CN110894336A - High-temperature-resistant flame-retardant environment-friendly capacitor shell material and preparation method thereof - Google Patents
High-temperature-resistant flame-retardant environment-friendly capacitor shell material and preparation method thereof Download PDFInfo
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- CN110894336A CN110894336A CN201911044381.2A CN201911044381A CN110894336A CN 110894336 A CN110894336 A CN 110894336A CN 201911044381 A CN201911044381 A CN 201911044381A CN 110894336 A CN110894336 A CN 110894336A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
- C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
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- C—CHEMISTRY; METALLURGY
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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Abstract
The invention discloses a high-temperature-resistant flame-retardant environment-friendly capacitor shell material which comprises the following raw materials in parts by weight: 55-65 parts of epoxy resin hybrid ABS resin, 25-35 parts of modified mica powder, 10-20 parts of flame retardant modifier, 6-10 parts of silica micropowder, 4-10 parts of nano calcium carbonate and 1-3 parts of lignin powder. The ABS resin has excellent mechanical property and strong acid, alkali and salt corrosion resistance, is a resin material with good comprehensive performance, after the epoxy resin is hybridized and modified, the working temperature of the epoxy resin is between-50 and +180 ℃, the working temperature can reach +250 ℃ for a short time, the modified ABS resin can provide strong temperature-resistant environment in a shell material, and the raw material in the shell material is protected, so that the integral flame retardant property of the material is greatly improved.
Description
Technical Field
The invention relates to the technical field of capacitor shells, in particular to a high-temperature-resistant flame-retardant environment-friendly capacitor shell material and a preparation method thereof.
Background
The capacitor is formed by sandwiching an insulating dielectric between two metal electrodes, when voltage is applied between the two metals, the capacitor can store charge, so the capacitor is an energy storage element, the capacitor is divided into a ceramic capacitor, an electrolytic capacitor, a terylene capacitor and the like according to different manufacturing materials, along with the rapid development of the electronic industry, the requirements of high-level and low-price electronic products are more and more urgent, and the capacitor is used as an electronic basic product, so the requirements on the capacitor are more and more high.
The existing capacitor shell has better flame retardant property under the conventional condition, but the flame retardant property of the shell material is not very good under the high temperature condition, and the flame retardant property is influenced because the raw materials in the shell material are unstable at the high temperature and are dispersed due to combination among the raw materials.
The existing Chinese patent document publication No. CN107325361A discloses a capacitor shell insulating material, which comprises the following raw materials in parts by weight: 30-55 parts of chlorinated butyl rubber; 30-50 parts of silicon dioxide; 8-15 parts of expanded graphite; 20-35 parts of a flame retardant; 4-10 parts of a plasticizer; 10-15 parts of argil; 5-15 parts of mica powder, although the flame retardant added in the document can play a role in flame retardance, the raw materials are conventional, the flame retardance is poor at high temperature, and further improvement treatment is still needed.
Disclosure of Invention
The invention aims to provide a high-temperature-resistant flame-retardant environment-friendly capacitor shell material and a preparation method thereof, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following raw materials in parts by weight:
55-65 parts of epoxy resin hybrid ABS resin, 25-35 parts of modified mica powder, 10-20 parts of flame retardant modifier, 6-10 parts of silica micropowder, 4-10 parts of nano calcium carbonate and 1-3 parts of lignin powder;
the preparation method of the epoxy resin hybrid ABS resin comprises the steps of adding the ABS resin into a magnetic stirrer, adding nonylphenol polyoxyethylene ether, polyvinyl alcohol and absolute ethyl alcohol, stirring at the rotation speed of 200-300r/min for 20-30min, raising the temperature to 85-95 ℃, adding maleic anhydride and azodiisobutyronitrile, continuing stirring for 30-40min, adding the epoxy resin and the polyoxyethylene-polyoxypropylene copolymer, stirring at the rotation speed of 500-900r/min for 5-10h, and after stirring, centrifuging and drying to obtain the epoxy resin hybrid ABS resin.
Preferably, the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following raw materials in parts by weight:
57-63 parts of epoxy resin hybrid ABS resin, 26-33 parts of modified mica powder, 14-19 parts of flame retardant modifier, 7-9 parts of silica micropowder, 5-8 parts of nano calcium carbonate and 2-2.6 parts of lignin powder.
