Special interface agent for thermal insulation and decoration integrated plate and preparation method thereof

Abstract

The invention relates to a special interface agent for a thermal insulation and decoration integrated board and a preparation method of the special interface agent, and the special interface agent is mainly prepared from the following components in parts by weight: # imgabs0. The special interface agent overcomes the defects of poor adhesive force, no resistance to tearing and the like of the existing common interface agent; according to the present invention, with the cooperation of the film forming auxiliary alcohol ester-12 and the di-n-butyl ester according to the preferable ratio, and under the synergistic cooperation effect of other preferable components such as the wetting agent, the moisturizing agent and the like in the system, the advantages of high adhesion, good water resistance and good tearing resistance are provided.

Description

Technical Field

[0001] The invention relates to a special interface agent for a thermal insulation decorative integrated board and a preparation method thereof, and is applied in the field of thermal insulation building coating production. Background Art

[0002] In recent years, with the popularization of green buildings and energy conservation and emission reduction, exterior wall insulation and decorative integrated panels, as a new type of exterior wall material, have gradually attracted market attention and developed rapidly.

[0003] First of all, from the characteristics of the material itself, the exterior wall insulation decorative integrated board has good insulation performance and decorative effect. It uses advanced technology and materials to organically combine insulation materials and decorative materials, which not only achieves the effect of insulation, but also plays a good decorative role. The use of this integrated board can effectively improve the energy efficiency of the building, reduce energy waste, and meet the requirements of energy conservation and emission reduction.

[0004] Secondly, the exterior wall insulation decorative integrated panels are easy to install, which can greatly shorten the construction period and reduce construction costs. The installation of traditional exterior wall insulation materials requires multiple processes, while the exterior wall insulation decorative integrated panels only need one installation to complete, which greatly improves the construction efficiency. In addition, the maintenance cost of this integrated panel is relatively low and the service life is long, which can effectively reduce the long-term operating cost of the building.

[0005] Of course, there are some shortcomings in the integrated panels for exterior wall thermal insulation and decoration. The structure of the integrated panels for exterior wall thermal insulation and decoration is from bottom to top: calcium silicate board - UV primer layer - interface agent layer - middle coating layer - sky color stone / sand color stone layer - topcoat layer. The coating for the integrated panels for exterior wall thermal insulation and decoration has high requirements in terms of weather resistance, temperature change resistance, adhesion, and water immersion and tear resistance. And with the increase in the output of the integrated panels for exterior wall thermal insulation and decoration, it is often necessary to dry the panels at high temperature after spraying the middle coating layer of the integrated panels and then stack them together for standby. During the stacking process, the paint film of the middle coating layer between the layers sticks together. When the panels are separated for the next use, the paint film of the middle coating layer will be torn off. At the same time, since most of the existing interface agents are single-component self-drying film-forming, long-term rolling of the interface agent is prone to problems such as roller surface drying and crusting. Therefore, it is necessary to use an interface agent with better interlayer adhesion. Therefore, it has become a top priority to provide a special interface agent for thermal insulation and decoration integrated panels with high adhesion, good water resistance and good tear resistance and a preparation method thereof. Summary of the invention

[0006] The present invention provides a special interface agent for a thermal insulation decorative integrated panel and a preparation method thereof, which overcomes the shortcomings of existing common interface agents such as poor adhesion and poor tear resistance. The special interface agent for the thermal insulation decorative integrated panel of the present application adopts styrene acrylic emulsion as a film former, is matched with film-forming aids alcohol ester dodeca and di-n-butyl ester in a preferred proportion, and has the advantages of high adhesion, good water resistance and good tear resistance under the synergistic effect of other preferred components in the system such as a wetting agent, a moisturizing agent, etc.

