CN114015164A - Flame-retardant polypropylene material and preparation method thereof - Google Patents
Flame-retardant polypropylene material and preparation method thereof Download PDFInfo
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- CN114015164A CN114015164A CN202111413761.6A CN202111413761A CN114015164A CN 114015164 A CN114015164 A CN 114015164A CN 202111413761 A CN202111413761 A CN 202111413761A CN 114015164 A CN114015164 A CN 114015164A
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 81
- 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 79
- 239000004743 Polypropylene Substances 0.000 title claims abstract description 64
- 229920001155 polypropylene Polymers 0.000 title claims abstract description 63
- -1 polypropylene Polymers 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 62
- 239000003365 glass fiber Substances 0.000 claims abstract description 55
- 239000011347 resin Substances 0.000 claims abstract description 12
- 229920005989 resin Polymers 0.000 claims abstract description 12
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 11
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 11
- 239000000314 lubricant Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 3
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical group O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 9
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 6
- 239000000347 magnesium hydroxide Substances 0.000 claims description 6
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 5
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 2
- 235000013539 calcium stearate Nutrition 0.000 claims description 2
- 239000008116 calcium stearate Substances 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 229920001519 homopolymer Polymers 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- BZQKBFHEWDPQHD-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br BZQKBFHEWDPQHD-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000005543 nano-size silicon particle Substances 0.000 description 3
- 229920005606 polypropylene copolymer Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- WQJOSEVSASFCPR-UHFFFAOYSA-N (1-bromo-1-phenylethyl)benzene Chemical compound C=1C=CC=CC=1C(Br)(C)C1=CC=CC=C1 WQJOSEVSASFCPR-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 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
- C08L23/14—Copolymers of propene
-
- 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
- C08K3/18—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
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a flame-retardant polypropylene material and a preparation method thereof, wherein the flame-retardant polypropylene material comprises 20-40 wt% of long glass fiber master batch and 60-80 wt% of flame-retardant master batch, the long glass fiber master batch is a long glass fiber reinforced polypropylene material, the content of long glass fibers in the long glass fiber master batch is 55-65 wt%, and the flame-retardant master batch comprises the following raw materials in parts by weight: 25-35 parts of polypropylene resin, 30-35 parts of hydroxide, 19-25 parts of brominated flame retardant, 5-8 parts of flame retardant synergist, 9-11 parts of nano filler, 0.4-0.6 part of antioxidant and 0.8-1.0 part of lubricant. The flame-retardant polypropylene material prepared by the invention can resist flame burning without perforation or collapse, and can be used for electrical control box workpieces with high flame-retardant requirements.
Description
Technical Field
The invention relates to the field of high polymer materials, in particular to a flame-retardant polypropylene material and a preparation method thereof.
Background
Polypropylene (PP) is one of five general resins, has excellent comprehensive performance, high cost performance, wide processing and forming conditions, wide application range and high yield, and is widely applied to the fields of automobile industry, electronic and electric appliances, packaging, building materials, cables and the like. PP has simple molecular structure, no oxygen/nitrogen/sulfur and other heteroatoms, oxygen index of 17.5, high combustion speed, high heat generating amount and easy fusion and dripping. For the occasions which are easy to generate fire, such as extension sockets, electric control boxes of refrigerators, motor pressing plates of air conditioner external units, shells of fan heaters and the like, the PP material needs to be subjected to flame retardant modification.
The flame-retardant modification of PP is realized by adding additives capable of delaying the combustion reaction process, such as brominated flame retardants, halogen-free intumescent flame retardants, hydroxide flame retardants, silicon flame retardants and the like, the highest grade of flame-retardant materials on the market is 5VA, and the sample plate cannot be burnt through after 5S combustion for 5 times, but can still be burnt through for a long time. In recent years, fire disasters caused by the ignition of an air conditioner outdoor unit often occur, particularly, the rescue is difficult after the fire of a high rise, the personal and property losses are large, and the performance of the currently used flame retardant plastic can not meet the requirements aiming at an electric control part of the air conditioner outdoor unit.
Disclosure of Invention
In order to solve the defects mentioned in the background art, the invention aims to provide a flame-retardant polypropylene material and a preparation method thereof, wherein the material has higher fire-retardant grade and can be used in occasions with high flame-retardant requirements.
The purpose of the invention can be realized by the following technical scheme:
a flame-retardant polypropylene material comprises 20-40 wt% of long glass fiber master batch and 60-80 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, the content of long glass fibers in the long glass fiber master batch is 55-65 wt%, and the long glass fiber master batch is prepared by impregnating long glass fibers with resin through an LFT-G forming die;
the flame-retardant master batch comprises the following raw materials in parts by weight:
further preferably, the polypropylene resin is a copolymer polypropylene, a homopolymer polypropylene or a mixture of both.
Further preferably, the hydroxide is one or a mixture of magnesium hydroxide and aluminum hydroxide.
Further preferably, the flame retardant synergist is antimony trioxide.
