CN104592717B - One inter-species acetylenylbenzene azo biphenyl type phenol formaldehyde foam and preparation method thereof - Google Patents
One inter-species acetylenylbenzene azo biphenyl type phenol formaldehyde foam and preparation method thereof Download PDFInfo
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- CN104592717B CN104592717B CN201510056133.5A CN201510056133A CN104592717B CN 104592717 B CN104592717 B CN 104592717B CN 201510056133 A CN201510056133 A CN 201510056133A CN 104592717 B CN104592717 B CN 104592717B
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- acetylenylbenzene
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- RKMNQXFECVRTNI-UHFFFAOYSA-N CC1(C=CC=CC1)O Chemical compound CC1(C=CC=CC1)O RKMNQXFECVRTNI-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses inter-species acetylenylbenzene azo biphenyl type phenol formaldehyde foam and preparation method thereof；The phenol formaldehyde foam is obtained by acetylenylbenzene azo biphenyl type phenolic resin, solvent, foaming agent and a fluorine-containing surfactant by foamed solidification；The preparation method is simple to operate, and reaction condition is gentle and is easily controlled, and meets industrialization production requirements；Acetylenylbenzene azo biphenyl type phenol formaldehyde foam uniform foam cell between obtaining, and there is superior heat resistance and anti-flammability, high Residual carbon, lower thermal conductivity and higher compression intensity, it can be widely applied to the numerous areas such as Aeronautics and Astronautics.
Description
Technical field
The present invention relates to a kind of new acetylenylbenzene azo biphenyl type phenol formaldehyde foam and preparation method thereof, belong to macromolecule
Foamed material field.
Background technology
Foamed plastics since the advent of the world, because it has the excellent properties such as density is small, specific strength is high, heat-insulated and sound insulation, and
It is widely used in the fields such as industry, agricultural, building, communications and transportation, Aero-Space.Numerous foamed plastics can only be at 0~150 DEG C
In the range of use, it is impossible to meet the performance requirement that is used in the military fields such as Aeronautics and Astronautics, and high temperature resistant foamed plastics can be
Long continuous operation under more than 200 DEG C of hot conditions, instantaneous heat-resisting up to 540 DEG C had.Due to its protrusion heat resistance,
Low thermal conductivity, high temperature resistant foamed plastics are made as one of research direction of Developing High Performance Foam Plastics.
Phenol formaldehyde foam is obtained by the foamed solidification of matrix of phenolic resin, is known as the title of " king of insulation ".In numerous bubbles
In foam plastics, phenol formaldehyde foam is penetrated with its heat-resisting, lower thermal conductivity coefficient, fire retardant self-extinguishment, low smog, flame resistant, meets fire without unrestrained
Thing, it is cheap the advantages that it is in widespread attention.In the last few years, with skyscraper, communications and transportation, naval vessel, Aero-Space etc.
Field improves constantly to the thermal stability and flammability of syntactic foam plastics so that the development of phenol formaldehyde foam is more fast
Speed.
However, traditional phenol formaldehyde foam because itself it is intrinsic the defects of, such as：Fragility, heat endurance be poor, long-term use of temperature
Catalyst is needed during low, foamed solidification, it is difficult to meets higher performance requirement.Therefore, the special type phenolic foam of novel high-performance is special
Be not high temperature resistant, resistance to ablation, lower thermal conductivity, high fire-retardance and with certain mechanical strength phenol formaldehyde foam design and preparation turn into
One of high performance important research direction of phenol formaldehyde foam.
The content of the invention
The defects of present invention exists for phenol formaldehyde foam traditional in the prior art, it is therefore an objective to be to provide a kind of foam bubble
Hole is uniform, and even with acetylenylbenzene between superior heat resistance and anti-flammability, high Residual carbon, lower thermal conductivity and stronger compressive strength
Nitrogen biphenyl type phenol formaldehyde foam, the phenol formaldehyde foam can be widely applied to the numerous areas such as Aeronautics and Astronautics.
Another object of the present invention is to be to provide that a kind of technique is simple, and reaction condition is gentle and the system that is easily controlled
The method of acetylenylbenzene azo biphenyl type phenol formaldehyde foam between described in standby.
