CN110240807A - A kind of prefoam organosilicon foamed material and its preparation method and application - Google Patents
A kind of prefoam organosilicon foamed material and its preparation method and application Download PDFInfo
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- CN110240807A CN110240807A CN201910541774.8A CN201910541774A CN110240807A CN 110240807 A CN110240807 A CN 110240807A CN 201910541774 A CN201910541774 A CN 201910541774A CN 110240807 A CN110240807 A CN 110240807A
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
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- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
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- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/14—Saturated hydrocarbons, e.g. butane; Unspecified hydrocarbons
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- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
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- C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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Abstract
The present invention provides a kind of prefoam organosilicon foamed materials and its preparation method and application.The raw material of prefoam organosilicon foamed material of the present invention includes: the organopolysiloxane of methyl and/or ethenyl blocking, hydrogen containing siloxane, hydroxy silicon oil, prefoam agent, alcohols material, surfactant, filler, catalyst and vulcanization inhibitor.In the present invention, on the basis of hydroxy silicon oil dehydrogenation foaming, auxiliary foaming is carried out using prefoam agent and alcohols material, it can foam before dehydrogenation reaction, tiny nuclei of bubbles is formed, gas forming amount and expansion ratio can be effectively improved, and reduces hydroxy silicon oil dosage, thixotropy is reduced, processing performance is improved.Meanwhile by auxiliary agents such as addition surfactants, it can be improved the compatibility between component, improve the stability in foaming process, so that prepared foamed material abscess is more fine and closely woven uniform, density is lower.
Description
Technical field
The present invention relates to organosilicon foam material field, in particular to a kind of prefoam organosilicon foamed material and
Preparation method and application.
Background technique
Organosilicon foamed material is a kind of porous silica material with excellent weather resistance, mainly pass through physical blowing or
The method of person's chemical blowing is prepared.Physical blowing generally by being added Inorganic pore forming agents, inflatable during the preparation process
The modes such as microballoon are realized, however the former needs to remove pore former after sulfidization molding, and process flow is complicated, inefficiency；The latter
Then poor fire, high temperature resistance are poor.Azodicarbonamide, sodium bicarbonate, azo is generally added in chemical blowing in the polymer
The chemical foaming agent for generating gas is easily decomposed under the high temperature such as bis-isobutyronitrile, but the pyrolytic of chemical foaming agent can generate poison gas
Body has apparent smell residual, and in addition colloid system, these toxic gases will lead to Pt catalyst poisoning.
In order to solve the problems of traditional chemical foaming method, in the prior art using a kind of chemistry hair of optimization
Bubble method is mainly reacted using the silicone hydroxyl in hydroxy silicon oil with the si-h bond in containing hydrogen silicone oil, to carry out condensation dehydrogenation hair
Bubble.However, hydroxy silicon oil and the hydroxyl of filler surface will form hydrogen bond, serious thixotropy is generated, processing performance is influenced；And this
Method gas forming amount is small, and expansion ratio is lower；Relatively have much difficulty in healing with rate of cure weighing apparatus, process of foaming is more difficult to control.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of prefoam organosilicon foamed material, the prefoam organosilicon hair
Foam material is fine and closely woven uniformly with abscess, the advantages such as density is low.
The second object of the present invention is to provide the preparation method of prefoam organosilicon foamed material described in one kind.
The third object of the present invention is to provide a kind of application of prefoam organosilicon foamed material.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of prefoam organosilicon foamed material, the raw material of the prefoam organosilicon foamed material include: methyl and/or
The organopolysiloxane of ethenyl blocking, hydrogen containing siloxane, hydroxy silicon oil, prefoam agent, alcohols material, surfactant,
Filler, catalyst and vulcanization inhibitor.
Meanwhile the present invention also provides the preparation methods of the prefoam organosilicon foamed material, comprising: by each raw material
It heats after mixing, after continueing to mix, squeezes out, solidification obtains prefoam organosilicon foamed material.
Further, the present invention also provides the prefoam organosilicon foamed materials in fire proofing, barrier material
Or the application in anticorrosion material；
And/or the fire proofing comprising prefoam organosilicon foamed material of the present invention, barrier material or anticorrosion
Material.
