Coating Fluid, Non-combustible Insulation Board and Preparation Method Therefor

Abstract

The present application relates to the field of building insulation materials, and specifically discloses a coating fluid, a non-combustible insulation board and a preparation method therefor. The coating fluid comprises 30-60 parts of flame retardant, 20-40 parts of styrene-acrylic emulsion, 10-25 parts of arabic gum, 12-18 parts of titanium dioxide and 150-200 parts of water. The non-combustible insulation board is prepared from EPS particles, a grouting material and the coating fluid of the present application, the weight ratio of the coating fluid to the EPS particles to the grouting material is 0.6:(0.8-1.5):(12-20), and the non-combustible insulation board has the heat conductivity coefficient of below 0.045 w/m.Math.k, the combustion grade of above A2 and the compressive strength of 0.12-0.18 MPa. The preparation method for a non-combustible insulation board is simple in operation, easy in control and suitable for mass production.

Claims

11. A non-combustible insulation board, comprising EPS particles, a grouting material and a coating fluid, wherein the weight ratio of the coating fluid to the EPS particles to the grouting material is 0.6:(0.8-1.5):(12-20); the coating fluid comprises the following components in parts by weight: 30-60 parts of flame retardant, 20-40 parts of styrene-acrylic emulsion, 10-25 parts of arabic gum, 12-18 parts of titanium dioxide and 150-200 parts of water; the viscosity of the grouting material is 12-16 Pa.Math.s; and the styrene-acrylic emulsion is prepared from styrene and acrylate monomer by emulsion copolymerization, and the styrene-acrylic emulsion has the solid content of 47%-49%, the pH value of 7-9 and the viscosity of 1000-4000 cps; the preparation method for a non-combustible insulation board comprises the following steps: S1: immersing the EPS particles in the coating fluid, the EPS particles are coated with the coating fluid; S2: preparing the fully immersed EPS particles into an insulation board, and after heating the EPS particles for pre-expansion, heating the EPS particles in a mold into an insulation board with a closed cell structure, the insulation board has pores; S3: filling the grouting material into the pores of the insulation board by a negative pressure process to obtain the non-combustible insulation board; the flame retardant is the mixture of zinc borate, magnesium hydroxide and aluminum hydroxide, and the weight ratio of the zinc borate to the magnesium hydroxide to the aluminum hydroxide is 1:1:2; the weight ratio of the coating fluid to the EPS particles to the grouting material is 0.6:1:16; the grouting material comprises magnesium oxide and magnesium sulfate, and the weight ratio of the magnesium oxide to the magnesium sulfate is 1:1.

12. The non-combustible insulation board according to claim 11, wherein the coating fluid comprises 40 parts of flame retardant, 30 parts of styrene-acrylic emulsion, 18 parts of arabic gum, 15 parts of titanium dioxide and 180 parts of water.

13. The non-combustible insulation board according to claim 11, wherein the viscosity of the grouting material is 14 Pa.Math.s.

14. (canceled)

Description

DETAILED DESCRIPTION

[0039] The present application is further described below in detail in combination with embodiments.

[0040] The raw materials used in the present application are commercially available.

Preparation Example 1

[0041] 4 kg of flame retardant, 3 kg of styrene-acrylic emulsion, 1.8 kg of arabic gum and 1.5 kg of titanium dioxide are added to a container, then 18 kg of water is added, and after mixing uniformly, a coating fluid is obtained, wherein the flame retardant is zinc borate, and the styrene-acrylic emulsion is purchased from Guangzhou JuLang Chemical Co., Ltd., with the model of SH7199A.

[0042] The differences between preparation examples 2-9 and preparation example 1 are shown in Table 1.

TABLE-US-00001 TABLE 1 Differences between Preparation Examples 2-9 and Preparation Example 1 (Unit: kg) Styrene-acrylic Arabic Zinc Category emulsion gum borate Preparation 3 1.8 4 example 1 Preparation 2 1.8 4 example 2 Preparation 4 1.8 4 example 3 Preparation 3 1 4 example 4 Preparation 3 2.5 4 example 5 Preparation 3 1.8 3 example 6 Preparation 3 1.8 6 example 7

PREPARATION EXAMPLE 8

[0043] The different between preparation example 8 and preparation example 1 is that: the flame retardant in preparation example 8 is the mixture of zinc borate, magnesium hydroxide and aluminum hydroxide, wherein the weight ratio of the zinc borate to the magnesium hydroxide to the aluminum hydroxide is 1:1:2.

