Waterproof material for coating outer surface of insulating frame and preparation method of waterproof material

Abstract

The invention discloses a waterproof material for coating the outer surface of an insulating frame and a preparation method of the waterproof material, and relates to the technical field of waterproof materials, the insulating frame is made of a wood material, and the waterproof material comprises the following components in percentage by mass: 5-10% of isocyanate, 30-40% of diatomite, 5-10% of propylene glycol alginate and the balance of an organic solvent; a waterproof material containing the components is prepared into slurry, and the slurry is coated on the outer surface of the insulating frame to form a waterproof layer. By coating the waterproof layer on the platform operation fixing insulation frame, on one hand, the insulation frame can be protected, the insulation frame is prevented from being affected with damp, the service life of the insulation frame is prolonged, and on the other hand, the problem that after the insulation frame is affected with damp, the insulation performance is reduced, and consequently certain risks exist in the using process of workers is solved.

Description

Technical Field

[0001] The invention relates to the technical field of waterproof materials, and in particular to a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Background Art

[0002] With the rapid development of my country's national economy and the continuous improvement of material life, people's dependence on "electricity" has become higher and higher. Therefore, how to safely and reliably supply high-quality electricity to users has become the responsibility of our power people. Therefore, the distribution network, as a key link in the power system, is particularly important, and live working in the distribution network is an effective way to solve the problem. Live working has become an important means of testing, repairing and transforming distribution equipment, and has played a very important role in the safe and reliable operation of the power system and improving economic benefits. The continuous development of the level of live working, the application of advanced tools, and the use of various protective products, these high-tech products not only improve the efficiency of work, but also reduce the labor intensity of operators and increase the safety of live working.

[0003] However, for live operations on distribution lines, when the boom truck cannot reach the operating position and an insulating platform is used to replace the knife switch or fuse, the upper pile head drainage line needs to be fixed. When the drainage line is too long, it cannot be well fixed. In actual operations, the cooperating personnel are required to hold the locking rod all the time, which will cause fatigue and numbness in the hands and feet over time, and prone to malfunction. When the shielding is not strict or the insulating shield falls off during our operation, it will cause immeasurable consequences to our operators and electrical equipment. Moreover, the insulating shield cannot be used as the main insulation in live operations, but can only be used as auxiliary insulation. In order to solve this problem, the inventor has developed a platform operation fixed insulation frame.

[0004] However, although the current platform operation fixed insulation frame solves the problem of fixing the upper pile head drainage line, due to its long-term use outdoors, if the insulation frame is made of wood material, it is very likely to get damp, which will reduce the insulation performance of the insulation frame and increase the risk of workers during use. Summary of the invention

[0005] Based on the problems existing in the background technology, the purpose of the present invention is to provide a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. By coating the waterproof material on a fixed insulating frame for platform operations, the insulating frame can be protected, the insulating frame can be prevented from getting damp, and the risks of workers during work can be reduced.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present application provides a waterproof material for coating the outer surface of an insulating frame. The insulating frame is made of wood material. Calculated by mass percentage, the waterproof material includes 5% to 10% of isocyanate, 30% to 40% of diatomaceous earth, 5% to 10% of propylene glycol alginate, and the remainder is an organic solvent. The waterproof material containing the above ingredients is prepared into a slurry and coated on the outer surface of the insulating frame to form a waterproof layer.

[0008] On the one hand, the isocyanate added to the waterproof material can enhance the bonding performance between diatomaceous earth and propylene glycol alginate, so that the waterproof material slurry can quickly form a waterproof film layer after being coated on the outer surface of the insulating frame. At the same time, the surface of the diatomaceous earth contains a large amount of silicon hydroxyl groups, which have strong reactivity and adsorption, and can be well combined with isocyanate and propylene glycol alginate, playing the role of a "molecular bridge", enhancing the bonding force between molecular interfaces, thereby improving the density of the polymer, so that the waterproof layer can have a good waterproof effect. On the other hand, since the insulating frame is made of wood material, the molecular structure of the added isocyanate contains -N=C=O structure, which is active and easy to polymerize. The wood material contains cellulose. The cellulose in the wood material reacts with isocyanate to form a closed cyclic intermediate. This cyclic intermediate can further react with the cellulose in the wood material to generate amino acid formate, and then react with carboxylic acid to generate polyurethane. The polyurethane can react with the hydroxyl groups on the surface of the wood to generate amino formate and polyurethane. The polyurethane can form a continuous polymer film on the surface of the wood, thereby increasing the adhesion between the waterproof film formed by diatomaceous earth and propylene glycol alginate and the wood substrate, and improving the bonding strength of the waterproof layer, thereby protecting the insulating frame, preventing the insulating frame from moisture, and reducing the risks of workers during work.

