CN107540896A - Preparation method of easily-processed flame-retardant nitrile rubber - Google Patents

Preparation method of easily-processed flame-retardant nitrile rubber Download PDF

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CN107540896A
CN107540896A CN201610474925.9A CN201610474925A CN107540896A CN 107540896 A CN107540896 A CN 107540896A CN 201610474925 A CN201610474925 A CN 201610474925A CN 107540896 A CN107540896 A CN 107540896A
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rubber
nitrile rubber
preparation
flame
flame retardant
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CN107540896B (en
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艾纯金
由月
康安福
张华强
曹耀武
高杜娟
孟令坤
龚光碧
赵旭涛
梁滔
李树毅
陈建刚
李晶
郑聚成
李昌伟
刘鹏
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Petrochina Co Ltd
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Abstract

The invention provides a method for easily processing flame-retardant nitrile rubber, which comprises the steps of firstly dissolving nitrile rubber in a solvent to prepare a solution, adding an olefin metathesis catalyst and a rubber flame retardant, and removing a glue solution after reaction through the solvent to obtain a flame-retardant plasticizer; dispersing the plasticizer into water under the action of an emulsifier to form emulsion, mixing the emulsion with butyronitrile latex, and then coagulating, washing and drying to obtain the flame-retardant nitrile rubber product easy to process. The plasticizer product can reduce Mooney 0.7 unit/part of base rubber and improve oxygen index by 0.2 percent/part.

Description

The preparation method of easy processing flame retardant type nitrile rubber
Technical field
The present invention relates to a kind of preparation method of nitrile rubber, specifically a kind of nitrile rubber of the flame retardant type of easy processing Preparation method.
Background technology
The flame resistant method of rubber materials mainly have additional fire retardant and with two methods of fire retardant blend rubber.Additional fire retardant There are inorganic combustion inhibitor and organic fire-retardant, inorganic combustion inhibitor, which generally has cooling and iris action, common kind, aluminium hydroxide, hydrogen Magnesia, boron system thing and molybdenum system thing etc.;For organic fire-retardant then based on brominated, chlorine or phosphorous organic compound, bromine class is fire-retardant Agent can discharge hydrogen bromide in burning, serve as a barrier against oxygen.Exist in intelligence etc.《Flame retardant rubber is simply analysed》(world's rubber work Industry, the phase page 39 of volume 31 the 4th) propose, 15 parts of Sb are added in SBR2O3With 30 parts of chlorinated paraffins or 5 parts of Sb2O3, 20 parts of chlorine Fossil waxes and 25 parts of Al (OH)3, the preferable sizing material of anti-flammability can be obtained.Li Ang etc. exists《Rubber flame-retarded and its fire retardant》It is (extraordinary Rubber, the phase page 25 of volume 23 the 3rd) in propose, by brominated phosphate, aromatic bromide, Sb2O3With 4 kinds of resistances of ammonium chloride Combustion agent is used in combination, and is added in SBR, can be obtained the good sizing material of flame retardant effect.With 5~10 parts of dialkyl phenyl organic phosphates, 10 ~15 parts of Sb2O3With the flame retardant agent of 3~10 parts of iodine, it is added in SBR, the good sizing material of flame retardant effect can be obtained.Fire retardant rubber Glue is mainly the glue kind that some contain halogen, such as neoprene, polyvinyl chloride, epichlorohydrin rubber, chlorosulfonated polyethylene.
Inorganic combustion inhibitor has the shortcomings that dosage is big, and organic fire-retardant expense is again high, even if not considering these factors, additional resistance Combustion agent is not easy to realize in the production process of rubber, and inorganic particle than more serious, will realize its mixing with rubber from reuniting Higher energy is needed, generally requires and prolonged kneading repeatedly is carried out in mill or banbury and is kneaded.Mill is close Refine in process, be typically necessary and add a certain amount of plasticizer.Typically plant the low molecule that can make sizing material that there is certain flexibility Material, they can increase the plasticity of sizing material, mobility, adherence, in order to the technological operation such as die mould and shaping.And help Disperse and reduce melting temperature in powdered compounding ingredient, improve the machinability of rubber.
