CN100587027C - Preparation method for buckling flame retardant containing phosphor-nitrogen macromolecule - Google Patents
Preparation method for buckling flame retardant containing phosphor-nitrogen macromolecule Download PDFInfo
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- CN100587027C CN100587027C CN200710164764A CN200710164764A CN100587027C CN 100587027 C CN100587027 C CN 100587027C CN 200710164764 A CN200710164764 A CN 200710164764A CN 200710164764 A CN200710164764 A CN 200710164764A CN 100587027 C CN100587027 C CN 100587027C
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Abstract
The invention relates to a macromolecular intumescent flame retardant with phosphorus and nitrogen, which is characterized in that: the chemical composition is poly (2, 6 and 7-trioxy-1-phosphorous dicyclic-[2, 2 and 2]-octane-1-anisyl) organic phosphate 4 and 4'-diaminodiphenylmethane; the preparation process is that: 2, 6 and 7-trioxy-1-phosphorous dicyclic-[2, 2 and 2]-octane-1-anisyl is put into the solvent of acetonitrile and dissolved after heating and stirring, and then diamine compound and catalyst are added into the solution, and a temperature reaction is processed under the protection of nitrogen; the solution is filtered when reaction is over to obtain the filter mass after being rinsed and dried. The macromolecular intumescent flame retardant with phosphorus and nitrogen has the advantages of being halogen-free and environment-friendly, big molecular weight, basically solving transplantation, separation, volatilization or other problems on the machineshaping of the flame retardant and the polymer substrate, simple preparation method and operation and higher productive rate of the product.
Description
Technical field
The present invention relates to a kind of preparation method of phosphorous and nitrogen macromolecule expansion type flame retardant.
Background technology
Expansion type flame retardant (IFR) is to be the fire retardant of main core element with phosphorus, nitrogen and charcoal, this based flame retardant be directed to specially polyolefinic fire-retardant and develop, and shown excellent flame-retardant, this based flame retardant has become a kind of novel environment friendly fire retardant of alternative halogen containing flame-retardant because flame retardant properties is good.Press what of flame retardant compositions, generally be divided into single component and polycomponent (mixed type) expansion type flame retardant.
The kind that relates to phosphorus-nitrogen expanding fire retardant has had a lot of patent reports, mainly contain pentaerythritol phosphate melamine salt single component class, also have ammonium polyphosphate/tetramethylolmethane/trimeric cyanamide three component expansion type flame retardants, but single component still is three component expansion type flame retardants several shortcomings are arranged all: synthetic in the main water of first single component salt, productive rate is lower, it two is that the molecular weight of one or more main components wherein is all little, with matrix add be easy to man-hour the migration or separate out, cause the flame retardant resistance loss of energy.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, a kind of preparation method of macromole expansion type flame retardant of phosphorous and nitrogen is provided, this preparation method is simple to operate, and the productive rate of products obtained therefrom is higher.The obtained flame-retardant agent is not halogen-containing, environmental friendliness; Molecular weight is big, can reach about 2000g/mol, can solve the migration that occurs basically in fire retardant and polymeric matrix machine-shaping, separate out or problem such as volatilization.
The preparation method of phosphorous and nitrogen macromolecule expansion type flame retardant of the present invention, described fire retardant chemical ingredients is: poly-(2,6,7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group) phosphoric acid ester 4,4 '-diaminodiphenylmethane, its preparation process is: get 2,6,7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester, with the acetonitrile is solvent, after the heated and stirred dissolving, add diamine compound and catalyzer again, temperature reaction under nitrogen protection; Reaction finishes to filter, and filter cake is through washing, dry getting final product; Wherein, 2,6, the mol ratio of 7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester and diamine compound is 1: 1～2; Reaction times is 1～5 hour; Described diamine compound is 4,4 '-diaminodiphenylmethane; Described catalyzer is a triethylamine, a kind of in the pyridine, itself and 2,6, the mol ratio of 7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester is 1～3: 1.
Phosphorous and nitrogen macromolecule expansion type flame retardant of the present invention, its structural formula is
2,6, the molecular structure of 7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester is as follows:
Described diamine compound is 4,4 '-diaminodiphenylmethane, and molecular structure is as follows:
Its price is relatively cheap and also better by the performance of its synthetic fire retardant.
Described washing is used twice of absolute ethanol washing again for deionized water wash twice.Described drying is in 80 ℃ vacuum drying oven dry 12 hours.
