CN111218062A - High-strength flame-retardant PP composite material and preparation method thereof - Google Patents

High-strength flame-retardant PP composite material and preparation method thereof Download PDF

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CN111218062A
CN111218062A CN202010099307.7A CN202010099307A CN111218062A CN 111218062 A CN111218062 A CN 111218062A CN 202010099307 A CN202010099307 A CN 202010099307A CN 111218062 A CN111218062 A CN 111218062A
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parts
retardant
composite material
flame
temperature
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刘光锋
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Dongguan Gaoneng Polymer Co ltd
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Dongguan Gaoneng Polymer Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • 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
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • 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
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • 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
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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Abstract

The invention relates to the technical field of high polymer materials, in particular to a high-strength flame-retardant PP composite material and a preparation method thereof. The high-strength flame-retardant PP composite material comprises the following raw materials in parts by weight: 80-110 parts of PP, 16-24 parts of polyethylene, 10-15 parts of ethylene-vinyl acetate copolymer, 6-12 parts of inorganic filler, 5-10 parts of glass fiber, 4-7 parts of cross-linking agent, 0.1-1.5 parts of antioxidant and 9-15 parts of flame retardant. The flame retardant is added into the high-strength flame-retardant PP composite material, so that the flame retardance of the high-strength flame-retardant PP composite material is improved, the prepared PP composite material has good impact strength and tensile strength, the preparation method is simple and efficient to operate and convenient to control, industrial production is facilitated, and the prepared product is stable in quality.

Description

High-strength flame-retardant PP composite material and preparation method thereof
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a high-strength flame-retardant PP composite material and a preparation method thereof.
Background
Polypropylene (PP) is thermoplastic synthetic resin with excellent performance, is colorless semitransparent thermoplastic light general-purpose plastic, and has the advantages of good chemical resistance, heat resistance, electrical insulation, good high-wear-resistance processing performance and the like. With the development of science and technology and the progress of society, polypropylene is widely applied in various fields such as machinery, automobiles, electronic and electric appliances, buildings, textiles, packaging and the like, but meanwhile, the flame retardant property and the use safety of polypropylene are increasingly paid more attention to people. The existing flame-retardant polypropylene is basically added with a flame retardant which plays a certain flame-retardant role, but the flame retardant with excessive addition amount often easily causes great influence on the mechanical property, the processability and the like of the material, can not meet the requirement and is limited in use.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a high-strength flame-retardant PP composite material which has excellent flame-retardant performance and mechanical performance.
The invention also aims to provide a preparation method of the high-strength flame-retardant PP composite material, which has the advantages of simple process, convenient operation and control, high production efficiency, contribution to industrial production and stable quality of the prepared product.
One of the purposes of the invention is realized by the following technical scheme: a high-strength flame-retardant PP composite material comprises the following raw materials in parts by weight:
80-110 parts of PP
16-24 parts of polyethylene
10-15 parts of ethylene-vinyl acetate copolymer
6-12 parts of inorganic filler
5-10 parts of glass fiber
4-7 parts of cross-linking agent
0.1 to 1.5 portions of antioxidant
9-15 parts of a flame retardant.
The high-strength flame-retardant PP composite material provided by the invention takes polyethylene and polypropylene as main raw materials, adopts ethylene-vinyl acetate copolymer as a compatilizer, is matched with inorganic filler and glass fiber antioxidant, and is added with a flame retardant to improve the flame retardance of the PP composite material, so that the flame retardance reaches UL94 (1.5 mm) V-0 level, and the mechanical property is not reduced. The glass fiber is uniformly dispersed in the system, and can enhance the mechanical property of the PP composite material. Further, the glass fiber is alkali-free glass fiber. The alkali-free glass fiber has better ductility, strength, rigidity and aging resistance than the alkali glass fiber. The invention adopts the ethylene-vinyl acetate copolymer as the compatilizer, and introduces the vinyl acetate monomer into the molecular chain of the ethylene-vinyl acetate copolymer, thereby improving the compatibility of the glass fiber, the flame retardant, the inorganic filler, the polyethylene and the polypropylene PP in the PP composite material system, forming an effective framework and improving the comprehensive mechanical property and the flame retardance of the PP composite material. Further, the ethylene-vinyl acetate copolymer is preferably, but not limited to, EVA, du pont 260 usa.