Compared with prior art, the invention has the benefit that
In the present invention, on the basis of hydroxy silicon oil dehydrogenation foaming, auxiliary hair is carried out using prefoam agent and alcohols material
Bubble, can foam before dehydrogenation reaction, form tiny nuclei of bubbles, can effectively improve gas forming amount and expansion ratio, and
Hydroxy silicon oil dosage is reduced, thixotropy is reduced, improves processing performance.
Meanwhile by auxiliary agents such as addition surfactants, it can be improved the compatibility between component, improve in foaming process
Stability, so that prepared foamed material abscess is more fine and closely woven uniform, density is lower.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
On the one hand, de- in hydroxy silicon oil in the present invention the present invention provides a kind of organosilicon foamed material of prefoam
On the basis of hydrogen foaming, by cooperating the common foaming effect of prefoam agent and alcohols material, it can be realized and stablize, efficiently send out
Bubble.
In certain embodiments of the present invention, provided prefoam organosilicon foamed material mainly by: methyl and/or
The organopolysiloxane (A) of ethenyl blocking, hydrogen containing siloxane (B), hydroxy silicon oil (C), prefoam agent (D), alcohols material
(E), surfactant (F), filler (G), catalyst (H) and vulcanization inhibitor (I) are that raw material reacts to obtain.
In currently preferred some embodiments, the organopolysiloxane of raw material (A) methyl and/or ethenyl blocking
Including one or more of compound as shown in following formula (i):
Wherein, R in formula (i)1For methyl or vinyl, and different R1Optional is identical or different；
R2For C1-C6Alkyl (C1-C6Alkyl includes: C1-C6Alkyl, for example, methyl, ethyl, propyl etc.；C2-C6Alkenyl, example
Such as, vinyl, acrylic etc.；C5-C6Aromatic radical, such as cyclopentadienyl group, phenyl etc.) or C1-C5 halogenated alkyl (for example,
Trifluoromethyl, trifluoroethyl, trifluoro propyl etc.), and different R2Optional is identical or different；
R3For C1-C6Alkyl (C1-C6Alkyl includes: C1-C6Alkyl, for example, methyl, ethyl, propyl etc.；C2-C6Alkenyl, example
Such as, vinyl, acrylic etc.；C5-C6Aromatic radical, such as cyclopentadienyl group, phenyl etc.) or C1-C5 halogenated alkyl (for example,
Trifluoromethyl, trifluoroethyl, trifluoro propyl etc.), and different R3Optional is identical or different；
The integer that m is 50-2000, for example, m can be, but is not limited to 100, and 150,200,300,500,800,1200,
1500,1800 etc.；
Preferably, the viscosity of the organopolysiloxane of methyl and/or ethenyl blocking is 50-100000mPas, example
Such as, the viscosity of the organopolysiloxane of methyl and/or ethenyl blocking can be, but be not limited to 100,500,1000,3000,
10000,30000,50000,80000mPs etc.；
It is furthermore preferred that the viscosity of the organopolysiloxane of methyl and/or ethenyl blocking is 500-50000mPas.
In currently preferred some embodiments, raw material (B) hydrogen containing siloxane includes such as following formula (ii) shownization
Close one or more of object:
Wherein, in formula (ii), R4For hydrogen or C1-C6Alkyl (C1-C6Alkyl includes: C1-C6Alkyl, for example, methyl, second
Base, propyl etc.；C2-C6Alkenyl, for example, vinyl, acrylic etc.；C5-C6Aromatic radical, such as cyclopentadienyl group, phenyl etc.), and
Different R4Optional is identical or different；
R5For C1-C6Alkyl includes: C1-C6Alkyl, for example, methyl, ethyl, propyl etc.；C2-C6Alkenyl, for example, ethylene
Base, acrylic etc.；C5-C6Aromatic radical, such as cyclopentadienyl group, phenyl etc.) or itrile group, and different R5Optional is identical
Or it is different；
R6For C1-C6Alkyl includes: C1-C6Alkyl, for example, methyl, ethyl, propyl etc.；C2-C6Alkenyl, for example, ethylene
Base, acrylic etc.；C5-C6Aromatic radical, such as cyclopentadienyl group, phenyl etc.) or itrile group；
The integer that n is 1-200, for example, n can be, but is not limited to 5,10,30,50,80,100,120,150 or 180
Deng；
Preferably, the viscosity of hydrogen containing siloxane is 10-1000mPas (25 DEG C), for example, hydrogen containing siloxane
Viscosity can be, but be not limited to 30,50,70,100,300,500,700mPas etc.；
It is furthermore preferred that the viscosity of hydrogen containing siloxane is 10-200mPas；
Preferably, the hydrogen content (m/m) of hydrogen containing siloxane is 0.01-2%, such as the hydrogen content of hydrogen containing siloxane
It can be, but be not limited to 0.05,0.1,0.3,0.5,0.8,1.2,1.5,1.8% etc.；
It is furthermore preferred that the hydrogen content of hydrogen containing siloxane is 0.1-1.67%.