[0007] The technical solution of the present invention is as follows:

[0008] A special interface agent for thermal insulation decorative integrated panels, mainly prepared from the following components in the following weight ratios:

[0009]

[0010]

[0011] The existing thermal insulation decorative integrated board production uses a high-temperature baking process for rapid surface drying. During the baking process, the moisture in the paint film and some high-boiling point additives fail to volatilize in time, and a film will be attached to the surface of the finished board during storage. If it is stored outdoors, the moisture will be in the film, causing the paint film to soften. If the adhesion between the interface agent layers is poor, the film will be peeled off uniformly after being applied to the wall, which will easily cause the paint film and the film to be torn off together, resulting in problems such as paint peeling; at the same time, since the existing ordinary interface agent (single-component interface agent) is self-drying and film-forming, long-term rolling of the interface agent is prone to problems such as roller surface drying and crusting. The special interface agent for thermal insulation decorative integrated board of the present application uses styrene acrylic emulsion as a film-forming material, combined with a preferred proportion of film-forming additives alcohol ester dodeca and di-n-butyl ester, and under the synergistic effect of other preferred components in the system such as wetting agents, moisturizers, etc., it has the advantages of high adhesion, good water resistance, and good tear resistance. As a film-forming material, styrene acrylic emulsion can make the paint film have better interlayer adhesion, water resistance and other properties, solve the problem of poor interlayer adhesion of thermal insulation decorative integrated board, especially the problem of easy peeling of paint film after soaking in water. In addition to increasing the interlayer adhesion between the UV primer layer and the midcoat layer, the interface agent can also block the penetration of water in the UV bottom layer and the topcoat layer, ensuring the adhesion of the paint film while ensuring the water resistance and other properties of the paint film. The viscosity of the special interface agent for the finishing layer of the thermal insulation decorative integrated board is 12-16S / 25℃, the pH value is 8-10, and the construction defoaming performance is: there is no obvious bubble after the dry film is constructed, and the defoaming time is lower than the standard sample; it meets the requirements of GB / T 210-2014 standard, has excellent interlayer adhesion, water resistance and other properties, and can also have excellent tear resistance on calcium silicate board. The interface agent can also be used as a common exterior wall primer. Among them, styrene acrylic emulsion has excellent interlayer adhesion. Wetting agents can better level and wet the substrate, allowing the paint film to better adhere to the UV primer layer. Moisturizers can prevent skinning on the roller even after 24 hours of rolling. The preferred proportion of the preferred film-forming aids alcohol ester dodecahydrate and di-n-butyl ester (high boiling point film-forming aid) allows the styrene acrylic emulsion to form a film normally at both room temperature and low temperature environments, and will not cause poor water resistance due to the addition of more di-n-butyl ester. It can also solve the problem that the existing common interface agent is prone to skinning on the roller surface after long-term rolling.

[0012] The wetting agent is a nonionic emulsified wetting agent.

[0013] Preferred wetting agents have good flow properties, good system stability and good wetting of the substrate.

[0014] The humectant is grafted ethoxylate (glycerol ethoxylate).

[0015] The preferred moisturizer has lower viscosity than traditional straight-chain alcohol ethers, has better moisturizing effect, and effectively increases the open time of the paint film.

[0016] The thickener is a polyurethane thickener.

[0017] The preferred thickener has better water resistance and leveling properties.

[0018] Di-n-butyl ester preferred production LOCA Film-forming aid, high boiling point, zero VOC, low odor, and can also extend the open time of the paint film;

[0019] The styrene acrylic emulsion is preferably Budford RS308 emulsion, which has better interlayer adhesion;

[0020] BASF is the preferred defoamer MO 2157 has excellent compatibility and defoaming properties, and will not precipitate during storage while ensuring defoaming.

[0021] The method for preparing the special interface agent for the thermal insulation decorative integrated board comprises the following steps performed in sequence:

[0022] (1) adding water accounting for 89.08-91.33% of the total weight of the water into a mixer, starting the mixer, adjusting the speed to 300-500 r / min, and then sequentially adding a wetting agent, ethylene glycol, a humectant, alcohol ester dodecahydrate, di-n-butyl ester and a preservative therein to disperse evenly;

[0023] (2) Adjust the speed to 500-1000 r / min, and continue to add styrene-acrylic emulsion and disperse for at least 5 minutes;

[0024] (3) Adjust the speed to 1000-1500 r / min, and then continue to add defoamer and alkaline pH adjuster in turn, and disperse for at least 5 minutes;

[0025] (4) The rotation speed is adjusted to 300-500 r / min, and the thickener and the remaining water are added in sequence and dispersed evenly to obtain the special interface agent for the thermal insulation decorative integrated panel.