Further, the polypropylene is homopolymerized polypropylene. The polypropylene is preferably, but not limited to, Yanshan petrochemical K1008 polypropylene. The invention adopts the homopolymerized polypropylene and optimizes and limits the content of the homopolymerized polypropylene, and the polypropylene has good strength and good blending dispersibility with other raw materials, thereby being beneficial to improving the comprehensive mechanical property of the PP composite material. Further, the polyethylene is linear low density polyethylene. The polyethylene is preferably, but not limited to, a Yankee 7042 linear low density polyethylene. The invention adopts the linear low-density polyethylene to be matched with the polypropylene, and improves the heat resistance, the environmental stress crack resistance, the impact strength and the tearing strength of the PP composite material.
Further, the polyethylene is prepared by mixing linear low density polyethylene with the melt index of 2.1-3.0g/10min and linear low density polyethylene with the melt index of 0.3-0.7g/10min according to the weight ratio of 2-3: 1 are mixed. The melt indices were measured at 230 ℃ under a load of 2.16 kg. The invention adopts the polyethylene mixed by the two linear low-density polyethylenes with different physical properties, and the polyethylene is matched with the polypropylene, so that the heat resistance, the environmental stress crack resistance, the impact strength and the tearing strength of the PP composite material are improved.
Further, the inorganic filler is at least one of calcium carbonate, talcum powder and mica powder. By adopting the inorganic filler, the ratio of PP to other resins can be reduced, so that the cost is reduced, and the mechanical property and the weather resistance of the PP material are improved. Preferably, the inorganic filler is prepared from calcium carbonate, talcum powder and mica powder in a weight ratio of 1-2: 1-2: 1.
Further, the antioxidant is at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076. The antioxidant can inhibit thermal degradation and oxidative degradation of the PP composite material, and improve the aging resistance of the PP composite material, so that the service life of the PP composite material is prolonged.
Further, the lubricant is at least one of zinc stearate, calcium stearate and polyethylene wax. Preferably, the lubricant consists of zinc stearate, calcium stearate and polyethylene wax according to the weight ratio of 2-3:0.5-1.5:1, and the lubricant can prevent the PP composite material from generating defects due to adhesion in a machine or a mould and is helpful for improving the thermal stability of the PP composite material.
Further, the crosslinking agent is at least one of dicumyl peroxide and di-tert-butyl peroxide. The crosslinking agent is adopted in the invention, which is beneficial to forming a bridging structure among polyethylene, polypropylene and ethylene-vinyl acetate copolymer, so that the inorganic filler and the flame retardant have good dispersibility in a PP composite material system, and the prepared PP composite material has good flame retardance, impact resistance and stretchability. Preferably, the cross-linking agent is prepared by mixing dicumyl peroxide and di-tert-butyl peroxide in a weight ratio of 1-2: 1.
Further, the content of the vinyl acetate in the ethylene-vinyl acetate copolymer is 14-20 wt%. The vinyl acetate monomer is introduced into the molecular chain of the ethylene-vinyl acetate copolymer, and the content of the vinyl acetate is controlled, so that the compatibility of each component in a modified PP composite material system can be improved. The flexibility, impact resistance and weather resistance of the PP composite material are improved.
Further, the preparation method of the flame retardant comprises the following steps:
s1, uniformly mixing 30-40 parts of 2, 2-bis (4-hydroxyphenyl) propane, 10-14 parts of cyanuric chloride, 10-15 parts of melamine pyrophosphate, 14-18 parts of cage octa-poly (trimethylsiloxy) silsesquioxane and 25-32 parts of a dispersing agent by weight to obtain a mixture A;
s2, adding 11-16 parts of nano graphene oxide, 4-6 parts of nano titanium dioxide, 1-3 parts of cerium molybdate and 5-9 parts of diisopropylamine into the mixture A, heating to 50-70 ℃, continuously stirring, and keeping the temperature for 60-120min to obtain a mixture B;
and S3, washing the mixture B with deionized water, drying and grinding to obtain the flame retardant.