Preferably, the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following raw materials in parts by weight:
60 parts of epoxy resin hybrid ABS resin, 30 parts of modified mica powder, 15 parts of flame retardant modifier, 8 parts of silica micropowder, 7 parts of nano calcium carbonate and 2 parts of lignin powder.
Preferably, the epoxy resin is a glycidylamine epoxy resin.
Preferably, the modified mica powder is modified by placing the mica powder in a coupling agent KH560 solution for ultrasonic dispersion for 20-30min at an ultrasonic power of 250-350W, drying, performing heat and cold exchange treatment, and obtaining the modified mica powder after the treatment is finished.
Preferably, the cold-heat exchange treatment comprises the specific steps of placing the mica powder at-5 ℃ for 10-20min, then placing at 30 ℃ for 15-25min, and repeating for 2-3 times.
Preferably, the preparation method of the flame retardant modifier comprises the steps of adding the inorganic flame retardant into a magnetic stirrer, then adding deionized water, stirring and dispersing for 20-30min at the stirring speed of 220-260r/min, then sequentially adding the sodium silicate solution and the aluminum sulfate solution into the magnetic stirrer, adjusting the pH value to 4.0-5.0, then continuing stirring for 2-3h, and obtaining the flame retardant modifier after stirring, filtering, washing and drying.
Preferably, the inorganic flame retardant is one or more of aluminum hydroxide, magnesium hydroxide, red phosphorus, ammonium polyphosphate, zinc borate and antimony oxide.
The invention also provides a method for preparing the high-temperature-resistant flame-retardant environment-friendly capacitor shell material, which comprises the following steps:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the epoxy resin hybrid ABS resin, the modified mica powder, the flame-retardant modifier, the silicon micropowder, the nano calcium carbonate and the lignin powder in the step one into a high-speed stirrer, increasing the rotating speed to 200 plus materials at 300r/min, stirring for 20-30min, then sending into a double-screw extruder for extrusion, wherein the extrusion temperature is 110 plus materials at 150 ℃, and finally cooling to room temperature to obtain the high-temperature-resistant flame-retardant environment-friendly capacitor shell material.
Compared with the prior art, the invention has the following beneficial effects:
the ABS resin has excellent mechanical property and strong acid, alkali and salt corrosion resistance, is a resin material with good comprehensive performance, after the epoxy resin is hybridized and modified, the working temperature of the epoxy resin is between-50 and +180 ℃, the working temperature can reach +250 ℃ for a short time, the modified ABS resin can provide a strong temperature-resistant environment in a shell material, the raw materials in the shell material are protected, so that the overall flame retardant performance of the material is greatly improved, the added mica powder is used as a filling aid of the material, the raw materials are mutually linked, so that better high temperature-resistant and flame retardant effects are exerted on the basis of the mica powder, and the mica powder has high temperature-resistant and flame retardant performances, can be arranged in the material in a sheet layer form, and is more tightly connected through the interlayer spacing shrinkage after modification, so that the performance of the raw materials is still stable at high temperature, the added flame retardant modifier is an inorganic flame retardant which is modified by a sodium silicate solution and aluminum sulfate to form an aluminum silicate coated inorganic flame retardant, and the aluminum silicate has stable property and is easy to combine with materials such as resin and the like, so that the inorganic flame retardant is promoted to be combined with resin raw materials to a greater extent, the dispersity and the flame retardant stability of the flame retardant are improved, and a good flame retardant effect can be still exerted at high temperature; in addition, the added lignin powder is in a flowing state in the system at high temperature, so that the added lignin powder carries nano calcium carbonate, silicon micropowder and mica powder to be dispersed in the ABS resin matrix, and the flame retardant effect is further achieved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following raw materials in parts by weight:
55 parts of epoxy resin hybrid ABS resin, 25 parts of modified mica powder, 10 parts of flame retardant modifier, 6 parts of silica micropowder, 4 parts of nano calcium carbonate and 1 part of lignin powder;
the preparation method of the epoxy resin hybrid ABS resin comprises the steps of adding the ABS resin into a magnetic stirrer, adding nonylphenol polyoxyethylene ether, polyvinyl alcohol and absolute ethyl alcohol, stirring at a rotating speed of 200r/min for 20min, raising the temperature to 85 ℃, adding maleic anhydride and azodiisobutyronitrile, continuing stirring for 30min, adding the epoxy resin and the polyoxyethylene-polyoxypropylene copolymer, stirring at a rotating speed of 500r/min for 5h, and obtaining the epoxy resin hybrid ABS resin after stirring, centrifuging and drying.
