CN116239837A - High-heat-conductivity flame-retardant PP material and preparation method thereof - Google Patents
High-heat-conductivity flame-retardant PP material and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 55
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000003063 flame retardant Substances 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000004743 Polypropylene Substances 0.000 claims abstract description 63
- 239000000945 filler Substances 0.000 claims abstract description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims abstract description 29
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 27
- 239000010439 graphite Substances 0.000 claims abstract description 27
- 239000000347 magnesium hydroxide Substances 0.000 claims abstract description 24
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims abstract description 24
- -1 polypropylene Polymers 0.000 claims abstract description 22
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 21
- 239000000314 lubricant Substances 0.000 claims abstract description 20
- 229920001155 polypropylene Polymers 0.000 claims abstract description 19
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 14
- 239000003381 stabilizer Substances 0.000 claims abstract description 12
- 239000007822 coupling agent Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 18
- 239000000155 melt Substances 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000008187 granular material Substances 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- NYEZZYQZRQDLEH-UHFFFAOYSA-N 2-ethyl-4,5-dihydro-1,3-oxazole Chemical compound CCC1=NCCO1 NYEZZYQZRQDLEH-UHFFFAOYSA-N 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000004611 light stabiliser Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000008117 stearic acid Substances 0.000 claims description 3
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 5
- 239000011256 inorganic filler Substances 0.000 abstract description 4
- 229910003475 inorganic filler Inorganic materials 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
-
- 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
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
-
- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a high-heat-conductivity flame-retardant PP material and a preparation method thereof in the field of high-polymer material modification, wherein the high-heat-conductivity flame-retardant PP material comprises the following components in parts by weight: 70-80 parts of polypropylene, 20-30 parts of modified heat conducting filler, 0.2-0.4 part of antioxidant, 0.2-0.4 part of stabilizer and 0.4-0.8 part of lubricant. The high-heat-conductivity flame-retardant PP material disclosed by the invention has the advantages that the magnesium hydroxide and the graphite are used as the heat-conducting filler, the price of the magnesium hydroxide and the graphite is low, the sources of the magnesium hydroxide and the graphite are wide, and the heat conductivity and the flame retardance of the PP material are greatly improved due to the high heat conductivity coefficient and the flame retardance of the magnesium hydroxide and the graphite; according to the invention, the surface treatment is carried out on the filler to improve the interface bonding condition of the filler and the matrix, the surface treatment of the heat-conducting filler effectively reduces phonon scattering between the filler and the matrix, reduces surface thermal resistance, improves the coefficient of heat conductivity of the system, modifies the filler and the mixed coupling agent, solves the problem of poor compatibility of the inorganic filler and PP, and improves the coefficient of heat conductivity.
Description
Technical Field
The invention belongs to the field of high polymer material modification, and particularly relates to a high-heat-conductivity flame-retardant PP material and a preparation method thereof.
Background
Since the industrialization of polypropylene in 1957, polypropylene has become the fastest growing plastic variety in general thermoplastic plastics, and has increasingly wide application fields, and has become an indispensable material for national economy development. Polypropylene has excellent physical and mechanical properties and processability, which are also the cause of rapid development, but polypropylene has some disadvantages such as poor aging resistance, low toughness, poor transparency, flammability, large shrinkage, warpage of products, etc., which limit the application of PP in industries such as home appliances, etc.
Chinese patent CN106928546a discloses a high-gloss flame-retardant heat-conductive polypropylene material, and preparation method and application thereof, the raw materials thereof comprise the following components in parts by weight: 41-65.6 parts of polypropylene resin, 10-20 parts of brominated flame retardant, 3-8 parts of flame retardant synergist, 5-15 parts of aluminum oxide, 10-25 parts of boron nitride, 0.4-1 part of antioxidant and 0.5-1 part of lubricant;
chinese patent CN109593274a discloses a PP reinforcement material with high heat conductivity, which is prepared from the following raw materials in percentage by mass: 62-82% of polypropylene; 7.3-10% of flame retardant; 3-5% of softening agent; 3-8% of anti-dripping agent; 0.1-0.5% of lubricant; 0.1 to 0.5 percent of antioxidant; 0.1 to 0.5 percent of plasticizer; 2.5 to 5.5 percent of compatilizer; 1-5% of stainless steel fiber bundles and carbon fibers; 0.9-3% of silicon carbide micropowder.