[0026] The preparation method of the special interface agent for the thermal insulation decorative integrated board of the present application has simple steps and is easy to operate.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1) The special interface agent for the thermal insulation decorative integrated board of the present application adopts styrene acrylic emulsion as the film-forming material, and is matched with the preferred proportion of film-forming aids alcohol ester dodeca and di-n-butyl ester, and under the synergistic effect of other preferred components in the system such as wetting agents, moisturizers, etc., it has the advantages of high adhesion, good water resistance, and good tear resistance;

[0029] 2) The preparation method of the special interface agent for the thermal insulation decorative integrated panel has simple steps and is easy to operate. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is described in detail below in conjunction with the embodiments of the specification.

[0031] Example 1

[0032] The special interface agent for thermal insulation decorative integrated panels described in the present invention is mainly prepared from the following components in the following weight ratios:

[0033]

[0034]

[0035] The wetting agent is a nonionic emulsified wetting agent.

[0036] The humectant is a grafted ethoxylate.

[0037] The thickener is a polyurethane thickener.

[0038] The method for preparing the special interface agent for the facing layer of the thermal insulation decorative integrated board comprises the following steps performed in sequence:

[0039] (1) adding water accounting for 91.33% of the total weight of the water into a mixer, starting the mixer, adjusting the speed to 400 r / min, and then sequentially adding a wetting agent, ethylene glycol, a humectant, alcohol ester dodecahydrate, di-n-butyl ester and a preservative therein to disperse evenly;

[0040] (2) Adjust the speed to 800 r / min, and continue to add styrene-acrylic emulsion and disperse for 5 minutes;

[0041] (3) Adjust the speed to 1200 r / min, and then continue to add defoaming agent and alkaline pH regulator in turn, and disperse for 5 minutes;

[0042] (4) The rotation speed is adjusted to 400 r / min, and the thickener and the remaining water are added in sequence and dispersed evenly to obtain the special interface agent for the finishing layer of the thermal insulation decorative integrated board.

[0043] Example 2

[0044] The special interface agent for thermal insulation decorative integrated panels described in the present invention is mainly prepared from the following components in the following weight ratios:

[0045]

[0046] The wetting agent is a nonionic emulsified wetting agent.

[0047] The humectant is a grafted ethoxylate.

[0048] The thickener is a polyurethane thickener.

[0049] The method for preparing the special interface agent for the facing layer of the thermal insulation decorative integrated board comprises the following steps performed in sequence:

[0050] (1) adding water accounting for 90.34% of the total weight of the water into a mixer, starting the mixer, adjusting the speed to 300 r / min, and then sequentially adding a wetting agent, ethylene glycol, a humectant, alcohol ester dodecahydrate, di-n-butyl ester and a preservative therein to disperse evenly;

[0051] (2) Adjust the speed to 1000 r / min, and continue to add styrene acrylic emulsion and disperse for 6 minutes;

[0052] (3) Adjust the speed to 1500 r / min, and then continue to add defoaming agent and alkaline pH regulator in turn, and disperse for 6 minutes;

[0053] (4) The rotation speed is adjusted to 300 r / min, and the thickener and the remaining water are added in sequence and dispersed evenly to obtain the special interface agent for the finishing layer of the thermal insulation decorative integrated board.

[0054] Example 3

[0055] The special interface agent for thermal insulation decorative integrated panels described in the present invention is mainly prepared from the following components in the following weight ratios:

[0056]

[0057] The wetting agent is a nonionic emulsified wetting agent.

[0058] The humectant is a grafted ethoxylate.

[0059] The thickener is a polyurethane thickener.