[0044] The differences between preparation examples 9-14 and preparation example 1 are shown in Table 2.

TABLE-US-00002 TABLE 2 Differences between Preparation Examples 9-14 and Preparation Example 1 (Unit: kg) Styrene-acrylic Arabic Zinc Category emulsion gum borate Preparation 1.5 1.8 4 example 9 Preparation 4.5 1.8 4 example 10 Preparation 3 3 4 example 11 Preparation 3 0.5 4 example 12 Preparation 3 1.8 2.5 example 13 Preparation 3 1.8 6.5 example 14

EMBODIMENTS

Embodiment 1

[0045] 0.6 kg of EPS particles are immersed in 1 kg of coating fluid for 5 h, wherein the coating fluid is prepared in preparation example 1; then the immersed EPS particles are prepared into an insulation board by a traditional process; finally, 16 kg of grouting material is filled into the insulation board by a negative pressure process to obtain the non-combustible insulation board, wherein the pressure of the negative pressure process is ?0.6 Mbar; and the weight ratio of the coating fluid to the EPS particles to the grouting material is 0.6:1:16;

[0046] The grouting material is prepared from magnesium oxide and magnesium sulfate with water to adjust the viscosity to 14 Pa.Math.s, and the weight ratio of the magnesium oxide to the magnesium sulfate is 1:1.

[0047] The differences between embodiments 2-14 and embodiment 1 are shown in Table 3.

TABLE-US-00003 TABLE 3 Parameters of Differences between Embodiments 2-14 and Embodiment 1 Wight ratio of coating Coating fluid to EPS particles to Category fluid grouting material Viscosity Embodiment 1 Preparation 0.6:1:16 14 Pa .Math. s example 1 Embodiment 2 Preparation 0.6:1:16 14 Pa .Math. s example 2 Embodiment 3 Preparation 0.6:1:16 14 Pa .Math. s example 3 Embodiment 4 Preparation 0.6:1:16 14 Pa .Math. s example 4 Embodiment 5 Preparation 0.6:1:16 14 Pa .Math. s example 5 Embodiment 6 Preparation 0.6:1:16 14 Pa .Math. s example 6 Embodiment 7 Preparation 0.6:1:16 14 Pa .Math. s example 7 Embodiment 8 Preparation 0.6:1:16 14 Pa .Math. s example 8 Embodiment 9 Preparation 0.6:0.8:16 14 Pa .Math. s example 1 Embodiment 10 Preparation 0.6:1.5:16 14 Pa .Math. s example 1 Embodiment 11 Preparation 0.6:1:12 14 Pa .Math. s example 1 Embodiment 12 Preparation 0.6:1:20 14 Pa .Math. s example 1 Embodiment 13 Preparation 0.6:1:16 12 Pa .Math. s example 1 Embodiment 14 Preparation 0.6:1:16 16 Pa .Math. s example 1

[0048] The differences between reference examples 1-10 and embodiment 1 are shown in Table 4.

TABLE-US-00004 TABLE 4 Parameters of Differences between Reference Examples 1-10 and Embodiment 4 Wight ratio of coating Coating fluid to EPS particles Category fluid to grouting material Viscosity Reference Preparation 0.6:1:16 14 Pa .Math. s example 1 example 9 Reference Preparation 0.6:1:16 14 Pa .Math. s example 2 example 10 Reference Preparation 0.6:1:16 14 Pa .Math. s example 3 example 11 Reference Preparation 0.6:1:16 14 Pa .Math. s example 4 example 12 Reference Preparation 0.6:1:16 14 Pa .Math. s example 5 example 13 Reference Preparation 0.6:1:16 14 Pa .Math. s example 6 example 14 Reference Preparation 0.6:1.7:16 14 Pa .Math. s example 7 example 1 Reference Preparation 0.6:1:22 14 Pa .Math. s example 8 example 1 Reference Preparation 0.6:1:16 10 Pa .Math. s example 9 example 1 Reference Preparation 0.6:1:16 18 Pa .Math. s example 10 example 1

Reference Example 11

[0049] The difference between reference example 11 and embodiment 1 is that no coating fluid is contained in reference example 11.

Reference Example 12

[0050] The difference between reference example 12 and embodiment 1 is that no grouting material is contained in reference example 12.

Reference Example 13

[0051] The difference between reference example 13 and embodiment 1 is that the flame retardant is not added into the coating fluid but into the grouting material in reference example 13.