Further preferably, the antioxidant is a compound of antioxidant 1010 and antioxidant 168.
Further preferably, the long glass fiber has a length of 8 to 13 mm.
Further preferably, the lubricant is a mixture of calcium stearate and ethylene bis stearamide or modified ethylene bis stearamide.
The preparation method of the flame-retardant polypropylene material comprises the following steps:
s1, weighing the polypropylene resin, the hydroxide, the brominated flame retardant, the flame-retardant synergist, the nano filler, the antioxidant and the lubricant according to the weight ratio, and mixing for 5-10 minutes in a high-speed mixer;
s2, adding the mixed materials into a double-screw extruder for melt mixing, and obtaining the polypropylene flame-retardant master batch through extrusion, cooling, grain cutting and drying;
s3, impregnating resin into the long glass fiber through an LFT-G forming die to prepare long glass fiber master batches;
and S4, mixing the obtained flame-retardant master batch with the PP long fiber master batch according to the proportion to obtain the flame-retardant polypropylene material.
The invention has the beneficial effects that:
the flame-retardant polypropylene material prepared by the invention has a strong fireproof effect, is not penetrated after being burnt for a long time, and can be used for an electric control box of an unattended electric appliance and a contact part of an electric appliance outside an air conditioner.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 of the 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 following examples and comparative examples employ the following raw material specific information:
the copolymerized polypropylene is sold as K8003, and the manufacturer is Wuhan petrochemical;
homo-polypropylene, brand 150 PP powder, manufacturer jingling petrochemical;
decabromodiphenylethane, brand 8010, manufactured as Jinhaiyabao;
nano montmorillonite with the trade mark of 1.44P and Nanocor as a manufacturer;
modified ethylene bis stearamide, with the brand number TAS-2A, was produced in the name of Xingtai national light;
all materials are conventional and common products sold in the market.
Example 1
A flame-retardant polypropylene material comprises 30 wt% of long glass fiber master batch and 70 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, wherein the content of the long glass fiber is 55 wt%;
the flame-retardant master batch comprises the following raw materials in parts by weight: 23 parts of polypropylene copolymer, 35 parts of magnesium hydroxide, 25 parts of decabromodiphenylethane, 8 parts of antimony trioxide, 9 parts of nano silicon dioxide, 0.4 part of antioxidant and 1 part of lubricant.
The preparation method of the flame-retardant master batch comprises the following steps:
s1, weighing the polypropylene resin, the magnesium hydroxide, the bromodiphenylethane, the antimony trioxide, the nano-silica, the antioxidant and the lubricant according to the weight ratio, and mixing for 5-10 minutes in a high-speed mixer;
s2, adding the mixed materials into a double-screw extruder for melting and mixing, and obtaining the polypropylene flame-retardant master batch 1# through extrusion, cooling, grain cutting and drying;
s3, impregnating 8-13mm long glass fibers with resin through an LFT-G forming die to prepare long glass fiber master batches;
s4, mixing the obtained flame-retardant master batch 1# with the long-fiber master batch in proportion to obtain the strong-effect fireproof flame-retardant master batch.
Example 2
A flame-retardant polypropylene material comprises 30 wt% of long glass fiber master batch and 70 wt% of flame-retardant master batch No. 2;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, wherein the content of the long glass fiber is 65 wt%;
the flame-retardant master batch comprises the following raw materials in parts by weight: 30 parts of homopolymerized polypropylene, 32 parts of aluminum hydroxide, 21 parts of decabromodiphenylethane, 7 parts of antimony trioxide, 10 parts of nano montmorillonite, 0.5 part of antioxidant and 0.9 part of lubricant;
the preparation method of the flame-retardant master batch is the same as that of example 1.
Example 3
A flame-retardant polypropylene material comprises 30 wt% of long glass fiber master batch and 70 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, wherein the content of the long glass fiber is 60 wt%;
the flame-retardant master batch No. 3 comprises the following raw materials in parts by weight: 20 parts of polypropylene copolymer, 15 parts of homo-polypropylene, 20 parts of magnesium hydroxide, 15 parts of aluminum hydroxide, 21 parts of decabromodiphenylethane, 7 parts of antimony trioxide, 10 parts of nano-silicon dioxide, 0.5 part of antioxidant and 0.9 part of lubricant;
the preparation method of the flame-retardant master batch is the same as that of example 1.
Example 4
A flame-retardant polypropylene material comprises 30 wt% of long glass fiber master batch and 70 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, wherein the content of the long glass fiber is 55 wt%;
the flame-retardant master batch comprises the following raw materials in parts by weight: 30 parts of homopolymerized polypropylene, 32 parts of magnesium hydroxide, 21 parts of decabromodiphenylethane, 7 parts of antimony trioxide, 10 parts of nano kieselguhr, 0.5 part of antioxidant and 0.9 part of lubricant;
the preparation method of the flame-retardant master batch is the same as that of example 1.
