CN115646654A - Flame-retardant and conductive silicone rubber anode film for wet electric dust removal and preparation method thereof - Google Patents
Flame-retardant and conductive silicone rubber anode film for wet electric dust removal and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the field of wet-type electric precipitation, and relates to a flame-retardant and conductive silicone rubber anode membrane for wet electric precipitation and a preparation method thereof. The flame-retardant and conductive silicone rubber anode film for wet electric dust removal comprises, by weight, 45-60% of silicone rubber, 10-25% of a flame retardant, 20-35% of a conductive material, 0.2-1.5% of a coupling agent, 0.2-1.5% of a crosslinking assistant, 0.4-2.0% of a structural control agent and 0.2-1.5% of a vulcanizing agent. The flame-retardant and conductive silicone rubber anode film for wet electric dust removal provided by the invention has the flame-retardant grade up to UL94V-0 grade and the surface resistivity lower than 1000Omega, simultaneously, because of super-hydrophobic (gray), the static contact angle is more than or equal to 90 degrees, the thickness is less than 2mm, and the density is less than 1.2g/cm 3 Compared with the traditional anode plate material, the material has the characteristics of safety, light weight, high efficiency and the like.
Description
Technical Field
The invention relates to the field of wet-type electric precipitation, and relates to a flame-retardant and conductive silicone rubber anode membrane for wet electric precipitation and a preparation method thereof.
Background
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The wet electrostatic dust removal technology has become a widely adopted technology for domestic waste gas treatment, and industrial application shows that the wet electrostatic dust remover has a good removal effect on fine dust, organic harmful gases, a small amount of heavy metals such as lead, mercury and the like in waste gas.
The anode plate material of the wet electrostatic dust collection system generally adopts glass fiber reinforced plastic, fiber fabric, metal and other materials. In recent years, with the increasing safety awareness, indexes such as flame retardance, antistatic property and the like of the anode plate of the wet electric dust collector have become mandatory requirements of the industry. The prior art "a processing method of fiber fabric" (CN 112011879B) provides a processing method of flame-retardant fiber fabric used as an anode plate of wet electric precipitation. However, in the practical application process, the phosphorus flame retardant, which is the mainstream flame retardant used in the conventional flame-retardant fiber, cannot endure the polyacid corrosion environment after wet desulphurization for a long period, and is shown as rapid aging of the fiber fabric.
Meanwhile, as is known in the art, the plates of the wet electric dust collector must have conductivity in an operating state to release charges of trapped dust. While the traditional fiber fabric polar plate belongs to an insulating material in a dry state, the conductivity of the traditional fiber fabric polar plate depends on the surface water film. This has higher requirements on the hydrophilicity and self-cleaning property of the fiber fabric polar plate and the water (moisture) rate of the gas entering the electric dust collector. For example, when the moisture (wet) rate of the dust-containing gas entering the wet electric dust collector is low, the water distribution amount or frequency of the fiber fabric plate needs to be increased to maintain the surface water film. This results in an increase in water consumption and wastewater volume. Therefore, an anode film which is self-conductive and has self-cleaning performance is a new technical requirement.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a flame-retardant and conductive silicone rubber anode film for wet electric dust removal and a preparation method thereof.
In order to realize the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides a flame-retardant and conductive silicone rubber anode film for wet electro-dusting, which comprises the following components in parts by weight:
45 to 60 percent of silicon rubber, 10 to 25 percent of flame retardant, 20 to 35 percent of conductive material, 0.2 to 1.5 percent of coupling agent, 0.2 to 1.5 percent of crosslinking assistant, 0.4 to 2.0 percent of structural control agent and 0.2 to 1.5 percent of vulcanizing agent.
In a second aspect, the invention provides a preparation method of the flame-retardant and conductive silicone rubber anode membrane for wet electric dust removal, which specifically comprises the following steps:
uniformly mixing the silicon rubber, the flame retardant, the conductive material, the coupling agent, the crosslinking assistant and the structural control agent, then adding the vulcanizing agent, and vulcanizing at high temperature to form a film.
In a third aspect, the invention provides an application of the flame-retardant and conductive silicone rubber anode film for wet electric dust removal in wet electric dust removal.
