Two-component polymer cement-based decorative mortar and preparation method thereof

Abstract

The invention discloses a two-component polymer cement-based decorative mortar and a preparation method thereof. The two-component polymer cement-based decorative mortar is composed of a component A and a component B, the component A comprises the following components: a bactericide, a pH regulator, a coalescing agent, ethylene glycol, an acrylic emulsion, an organosilicon waterproofing agent, a thickening agent, color paste and water; the component B comprises the following components: cement, tartaric acid, lignocellulose, hydroxypropyl methyl cellulose, a dispersing agent, an alkali efflorescence resistant additive, a defoaming agent, a water reducing agent and white sand; according to the double-component polymer cement-based decorative mortar, the component A and the component B are combined, the polymer emulsion and the cement are used in a combined mode, the advantages are complementary, the compressive strength and the breaking strength of a cement-based product are guaranteed, meanwhile, the polymer provides flexibility, low water absorption and waterproofness of a decorative layer, and the decorative layer has the good waterproof performance. And the saltpetering risk can be greatly reduced due to low water absorption and waterproofness.

Description

Technical Field

[0001] This invention relates to the field of decorative mortar technology, specifically to a two-component polymer cement-based decorative mortar and its preparation method. Background Technology

[0002] Existing cement-based decorative mortar is usually a single-component decorative mortar, which is in powder form. Various colors (color powders) can be added to the decorative mortar powder to adjust the color. Water is added on-site to mix it into a paste for construction.

[0003] Conventional cement-based single-component decorative mortar has the following problems: Color difference risk: Because single-component cement-based decorative mortar uses pigments for color matching, and these pigments are not ground, they exist in granular aggregate form. This makes it difficult to mix evenly during production, easily leading to batch-to-batch color differences and pigment clumps. Furthermore, during on-site construction, the presence of unmixed pigment clumps can affect the color due to varying mixing times by workers, resulting in color differences on the wall surface. High production difficulty: In actual production, single-component cement-based decorative mortar requires color matching with pigments. Alternating production of different colors necessitates cleaning the mixing equipment, increasing production difficulty. Prone to efflorescence: Single-component cement-based decorative mortar is prone to efflorescence because calcium hydroxide is produced during cement hydration.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a two-component polymer cement-based decorative mortar and its preparation method. In this decorative mortar, the B component powder is an original white powder, and the A component liquid is used for color adjustment. The color adjustment material is an inorganic color paste that has been ground, which has good color stability. In addition, the combination of the A and B components complements each other, ensuring the compressive strength and flexural strength of the cement-based product. At the same time, the polymer also provides the decorative layer with flexibility, low water absorption and waterproofness.

[0006] In order to achieve the above-mentioned objectives of the present invention, the following technical solution is adopted:

[0007] The first aspect of the present invention provides a two-component polymer cement-based decorative mortar, wherein the two-component polymer cement-based decorative mortar is composed of component A and component B;

[0008] Component A comprises the following components in parts by weight:

[0009] 1.5-2.5 parts bactericide, 0.8-1.2 parts pH adjuster, 20-30 parts film-forming aid, 30-50 parts ethylene glycol, 450-550 parts acrylic emulsion, 8-12 parts organosilicon waterproofing agent, 1.5-2.5 parts thickener, 0-10 parts color paste and 400-450 parts water;

[0010] Component B comprises the following components in parts by weight:

[0011] 180-220 parts cement, 0.8-1.2 parts tartaric acid, 4-6 parts lignocellulose, 3-5 parts hydroxypropyl methylcellulose, 1.5-2.5 parts dispersant, 1.5-2.5 parts anti-alkali efflorescence agent, 0.8-1.2 parts defoamer, 1.5-2.5 parts water-reducing agent, and 700-850 parts white sand.

[0012] Preferably, component A comprises the following components in parts by weight:

[0013] 2 parts bactericide, 1 part pH adjuster, 25 parts film-forming aid, 40 parts ethylene glycol, 500 parts acrylic emulsion, 10 parts silicone waterproofing agent, 2 parts thickener and 420 parts water.