In currently preferred some embodiments, raw material (C) hydroxy silicon oil includes the compound as shown in following formula (iii)
One or more of；
Wherein, R7For C1-C6Alkyl (C1-C6Alkyl includes: C1-C6Alkyl, for example, methyl, ethyl, propyl etc.；C2-C6Alkene
Base, for example, vinyl, acrylic etc.；C5-C6Aromatic radical, such as cyclopentadienyl group, phenyl etc.) or itrile group, and different R7
Optional is identical or different；
R8For C1-C6Alkyl (C1-C6Alkyl includes: C1-C6Alkyl, for example, methyl, ethyl, propyl etc.；C2-C6Alkenyl, example
Such as, vinyl, acrylic etc.；C5-C6Aromatic radical, such as cyclopentadienyl group, phenyl etc.) or itrile group；
R9For alkyl or hydroxyl；
The integer that o is 1-2000, for example, o can be, but is not limited to 5, and 10,50,100,500,1000,1200,1500,
Or 1800 etc.；
Preferably, the viscosity of hydroxy silicon oil is 10-100000mPas (25 DEG C), for example, the viscosity of hydroxy silicon oil can
Think, but is not limited to 50,80,100,300,500,1000,3000,5000,10000,30000,50000,80000 etc.；
It is furthermore preferred that the viscosity of hydroxy silicon oil is 100-50000mPas；
Preferably, the hydroxy radical content (mol/mol) of hydroxy silicon oil is 0.1%-30%, for example, the hydroxyl of hydroxy silicon oil
Content can be, but be not limited to 0.5,1,3,5,8,10,12,15,20,22,25,28% etc.；
It is furthermore preferred that the hydroxy radical content of the hydroxy silicon oil is 0.5%-15%.
In currently preferred some embodiments, raw material (D) prefoam agent is not by platinum catalysis, and in foaming process
In not will receive platinum catalyst influence, and the faster foaming agent of foaming process includes, but are not limited to: C5-C8Alkane (for example, but
It is not limited to pentane, n-hexane, normal heptane, one or more of normal octane etc.), C1-C6Halogenated alkane (such as, but not limited to,
Methylene chloride, chloroform, one or more of chloroform etc.), water, peroxide (such as, but not limited to, hydrogen peroxide, peroxide
Change hydrogen tert-butyl alcohol, one or more of benzoyl peroxide etc.), microballoon foaming agent, sodium bicarbonate or organic azo foam
One or more of agent (such as, but not limited to, azodicarbonamide, sodium bicarbonate, azodiisobutyronitrile).
In currently preferred some embodiments, raw material (E) alcohols material plays complementary foaming effect,
Including one or more of compound as shown in following formula (iv)；
Wherein, in formula (iv), R10, R11And R12It is independently hydrogen, alkyl, hydroxyl substituted hydrocarbon radical or ether take
For alkyl；
Preferably, alkyl includes: C in compound shown in formula (iv)1-C6Alkyl (such as, but not limited to, methyl, ethyl,
Propyl, isopropyl, butyl, amyl, octyl etc.), C5-C20Aryl (such as, but not limited to, phenyl etc.), C6-C20Alkylaryl (example
Such as, but be not limited to aminomethyl phenyl, ethylphenyl etc.) or C6-C20Aryl alkyl (such as, but not limited to, phenyl methyl, phenyl
One of ethyl etc.)；
Preferably, hydroxyl substituted hydrocarbon radical includes: hydroxyl substituted alkyl group (for example, but unlimited in compound shown in formula (iv)
One of in methylol, ethoxy, hydroxypropyl etc.) or hydroxyl substituted aryl (such as, but not limited to, hydroxy phenyl etc.)；
Preferably, in compound shown in formula (iv), ether substituted hydrocarbon radical include: alkyl ether replace alkyl (for example, but
It is not limited to, CH3OCH2, CH3O- etc.).
