CN112300660A - Polymer electrostatic powder capable of improving flame retardant property of plate - Google Patents
Polymer electrostatic powder capable of improving flame retardant property of plate Download PDFInfo
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- CN112300660A CN112300660A CN202011135312.5A CN202011135312A CN112300660A CN 112300660 A CN112300660 A CN 112300660A CN 202011135312 A CN202011135312 A CN 202011135312A CN 112300660 A CN112300660 A CN 112300660A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
- C09D5/033—Powdery paints characterised by the additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides polymer electrostatic powder capable of improving the flame retardant property of a plate, and relates to the technical field of electrostatic spraying powder. The polymer electrostatic powder capable of improving the flame retardant property of the plate comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 4-6 parts of thermal curing agent, 2-4 parts of dicyclopentadiene dioxide, 1-3 parts of biuret type polyisocyanate, 2-3 parts of methyl isobutyl ketone, 4-5 parts of titanium dioxide, 3-5 parts of vermiculite powder, 2-4 parts of polyvinyl butyral, 4-6 parts of sodium hexametaphosphate, 3-5 parts of titanium dioxide, 2-4 parts of alumina, 4-5 parts of silane coupling agent and 1-2 parts of dispersing agent. According to the invention, on the basis of the traditional electrostatic powder raw material, the preparation raw material of the electrostatic powder is reasonably optimized, the raw material obtaining mode is simple, the cost is lower, the coating formed after electrostatic spraying is light, thin and uniform, the glossiness is good, meanwhile, the coating has good adhesive force, high hardness, good corrosion resistance and good flame retardant property, the use safety of the plate is improved, and the service life of the plate is prolonged.
Description
Technical Field
The invention relates to the technical field of electrostatic spraying powder, in particular to high polymer electrostatic powder capable of improving the flame retardant property of a plate.
Background
The powder coating is sprayed on the surface of a material to be processed by means of static electricity, the powder particle layers which are not adhered to each other form a firm coating after being heated and melted and are tightly combined with the surface of the material, and the coating has excellent anti-corrosion performance and decoration function.
The artificial board is a board or a molded product which is made by taking wood or other non-wood plants as raw materials, separating the raw materials into various unit materials through certain mechanical processing and then gluing the unit materials with or without adhesive and other additives. Mainly include plywood, shaving board and fibreboard etc. three major types of products, need carry out electrostatic spraying to the panel surface in panel course of working and handle, improve the performance on panel surface, however, among the prior art, because the raw materials of electrostatic powder preparation are comparatively simple, the coating performance that forms on panel surface after the spraying is single, can't satisfy current demand yet.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects in the prior art, the invention provides the polymer electrostatic powder capable of improving the flame retardant property of the plate, and overcomes the defects in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the polymer electrostatic powder capable of improving the flame retardant property of the plate comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 4-6 parts of thermal curing agent, 2-4 parts of dicyclopentadiene dioxide, 1-3 parts of biuret type polyisocyanate, 2-3 parts of methyl isobutyl ketone, 4-5 parts of titanium dioxide, 3-5 parts of vermiculite powder, 2-4 parts of polyvinyl butyral, 4-6 parts of sodium hexametaphosphate, 3-5 parts of titanium dioxide, 2-4 parts of alumina, 4-5 parts of silane coupling agent and 1-2 parts of dispersing agent.
Preferably, the dispersing agent is one or more of sodium pyrophosphate, sodium polyacrylate and polyvinyl alcohol.
Preferably, the electrostatic powder comprises the following raw materials in parts by weight: 40 parts of epoxy resin, 4 parts of thermal curing agent, 2 parts of dicyclopentadiene dioxide, 1 part of biuret type polyisocyanate, 2 parts of methyl isobutyl ketone, 4 parts of titanium dioxide, 3 parts of vermiculite powder, 2 parts of polyvinyl butyral, 4 parts of sodium hexametaphosphate, 3 parts of titanium dioxide, 2 parts of alumina, 4 parts of silane coupling agent and 1 part of dispersing agent.
Preferably, the electrostatic powder comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 5 parts of thermal curing agent, 3 parts of dicyclopentadiene dioxide, 2 parts of biuret type polyisocyanate, 2.5 parts of methyl isobutyl ketone, 4.5 parts of titanium dioxide, 4 parts of vermiculite powder, 3 parts of polyvinyl butyral, 5 parts of sodium hexametaphosphate, 4 parts of titanium dioxide, 3 parts of alumina, 4.5 parts of silane coupling agent and 1.5 parts of dispersing agent.