[0014] Preferably, component B comprises the following components in parts by weight:

[0015] 200 parts cement, 1 part tartaric acid, 5 parts lignocellulose, 4 parts hydroxypropyl methylcellulose, 2 parts dispersant, 2 parts anti-alkali efflorescence agent, 1 part defoamer, 2 parts water-reducing agent, and 783 parts white sand.

[0016] Preferably, the mass ratio of component A to component B is 3:(8-12).

[0017] Preferably, the film-forming aid is a dodecyl alcohol ester.

[0018] Preferably, the cement is sulfur-aluminate cement.

[0019] Preferably, the particle size of the white sand is 10 to 200 mesh.

[0020] Preferably, the pH adjuster is AMP-95.

[0021] A second aspect of the present invention provides a method for preparing the above-mentioned two-component polymer cementitious decorative mortar, the method comprising the following steps:

[0022] (a) Weigh each raw material according to the parts by weight;

[0023] (b) Mix and disperse the components in component A to obtain component A;

[0024] (c) Mix and stir the components in component B until homogeneous to obtain component B;

[0025] (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

[0026] Compared with the prior art, the beneficial effects of the present invention include at least the following:

[0027] In this invention, the B component of the two-component polymer cement-based decorative mortar is an original white powder, and the A component liquid is used for color adjustment. The color adjustment material is a ground inorganic pigment paste with good color stability. On-site use only requires mixing the A and B components in the specified proportions and stirring evenly. Moreover, the B component powder is originally white, allowing for continuous batch production without the need to consider cleaning production equipment between different colors. The color adjustment and cleaning work for the A component liquid is much simpler than that for the powder. In addition, the use of low-alkalinity white sulfur-aluminum cement can effectively reduce the risk of efflorescence.

[0028] This invention relates to a two-component polymer cement-based decorative mortar that combines component A and component B, using polymer emulsion in conjunction with cement to complement each other's advantages. This ensures the compressive and flexural strength of the cement-based product, while the polymer also provides the decorative layer with flexibility, low water absorption, and waterproofing. The low water absorption and waterproofing can significantly reduce the risk of efflorescence. Detailed Implementation

[0029] The embodiments of the technical solution of the present invention will be described in detail below with reference to the examples. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and are therefore only examples, and should not be used to limit the scope of protection of the present invention.

[0030] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0031] This invention provides a two-component polymer cement-based decorative mortar, which is composed of component A and component B.

[0032] Component A comprises the following components in parts by weight:

[0033] 1.5-2.5 parts bactericide, 0.8-1.2 parts pH adjuster, 20-30 parts film-forming aid, 30-50 parts ethylene glycol, 450-550 parts acrylic emulsion, 8-12 parts organosilicon waterproofing agent, 1.5-2.5 parts thickener, 0-10 parts color paste and 400-450 parts water;

[0034] Component B comprises the following components in parts by weight:

[0035] 180-220 parts cement, 0.8-1.2 parts tartaric acid, 4-6 parts lignocellulose, 3-5 parts hydroxypropyl methylcellulose, 1.5-2.5 parts dispersant, 1.5-2.5 parts anti-alkali efflorescence agent, 0.8-1.2 parts defoamer, 1.5-2.5 parts water-reducing agent, and 700-850 parts white sand.

[0036] In this invention, the B component of the two-component polymer cement-based decorative mortar is an original white powder, and the A component liquid is used for color adjustment. The color adjustment material is a ground inorganic pigment paste with good color stability. On-site use only requires mixing the A and B components in the specified proportions and stirring evenly. Moreover, the B component powder is originally white, allowing for continuous batch production without the need to consider cleaning production equipment between different colors. The color adjustment and cleaning work for the A component liquid is much simpler than that for the powder. In addition, the use of low-alkalinity white sulfur-aluminum cement can effectively reduce the risk of efflorescence.