Further, the dispersing agent is composed of polyethylene glycol and tetrahydrofuran according to a weight ratio of 0.5-2: 1. The dispersing agent has good compatibility with all raw materials, is beneficial to uniform dispersion of all raw materials, and further improves the comprehensive performance of the PP composite material.
According to the invention, 2-bis (4-hydroxyphenyl) propane, cyanuric chloride and cage octa (trimethylsiloxy) silsesquioxane are adopted to coat melamine pyrophosphate to form an integral structure, so that the PP composite material has the characteristics of low smoke density, low toxicity and low corrosivity when being combusted, and has an excellent flame retardant effect; the nano titanium dioxide can improve the ultraviolet resistance, the antibacterial property, the self-cleaning property and the ageing resistance of the composite material, and further improve the flame retardant property and the surface property of the composite material. The preparation process simultaneously carries out surface modification on the graphene oxide and the nano titanium dioxide, and greatly improves the compatibility of the graphene oxide and the nano titanium dioxide with PP, polyethylene and ethylene-vinyl acetate copolymer in a PP composite material system.
The other purpose of the invention is realized by the following technical scheme: the preparation method of the high-strength flame-retardant PP composite material comprises the following steps:
mixing the other raw materials except the glass fiber in proportion, adding the mixed raw materials into an extruder from a main feeding port, and adding the glass fiber into the extruder from a side feeding port; and performing melt extrusion granulation to obtain the high-strength flame-retardant PP composite material.
Further, the screw rotating speed of the double-screw extruder is 200-300r/min, the temperature of a first zone of the double-screw extruder is 170-190 ℃, the temperature of a second zone of the double-screw extruder is 180-200 ℃, the temperature of a third zone of the double-screw extruder is 190-210 ℃, the temperature of a fourth zone of the double-screw extruder is 190-210 ℃, the temperature of a fifth zone of the double-screw extruder is 210-230 ℃, the temperature of a sixth zone of the double-screw extruder is 220-240 ℃, the temperature of a seventh zone of the double-screw extruder is 220-240 ℃, the temperature of an eighth zone of; the side feeding port is arranged between the five areas and the six areas.
The preparation method of the PP composite material is simple and efficient to operate, convenient to control and beneficial to industrial production. The invention can ensure that the PP composite material is stably extruded, has good formability, and has good mechanical comprehensive performance and flame retardance by strictly controlling the temperature of each zone in the extrusion process. The glass fiber is added at a proper time, so that the glass fiber is prevented from being easily sheared too much by an extruder due to too early addition time, and the reinforcement effect is prevented from being reduced; and the phenomenon that the PP composite material is unevenly mixed when being added too late is avoided, so that the integral enhancement effect of the PP composite material is influenced.
The invention has the beneficial effects that: the high-strength flame-retardant PP composite material provided by the invention takes polyethylene and polypropylene as main raw materials, adopts ethylene-vinyl acetate copolymer as a compatilizer, is matched with inorganic filler and antioxidant, is added with a flame retardant to improve the flame retardance of the high-strength flame-retardant PP composite material, and meanwhile, the prepared PP composite material has good impact strength and tensile strength. The preparation method of the high-strength flame-retardant PP composite material is simple and efficient to operate, convenient to control and beneficial to industrial production, and the prepared product is stable in quality.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
A high-strength flame-retardant PP composite material comprises the following raw materials in parts by weight:
95 parts of PP
19 parts of polyethylene
Ethylene-vinyl acetate copolymer 12 parts
Inorganic filler 8 parts
6 parts of glass fiber
5 portions of cross-linking agent
0.5 part of antioxidant
12 parts of a flame retardant.
Further, the polypropylene is homopolymerized polypropylene. The polypropylene is Yanshan petrochemical K1008. The polyethylene is linear low density polyethylene. The polyethylene is Yangzhilized 7042 linear low density polyethylene.
Further, the inorganic filler is prepared from calcium carbonate, talcum powder and mica powder according to a weight ratio of 1.5: 1: 1. The antioxidant is composed of an antioxidant 1010, an antioxidant 168 and an antioxidant 1076 according to the weight ratio of 2:1: 1.