[0009] Furthermore, the organic solvent includes ethylene glycol ether, ethanolamine or styrene.

[0010] Furthermore, the thickness of the waterproof layer is 3 to 6 mm.

[0011] Furthermore, the diatomaceous earth is modified diatomaceous earth modified by a mixed solution of hydroxypropyl β-cyclodextrin and ammonia water.

[0012] Furthermore, the modification method of the modified diatomite comprises the following steps:

[0013] The diatomaceous earth is completely immersed in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water, and then taken out and dried to obtain the pretreated diatomaceous earth;

[0014] The pretreated diatomaceous earth is placed in a polyethylene glycol and organic ammonium salt aqueous solution, heated to 45-50°C and then kept warm, and then a titanate coupling agent is added, and heated at 50-55°C for 40-60 minutes. The diatomaceous earth is filtered out and dried at 40-50°C to obtain modified diatomaceous earth.

[0015] After the diatomaceous earth is modified, the porosity of the diatomaceous earth can be enlarged, thereby improving its ability to adsorb propylene glycol alginate, further enhancing the density of the waterproof layer and improving the waterproof performance.

[0016] Furthermore, the organic ammonium salt includes tetrabutylammonium tetrafluoroborate, acryloyloxyethyltrimethylammonium chloride or tetrabutylammonium hexafluorophosphate.

[0017] Furthermore, the volume ratio of the hydroxypropyl β-cyclodextrin to ammonia water is 1:3.

[0018] In a second aspect, the present application provides a method for preparing a waterproof material for coating the outer surface of an insulating frame, comprising the following steps:

[0019] The diatomaceous earth is completely immersed in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water, and then taken out and dried to obtain the pretreated diatomaceous earth;

[0020] The pretreated diatomaceous earth is placed in a polyethylene glycol and organic ammonium salt aqueous solution, heated to 45-50°C and then kept warm, and then a titanate coupling agent is added, and heated at 50-55°C for 40-60 minutes, and the diatomaceous earth is filtered out and dried at 40-50°C to obtain modified diatomaceous earth;

[0021] Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and organic solvent according to mass ratio and set aside;

[0022] Adding isocyanate, modified diatomaceous earth and propylene glycol alginate into an organic solvent, heating and stirring to prepare a slurry, thereby obtaining a slurry of waterproof material for coating an insulating frame;

[0023] The prepared slurry is applied to the insulating frame and forms a waterproof layer after drying.

[0024] Furthermore, the heating temperature during the preparation of the slurry is 300°C to 350°C.

[0025] Furthermore, the drying temperature of the slurry after being coated on the insulating frame is 50°C to 60°C.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] (1) The present invention coats a waterproof layer on the insulating frame fixed on the platform operation, which can, on the one hand, protect the insulating frame and prevent the insulating frame from getting damp, thereby extending the service life of the insulating frame; on the other hand, it can also avoid the problem that the insulating performance of the insulating frame is reduced after getting damp, which causes certain risks to the workers during use.

[0028] (2) The isocyanate added in the present invention can enhance the bonding performance between diatomaceous earth and propylene glycol alginate, so that the waterproof material slurry can quickly form a waterproof film layer after being coated on the outer surface of the insulating frame. At the same time, the surface of diatomaceous earth contains a large amount of silanol, which has strong reactivity and adsorption, and can be well combined with isocyanate and propylene glycol alginate, playing the role of "molecular bridge", enhancing the bonding force between molecular interfaces, thereby improving the density of the polymer, so that the waterproof layer can play a good waterproof effect.