The invention provides an inter-species acetylenylbenzene azo biphenyl type phenol formaldehyde foam, this acetylenylbenzene azo biphenyl type phenol
Aldehyde foam is obtained by following content of component by foamed solidification：Between 100 parts of acetylenylbenzene azo biphenyl type phenolic resin, solvent
10~59 parts, 1~28 part of foaming agent, 2~18 parts of surfactant, it is described between acetylenylbenzene azo biphenyl type phenolic resin have
There is the structure of formula 1：
Wherein, molecular weight is between 495~10000.
Acetylenylbenzene azo biphenyl type phenol formaldehyde foam also includes following preferred scheme between the present invention：
Acetylenylbenzene azo biphenyl type phenol formaldehyde foam is by an acetylenylbenzene azo biphenyl type phenolic resin 100 between preferable
Part, 18~52 parts of solvent, 5~24 parts of foaming agent, 4~16 parts of surfactant are obtained by foamed solidification.
Foaming agent is 4,4 '-OBSH, azodicarbonamide, N in preferable scheme, and N- dinitrosos five are sub-
At least one of tetramine.
Solvent is at least one of acetone, butanone, N,N-dimethylformamide, tetrahydrofuran in preferable scheme.
The fluorine-containing surfactant of the present invention is branched chain type perfluoroalkyl polyoxy vinethene nonionic surfactant FY-
F501 is H30.It can purchase in the producer such as Guangzhou Fu Yuangui Science and Technology Ltd.s or Zibo City Zichuan Huahai chemical plant.
Present invention also offers it is a kind of it is described between acetylenylbenzene azo biphenyl type phenol formaldehyde foam preparation method, the preparation
Method is after being well mixed an acetylenylbenzene azo biphenyl type phenolic resin, surfactant, solvent and foaming agent, to load mould
In tool, foamed solidification is molded at a temperature of 100~250 DEG C.
The preparation method of acetylenylbenzene azo biphenyl type phenol formaldehyde foam also includes following preferred scheme between the present invention：
It is 100~160 DEG C that blowing temperature is originated in preferable scheme；Most preferably 120~150 DEG C.
It is 10~60min that the blowing temperature retention time is originated in preferable scheme；Most preferably 15~50min.
Mould is opening or seals type in preferable scheme.
Acetylenylbenzene azo biphenyl type phenolic resin is prepared via a method which to obtain between the present invention：
Step 1：After 3-aminophenylacetylene is slowly dropped in 12~18wt% hydrochloric acid solution, -5~0 DEG C is cooled to,
30~40wt% sodium nitrite solution is slowly added dropwise into the hydrochloric acid solution again, after being added dropwise, reacts 1.0 at 0~2 DEG C
~2.5 hours, obtain an ethynyl phenyl diazonium salt solution；
Step 2：Under Friedel-Crafts catalysts, phenol and 4,4 '-dichloromethyl biphenyl is in 80~110 DEG C
Lower progress friedel-craft reaction, obtains biphenyl type phenolic resin；Gained biphenyl type phenolic resin and an alkynyl phenyl diazol are in alkalescence
In solution, coupling reaction is carried out at a temperature of no more than 0 DEG C, obtains an acetylenylbenzene azo biphenyl type phenolic resin.
Wherein, 3-aminophenylacetylene and the mol ratio of natrium nitrosum are 1 in step 1:0.9~1.3.3-aminophenylacetylene with
The mol ratio of hydrochloric acid is 1:2~5.The time that friedel-craft reaction is carried out in step 2 is 2~7h.The time that coupling reaction is carried out is 4
~7h.The mol ratio of phenol and 4,4 '-dichloromethyl biphenyl is 2~11:1.3-aminophenylacetylene and biphenyl type phenolic resin
Mass ratio is 0.9~1.7:1.