The epoxy resin in this embodiment is a glycidyl amine epoxy resin.
The modification method of the modified mica powder of the embodiment includes that the mica powder is firstly placed in a coupling agent KH560 solution for ultrasonic dispersion for 20min, the ultrasonic power is 250W, then drying is carried out, then, cold and heat exchange treatment is carried out, and the modified mica powder is obtained after the treatment is finished.
The specific steps of the heat exchange treatment in this embodiment are to place the mica powder at-5 ℃ for 10min, then at 30 ℃ for 15min, and repeat the above steps for 2 times.
The preparation method of the flame retardant modifier comprises the steps of adding an inorganic flame retardant into a magnetic stirrer, adding deionized water, stirring and dispersing for 20min at a stirring speed of 220r/min, sequentially adding a sodium silicate solution and an aluminum sulfate solution into the magnetic stirrer, adjusting the pH value to 4.0, continuing stirring for 2h, and obtaining the flame retardant modifier after stirring, filtering, washing and drying.
The inorganic flame retardant of this example was aluminum hydroxide.
The method for preparing the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following steps of:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the epoxy resin hybrid ABS resin, the modified mica powder, the flame-retardant modifier, the silicon micropowder, the nano calcium carbonate and the lignin powder in the step one into a high-speed stirrer, increasing the rotating speed to 200r/min, stirring for 20min, then sending into a double-screw extruder for extrusion, wherein the extrusion temperature is 110 ℃, and finally cooling to room temperature to obtain the high-temperature-resistant flame-retardant environment-friendly capacitor shell material.
Example 2:
the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following raw materials in parts by weight:
65 parts of epoxy resin hybrid ABS resin, 35 parts of modified mica powder, 20 parts of flame retardant modifier, 10 parts of silica micropowder, 10 parts of nano calcium carbonate and 3 parts of lignin powder;
the preparation method of the epoxy resin hybrid ABS resin comprises the steps of adding the ABS resin into a magnetic stirrer, adding nonylphenol polyoxyethylene ether, polyvinyl alcohol and absolute ethyl alcohol, stirring at a rotating speed of 300r/min for 30min, raising the temperature to 95 ℃, adding maleic anhydride and azodiisobutyronitrile, continuing stirring for 40min, adding the epoxy resin and the polyoxyethylene-polyoxypropylene copolymer, stirring at a rotating speed of 900r/min for 10h, and obtaining the epoxy resin hybrid ABS resin after stirring, centrifuging and drying.
The epoxy resin in this embodiment is a glycidyl amine epoxy resin.
The modification method of the modified mica powder of the embodiment includes that the mica powder is firstly placed in a coupling agent KH560 solution for ultrasonic dispersion for 30min, the ultrasonic power is 350W, then drying is carried out, then, cold and heat exchange treatment is carried out, and the modified mica powder is obtained after the treatment is finished.
The specific steps of the heat exchange treatment in this embodiment are to place the mica powder at-5 ℃ for 20min, then at 30 ℃ for 25min, and repeat the above steps for 3 times.
The preparation method of the flame retardant modifier comprises the steps of adding an inorganic flame retardant into a magnetic stirrer, adding deionized water, stirring and dispersing for 30min at the stirring speed of 260r/min, sequentially adding a sodium silicate solution and an aluminum sulfate solution into the magnetic stirrer, adjusting the pH value to 5.0, continuing stirring for 3h, and obtaining the flame retardant modifier after stirring, filtering, washing and drying.
The inorganic flame retardant of this example was aluminum hydroxide.
The method for preparing the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following steps of:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the epoxy resin hybrid ABS resin, the modified mica powder, the flame-retardant modifier, the silicon micropowder, the nano calcium carbonate and the lignin powder in the step one into a high-speed stirrer, increasing the rotating speed to 300r/min, stirring for 30min, then sending into a double-screw extruder for extrusion, wherein the extrusion temperature is 150 ℃, and finally cooling to room temperature to obtain the high-temperature-resistant flame-retardant environment-friendly capacitor shell material.
