CN112724534A - Flame-retardant PP infiltration material for glass fiber flame-retardant reinforced PP (polypropylene) unidirectional tape and preparation method thereof - Google Patents
Flame-retardant PP infiltration material for glass fiber flame-retardant reinforced PP (polypropylene) unidirectional tape and preparation method thereof Download PDFInfo
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 99
- 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 92
- 239000003365 glass fiber Substances 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000004743 Polypropylene Substances 0.000 title abstract description 98
- -1 polypropylene Polymers 0.000 title abstract description 10
- 230000008595 infiltration Effects 0.000 title abstract description 9
- 238000001764 infiltration Methods 0.000 title abstract description 9
- 229920001155 polypropylene Polymers 0.000 title abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 18
- 230000000996 additive effect Effects 0.000 claims abstract description 16
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 9
- 229920002545 silicone oil Polymers 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- DXZMANYCMVCPIM-UHFFFAOYSA-L zinc;diethylphosphinate Chemical compound [Zn+2].CCP([O-])(=O)CC.CCP([O-])(=O)CC DXZMANYCMVCPIM-UHFFFAOYSA-L 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims abstract description 3
- 238000005470 impregnation Methods 0.000 claims abstract 4
- 239000000155 melt Substances 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 9
- 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 8
- 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 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 229940008099 dimethicone Drugs 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 claims 2
- MWFNQNPDUTULBC-UHFFFAOYSA-N phosphono dihydrogen phosphate;piperazine Chemical compound C1CNCCN1.OP(O)(=O)OP(O)(O)=O MWFNQNPDUTULBC-UHFFFAOYSA-N 0.000 claims 2
- 229920000388 Polyphosphate Polymers 0.000 claims 1
- 239000012752 auxiliary agent Substances 0.000 claims 1
- 239000001205 polyphosphate Substances 0.000 claims 1
- 235000011176 polyphosphates Nutrition 0.000 claims 1
- 238000002791 soaking Methods 0.000 abstract description 8
- 238000005054 agglomeration Methods 0.000 abstract description 4
- 230000002776 aggregation Effects 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 4
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- 239000004033 plastic Substances 0.000 abstract description 3
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 9
- 239000000835 fiber Substances 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 6
- 229920001519 homopolymer Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000000979 retarding effect Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000012815 thermoplastic material Substances 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920001431 Long-fiber-reinforced thermoplastic Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
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- 238000011049 filling Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention provides a flame-retardant PP infiltration material for a glass fiber flame-retardant reinforced PP (polypropylene) unidirectional tape and a preparation method thereof, belonging to the technical field of plastic modification. The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape comprises the following components in parts by mass: 15-25 parts of homopolymerized PP, 15-25 parts of copolymerized PP, 7-15 parts of compatilizer, 45-55 parts of halogen-free flame retardant, 0.3-0.5 part of silicone oil, 0.3-0.5 part of antioxidant, 0.5-1.5 parts of dendritic additive and 2-3 parts of black master batch. The flame-retardant PP impregnating material is matched with ultrahigh-flow PP and a dendritic additive under the action of an efficient polar modified compatilizer to generate a synergistic effect, so that the flame retardant can be uniformly dispersed in the composite material at ultrahigh content, agglomeration is avoided, and effective impregnation of glass fibers is realized. The melting index of the obtained flame-retardant PP soaking material can reach 110g/10min, the oxygen index can reach 51%, and the use requirement of the glass fiber flame-retardant reinforced PP unidirectional tape for the air-conditioning duct on the motor car can be met.
Description
Technical Field
The invention belongs to the technical field of plastic modification, and particularly relates to a flame-retardant PP infiltration material for a glass fiber flame-retardant reinforced PP unidirectional tape and a preparation method thereof.
Background
The fiber-reinforced thermoplastic materials are classified into short fiber-reinforced thermoplastic materials (fiber retention length <1MM), long fiber-reinforced thermoplastic materials (fiber retention length 1-25 MM) and continuous fiber-reinforced thermoplastic materials (theoretical fiber retention length is consistent with the final size of the product). The continuous fiber reinforced thermoplastic material has the best performance, and can be used for replacing steel by plastic, so that the weight of the product can be greatly reduced, and the product can be recycled.