Preferably, the electrostatic powder comprises the following raw materials in parts by weight: 50 parts of epoxy resin, 6 parts of thermal curing agent, 4 parts of dicyclopentadiene dioxide, 3 parts of biuret type polyisocyanate, 3 parts of methyl isobutyl ketone, 5 parts of titanium dioxide, 5 parts of vermiculite powder, 4 parts of polyvinyl butyral, 6 parts of sodium hexametaphosphate, 5 parts of titanium dioxide, 4 parts of alumina, 5 parts of silane coupling agent and 2 parts of dispersing agent.
Preferably, the preparation method of the electrostatic powder comprises the following steps:
s1, weighing titanium dioxide, vermiculite powder, titanium dioxide and alumina according to parts by weight, mixing the titanium dioxide, the vermiculite powder, the titanium dioxide and the alumina, feeding the mixture into grinding equipment, and grinding the materials into fine powder;
s2, weighing the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral according to the parts by weight, sending the mixture into a stirring kettle for primary stirring, adding the material ground in the step 1 after stirring, and stirring for the second time;
s3, after the secondary stirring is finished, adding sodium hexametaphosphate, a silane coupling agent and a dispersing agent into the reaction kettle, and stirring for three times;
and S4, feeding the mixed materials into a double-screw extruder for extrusion, briquetting the extruded materials, drying the blocks, and crushing to obtain powdery materials, namely the electrostatic powder.
Preferably, the time of the primary stirring is 10-15min, and the stirring speed is 600-800 r/min.
Preferably, the time of the secondary stirring is 15-30min, and the stirring speed is 600-1000 r/min.
Preferably, the time of the three times of stirring is 30-60min, and the stirring speed is 800-1000 r/min.
Preferably, the inlet temperature of the double-screw extruder is 120-140 ℃, the middle section temperature is 100-120 ℃, and the outlet temperature is 80-100 ℃.
(III) advantageous effects
The invention provides polymer electrostatic powder capable of improving the flame retardant property of a plate. The method has the following beneficial effects:
according to the invention, on the basis of the traditional electrostatic powder raw material, the preparation raw material of the electrostatic powder is reasonably optimized, the raw material obtaining mode is simple, the cost is lower, the coating formed after electrostatic spraying is light, thin and uniform, the glossiness is good, meanwhile, the coating has good adhesive force, high hardness, good corrosion resistance and good flame retardant property, the use safety of the plate is improved, and the service life of the plate is prolonged.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, 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.
The first embodiment is as follows:
the embodiment of the invention provides high polymer electrostatic powder capable of improving the flame retardant property of a plate, which comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 4-6 parts of a thermal curing agent, 2-4 parts of dicyclopentadiene dioxide, 1-3 parts of biuret type polyisocyanate, 2-3 parts of methyl isobutyl ketone, 4-5 parts of titanium dioxide, 3-5 parts of vermiculite powder, 2-4 parts of polyvinyl butyral, 4-6 parts of sodium hexametaphosphate, 3-5 parts of titanium dioxide, 2-4 parts of alumina, 4-5 parts of a silane coupling agent and 1-2 parts of a dispersing agent, wherein the dispersing agent is one or more of sodium pyrophosphate, sodium polyacrylate and polyvinyl alcohol.
The preparation method of the electrostatic powder comprises the following steps:
s1, weighing titanium dioxide, vermiculite powder, titanium dioxide and alumina according to parts by weight, mixing the titanium dioxide, the vermiculite powder, the titanium dioxide and the alumina, feeding the mixture into grinding equipment, and grinding the materials into fine powder;
s2, weighing the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral according to the weight parts, sending the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral into a stirring kettle for primary stirring, wherein the stirring time is 10-15min, the stirring speed is 800r/min, adding the material ground in the step 1 after stirring, and carrying out secondary stirring, wherein the stirring time is 15-30min, and the stirring speed is 600 + 1000 r/min;
s3, after the secondary stirring, adding sodium hexametaphosphate, a silane coupling agent and a dispersing agent into the reaction kettle, and stirring for three times, wherein the stirring time is 30-60min, and the stirring speed is 800-;
s4, feeding the mixed materials into a double-screw extruder for extrusion, wherein the inlet temperature of the double-screw extruder is 140 ℃ plus 120 ℃, the middle section temperature of the double-screw extruder is 120 ℃ plus 100 ℃, the outlet temperature of the double-screw extruder is 80-100 ℃, briquetting is carried out after the materials are extruded, the block is dried, and then crushing is carried out, so that the powdery materials, namely the electrostatic powder, are obtained.