[0060] The method for preparing the special interface agent for the facing layer of the thermal insulation decorative integrated board comprises the following steps performed in sequence:

[0061] (1) adding water accounting for 89.08% of the total weight of the water into a mixer, starting the mixer, adjusting the speed to 500 r / min, and then sequentially adding a wetting agent, ethylene glycol, a humectant, alcohol ester dodecahydrate, di-n-butyl ester and a preservative therein to disperse evenly;

[0062] (2) Adjust the speed to 500 r / min, and continue to add styrene acrylic emulsion and disperse for 7 minutes;

[0063] (3) Adjust the speed to 1000 r / min, and then continue to add defoamer and alkaline pH adjuster in turn, and disperse for 7 minutes;

[0064] (4) The rotation speed is adjusted to 500 r / min, and the thickener and the remaining water are added in sequence and dispersed evenly to obtain the special interface agent for the finishing layer of the thermal insulation decorative integrated board.

[0065] Raw material information involved in each embodiment:

[0066] Styrene acrylic emulsion: Badful Co., Ltd., RS-308;

[0067] Wetting agent: Shenzhen Hairun Chemical Co., Ltd., NS2500;

[0068] Moisturizer: Clariant Chemicals (China) Co., Ltd., Polyglykol G 300;

[0069] Film-forming aid: alcohol ester XII: Huachang Zhidian New Materials (Jiangsu) Co., Ltd.;

[0070] Di-n-butyl ester: Shengxingxing Chemical (Shanghai) Co., Ltd., LOCA A+;

[0071] Defoamer: BASF (China) Co., Ltd., Foamaster MO 2157;

[0072] Alkaline pH adjuster: Dow Chemical Company, AMP-95;

[0073] Preservative: Hichemex, NKS15;

[0074] Thickener: Shanghai Baolijia Chemical Co., Ltd., BLJ-18S.

[0075] Experimental data:

[0076] Comparative sample: water-based interface agent, 6040 produced by Haochang;

[0077] Test method: limited materials refer to GB / T 18582-2009. The above examples were tested for various performance indicators and composite coating test; boiling water tear resistance: non-standard limit test, boil the finished board in boiling water for 4 hours, then use a cross-cutting device to cut it off with transparent tape; other performance indicators can refer to JG / T210-2018 Technical requirements for primers for interior and exterior walls of buildings and JG / T 287-2013 Performance indicators of decorative surfaces of thermal insulation decorative boards.

[0078] The results are shown in Tables 1 and 2 below:

[0079] Table 1 Performance test results

[0080]

[0081]

[0082] Table 2 Performance indexes of thermal insulation decorative board decorative surface

[0083]

[0084] It can be seen from Table 1-2 that the special interface agent for the thermal insulation decorative integrated board of the present application meets the requirements of GB / T 210-2014 standard, has excellent interlayer adhesion, water resistance and other properties, and also has excellent tear resistance on the calcium silicate board.

[0085] The special interface agent for the thermal insulation decorative integrated panel and the preparation method thereof described in the present invention are not limited to the above-mentioned embodiments. Any improvement or replacement based on the principle of the present invention should be within the protection scope of the present invention.

Claims

1. A special interface agent for thermal insulation decorative integrated panels, characterized by: It is mainly prepared from the following components in the following weight ratios:

2. The special interface agent for thermal insulation decorative integrated board according to claim 1, characterized in that: The wetting agent is a nonionic emulsified wetting agent.

3. The special interface agent for thermal insulation decorative integrated board according to claim 1, characterized in that: The humectant is a grafted ethoxylate.

4. The special interface agent for thermal insulation decorative integrated board according to claim 1, characterized in that: The thickener is a polyurethane thickener.

5. The method for preparing a special interface agent for thermal insulation decorative integrated panels according to any one of claims 2 to 4, characterized in that: The steps are as follows: (1) adding water accounting for 89.08-91.33% of the total weight of the water into a mixer, starting the mixer, adjusting the speed to 300-500 r / min, and then sequentially adding a wetting agent, ethylene glycol, a humectant, alcohol ester dodecahydrate, di-n-butyl ester and a preservative therein to disperse evenly; (2) Adjust the speed to 500-1000 r / min, and continue to add styrene-acrylic emulsion and disperse for at least 5 minutes; (3) Adjust the speed to 1000-1500 r / min, and then continue to add defoamer and alkaline pH adjuster in turn, and disperse for at least 5 minutes; (4) The rotation speed is adjusted to 300-500 r / min, and the thickener and the remaining water are added in sequence and dispersed evenly to obtain the special interface agent for the thermal insulation decorative integrated panel.

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