For nitrile rubber because the polarity of its itrile group acts on, oil resistivity is preferable, is usually used in the neck such as sebific duct, adhesive tape, encapsulant Domain, most commonly used petroleum plasticizer in rubber processing, mainly including aromatic naphtha, paraffin oil, naphthenic oil, heavy oil, paraffin, all Intellectual circle, pitch, Petropols etc., do not apply to and nitrile rubber process systems.Nitrile rubber typically using phthalic acid two- The Esters such as 2- ethylhexyls make plasticizer.A kind of dibasic acid ester plasticizer of CN200310108748.5 and its manufacture method, It is characterized in that it by adipic acid and ether alcohol under the conditions of 115~125 DEG C and 84~97KPa vacuum decompressions, through esterification Into.This plasticizer has that compatibility is good, volatilization loss is small, is not easy to be extracted the feature washed away, for improving polymeric material Low-temperature flexibility have a significant effect, and the not performance of expendable material in itself.Especially suitable for as nitrile rubber, propylene Acid esters rubber, epichlorohydrin rubber etc polar rubber, and can also be used for vinylite, celluosic resin etc.. The polyurethane prepolymer of CN97181179.2 low-monomer-contents, the polyurethane prepolymer of the low-monomer-content containing free NCO group Thing, prepared from the diisocyanate of polyhydroxy-alcohol and differential responses activity, it is characterized in that the diisocyanate that relative response is slower NCO group and rapid reaction diisocyanate NCO group ratio.Prepolymer is reacted by two benches to be prepared.This hair Bright prepolymer is applied to adhered plastics product, metal and paper, especially membrane material.It is mostly this kind of plasticizer of patent report Ester plasticizer, this kind of plasticizer are preferable to the compatibility of nitrile rubber, there is the effect preferably softened, but do not have flame retardant effect, And easily separated out during product use.
The content of the invention
It is an object of the present invention to provide a kind of preparation method of easy processing flame retardant type nitrile rubber, will specifically have fire-retardant work( The plasticizer of energy is added to the rubber product for the flame retardant type that easy processing is prepared in NBR latex by liquid phase calendering process.
The preparation method of the nitrile rubber of described easy processing flame retardant type, is concretely comprised the following steps:
1) flame retardant type plasticizer is prepared first, and nitrile rubber is dissolved in into preparation 0.1%w-20%w in solvent is preferably 1%w~15%w solution, in terms of 100 mass parts rubber, add the olefin metathesis of 0.5-1.5 parts, preferably 0.8-1.2 parts Rubber flame-retarded dose of catalyst and 10-60 parts, preferably 15-35 parts, at 15-50 DEG C, preferably 20-25 DEG C isolation air and Water, 0.5-5 hours are reacted, preferably 1-2 hours, reacted glue is deviate from through solvent, and it is 200-8000 scopes to obtain Mn Flame retardant type plasticizer product;
2) obtained flame retardant type plasticizer product is added and mixed with emulsifying agent, water, plasticising agent emulsion is made in stirring;
3) latex and flame retardant type plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:(1~ 50), preferably 100:(10~40), carry out mixing and be made into mixing latex, in the case where reaction temperature is 10 DEG C~80 DEG C, addition 1~ 25 mass parts flocculating agents condense, scrubbed, centrifugal dehydration, drying, and easy processing flame retardant type nitrile rubber is made.
Easy processing flame retardant type nitrile rubber prepared by the present invention, after tested, 0.7 unit of basic glue Mooney/part is reduced, oxygen refers to Number improves 0.2%/part.
Solvent of the present invention is the solvent that can dissolve nitrile rubber that alkene is free of in structure;Selected from chloroform, chlorobenzene, Acetone, butanone etc..