Beneficial effects of the present invention：The present invention is first by a kind of acetylenylbenzene azo biphenyl type phenol between having new structure
Urea formaldehyde is used for foaming formulation, this acetylenylbenzene azo biphenyl type phenolic resin at a lower temperature can self-curing, and have
Preferable heat resistance and higher Residual carbon.The fluorine-containing table of this acetylenylbenzene azo biphenyl type phenolic resin combination proper proportion
Face activating agent, solvent and foaming agent prepare density in 100~450Kg/m under proper condition3Between foam, and the foam
Abscess is more uniform, and particle diameter is between 100~900 μm, while the foam has high-fire resistance, high fire-retardance, high Residual carbon, relatively low
Thermal conductivity and the characteristics of higher compressive strength, can be widely applied to the numerous areas such as Aeronautics and Astronautics, carrier rocket.This
Acetylenylbenzene azo biphenyl type phenolic resin foam preparation method technique is simple between invention, reaction condition is easily-controllable, is adapted to big rule
The popularization and application of mould.
Brief description of the drawings
【Fig. 1】The biphenyl type bakelite B N and an acetylenylbenzene azo biphenyl type phenolic resin prepared for embodiment 1
EPABN FT-IR spectrograms.
【Fig. 2】Acetylenylbenzene azo biphenyl type phenolic resin EPABN GPC figures between being prepared for embodiment 1.
【Fig. 3】For the SEM figures of the acetylenylbenzene azo biphenyl type phenolic resin foam between obtained of embodiment 1.
【Fig. 4】For the TGA figures of the acetylenylbenzene azo biphenyl type phenolic resin foam between obtained of embodiment 1.
Embodiment
Following examples are intended to further illustrate present invention, rather than limit the scope of the invention.
It is used for the measuring method of acetylenylbenzene azo biphenyl type phenolic foams physical and chemical performance between measuring in embodiment.
Apparent density determines：It is measured according to standard ASTMD1662.
Compressive strength：Tested by GJB1585A-2004, specimen shape is cylinder, and size is Φ 25mm × 30mm.
Thermal conductivity is tested：Tested by GB 3399-82, specimen shape is cylinder, and size is Φ 28mm × 9mm.
Critical oxygen index is tested：Tested by GB/T2406.2-2009.
Embodiment 1
Step (1)：Weigh 4,4 '-dichloromethyl biphenyl 20.20g, methanol 2.24g, phenol 38.77g, concentrated hydrochloric acid
2.25g, it is put into the 250mL four-hole boiling flasks with mechanical stirring device, thermometer and reflux condensing tube, stirs and be warming up to 90
DEG C, back flow reaction 5h at this temperature.After reaction terminates, it is brought rapidly up to 180 DEG C of vacuum distillations, arrives out while hot, cool down and produce
Light yellow biphenyl type phenolic resin, biphenyl type phenolic resin structure FT-IR figures are as shown in Figure 1.
Step (2)：99.30g 15% hydrochloric acid solution is measured, is put into mechanical stirring device, condenser pipe and temperature
In the 250mL four-hole boiling flasks of meter, 18.75g 3- amino phenylacetylenes are weighed, are instilled dropwise in acid solution, milk-like slurry is formed, waits to drip
Add complete, system is cooled to -5 DEG C.Natrium nitrosum 11.39g is weighed, 21.15g distilled water is dissolved in, is configured to 35%NaNO2Water
Solution, above-mentioned milk-like slurry then being instilled dropwise, is sufficiently stirred, waited to drip and 1.5h is reacted at 0 DEG C, it is suitable that reaction finishes addition
Urea is measured, then filters and produces the transparent diazonium salt solution of brownish red.Product Cord blood, with do with.
Step (3)：135mL absolute ethyl alcohols are measured, are put into the 250mL with mechanical stirring device, condenser pipe and thermometer
In four-hole boiling flask, the biphenyl type phenolic aldehyde 15g of synthesis is added, sodium hydroxide 14.03g, mechanical agitation, treats that biphenyl type phenolic resin is molten
Solution finishes, and is cooled to 0 DEG C, instills the diazonium salt solution synthesized dropwise, and react 5h at 0 DEG C.Reaction finishes, and adds acid
Liquid, PH to 7 is adjusted, precipitates product, filtered, washing, be put at 60 DEG C of vacuum drying chamber and dry 10h, obtain brown-red powder.
