CN108841046A - A kind of phosphorus nitrogen systems fire retardant and preparation method - Google Patents
A kind of phosphorus nitrogen systems fire retardant and preparation method Download PDFInfo
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- 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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34922—Melamine; Derivatives thereof
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- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
- C08K5/34928—Salts
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
- C08K5/523—Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
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- 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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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K2003/026—Phosphorus
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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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
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- 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
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/322—Ammonium phosphate
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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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/326—Magnesium phosphate
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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 invention discloses a kind of phosphorus nitrogen systems fire retardant and preparation methods, include the following steps：Step 1, raw material are chosen；Step 2 is stirred；In step 3, heating mixing；Weight percent according to each raw material is respectively:Triazines nitrogen heterocyclic ring organic compound 80-99%, phosphate 1-20%, dispersing agent 0.1-1%, phosphorus system synergistic flame retardant 0.1-1%, the sum of said components mass percent are weighed for 100%；Weighed raw material is put into high-speed mixer, and is stirred 30 minutes；The present invention is specifically matched machine compound, phosphate, dispersing agent and phosphorus system synergistic flame retardant by selecting, and manufactured fire retardant has good anti-flammability；The invention is during the preparation process, by that machine compound, phosphate, dispersing agent and phosphorus system synergistic flame retardant will be put into progress heating stirring mixing in high-speed mixer according to different ratio, pass through cooling, it crushes, fire retardant made by filtering and molding, is effectively guaranteed the good flame resistance of fire retardant.
Description
Technical field
The present invention relates to polypropylene technology field, specially a kind of phosphorus nitrogen systems fire retardant and preparation method.
Background technique
Polypropylene is a kind of thermoplastic resin as prepared by propylene polymerization.It is divided into isotactic poly- third by methyl arrangement position
Alkene, random polypropylene (atactic polypropylene) and syndiotactic polypropylene (syndiotactic polypropylene)
Three kinds.
The same side that methyl is arranged in molecular backbone claims isotactic polypropylene, if the chaotic molecular backbone that is arranged in of methyl
Two sides claim random polypropylene, when the two sides that methyl is arranged alternately in molecular backbone claim syndiotactic polypropylene.Industrial products are with isotactic object
For main component.Polypropylene is also including the copolymer of propylene and a small amount of ethylene.Usually translucent colorless solid, odorless nothing
Poison.The highly crystallized due to compound with regular structure, therefore fusing point may be up to 167 DEG C.Heat-resisting, corrosion-resistant, product can be with moise-heat sterilization
Its outstanding advantages.Density is small, is most light general-purpose plastics.The disadvantage is that low-temperature impact resistance is poor, it is more easy to aging, but can pass through respectively
Modification is overcome.
The PP material of copolymer type has lower heat distortion temperature (100 DEG C), low transparency, low-luster, low rigidity, but
It is to have stronger impact strength, the impact strength of PP increases with the increase of ethylene contents.The vicat softening temperature of PP is
150℃。
But existing fire retardant performance is poor, therefore designing a kind of phosphorus nitrogen systems fire retardant and preparation method is to have very much
It is necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of phosphorus nitrogen systems fire retardant and preparation methods, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the present invention provides the following technical solutions：
A kind of phosphorus nitrogen systems fire retardant, raw material：Triazines nitrogen heterocyclic ring organic compound, phosphate, dispersing agent and phosphorus system
The weight percent of synergistic flame retardant, each raw material is respectively:Triazines nitrogen heterocyclic ring organic compound 80-99%, phosphate
1-20%, dispersing agent 0.1-1%, phosphorus system synergistic flame retardant 0.1-1%.
