CN115646654B - Flame-retardant conductive silicon rubber anode film for wet electric precipitation and preparation method thereof - Google Patents
Flame-retardant conductive silicon rubber anode film for wet electric precipitation and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the field of wet electric precipitation, in particular to a flame-retardant conductive silicon rubber anode film for wet electric precipitation and a preparation method thereof. The invention provides a flame-retardant conductive silicon rubber anode film for wet electric dust removal, which comprises, by weight, 45-60% of silicon rubber, 10-25% of flame retardant, 20-35% of conductive material, 0.2-1.5% of coupling agent, 0.2-1.5% of crosslinking auxiliary agent, 0.4-2.0% of structuring control agent and 0.2-1.5% of vulcanizing agent. The flame-retardant and conductive silicon rubber anode film for wet electric dust removal provided by the invention has the flame-retardant grade reaching UL94V-0 level, the surface resistivity being lower than 1000 omega, and meanwhile, 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 due to superhydrophobicity (ash) 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 electric precipitation, in particular to a flame-retardant conductive silicon rubber anode film for wet electric precipitation and a preparation method thereof.
Background
The disclosure of this background section is only intended to increase the 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 already known to those of ordinary skill in the art.
The wet electrostatic dust collection technology has become a widely adopted technology for domestic waste gas treatment, and industrial application shows that the wet electrostatic dust collector has good removal effect on fine dust, organic harmful gas and a small amount of heavy metals such as lead, mercury and the like in waste gas.
The anode plate of the wet electrostatic dust collection system is made of glass fiber reinforced plastic, fiber fabric, metal and the like. In recent years, with increasing safety awareness, indexes such as flame retardance, antistatic property and the like of an anode plate of a wet electric dust collector become mandatory requirements of industry. The prior art "a method of processing a fibrous web" (CN 112011879B) provides a method of processing a flame retardant fibrous web for use as a wet electrostatic precipitator anode plate. However, in the practical application process, the main stream flame retardant, namely the phosphorus flame retardant, used for the flame-retardant fiber at present cannot withstand the polyacid corrosion environment after wet desulfurization for a long period, and the rapid aging of the fiber fabric is shown.
Meanwhile, as is known in the art, the wet type electric precipitator plates must have electrical conductivity in the operating state to release the charge of the trapped dust. Whereas conventional fibrous fabric plates are insulating materials in the dry state, their conductivity depends on their surface water films. This has high requirements on the hydrophilicity, self-cleaning properties and the water (wet) content of the gas entering the electric dust collector of the fibrous fabric electrode plate. For example, when the moisture (humidity) rate of the dust-containing gas entering the wet electric dust collector is low, the water distribution amount or the water distribution frequency of the fiber fabric polar plate needs to be increased so as to maintain the surface water film. This results in an increase in water consumption and waste water. Therefore, an anode film which is self-conductive and has self-cleaning performance becomes 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 conductive silicon rubber anode film for wet electric precipitation and a preparation method thereof.
In order to achieve the above object, the present invention is realized by the following technical scheme:
in a first aspect, the invention provides a flame-retardant conductive silicon rubber anode film for wet electric precipitation, which comprises the following components in parts by weight:
45-60% of silicone rubber, 10-25% of flame retardant, 20-35% of conductive material, 0.2-1.5% of coupling agent, 0.2-1.5% of crosslinking auxiliary agent, 0.4-2.0% of structuring control agent and 0.2-1.5% of vulcanizing agent.
In a second aspect, the invention provides a preparation method of the flame-retardant conductive silicone rubber anode film for wet electric precipitation, which specifically comprises the following steps:
uniformly mixing silicone rubber, a flame retardant, a conductive material, a coupling agent, a crosslinking auxiliary agent and a structuring control agent, adding a vulcanizing agent, and vulcanizing at a high temperature to form a film.
In a third aspect, the invention provides an application of the flame-retardant and conductive silicon rubber anode film for wet electric precipitation in wet electric precipitation.