The beneficial effects obtained by one or more technical schemes of the invention are as follows:
the flame-retardant and conductive silicone rubber anode film for wet electric dust removal provided by the invention has the flame retardant grade reaching UL94V-0 grade, the surface resistivity lower than 1000 omega, and simultaneously, due to super-hydrophobicity (ash), the static contact angle is more than or equal to 90 degrees, the thickness is less than 2mm, and the density is less than 1.2g/cm 3 Compared with the traditional anode plate material, the material has the characteristics of safety, light weight, high efficiency and the like.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In one or more exemplary embodiments of the present invention, there is provided a flame retardant, electrically conductive silicone rubber anodic film for wet electro-dusting, comprising the following components in parts by weight:
45 to 60 percent of silicon rubber, 10 to 25 percent of flame retardant, 20 to 35 percent of conductive material, 0.2 to 1.5 percent of coupling agent, 0.2 to 1.5 percent of crosslinking assistant, 0.4 to 2.0 percent of structural control agent and 0.2 to 1.5 percent of vulcanizing agent.
In one or more exemplary embodiments of the present invention, the silicone rubber is one or more of methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, methyl trifluoro propyl vinyl silicone rubber, and methyl ethyl vinyl silicone rubber.
Silicone rubber refers to a linear semi-inorganic polymeric rubber having a backbone composed of alternating silicon and oxygen atoms, with the silicon atoms typically having two organic groups attached thereto. Because the main chain of the silicon rubber is composed of Si-O bonds, compared with the C-C structure of the traditional rubber, the silicon rubber has large bond energy, so that the silicon rubber has a plurality of unique and excellent performances, such as high and low temperature resistance, can generally work at the temperature of minus 40-180 ℃ for a long time, and simultaneously has the performances of ultraviolet resistance, irradiation resistance, weather resistance and the like.
In one or more exemplary embodiments of the present invention, the flame retardant is one or more of magnesium hydroxide, aluminum hydroxide, zinc borate; preferably, it is nanoscale activated aluminum hydroxide.
In one or more exemplary embodiments of the present invention, the conductive material is one or more of silver glass plating, silver aluminum plating, silver particles, carbon nanotubes, and graphite carbon black; preferably, it is a nano-sized graphite carbon black.
In one or more exemplary embodiments of the present invention, the vulcanizing agent is one of a peroxide vulcanizing agent, a noble metal vulcanizing agent; preferably, dicumyl peroxide (DCP).
In one or more exemplary embodiments of the present invention, a method for preparing the flame-retardant and electrically conductive silicone rubber anodic film for wet electro-dusting is provided, which specifically comprises:
uniformly mixing the silicon rubber, the flame retardant, the conductive material, the coupling agent, the crosslinking assistant and the structural control agent, then adding a vulcanizing agent, and vulcanizing at a high temperature to form a film.
In one or more exemplary embodiments of the invention, the mixing time of the components is 0.5 to 1.5 hours.
In one or more exemplary embodiments of the present invention, the high temperature vulcanization temperature is 170 to 180 ℃.
In one or more exemplary embodiments of the present invention, the high temperature vulcanization time is 10 to 25min.
In one or more exemplary embodiments of the present invention, the flame-retardant and electrically conductive silicone rubber anode film for wet electric dust removal and the application of the product prepared by the preparation method in wet electric dust removal are provided.
The invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The following examples are test methods in which specific conditions are indicated, and are generally carried out under conventional conditions.
Example 1
A flame-retardant and conductive methyl vinyl silicone rubber anode membrane for wet electric dust removal is prepared by the following preparation method: 47 percent of methyl vinyl silicone rubber, 21 percent of flame retardant nano-scale active aluminum hydroxide, 30 percent of conductive material nano-scale graphite carbon black, 0.5 percent of coupling agent, 0.5 percent of cross-linking assistant and 0.6 percent of structural control agent are mixed for 1 hour to be evenly mixed, then 0.4 percent of vulcanizing agent DCP is added to be vulcanized for 20 minutes at 175 ℃ to form a film. The prepared flame-retardant and conductive methyl vinyl silicone rubber anode membrane for wet electric dust removal is tested, and the test result is shown in table 1.