The fusing point of institute's synthetic compound is 255-260 ℃.Poly-(2,6,7-trioxy--1-phospha dicyclo-[2,2,2]-and octane-1-methoxyl group) phosphoric acid ester 4, its ultimate analysis theoretical value of 4 '-diaminodiphenylmethane is: C%:51.18%, H%:4.74%, N%:6.64%, O%:22.75%, P%:14.69%.Prove by results of elemental analyses: the phosphorous and nitrogen macromolecule expansion type flame retardant of preparation method's synthetic compound of the present invention and design is identical substantially.The proton magnetic of ultimate analysis institute synthetic compound has proved that also phosphorous the and nitrogen macromolecule expansion type flame retardant of the structure of institute's synthetic compound and design is identical substantially.
The fire retardant mechanism of this fire retardant mainly is that its burning of being heated in polypropylene matrix the time can generate the continuous compact carbon layer of one deck at polymer surfaces, thereby the effusion that has stoped degraded product is as keeping the incendiary raw material, and this charcoal layer also stops the feedback that enters to support burning and heat of extraneous oxygen to come the heated polymerizable thing simultaneously.
The present invention has the following advantages:
Preparation method of the present invention is simple, control easily, productive rate height.Prepared phosphorous and nitrogen macromolecule expansion type flame retardant, not halogen-containing, asepsis environment-protecting has a good application prospect; Carbon-collecting source, acid source, source of the gas be in one, the thermostability height, and being heated to 318 ℃ under condition of nitrogen gas just has 5% mass loss, becomes the charcoal height, and 600 ℃ of following carbon residue amounts are 50%, and good with the matrix consistency; Can solve the migration that in fire retardant and polymeric matrix machine-shaping, occurs, separate out or problem such as volatilization.
Description of drawings
The nuclear magnetic spectrogram of the phosphorous and nitrogen macromolecule expansion type flame retardant that Fig. 1 makes for preparation method of the present invention.
Embodiment
Embodiment 1
Under nitrogen protection; with 59.4g 2; 6; 7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester is dissolved in the 250ml there-necked flask that has the 100ml acetonitrile; heating while stirring; treat that its dissolving finishes, begin to drip 40g 4, the acetonitrile solution of 4 '-diaminodiphenylmethane; after dropwising; begin to drip 15ml catalyzer pyridine, 80 ℃ of down reactions, during constantly have buff powder to generate; reacted 5 hours; filter,, use twice of absolute ethanol washing again with deionized water wash twice.Drying is 12 hours in 80 ℃ vacuum drying oven, obtains the buff powder solid, yield 85%.Fusing point 255-258 ℃, ultimate analysis: C%:48.1%, H%:5.0%, N%:4.83%, O%:25.8%, P%:16.27%.Nuclear magnetic spectrogram is seen Fig. 1.The result proves: preparation method's synthetic compound of the present invention and design phosphorous, the nitrogen macromolecule expansion type flame retardant is identical substantially.
Fire-retardant application performance: above-mentioned synthetic fire retardant press the addition of massfraction 30% and polypropylene under 180 ℃ in Haake torque rheometer, 60 rev/mins of rotating speeds mixed 8 minutes, discharging, test is waited until in sample preparation on vulcanizing press.
Limiting oxygen index(LOI) (LOI) test: batten is of a size of 120 * 6 * 3.2mm, and testing parallel sample is 12, and the LOI value is respectively 27.7,28.0,28.2,28.3,27.9,27.8,28.2,28.3,28.4,28.1,28.2,28.0, and mean value is 28.1.Illustrate that this fire retardant has good flame retardant resistance.
Embodiment 2
Under nitrogen protection; with 29.7g 2; 6; 7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester is dissolved in the 250ml there-necked flask that has the 80ml acetonitrile; heating while stirring; treat that its dissolving finishes, begin to drip 20g 4, the acetonitrile solution of 4 '-diaminodiphenylmethane; after dropwising; begin to drip 10ml catalyzer pyridine, 80 ℃ of down reactions, during constantly have buff powder to generate; react after 2 hours; filter, filter cake is used twice of absolute ethanol washing again with deionized water wash twice.Drying is 12 hours in 80 ℃ vacuum drying oven, obtains the buff powder solid, yield 75%.Fusing point 255-257 ℃, ultimate analysis: C%:46.2%, H%:4.8%, N%:5.85%, O%:25.9%, P%:17.25%.