A kind of preparation method of phosphorus nitrogen systems fire retardant, includes the following steps：Step 1, raw material are chosen；Step 2, stirring
Mixing；In step 3, heating mixing；Step 4, it is cooling；In step 5, molding；
Wherein in above-mentioned step one, the weight percent according to each raw material is respectively:Triazines nitrogen-containing heterocycle is organic
Compound 80-99%, phosphate 1-20%, dispersing agent 0.1-1%, phosphorus system synergistic flame retardant 0.1-1%, said components quality hundred
The sum of score is weighed for 100%；
Wherein in above-mentioned step two, raw material weighed in step 1 is put into high-speed mixer, and stirs 30 points
Clock；
Wherein in above-mentioned step three, step 2 high speed blender is put into heating mantle and carries out heating polymerization,
It is heated to 30-100 DEG C, heating time is 2.5 hours；
Wherein in above-mentioned step four, the fire retardant crystal after heating polymerization in step 3 is taken out, places 10-15 DEG C
Environment in carry out cooling 1.5 hours；
Wherein in above-mentioned step five, the fire retardant crystal being prepared into step 4 is crushed, it will be smashed
Fire retardant is filtered, and filtered fire-retardant powder is carried out washing drying, and phosphorus nitrogen systems fire retardant can be obtained.
According to the above technical scheme, the weight percent of each raw material is respectively:Triazines nitrogen-containing heterocycle organic compound
Object 90%, phosphate 9%, dispersing agent 0.5%, phosphorus system synergistic flame retardant 0.5%.
According to the above technical scheme, the phosphate is at least one of magnesium phosphate, ammonium phosphate and triphenyl phosphate.
According to the above technical scheme, phosphorus system synergistic flame retardant is response type.
According to the above technical scheme, the triazines nitrogen heterocyclic ring organic compound is melamine and melamine cyanurea
At least one of hydrochlorate.
According to the above technical scheme, phosphorus system synergistic flame retardant is red phosphorus, at least one in magnesium hydroxide and aluminium oxide
Kind.
According to the above technical scheme, in the step 3, during Hybrid Heating, tail gas is passed through in water and is purified.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention, by selecting machine compound, phosphate, dividing
Powder and phosphorus system synergistic flame retardant specifically match, and manufactured fire retardant has good anti-flammability；
The invention during the preparation process, by will by machine compound, phosphate, dispersing agent and phosphorus system synergistic flame retardant according to
Different ratio is put into progress heating stirring mixing in high-speed mixer, by cooling, crushes, resistance made by filtering and molding
Agent is fired, the good flame resistance of fire retardant is effectively guaranteed.
Detailed description of the invention
Fig. 1 is preparation method flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution：A kind of phosphorus nitrogen systems fire retardant and preparation method：
Embodiment 1：
A kind of phosphorus nitrogen systems fire retardant, raw material：Triazines nitrogen heterocyclic ring organic compound, phosphate, dispersing agent and phosphorus system
The weight percent of synergistic flame retardant, each raw material is respectively:Triazines nitrogen heterocyclic ring organic compound 96%, phosphate
2.5%, dispersing agent 0.7%, phosphorus system synergistic flame retardant 0.8%.
A kind of preparation method of above-mentioned phosphorus nitrogen systems fire retardant, includes the following steps：Step 1, raw material are chosen；Step
Two, it is stirred；In step 3, heating mixing；Step 4, it is cooling；In step 5, molding；
Wherein in above-mentioned step one, the weight percent according to each raw material is respectively:Triazines nitrogen-containing heterocycle is organic
Compound 96%, phosphate 2.5%, dispersing agent 0.7%, phosphorus system synergistic flame retardant 0.8%；
Wherein in above-mentioned step two, raw material weighed in step 1 is put into high-speed mixer, and stirs 30 points
Clock；
Wherein in above-mentioned step three, step 2 high speed blender is put into heating mantle and carries out heating polymerization,
It is heated to 30-100 DEG C, heating time is 2.5 hours；
Wherein in above-mentioned step four, the fire retardant crystal after heating polymerization in step 3 is taken out, places 10-15 DEG C
Environment in carry out cooling 1.5 hours；
Wherein in above-mentioned step five, the fire retardant crystal being prepared into step 4 is crushed, it will be smashed
Fire retardant is filtered, and filtered fire-retardant powder is carried out washing drying, and phosphorus nitrogen systems fire retardant can be obtained.
