like in an undetected range, so that the product can effectively prevent corrosion media such as chloride, oxygen, carbon dioxide, rainwater, acid rain and the like in the environment from corroding structural materials, is suitable for concrete surface protection, is waterproof and impermeable to ceramic tiles and wood, and has the effects of preventing weathering, carbonization and corrosion, and the water-based soundproof modified polymer cement-based waterproof slurry has an obvious soundproof effect.

In the present embodiment, it is obvious that the above embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be introduced thereby while remaining within the scope of the invention as claimed.

Claims

1. The water-based sound-insulation modified polymer cement-based waterproof slurry is characterized by comprising a liquid component and a powder component, wherein the weight ratio of the liquid component to the powder component is 1: 3.0-4.0;

2. the aqueous sound-proofing modified polymer cement-based waterproof slurry as claimed in claim 1, which comprises a liquid component and a powder component, wherein the ratio of the liquid component to the powder component is 1: 3.5;

3. the aqueous sound-proofing modified polymer cement-based waterproof slurry according to claim 1 or 2, wherein the cement is 42.5 ordinary portland cement or 42.5R ordinary portland cement, the quartz sand is quartz sand with a particle size of 80-120 meshes, and the quartz powder is quartz powder with a particle size of 200 meshes.

4. The aqueous, noise-damping, modified polymer cement-based waterproofing slurry according to claim 1, 2 or 3 wherein the cellulose ether is hydroxyethyl methyl cellulose ether or hydroxypropyl methyl cellulose ether having a viscosity of from 20000mPa.s to 40000 mPa.s.

5. The water-based sound-insulation modified polymer cement-based waterproof slurry as claimed in any one of claims 1 to 4, wherein the water reducing agent is a sulfonated melamine high-efficiency water reducing agent or a polycarboxylic acid water reducing agent.

6. The aqueous sound-proofing modified polymer cement-based waterproof slurry according to any one of claims 1 to 5, wherein the defoamer is a mineral oil or silicone defoamer and the dispersant is a sodium polyacrylate dispersant.

7. The aqueous sound-deadening modified polymer cement-based waterproof paste according to any one of claims 1 to 6, wherein the glass transition temperature of the styrene-acrylic emulsion No. one is from-8 ℃ to-10 ℃, and the glass transition temperature of the styrene-acrylic emulsion No. two is from 10 ℃ to 15 ℃.

8. The aqueous sound-insulation modified polymer cement-based waterproof slurry as claimed in any one of claims 1 to 7, wherein the modified sound-insulation material is prepared by mixing nitrile rubber powder and activated carbon in a mass ratio of 80: 20, or a mixture thereof.

9. A method of preparing the aqueous sound-deadening modified polymer cement-based waterproofing slurry of any one of claims 1 to 8, comprising the steps of:

⑴ the liquid material is prepared by adding the styrene-acrylic emulsion I and the styrene-acrylic emulsion II according to the formula amount, then adding the water, the antifoaming agent, the preservative and the dispersant under the high-speed dispersion of 300-600 r/min, and then dispersing for 20 min at 400-600 r/min.

⑵ Process for preparing the powder comprises adding half of cement and quartz sand, adding quartz powder, water reducing agent, cellulose ether, modified sound insulation material and silica fume while stirring, adding the rest cement and quartz sand, and stirring for 30 min;

⑶ when in use, the liquid material and the powder material are mixed evenly according to the formula amount.