In some embodiments that the present invention most has choosing, in compound shown in formula (iv), the alcohols material includes: third
Triol, isopropanol, one or more of polyetherdiol or propandiol butyl ether.
In certain embodiments of the present invention, raw material (F) surfactant includes: laureth, sorbitan fatty
Acid esters, at least one of fluorocarbon surfactant or polyether modified siloxane.The use of surfactant can be mentioned effectively
Compatibility between high component, and the stability of bubble in foaming process is improved, so that obtained foamed material abscess is more thin
Close uniform, density is lower.
In certain embodiments of the present invention, raw material (G) filler includes: fire-retardant filler, optional synergistic flame retardant, and
Optional filler auxiliary agent；
Preferably, the fire-retardant filler include: hydroxide flame retardant (such as, but not limited to, aluminium hydroxide, hydroxide
One or more of magnesium etc.), hydrate fire retardant (such as, but not limited to, zinc borate etc.) or halogen containing flame-retardant (for example,
But it is not limited to: decabromodiphenyl oxide, tetrabromobisphenol, chlorinated paraffin, hexacholorocyclopentadiene, bis- (hexacholorocyclopentadiene) cyclooctane etc.)
At least one of；
Preferably, institute's synergistic flame retardant includes: zinc borate, antimony oxide etc.；
Preferably, filler auxiliary agent includes: reinforced filling (gas-phase silica, precipitated silica, diatomite, silica flour etc.
It is one or more of), heat filling (one or more such as graphite, carbon black, metal powder) or conductive filler (graphite, carbon black, gold
One or more of belong to the one or more such as powder).
In certain embodiments of the present invention, raw material (H) catalyst includes: platinum group catalyst, such as inorganic platinum (example
Such as, but be not limited to chloric acid platinum, platinum carbon etc.) or platinum complex (such as, but not limited to, platinum-vinyl silanes complex, platinum-alkynes
Base complex etc.)；Organotin catalysts, (such as, but not limited to, dibutyl tin dilaurate).
In certain embodiments of the present invention, raw material (I) vulcanization inhibitor includes: alkynyl alcohol (such as methylparafynol, second
Alkynyl cyclohexanol etc.), methyl ethyl ketone peroxide, hexamethylene diisocyanate, in toluene diisocyanate or vinylsiloxane
At least one；
Preferably, raw material (I) vulcanization inhibitor includes: alkynyl alcohol (such as methylparafynol, ethynylcyclohexanol), mistake
Methyl Ethyl Ketone Oxidation, at least one of vinylsiloxane.
Vulcanization inhibitor can play the role of delayed response, increase the operating time, while cooperate catalyst co- controlling
Addition-crosslinked anti-and condensation foamable reaction rate, so that the bubble that dehydrogenative condensation generates both will not be too low due to system viscosity
And it is excessive or be fused into big abscess, will not or even premature cure excessively high due to viscosity and can not foam.
In currently preferred some embodiments, in parts by weight, the prefoam organosilicon foamed material
Raw material include:
0-80 parts of organopolysiloxane of methyl and/or ethenyl blocking, such as can be, but be not limited to 5,10,15,
20,30,40,50,60,70 parts etc.；1-30 parts of hydrogen containing siloxane, such as can be, but be not limited to 35,10,15,20,25 parts
Deng；0-50 parts of hydroxy silicon oil, such as can be, but be not limited to 5 10,15,20,30,40 parts etc.；0-10 parts of prefoam agent, such as
It can be, but be not limited to 2,3,5,7 parts etc.；1-30 parts of alcohols material, such as can be, but be not limited to 3,5,10,15,20,25
Part etc.；0.001-10 parts of surfactant, such as can be, but be not limited to 0.01 0.03,0.05,0.1,0.5,1,3,5,7 part
Deng；0-100 parts of filler, such as can be, but be not limited to 35,10,30,50,70,90 parts etc.；Vulcanization inhibitor 0.01-0.5
Part, such as can be, but be not limited to 0.05 0.1,0.3 part etc.；Catalyst 1-1000ppm (the total amount based on all raw materials as above
Meter), such as can be, but be not limited to 5 10,50,100,300,500,700ppm etc..