Example 5
A flame-retardant polypropylene material comprises 30 wt% of long glass fiber master batch and 70 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, wherein the content of the long glass fiber is 65 wt%;
the flame-retardant master batch comprises the following raw materials in parts by weight: 35 parts of polypropylene copolymer, 30 parts of aluminum hydroxide, 19 parts of decabromodiphenylethane, 5 parts of antimony trioxide, 11 parts of nano silicon dioxide, 0.6 part of antioxidant and 0.8 part of lubricant;
the preparation method of the flame-retardant master batch is the same as that of example 1.
Comparative example 1
A flame-retardant polypropylene material comprises 20 wt% of long glass fiber master batch and 80 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, wherein the content of the long glass fiber is 60 wt%;
the raw material components of the flame-retardant master batch are the same as those in the embodiment 3;
the preparation method of the flame-retardant master batch is the same as that of example 1.
Comparative example 2
A flame-retardant polypropylene material comprises 40 wt% of long glass fiber master batch and 60 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, wherein the content of the long glass fiber is 60 wt%;
the raw material components of the flame-retardant master batch are the same as those in the embodiment 3;
the preparation method of the flame-retardant master batch is the same as that of example 1.
Performance detection
The flame retardant polypropylene materials prepared in examples 1-5 and comparative examples 1-2 were injection molded to obtain specimens, and the specimens and the sample plates were tested under the following conditions: the test bars were tested according to the UL94 vertical burning method; the panels were tested according to UL945V test protocol with a flame height of 127mm and a burn time of 6 minutes, and the data obtained are shown in Table 1 below:
TABLE 1 Performance test results for flame retardant Polypropylene materials
The experimental data show that the strong flame retardant PP material disclosed by the invention can resist burning for 6 minutes without perforation, can be widely applied to electrical equipment elements (an electric control box of an air conditioner outdoor unit and an electric control box of an unattended electrical appliance) with high flame retardant requirements, and can protect the safety of lives and properties.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 shows and describes the general principles, essential 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, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (8)
1. The flame-retardant polypropylene material is characterized by comprising 20-40 wt% of long glass fiber master batch and 60-80 wt% of flame-retardant master batch;
the long glass fiber master batch is a long glass fiber reinforced polypropylene material, the content of long glass fibers in the long glass fiber master batch is 55-65 wt%, and the long glass fiber master batch is prepared by impregnating long glass fibers with resin;
the flame-retardant master batch comprises the following raw materials in parts by weight:
2. the flame retardant polypropylene material according to claim 1, wherein the polypropylene resin is a copolymer polypropylene, a homopolymer polypropylene or a mixture of the two.
3. The flame retardant polypropylene material according to claim 1, wherein the hydroxide is one or a mixture of magnesium hydroxide and aluminum hydroxide.
4. The flame retardant polypropylene material according to claim 1, wherein the flame retardant synergist is antimony trioxide.
5. The flame retardant polypropylene material according to claim 1, wherein the antioxidant is a combination of antioxidant 1010 and antioxidant 168.
6. The flame retardant polypropylene material according to claim 1, wherein the long glass fiber has a length of 8-13 mm.
7. The flame retardant polypropylene material according to claim 1, wherein the lubricant is a mixture of calcium stearate and ethylene bis stearamide or modified ethylene bis stearamide.
8. The method for preparing a flame retardant polypropylene material according to any one of claims 1 to 7, comprising the steps of:
s1, weighing the polypropylene resin, the hydroxide, the brominated flame retardant, the flame-retardant synergist, the nano filler, the antioxidant and the lubricant according to the weight ratio, and mixing for 5-10 minutes in a high-speed mixer;
s2, adding the mixed materials into a double-screw extruder for melt mixing, and obtaining the polypropylene flame-retardant master batch through extrusion, cooling, grain cutting and drying;
s3, impregnating resin into the long glass fiber through an LFT-G forming die to prepare long glass fiber master batches;
and S4, mixing the obtained flame-retardant master batch with the PP long fiber master batch according to the proportion to obtain the flame-retardant polypropylene material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116120660A (en) * | 2022-12-13 | 2023-05-16 | 安庆会通新材料有限公司 | High-weather-resistance flame-retardant reinforced polypropylene composite material and preparation method thereof |
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|---|---|---|---|---|
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| CN106366443A (en) * | 2016-09-06 | 2017-02-01 | 株洲时代新材料科技股份有限公司 | Long glass fiber enhanced polypropylene material, and preparation method and application thereof |
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| CN105694227A (en) * | 2016-04-14 | 2016-06-22 | 山东海王化工股份有限公司 | High-filled alkane-antimony combined flame-retardant masterbatch and preparation method and application thereof |
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| CN116120660A (en) * | 2022-12-13 | 2023-05-16 | 安庆会通新材料有限公司 | High-weather-resistance flame-retardant reinforced polypropylene composite material and preparation method thereof |
| CN116120660B (en) * | 2022-12-13 | 2024-06-04 | 安庆会通新材料有限公司 | High-weather-resistance flame-retardant reinforced polypropylene composite material and preparation method thereof |
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Application publication date: 20220208 |