Rubber flame-retarded dose of the present invention for the organic chloride monomer of the substituent of unsaturation containing alkene, its structural formula is: RX;Wherein:R- contains the unsaturated olefin aliphatic segment of 2~18 carbon, can be vinyl, acrylic, isopropenyl, Isopentene group, 3- pentenyls, 6- octenyls, tetramethyl-ethylene base, 1- heptenyls, methacryloxypropyl, metering system Acyloxy, preferred vinyl;X is F, Cl, Br or I, preferably Br;
R in RX preferably comprises nitrile group, is easy to dissolve in polar solvent, improves the compatibility with nitrile rubber, Intensified response activity;
Rubber flame-retarded dose of the present invention can be vinyl chloride, propylene dichloride nitrile, bromination acrylonitrile, bromine ethene, dichloro Ethene, dibromoethylene and its isomer etc.;
Olefin metathesis catalyst of the present invention is a kind of Ru carbene complex catalyst, can be that dichloro is (o- Isopropoxy benzylidene) (tricyclohexyl phosphine) conjunction ruthenium (II)Dichloro [o- isopropoxy benzene methylene Base] [double (2,4,6- the trimethylphenyls) -2- imidazolines subunits of 1,3-] conjunction rutheniumDeng with identity function Grubbs catalyst series or other there is the metal carbene catalyst of olefin metathesis function, preferablyOr
The present invention does not do particular determination to the species and dosage of used emulsifying agent and flocculating agent, and use is commonly used in the art Auxiliary agent and dosage.Emulsifying agent can be the anion such as saturated or unsaturated fatty acid soaps, RA rosin acid as mentioned Type emulsifying agent;Its dosage can be that 0.1~20 part, preferably 0.5~10 part is added in 100 parts of flame retardant type plasticizer products.
The present invention does not have particular/special requirement to the addition of described plasticising agent emulsion configuration process reclaimed water yet, as long as can make Material forms emulsion state, and the addition of water is preferably 50~500 parts of water of addition in 100 parts of flame retardant type plasticizer products.
The present invention is not particularly limited to the temperature of described plasticising agent emulsion configuration process, as long as under agitation being capable of shape It can be preferably 10-80 DEG C into emulsion, such as temperature.
Flocculating agent of the present invention can be CaCl2、MgSO4、Mg Cl2、Al2SO4、FeCl3、CuCl2、Ca(HSO4)2 Deng soluble metal salt and its mixture.Its dosage is preferably 1~25 mass parts flocculating agent of addition in 100 parts of NBR latexes, Preferably 5~15 parts.
" part " being not specifically noted in the present invention each means mass parts.
The technical principle of foundation of the present invention is:
Formula (1) n > m
As shown in above-mentioned chemical equation (1), nitrile rubber is under olefin metathesis catalyst effect in the present invention Molecular weight is reduced, and halogen flame retardant group is introduced in side base;The introducing accelerated degradation of unimolecule alkene is anti-in course of reaction Should, functional group can be incorporated into side base and end group;If being not added with unimolecule alkene, metathesis reaction process is relatively slowly and between side base The side reaction such as crosslinking aggravation;It is very fierce oxidation reaction that rubber burns under aerobic conditions, and chain chemical reaction, Active HO- free free radicals are generated during burning, hydrocarbon and water are generated when HO- free radicals meet with rubber molecule. Under aerobic conditions, hydrocarbon can continue to decompose and generation HO- free radicals, so as to form chain reaction, continues burning Go down.Prevent rubber combustion or extinguish it that oxygen or reduction HO- number of free radical must be blocked.Flame retardant type plasticizer by Thermal decomposition discharges halogen gas and hydrogen halides, and halogen can play a part of certain blocking oxygen;Halogenation Hydrogen Energy is free with HO- Base reaction generation water and halide ion, halide ion can generate hydrogen halides with hydrocarbon reaction, and hydrogen halides can further disappear Go out HO- free radicals, so as to reduce HO- number of free radical, burning velocity is slowed down until extinguishing.Simultaneously it is emphasized that should Plasticizer is to be generated after nitrile rubber is degraded, and has identical composition with rubber base-material, is played during rubber processing soft Change acts on, in later stage vulcanization process with base-material vulcanization crosslinking.