The glass fiber reinforced PP unidirectional tape is a composite material which is formed by using continuous fibers as a reinforcing material and thermoplastic polypropylene resin as a base material through a corresponding infiltration process and has high strength, high impact property and complete recoverability. The glass fiber reinforced PP unidirectional belt is widely applied to the traffic field due to the advantages of light weight, fuel economy, acceleration, climbing property, safety and the like. The matrix resin used in the glass fiber reinforced PP unidirectional tape is used for orienting and positioning fibers to bond the fibers into a whole so as to transfer stress in the stress process of a product. However, the unidirectional tapes made of high flow PP as the matrix resin have the problems of flammability, poor safety, etc.
The technical conditions for flame retarding of the interior material for the motor train unit TB/T3237-2010 Standard of the flame retarding of the interior material for the motor train unit stipulate the flame retarding performance of the interior material for the motor train unitThe method comprises the following steps: the oxygen index of the material for connecting and sealing the air-conditioning air duct and the inner wall and the material for connecting and sealing the air-conditioning air duct is more than or equal to 32 percent, and the DS1.5≤100，DS4Less than or equal to 200. Therefore, a flame retardant PP material with high flame retardance and low smoke density is needed as matrix resin, so that more halogen-free flame retardant has to be added in the formula to enhance the flame retardance, but the addition of the halogen-free flame retardant with higher content often causes agglomeration and uneven dispersion in the material, the melt is mud-shaped, the effective infiltration of the material on glass fibers cannot be realized, the problems of serious exposure of the glass fibers on the surface of a product, fluffing, pits, unsmooth and the like are caused, the appearance, the flame retardance, the mechanical property and the like of the product are seriously influenced, and the unidirectional tape cannot be used.
Disclosure of Invention
The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape and the preparation method thereof provided by the invention have the advantages of high fluidity, high oxygen index, low smoke density and good glass fiber impregnating effect, and can meet the use requirements of the glass fiber flame-retardant reinforced unidirectional tape. The obtained unidirectional tape has a clean and smooth surface, does not have pits, does not have exposed glass fibers, and can meet the requirement of TB/T3237-2010.
In order to achieve the purpose, the invention provides a flame-retardant PP (polypropylene) impregnating material for a glass fiber flame-retardant reinforced PP unidirectional tape, which comprises the following components in parts by mass: 15-25 parts of homopolymerized PP, 15-25 parts of copolymerized PP, 7-15 parts of compatilizer, 45-55 parts of flame retardant, 0.3-0.5 part of silicone oil, 0.3-0.5 part of antioxidant, 0.5-1.5 parts of dendritic additive and 2-3 parts of black master batch.
It is understood that the mass parts of the components can be adjusted within the above ranges by those skilled in the art according to actual conditions, for example, the homopolyPP can be 16, 17, 18, 19, 20, 21, 22, 23, 24 parts or any parts value within the above ranges, the copolPP can be 16, 17, 18, 19, 20, 21, 22, 23, 24 parts or any parts value within the above ranges, the compatibilizer can be 8, 9, 10, 11, 12, 13, 14 parts or any parts value within the above ranges, the flame retardant can be 46, 47, 48, 49, 50, 51, 52, 53, 54 parts or any parts value within the above ranges, the silicone oil can be 0.35, 0.4, 0.45 parts or any parts value within the above ranges, the antioxidant can be 0.35, 0.4, 0.45 parts or any parts value within the above ranges, and the dendritic additive can be 0.6, 0.7, 0.8, 0.9, 1.0, 1.1.1, 1.2, 1.1.1.4, and 3.45 parts or any parts value within the above ranges, 1.4 parts or any part value within the above range.
Preferably, the homopolymeric PP is a high flow PP having a melt index (230 ℃, 2.16Kg) of 1600-2000g/10 min. The molecular weight of the homopolymerized PP is 50000-70000, and the molecular weight distribution breadth index is 2-3. Such high flow PP has a low molecular weight, a narrow molecular weight distribution, and a low viscosity in a high-temperature molten state, and further contributes to uniform dispersion of the flame retardant particles among polypropylene molecules, and it is understood that those skilled in the art can adjust the melt index of the homopolypropylene within the above range according to actual circumstances, and for example, the melt index may be 1650, 1700, 1750, 1800, 1850, 1900, 1950g/10min or any point value within the above range. In a preferred embodiment, the melt index of the homopolymeric PP is also 1800g/10 min. In a preferred embodiment, the PP homopolymer is a high flow PP available from Basell, with a melt index (230 ℃, 2.16Kg) of 1800g/10min and under the designation MF 650Y.