In preferred some embodiments of the invention, in parts by weight, the prefoam organosilicon foaming material
The raw material of material includes:
0-50 parts of organopolysiloxane of methyl and/or ethenyl blocking, 1-10 parts of hydrogen containing siloxane, hydroxy silicon oil 0-
30 parts, 0-5 parts of prefoam agent, 1-20 parts of alcohols material, 0.001-5 parts of surfactant, 0-70 parts of filler, vulcanization inhibitor
0.01-0.05 parts and catalyst 1-100ppm.
On the other hand, it the present invention also provides the preparation method of the prefoam organosilicon foamed material, specifically includes that
It is heated after each raw material is mixed, continuess to mix simultaneously prefoam, then squeeze out, solidified, obtain prefoam organosilicon foamed material；
Preferably, it is described be heated to be heated to 20-120 DEG C (such as, but not limited to, 30,40,50,60,70,80,90,
100,110 DEG C etc.)；
Preferably, described continues to mix carries out in high speed disperser, and the mixture after heating is subjected to high speed and is cut
Cut mixing；
Preferably, continues to mix include: revolving speed be 500-50000r/min (such as, but not limited to, 1000,3000,
5000,10000,30000r/min etc.) shear-mixed is carried out under conditions of；
It is furthermore preferred that continueing to mix includes: to carry out shear-mixed under conditions of revolving speed is 1000-10000r/min；
Preferably, the time continuesd to mix is 0.1-30min, such as, but not limited to, 0.5,1,3,5,10,15,20,
25min etc.；
It is furthermore preferred that the time continuesd to mix is 0.5-5min；
Preferably, further including the step of coating, then solidified again after squeezing out in preparation method of the present invention；
Preferably, solidification includes being heating and curing, it is furthermore preferred that cured temperature is 100-150 DEG C (for example, but unlimited
In 110,120,130,140 DEG C etc.).
In preparation method as above, mixed raw material be heated again after continues to mix during, prefoam agent and alcohols object
The process that matter is just foamed is dispersed by the high speed shear continuesd to mix, so that the abscess that prefoam agent generates is further
It is broken up, forms equally distributed tiny bubble, play the role of providing nuclei of bubbles.It, can by controlling the revolving speed of high speed shear
With performance parameters such as the density, the cell sizes that effectively control foamed material, play the controllability for improving foaming, expansion ratio,
The effect of the fine and closely woven degree of uniform foam cell.
In still another aspect of the invention, prefoam organosilicon foamed material of the present invention is additionally provided in fire proofing, damping
Material, acoustic material fill weight-reducing material, the application in barrier material or anticorrosion material, and include pre- hair of the invention
The fire proofing of organosilicon foamed material, vibration-absorptive material are steeped, acoustic material fills weight-reducing material, barrier material or anticorrosion
Material.
Embodiment 1
Weigh respectively: (methyl vinyl siloxane unit molar content is for 100 parts of ethenyl blocking organopolysiloxanes
0.4%, viscosity is 10000mPas (25 DEG C)), 12 parts of hydrophobic silicic aerogels reinforcement, (viscosity is for 15 parts of hydrogen containing siloxanes
20mPas (25 DEG C), hydrogen content 0.8%), (viscosity is 10000mPas (25 DEG C) to 25 parts of hydroxy silicon oils, and hydroxyl chain link rubs
Your content is 0.4%) 2 parts of microballoon foaming agents, 5 parts of petroleum ethers, 5 parts of polyetherdiol, 0.1 portion of fluorocarbon surfactant, 30 parts of hydrogen
Aluminium oxide, 10 parts of zinc borates, 0.5 part of ethynylcyclohexanol, Karst catalyst 5ppm.