The improved material in the patent uses flame retardant synergist and brominated flame retardant to conduct flame retardance, aluminum oxide, boron nitride or stainless steel fiber bundle carbon fiber and silicon carbide micro powder to conduct heat, the use cost is high, the compatibility problem is not considered, the polarity of inorganic filler particles is poor in interfacial compatibility with a resin matrix, the filler is easy to agglomerate in the resin, and a good dispersing effect cannot be achieved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the high-heat-conductivity flame-retardant PP material and the preparation method thereof, and the magnesium hydroxide and the graphite are treated simultaneously by using the mixed coupling agent, so that the modified inorganic filler and the PP can be well and uniformly mixed, anisotropic distribution is realized, and the purposes of improving heat conduction and flame retardance are realized.
The aim of the invention can be achieved by the following technical scheme:
the high-heat-conductivity flame-retardant PP material comprises the following components in parts by weight:
wherein the modified heat conducting filler is formed by compounding magnesium hydroxide and graphite.
Preferably, the polypropylene has a melt index of 5-25g/10min at 230℃under 2.16 Kg.
Preferably, the mass ratio of magnesium hydroxide to graphite in the modified heat-conducting filler is 2:1.
preferably, the antioxidant is one or two of hindered phenol antioxidants and phosphite antioxidants.
Preferably, the lubricant is at least one of a stearic acid-based lubricant and a silicone-based lubricant.
Preferably, the stabilizer is a benzotriazole-based light stabilizer.
Preferably, the preparation method of the modified heat-conducting filler comprises the following steps:
firstly, preparing magnesium alkoxide and ethanol into sol, and mixing the sol with graphite at 500 ℃ for 2 hours to coat a magnesium oxide film on the surface of the graphite;
drying magnesium hydroxide at 90 ℃ for 2 hours, crushing the dried magnesium hydroxide to 3-5cm granules, putting the granules into ultrafine grinding equipment, adding tert-butyl peroxybenzoate and polyethylenic alcohol, controlling the reaction at 70-130 ℃ and grinding for 30 minutes to obtain modified magnesium hydroxide powder;
finally, the obtained modified magnesium hydroxide powder, graphite coated with a magnesium oxide film on the surface and a mixed coupling agent are mixed according to the following weight ratio of 20:10:5, mixing at a high speed for 1h, heating to 90 ℃, preserving heat, reacting for 2h, adding a 2-ethyl-2-oxazoline solvent after the reaction, mixing at a high speed for 100 ℃ according to a ratio of 10:1, reacting for 1h, and drying to obtain the modified heat-conducting filler.
Preferably, the specific surface area of the magnesium hydroxide is less than 20m2/g, and the purity is more than 93%.
Preferably, the graphite has a fixed carbon content of greater than 95%, d50=17±2m.
A preparation method of a high-heat-conductivity flame-retardant PP material comprises the following steps:
firstly, uniformly mixing polypropylene, modified heat-conducting filler, antioxidant, stabilizer and lubricant in a high-speed mixer for 30min;
then adding the uniformly mixed materials into a main feeding port of a double-screw extruder, and extruding and granulating to obtain the high-heat-conductivity flame-retardant PP material;
wherein the temperature of the charging barrel of the extruder is 180-190 ℃ and the temperature of the melt is 190 ℃.
The invention has the beneficial effects that:
1. the high-heat-conductivity flame-retardant PP material disclosed by the invention has the advantages that the magnesium hydroxide and the graphite are used as the heat-conducting filler, the price of the magnesium hydroxide and the graphite is low, the sources of the magnesium hydroxide and the graphite are wide, and the heat conductivity and the flame retardance of the PP material are greatly improved due to the high heat conductivity coefficient and the flame retardance of the magnesium hydroxide and the graphite;
2. according to the invention, the surface treatment is carried out on the filler to improve the interface bonding condition of the filler and the matrix, the surface treatment of the heat-conducting filler effectively reduces phonon scattering between the filler and the matrix, reduces surface thermal resistance, improves the coefficient of heat conductivity of the system, modifies the filler and the mixed coupling agent, solves the problem of poor compatibility of the inorganic filler and PP, and improves the coefficient of heat conductivity.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a high-heat-conductivity flame-retardant PP material and a preparation method thereof, wherein the high-heat-conductivity flame-retardant PP material is prepared by mixing, extruding and granulating polypropylene, modified heat-conducting filler, antioxidant, stabilizer and lubricant, and the melt index of the polypropylene under the condition of 2.16Kg at 230 ℃ is 5-25g/10min; the modified heat-conducting filler comprises magnesium hydroxide and graphite, wherein the mass ratio of the magnesium hydroxide to the graphite is 2:1, a step of; the antioxidant is one or two of hindered phenol antioxidants and phosphite antioxidants; the stabilizer is benzotriazole light stabilizer; the lubricant is at least one of stearic acid lubricant and silicone lubricant.
