CN109535553A - A kind of flame-proof weather-resisting PP composite material and preparation method - Google Patents
A kind of flame-proof weather-resisting PP composite material and preparation method Download PDFInfo
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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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
Abstract
The present invention relates to a kind of flame-proof weather-resisting PP composite material and preparation methods, are made of the following components by weight: PP is 80 parts -100 parts；Composite flame-retardant agent is 20 parts -24 parts；Weatherable master batch is 10 parts -16 parts；Antioxidant is 0.1 part -0.5 part；Composite flame-retardant agent is the aluminium hydroxide of graphene coated.The application is evenly dispersed in the surface of graphene using aluminium hydroxide, form the preferable aluminium hydroxide of clad-graphene composite flame-retardant agent, when material combustion, aluminium hydroxide resolves into water and aluminium oxide, aluminium hydroxide decomposes the aluminium oxide generated and equably covers on the surface of graphene, promote to form it into fine and close structure, aluminium oxide and layer of charcoal are covered on the surface cooperative flame retardant of PP material, play the role of heat-insulated oxygen-impermeable, the flame retardant property of promotion PP material.
Description
Technical field
The invention belongs to technical field of polymer materials, a kind of flame-proof weather-resisting PP composite material and its preparation side are particularly related to
Method.
Background technique
Polypropylene (PP) is the engineering plastics of high comprehensive performance, and good stability of the dimension, insulating properties is good, oil resistant, molding
Processing performance is relatively good.Although the comprehensive performance of PP is very excellent, in some special application fields, to flame retardant property,
Weather resistance has very high requirement, and common PP is not able to satisfy this requirement, this just greatly limits the application model of PP composite material
It encloses.
Given this kind of flame retardant property and the excellent PP composite material of weather resistance is made in reason, the technical program innovation,
The deficiency of existing PP composite material is made up, this PP material not yet sees report so far, this is answered for extension PP composite material
With with very important realistic meaning.
Summary of the invention
The object of the present invention is to provide a kind of flame-proof weather-resisting PP composite material and preparation methods, multiple to solve existing common PP
Not the problem of flame retardant property and weather resistance of condensation material are not able to satisfy the application of some aspects.
The present invention is achieved by the following technical solutions:
A kind of flame-proof weather-resisting PP composite material, is made of the following components by weight:
The composite flame-retardant agent is the aluminium hydroxide of graphene coated.
The preparation method of the composite flame-retardant agent, comprising the following steps:
(1) a certain amount of six nitric hydrates aluminium, deionized water, ethyl alcohol are weighed to be added into three-necked flask, is reacted under room temperature
20-40min obtains solution A；
(2) a certain amount of sodium hydroxide, deionized water are weighed, is added into three-necked flask, reacts 40-60min under room temperature,
Obtain solution B；
(3) a certain amount of 9 ether of alkyl polyoxyethylene, graphene, solution A are weighed, is added into three-necked flask, it is anti-under room temperature
1-3h is answered, solution C is obtained；
(4) a certain amount of solution B, solution C are weighed, is entered into three-necked flask, 2-4h is reacted in water-bath at 60-80 DEG C, obtains
To solution D；
(5) solution D is filtered, obtains product E；
(6) dehydrated alcohol and deionized water washed product washed product E repeatedly are used, until its PH=7, drying and grinding, mistake
800 meshes both obtain composite flame-retardant agent.
The mass ratio of six nitric hydrate aluminium, deionized water, ethyl alcohol in step (1) is (40-60): (100-160): (60-
80)。
The mass ratio of sodium hydroxide, deionized water in step (2) is (60-80): (200-240).
The mass ratio of 9 ether of alkyl polyoxyethylene, graphene, solution A in step (3) is (1-3): (30-50): (140-
160)。
The mass ratio of solution B, solution C in step (4) is (30-50): (40-60).
The weatherable master batch the preparation method is as follows:
(1) a certain amount of PP, Nano-meter SiO_2 are weighed2, citric acid neodymium, titanate coupling agent, antioxidant；
(2) they high-speed mixer is put into mix, it is to be mixed to be uniformly put into extruding pelletization in double screw extruder, it dries
It is dry both to obtain weatherable master batch.