Embodiment
Material auxiliary agent needed for present invention specific implementation is as described below:
(1) nitrile rubber NBR3305, NBR2907, technical grade, Lanzhou Petrochemical;
(2) vinyl chloride, propylene dichloride nitrile, bromination acrylonitrile, vinylidene chloride, bromine ethene, trans- 1,2- dibromoethylenes, SILVER REAGENT, lark prestige Science and Technology Ltd.;
(3) olefin metathesis catalyst:WithRuthenium carbone catalyst, 500mg/ bottles, Purity >=98%w, lark prestige Science and Technology Ltd.;
(4) chloroform, chlorobenzene, acetone, butanone, SILVER REAGENT, lark prestige Science and Technology Ltd.;
(5) sodium soap, sodium abietate, aliphatic acid potassium, potassium rosinate, technical grade, Lanzhou Petrochemical;
(6)CaCl2、MgSO4、MgCl2、Al2(SO4)3, technical grade, Lanzhou Petrochemical;
Plasticizer is blended with nitrile rubber on a mill, tests crude rubber Mooney viscosity and oxygen index (OI);Rubber Mooney glues Degree is tested according to GB/T 1232.1-2000, and rubber plastizing agent molecular weight is tested using GPC.Oxygen index (OI) is according to GB 10707-89 Test, oxygen index (OI) is high to represent that material is nonflammable, and oxygen index (OI) is low to represent that material easily burns, and oxygen index (OI) < 22 belongs to easy fuel wood Material, oxygen index (OI) belong to combustible material between 22-27, and oxygen index (OI) > 27 belongs to nonflammable material.
" part " as described below is mass parts;Described " % " is mass percent, do not make specified otherwise according to Rubber butt quality is 100 calculating.
Embodiment 1:
Nitrile rubber NBR3305 is dissolved in the solution of preparation 0.15% in chloroform solvent, in terms of 100 mass parts rubber, Add 1.3 parts of olefin metathesis catalystWith 11.9 parts of rubber flame-retarded dose of propylene dichloride nitriles, 15.5 DEG C isolation air and water, reacts 0.53 hour, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer that Mn is 5500 Product;
Obtained flame retardant type plasticizer product 100g and 0.15g emulsifying agents sodium soap, 55g desalted waters are added and emulsified Device, it is 75 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:10, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 78 DEG C, adds 20 mass parts flocculating agent CaCl2Cohesion, scrubbed, centrifugal dehydration, drying, Easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 45 by 55, and oxygen index (OI) brings up to 25.9% by 19.7%.
Comparative example 1:
Compared with Example 1, other conditions are identical, and difference is to be not added with fire retardant, are specially:By nitrile rubber NBR3305 is dissolved in the solution of preparation 0.15% in chloroform solvent, in terms of 100 mass parts rubber, adds 1.3 parts of alkene subdivision Solve catalystCompletely cut off air and water at 15.5 DEG C, react 0.53 hour, reacted glue is through solvent Abjection, obtain the flame retardant type plasticizer product that Mn is 10800;
Obtained flame retardant type plasticizer product 100g and 0.15g emulsifying agents sodium soap, 55g desalted waters are added and emulsified Device, it is 75 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:10, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 78 DEG C, adds 20 mass parts flocculating agent CaCl2Cohesion, scrubbed, centrifugal dehydration, drying, Easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 53 by 55, oxygen index (OI) 19.7%, does not improve.
Embodiment 2:
Nitrile rubber NBR3305 is dissolved in the solution of preparation 10% in acetone solvent, in terms of 100 mass parts rubber, added Enter 0.98 part of olefin metathesis catalystWith 48 parts of rubber flame-retarded dose of vinylidene chlorides, 48.9 DEG C isolation air and water, reacts 4.5 hours, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer that Mn is 3200 Product;
Obtained flame retardant type plasticizer product 100g and 19g emulsifying agents sodium soap, 490g desalted waters are added into emulsifier, It is 50 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:30, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 55 DEG C, adds 20 mass parts flocculating agent MgSO4Cohesion, scrubbed, centrifugal dehydration, drying, Easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 32 by 55, and oxygen index (OI) brings up to 27.2% by 19.7%.