Wherein, phosphate is at least one of magnesium phosphate, ammonium phosphate and triphenyl phosphate, is easy to use；The resistance of phosphorus system synergistic
Firing agent is response type, convenient for reaction；Triazines nitrogen heterocyclic ring organic compound is melamine and melamine cyanurate
At least one of, it is easy to use；Phosphorus system synergistic flame retardant is red phosphorus, and at least one of magnesium hydroxide and aluminium oxide are convenient for
It uses；In step 3, during Hybrid Heating, tail gas is passed through in water and is purified, purified air, avoid pollution environment.
Embodiment 2：
A kind of phosphorus nitrogen systems fire retardant, raw material：Triazines nitrogen heterocyclic ring organic compound, phosphate, dispersing agent and phosphorus system
The weight percent of synergistic flame retardant, each raw material is respectively:Triazines nitrogen heterocyclic ring organic compound 80%, phosphate
18%, dispersing agent 1%, phosphorus system synergistic flame retardant 1%.
A kind of preparation method of above-mentioned phosphorus nitrogen systems fire retardant, includes the following steps：Step 1, raw material are chosen；Step
Two, it is stirred；In step 3, heating mixing；Step 4, it is cooling；In step 5, molding；
Wherein in above-mentioned step one, the weight percent according to each raw material is respectively:Triazines nitrogen-containing heterocycle is organic
Compound 80%, phosphate 18%, dispersing agent 1%, phosphorus system synergistic flame retardant 1%；
Wherein in above-mentioned step two, raw material weighed in step 1 is put into high-speed mixer, and stirs 30 points
Clock；
Wherein in above-mentioned step three, step 2 high speed blender is put into heating mantle and carries out heating polymerization,
It is heated to 30-100 DEG C, heating time is 2.5 hours；
Wherein in above-mentioned step four, the fire retardant crystal after heating polymerization in step 3 is taken out, places 10-15 DEG C
Environment in carry out cooling 1.5 hours；
Wherein in above-mentioned step five, the fire retardant crystal being prepared into step 4 is crushed, it will be smashed
Fire retardant is filtered, and filtered fire-retardant powder is carried out washing drying, and phosphorus nitrogen systems fire retardant can be obtained.
Wherein, phosphate is at least one of magnesium phosphate, ammonium phosphate and triphenyl phosphate, is easy to use；The resistance of phosphorus system synergistic
Firing agent is response type, convenient for reaction；Triazines nitrogen heterocyclic ring organic compound is melamine and melamine cyanurate
At least one of, it is easy to use；Phosphorus system synergistic flame retardant is red phosphorus, and at least one of magnesium hydroxide and aluminium oxide are convenient for
It uses；In step 3, during Hybrid Heating, tail gas is passed through in water and is purified, purified air, avoid pollution environment.
Embodiment 3：
A kind of phosphorus nitrogen systems fire retardant, raw material：Triazines nitrogen heterocyclic ring organic compound, phosphate, dispersing agent and phosphorus system
The weight percent of synergistic flame retardant, each raw material is respectively:Triazines nitrogen heterocyclic ring organic compound 90%, phosphate 9%,
Dispersing agent 0.5%, phosphorus system synergistic flame retardant 0.5%.
A kind of preparation method of above-mentioned phosphorus nitrogen systems fire retardant, includes the following steps：Step 1, raw material are chosen；Step
Two, it is stirred；In step 3, heating mixing；Step 4, it is cooling；In step 5, molding；
Wherein in above-mentioned step one, the weight percent according to each raw material is respectively:Triazines nitrogen-containing heterocycle is organic
Compound 90%, phosphate 9%, dispersing agent 0.5%, phosphorus system synergistic flame retardant 0.5%；
Wherein in above-mentioned step two, raw material weighed in step 1 is put into high-speed mixer, and stirs 30 points
Clock；
Wherein in above-mentioned step three, step 2 high speed blender is put into heating mantle and carries out heating polymerization,
It is heated to 30-100 DEG C, heating time is 2.5 hours；
Wherein in above-mentioned step four, the fire retardant crystal after heating polymerization in step 3 is taken out, places 10-15 DEG C
Environment in carry out cooling 1.5 hours；
Wherein in above-mentioned step five, the fire retardant crystal being prepared into step 4 is crushed, it will be smashed
Fire retardant is filtered, and filtered fire-retardant powder is carried out washing drying, and phosphorus nitrogen systems fire retardant can be obtained.