The foregoing description is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (3)
1, a kind of preparation method of phosphorous and nitrogen macromolecule expansion type flame retardant, described fire retardant chemical ingredients is: poly-(2,6,7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group) phosphoric acid ester 4,4 '-diaminodiphenylmethane is characterized in that preparation process is: get 2,6,7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester, with the acetonitrile is solvent, after the heated and stirred dissolving, add diamine compound and catalyzer again, temperature reaction under nitrogen protection; Reaction finishes to filter, and filter cake is through washing, dry getting final product; Wherein, 2,6, the mol ratio of 7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester and diamine compound is 1: 1～2; Reaction times is 1～5 hour; Described diamine compound is 4,4 '-diaminodiphenylmethane; Described catalyzer is a triethylamine, a kind of in the pyridine, itself and 2,6, the mol ratio of 7-trioxy--1-phospha dicyclo-[2,2,2]-octane-1-methoxyl group dichloro phosphoric acid ester is 1～3: 1.
2, the preparation method of phosphorous and nitrogen macromolecule expansion type flame retardant according to claim 1 is characterized in that described washing for deionized water wash twice, uses twice of absolute ethanol washing again.
3, the preparation method of phosphorous and nitrogen macromolecule expansion type flame retardant according to claim 1 is characterized in that described drying is in 80 ℃ vacuum drying oven dry 12 hours.
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| CN200710164764A CN100587027C (en) | 2007-12-13 | 2007-12-13 | Preparation method for buckling flame retardant containing phosphor-nitrogen macromolecule |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838538B (en) * | 2009-07-17 | 2012-07-04 | 大连理工大学 | Poly-phosphate flame retardant containing DOPO side-chain structure and preparation method thereof |
| CN101914208B (en) * | 2010-08-19 | 2012-07-25 | 中国科学技术大学 | Phosphorus-containing and nitrogen-containing expansion type flame-retardant polymer and preparation method thereof |
| WO2012071732A1 (en) | 2010-12-02 | 2012-06-07 | Dow Global Technologies Llc | Intumescent, halogen-free, silicon-phosphorus-nitrogen based polymeric flame retardant |
| CN102702575B (en) * | 2012-06-07 | 2013-07-24 | 北京化工大学 | Unimolecular phosphorus-silicon-nitrogen intumescent flame retardant and preparation method thereof |
| CN102757563B (en) * | 2012-07-24 | 2014-06-11 | 成都硕屋科技有限公司 | Intumescent polymer phosphorus nitrogen halogen-free flame retardant and preparation method thereof |
| CN102827369A (en) * | 2012-08-17 | 2012-12-19 | 沈阳化工大学 | Synthetic method of phosphorus-nitrogen intumescent flame retardant |
| CN103788378A (en) * | 2014-01-25 | 2014-05-14 | 北京理工大学 | Polyphosphamide fire retardant with bicyclic phosphate structure and preparation method thereof |
| CN105237810B (en) * | 2015-11-16 | 2018-02-27 | 北京工商大学 | A kind of core shell structure phosphorus nitrogen system's nano-meter flame retardantses and preparation method |
| CN107417912B (en) * | 2017-08-07 | 2020-02-14 | 顺德职业技术学院 | Phosphorus-nitrogen-silicon intumescent flame retardant containing triazine ring and cage structure and synthesis method thereof |
| CN108728925A (en) * | 2018-06-29 | 2018-11-02 | 南通文凯化纤有限公司 | A kind of preparation method of halogen-free flameproof nylon fibre |
| CN109354710A (en) * | 2018-10-19 | 2019-02-19 | 上海微巨实业有限公司 | A kind of phosphorous and nitrogen macromolecule expansion type flame retardant and its synthetic method |
| CN109929117B (en) * | 2019-01-15 | 2021-04-30 | 浙江大学宁波理工学院 | Phosphorus-nitrogen rigid skeleton porous flame retardant and preparation method and application thereof |
| CN116675924B (en) * | 2023-06-25 | 2024-03-19 | 广东安拓普聚合物科技股份有限公司 | Cold-resistant flame-retardant composite elastomer and preparation method thereof |
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2007
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Non-Patent Citations (4)
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| Effect of a novel phosphorousenitrogen containingintumescent flame retardant on the fire retardancy and thethermal behaviour of poly(butylene terephthalate). Feng Gao 等.Polymer Degradation and Stability,Vol.91 No.6. 2006 |
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