[0037] This invention relates to a two-component polymer cement-based decorative mortar that combines component A and component B, using polymer emulsion in conjunction with cement to complement each other's advantages. This ensures the compressive and flexural strength of the cement-based product, while the polymer also provides the decorative layer with flexibility, low water absorption, and waterproofing. The low water absorption and waterproofing can significantly reduce the risk of efflorescence.

[0038] In one embodiment, component A comprises the following components in parts by weight:

[0039] 2 parts bactericide, 1 part pH adjuster, 25 parts film-forming aid, 40 parts ethylene glycol, 500 parts acrylic emulsion, 10 parts silicone waterproofing agent, 2 parts thickener and 420 parts water.

[0040] In one embodiment, component B comprises the following components in parts by weight:

[0041] 200 parts cement, 1 part tartaric acid, 5 parts lignocellulose, 4 parts hydroxypropyl methylcellulose, 2 parts dispersant, 2 parts anti-alkali efflorescence agent, 1 part defoamer, 2 parts water-reducing agent, and 783 parts white sand.

[0042] In one embodiment, the mass ratio of component A to component B is 3:(8-12).

[0043] In one embodiment, the film-forming aid is 12-ol ester.

[0044] In one embodiment, the cement is sulfur-aluminate cement.

[0045] In one embodiment, the particle size of the white sand is 10 to 200 mesh.

[0046] In one embodiment, the pH adjuster is AMP-95.

[0047] Another embodiment of the present invention provides a method for preparing the above-mentioned two-component polymer cementitious decorative mortar, the preparation method comprising the following steps:

[0048] (a) Weigh each raw material according to the parts by weight;

[0049] (b) Mix and disperse the components in component A to obtain component A;

[0050] (c) Mix and stir the components in component B until homogeneous to obtain component B;

[0051] (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

[0052] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0053] The following are the raw materials used. Any raw materials not listed can be ordinary commercially available products:

[0054] bactericide: EG-CF., purchased from THOR;

[0055] pH adjuster: AMP-95, Angus;

[0056] Film-forming aid: Dodecyl alcohol ester, Runtian Chemical;

[0057] Acrylic emulsion: MC-76L0, Dow Chemical;

[0058] Silicone waterproofing agent: BS1306, Wacker;

[0059] Thickener: TT615, Dow Chemical;

[0060] White aluminum sulfate cement: 62.5, Polar Bear;

[0061] Lignocellulose: FD40, JRS;

[0062] Hydroxypropyl methylcellulose: 15 US, Lotte;

[0063] Dispersant: 3918, BASF;

[0064] Anti-alkali efflorescence additives: ERA200, Elastane;

[0065] Defoamer: P803, Mingling;

[0066] Water-reducing agent: Melflux 2651F, BASF.

[0067] Example 1

[0068] This embodiment is a two-component polymer cement-based decorative mortar, which is composed of component A and component B, and the mass ratio of component A to component B is 3:8.

[0069] Component A comprises the following components in parts by weight:

[0070] 1.5 parts bactericide, 1.2 parts pH adjuster, 20 parts film-forming aid, 50 parts ethylene glycol, 550 parts acrylic emulsion, 8 parts silicone waterproofing agent, 1.5 parts thickener, 5 parts color paste and 400 parts water;

[0071] Component B comprises the following components in parts by weight:

[0072] The ingredients are: 180 parts cement, 1.2 parts tartaric acid, 4 parts lignocellulose, 5 parts hydroxypropyl methylcellulose, 1.5 parts dispersant, 2.5 parts anti-alkali efflorescence agent, 0.8 parts defoamer, 1.5 parts water-reducing agent, and 700 parts white sand, wherein the particle size of the white sand is 10-200 mesh.

[0073] The preparation method of the above-mentioned two-component polymer cementitious decorative mortar includes the following steps:

[0074] (a) Weigh each raw material according to the parts by weight;

[0075] (b) Mix and disperse the components in component A to obtain component A;

[0076] (c) Mix and stir the components in component B until homogeneous to obtain component B;

[0077] (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

[0078] Example 2

[0079] This embodiment is a two-component polymer cement-based decorative mortar, which is composed of component A and component B, and the mass ratio of component A to component B is 3:12.