After mixing the above components evenly, 60 DEG C are preheated to, and carries out prefoam, 4000r/min in high speed disperser
Revolving speed high speed shear mixes 1min.It squeezes out, coating solidifies in flakes at 120 DEG C, and obtaining tensile strength is 300KPa, density
The foamed silastic material of 0.25, fire-retardant UL94-V0.
Embodiment 2
Weigh respectively: (methyl vinyl siloxane unit molar content is for 50 parts of ethenyl blocking organopolysiloxanes
0.4%, viscosity is 10000mPas (25 DEG C)), 12 parts of hydrophobic silicic aerogels reinforcement, (viscosity is for 30 parts of hydrogen containing siloxanes
20mPas (25 DEG C), hydrogen content 1.0%), (viscosity is 50mPas (25 DEG C), hydroxyl chain link mole to 30 parts of hydroxy silicon oils
Content is 10%) 2 parts of propandiol butyl ethers, 1 part of benzoyl peroxide, 1 part of isopropanol mixture, 0.1 part of Span table
Face activating agent, 40 parts of magnesium hydroxides, zinc borate mixture, 0.5 part of methylparafynol, hexamethylene diisocyanate, toluene are different
Cyanate, vinylsiloxane mixture, chloric acid platinum 30ppm.
After mixing the above components evenly, 60 DEG C are preheated to, and carries out prefoam, 10000r/min in high speed disperser
Revolving speed high speed shear mixes 1min.It squeezes out, coating solidifies in flakes at 120 DEG C, obtains 300Kpa, density 0.29 is fire-retardant
The foamed silastic material of UL94-V0.
Comparative example 1
Weigh respectively: (methyl vinyl siloxane unit molar content is for 100 parts of ethenyl blocking organopolysiloxanes
0.5%, viscosity is 5000mPas (25 DEG C)), 12 parts of hydrophobic silicic aerogels reinforcement, (viscosity is for 10 parts of hydrogen containing siloxanes
10mPas (25 DEG C), hydrogen content 1.6%), (viscosity is 50mPas (25 DEG C), hydroxyl chain link mole to 15 parts of hydroxy silicon oils
Content is 10%) 5 parts of glycerine, 1 part of fluorine laureth, 0.1 portion of fluorocarbon surfactant, 30 parts of aluminium hydroxides, 10 parts of boron
Sour zinc, 1 part of toluene diisocyanate, methylparafynol mixture, Karst catalyst 10ppm.
After mixing the above components evenly, squeezing out, coating solidifies in flakes at 120 DEG C, obtains tensile strength 360Kpa,
Density 0.37, fire-retardant UL94-V0 foamed silastic material.
Comparative example 2
Weigh respectively: (methyl vinyl siloxane unit molar content is for 60 parts of ethenyl blocking organopolysiloxanes
0.5%, viscosity is 5000mPas (25 DEG C)), (viscosity is 100mPas (25 DEG C) to 5 parts of hydrogen containing siloxanes, and hydrogen content is
0.5%), 15 parts of hydroxy silicon oils (viscosity is 50mPas (25 DEG C), and hydroxyl chain link molar content is 10%) 5 parts of pentanes,
0.5 part of polyether modified siloxane surfactant, 40 parts of magnesium hydroxides, zinc borate, gas-phase silica mixture, 0.5 part of toluene
Isocyanates, vinylsiloxane mixture, Karst catalyst 5ppm.
After mixing the above components evenly, 50 DEG C are preheated to, and carries out prefoam, 4000r/min in high speed disperser
Revolving speed high speed shear mixes 1min.It squeezes out, coating solidifies in flakes at 100 DEG C, obtains 200Kpa, density 0.32 is fire-retardant
UL94-V0 foamed silastic material.