The preparation method of the modified heat-conducting filler comprises the following steps:
step one: preparing 0.1mol/L sol from magnesium alkoxide and ethanol, mixing with graphite, and treating at 500 deg.C for 2 hr to coat magnesium oxide film on the surface of graphite;
step two: drying magnesium hydroxide at 90 ℃ for 2 hours, crushing to 3-5cm granules, putting into ultrafine grinding equipment, adding a certain amount of tert-butyl peroxybenzoate and polyethylenic alcohol, controlling the reaction at 70-130 ℃ and grinding for 30 minutes to obtain modified magnesium hydroxide powder;
step three: pretreated magnesium hydroxide and graphite were combined with a hybrid coupling agent (silane coupling agent: titanate coupling agent=2:1) according to 20:10:5 mixing in proportion, heating to 90 ℃ after high-speed mixing for 1h, preserving heat and reacting for 2h, adding 2-ethyl-2 oxazoline solvent after the reaction is finished, mixing at high speed according to the proportion of 10:1, reacting for 1h at 100 ℃, and drying to obtain modified heat-conducting filler;
wherein, the specific surface area of the magnesium hydroxide is less than 20m2/g, and the purity is more than 93 percent; the graphite has a fixed carbon content of 95% or more, d50=17±2m.
Example 1:
the high-heat-conductivity flame-retardant PP material comprises the following components in parts by weight:
a preparation method of a high-heat-conductivity flame-retardant PP material comprises the following steps:
step one: uniformly mixing polypropylene, modified heat-conducting filler, antioxidant, stabilizer and lubricant in a high-speed mixer for 30min according to the proportion;
step two: and (3) adding the uniformly mixed materials in the step one into a main feeding port of a double-screw extruder, extruding and granulating to obtain the high-heat-conductivity flame-retardant PP material, wherein the temperature of a charging barrel of the extruder is 190 ℃, and the temperature of a melt is 190 ℃.
Example 2
The high-heat-conductivity flame-retardant PP material comprises the following components in parts by weight:
a preparation method of a high-heat-conductivity flame-retardant PP material comprises the following steps:
step one: uniformly mixing polypropylene, modified heat-conducting filler, antioxidant, stabilizer and lubricant in a high-speed mixer for 30min according to the proportion;
step two: and (3) adding the uniformly mixed materials in the step one into a main feeding port of a double-screw extruder, extruding and granulating to obtain the high-heat-conductivity flame-retardant PP material, wherein the temperature of a charging barrel of the extruder is 190 ℃, and the temperature of a melt is 190 ℃.
Example 3
The high-heat-conductivity flame-retardant PP material comprises the following components in parts by weight:
a preparation method of a high-heat-conductivity flame-retardant PP material comprises the following steps:
step one: uniformly mixing polypropylene, modified heat-conducting filler, antioxidant, stabilizer and lubricant in a high-speed mixer for 30min according to the proportion;
step two: and (3) adding the uniformly mixed materials in the step one into a main feeding port of a double-screw extruder, extruding and granulating to obtain the high-heat-conductivity flame-retardant PP material with low temperature, wherein the temperature of a charging barrel of the extruder is 190 ℃, and the temperature of a melt is 190 ℃.
Comparative example 1
The raw materials comprise the following components in parts by weight:
the preparation method comprises the following steps:
step one: uniformly mixing polypropylene, unmodified heat-conducting filler, antioxidant, stabilizer and lubricant in a high-speed mixer for 30min according to the proportion;
step two: and (3) adding the uniformly mixed materials in the step one into a main feeding port of a double-screw extruder, extruding and granulating to obtain the high-heat-conductivity flame-retardant PP material, wherein the temperature of a charging barrel of the extruder is 190 ℃, and the temperature of a melt is 190 ℃.
Comparative example 2
The raw materials comprise the following components in parts by weight:
the preparation method comprises the following steps:
step one: uniformly mixing polypropylene, an antioxidant, a stabilizer and a lubricant in a high-speed mixer for 30min according to the proportion;
step two: and (3) adding the uniformly mixed materials in the step one into a main feeding port of a double-screw extruder, extruding and granulating to obtain the high-heat-conductivity flame-retardant PP material, wherein the temperature of a charging barrel of the extruder is 190 ℃, and the temperature of a melt is 190 ℃.
The materials obtained in examples and comparative examples were subjected to performance tests, and the test results are shown in Table 1.
TABLE 1 results of Performance test of materials obtained in examples and comparative examples
As can be seen from the table, the heat conduction filler added with the modified PP material obviously improves the heat conduction and flame retardance of the PP material, does not obviously influence the physical properties of the PP material, and has strong applicability.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (10)
1. The high-heat-conductivity flame-retardant PP material is characterized by comprising the following components in parts by weight:
wherein the modified heat conducting filler is formed by compounding magnesium hydroxide and graphite.