Example two:
the embodiment of the invention provides high polymer electrostatic powder capable of improving the flame retardant property of a plate, which comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 4-6 parts of a thermal curing agent, 2-4 parts of dicyclopentadiene dioxide, 1-3 parts of biuret type polyisocyanate, 2-3 parts of methyl isobutyl ketone, 4-5 parts of titanium dioxide, 3-5 parts of vermiculite powder, 2-4 parts of polyvinyl butyral, 4-6 parts of sodium hexametaphosphate, 3-5 parts of titanium dioxide, 2-4 parts of alumina, 4-5 parts of a silane coupling agent and 1-2 parts of a dispersing agent, wherein the dispersing agent is one or more of sodium pyrophosphate, sodium polyacrylate and polyvinyl alcohol.
The preparation method of the electrostatic powder comprises the following steps:
s1, weighing titanium dioxide, vermiculite powder, titanium dioxide and alumina according to parts by weight, mixing the titanium dioxide, the vermiculite powder, the titanium dioxide and the alumina, feeding the mixture into grinding equipment, and grinding the materials into fine powder;
s2, weighing the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral according to the weight parts, sending the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral into a stirring kettle for primary stirring, wherein the stirring time is 10-15min, the stirring speed is 800r/min, adding the material ground in the step 1 after stirring, and carrying out secondary stirring, wherein the stirring time is 15-30min, and the stirring speed is 600 + 1000 r/min;
s3, after the secondary stirring, adding sodium hexametaphosphate, a silane coupling agent and a dispersing agent into the reaction kettle, and stirring for three times, wherein the stirring time is 30-60min, and the stirring speed is 800-;
s4, feeding the mixed materials into a double-screw extruder for extrusion, wherein the inlet temperature of the double-screw extruder is 140 ℃ plus 120 ℃, the middle section temperature of the double-screw extruder is 120 ℃ plus 100 ℃, the outlet temperature of the double-screw extruder is 80-100 ℃, briquetting is carried out after the materials are extruded, the block is dried, and then crushing is carried out, so that the powdery materials, namely the electrostatic powder, are obtained.
Example three:
the embodiment of the invention provides high polymer electrostatic powder capable of improving the flame retardant property of a plate, which comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 4-6 parts of a thermal curing agent, 2-4 parts of dicyclopentadiene dioxide, 1-3 parts of biuret type polyisocyanate, 2-3 parts of methyl isobutyl ketone, 4-5 parts of titanium dioxide, 3-5 parts of vermiculite powder, 2-4 parts of polyvinyl butyral, 4-6 parts of sodium hexametaphosphate, 3-5 parts of titanium dioxide, 2-4 parts of alumina, 4-5 parts of a silane coupling agent and 1-2 parts of a dispersing agent, wherein the dispersing agent is one or more of sodium pyrophosphate, sodium polyacrylate and polyvinyl alcohol.
The preparation method of the electrostatic powder comprises the following steps:
s1, weighing titanium dioxide, vermiculite powder, titanium dioxide and alumina according to parts by weight, mixing the titanium dioxide, the vermiculite powder, the titanium dioxide and the alumina, feeding the mixture into grinding equipment, and grinding the materials into fine powder;
s2, weighing the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral according to the weight parts, sending the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral into a stirring kettle for primary stirring, wherein the stirring time is 10-15min, the stirring speed is 800r/min, adding the material ground in the step 1 after stirring, and carrying out secondary stirring, wherein the stirring time is 15-30min, and the stirring speed is 600 + 1000 r/min;
s3, after the secondary stirring, adding sodium hexametaphosphate, a silane coupling agent and a dispersing agent into the reaction kettle, and stirring for three times, wherein the stirring time is 30-60min, and the stirring speed is 800-;
s4, feeding the mixed materials into a double-screw extruder for extrusion, wherein the inlet temperature of the double-screw extruder is 140 ℃ plus 120 ℃, the middle section temperature of the double-screw extruder is 120 ℃ plus 100 ℃, the outlet temperature of the double-screw extruder is 80-100 ℃, briquetting is carried out after the materials are extruded, the block is dried, and then crushing is carried out, so that the powdery materials, namely the electrostatic powder, are obtained.