Further, the lubricant is composed of zinc stearate, calcium stearate and polyethylene wax according to the weight ratio of 2: 1.5: 1. The cross-linking agent is prepared from dicumyl peroxide and di-tert-butyl peroxide in a weight ratio of 1.5: 1.
Further, the ethylene-vinyl acetate copolymer is preferably, but not limited to, EVA, du pont 260 usa.
Further, the preparation method of the flame retardant comprises the following steps:
s1, uniformly mixing 35 parts of 2, 2-bis (4-hydroxyphenyl) propane, 12 parts of cyanuric chloride, 13 parts of melamine pyrophosphate, 16 parts of cage octa-poly (trimethylsiloxy) silsesquioxane and 28 parts of a dispersing agent by weight to obtain a mixture A;
s2, adding 14 parts of nano graphene oxide, 5 parts of nano titanium dioxide, 2 parts of cerium molybdate and 7 parts of diisopropylamine into the mixture A, heating to 60 ℃, continuously stirring, and keeping the temperature for 90min to obtain a mixture B;
and S3, washing the mixture B with deionized water, drying and grinding to obtain the flame retardant.
Further, the dispersing agent is composed of polyethylene glycol and tetrahydrofuran according to a weight ratio of 1.5: 1.
The preparation method of the high-strength flame-retardant PP composite material comprises the following steps:
mixing the other raw materials except the glass fiber in proportion, adding the mixed raw materials into an extruder from a main feeding port, and adding the glass fiber into the extruder from a side feeding port; and performing melt extrusion granulation to obtain the high-strength flame-retardant PP composite material.
Further, the screw rotating speed of the double-screw extruder is 250r/min, the temperature of a first area of the double-screw extruder is 180 ℃, the temperature of a second area of the double-screw extruder is 190 ℃, the temperature of a third area of the double-screw extruder is 200 ℃, the temperature of a fourth area of the double-screw extruder is 205 ℃, the temperature of a fifth area of the double-screw extruder is 220 ℃, the temperature of a sixth area of the double-screw extruder is 225 ℃, the temperature of a seventh area of the double-screw extruder is 235 ℃, the temperature of; the side feeding port is arranged between the five areas and the six areas.
Example 2
A high-strength flame-retardant PP composite material comprises the following raw materials in parts by weight:
80 portions of PP
16 portions of polyethylene
Ethylene-vinyl acetate copolymer 10 parts
6 portions of inorganic filler
5 parts of glass fiber
4 portions of cross-linking agent
0.1 part of antioxidant
And 9 parts of a flame retardant.
Further, the inorganic filler is prepared from calcium carbonate, talcum powder and mica powder according to a weight ratio of 1: 1: 1. The antioxidant is prepared from antioxidant 1010 and antioxidant 1 in a weight ratio of 2: 1.
Further, the lubricant is composed of zinc stearate, calcium stearate and polyethylene wax according to the weight ratio of 2-3:0.5-1.5: 1. The cross-linking agent is prepared from dicumyl peroxide and di-tert-butyl peroxide in a weight ratio of 1: 1.
Further, the preparation method of the flame retardant comprises the following steps:
s1, uniformly mixing 30 parts of 2, 2-bis (4-hydroxyphenyl) propane, 10 parts of cyanuric chloride, 10 parts of melamine pyrophosphate, 14 parts of cage octa-poly (trimethylsiloxy) silsesquioxane and 25 parts of a dispersing agent by weight to obtain a mixture A;
s2, adding 11 parts of nano graphene oxide, 4 parts of nano titanium dioxide, 1 part of cerium molybdate and 5 parts of diisopropylamine into the mixture A, heating to 50 ℃, continuously stirring, and preserving heat for 120min to obtain a mixture B;
and S3, washing the mixture B with deionized water, drying and grinding to obtain the flame retardant.
Further, the dispersing agent is composed of polyethylene glycol and tetrahydrofuran according to a weight ratio of 0.5: 1.