Wherein, phosphate is at least one of magnesium phosphate, ammonium phosphate and triphenyl phosphate, is easy to use；The resistance of phosphorus system synergistic
Firing agent is response type, convenient for reaction；Triazines nitrogen heterocyclic ring organic compound is melamine and melamine cyanurate
At least one of, it is easy to use；Phosphorus system synergistic flame retardant is red phosphorus, and at least one of magnesium hydroxide and aluminium oxide are convenient for
It uses；In step 3, during Hybrid Heating, tail gas is passed through in water and is purified, purified air, avoid pollution environment.
Embodiment 4：
A kind of phosphorus nitrogen systems fire retardant, raw material：Triazines nitrogen heterocyclic ring organic compound, phosphate, dispersing agent and phosphorus system
The weight percent of synergistic flame retardant, each raw material is respectively:Triazines nitrogen heterocyclic ring organic compound 88%, phosphate
11%, dispersing agent 0.6%, phosphorus system synergistic flame retardant 0.4%.
A kind of preparation method of above-mentioned phosphorus nitrogen systems fire retardant, includes the following steps：Step 1, raw material are chosen；Step
Two, it is stirred；In step 3, heating mixing；Step 4, it is cooling；In step 5, molding；
Wherein in above-mentioned step one, the weight percent according to each raw material is respectively:Triazines nitrogen-containing heterocycle is organic
Compound 88%, phosphate 11%, dispersing agent 0.6%, phosphorus system synergistic flame retardant 0.4%；
Wherein in above-mentioned step two, raw material weighed in step 1 is put into high-speed mixer, and stirs 30 points
Clock；
Wherein in above-mentioned step three, step 2 high speed blender is put into heating mantle and carries out heating polymerization,
It is heated to 30-100 DEG C, heating time is 2.5 hours；
Wherein in above-mentioned step four, the fire retardant crystal after heating polymerization in step 3 is taken out, places 10-15 DEG C
Environment in carry out cooling 1.5 hours；
Wherein in above-mentioned step five, the fire retardant crystal being prepared into step 4 is crushed, it will be smashed
Fire retardant is filtered, and filtered fire-retardant powder is carried out washing drying, and phosphorus nitrogen systems fire retardant can be obtained.
Wherein, phosphate is at least one of magnesium phosphate, ammonium phosphate and triphenyl phosphate, is easy to use；The resistance of phosphorus system synergistic
Firing agent is response type, convenient for reaction；Triazines nitrogen heterocyclic ring organic compound is melamine and melamine cyanurate
At least one of, it is easy to use；Phosphorus system synergistic flame retardant is red phosphorus, and at least one of magnesium hydroxide and aluminium oxide are convenient for
It uses；In step 3, during Hybrid Heating, tail gas is passed through in water and is purified, purified air, avoid pollution environment.
Based on above-mentioned, the weight percent according to each raw material is respectively:Triazines nitrogen heterocyclic ring organic compound 80-
99%, phosphate 1-20%, dispersing agent 0.1-1%, phosphorus system synergistic flame retardant 0.1-1%, the sum of said components mass percent
It is weighed for 100%；Weighed raw material is put into high-speed mixer, and is stirred 30 minutes；High-speed mixer is put into
Heating polymerization is carried out in heating mantle, is heated to 30-100 DEG C, heating time is 2.5 hours；Fire retardant after heating polymerization is brilliant
Body takes out, and places and carries out cooling 1.5 hours in 10-15 DEG C of environment；The fire retardant crystal being prepared into is crushed, will be crushed
Fire retardant afterwards is filtered, and filtered fire-retardant powder is carried out washing drying, and phosphorus nitrogen systems fire retardant can be obtained.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
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 modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of phosphorus nitrogen systems fire retardant, it is characterised in that：Raw material：Triazines nitrogen heterocyclic ring organic compound, phosphate, dispersion
Agent and phosphorus system synergistic flame retardant, the weight percent of each raw material are respectively:Triazines nitrogen heterocyclic ring organic compound 80-
99%, phosphate 1-20%, dispersing agent 0.1-1%, phosphorus system synergistic flame retardant 0.1-1%.