The beneficial effects obtained by one or more of the technical schemes of the invention are as follows:
the flame-retardant and conductive silicon rubber anode film for wet electric dust removal provided by the invention has the flame-retardant grade reaching UL94V-0 level, the surface resistivity being lower than 1000 omega, and meanwhile, 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 due to superhydrophobicity (ash) 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 should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. 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 present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In one or more exemplary embodiments of the present invention, there is provided a flame retardant, conductive silicone rubber anode film for wet electric precipitation, comprising the following components in parts by weight:
45-60% of silicone rubber, 10-25% of flame retardant, 20-35% of conductive material, 0.2-1.5% of coupling agent, 0.2-1.5% of crosslinking auxiliary agent, 0.4-2.0% of structuring control agent and 0.2-1.5% 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 trifluoropropyl vinyl silicone rubber, methyl ethyl vinyl silicone rubber.
The silicon rubber is linear semi-inorganic polymer rubber with a main chain composed of silicon and oxygen atoms alternately, wherein the silicon atoms are usually connected with two organic groups. Because the main chain of the silicon rubber is formed by Si-O bonds, the bond energy is large compared with the C-C structure of the traditional rubber, so that the silicon rubber has a plurality of unique and excellent properties, such as high and low temperature resistance, can generally work for a long time at the temperature of-40 to 180 ℃, and has the properties 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 nano-scale active 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, graphite carbon black; preferably, it is nano-scale graphite carbon black.
In one or more exemplary embodiments of the present invention, the vulcanizing agent is one of a peroxide vulcanizing agent and a noble metal vulcanizing agent; preferably, dicumyl peroxide (DCP).
In one or more exemplary embodiments of the present invention, a preparation method of the flame-retardant, conductive silicone rubber anode film for wet electric precipitation is provided, which specifically comprises:
uniformly mixing silicone rubber, a flame retardant, a conductive material, a coupling agent, a crosslinking auxiliary agent and a structuring control agent, 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 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 25 minutes.
In one or more exemplary embodiments of the present invention, there are provided the flame retardant, conductive silicone rubber anode film for wet electric precipitation and the use of the product prepared by the preparation method in wet electric precipitation.
The invention is further illustrated by the following examples, which are not to be construed as limiting the invention. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. The following examples are test methods in which specific conditions are noted, and are generally conducted under conventional conditions.
Example 1
The flame-retardant conductive methyl vinyl silicone rubber anode film for wet electric precipitation is prepared by the following preparation method: 47% of methyl vinyl silicone rubber, 21% of flame retardant nanoscale active aluminum hydroxide, 30% of conductive material nanoscale graphite carbon black, 0.5% of coupling agent, 0.5% of crosslinking auxiliary agent and 0.6% of structuring control agent are mixed for 1h to be uniformly mixed, and then 0.4% of vulcanizing agent DCP is added to be vulcanized for 20min at 175 ℃ to form the film. The prepared flame-retardant and conductive methyl vinyl silicone rubber anode film for wet electric precipitation is tested, and the test results are shown in table 1.
Table 1 example 1 test results
| Sequence number | Inspection item | Technical index | Verification data |
| 1 | Hardness of | Not less than 50 DEG | 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 | v-0 grade | v-0 |
| 7 | Static contact angle | The minimum value is more than or equal to 90 DEG | 95 |
Example 2
The flame-retardant conductive methyl phenyl vinyl silicone rubber anode film for wet electric precipitation is prepared by the following preparation method: 47% of methyl phenyl vinyl silicone rubber, 21% of flame retardant nanoscale active aluminum hydroxide, 30% of conductive material nanoscale graphite carbon black, 0.5% of coupling agent, 0.5% of crosslinking auxiliary agent and 0.6% of structuring control agent are mixed for 1h to be uniformly mixed, and then 0.4% of vulcanizing agent DCP is added to be vulcanized for 20min at 175 ℃ to form the film. The prepared flame-retardant and conductive methyl phenyl vinyl silicone rubber anode film for wet electric precipitation is tested, and the test results are shown in table 2.