The preparation method of the high-strength flame-retardant PP composite material comprises the following steps:
mixing the other raw materials except the glass fiber in proportion, adding the mixed raw materials into an extruder from a main feeding port, and adding the glass fiber into the extruder from a side feeding port; and performing melt extrusion granulation to obtain the high-strength flame-retardant PP composite material.
Further, the screw rotating speed of the double-screw extruder is 200r/min, the temperature of a first area of the double-screw extruder is 170 ℃, the temperature of a second area of the double-screw extruder is 180 ℃, the temperature of a third area of the double-screw extruder is 190 ℃, the temperature of a fourth area of the double-screw extruder is 190 ℃, the temperature of a fifth area of the double-screw extruder is 210 ℃, the temperature of a sixth area of the double-screw extruder is 220 ℃, the temperature of a seventh area of the double-screw extruder is 220 ℃, the temperature of; the side feeding port is arranged between the five areas and the six areas.
The rest of this embodiment is the same as embodiment 1, and is not described herein again.
Example 3
A high-strength flame-retardant PP composite material comprises the following raw materials in parts by weight:
110 portions of PP
24 portions of polyethylene
Ethylene-vinyl acetate copolymer 15 parts
Inorganic filler 12 parts
Glass fiber 10 parts
Crosslinking agent 7 parts
1.5 portions of antioxidant
15 parts of a flame retardant.
Further, the inorganic filler is prepared from calcium carbonate, talcum powder and mica powder according to a weight ratio of 2: 2: 1. The antioxidant is prepared from the following components in parts by weight of 1010 antioxidant and 1076: 1.
Further, the lubricant is composed of zinc stearate, calcium stearate and polyethylene wax according to the weight ratio of 3: 1.5: 1. The cross-linking agent is prepared from dicumyl peroxide and di-tert-butyl peroxide in a weight ratio of 2: 1.
Further, the preparation method of the flame retardant comprises the following steps:
s1, uniformly mixing 40 parts of 2, 2-bis (4-hydroxyphenyl) propane, 14 parts of cyanuric chloride, 15 parts of melamine pyrophosphate, 18 parts of cage octa-poly (trimethylsiloxy) silsesquioxane and 32 parts of a dispersing agent by weight to obtain a mixture A;
s2, adding 16 parts of nano graphene oxide, 6 parts of nano titanium dioxide, 3 parts of cerium molybdate and 9 parts of diisopropylamine into the mixture A, heating to 70 ℃, continuously stirring, and keeping the temperature for 60min to obtain a mixture B;
and S3, washing the mixture B with deionized water, drying and grinding to obtain the flame retardant.
Further, the dispersing agent is composed of polyethylene glycol and tetrahydrofuran according to a weight ratio of 2: 1.
The preparation method of the high-strength flame-retardant PP composite material comprises the following steps:
mixing the other raw materials except the glass fiber in proportion, adding the mixed raw materials into an extruder from a main feeding port, and adding the glass fiber into the extruder from a side feeding port; and performing melt extrusion granulation to obtain the high-strength flame-retardant PP composite material.
Further, the screw rotating speed of the double-screw extruder is 300r/min, the temperature of the first zone of the double-screw extruder is 190 ℃, the temperature of the second zone is 200 ℃, the temperature of the third zone is 210 ℃, the temperature of the fourth zone is 210 ℃, the temperature of the fifth zone is 230 ℃, the temperature of the sixth zone is 240 ℃, the temperature of the seventh zone is 240 ℃, the temperature of the eighth zone is 230 ℃, and the temperature of the ninth zone is 210 ℃; the side feeding port is arranged between the five areas and the six areas.
The rest of this embodiment is the same as embodiment 1, and is not described herein again.
Example 4
A high-strength flame-retardant PP composite material comprises the following raw materials in parts by weight:
90 portions of PP
18 portions of polyethylene
Ethylene-vinyl acetate copolymer 11 parts
Inorganic filler 7 parts
6 parts of glass fiber
6 portions of cross-linking agent
0.8 portion of antioxidant
And 11 parts of a flame retardant.
Further, the inorganic filler is prepared from calcium carbonate, talcum powder and mica powder according to a weight ratio of 1.5: 1.5: 1. The antioxidant is composed of an antioxidant 1010, an antioxidant 168 and an antioxidant 1076 according to the weight ratio of 2:1: 1.