[0080] Component A comprises the following components in parts by weight:

[0081] 2.5 parts bactericide, 0.8 parts pH adjuster, 30 parts film-forming aid, 30 parts ethylene glycol, 450 parts acrylic emulsion, 8 parts silicone waterproofing agent, 2.5 parts thickener, 10 parts color paste and 450 parts water;

[0082] Component B comprises the following components in parts by weight:

[0083] The ingredients are: 220 parts cement, 0.8 parts tartaric acid, 6 parts lignocellulose, 3 parts hydroxypropyl methylcellulose, 2.5 parts dispersant, 1.5 parts anti-alkali efflorescence agent, 1.2 parts defoamer, 2.5 parts water-reducing agent, and 850 parts white sand, wherein the particle size of the white sand is 10-200 mesh.

[0084] The preparation method of the above-mentioned two-component polymer cementitious decorative mortar includes the following steps:

[0085] (a) Weigh each raw material according to the parts by weight;

[0086] (b) Mix and disperse the components in component A to obtain component A;

[0087] (c) Mix and stir the components in component B until homogeneous to obtain component B;

[0088] (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

[0089] Example 3

[0090] This embodiment is a two-component polymer cement-based decorative mortar, which is composed of component A and component B, and the mass ratio of component A to component B is 3:10.

[0091] Component A comprises the following components in parts by weight:

[0092] 2 parts bactericide, 1 part pH adjuster, 25 parts film-forming aid, 40 parts ethylene glycol, 500 parts acrylic emulsion, 10 parts silicone waterproofing agent, 2 parts thickener and 420 parts water.

[0093] Component B comprises the following components in parts by weight:

[0094] 200 parts cement, 1 part tartaric acid, 5 parts lignocellulose, 4 parts hydroxypropyl methylcellulose, 2 parts dispersant, 2 parts anti-alkali efflorescence agent, 1 part defoamer, 2 parts water-reducing agent, and 783 parts white sand.

[0095] The preparation method of the above-mentioned two-component polymer cementitious decorative mortar includes the following steps:

[0096] (a) Weigh each raw material according to the parts by weight;

[0097] (b) Mix and disperse the components in component A to obtain component A;

[0098] (c) Mix and stir the components in component B until homogeneous to obtain component B;

[0099] (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

[0100] Comparative Example 1

[0101] This comparative example is a two-component polymer cement-based decorative mortar, which is composed of component A and component B, and the mass ratio of component A to component B is 3:10.

[0102] Component A comprises the following components in parts by weight:

[0103] 2 parts bactericide, 1 part pH adjuster, 25 parts film-forming aid, 40 parts ethylene glycol, 500 parts acrylic emulsion, 10 parts silicone waterproofing agent, 2 parts thickener and 420 parts water.

[0104] Component B comprises the following components in parts by weight:

[0105] 200 parts cement, 5 parts lignocellulose, 4 parts hydroxypropyl methylcellulose, 2 parts dispersant, 2 parts anti-alkali efflorescence agent, 1 part defoamer, 2 parts water-reducing agent, and 783 parts white sand.

[0106] The preparation method of the above-mentioned two-component polymer cementitious decorative mortar includes the following steps:

[0107] (a) Weigh each raw material according to the parts by weight;

[0108] (b) Mix and disperse the components in component A to obtain component A;

[0109] (c) Mix and stir the components in component B until homogeneous to obtain component B;

[0110] (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

[0111] Comparative Example 2

[0112] This comparative example is a two-component polymer cement-based decorative mortar, which is composed of component A and component B, and the mass ratio of component A to component B is 3:15.

[0113] Component A comprises the following components in parts by weight:

[0114] 2 parts bactericide, 1 part pH adjuster, 25 parts film-forming aid, 40 parts ethylene glycol, 500 parts acrylic emulsion, 10 parts silicone waterproofing agent, 2 parts thickener and 420 parts water.