PP, Nano-meter SiO_2 in step (1)2, citric acid neodymium, titanate coupling agent, antioxidant mass ratio be (100-
120): (10-16): (1-3): (0.1-0.3): (0.2-0.4).
The antioxidant is three (2,4- di-t-butyl) phenyl-phosphites, four [β-(3,5- di-tert-butyl-hydroxy phenyl)
Propionic acid] pentaerythritol ester or 1,3,5- trimethyls -2,4, one of 6- (3,5- di-t-butyl -4- hydroxyphenylmethyl) benzene or several
The mixing of kind.
A kind of preparation method of the flame-proof weather-resisting PP composite material of any of the above-described, comprising the following steps:
(2) 80 parts -100 parts of PP, 20 parts of -24 parts of composite flame-retardant agents, 10 parts of -16 parts of weatherable master batches, 0.1 part -0.5 are weighed
Part antioxidant is mixed and stirred for uniformly, obtaining mixture；
(2) by mixture obtained in step (1) from extruder extruding pelletization to get to PP composite material.
The step (2) specifically: mixture obtained in step (1) is put into the hopper of double screw extruder and squeezed
It is granulated out to get PP composite material is arrived, wherein the double screw extruder includes six humidity provinces sequentially arranged, a Qu Wen
180~200 DEG C of degree, two 210~230 DEG C of area's temperature, three 210~230 DEG C of area's temperature, four 210~230 DEG C of area's temperature, five Qu Wen
210~230 DEG C of degree, six 210~230 DEG C of area's temperature, 210~230 DEG C of head temperature, 200~280r/min of screw speed.
The beneficial effects of the present invention are:
Aluminium hydroxide is evenly dispersed in the surface of graphene, and it is compound to form the preferable aluminium hydroxide-graphene of clad
Fire retardant, when material combustion, aluminium hydroxide resolves into water and aluminium oxide, and aluminium hydroxide decomposes the aluminium oxide generated and equably covers
Lid on the surface of graphene, promotees to form it into fine and close structure, and aluminium oxide and layer of charcoal are covered on the surface cooperative flame retardant of PP material, rise
To heat-insulated oxygen-impermeable effect, the flame retardant property of PP material is promoted.
The application has synthesized a kind of weatherable master batch, it can improve the weather resistance of PP composite material well, this has weight
The meaning wanted.
The fire-retardant performance of PP composite material and weather resistance of the application synthesis are excellent, and simple process has very big popularization
Value.
Specific embodiment
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is merely exemplary, only
It can be used to explanation and illustration technical solution of the present invention, and be not to be construed as the limitation to technical solution of the present invention.
The application provides a kind of flame-proof weather-resisting PP composite material, is made of the following components by weight:
Composite flame-retardant agent is the aluminium hydroxide of graphene coated.
The preparation method of composite flame-retardant agent, comprising the following steps:
(1) a certain amount of six nitric hydrates aluminium, deionized water, ethyl alcohol are weighed to be added into three-necked flask, is reacted under room temperature
20-40min obtains solution A；Six nitric hydrate aluminium, deionized water, ethyl alcohol mass ratio be (40-60): (100-160): (60-
80)。
(2) a certain amount of sodium hydroxide, deionized water are weighed, is added into three-necked flask, reacts 40-60min under room temperature,
Obtain solution B；Sodium hydroxide, deionized water mass ratio be (60-80): (200-240).
(3) a certain amount of 9 ether of alkyl polyoxyethylene, graphene, solution A are weighed, is added into three-necked flask, it is anti-under room temperature
1-3h is answered, solution C is obtained；9 ether of alkyl polyoxyethylene (NP-9), graphene, solution A mass ratio be (1-3): (30-50):
(140-160)。
(4) a certain amount of solution B, solution C are weighed, is entered into three-necked flask, 2-4h is reacted in water-bath at 60-80 DEG C, obtains
To solution D；Solution B, solution C mass ratio be (30-50): (40-60).
(5) solution D is filtered, obtains product E；
(6) dehydrated alcohol and deionized water washed product washed product E repeatedly are used, until its PH=7, drying and grinding, mistake
800 meshes both obtain composite flame-retardant agent.