Further, the lubricant is composed of zinc stearate, calcium stearate and polyethylene wax according to the weight ratio of 2.5: 1.5: 1. The cross-linking agent is prepared from dicumyl peroxide and di-tert-butyl peroxide in a weight ratio of 1.8: 1.
Further, the preparation method of the flame retardant comprises the following steps:
s1, uniformly mixing 32 parts of 2, 2-bis (4-hydroxyphenyl) propane, 11 parts of cyanuric chloride, 12 parts of melamine pyrophosphate, 14 parts of cage octa-poly (trimethylsiloxy) silsesquioxane and 27 parts of a dispersing agent by weight to obtain a mixture A;
s2, adding 13 parts of nano graphene oxide, 5 parts of nano titanium dioxide, 1.5 parts of cerium molybdate and 6 parts of diisopropylamine into the mixture A, heating to 55 ℃, continuously stirring, and keeping the temperature for 100min to obtain a mixture B;
and S3, washing the mixture B with deionized water, drying and grinding to obtain the flame retardant.
Further, the dispersing agent is composed of polyethylene glycol and tetrahydrofuran according to the weight ratio of 1.8: 1.
The preparation method of the high-strength flame-retardant PP composite material comprises the following steps:
mixing the other raw materials except the glass fiber in proportion, adding the mixed raw materials into an extruder from a main feeding port, and adding the glass fiber into the extruder from a side feeding port; and performing melt extrusion granulation to obtain the high-strength flame-retardant PP composite material.
Further, the screw rotating speed of the double-screw extruder is 240r/min, the temperature of the first zone of the double-screw extruder is 175 ℃, the temperature of the second zone is 185 ℃, the temperature of the third zone is 195 ℃, the temperature of the fourth zone is 195 ℃, the temperature of the fifth zone is 215 ℃, the temperature of the sixth zone is 225 ℃, the temperature of the seventh zone is 225 ℃, the temperature of the eighth zone is 220 ℃ and the temperature of the ninth zone is 195 ℃; the side feeding port is arranged between the five areas and the six areas.
The rest of this embodiment is the same as embodiment 1, and is not described herein again.
Example 5
A high-strength flame-retardant PP composite material comprises the following raw materials in parts by weight:
PP 100 parts
22 portions of polyethylene
Ethylene-vinyl acetate copolymer 14 parts
Inorganic filler 11 parts
9 portions of glass fiber
8 portions of compatilizer
6 portions of cross-linking agent
1.2 portions of antioxidant
And 13 parts of a flame retardant.
Further, the preparation method of the flame retardant comprises the following steps:
s1, uniformly mixing 38 parts of 2, 2-bis (4-hydroxyphenyl) propane, 13 parts of cyanuric chloride, 13 parts of melamine pyrophosphate, 17 parts of cage octa-poly (trimethylsiloxy) silsesquioxane and 31 parts of a dispersing agent by weight to obtain a mixture A;
s2, adding 15 parts of nano graphene oxide, 5 parts of nano titanium dioxide, 2.5 parts of cerium molybdate and 8 parts of diisopropylamine into the mixture A, heating to 65 ℃, continuously stirring, and keeping the temperature for 80min to obtain a mixture B;
and S3, washing the mixture B with deionized water, drying and grinding to obtain the flame retardant.
Further, the dispersing agent is composed of polyethylene glycol and tetrahydrofuran according to the weight ratio of 1: 1.
The rest of this embodiment is the same as embodiment 1, and is not described herein again.
Comparative example 1
This comparative example differs from example 1 in that: this comparative example did not add a flame retardant.
Comparative example 2
This comparative example differs from example 1 in that: this comparative example uses the flame retardant Fyrolflex Sol-DP instead of the flame retardant of example 1.