Table 1 example 1 test results
| Serial number | Inspection item | Technical index | Checking data |
| 1 | Hardness of | Not less than 50 DEG C | 55 |
| 2 | Tensile strength | >4MPa | 5.5 |
| 3 | Elongation at break | >150％ | 255 |
| 4 | Tear strength | ≥10KN/m | 15.7 |
| 5 | Surface resistivity | ≤1000Ω | 700 |
| 6 | Flammability of | Class v-0 | v-0 |
| 7 | Static contact angle | Minimum value is greater than or equal to 90 ° | 95 |
Example 2
A flame-retardant and conductive methyl phenyl vinyl silicone rubber anode film for wet electric dust removal is prepared by the following preparation method: 47 percent of methyl phenyl vinyl silicone rubber, 21 percent of flame retardant nano-grade active aluminum hydroxide, 30 percent of conductive material nano-grade graphite carbon black, 0.5 percent of coupling agent, 0.5 percent of crosslinking assistant and 0.6 percent of structural control agent are mixed for 1 hour to be uniformly mixed, then 0.4 percent of vulcanizing agent DCP is added, and vulcanization is carried out for 20 minutes at 175 ℃ to form a film. The prepared flame-retardant and conductive methyl phenyl vinyl silicone rubber anode film for wet electro-dusting was examined, and the examination results are shown in table 2.
Table 2 example 2 test results
| Serial number | Inspection item | Technical index | Checking data |
| 1 | Hardness of | Not less than 50 DEG C | 60 |
| 2 | Tensile strength | >4MPa | 5.7 |
| 3 | Elongation at break | >150％ | 260 |
| 4 | Tear strength | ≥10KN/m | 17.2 |
| 5 | Surface resistivity | ≤1000Ω | 600 |
| 6 | Flammability of | Class v-0 | v-0 |
| 7 | Static contact angle | Minimum value is greater than or equal to 90 ° | 101 |
Example 3
A flame-retardant and conductive methyl trifluoro propyl vinyl silicone rubber anode for wet electric dust removal is prepared by the following preparation method: 47 percent of methyl trifluoro propyl vinyl silicone rubber, 21 percent of flame retardant nano active aluminum hydroxide, 30 percent of conductive material nano graphite carbon black, 0.5 percent of coupling agent, 0.5 percent of crosslinking assistant and 0.6 percent of structural control agent are mixed for 1 hour to be uniformly mixed, then 0.4 percent of vulcanizing agent DCP is added, and the mixture is vulcanized for 20 minutes at 175 ℃ to form a film. The prepared flame-retardant and conductive methyltrifluoropropyl vinyl silicone rubber anode membrane for wet electric dust removal is tested, and the test result is shown in table 3.
Table 3 example 3 test results
| Serial number | Inspection item | Technical index | Checking data |
| 1 | Hardness of | Not less than 50 DEG C | 58 |
| 2 | Tensile strength | >4MPa | 5.9 |
| 3 | Elongation at break | >150％ | 274 |
| 4 | Tear strength | ≥10KN/m | 16.9 |
| 5 | Surface resistivity | ≤1000Ω | 650 |
| 6 | Flammability of | Grade v-0 | v-0 |
| 7 | Static contact angle | Minimum value is greater than or equal to 90 ° | 105 |
Example 4
A flame-retardant and conductive methyl ethyl vinyl silicone rubber anode membrane for wet electric dust removal is prepared by the following preparation method: 47 percent of methyl ethyl vinyl silicone rubber, 21 percent of flame retardant nano-scale active aluminum hydroxide, 30 percent of conductive material nano-scale graphite carbon black, 0.5 percent of coupling agent, 0.5 percent of cross-linking assistant and 0.6 percent of structural control agent are mixed for 1 hour to be evenly mixed, then 0.4 percent of vulcanizing agent DCP is added to be vulcanized for 20 minutes at 175 ℃ to form a film. The prepared flame-retardant and conductive methyl phenyl vinyl silicone rubber anode film for wet electro-dusting was examined, and the examination results are shown in table 4.