According to the invention, on the basis of the traditional electrostatic powder raw material, the preparation raw material of the electrostatic powder is reasonably optimized, the raw material obtaining mode is simple, the cost is lower, the coating formed after electrostatic spraying is light, thin and uniform, the glossiness is good, meanwhile, the coating has good adhesive force, high hardness, good corrosion resistance and good flame retardant property, the use safety of the plate is improved, and the service life of the plate is prolonged.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A polymer electrostatic powder capable of improving flame retardant property of a plate is characterized in that: the electrostatic powder comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 4-6 parts of thermal curing agent, 2-4 parts of dicyclopentadiene dioxide, 1-3 parts of biuret type polyisocyanate, 2-3 parts of methyl isobutyl ketone, 4-5 parts of titanium dioxide, 3-5 parts of vermiculite powder, 2-4 parts of polyvinyl butyral, 4-6 parts of sodium hexametaphosphate, 3-5 parts of titanium dioxide, 2-4 parts of alumina, 4-5 parts of silane coupling agent and 1-2 parts of dispersing agent.
2. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the dispersing agent is one or more of sodium pyrophosphate, sodium polyacrylate and polyvinyl alcohol.
3. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the electrostatic powder comprises the following raw materials in parts by weight: 40 parts of epoxy resin, 4 parts of thermal curing agent, 2 parts of dicyclopentadiene dioxide, 1 part of biuret type polyisocyanate, 2 parts of methyl isobutyl ketone, 4 parts of titanium dioxide, 3 parts of vermiculite powder, 2 parts of polyvinyl butyral, 4 parts of sodium hexametaphosphate, 3 parts of titanium dioxide, 2 parts of alumina, 4 parts of silane coupling agent and 1 part of dispersing agent.
4. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the electrostatic powder comprises the following raw materials in parts by weight: 45 parts of epoxy resin, 5 parts of thermal curing agent, 3 parts of dicyclopentadiene dioxide, 2 parts of biuret type polyisocyanate, 2.5 parts of methyl isobutyl ketone, 4.5 parts of titanium dioxide, 4 parts of vermiculite powder, 3 parts of polyvinyl butyral, 5 parts of sodium hexametaphosphate, 4 parts of titanium dioxide, 3 parts of alumina, 4.5 parts of silane coupling agent and 1.5 parts of dispersing agent.
5. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the electrostatic powder comprises the following raw materials in parts by weight: 50 parts of epoxy resin, 6 parts of thermal curing agent, 4 parts of dicyclopentadiene dioxide, 3 parts of biuret type polyisocyanate, 3 parts of methyl isobutyl ketone, 5 parts of titanium dioxide, 5 parts of vermiculite powder, 4 parts of polyvinyl butyral, 6 parts of sodium hexametaphosphate, 5 parts of titanium dioxide, 4 parts of alumina, 5 parts of silane coupling agent and 2 parts of dispersing agent.
6. The electrostatic polymer powder for improving the flame retardant property of a plate according to any one of claims 1 to 5, wherein: the preparation method of the electrostatic powder comprises the following steps:
s1, weighing titanium dioxide, vermiculite powder, titanium dioxide and alumina according to parts by weight, mixing the titanium dioxide, the vermiculite powder, the titanium dioxide and the alumina, feeding the mixture into grinding equipment, and grinding the materials into fine powder;
s2, weighing the epoxy resin, the thermal curing agent, the dicyclopentadiene dioxide, the biuret type polyisocyanate, the methyl isobutyl ketone and the polyvinyl butyral according to the parts by weight, sending the mixture into a stirring kettle for primary stirring, adding the material ground in the step 1 after stirring, and stirring for the second time;
s3, after the secondary stirring is finished, adding sodium hexametaphosphate, a silane coupling agent and a dispersing agent into the reaction kettle, and stirring for three times;
and S4, feeding the mixed materials into a double-screw extruder for extrusion, briquetting the extruded materials, drying the blocks, and crushing to obtain powdery materials, namely the electrostatic powder.
7. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the time of the primary stirring is 10-15min, and the stirring speed is 600-800 r/min.
8. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the time of the secondary stirring is 15-30min, and the stirring speed is 600-1000 r/min.
9. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the time of the three times of stirring is 30-60min, and the stirring speed is 800-.
10. The electrostatic polymer powder for improving the flame retardant property of the plate as claimed in claim 1, wherein: the inlet temperature of the double-screw extruder is 120-140 ℃, the middle section temperature is 100-120 ℃, and the outlet temperature is 80-100 ℃.
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| CN202011135312.5A CN112300660A (en) | 2020-10-22 | 2020-10-22 | Polymer electrostatic powder capable of improving flame retardant property of plate |
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| 方志刚等: "《舰船防腐防漏工程》", 31 December 2017, 国防工业出版社 * |
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