The high strength flame retardant PP composite materials of examples 1 to 5 and comparative examples 1 to 2 were subjected to a performance test: firstly, the high-strength flame-retardant PP composite materials of examples 1-5 and comparative examples 1-2 are tested for tensile strength, bending strength \ notch impact strength and limiting oxygen index, the tensile strength test is determined according to 1040.2-2006 GB/T, and the test speed is as follows: 50 mm/min; the bending strength is measured according to 9341-2008 GB/T; notched impact strength was measured at 1043.1-2008 GB/T, and specimen size: (80X 10X 4) mm, notch type: type A, test environment 23 ℃: the test temperature is 23 ℃; the test results are as follows;
item Tensile Strength (MPa) Flexural Strength (MPa) Impact strength of simply supported beam notch (kJ/m)2） Limiting oxygen index/%)
Example 1 32 45 37 32.3
Example 2 29 47 39 29.5
Example 3 28 44 34 31.6
Example 4 31 46 36 30.4
Example 5 29 43 36 30.1
Comparative example 1 26 39 32 23.2
Comparative example 2 19 32 27 28.3
As can be seen from the above table, the flame retardant property of the PP composite material obtained in example 1 is greatly improved, and the mechanical property is not affected, compared with comparative example 1; compared with comparative example 2, the mechanical property of the flame retardant is improved to different degrees on the premise of improving the flame retardance. Therefore, the high-strength flame-retardant PP composite material has good flame retardance and mechanical property.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.

Claims (9)

1. A high-strength flame-retardant PP composite material is characterized in that: the feed comprises the following raw materials in parts by weight:
80-110 parts of PP
16-24 parts of polyethylene
10-15 parts of ethylene-vinyl acetate copolymer
6-12 parts of inorganic filler
5-10 parts of glass fiber
4-7 parts of cross-linking agent
0.1 to 1.5 portions of antioxidant
9-15 parts of a flame retardant.
2. The high-strength flame-retardant PP composite material as claimed in claim 1, wherein: the inorganic filler is at least one of calcium carbonate, talcum powder and mica powder.
3. The high-strength flame-retardant PP composite material as claimed in claim 1, wherein: the antioxidant is at least one of antioxidant 1010, antioxidant 168 and antioxidant 1076.
4. The high-strength flame-retardant PP composite material as claimed in claim 1, wherein: the lubricant is at least one of zinc stearate, calcium stearate and polyethylene wax.
5. The high-strength flame-retardant PP composite material as claimed in claim 1, wherein: the cross-linking agent is at least one of dicumyl peroxide and di-tert-butyl peroxide.
6. The high-strength flame-retardant PP composite material as claimed in claim 1, wherein: the preparation method of the flame retardant comprises the following steps:
s1, uniformly mixing 30-40 parts of 2, 2-bis (4-hydroxyphenyl) propane, 10-14 parts of cyanuric chloride, 10-15 parts of melamine pyrophosphate, 14-18 parts of cage octa-poly (trimethylsiloxy) silsesquioxane and 25-32 parts of a dispersing agent by weight to obtain a mixture A;
s2, adding 11-16 parts of nano graphene oxide, 4-6 parts of nano titanium dioxide, 1-3 parts of cerium molybdate and 5-9 parts of diisopropylamine into the mixture A, heating to 50-70 ℃, continuously stirring, and keeping the temperature for 60-120min to obtain a mixture B;
and S3, washing the mixture B with deionized water, drying and grinding to obtain the flame retardant.
7. The high-strength flame-retardant PP composite material as claimed in claim 6, wherein: the dispersing agent consists of polyethylene glycol and tetrahydrofuran according to the weight ratio of 0.5-2: 1.
8. A method for preparing a high strength flame retardant PP composite material according to any of claims 1 to 7, characterized in that: the method comprises the following steps:
mixing the other raw materials except the glass fiber in proportion, adding the mixed raw materials into an extruder from a main feeding port, and adding the glass fiber into the extruder from a side feeding port; and performing melt extrusion granulation to obtain the high-strength flame-retardant PP composite material.
9. The preparation method of the high-strength flame-retardant PP composite material according to claim 8, wherein: the screw rotating speed of the double-screw extruder is 200-300r/min, the temperature of a first zone of the double-screw extruder is 170-190 ℃, the temperature of a second zone of the double-screw extruder is 180-200 ℃, the temperature of a third zone of the double-screw extruder is 190-210 ℃, the temperature of a fourth zone of the double-screw extruder is 190-210 ℃, the temperature of a fifth zone of the double-screw extruder is 210-230 ℃, the temperature of a sixth zone of the double-screw extruder is 220-240 ℃, the temperature of a seventh zone of the double-screw extruder is 220-240 ℃, the temperature of an eighth; the side feeding port is arranged between the five areas and the six areas.