2. a kind of preparation method of phosphorus nitrogen systems fire retardant, includes the following steps：Step 1, raw material are chosen；Step 2, stirring are mixed
It closes；In step 3, heating mixing；Step 4, it is cooling；In step 5, molding；It is characterized in that：
Wherein in above-mentioned step one, the weight percent according to each raw material is respectively:Triazines nitrogen-containing heterocycle organic compound
Object 80-99%, phosphate 1-20%, dispersing agent 0.1-1%, phosphorus system synergistic flame retardant 0.1-1%, said components mass percent
The sum of weighed for 100%；
Wherein in above-mentioned step two, raw material weighed in step 1 is put into high-speed mixer, and is stirred 30 minutes；
Wherein in above-mentioned step three, step 2 high speed blender is put into heating mantle and carries out heating polymerization, heated
To 30-100 DEG C, heating time is 2.5 hours；
Wherein in above-mentioned step four, the fire retardant crystal after heating polymerization in step 3 is taken out, 10-15 DEG C of ring is placed
It is carried out in border 1.5 hours cooling；
Wherein in above-mentioned step five, the fire retardant crystal being prepared into step 4 is crushed, it will be smashed fire-retardant
Agent is filtered, and filtered fire-retardant powder is carried out washing drying, and phosphorus nitrogen systems fire retardant can be obtained.
3. a kind of phosphorus nitrogen systems fire retardant according to claim 1, it is characterised in that：The weight percent of each raw material is distinguished
For:Triazines nitrogen heterocyclic ring organic compound 90%, phosphate 9%, dispersing agent 0.5%, phosphorus system synergistic flame retardant 0.5%.
4. a kind of phosphorus nitrogen systems fire retardant according to claim 1, it is characterised in that：The phosphate is magnesium phosphate, ammonium phosphate
With at least one of triphenyl phosphate.
5. a kind of phosphorus nitrogen systems fire retardant according to claim 1, it is characterised in that：Phosphorus system synergistic flame retardant is response type
's.
6. a kind of phosphorus nitrogen systems fire retardant according to claim 1, it is characterised in that：The triazines nitrogen-containing heterocycle organic compound
Object is at least one of melamine and melamine cyanurate.
7. a kind of phosphorus nitrogen systems fire retardant according to claim 1, it is characterised in that：Phosphorus system synergistic flame retardant is red phosphorus,
At least one of magnesium hydroxide and aluminium oxide.
8. a kind of preparation method of phosphorus nitrogen systems fire retardant according to claim 2, it is characterised in that：In the step 3, mix
It closes in heating process, tail gas is passed through in water and is purified.
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| CN102618026A (en) * | 2012-04-25 | 2012-08-01 | 中国科学院宁波材料技术与工程研究所 | Halogen-free and flame-retardant nylon master batch with high CTI (Comparative Tracking Index) value and preparation method thereof |
| CN103450503A (en) * | 2013-08-28 | 2013-12-18 | 瓮福（集团）有限责任公司 | Composite phosphorus-nitrogen flame retardant |
| CN105802013A (en) * | 2016-04-22 | 2016-07-27 | 东源顺亨塑胶阻燃材料厂 | Flame-retardant masterbatch, flame-retardant masterbatch based phosphorus-nitrogen intumescent flame-retardant material and preparation method thereof |
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Application publication date: 20181120 |