Weatherable master batch the preparation method is as follows:
(1) a certain amount of PP, Nano-meter SiO_2 are weighed2, citric acid neodymium, titanate coupling agent, antioxidant；PP, Nano-meter SiO_22, lemon
Lemon acid neodymium, titanate coupling agent, antioxidant mass ratio be (100-120): (10-16): (1-3): (0.1-0.3): (0.2-
0.4).Titanate coupling agent is the AC-201 of the sincere chemical industry of Nanjing Olympic.
High-speed mixer revolving speed be 280~320r/min, double screw extruder include six humidity provinces sequentially arranged,
One 140~160 DEG C of area's temperature, two 200~220 DEG C of area's temperature, three 200~220 DEG C of area's temperature, four 200~220 DEG C of area's temperature,
Five 200~220 DEG C of area's temperature, six 200~220 DEG C of area's temperature, 200~220 DEG C of head temperature；180~260r/ of screw speed
min。
(2) they high-speed mixer is put into mix, it is to be mixed to be uniformly put into extruding pelletization in double screw extruder, it dries
It is dry both to obtain weatherable master batch.
Antioxidant is three (2,4- di-t-butyl) phenyl-phosphites (abbreviation Irganox168), the four [β-of BASF AG
(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (abbreviation Irganox1010) or 1,3,5- trimethyls -2,4,
The mixing of one or more of 6- (3,5- di-t-butyl -4- hydroxyphenylmethyl) benzene (abbreviation Irganox1330).
A kind of preparation method of the flame-proof weather-resisting PP composite material of any of the above-described, comprising the following steps:
(3) 80 parts -100 parts of PP, 20 parts of -24 parts of composite flame-retardant agents, 10 parts of -16 parts of weatherable master batches, 0.1 part -0.5 are weighed
Part antioxidant is mixed and stirred for uniformly, obtaining mixture；
(2) by mixture obtained in step (1) from extruder extruding pelletization to get to PP composite material.
Step (2) specifically: put into the hopper of double screw extruder to squeeze out mixture obtained in step (1) and make
Grain is to get arriving PP composite material, wherein and double screw extruder includes six humidity provinces sequentially arranged, area's temperature 180~
200 DEG C, two 210~230 DEG C of area's temperature, three 210~230 DEG C of area's temperature, four 210~230 DEG C of area's temperature, five area's temperature 210~
230 DEG C, six 210~230 DEG C of area's temperature, 210~230 DEG C of head temperature, 200~280r/min of screw speed.
Raw material used in embodiments herein is as follows:
PP (model Z30S), Maoming Petrochemical；Six nitric hydrate aluminium, Guangzhou Weng Jiang chemical reagent Co., Ltd；Deionized water,
Yancheng, Jiangsu Province Ming Jun Environmental Protection Technology Co., Ltd；Ethyl alcohol, Jinan century sensible Chemical Co., Ltd.；Sodium hydroxide, Cangzhou mosasaur
Chemical products Co., Ltd；9 ether of alkyl polyoxyethylene, Guangzhou Du Te Chemical Co., Ltd.；Graphene, Jinan ink, which wishes new material, to be had
Limit company；Nano-meter SiO_22, Jining high official position Chemical Co., Ltd.；Citric acid neodymium, Henan Jie Sen chemical products Co., Ltd；Titanate esters
Coupling agent (model AC-201), the sincere Chemical Co., Ltd. of Nanjing Olympic；Antioxidant (model Irganox168, Irganox1010,
Irganox1330), Switzerland's Ciba；Zinc stearate, Chinese reform material；Calcium stearate, Wuhan Wanrong science and technology；Potassium stearate,
Nation's promise chemical industry.
Test equipment used herein is as follows:
ZSK30 type double screw extruder, German W&P company；JL-1000 type tensile testing machine, the wide just experiment instrument in Guangzhou
The production of device company；HTL900-T-5B type injection (mo(u)lding) machine, the production of Hai Tai plastics machinery Co., Ltd；XCJ-500 type shock-testing
Machine, the production of Chengde testing machine factory；QT-1196 type tester for elongation, Dongguan City Gao Tai detecting instrument Co., Ltd；QD-GJS-
B12K type high-speed mixer, Beijing perseverance Order instrument and meter Co., Ltd.