Comparative example 2:
Compared with Example 2, other conditions are identical, and difference is to be not added with olefin metathesis catalyst, are specially:Will Nitrile rubber NBR3305 is dissolved in the solution that 10%w is prepared in acetone solvent, in terms of 100 mass parts rubber, adds 48 parts of rubber Fire retardant vinylidene chloride, completely cut off air and water at 48.9 DEG C, react 4.5 hours, reacted glue is deviate from through solvent, obtains To the flame retardant type plasticizer product that Mn is 175000;
Obtained flame retardant type plasticizer product 100g and 19g emulsifying agents sodium soap, 490g desalted waters are added into emulsifier, It is 50 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:30, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 55 DEG C, adds 20 mass parts flocculating agent MgSO4Cohesion, scrubbed, centrifugal dehydration, drying, Easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity 55, do not reduce, oxygen index (OI) brings up to 20.4% by 19.7%, has when condensing, drying The white cigarette that 1,1- dichloroethylene decomposes.
Embodiment 3:
Nitrile rubber NBR2907 is dissolved in the solution of preparation 2.51% in chlorobenzene solvent, in terms of 100 mass parts rubber, Add 1.41 parts of olefin metathesis catalystIt is empty in 25.5 DEG C of isolations with 25.2 parts of rubber flame-retarded dose of bromine ethene Gas and water, react 2.55 hours, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer product that Mn is 520;
Obtained flame retardant type plasticizer product 100g and 10g emulsifying agents sodium abietate, 250g desalted waters are added into emulsifier, It is 40 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:25, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 55 DEG C, adds 20 mass parts flocculating agent MgSO4Cohesion, scrubbed, centrifugal dehydration, drying, Easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 55 by 75, and oxygen index (OI) brings up to 25.8% by 19.7%.
Comparative example 3:
Compared with Example 3, other conditions are identical, and difference is to make using di-2-ethylhexyl phthalate For plasticizer, it is specially:Plasticizer 100g and 10g sodium abietates emulsifying agent, 250g desalted waters are added into emulsifier, control temperature Spend for 40 DEG C, stir, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, is 100 according to butt proportioning:25, which carry out mixing, is made into epoxy glue Breast, in the case where reaction temperature is 55 DEG C, add 20 mass parts flocculating agent MgSO4Cohesion, scrubbed, centrifugal dehydration, drying, it is made easy Process flame retardant type nitrile rubber.
After tested, Mooney viscosity is reduced to 53 by 75, and oxygen index (OI) drops to 16.8% by 19.7%, more inflammable.
Embodiment 4:
Nitrile rubber NBR2907 is dissolved in the solution of preparation 4.5% in butanone solvent, in terms of 100 mass parts rubber, added Enter 0.59 part of olefin metathesis catalystWith 13 parts of rubber flame-retarded dose of bromine ethene, 15 DEG C completely cut off air and Water, react 4.9 hours, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer product that Mn is 7300;
Obtained flame retardant type plasticizer product 100g and 18g emulsifying agents potassium rosinate, 450g desalted waters are added into emulsifier, It is 60 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:40, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 30 DEG C, adds 15 mass parts flocculating agent Al2(SO4)3Cohesion, scrubbed, centrifugal dehydration, do It is dry, easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 41 by 75, and oxygen index (OI) brings up to 28.6% by 19.7%.