Comparative example 3
Weigh respectively: (methyl vinyl siloxane unit molar content is for 100 parts of ethenyl blocking organopolysiloxanes
0.4%, viscosity is 10000mPas (25 DEG C)), 12 parts of hydrophobic silicic aerogels reinforcement, (viscosity is for 15 parts of hydrogen containing siloxanes
20mPas (25 DEG C), hydrogen content 0.8%), (viscosity is 10000mPas (25 DEG C) to 25 parts of hydroxy silicon oils, and hydroxyl chain link rubs
Your content is 0.4%) 2 parts of microballoon foaming agents, 5 parts of petroleum ethers, 5 parts of polyetherdiol, 30 parts of aluminium hydroxides, 10 parts of zinc borates,
0.5 part of ethynylcyclohexanol, Karst catalyst 5ppm.
After mixing the above components evenly, 60 DEG C are preheated to, and carries out prefoam, 4000r/min in high speed disperser
Revolving speed high speed shear mixes 1min.It squeezes out, coating solidifies in flakes at 120 DEG C, and obtaining tensile strength is 300Kpa, density
The foamed silastic material of 0.29, fire-retardant UL94-V0 compare with embodiment 1, and abscess becomes larger, and disorderly bubble increases.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of prefoam organosilicon foamed material, which is characterized in that the raw material of the prefoam organosilicon foamed material includes:
The organopolysiloxane of methyl and/or ethenyl blocking, hydrogen containing siloxane, hydroxy silicon oil, prefoam agent, alcohols object
Matter, surfactant, catalyst, vulcanization inhibitor and optional filler.
2. prefoam organosilicon foamed material according to claim 1, which is characterized in that the methyl and/or vinyl
The organopolysiloxane of sealing end includes one or more of compound as shown in following formula (i):
Wherein, R in formula (i)1For methyl or vinyl, and different R1Optional is identical or different；
R2For C1-C6Alkyl or C1-C5 halogenated alkyl, and different R2Optional is identical or different；
R3For C1-C6Alkyl or C1-C5 halogenated alkyl, and different R3Optional is identical or different；
M is the integer of 50-2000；
Preferably, the viscosity of the organopolysiloxane of the methyl and/or ethenyl blocking is 50-100000mPas；
It is furthermore preferred that the viscosity of the organopolysiloxane of the methyl and/or ethenyl blocking is 500-50000mPas.
3. prefoam organosilicon foamed material according to claim 1, which is characterized in that the hydrogen containing siloxane includes
One or more of compound as shown in following formula (ii):
Wherein, in formula (ii), R4For hydrogen or C1-C6Alkyl, and different R4Optional is identical or different；
R5For C1-C6Alkyl or itrile group, and different R5Optional is identical or different；
R6For C1-C6Alkyl or itrile group；
N is 1-200；
Preferably, the viscosity of the hydrogen containing siloxane is 10-1000mPas；
It is furthermore preferred that the viscosity of the hydrogen containing siloxane is 10-200mPas；
Preferably, the hydrogen content of the hydrogen containing siloxane is 0.01-2%；
It is furthermore preferred that the hydrogen content of the hydrogen containing siloxane is 0.1-1.67%.
4. prefoam organosilicon foamed material according to claim 1, which is characterized in that the hydroxy silicon oil includes as follows
One or more of compound shown in formula (iii)；
Wherein, R7For C1-C6Alkyl or itrile group, and different R7Optional is identical or different；
R8For C1-C6Alkyl or itrile group；
R9For alkyl or hydroxyl；
O is the integer of 1-2000；
Preferably, the viscosity of the hydroxy silicon oil is 10-100000mPas；
It is furthermore preferred that the viscosity of the hydroxy silicon oil is 100-50000mPas；
Preferably, the hydroxy radical content of the hydroxy silicon oil is 0.1%-30%；
It is furthermore preferred that the hydroxy radical content of the hydroxy silicon oil is 0.5%-15%.
5. prefoam organosilicon foamed material according to claim 1, which is characterized in that the prefoam agent includes: C5-
C8Alkane, C1-C6Halogenated alkane, water, peroxide, microballoon foaming agent, one of sodium bicarbonate or organic azo foaming agent
Or it is several.
6. prefoam organosilicon foamed material according to claim 1, which is characterized in that the alcohols material includes as follows
One or more of compound shown in formula (iv)；
Wherein, in formula (iv), R10, R11And R12It is independently hydrogen, alkyl, hydroxyl substituted hydrocarbon radical or ether replace hydrocarbon
Base；
Preferably, the alcohols material includes: glycerine, isopropanol, one of polyetherdiol or propandiol butyl ether or several
Kind.