Embodiment 1
(1) 80 parts of PP, 20 parts of composite flame-retardant agents, 10 parts of weatherable master batches, 0.1 part of Irganox168 is weighed to be mixed and stirred for
It is even, obtain mixture；
(2) by mixture extruding pelletization obtained in step (1) to get arrive PP composite material P1.
Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 180 DEG C of area's temperature, two 210 DEG C of area's temperature,
Three 210 DEG C of area's temperature, four 210 DEG C of area's temperature, five 210 DEG C of area's temperature, six 210 DEG C of area's temperature, 210 DEG C of head temperature, screw rod turns
Fast 200r/min.
Embodiment 2
(1) 100 parts of PP, 24 parts of composite flame-retardant agents, 16 parts of weatherable master batches, 0.1 part of Irganox168,0.2 part are weighed
Irganox1010,0.2 part of Irganox1330 are mixed and stirred for uniformly, obtaining mixture；
(2) by mixture extruding pelletization obtained in step (1) to get arrive PP composite material P2.
Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 200 DEG C of area's temperature, two 230 DEG C of area's temperature,
Three 230 DEG C of area's temperature, four 230 DEG C of area's temperature, five 230 DEG C of area's temperature, six 230 DEG C of area's temperature, 230 DEG C of head temperature, screw rod turns
Fast 280r/min.
Embodiment 3
(1) 90 parts of PP, 22 parts of composite flame-retardant agents, 13 parts of weatherable master batches, 0.1 part of Irganox168,0.2 part are weighed
Irganox1010 is mixed and stirred for uniformly, obtaining mixture；
(2) by mixture extruding pelletization obtained in step (1) to get arrive PP composite material P3.
Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 190 DEG C of area's temperature, two 220 DEG C of area's temperature,
Three 220 DEG C of area's temperature, four 220 DEG C of area's temperature, five 220 DEG C of area's temperature, six 220 DEG C of area's temperature, 220 DEG C of head temperature；Screw rod turns
Fast 240r/min.
Embodiment 4
(1) 85 parts of PP, 23 parts of composite flame-retardant agents, 12 parts of weatherable master batches, 0.1 part of Irganox1010,0.2 part are weighed
Irganox1330 is mixed and stirred for uniformly, obtaining mixture；
(2) by mixture extruding pelletization obtained in step (1) to get arrive PP composite material P4.
Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 185 DEG C of area's temperature, two 225 DEG C of area's temperature,
Three 225 DEG C of area's temperature, four 225 DEG C of area's temperature, five 225 DEG C of area's temperature, six 225 DEG C of area's temperature, 225 DEG C of head temperature；Screw rod turns
Fast 250r/min.
Embodiment 5
(1) 95 parts of PP, 21 parts of composite flame-retardant agents, 15 parts of weatherable master batches, 0.2 part of Irganox1010,0.2 part are weighed
Irganox1330 is mixed and stirred for uniformly, obtaining mixture；
(2) by mixture extruding pelletization obtained in step (1) to get arrive PP composite material P5.
Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 195 DEG C of area's temperature, two 225 DEG C of area's temperature,
Three 225 DEG C of area's temperature, four 225 DEG C of area's temperature, five 225 DEG C of area's temperature, six 225 DEG C of area's temperature, 225 DEG C of head temperature；Screw rod turns
Fast 255r/min.
Comparative example 1
(1) 80 parts of PP, 0.1 part of Irganox1010,0.2 part of Irganox168 is weighed to be mixed and stirred for uniformly, obtaining
Mixture；
(2) by mixture extruding pelletization obtained in step (1) to get arrive PP composite material D1.
Wherein each area's temperature of double screw extruder and screw speed are respectively as follows: 195 DEG C of area's temperature, two 215 DEG C of area's temperature,
Three 215 DEG C of area's temperature, four 215 DEG C of area's temperature, five 215 DEG C of area's temperature, six 215 DEG C of area's temperature, 215 DEG C of head temperature；Screw rod turns
Fast 255r/min.