Comparative example 4:
Compared with Example 4, other conditions are identical, and difference is to use fire retardant 1,1- Bromofumes, without double Key, it is specially:Nitrile rubber NBR2907 is dissolved in the solution of preparation 4.5% in butanone solvent, in terms of 100 mass parts rubber, Add 0.59 part of olefin metathesis catalystWith 13 parts of rubber flame-retarded dose of 1,1- Bromofumes, completely cut off at 15 DEG C Air and water, react 4.9 hours, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer product that Mn is 38000;
Obtained flame retardant type plasticizer product 100g and 18g emulsifying agents potassium rosinate, 450g desalted waters are added into emulsifier, It is 60 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:40, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 30 DEG C, adds 15 mass parts flocculating agent Al2(SO4)3Cohesion, scrubbed, centrifugal dehydration, do It is dry, easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 69 by 75, and oxygen index (OI) brings up to 20.4% by 19.7%, has when condensing, drying The white cigarette that 1,1- Bromofumes decompose.
Embodiment 5:
Nitrile rubber NBR3305 is dissolved in the solution of preparation 3.75% in chloroform solvent, in terms of 100 mass parts rubber, Add 0.85 part of olefin metathesis catalystWith 12 parts of rubber flame-retarded dose of trans- 1,2- dibromoethylenes, 35 DEG C of isolation air and water, react 4 hours, and reacted glue is deviate from through solvent, obtain the flame retardant type plasticizer that Mn is 1700 Product;
By obtained flame retardant type plasticizer product 100g and 0.5g emulsifying agent aliphatic acid potassium, 400g desalted waters add emulsification Device, it is 15 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:7.8, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 12 DEG C, adds 1.5 mass parts flocculating agent Al2(SO4)3Cohesion, scrubbed, centrifugal dehydration, Dry, easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 38 by 55, and oxygen index (OI) brings up to 29.3% by 19.7%.
Comparative example 5:
Compared with Example 5, other conditions are identical, and difference adds in using fire retardant in liquid phase compounding procedure Enter, be specially:Nitrile rubber NBR3305 is dissolved in the solution of preparation 3.75% in chloroform solvent, with 100 mass parts rubber Meter, add 0.85 part of olefin metathesis catalystCompletely cut off air and water at 35 DEG C, react 4 hours, Reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer product that Mn is 10300;
By obtained flame retardant type plasticizer product 100g and equivalent to 12 parts of rubber flame-retarded dose of trans- 1,2- dibromos second of plasticizer Alkene and 0.5g emulsifying agent aliphatic acid potassium, 400g desalted waters add emulsifier, and it is 15 DEG C to control temperature, stirring, and plasticizer breast is made Liquid;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:7.8, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 12 DEG C, adds 1.5 mass parts flocculating agent Al2(SO4)3Cohesion, scrubbed, centrifugal dehydration, Dry, easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 49 by 55, and oxygen index (OI) brings up to 20.9% by 19.7%, has when condensing, drying The white cigarette that dibromoethylene is decomposed.
Embodiment 6:
Nitrile rubber NBR3305 is dissolved in the solution that 19%w is prepared in chlorobenzene solvent, in terms of 100 mass parts rubber, added Enter 0.95 part of olefin metathesis catalystIt is empty in 28 DEG C of isolations with 38 parts of rubber flame-retarded dose of vinyl chloride Gas and water, react 3.23 hours, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer product that Mn is 900;
By obtained flame retardant type plasticizer product 100g and 0.2g emulsifying agent aliphatic acid potassium, 443g desalted waters add emulsification Device, it is 78 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:1.3, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 35 DEG C, adds 5.5 mass parts flocculating agent Al2(SO4)3Cohesion, scrubbed, centrifugal dehydration, Dry, easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 49.5 by 55, and oxygen index (OI) brings up to 24.7% by 19.7%.
Comparative example 6:
Compared with Example 6, other conditions are identical, and difference is to make using di-2-ethylhexyl phthalate For plasticizer, while fire retardant is added, be specially:By the di-2-ethylhexyl phthalate plasticizer 100g and 0.2g breasts Agent aliphatic acid potassium, 443g desalted waters and be 38 parts of rubber flame-retarded dose of vinyl chloride relative to plasticizer quality, add emulsifier, control Temperature processed is 78 DEG C, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, is 100 according to butt proportioning:1.3, which carry out mixing, is made into mixing Latex, reaction temperature are 35 DEG C, add the cohesion of 5.5 mass parts flocculating agents, scrubbed, centrifugal dehydration, drying, easy processing are made Flame retardant type nitrile rubber.