The number-average molecular weight of acetylenylbenzene azo biphenyl type phenolic resin (EPABN) is 1656 between prepared.
Step (4)：Weigh acetylenylbenzene azo biphenyl type phenolic resin, 0.64g FY-F501,3mLN between 8g, N- diformazans
Base formamide and 1.44g azodicarbonamides, it is well mixed, loads opening sealed mold, in 125 DEG C/0.7h+150 DEG C/1h+
The curing molding that foamed at 170 DEG C/1h+190 DEG C/4h+210 DEG C/1h+225 DEG C/4h DEG C obtains an acetylenylbenzene azo biphenyl phenolic aldehyde
Resin foam.
Acetylenylbenzene azo biphenyl type phenolic resin foam density is 115Kg/m between gained3, in 1000 DEG C of nitrogen atmospheres
Carbon yield can reach 62%, and 5% thermal weight loss decomposition temperature is 457 DEG C, compressive strength 0.553Mpa, oxygen index (OI) 42, is led
Hot coefficient is 0.059Wm-1·K-1。
Embodiment 2
With embodiment 1 it is obtained between acetylenylbenzene azo biphenyl type phenolic resin prepare foam：
Weigh acetylenylbenzene azo biphenyl type phenolic resin between 3g, 0.24g H30,1.1mL N,N-dimethylformamides and
0.54g azodicarbonamides, it is well mixed, loads sealed mold of remaining silent, in 130 DEG C/0.5h+150 DEG C/1h+170 DEG C/1h+
The curing molding that foamed under 190 DEG C/4h+210 DEG C/1h+225 DEG C/4h obtains an acetylenylbenzene azo biphenyl type phenolic resin foam.
Acetylenylbenzene azo biphenyl type phenolic resin foam density is 190Kg/m between gained3, in 1000 DEG C of nitrogen atmospheres
Carbon yield can reach 62%, and 5% thermal weight loss decomposition temperature is 457 DEG C, compressive strength 1.537Mpa, oxygen index (OI) 45, is led
Hot coefficient is 0.065Wm-1·K-1。
Embodiment 3
Step (1)：Weigh 4,4 '-dichloromethyl biphenyl 20.20g, methanol 2.18g, phenol 15.14g, concentrated hydrochloric acid
2.52g, it is put into the 250mL four-hole boiling flasks with mechanical stirring device, thermometer and reflux condensing tube, nitrogen protection, stirring
And 100 DEG C are warming up to, back flow reaction 6h at this temperature.After reaction terminates, it is brought rapidly up to 180 DEG C of vacuum distillations, arrives while hot
Go out, cool down and produce light yellow biphenyl type phenolic resin.
Step (2)：119.16g 15% hydrochloric acid solution is measured, is put into mechanical stirring device, condenser pipe and temperature
In the 250mL four-hole boiling flasks of meter, 22.5g 3- amino phenylacetylenes are weighed, are instilled dropwise in acid solution, milk-like slurry is formed, waits to be added dropwise
Finish, system is cooled to -5 DEG C.Natrium nitrosum 13.52g is weighed, is dissolved in 31.55g distilled water, then instills above-mentioned breast dropwise
Shape slurries, are sufficiently stirred, and wait to drip and 2.0h is reacted at 0 DEG C, and reaction, which finishes, adds appropriate urea, then filter produce it is reddish brown
The transparent diazonium salt solution of color.Product Cord blood, with do with.
Step (3)：135mL absolute ethyl alcohols are measured, are put into the 250mL with mechanical stirring device, condenser pipe and thermometer
In four-hole boiling flask, the biphenyl type phenolic aldehyde 15g of synthesis is added, sodium hydroxide 16.02g, mechanical agitation, treats that biphenyl type phenolic resin is molten
Solution finishes, and is cooled to 0 DEG C, instills the diazonium salt solution synthesized dropwise, and react 6h at 0 DEG C.Reaction finishes, and adds acid
Liquid, PH to 7 is adjusted, precipitates product, filtered, washing, be put at 60 DEG C of vacuum drying chamber and dry 10h, obtain brown-red powder.
The number-average molecular weight of acetylenylbenzene azo biphenyl type phenolic resin (EPABN) is 7035 between prepared.