Preferably, the copolymerized PP is PP having a melt index (230 ℃ C., 2.16Kg) of 60 to 80g/10 min. It will be appreciated that the melt index of the co-PP may be adjusted by a person skilled in the art within the above-mentioned range, depending on the actual situation, and may for example also be 62, 65, 66, 68, 70, 72, 75, 78g/10min or any point within the above-mentioned range. In a preferred embodiment, the PP copolymer is produced by northern Europe chemical industry, and has a melt index (230 ℃, 2.16Kg) of 70g/10min and a mark of BJ368 MO.
Preferably, the compatilizer adopts maleic anhydride grafted PP with ultrahigh grafting rate, the melt index (190 ℃, 2.16Kg) is 120g/10min, and the grafting rate is (0.9-1.1)%. It can be understood that the compatilizer with the ultrahigh grafting rate greatly endows the PP with polarity and bondability, can greatly improve the interface binding force of the PP, the glass fiber and the flame retardant, improves the dispersibility of the flame retardant in the polypropylene, enhances the glass fiber infiltration effect of the infiltration material, and obviously improves the tensile strength, the bending strength, the impact strength and the like of the final product unidirectional tape. If the content of the compatilizer is too low, the cohesiveness of PP, glass fiber and the flame retardant is influenced, when the glass fiber is soaked, the flame retardant is unevenly dispersed among the glass fibers, the flame retardance is influenced, the bonding force between the PP and the glass fiber and the flame retardant is poor, the flame retardant PP is peeled off from the glass fiber, the soaking effect is poor, the obtained unidirectional tape has poor flame retardance and uneven surface. If the content of the compatilizer is too high and the content of the anhydride is excessive, the reaction active points are not increased any more, the performance of the infiltrated glass fiber is not increased any more, the odor and the fluidity of the material are influenced, and the material cost is also increased. In a preferred embodiment, the compatilizer is Shenyangtong grafted PP with the brand number of KT-1D.
Preferably, the flame retardant is a piperazine pyrophosphate compound type halogen-free flame retardant. It can be understood that the halogen-free flame retardant is used for the purpose of obtaining low smoke density and high oxygen index, and is beneficial to escape of people in case of fire. In a preferable scheme, the flame retardant is a halogen-free flame retardant produced by the chemical production of the prasufosfamide, and the grade is 110 DM.
Preferably, the dendritic additive is a compound containing-NH2、-OH、-COOCH3At least one of, -COOH, -COONa and other additives with special functional group dendritic structure, and the theoretical molecular weight is 5000-6000. The dendritic molecular material has good geometric symmetry and a large number of surface functional groups, so that the dendritic molecular material can have high chemical activity. The dispersion degree of the flame retardant in a system can be obviously improved, the filling proportion of the flame retardant is improved, the surface glossiness of a product is improved, and the appearance and fiber floating phenomenon are improved. In a preferred embodiment, the dendritic additive is CYD-P214 produced by Waishahi molecular New Material Co.
Preferably, the silicone oil is a dimethicone having a viscosity of 100. It can be understood that the dimethyl silicone oil with the viscosity of 100 is selected, so that the dimethyl silicone oil can be better adhered to the surface of PP particles, the flame retardant is wetted and wrapped on the surface of the PP particles, the dispersibility of the flame retardant is improved, and meanwhile, the proper amount of the dimethyl silicone oil does not influence the flame retardance of the material.
Preferably, the antioxidant is an antioxidant 1010 and an antioxidant 168, and the added ratio of the antioxidant is 1: 1.
Preferably, the flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape has a melt index of up to 110g/10min and an oxygen index of up to 51%, so that the surface of the obtained unidirectional tape is clean and smooth, and has no pits or exposed glass fibers.
The invention also provides a preparation method of the flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape according to any one of the technical schemes, which comprises the following steps:
weighing the components according to the mass parts, placing the components in a high-speed stirrer to be uniformly stirred, then transferring the components into a double-screw extruder to be melted and extruded, and carrying out water cooling and grain cutting to obtain the product.
It can be understood that, in the preparation method, the components are weighed and then placed in a high-speed stirrer to be uniformly stirred for 5-10min, and then the components are transferred into a double-screw extruder to be melted and extruded, wherein the temperature of a charging barrel of the double-screw extruder is 190-200 ℃ during extrusion, the temperature of the charging barrel can ensure that PP is fully melted, the flame retardant is not decomposed, and a good dispersion effect is easy to achieve. And after extrusion, water-cooling and granulating to obtain the product. The product is preferably in the shape of a cylindrical pellet.