2. The high thermal conductivity flame retardant PP material of claim 1 wherein said at least one of random or block polypropylene has a melt index of 5-25g/10min at 230 ℃,2.16 Kg.
3. The high-heat-conductivity flame-retardant PP material according to claim 1, wherein the mass ratio of magnesium hydroxide to graphite in the modified heat-conducting filler is 2:1.
4. the high thermal conductivity flame retardant PP material according to claim 1, wherein the antioxidant is one or a combination of two antioxidants selected from hindered phenol antioxidants and phosphite antioxidants.
5. The high thermal conductivity flame retardant PP material of claim 1 wherein said lubricant is at least one of a stearic acid based lubricant and a silicone based lubricant.
6. The high thermal conductivity flame retardant PP material of claim 1 wherein said stabilizer is a benzotriazole type light stabilizer.
7. The high-heat-conductivity flame-retardant PP material according to claim 1, wherein the preparation method of the modified heat-conducting filler comprises the following steps:
firstly, preparing 0.1mol/L sol from magnesium alkoxide and ethanol, and mixing with graphite at 500 ℃ for 2 hours to coat a magnesium oxide film on the surface of the graphite;
drying magnesium hydroxide at 90-120 ℃ for 2 hours, crushing the dried magnesium hydroxide to 3-5cm granules, putting the granules into superfine grinding equipment, adding tert-butyl peroxybenzoate and polyethylenic alcohol, controlling the reaction at 70-130 ℃ and grinding for 30min to obtain modified magnesium hydroxide powder;
finally, the obtained modified magnesium hydroxide powder, graphite coated with a magnesium oxide film on the surface and a mixed coupling agent are mixed according to the following weight ratio of 4:2:1, carrying out high-speed mixing for 1h, then carrying out heat preservation reaction for 2-3h at 90-120 ℃, adding a 2-ethyl-2-oxazoline solvent after the reaction is finished, carrying out high-speed mixing for 100-120 ℃ according to the ratio of 10:1, carrying out reaction for 1-2h, and drying to obtain the modified heat-conducting filler.
8. The high-heat-conductivity flame-retardant PP material according to claim 7, wherein the specific surface area of magnesium hydroxide is less than 20m2/g, and the purity is more than 93%.
9. The high thermal conductivity flame retardant PP material of claim 7 wherein said graphite has a fixed carbon content of greater than 95%, d50=17±2m.
10. The preparation method of the high-heat-conductivity flame-retardant PP material is characterized by comprising the following steps of:
firstly, uniformly mixing polypropylene, modified heat-conducting filler, antioxidant, stabilizer and lubricant in a high-speed mixer for 30min;
then adding the uniformly mixed materials into a main feeding port of a double-screw extruder, and extruding and granulating to obtain the high-heat-conductivity flame-retardant PP material;
wherein the temperature of the charging barrel of the extruder is 180-190 ℃ and the temperature of the melt is 190 ℃.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260413A (en) * | 2010-05-28 | 2011-11-30 | 合复新材料科技(无锡)有限公司 | Composite material component with high flame retardation performance and high heat conduction performance, and its manufacture method |
| JP2014133779A (en) * | 2013-01-08 | 2014-07-24 | Kenner Material & System Co Ltd | Fire retardant thermally conductive resin composition |
| CN108102142A (en) * | 2017-12-08 | 2018-06-01 | 中国科学院化学研究所 | The expansible graphite fire retardant and preparation method of a kind of surface encapsulated nanoparticles |
| CN109251419A (en) * | 2018-07-27 | 2019-01-22 | 重庆会通科技有限公司 | A kind of high thermal conductivity coefficient polypropylene modified material and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260413A (en) * | 2010-05-28 | 2011-11-30 | 合复新材料科技(无锡)有限公司 | Composite material component with high flame retardation performance and high heat conduction performance, and its manufacture method |
| JP2014133779A (en) * | 2013-01-08 | 2014-07-24 | Kenner Material & System Co Ltd | Fire retardant thermally conductive resin composition |
| CN108102142A (en) * | 2017-12-08 | 2018-06-01 | 中国科学院化学研究所 | The expansible graphite fire retardant and preparation method of a kind of surface encapsulated nanoparticles |
| CN109251419A (en) * | 2018-07-27 | 2019-01-22 | 重庆会通科技有限公司 | A kind of high thermal conductivity coefficient polypropylene modified material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 盖广清等: "可膨胀石墨-氢氧化镁-秸秆纤维-聚氨酯硬泡复合保温材料的制备及性能研究", 科技视界, no. 05, pages 18 - 19 * |
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