Step (4)：Weigh acetylenylbenzene azo biphenyl type phenolic resin, 0.40g H30,1.5mLN between 4g, N- dimethyl
Formamide and 0.64g azodicarbonamides, it is well mixed, loads sealed mold of remaining silent, in 125 DEG C/0.5h+150 DEG C/1h+170
DEG C/1h+190 DEG C/4h+210 DEG C/1h+225 DEG C/4h under foaming curing molding obtain an acetylenylbenzene azo biphenyl type phenolic aldehyde tree
Fat vacuole foam.
Acetylenylbenzene azo biphenyl type phenolic resin foam density is 280Kg/m between gained3, in 1000 DEG C of nitrogen atmospheres
Carbon yield can reach 63%, and 5% thermal weight loss decomposition temperature is 457 DEG C, compressive strength 5.152Mpa, oxygen index (OI) 49, is led
Hot coefficient is 0.073Wm-1·K-1。
Embodiment 4
With embodiment 3 it is obtained between acetylenylbenzene azo biphenyl type phenolic resin prepare foam：
Weigh acetylenylbenzene azo biphenyl type phenolic resin, 0.66g FY-F501,2mL N between 5.5g, N- dimethyl formyls
Amine and 0.77g azodicarbonamides, it is well mixed, loads mould of remaining silent, in 120 DEG C/0.6h+150 DEG C/1h+170 DEG C/1h+
The curing molding that foamed under 190 DEG C/4h+210 DEG C/1h+225 DEG C/4h obtains an acetylenylbenzene azo biphenyl type phenolic resin foam.
Acetylenylbenzene azo biphenyl type phenolic resin foam density is 353Kg/m between gained3, in 1000 DEG C of nitrogen atmospheres
Carbon yield can reach 63%, and 5% thermal weight loss decomposition temperature is 457 DEG C, compressive strength 8.099Mpa, oxygen index (OI) 51, is led
Hot coefficient is 0.084Wm-1·K-1。
Claims (7)
- A 1. inter-species acetylenylbenzene azo biphenyl type phenol formaldehyde foam, it is characterised in that solid by foaming by following content of component Change obtains：Between 100 parts of acetylenylbenzene azo biphenyl type phenolic resin,10~59 parts of solvent,1~28 part of foaming agent,2~18 parts of fluorine-containing surfactant,Acetylenylbenzene azo biphenyl type phenolic resin has the structure of formula 1 between described：Wherein, molecular weight is between 495~10000.
- 2. acetylenylbenzene azo biphenyl type phenol formaldehyde foam between as claimed in claim 1, it is characterised in that by an acetylenylbenzene idol 100 parts of nitrogen biphenyl type phenolic resin, 18~52 parts of solvent, 5~24 parts of foaming agent, 4~16 parts of surfactant are solid by foaming Change obtains.
- 3. acetylenylbenzene azo biphenyl type phenol formaldehyde foam between as claimed in claim 2, it is characterised in that the foaming agent is 4, At least one of 4 '-OBSH, azodicarbonamide, N, N '-dinitrosopentamethylene tetramine.
- 4. acetylenylbenzene azo biphenyl type phenol formaldehyde foam between as claimed in claim 2, it is characterised in that described solvent is third At least one of ketone, butanone, N, N '-dimethyl formamide, tetrahydrofuran.
- 5. the method for acetylenylbenzene azo biphenyl type phenol formaldehyde foam, its feature exist between preparing described in any one of Claims 1 to 4 In, after acetylenylbenzene azo biphenyl type phenolic resin, surfactant, solvent and foaming agent are well mixed by between, loading mould In, foamed solidification is molded at a temperature of 100~250 DEG C.
- 6. method as claimed in claim 5, it is characterised in that starting blowing temperature is 100~160 DEG C.
- 7. method as claimed in claim 6, it is characterised in that the starting blowing temperature retention time is 10~60min.
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| CN103724652B (en) * | 2014-01-08 | 2016-01-06 | 中南大学 | The preparation method of a kind of dicyano phenyl etherified phenol-xenol urea formaldehyde tiny balloon |
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