[0029] (3) The molecular structure of the isocyanate added in the present invention contains a -N=C=O structure, which is active and easy to polymerize. The wood material contains cellulose. The cellulose in the wood material reacts with the isocyanate to form a closed cyclic intermediate. The cyclic intermediate can further react with the cellulose in the wood material to form an amino acid formate, which then reacts with a carboxylic acid to form a polyurethane. The polyurethane can react with the hydroxyl groups on the surface of the wood to form amino formate and polyurethane. The polyurethane can form a continuous polymer film on the surface of the wood, thereby increasing the bonding force between the waterproof film formed by diatomaceous earth and propylene glycol alginate and the wood substrate, improving the bonding strength of the waterproof layer, and further protecting the insulating frame, preventing the insulating frame from being damp, and reducing the risks of workers during work.

[0030] (4) The method for improving diatomaceous earth in the present invention can increase the porosity of diatomaceous earth, thereby improving its ability to adsorb propanediol alginate, further enhancing the compactness of the waterproof layer and improving the waterproof performance. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Therefore, the detailed description of the embodiments of the present invention provided below is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. The waterproof material includes 5% isocyanate, 30% diatomaceous earth, 5% propylene glycol alginate, and 60% ethylene glycol ether by mass percentage.

[0035] The preparation method of the waterproof material is as follows:

[0036] S1, immersing the diatomaceous earth completely in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0037] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0038] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0039] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0040] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0041] Example 2

[0042] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Embodiment 1, the formula of the waterproof material in this embodiment is different. The formula of the waterproof material in this embodiment is: 7% isocyanate, 35% diatomaceous earth, 8% propylene glycol alginate, and 50% ethylene glycol ether.

[0043] The preparation method of the waterproof material is as follows:

[0044] S1, immersing the diatomaceous earth completely in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0045] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0046] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0047] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0048] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0049] Example 3

[0050] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Embodiment 1, the formula of the waterproof material in this embodiment is different. The formula of the waterproof material in this embodiment is: 10% isocyanate, 40% diatomaceous earth, 10% propylene glycol alginate, and 40% ethylene glycol ether.

[0051] The preparation method of the waterproof material is as follows:

[0052] S1, completely immersing the diatomaceous earth in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0053] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0054] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0055] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0056] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0057] Example 4

[0058] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, the organic solvent used in this embodiment is ethanolamine. Calculated by mass percentage, the waterproof material includes 5% isocyanate, 30% diatomaceous earth, 5% propylene glycol alginate, and 60% ethanolamine.

[0059] The preparation method of the waterproof material is as follows:

[0060] S1, completely immersing the diatomaceous earth in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0061] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0062] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethanolamine according to the mass ratio and set aside;

[0063] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethanolamine, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry of a waterproof material for coating an insulating frame;

[0064] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0065] Example 5

[0066] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, the organic solvent used in this embodiment is ethanolamine. Calculated by mass percentage, the waterproof material includes 5% isocyanate, 30% diatomaceous earth, 5% propylene glycol alginate, and 60% styrene.

[0067] The preparation method of the waterproof material is as follows:

[0068] S1, completely immersing the diatomaceous earth in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0069] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0070] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and styrene according to the mass ratio and set aside;

[0071] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate into styrene, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry of a waterproof material for coating an insulating frame;

[0072] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0073] Example 6

[0074] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, the organic ammonium salt used in this embodiment is acryloyloxyethyltrimethylammonium chloride. Calculated by mass percentage, the waterproof material includes 5% isocyanate, 30% diatomaceous earth, 5% propylene glycol alginate, and 60% ethylene glycol ether.

[0075] The preparation method of the waterproof material is as follows:

[0076] S1, completely immersing the diatomaceous earth in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0077] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and acryloyloxyethyl trimethyl ammonium chloride, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearoyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0078] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0079] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0080] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0081] Example 7

[0082] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, the organic ammonium salt used in this embodiment is tetrabutylammonium hexafluorophosphate. Calculated by mass percentage, the waterproof material includes 5% isocyanate, 30% diatomaceous earth, 5% propylene glycol alginate, and 60% ethylene glycol ether.