Compared with the prior art, the invention has the advantages and positive effects that:
the invention provides a flame-retardant PP (polypropylene) impregnating material for a glass fiber flame-retardant reinforced PP unidirectional tape, which is matched with PP with ultrahigh fluidity and a dendritic additive under the action of an efficient polar modified compatilizer to generate a synergistic effect, so that the problem that the glass fiber impregnating effect is seriously influenced by agglomeration and uneven dispersion of a high-content flame retardant in the material is solved, the flame retardant can be uniformly dispersed in a composite material even under ultrahigh content, glass fibers are effectively impregnated, and the surface of the obtained unidirectional tape is neat and smooth, has no pits and has no exposed glass fibers.
The melting index of the flame-retardant PP soaking material obtained in the formula can reach 110g/10min, the oxygen index can reach 51%, and the flame-retardant PP soaking material can be effectively used for preparing the glass fiber flame-retardant reinforced PP unidirectional tape.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, 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 flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape comprises the following components in parts by mass: 15 parts of homopolymerized PPMF650Y, 25 parts of copolymerized PP BJ368MO, 15 parts of compatilizer KT-1D, 45 parts of flame retardant 110DM, 0.15 part of antioxidant 1010, 0.15 part of antioxidant 168, 0.5 part of dendritic additive C Y D-P214 and 2 parts of black master batch.
Weighing the components according to the mass parts, placing the components in a high-speed stirrer to stir for 5-10min, uniformly mixing, transferring the mixture into a double-screw extruder to melt and extrude (the temperature of a charging barrel of the extruder is 190-.
Example 2
The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape comprises the following components in parts by mass: 20 parts of homopolymerized PPMF650Y, 20 parts of copolymerized PP BJ368MO, 10 parts of compatilizer KT-1D, 50 parts of flame retardant 110DM, 0.2 part of antioxidant 1010, 0.2 part of antioxidant 168, 1 part of dendritic additive C Y D-P214 and 2.5 parts of black master batch.
The preparation method is the same as example 1.
Example 3
The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape comprises the following components in parts by mass: 25 parts of homopolymerized PPMF650Y, 15 parts of copolymerized PP BJ368MO, 7 parts of compatilizer KT-1D, 55 parts of flame retardant 110DM, 0.25 part of antioxidant 1010, 0.25 part of antioxidant 168, 1.5 parts of dendritic additive C Y D-P214 and 3 parts of black master batch.
The preparation method is the same as example 1.
Comparative example 1
The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape comprises the following components in parts by mass: 20 parts of homopolymerized PPMF650Y, 30 parts of copolymerized PP BJ368MO, 50 parts of flame retardant 110DM, 0.2 part of antioxidant 1010, 0.2 part of antioxidant 168, 1 part of dendritic additive C Y D-P214 and 2.5 parts of black master batch.
The preparation method is the same as example 1.
In comparison to example 2, comparative example 1, in which the compatibilizer was removed and the amount of compatibilizer removed was complemented by the amount of co-PP BJ368MO, the removed compatibilizer was PP grafted maleic anhydride, and co-PP BJ368MO was close in flow to the compatibilizer, except that no maleic anhydride grafting was present, making an equivalent replacement comparison reasonable.
Comparative example 2
The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape comprises the following components in parts by mass: 40 parts of PP BJ368MO, 10 parts of a compatilizer KT-1D, 50 parts of a flame retardant 110DM, 0.2 part of an antioxidant 1010, 0.2 part of an antioxidant 168, 1 part of a dendritic additive CYD-P214 and 2.5 parts of a black master batch.
The preparation method is the same as example 1.
In comparison with example 2, comparative example 2 removed homopolymeric PPMF650Y and the amount of removed homopolymeric PPMF650Y was complemented with copolymeric PP BJ368MO to investigate the effect of ultra high flow PP.
Comparative example 3
The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape comprises the following components in parts by mass: 20 parts of homopolymerized PPMF650Y, 20 parts of copolymerized PP BJ368MO, 10 parts of compatilizer KT-1D, 50 parts of flame retardant 110DM, 0.2 part of antioxidant 1010, 0.2 part of antioxidant 168 and 2.5 parts of black master batch.
The preparation method is the same as example 1.