Table 4 example 4 test results
| Serial number | Inspection item | Technical index | Checking data |
| 1 | Hardness of | Not less than 50 DEG C | 54 |
| 2 | Tensile strength | >4MPa | 5.5 |
| 3 | Elongation at break | >150％ | 255 |
| 4 | Tear strength | ≥10KN/m | 13.6 |
| 5 | Surface resistivity | ≤1000Ω | 740 |
| 6 | Flammability of | Class v-0 | v-0 |
| 7 | Static contact angle | Minimum value is greater than or equal to 90 ° | 97 |
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The flame-retardant and conductive silicone rubber anode film for wet electric dust removal is characterized by comprising the following components in parts by weight:
45 to 60 percent of silicon rubber, 10 to 25 percent of flame retardant, 20 to 35 percent of conductive material, 0.2 to 1.5 percent of coupling agent, 0.2 to 1.5 percent of crosslinking assistant, 0.4 to 2.0 percent of structural control agent and 0.2 to 1.5 percent of vulcanizing agent.
2. The flame-retardant, electrically conductive silicone rubber anodic film for wet electro-dusting according to claim 1, wherein the silicone rubber is one or more of methyl vinyl silicone rubber, methyl phenyl vinyl silicone rubber, methyl trifluoropropyl vinyl silicone rubber, methyl ethyl vinyl silicone rubber.
3. The flame-retardant, electrically conductive silicone rubber anodic film for wet electro-dusting as claimed in claim 1, wherein the flame retardant is one or more of magnesium hydroxide, aluminum hydroxide, zinc borate; preferably, it is a nanoscale activated aluminum hydroxide.
4. The flame retardant, electrically conductive silicone rubber anodic film for wet electro-dusting as claimed in claim 1 wherein the electrically conductive material is one or more of silver-plated glass, silver-plated aluminum, silver particles, carbon nanotubes, graphite carbon black; preferably, it is a nano-sized graphite carbon black.
5. The flame-retardant, electrically conductive silicone rubber anodic film for wet electro-dusting according to claim 1, wherein the vulcanizing agent is one of a peroxide vulcanizing agent and a noble metal vulcanizing agent; preferably, dicumyl peroxide.
6. The preparation method of the flame-retardant and conductive silicone rubber anode membrane for wet electro-dusting according to any one of claims 1 to 5, which is characterized by comprising the following steps:
uniformly mixing the silicon rubber, the flame retardant, the conductive material, the coupling agent, the crosslinking assistant and the structural control agent, then adding the vulcanizing agent, and vulcanizing at high temperature to form a film.
7. The method for preparing a flame-retardant, electrically conductive silicone rubber anodic film for wet electro-dusting as claimed in claim 6, wherein the mixing time is from 0.5 to 1.5 hours.
8. The method for preparing a flame-retardant, electrically conductive silicone rubber anodic film for wet electro-dusting as claimed in claim 6, wherein the high temperature vulcanization temperature is 170-180 ℃.
9. The method for preparing a flame-retardant, electrically conductive silicone rubber anodic film for wet electro-dusting as claimed in claim 6, wherein the high temperature vulcanization time is 10 to 25min.
10. The use of the flame-retardant, electrically conductive silicone rubber anodic film for wet electrostatic precipitator according to any one of claims 1 to 5 and the product prepared by the preparation method according to any one of claims 6 to 9 in wet electrostatic precipitator.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002089990A1 (en) * | 2001-05-02 | 2002-11-14 | Midori Anzen Co., Ltd. | Resin electrode and electrostatic dust collector using the same |
| JP2008284515A (en) * | 2007-05-21 | 2008-11-27 | Daicel Polymer Ltd | Member for dust collection element, and dust collection element |
| CN112877034A (en) * | 2021-01-25 | 2021-06-01 | 贝荣佳 | Environment-friendly flame-retardant composite material and preparation method thereof |
| CN113122084A (en) * | 2020-01-11 | 2021-07-16 | 中科(深圳)微能量科学技术研究院有限公司 | Water-based air purification paint and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002089990A1 (en) * | 2001-05-02 | 2002-11-14 | Midori Anzen Co., Ltd. | Resin electrode and electrostatic dust collector using the same |
| JP2008284515A (en) * | 2007-05-21 | 2008-11-27 | Daicel Polymer Ltd | Member for dust collection element, and dust collection element |
| CN113122084A (en) * | 2020-01-11 | 2021-07-16 | 中科(深圳)微能量科学技术研究院有限公司 | Water-based air purification paint and preparation method thereof |
| CN112877034A (en) * | 2021-01-25 | 2021-06-01 | 贝荣佳 | Environment-friendly flame-retardant composite material and preparation method thereof |
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