[0083] The preparation method of the waterproof material is as follows:

[0084] S1, completely immersing the diatomaceous earth in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0085] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium hexafluorophosphate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearoyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0086] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0087] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0088] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0089] Example 8

[0090] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, the thickness of the waterproof layer prepared in this embodiment is 4 mm. Calculated by mass percentage, the waterproof material includes 5% isocyanate, 30% diatomaceous earth, 5% propylene glycol alginate, and 60% ethylene glycol ether.

[0091] The preparation method of the waterproof material is as follows:

[0092] S1, completely immersing the diatomaceous earth in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0093] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0094] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0095] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0096] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 4 mm waterproof layer.

[0097] Example 9

[0098] This embodiment provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, the thickness of the waterproof layer prepared in this embodiment is 6 mm. Calculated by mass percentage, the waterproof material includes 5% isocyanate, 30% diatomaceous earth, 5% propylene glycol alginate, and 60% ethylene glycol ether.

[0099] The preparation method of the waterproof material is as follows:

[0100] S1, completely immersing the diatomaceous earth in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0101] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0102] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0103] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0104] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 6 mm waterproof layer.

[0105] Comparative Example 1

[0106] This comparative example provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, the formula of the waterproof material in this comparative example is different. This comparative example does not contain isocyanate. The formula of the waterproof material in this comparative example is: in terms of mass percentage, the waterproof material includes 30% diatomaceous earth, 10% propylene glycol alginate, and 60% ethylene glycol ether.

[0107] The preparation method of the waterproof material is as follows:

[0108] S1, immersing the diatomaceous earth completely in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water (the volume ratio of hydroxypropyl β-cyclodextrin to ammonia water is 1:3), then taking it out and drying it to obtain the pretreated diatomaceous earth;

[0109] S2, the pretreated diatomaceous earth is placed in an aqueous solution of polyethylene glycol and tetrabutylammonium tetrafluoroborate, heated to 45°C and then kept warm, and then a titanate coupling agent (isopropyl tri(isostearyl) titanate) is added, and heated at 50°C for 40 minutes, and the diatomaceous earth is filtered out and dried at 40°C to obtain modified diatomaceous earth;

[0110] S3. Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0111] S4, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material for an insulating frame;

[0112] S5. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0113] Comparative Example 2

[0114] This comparative example provides a waterproof material for coating the outer surface of an insulating frame and a preparation method thereof. Different from Example 1, during the preparation process, the diatomaceous earth in this comparative example is not modified.

[0115] The preparation method of the waterproof material is as follows:

[0116] S1. Weigh isocyanate, diatomaceous earth, propylene glycol alginate and ethylene glycol ether according to mass ratio and set aside;

[0117] S2, adding isocyanate, modified diatomaceous earth and propylene glycol alginate to ethylene glycol ether, heating to 300° C., stirring, preparing a slurry, and obtaining a slurry for coating a waterproof material of an insulating frame;

[0118] S3. Apply the prepared slurry to a sample plate made of the same material as the insulating frame, and dry it at 50°C to form a 3 mm waterproof layer.

[0119] The performance of the waterproof layers prepared in the above embodiments and comparative examples were tested respectively, and the test results are shown in Table 1 below.

[0120] Test method:

[0121] 1. Water absorption: refer to GB55030-2022.

[0122] 2. Impermeability: Use an impermeability test mold and test according to GB23440-2009 inorganic waterproof plugging materials, and observe and record its penetration conditions.

[0123] 3. Tensile bond strength: refer to JG / T70-2009.