Example 3:
the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following raw materials in parts by weight:
60 parts of epoxy resin hybrid ABS resin, 30 parts of modified mica powder, 15 parts of flame retardant modifier, 8 parts of silica micropowder, 7 parts of nano calcium carbonate and 2 parts of lignin powder;
the preparation method of the epoxy resin hybrid ABS resin comprises the steps of adding the ABS resin into a magnetic stirrer, adding nonylphenol polyoxyethylene ether, polyvinyl alcohol and absolute ethyl alcohol, stirring at a rotating speed of 250r/min for 25min, raising the temperature to 90 ℃, adding maleic anhydride and azodiisobutyronitrile, continuing stirring for 35min, adding the epoxy resin and the polyoxyethylene-polyoxypropylene copolymer, stirring at a rotating speed of 700r/min for 7.5h, and performing centrifugation and drying after stirring to obtain the epoxy resin hybrid ABS resin.
The epoxy resin in this embodiment is a glycidyl amine epoxy resin.
The modifying method of the modified mica powder of the embodiment includes that the mica powder is firstly placed in a coupling agent KH560 solution for ultrasonic dispersion for 25min, the ultrasonic power is 300W, then drying is carried out, then, cold and heat exchange treatment is carried out, and the modified mica powder is obtained after the treatment is finished.
The specific steps of the heat exchange treatment in this embodiment are to place the mica powder at-5 ℃ for 10-20min, and then at 30 ℃ for 10min, and repeat for 3 times.
The preparation method of the flame retardant modifier comprises the steps of adding an inorganic flame retardant into a magnetic stirrer, then adding deionized water, firstly stirring and dispersing for 25min at the stirring speed of 240r/min, then sequentially adding a sodium silicate solution and an aluminum sulfate solution into the magnetic stirrer, adjusting the pH value to 4.5, then continuing stirring for 2.5h, and obtaining the flame retardant modifier after stirring, filtering, washing and drying.
The inorganic flame retardant of this example was red phosphorus.
The method for preparing the high-temperature-resistant flame-retardant environment-friendly capacitor shell material comprises the following steps of:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the epoxy resin hybrid ABS resin, the modified mica powder, the flame-retardant modifier, the silicon micropowder, the nano calcium carbonate and the lignin powder in the step one into a high-speed stirrer, increasing the rotating speed to 250r/min, stirring for 25min, then sending into a double-screw extruder for extrusion, wherein the extrusion temperature is 130 ℃, and finally cooling to room temperature to obtain the high-temperature-resistant flame-retardant environment-friendly capacitor shell material.
Comparative example 1:
the materials and preparation process were substantially the same as those of example 3, except that the flame retardant modifier was not modified.
Comparative example 2:
the materials and preparation process were substantially the same as those of example 3, except that the mica powder was not modified.
Comparative example 3:
the materials and preparation process are basically the same as those of example 3, except that the raw materials and method of example 1 in chinese patent publication No. CN107325361A are used.
The results of testing the materials of examples 1-3 and comparative examples 1-3 are shown in Table 1
TABLE 1
As can be seen from Table 1, the oxygen index of example 3 of the present invention reached 99.9% at 50 ℃, the oxygen index reached 94.9% at 100 ℃, and the oxygen index of comparative example 3 reached only 31.9% at 100 ℃, so that the present invention has significant flame retardancy at high temperatures.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The high-temperature-resistant flame-retardant environment-friendly capacitor shell material is characterized by comprising the following raw materials in parts by weight:
55-65 parts of epoxy resin hybrid ABS resin, 25-35 parts of modified mica powder, 10-20 parts of flame retardant modifier, 6-10 parts of silica micropowder, 4-10 parts of nano calcium carbonate and 1-3 parts of lignin powder;
the preparation method of the epoxy resin hybrid ABS resin comprises the steps of adding the ABS resin into a magnetic stirrer, adding nonylphenol polyoxyethylene ether, polyvinyl alcohol and absolute ethyl alcohol, stirring at the rotation speed of 200-300r/min for 20-30min, raising the temperature to 85-95 ℃, adding maleic anhydride and azodiisobutyronitrile, continuing stirring for 30-40min, adding the epoxy resin and the polyoxyethylene-polyoxypropylene copolymer, stirring at the rotation speed of 500-900r/min for 5-10h, and after stirring, centrifuging and drying to obtain the epoxy resin hybrid ABS resin.