Performance testing
The following criteria were carried out on the products prepared in examples 1 to 3 and comparative examples 1 to 3, and the specific data are shown in table 1.
Table 1 product performance index test data
The data in table 1 show that the material provided by the invention is matched with PP (polypropylene) with ultrahigh fluidity and a dendritic additive under the action of an efficient polar modified compatilizer to generate a synergistic effect, so that the problem that the glass fiber infiltration effect is seriously influenced due to the agglomeration and uneven dispersion of a high-content flame retardant in the material is solved, the flame retardant can be uniformly dispersed in the composite material under the ultrahigh content, the glass fiber is effectively infiltrated, and the surface of the obtained unidirectional tape is neat, smooth, free of pits and free of exposed glass fiber. The obtained flame-retardant PP soaking material has a melt index as high as 110g/10min and an oxygen index as high as 51%, and can be effectively used for preparing glass fiber flame-retardant reinforced PP unidirectional tapes. Comparative example 1 does not add the compatilizer, the part of the compatilizer is replaced by the equal amount of the copolymerized PP BJ368MO, and it can be seen that the combination force between the glass fiber and the sizing material is poor due to the absence of the compatilizer, and the flame-retardant PP material is easy to peel off from the glass fiber. Comparative example 2 does not use ultra-high fluidity PP, and the parts of the ultra-high fluidity PP are equivalently replaced by the copolymerized PP BJ368MO, so that the effect of the soaking glass fiber by the soaking material is poor, the glass fiber is seriously fluffed, and the soaking cannot be effectively carried out. Comparative example 3 does not use dendritic additive, the glass fiber is exposed, and the surface is clean and smooth.
Claims (10)
1. The flame-retardant PP impregnating material for the glass fiber flame-retardant reinforced PP unidirectional tape is characterized by comprising the following components in parts by mass: 15-25 parts of homopolymerized PP, 15-25 parts of copolymerized PP, 7-15 parts of compatilizer, 45-55 parts of flame retardant, 0.3-0.5 part of silicone oil, 0.3-0.5 part of antioxidant, 0.5-1.5 parts of dendritic additive and 2-3 parts of black master batch.
2. The flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape as claimed in claim 1, wherein the homopolymerized PP adopts high-flow PP with a melt index of 1600-2000g/10 min.
3. The flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape according to claim 1, wherein the PP copolymer has a melt index of 60-80g/10 min.
4. The flame retardant PP impregnation for the glass fiber flame retardant reinforced PP unidirectional tape according to claim 1, wherein the compatilizer is at least one of maleic anhydride grafted PP, maleic anhydride grafted PE or maleic anhydride grafted POE.
5. The flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape according to claim 1, wherein the halogen-free flame retardant is at least one of piperazine diphosphate, piperazine pyrophosphate, piperazine polyphosphate and other auxiliary agents.
6. The flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape according to claim 1, wherein the silicone oil is a dimethicone with a viscosity of 100; the antioxidant adopts an antioxidant 1010 and an antioxidant 168, and the adding ratio of the antioxidant is 1: 1.
7. The flame-retardant PP impregnation material for the glass fiber flame-retardant reinforced PP unidirectional tape according to claim 1, wherein the dendritic additive is a flame-retardant PP impregnation material containing-NH2、-OH、-COOCH3-COOH, -COONa, and other additives with special functional group dendritic structure.
8. The flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape according to claim 1, wherein the melting index of the flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape is up to 110g/10min, and the oxygen index is up to 51%.
9. The preparation method of the flame-retardant PP impregnating compound for the glass fiber flame-retardant reinforced PP unidirectional tape according to any one of claims 1 to 7, which is characterized by comprising the following steps:
weighing the components according to the mass parts, placing the components in a high-speed stirrer to be uniformly stirred, then transferring the components into a double-screw extruder to be melted and extruded, and carrying out water cooling and grain cutting to obtain the product.
10. The method as claimed in claim 9, wherein the barrel temperature of the twin-screw extruder at the time of extrusion is 190-200 ℃.
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| CN110016182A (en) * | 2019-03-21 | 2019-07-16 | 江苏金发科技新材料有限公司 | Ageing-resistant anti-precipitation long glass fiber-reinforced polypropylene materials and preparation method thereof |
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| CN108276664A (en) * | 2017-12-29 | 2018-07-13 | 上海日之升科技有限公司 | Switch on wall fire-retardant continuous long glass fiber reinforced PP materials and preparation method thereof |
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