Reference Example 14

[0052] The difference between reference example 14 and embodiment 1 is that the non-combustible insulation board in reference example 14 is prepared in the following steps: [0053] S1: preparing the EPS particles into an insulation board; [0054] S2: mixing the coating fluid and the grouting material, and filling the mixture into the insulation board by a negative pressure process to obtain the non-combustible insulation board.

[0055] Non-combustible insulation boards prepared in embodiments 1-14 of the present application and non-combustible insulation boards prepared in reference examples 1-14 are subjected to performance tests, including heat conductivity coefficient, combustion performance and compressive strength. The specific test results are shown in Table 5, wherein the test of the heat conductivity coefficient is given in GB/T10294; the test of the combustion performance is given in GB8624-2006; and the test of the compressive strength is given in GB/T5486-2008.

TABLE-US-00005 TABLE 5 Test Results of Non-combustible Insulation Board Heat Conductivity Compressive Coefficient Combustion Strength Category (w/m .Math. k) Performance MPa Embodiment 1 0.041 A2 0.15 Embodiment 2 0.042 A2 0.14 Embodiment 3 0.042 A2 0.16 Embodiment 4 0.043 A2 0.12 Embodiment 5 0.042 A2 0.17 Embodiment 6 0.041 A2 0.14 Embodiment 7 0.041 A2 0.13 Embodiment 8 0.042 A2 0.14 Embodiment 9 0.045 A2 0.12 Embodiment 10 0.041 A2 0.17 Embodiment 11 0.041 A2 0.13 Embodiment 12 0.043 A2 0.18 Embodiment 13 0.045 A2 0.14 Embodiment 14 0.043 A2 0.15 Reference 0.047 A2 0.12 example 1 Reference 0.048 A2 0.14 example 2 Reference 0.046 A2 0.11 example 3 Reference 0.044 A2 0.11 example 4 Reference 0.041 B1 0.10 example 5 Reference 0.041 A2 0.11 example 6 Reference 0.051 A2 0.10 example 7 Reference 0.053 A1 0.22 example 8 Reference 0.055 A2 0.22 example 9 Reference 0.057 A2 0.11 example 10 Reference 0.042 B1 0.12 example 11 Reference 0.045 B1 0.13 example 12 Reference 0.057 A2 0.23 example 13 Reference 0.059 B1 0.27 example 14

[0056] It can be seen from embodiments 1-14 and reference examples 1-14 in combination with Table 5 that the non-combustible insulation boards prepared in embodiments 1-14 have a lower heat conductivity coefficient, a higher combustion grade and higher compressive strength, indicating that the non-combustible insulation boards have better insulation performance and flame-retardant effect.

[0057] The non-combustible insulation boards prepared in embodiments 1-14 have the heat conductivity coefficient of below 0.045 w/m.Math.k, the combustion grade of above A2 and the compressive strength of 0.12-0.18 MPa.

[0058] It can be seen from embodiments 1-3 and reference examples 1-2 in combination with Table 5 that when other conditions remain unchanged, the heat conductivity coefficient of the non-combustible insulation board increases after decrease with the increase of the amount of the styrene-acrylic emulsion.

[0059] It can be seen from embodiments 1, 6, 7, 8 and reference examples 5-6 in combination with Table 5 that when other conditions remain unchanged, the combustion grade of the non-combustible insulation board gradually increases from B1 to A2 with the increase of the amount of the flame retardant zinc borate. It can be seen from embodiment 1 and reference examples 11-12 in combination with Table 5 that when no coating fluid or grouting material is added in the process of preparing the non-combustible insulation board, the heat conductivity coefficient and the compressive strength of the non-combustible insulation board meet the requirements, but the flame-retardant performance of the non-combustible insulation board is poor.

[0060] It can be seen from embodiment 1 and reference example 13 in combination with Table 5 that when the flame retardant is not added into the coating fluid but into the grouting material, the heat conductivity coefficient of the non-combustible insulation board is too high to meet the use requirements.

[0061] It can be seen from embodiment 1 and reference example 14 in combination with Table 5 that the process steps in reference example 14 are changed in that the coating fluid and the grouting material are mixed and then filled into the insulation board, and the obtained non-combustible insulation board has poor performance and has a heat conductivity coefficient of 0.059 w/m.Math.k and the combustion grade of B1.

[0062] The present specific embodiment is only an explanation of the present application, not a limitation of the present application. Those skilled in the art can make amendments without creative contribution to the present embodiment as required after reading the description, and the amendments are protected by the patent law within the scope of the claims of the present application.