[0115] Component B comprises the following components in parts by weight:

[0116] 200 parts cement, 1 part tartaric acid, 5 parts lignocellulose, 4 parts hydroxypropyl methylcellulose, 2 parts dispersant, 2 parts anti-alkali efflorescence agent, 1 part defoamer, 2 parts water-reducing agent, and 783 parts white sand.

[0117] The preparation method of the above-mentioned two-component polymer cementitious decorative mortar includes the following steps:

[0118] (a) Weigh each raw material according to the parts by weight;

[0119] (b) Mix and disperse the components in component A to obtain component A;

[0120] (c) Mix and stir the components in component B until homogeneous to obtain component B;

[0121] (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

[0122] Experimental Example

[0123] Two-component polymer cementitious decorative mortars of Example 3 and Comparative Examples 1-2 were obtained respectively;

[0124] The performance of different decorative mortars was tested according to JC / T1024-2019 "Wall Finishing Mortar", and the test results are shown in Table 1.

[0125] Table 1

[0126]

[0127]

[0128] As shown in Table 1:

[0129] Compared with the comparative example, the two-component polymer cement-based decorative mortar prepared in the embodiments of this application has superior performance indicators.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A two-component polymer cement-based decorative mortar, characterized in that, The two-component polymer cement-based decorative mortar consists of component A and component B. Component A comprises the following components in parts by weight: 1.5-2.5 parts bactericide, 0.8-1.2 parts pH adjuster, 20-30 parts film-forming aid, 30-50 parts ethylene glycol, 450-550 parts acrylic emulsion, 8-12 parts organosilicon waterproofing agent, 1.5-2.5 parts thickener, 0-10 parts color paste and 400-450 parts water; Component B comprises the following components in parts by weight: The ingredients are: 180-220 parts cement, 0.8-1.2 parts tartaric acid, 4-6 parts lignocellulose, 3-5 parts hydroxypropyl methylcellulose, 1.5-2.5 parts dispersant, 1.5-2.5 parts anti-alkali efflorescence agent, 0.8-1.2 parts defoamer, 1.5-2.5 parts water-reducing agent, and 700-850 parts white sand.

2. The two-component polymer cement-based decorative mortar according to claim 1, characterized in that, Component A comprises the following components in parts by weight: 2 parts bactericide, 1 part pH adjuster, 25 parts film-forming aid, 40 parts ethylene glycol, 500 parts acrylic emulsion, 10 parts silicone waterproofing agent, 2 parts thickener and 420 parts water.

3. The two-component polymer cement-based decorative mortar according to claim 1, characterized in that, Component B comprises the following components in parts by weight: 200 parts cement, 1 part tartaric acid, 5 parts lignocellulose, 4 parts hydroxypropyl methylcellulose, 2 parts dispersant, 2 parts anti-alkali efflorescence agent, 1 part defoamer, 2 parts water-reducing agent, and 783 parts white sand.

4. The two-component polymer cementitious decorative mortar according to any one of claims 1 to 3, characterized in that, The mass ratio of component A to component B is 3:(8-12).

5. The two-component polymer cementitious decorative mortar according to any one of claims 1 to 3, characterized in that, The film-forming aid is 12-ol ester.

6. The two-component polymer cementitious decorative mortar according to any one of claims 1 to 3, characterized in that, The cement is sulfur-aluminate cement.

7. The two-component polymer cementitious decorative mortar according to any one of claims 1 to 3, characterized in that, The particle size of the white sand is 10-200 mesh.

8. The two-component polymer cementitious decorative mortar according to any one of claims 1 to 3, characterized in that, The pH adjuster is AMP-95.

9. The method for preparing the two-component polymer cementitious decorative mortar according to any one of claims 1 to 8, characterized in that, The preparation method includes the following steps: (a) Weigh each raw material according to the parts by weight; (b) Mix and disperse the components in component A to obtain component A; (c) Mix and stir the components in component B until homogeneous to obtain component B; (d) According to the mixing ratio, component A and component B are packaged separately to obtain two-component polymer cement-based decorative mortar.

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