7. prefoam organosilicon foamed material according to claim 1, which is characterized in that the surfactant includes:
Laureth, Span, at least one of fluorocarbon surfactant or polyether modified siloxane；
And/or the filler includes: fire-retardant filler and optional filler auxiliary agent；
Wherein, the fire-retardant filler includes: hydroxide flame retardant, and at least one in hydrate fire retardant or halogen containing flame-retardant
Kind；
The filler auxiliary agent includes: reinforced filling, one or more of heat filling or conductive filler；
And/or the catalyst includes: platinum group catalyst；
And/or the vulcanization inhibitor includes: alkynyl alcohol, methyl ethyl ketone peroxide, hexamethylene diisocyanate, toluene
At least one of isocyanates or vinylsiloxane.
8. prefoam organosilicon foamed material described in any one of -7 according to claim 1, which is characterized in that according to parts by weight
Number meter, the raw material of the prefoam organosilicon foamed material include:
1-80 parts of organopolysiloxane of methyl and/or ethenyl blocking, 1-30 parts of hydrogen containing siloxane, hydroxy silicon oil 0-50
Part, 1-10 parts of prefoam agent, 1-30 parts of alcohols material, 0.001-10 parts of surfactant, 0-100 parts of filler, catalyst 1-
100ppm and 0.01-0.5 parts of vulcanization inhibitor；
Preferably, in parts by weight, the raw material of the prefoam organosilicon foamed material includes: methyl and/or vinyl
1-50 parts of the organopolysiloxane of sealing end, 1-10 parts of hydrogen containing siloxane, 0-30 parts of hydroxy silicon oil, 1-5 parts of prefoam agent, alcohols
1-20 parts of substance, 0.001-5 parts of surfactant, 0-70 parts of filler, catalyst 1-1000ppm and vulcanization inhibitor 0.01-
0.05 part.
9. the preparation method of prefoam organosilicon foamed material of any of claims 1-8, which is characterized in that packet
It includes:
It heats after each raw material is mixed, after continueing to mix, squeezes out, solidification obtains prefoam organosilicon foamed material；
Preferably, described continues to mix includes: to carry out shear-mixed under conditions of revolving speed is 500-50000r/min；
It is furthermore preferred that described continues to mix includes: to carry out shear-mixed under conditions of revolving speed is 1000-10000r/min.
10. prefoam organosilicon foamed material of any of claims 1-8 is in fire proofing, vibration-absorptive material, sound insulation
Material fills weight-reducing material, the application in barrier material or anticorrosion material；
And/or the fire proofing of prefoam organosilicon foamed material described in any one of 1-8, damping are required comprising benefit
Material, acoustic material fill weight-reducing material, barrier material or anticorrosion material.
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| TWI730550B (en) * | 2019-12-18 | 2021-06-11 | 邱隆安 | Composition capable of fire-proof, explosion-proof and heat insulation and manufacturing method thereof |
| CN113337129A (en) * | 2021-06-10 | 2021-09-03 | 惠州市永卓科技有限公司 | Special foaming silica gel for simulation robot and preparation method thereof |
| TWI761922B (en) * | 2019-12-18 | 2022-04-21 | 邱隆安 | Composition capable of fire-proof, explosion-proof and heat insulation and manufacturing method thereof |
| CN114874630A (en) * | 2022-05-25 | 2022-08-09 | 浙江恒业成有机硅有限公司 | High-rate platinum heat-vulcanized foamed silicone rubber and preparation method thereof |
| WO2022199223A1 (en) * | 2022-01-05 | 2022-09-29 | 航天材料及工艺研究所 | Porous silicon resin and lightweight flexible flame-retardant composite material |
| CN115558417A (en) * | 2021-12-13 | 2023-01-03 | 上海纽帕新材料科技有限公司 | Flame-retardant fireproof composition and preparation method thereof |
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| WO2024118938A1 (en) * | 2022-11-28 | 2024-06-06 | Dow Silicones Corporation | Low density organopolysiloxane foam with filler |
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