CN202010099307.7A 2020-02-18 2020-02-18 High-strength flame-retardant PP composite material and preparation method thereof Pending CN111218062A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112080068A (en) * 2020-08-29 2020-12-15 盐城工学院 Flame-retardant composite material for new energy automobile interior and preparation method thereof
CN113929987A (en) * 2021-10-20 2022-01-14 甘肃诺尔达工贸有限公司 Preparation method of free radical type flame-retardant modified polypropylene
CN115160694A (en) * 2022-07-27 2022-10-11 长虹美菱股份有限公司 Water pan material for refrigerator and preparation method thereof
CN117964962A (en) * 2024-03-29 2024-05-03 瑞淙生物科技(山东)有限责任公司 High-temperature-resistant high-molecular profile and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102690464A (en) * 2012-05-04 2012-09-26 深圳市科聚新材料有限公司 High-gloss flame-retarded polypropylene composite and preparation method thereof
CN103601968A (en) * 2013-10-28 2014-02-26 广东聚石化学股份有限公司 Halogen-free flame-retardant polypropylene composite material used for making high-melt-strength sheets, and preparation method thereof
CN106279965A (en) * 2015-06-11 2017-01-04 合肥杰事杰新材料股份有限公司 A kind of physical blowing fills anti-flaming polypropylene material and preparation method thereof
CN107987320A (en) * 2017-12-29 2018-05-04 青岛合家兴工贸有限公司 A kind of aza synergistic expanding fire retardant of phosphorus and preparation method thereof
CN110079012A (en) * 2019-04-01 2019-08-02 四川大学 Compound synergistic halogen-free flame retardant polypropylene composite material of graphene/POSS and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102690464A (en) * 2012-05-04 2012-09-26 深圳市科聚新材料有限公司 High-gloss flame-retarded polypropylene composite and preparation method thereof
CN103601968A (en) * 2013-10-28 2014-02-26 广东聚石化学股份有限公司 Halogen-free flame-retardant polypropylene composite material used for making high-melt-strength sheets, and preparation method thereof
CN106279965A (en) * 2015-06-11 2017-01-04 合肥杰事杰新材料股份有限公司 A kind of physical blowing fills anti-flaming polypropylene material and preparation method thereof
CN107987320A (en) * 2017-12-29 2018-05-04 青岛合家兴工贸有限公司 A kind of aza synergistic expanding fire retardant of phosphorus and preparation method thereof
CN110079012A (en) * 2019-04-01 2019-08-02 四川大学 Compound synergistic halogen-free flame retardant polypropylene composite material of graphene/POSS and preparation method thereof

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
徐思婷等: "《塑料材料与助剂》", 31 July 2007, 天津大学出版社 *
李建军: "《塑料配方设计》", 30 September 2019, 中国轻工业出版社 *
橡胶工业原材料与装备简明手册编审委员会: "《橡胶工业原材料与装备简明手册 原材料与工艺耗材分册》", 31 January 2019, 北京理工大学出版社 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112080068A (en) * 2020-08-29 2020-12-15 盐城工学院 Flame-retardant composite material for new energy automobile interior and preparation method thereof
CN113929987A (en) * 2021-10-20 2022-01-14 甘肃诺尔达工贸有限公司 Preparation method of free radical type flame-retardant modified polypropylene
CN115160694A (en) * 2022-07-27 2022-10-11 长虹美菱股份有限公司 Water pan material for refrigerator and preparation method thereof
CN115160694B (en) * 2022-07-27 2024-02-02 长虹美菱股份有限公司 Water pan material for refrigerator and preparation method thereof
CN117964962A (en) * 2024-03-29 2024-05-03 瑞淙生物科技(山东)有限责任公司 High-temperature-resistant high-molecular profile and preparation method thereof

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