2. The high-temperature-resistant flame-retardant environment-friendly capacitor shell material as claimed in claim 1, which comprises the following raw materials in parts by weight:
57-63 parts of epoxy resin hybrid ABS resin, 26-33 parts of modified mica powder, 14-19 parts of flame retardant modifier, 7-9 parts of silica micropowder, 5-8 parts of nano calcium carbonate and 2-2.6 parts of lignin powder.
3. The high-temperature-resistant flame-retardant environment-friendly capacitor shell material as claimed in claim 2, which is characterized by comprising the following raw materials in parts by weight:
60 parts of epoxy resin hybrid ABS resin, 30 parts of modified mica powder, 15 parts of flame retardant modifier, 8 parts of silica micropowder, 7 parts of nano calcium carbonate and 2 parts of lignin powder.
4. The high temperature resistant flame retardant environment-friendly capacitor case material as claimed in claim 1, wherein the epoxy resin is glycidyl amine epoxy resin.
5. The high temperature resistant, flame retardant and environment friendly capacitor case material as claimed in claim 1, wherein the modified mica powder is modified by placing mica powder in a coupling agent KH560 solution for ultrasonic dispersion for 20-30min at an ultrasonic power of 250-350W, drying, performing heat and cold exchange treatment, and obtaining the modified mica powder after the treatment.
6. The high temperature resistant, flame retardant and environment friendly capacitor case material as claimed in claim 5, wherein the heat exchange treatment comprises placing mica powder at-5 ℃ for 10-20min, then at 30 ℃ for 15-25min, and repeating for 2-3 times.
7. The high temperature resistant, flame retardant and environment friendly capacitor case material as claimed in claim 1, wherein the flame retardant modifier is prepared by adding an inorganic flame retardant into a magnetic stirrer, adding deionized water, stirring and dispersing for 20-30min at a stirring speed of 220-260r/min, then sequentially adding a sodium silicate solution and an aluminum sulfate solution into the magnetic stirrer, adjusting the pH value to 4.0-5.0, then continuing to stir for 2-3h, and after stirring, filtering, washing and drying, the flame retardant modifier is obtained.
8. The high temperature resistant, flame retardant and environment friendly capacitor case material as claimed in claim 7, wherein the inorganic flame retardant is one or a combination of aluminum hydroxide, magnesium hydroxide, red phosphorus, ammonium polyphosphate, zinc borate and antimony oxide.
9. A method for preparing the high temperature resistant flame retardant environment-friendly capacitor shell material as defined in any one of claims 1-8, which comprises the following steps:
step one, weighing the following raw materials in parts by weight:
and step two, sequentially adding the epoxy resin hybrid ABS resin, the modified mica powder, the flame-retardant modifier, the silicon micropowder, the nano calcium carbonate and the lignin powder in the step one into a high-speed stirrer, increasing the rotating speed to 200 plus materials at 300r/min, stirring for 20-30min, then sending into a double-screw extruder for extrusion, wherein the extrusion temperature is 110 plus materials at 150 ℃, and finally cooling to room temperature to obtain the high-temperature-resistant flame-retardant environment-friendly capacitor shell material.
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Citations (2)
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| CN101182692A (en) * | 2007-12-07 | 2008-05-21 | 北京林业大学 | Preparations with removing formaldehyde and fire retardant function, paper sheet containing the same and method of producing the same |
| CN108219399A (en) * | 2018-03-01 | 2018-06-29 | 合肥峰腾节能科技有限公司 | A kind of high-performance environmentally-friendly type insulating materials and preparation method thereof |
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2019
- 2019-10-30 CN CN201911044381.2A patent/CN110894336A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182692A (en) * | 2007-12-07 | 2008-05-21 | 北京林业大学 | Preparations with removing formaldehyde and fire retardant function, paper sheet containing the same and method of producing the same |
| CN108219399A (en) * | 2018-03-01 | 2018-06-29 | 合肥峰腾节能科技有限公司 | A kind of high-performance environmentally-friendly type insulating materials and preparation method thereof |
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| Title |
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| 欧育湘主编: "阻燃ABS", 《国防工业出版社》 * |
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Application publication date: 20200320 |