[0124] Table 1

[0125]

[0126] From the above test results, it can be seen that the waterproof layer prepared by the method of the present invention has good waterproof performance and high tensile bonding strength. Compared with Comparative Example 1, no isocyanate was added in Comparative Example 1, and the waterproof performance and tensile bonding strength of the waterproof layer prepared therein were inferior to all the embodiments of the present invention. Compared with Comparative Example 2, the diatomaceous earth in Comparative Example 2 was not treated, and the waterproof performance and tensile bonding strength of the waterproof layer prepared therein were also inferior to all the embodiments of the present invention. Therefore, it is confirmed that the waterproof layer prepared by the method of the present application has good waterproof performance and tensile bonding strength, which can not only be used for fixing the insulating frame for platform operations, preventing the insulating frame from getting damp, and improving the safety performance of the insulating frame during use, but can also be used on other woods that need to be waterproof, and has a wide range of applications.

[0127] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only the specific embodiments of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present application.

Claims

1. A waterproof material for coating the outer surface of an insulating frame, characterized in that: The insulating frame is made of wood material. Calculated by mass percentage, the waterproof material includes 5% to 10% of isocyanate, 30% to 40% of diatomaceous earth, 5% to 10% of propylene glycol alginate, and the remainder is an organic solvent. The waterproof material containing the above ingredients is prepared into a slurry and coated on the outer surface of the insulating frame to form a waterproof layer.

2. The waterproof material for coating the outer surface of an insulating frame according to claim 1, characterized in that: The organic solvent includes ethylene glycol ether, ethanolamine or styrene.

3. The waterproof material for coating the outer surface of an insulating frame according to claim 1, characterized in that: The thickness of the waterproof layer is 3 to 6 mm.

4. The waterproof material for coating the outer surface of an insulating frame according to claim 1, characterized in that: The diatomaceous earth is modified diatomaceous earth modified by a mixed solution of hydroxypropyl β-cyclodextrin and ammonia water.

5. The waterproof material for coating the outer surface of an insulating frame according to claim 4, characterized in that: The modification method of the modified diatomite comprises the following steps: The diatomaceous earth is completely immersed in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water, and then taken out and dried to obtain the pretreated diatomaceous earth; The pretreated diatomaceous earth is placed in a polyethylene glycol and organic ammonium salt aqueous solution, heated to 45-50°C and then kept warm, and then a titanate coupling agent is added, and heated at 50-55°C for 40-60 minutes. The diatomaceous earth is filtered out and dried at 40-50°C to obtain modified diatomaceous earth.

6. The waterproof material for coating the outer surface of an insulating frame according to claim 5, characterized in that: The organic ammonium salt includes tetrabutylammonium tetrafluoroborate, acryloyloxyethyltrimethylammonium chloride or tetrabutylammonium hexafluorophosphate.

7. The waterproof material for coating the outer surface of an insulating frame according to claim 5, characterized in that: The volume ratio of the hydroxypropyl beta-cyclodextrin to ammonia water is 1:

3.

8. A method for preparing a waterproof material for coating the outer surface of an insulating frame, characterized in that: The following steps are involved: The diatomaceous earth is completely immersed in a mixed solution containing hydroxypropyl β-cyclodextrin and ammonia water, and then taken out and dried to obtain the pretreated diatomaceous earth; The pretreated diatomaceous earth is placed in a polyethylene glycol and organic ammonium salt aqueous solution, heated to 45-50°C and then kept warm, and then a titanate coupling agent is added, and heated at 50-55°C for 40-60 minutes, and the diatomaceous earth is filtered out and dried at 40-50°C to obtain modified diatomaceous earth; Weigh isocyanate, modified diatomaceous earth, propylene glycol alginate and organic solvent according to mass ratio and set aside; Adding isocyanate, modified diatomaceous earth and propylene glycol alginate into an organic solvent, heating and stirring to prepare a slurry, thereby obtaining a slurry of waterproof material for coating an insulating frame; The prepared slurry is applied to the insulating frame and forms a waterproof layer after drying.

9. The method for preparing a waterproof material for coating the outer surface of an insulating frame according to claim 8, characterized in that: The heating temperature during the preparation of the slurry is 300°C to 350°C.

10. The method for preparing a waterproof material for coating the outer surface of an insulating frame according to claim 8, characterized in that: The drying temperature after the slurry is coated on the insulating frame is 50°C to 60°C.

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