Performance test:
Batten test, test data is made with injection molding machine in PP composite material prepared by above-described embodiment 1-5 and comparative example 1
It is as follows:
As can be seen from the above table, it can also be seen that the flame retardant property of embodiment 1-5, weather resistance will be better than pair from table
Ratio 1.This has very important significance for the application field of extension PP composite material.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And deformation, the scope of the present invention is by appended claims and its equivalent limits.
Claims (10)
1. a kind of flame-proof weather-resisting PP composite material, which is characterized in that be made of the following components by weight:
The composite flame-retardant agent is the aluminium hydroxide of graphene coated.
2. flame-proof weather-resisting PP composite material according to claim 1, which is characterized in that the preparation side of the composite flame-retardant agent
Method, comprising the following steps:
(1) a certain amount of six nitric hydrates aluminium, deionized water, ethyl alcohol are weighed to be added into three-necked flask, reacts 20- under room temperature
40min obtains solution A；
(2) a certain amount of sodium hydroxide, deionized water are weighed, is added into three-necked flask, is reacted 40-60min under room temperature, obtain
Solution B；
(3) a certain amount of 9 ether of alkyl polyoxyethylene, graphene, solution A are weighed, is added into three-necked flask, reacts 1- under room temperature
3h obtains solution C；
(4) a certain amount of solution B, solution C are weighed, is entered into three-necked flask, reacts 2-4h in water-bath at 60-80 DEG C, is obtained molten
Liquid D；
(5) solution D is filtered, obtains product E；
(6) dehydrated alcohol and deionized water washed product washed product E repeatedly are used, until its PH=7, drying and grinding cross 800 mesh
Sieve both obtains composite flame-retardant agent.
3. flame-proof weather-resisting PP composite material according to claim 2, which is characterized in that six nitric hydrates in step (1)
Aluminium, deionized water, ethyl alcohol mass ratio be (40-60): (100-160): (60-80).
4. flame-proof weather-resisting PP composite material according to claim 2, which is characterized in that sodium hydroxide in step (2) is gone
The mass ratio of ionized water is (60-80): (200-240).
5. flame-proof weather-resisting PP composite material according to claim 2, which is characterized in that the alkyl polyoxy second in step (3)
9 ether of alkene, graphene, solution A mass ratio be (1-3): (30-50): (140-160).
6. flame-proof weather-resisting PP composite material according to claim 2, which is characterized in that solution B, solution C in step (4)
Mass ratio be (30-50): (40-60).
7. flame-proof weather-resisting PP composite material according to claim 1, which is characterized in that the preparation method of the weatherable master batch
It is as follows:
(1) a certain amount of PP, nanometer S iO are weighed2, citric acid neodymium, titanate coupling agent, antioxidant；
(2) they high-speed mixer is put into mix, it is to be mixed to be uniformly put into extruding pelletization in double screw extruder, it dries both
Obtain weatherable master batch.
8. flame-proof weather-resisting PP composite material according to claim 7, which is characterized in that PP, Nano-meter SiO_2 in step (1)2、
Citric acid neodymium, titanate coupling agent, antioxidant mass ratio be (100-120): (10-16): (1-3): (0.1-0.3): (0.2-
0.4)。
9. flame-proof weather-resisting PP composite material according to claim 1, which is characterized in that the antioxidant is three (2,4- bis-
Tert-butyl) phenyl-phosphite, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters or 1,3,5- front threes
Base -2,4, the mixing of one or more of 6- (3,5- di-t-butyl -4- hydroxyphenylmethyl) benzene.
10. a kind of preparation method of the flame-proof weather-resisting PP composite material of any one of the claims 1 to 8, which is characterized in that
The following steps are included:
(1) weigh 80 parts -100 parts PP, 20 parts of -24 parts of composite flame-retardant agents, 10 parts of -16 parts of weatherable master batches, 0.1 part -0.5 part it is anti-
Oxygen agent is mixed and stirred for uniformly, obtaining mixture；
(2) by mixture obtained in step (1) from extruder extruding pelletization to get to PP composite material.
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| CN112300466A (en) * | 2019-07-29 | 2021-02-02 | 合肥杰事杰新材料股份有限公司 | Polyolefin flame-retardant master batch and preparation method and application thereof |
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