After tested, Mooney viscosity is reduced to 53 by 55, and oxygen index (OI) does not have significant change, and has vinyl chloride when cohesion, drying The white cigarette of decomposition.
Embodiment 7:
Nitrile rubber NBR3305 is dissolved in the solution that 18%w is prepared in chlorobenzene solvent, in terms of 100 mass parts rubber, added Enter 0.95 part of olefin metathesis catalystWith 43 parts of rubber flame-retarded dose of bromine ethene, 48 DEG C completely cut off air and Water, react 3.5 hours, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer product that Mn is 550;
By obtained flame retardant type plasticizer product 100g and 0.29g emulsifying agent aliphatic acid potassium, 98g desalted waters add emulsification Device, it is 63 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:33, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 55 DEG C, adds 21 mass parts flocculating agent Ca (HSO4)2Cohesion, scrubbed, centrifugal dehydration, do It is dry, easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 39 by 55, and oxygen index (OI) brings up to 28.7% by 19.7%.
Comparative example 7:
Compared with Example 7, other conditions are identical, and difference is urged first adding double decomposition in plasticizer preparation process Agent has been reacted and then added fire retardant and reacted a period of time again, is specially:Nitrile rubber NBR3305 is dissolved in chlorobenzene 18%w solution is prepared in solvent, in terms of 100 mass parts rubber, adds 0.95 part of olefin metathesis catalyst48 DEG C isolation air and water reaction 2h, add 43 parts of rubber flame-retarded dose of bromine ethene, 48 DEG C completely cut off air and Water, react 1.5 hours, reacted glue is deviate from through solvent, obtains the flame retardant type plasticizer product that Mn is 9500;
By obtained flame retardant type plasticizer product 100g and 0.29g emulsifying agent aliphatic acid potassium, 98g desalted waters add emulsification Device, it is 63 DEG C to control temperature, stirring, plasticising agent emulsion is made;
Latex and plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:33, which carry out mixing, is made into Latex is mixed, in the case where reaction temperature is 55 DEG C, adds 21 mass parts flocculating agent Ca (HSO4)2Cohesion, scrubbed, centrifugal dehydration, do It is dry, easy processing flame retardant type nitrile rubber is made.
After tested, Mooney viscosity is reduced to 50 by 55, and oxygen index (OI) brings up to 21.3% by 19.7%.

Claims (17)

1. a kind of preparation method of the nitrile rubber of easy processing flame retardant type, is concretely comprised the following steps:
1) flame retardant type plasticizer is prepared, nitrile rubber is dissolved in the solution that 0.1%w-20%w is prepared in solvent, with 100 mass Part rubber meter, add 0.5-1.5 parts olefin metathesis catalyst and rubber flame-retarded dose of 10-60 parts, completely cut off at 15-50 DEG C air and Water, 0.5-5 hours are reacted, reacted glue is deviate from through solvent, obtains flame retardant type plasticizer product;
2) obtained flame retardant type plasticizer product is added and mixed with emulsifying agent, water, plasticising agent emulsion is made in stirring;
3) latex and flame retardant type plasticising agent emulsion are added into condensing field, stirring, is 100 according to butt proportioning:1~50, preferably For 100:10~40, carry out mixing and be made into mixing latex, in the case where reaction temperature is 10 DEG C~80 DEG C, adds 1~25 mass parts and coagulate Poly- agent cohesion, scrubbed, centrifugal dehydration, drying, is made easy processing flame retardant type nitrile rubber.
2. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that the Mn of prepared flame retardant type plasticizer For 200-8000.
3. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that described solvent is to be free of alkene in structure The solvent that can dissolve nitrile rubber.
4. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that described solvent be selected from chloroform, chlorobenzene, Acetone or butanone.
5. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that prepared by described flame retardant type plasticizer Cheng Zhong, in terms of 100 mass parts nitrile rubbers, add 0.8-1.2 part olefin metathesis catalysts.
6. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that prepared by described flame retardant type plasticizer Cheng Zhong, in terms of 100 mass parts nitrile rubbers, add rubber flame-retarded dose of 15-35 parts.
7. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that described rubber flame-retarded dose be containing alkene not The organohalogen compounds monomer of saturation substituent.
8. the preparation method of the nitrile rubber as described in claim 1 or 7, it is characterised in that rubber flame-retarded dose described of structure Formula is:RX;Wherein:R- contains the unsaturated olefin aliphatic segment of 2~18 carbon;X is F, Cl, Br or I.
9. the preparation method of nitrile rubber as claimed in claim 8, it is characterised in that rubber flame-retarded dose described of structural formula In R be selected from vinyl, acrylic, isopropenyl, isopentene group, 3- pentenyls, 6- octenyls, trimethyl-ethylene base, 1- heptan Alkenyl, methacryloxypropyl or methacryloxy.
10. the preparation method of nitrile rubber as claimed in claim 8, it is characterised in that rubber flame-retarded dose described of structural formula In R be vinyl.
11. the preparation method of nitrile rubber as claimed in claim 8, it is characterised in that rubber flame-retarded dose described of structural formula In X be Br.
12. the preparation method of nitrile rubber as claimed in claim 8, it is characterised in that rubber flame-retarded dose described of structural formula In R contain cyano group.
13. the preparation method of the nitrile rubber as described in claim 1 or 7, it is characterised in that described rubber flame-retarded dose is selected from Vinyl chloride, propylene dichloride nitrile, bromination acrylonitrile, bromine ethene, dichloroethylene or dibromoethylene.
14. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that described olefin metathesis catalyst is Metal carbene catalyst with olefin metathesis function.
15. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that described olefin metathesis catalyst choosing Ruthenium (II) is closed from dichloro (o- isopropoxy benzylidene) (tricyclohexyl phosphine)Dichloro [o- isopropyl Epoxide benzylidene] [1,3- double (2,4,6- trimethylphenyl) -2- imidazolines subunits] conjunction ruthenium
16. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that described emulsifying agent for saturation or not The fatty acid soaps or RA rosin acid of saturation;Its dosage is that 0.1~20 part is added in 100 parts of flame retardant type plasticizer products.
17. the preparation method of nitrile rubber as claimed in claim 1, it is characterised in that described flocculating agent is selected from CaCl2、 MgSO4、Mg Cl2、Al2(SO4)3、FeCl3、CuCl2、Ca(HSO4)2In one kind or its mixture, its dosage be 100 parts of butyronitrile 1~25 mass parts are added in latex.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102603928A (en) * 2011-01-11 2012-07-25 赞南科技(上海)有限公司 Preparation method of hydrogenated nitrile rubber and degradation and hydrogenation method of butadiene type rubber
US20120252982A1 (en) * 2011-03-30 2012-10-04 Zannan Scitech Co., Ltd. Methods of modifying polymers with highly active and selective metathesis catalysts
CN103339181A (en) * 2011-02-03 2013-10-02 日本瑞翁株式会社 Nitrile rubber composition, crosslinking nitrile rubber composition, and crosslinked rubber product

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102603928A (en) * 2011-01-11 2012-07-25 赞南科技(上海)有限公司 Preparation method of hydrogenated nitrile rubber and degradation and hydrogenation method of butadiene type rubber
CN103339181A (en) * 2011-02-03 2013-10-02 日本瑞翁株式会社 Nitrile rubber composition, crosslinking nitrile rubber composition, and crosslinked rubber product
US20120252982A1 (en) * 2011-03-30 2012-10-04 Zannan Scitech Co., Ltd. Methods of modifying polymers with highly active and selective metathesis catalysts

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
粷谷信三: "用复分解催化剂促进橡胶化学反应", 《橡胶参考资料》 *
陈光等: "《新材料概论》", 30 April 2013, 国防工业出版社 *

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