Table 2 example 2 results of the test
| Sequence number | Inspection item | Technical index | Verification data |
| 1 | Hardness of | Not less than 50 DEG | 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 | v-0 grade | v-0 |
| 7 | Static contact angle | The minimum value is more than or equal to 90 DEG | 101 |
Example 3
The flame-retardant conductive methyl trifluoropropyl vinyl silicone rubber anode for wet electric precipitation is prepared by the following preparation method: 47% of methyl trifluoropropyl vinyl silicone rubber, 21% of flame retardant nanoscale active aluminum hydroxide, 30% of conductive material nanoscale graphite carbon black, 0.5% of coupling agent, 0.5% of crosslinking auxiliary agent and 0.6% of structuring control agent are mixed for 1h to be uniformly mixed, and then 0.4% of vulcanizing agent DCP is added to be vulcanized for 20min at 175 ℃ to form a film. The prepared flame-retardant and conductive methyl trifluoropropyl vinyl silicone rubber anode film for wet electric precipitation was tested, and the test results are shown in table 3.
TABLE 3 example 3 results of the test
| Sequence number | Inspection item | Technical index | Verification data |
| 1 | Hardness of | Not less than 50 DEG | 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 | v-0 grade | v-0 |
| 7 | Static contact angle | The minimum value is more than or equal to 90 DEG | 105 |
Example 4
The flame-retardant conductive methyl ethyl vinyl silicone rubber anode film for wet electric precipitation is prepared by the following preparation method: 47% of methyl ethyl vinyl silicone rubber, 21% of flame retardant nanoscale active aluminum hydroxide, 30% of conductive material nanoscale graphite carbon black, 0.5% of coupling agent, 0.5% of crosslinking auxiliary agent and 0.6% of structuring control agent are mixed for 1h to be uniformly mixed, and then 0.4% of vulcanizing agent DCP is added to be vulcanized for 20min at 175 ℃ to form the film. The prepared flame-retardant and conductive methyl phenyl vinyl silicone rubber anode film for wet electric precipitation was tested, and the test results are shown in table 4.
Table 4 example 4 test results
| Sequence number | Inspection item | Technical index | Verification data |
| 1 | Hardness of | Not less than 50 DEG | 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 | v-0 grade | v-0 |
| 7 | Static contact angle | The minimum value is more than or equal to 90 DEG | 97 |
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. 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 conductive silicon rubber anode film for wet electric precipitation is characterized by comprising the following components in parts by weight:
45-60% of silicone rubber, 10-25% of flame retardant, 20-35% of conductive material, 0.2-1.5% of coupling agent, 0.2-1.5% of crosslinking auxiliary agent, 0.4-2.0% of structuring control agent and 0.2-1.5% of vulcanizing agent.
2. The flame retardant, electrically conductive silicone rubber anode film for wet electrostatic precipitator of claim 1, wherein said 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 and conductive silicon rubber anode film for wet electric precipitation according to claim 1, wherein the flame retardant is one or more of magnesium hydroxide, aluminum hydroxide and zinc borate; preferably, it is nano-scale active aluminum hydroxide.
4. The flame-retardant conductive silicone rubber anode film for wet electric precipitation according to claim 1, wherein 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 nano-scale graphite carbon black.
5. The flame-retardant and conductive silicon rubber anode film for wet electric precipitation 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. A method for preparing a flame-retardant and conductive silicon rubber anode film for wet electric precipitation as claimed in any one of claims 1-5, which is characterized by comprising the following steps:
uniformly mixing silicone rubber, a flame retardant, a conductive material, a coupling agent, a crosslinking auxiliary agent and a structuring control agent, adding a vulcanizing agent, and vulcanizing at a high temperature to form a film.
7. The method for preparing a flame retardant and conductive silicon rubber anode film for wet electric precipitation according to claim 6, wherein the mixing time is 0.5-1.5 h.
8. The method for preparing a flame retardant and conductive silicon rubber anode film for wet electric precipitation according to claim 6, wherein the high temperature vulcanization temperature is 170-180 ℃.
9. The method for preparing a flame retardant and conductive silicon rubber anode film for wet electric precipitation according to claim 6, wherein the high temperature vulcanization time is 10-25 min.
10. Use of the flame retardant, electrically conductive silicone rubber anode film for wet electric precipitation as claimed in any one of claims 1 to 5 and the product obtained by the preparation method as claimed in any one of claims 6 to 9 in wet electric precipitation.
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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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